JB/T 3223-1996 Welding material quality management regulations

This standard specifies the management requirements for welding materials (welding rods, welding wires, flux, alloy powders and welding gases, etc.) during procurement, acceptance, storage and use. This standard applies to the quality management of the above welding materials in welding production. JB/T 3223-1996 Welding Material Quality Management Regulations JB/T3223-1996 Standard download decompression password: www.bzxz.net

Where Vi -
Part 1 Testing Methods for Main Building Materials - Volume of EDTA Standard Solution (2.11) consumed by titrating total calcium (4.3.2) (mL); Ti -
-1mL EDTA Standard Solution (2.11) is equivalent to the amount of calcium oxide (g); The amount of test solution (4.3.2) equivalent to the amount of sample (g). 5.2 Calculate the percentage of calcium oxide according to formula (4): CaO (%) = Total CaO (%) - CaF2 (%) × 0.718 - Calcium fluoride content calculated according to GB5292.6-85; Where CaF2 (%) -
Calcium fluoride is converted to calcium oxide by conversion factor. 5.3 Calculate the percentage of magnesium oxide according to formula (5): (V2- Vi)× T2×100
MgO(%) =
Wherein, V2—
-the volume (mL) of EDTA standard solution (2.11) consumed in titrating the calcium and magnesium content (4.3.3); V1——--the volume (mL) of EDTA standard solution (2.11) consumed in titrating the total calcium content (4.3.2); 1mL.EDTA standard solution (2.11) is equivalent to the amount of magnesium oxide (g); T2
6 allowable difference
-the amount (g) of the test solution (4.3.3) equivalent to the sample. The difference between the parallel determination results should not be greater than the allowable difference listed in Table 2: (%) Table 2
Calcium oxide or magnesium oxide content
0.50~1.00
>1.00~2.00
>2.00~4.00
Additional instructions:
Allowable difference
Calcium oxide or magnesium oxide content
>4.00~10.0
>10.0~20.0
This standard was proposed by the Ministry of Machinery Industry of the People's Republic of China and is under the jurisdiction of Harbin Welding Research Institute. This standard was drafted by Harbin Welding Research Institute. The main drafters of this standard are Lin Kegong and Bai Shuyun. 13. "Quality Management Regulations for Welding Materials" JB/T3223-961 Scope
Allowance
This standard specifies the management requirements for welding materials (welding rods, welding wires, fluxes, alloy powders and welding gases, etc.) during procurement, acceptance, inventory storage and use. This standard applies to the quality management of the above-mentioned welding materials in welding production. 2 Referenced standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown in III. Welding rods and fluxes for construction
are valid. All standards will be revised, and parties using this standard should explore the possibility of using the latest versions of the following standards.
GB 983—85
GB 984 --85
GB 3669 -- 83
GB/T 3670—1995
GB 3864—84
GB 4242—85
GB 4842—86
GB/T 5117 --- 1995
GB/T 5118 ---1995
GB 5293 —-85
GB 6052 -87
GB/T 8110—1995
GB 9460—88
GB 10044 -- 88
GB 10045 — 88 | | tt | -82
JB 3170—82
JB/T 6964—93
3 General
Stainless steel welding rods
Overlay welding rods
Aluminum and aluminum alloy welding rods
Copper and copper alloy welding rods
Industrial gaseous nitrogen
Stainless steel wire for welding
Carbon steel welding rods
Low alloy steel welding rods
Flux for submerged arc welding of carbon steel
Industrial liquid carbon dioxide
Carbon steel, low alloy steel welding wire for gas shielded arc welding Copper and copper alloy welding wire
Cast iron welding rods and welding wires
Carbon steel flux-cored welding wires
Aluminum and aluminum alloy welding wires
Flux for submerged arc welding of low alloy steel
Nickel and nickel alloy welding rods
Nickel and nickel alloy welding wires
Technical conditions for spray welding alloy powders
Determination of hardness and particle size of spray welding alloy powders
Analysis method of chemical composition of spray welding alloy powders Extra fine carbon steel welding rods
Manufacturers of welding materials should establish a reliable quality system and have production capacity that can meet user needs. Suppliers of welding materials should generally provide quality certificates (instructions) or qualified marks for welding materials, and ensure that the welding materials they provide meet the requirements of relevant standards or supply agreements. In order to ensure the performance of welding materials, in addition to having the necessary storage, drying and cleaning facilities, enterprises using welding materials should also establish reliable management procedures and strictly implement them. 4 Procurement
4.1 The purchaser of welding materials should have sufficient basic knowledge of welding materials and understand the use and importance of welding materials in welding production.
4.2 The procurement of welding materials should be carried out according to the principle of selecting the best and the best in accordance with the technical conditions of the order. Where possible, try to purchase matching materials.
4.3 When necessary, special welding materials should be purchased from the supplier designated by the welding supervisor. 248 Part 1 Testing methods for major building materials 5 Acceptance
5.1 Acceptance items
The acceptance content of welding materials should be determined based on the manufacturing procedures of welding products, the types of welding products and actual needs. 5.1.1 Packaging inspection
Inspect whether the packaging of welding materials meets the requirements of relevant standards, whether it is intact, and whether there is any damage or moisture. 5.1.2 Quality certificate inspection
For welding materials with quality certificates, check whether the data provided in their quality certificates are complete and meet the specified requirements.
5.1.3 Appearance inspection
Inspect whether the outer surface of the welding material is contaminated, whether there are defects that may affect the welding quality during storage and transportation, whether the identification marks are clear and firm, and whether they are consistent with the actual product. 5.1.4 Composition and performance test
Carry out corresponding tests according to the requirements of relevant standards or supply agreements. 5.2 Approval of inspection results
The inspection method and inspection rules of welding materials should generally be determined according to relevant standards (see reference standards). If necessary, they can also be determined by negotiation between the supply and demand parties.
After the welding materials are inspected and accepted, an inspection report should be issued and approved by the relevant functional departments. 5.3 Acceptance mark
Special marks should be made on each package of welding materials that have passed the acceptance. 6 Warehousing
The warehouse where welding materials are stored can be divided into areas such as "to be inspected", "qualified" and "unqualified" according to needs, and each area should be clearly marked.
Welding materials that have passed the acceptance should be registered in the warehouse. The contents include: a) name, model (or brand) and possible internal transplant code of welding materials; b) specification; c) batch number or furnace number; d) quantity (or weight); e) production date; f) date of entry into the warehouse; g) validity period (from the date of acceptance to the specified period, see 8.3); h) manufacturer. After the welding materials are entered into the warehouse, the corresponding inventory files should be established, such as warehouse registration, quality certificate, acceptance inspection report, inspection and issuance records, etc. 7 Inventory storage 7.1 Storage conditions 7.1.1 The storage warehouse of welding materials should maintain appropriate temperature and humidity. The indoor temperature should be above 5℃ and the relative humidity should not exceed 60%. The room should be kept dry and clean, and no harmful media should be stored. III. Welding rods and flux for construction
7.1.2 Welding materials should be properly stored in accordance with relevant technical requirements and safety regulations. Welding materials that may become ineffective due to moisture absorption should be stored with necessary moisture-proof measures, such as setting up shelves, using moisture-proof agents or dehumidifiers, etc. Welding materials of different types, models, brands, batch numbers, specifications, and storage times should be stored separately and clearly marked to avoid mixing. 7.2 Inspection during the inventory period
The inventory management personnel should have basic knowledge about the storage of welding materials and be familiar with the various management procedures and systems of this position. Regularly inspect the welding materials in stock and make written records of the inspection results. When defects that may affect the welding quality are found due to improper storage, they should be handled in a timely manner in conjunction with the relevant functional departments. 8 Out of the warehouse
8.1 In order to ensure that the welding materials are used within their validity period and avoid the adverse consequences caused by overdue inventory, the issuance of welding materials should be carried out on the principle of first in first out. 8.2 The outbound quantity of welding materials should be strictly controlled according to the product consumption quota, and the material requisition form should be used as the outbound voucher. It can only be issued after approval by the inventory management personnel.
8.3 The welding rods, flux and flux-cored welding wires that have been in stock for more than the specified period must be re-inspected by the relevant functional departments before they can be issued and used. In principle, the re-inspection is mainly to assess whether the welding materials have defects that may affect the welding quality. It is generally limited to appearance and process performance tests, but when there is doubt about the performance of the welding materials, necessary inspection items can be added. The prescribed period can be determined from the date of production in the following ways: a) the period recommended in the welding material quality certificate or instruction manual; 6) two years for acidic welding materials and low-hydrogen welding materials with good moisture-proof packaging and sealing; c) one year for graphite welding materials and other welding materials. 8.4 For welding materials that are seriously damp or deteriorated, the relevant functional departments shall conduct necessary inspections and make decisions on downgrading or scrapping before they are allowed to leave the warehouse. The whereabouts of such welding materials must be strictly controlled. 9 Management during use
9.1 General requirements
9.1.1 The workshop shall set up a special welding material manager to be responsible for the drying, storage, distribution and recycling of welding materials. 9.1.2 The production supervisor of the workshop shall be fully responsible for the management and use of welding materials. The welding technicians and workshop inspectors shall conduct necessary inspections and supervision on the management and use of welding materials to ensure the correct use of welding materials and prevent quality accidents due to poor management of welding materials. 9.2 Drying, insulation and cleaning
9.2.1 The place for drying and cleaning welding materials should be equipped with appropriate drying and insulation facilities and cleaning means. Drying and insulation facilities should have reliable temperature control, time control and display devices. 9.2.2 The drying and insulation of welding materials should be strictly carried out in accordance with relevant technical requirements. When drying welding materials, they should be discharged reasonably to facilitate uniform heating and moisture removal. When drying welding rods, care should be taken to prevent the welding rods from cracking or falling off due to sudden cooling and heating.
9.2.3 In principle, different types of welding materials should be dried separately, but they can be dried in the same furnace under the following conditions: a) The drying specifications are the same;
6) Different types of welding materials are clearly marked to prevent mixing. 250 Part 1 Testing methods for major building materials 9.2.4 The welding material manufacturer should provide clear drying conditions for welding materials with drying requirements. The drying specifications of welding materials can be determined by referring to the requirements of the welding material instructions. Welding materials that must be dried before welding (alkaline low-hydrogen welding rods and ceramic flux) should be dried again before use if they are left at room temperature for more than 4 hours after drying. However, for welding rods with a drying temperature exceeding 350°C, the cumulative drying times should generally not exceed 3 times.
9.2.5 Dried welding materials should be stored within the specified temperature range for use. In order to control the time that the dried welding rods are placed outside the specified temperature range, welders should use insulation cylinders that have been heated to the specified temperature before using welding rods. 9.2.6 The welding material manager should keep detailed records of the drying, insulation, distribution and recovery of welding materials to achieve traceability of the use of welding materials.
9.2.7 The surface of welding wire and welding strip must be smooth and clean. For welding wire and welding strip that are not copper-plated or rust-proofed, they should be degreased, derusted and cleaned before use.
9.3 Identification Marks
During use, attention should be paid to maintaining the identification marks of welding materials to avoid misuse and quality accidents. 9.4 Recycling of welding materials
After the welding work is completed, the remaining welding materials should be recycled. The recycled welding materials should meet the following conditions: a) Clearly marked:
6) Clean and pollution-free.
9.5 Reuse of flux
Flux (especially chromium-containing sintered flux) is generally not suitable for reuse, but it is allowed to be reused when the following conditions are met:
a) Used flux is mixed with new flux of the same batch, and the mixing ratio of the old flux is less than 50% (generally controlled at about 30%);
6) Before mixing, the slag, impurities and dust in the old flux are removed by appropriate methods; c) The particle size of the mixed flux meets the specified requirements. Additional remarks:
This standard is proposed and managed by the National Welding Standardization Technical Committee. The drafting unit of this standard: Harbin Welding Research Institute. The main drafters of this standard: Park Dongguang, Liu Yafang. (II) Standard name code of construction welding rods, welding flux (products) and main technical properties of commonly used welding rods, welding flux (products) 1. Standard names and codes of welding rods and fluxes (products) for construction (1) "Carbon Steel Welding Rods" (GB/T5117-95) (2) "Low Alloy Steel Welding Rods" (GB/T5118-95), 3-1.
(3) "Flux for Submerged Arc Welding of Carbon Steel" (GB5293-85) III. Welding Rods and Fluxes for Construction
(4) "Carbon Steel and Low Alloy Steel Welding Wire for Gas Shielded Arc Welding" (GB/T8110-95)
(5) "Stainless Steel Wire for Welding" (YB/T5092-96) (6) "Steel Wire for Fusion Welding" (GB/T14957-94) (7) "Steel Wire for Gas Shielded Welding" (GB/T14958-94) (8) "Stainless Steel Welding Rod" (GB983-95) (9) "Overlay Welding Rod" (GB984-85) (10) "Steel Strip for Welded Steel Pipe" (GB81 64—93) (11) "Steel Wire Rod for Welding" (GB/T342994) (12) "Weathering Steel for Welding Structures" (GB4172-84) (13) "Stainless Steel Wire Rod for Welding" (GB4241-84) (14) "Carbon Steel Flux-Cored Wire" (GB10045--88) (15) "Flux for Submerged Arc Welding of Low Alloy Steel" (GB12470-90) (16) "Stainless Steel Wire Rod" (GB/T4356--84) (17) "High-quality Carbon Steel Hot-rolled Wire Rod" (GB/T4354-94) (18) "General Provisions for Acceptance Packaging, Marking and Quality Certificate of Steel Wire" (GB2103-88) 2. Extract of main technical properties of commonly used welding rods and fluxes (products) (1) Main technical properties of "Carbon Steel Welding Rods" (GB/T5117-1995) 1) Model classification and numbering method
① Welding rod models are classified according to the mechanical properties of the deposited metal, coating type, welding position and welding current type. See Table 3-1
Welding rod model
Coating type
Welding position
E43 series - deposited metal tensile strength ≥420MPa (43 kgf/mm2) Special type
Ilmenite type
Titanium calcium type
High cellulose sodium type
High cellulose potassium type
High titanium sodium type
High titanium potassium type
Low hydrogen sodium type
Low hydrogen potassium type
Iron oxide type
Flat, vertical, overhead, horizontal
Flat fillet welding
Current type
AC or DC positive, reverse connection|| tt||DC reverse connection
AC or DC reverse connection
AC or DC forward connection
AC or DC forward and reverse connection
DC reverse connection
AC or DC reverse connection
AC or DC forward and reverse connection
AC or DC forward connection
AC or DC forward connection
Part 1 Testing methods for main building materials Standard welding rod models
F5018M|| tt||Coating type
Welding position
E43 series-deposited metal tensile strength ≥420MPa(43kgl/mm2)Iron powder titanium calcium type
Iron powder titanium type
Iron powder iron oxide type
Iron powder low hydrogen type
Flat, flat fillet weld
Flat fillet weld
Flat, flat fillet weld
F50 series-melt metal tensile strength ≥490MPa( 50kgf/mm2）Ilmenite type
Titanium calcium type
High cellulose sodium type
High cellulose potassium type
Iron powder titanium type
Low ammonia sodium type
Low hydrogen potassium type
Iron powder low hydrogen potassium type
Iron powder low hydrogen type
Iron powder titanium calcium type
Iron powder titanium type
Iron powder iron oxide type
Iron powder low hydrogen type
Note: 1. The meaning of the Chinese characters in the welding position column: horizontal downward vertical welding.
Flat, vertical, suppressed, horizontal
Flat, flat fillet welding
Flat, suppressed, horizontal, vertical downward
Flat welding, vertical--vertical welding, upward
Current type
AC or DC positive and reverse connection
AC or DC positive and reverse connection
AC or DC positive connection
AC or DC reverse connection
AC or DC positive and reverse connection
DC reverse connection
AC or DC reverse connection
AC or DC positive and reverse connection
DC Reverse connection
AC or DC reverse connection
DC reverse connection
AC or DC positive and negative connection
AC or DC positive and negative connection
AC or DC positive connection
AC or DC reverse connection
-Overhead welding, horizontal-horizontal welding, flat fillet welding, horizontal fillet welding, vertical downward 2. Vertical and overhead in the welding position column refer to E5014, E××15, E××16, E5018 and E5018M type welding rods with a diameter not greater than 4.0mm and other types of welding rods with a diameter not greater than 5.0mm suitable for vertical welding and overhead welding. 3. E4322 type welding rod is suitable for single-pass welding.
②The method of compiling the welding rod model is as follows: the letter "E" indicates that the welding rod has the minimum tensile strength of the deposited metal in the first two digits; the third digit indicates the welding position of the welding rod, "0" and "1" indicate that the welding rod is suitable for all-position welding (flat, vertical, overhead, horizontal), "2" indicates that the welding rod is suitable for flat welding and flat angle welding, and "4" indicates that the welding rod is suitable for downward vertical welding; the third and fourth digits are combined to indicate the type of welding current and the type of coating. Adding "R" after the fourth digit indicates a moisture-resistant welding rod; adding "M" indicates a welding rod with special provisions for moisture resistance and mechanical properties; adding "-1" indicates a welding rod with special provisions for impact properties. The complete welding rod model is as follows:
indicates that the welding rod coating is low-hydrogen sodium type and DC reverse welding is adopted. It indicates that the welding rod is suitable for all-position welding.||tt| |Indicates the minimum tensile strength of the deposited metal. Indicates the welding rod.
2) Technical requirements
① Dimensions
The dimensions of the welding rod shall comply with the provisions of Table 3-2.
III. Welding rods and fluxes for construction
It is allowed to manufacture welding rods with a diameter of 2.4mm or 2.6mm instead of 2.5mm welding rods, welding rods with a diameter of 3.0mm instead of 3.2mm welding rods, welding rods with a diameter of 4.8mm instead of 5.0mm welding rods, and welding rods with a diameter of 5.8mm instead of 6.0mm welding rods. According to the requirements of the purchaser, it is allowed to supply welding rods of other sizes through agreement. The length of the clamping end of the welding rod shall comply with the provisions of Table 3-3. Welding rod size
Basic size
Welding rod diameter
Limit deviation
Clamping end length
Clamping end length
10 ~ 30
Note: For electrodes used for gravity welding, the clamping length shall not be less than 25mm. ② Coating
The welding core and coating shall not have any defects that affect the quality of the electrode. Specification:
Basic size
200~250
250～350
350450
450~700
Electrode diameter
(mm)Table 3-2
Limit deviation
(mm)Table 3-3
Length of clamping end
The coating at the electrode lead end shall be chamfered, and the end face of the welding core shall be exposed to ensure easy lead. The exposed core of the electrode shall comply with the following For low-hydrogen type welding rods, the exposed core length along the length direction shall not be greater than half of the welding core diameter or 1.6mm, whichever is smaller.
For other types of welding rods, the exposed core length along the length direction shall not be greater than two-thirds of the welding core diameter or 2.4mm, whichever is smaller.
The exposed core along the circumferential direction of welding rods of various diameters shall not be greater than half of the circumference. The eccentricity of welding rods shall comply with the following provisions:
For welding rods with a diameter not exceeding 2.5mm, the eccentricity shall not be greater than 7%; for welding rods with a diameter of 3.2mm and 4.0mm, the eccentricity shall not be greater than 5%; 254
Part I Test Method Standard for Main Building Materials with a diameter not less than 5.0mm welding rod, eccentricity should not be greater than 4%. (Maximum thickness of the coating layer of the welding rod section + welding core diameter) - (Minimum thickness of the coating layer of the same section + welding core diameter) welding rod eccentricity - (maximum thickness of the coating layer of the welding rod section) (higher than the maximum thickness of the coating layer of the welding rod section: the highest thickness of the welding rod section: >2×100%③T-joint fillet weld
The surface of the fillet weld should be free of cracks, weld nodules, slag inclusions and surface pores after visual inspection. Individual short welds are allowed and the depth is less than 1mm
The leg size of fillet weld shall comply with the provisions of Table 3-4. The convexity of convex fillet weld and the difference between the two leg lengths of fillet weld shall comply with the provisions of Table 3-5.
(mm）
Table 3-4
Welding rod model
E××03
E××10
E××11
Ex×15
E× ×16
Electrode diameter
Test plate size
Plate thickness T
Plate length L (not less than)
300, 400
300, 400
300., 400
Welding position
Vertical, overhead
Vertical, overhead
Vertical, overhead
Vertical, overhead
Weld leg size
Electrode model
E× ×23
E× ×24
E× ×27
E× ×28
Welding rod diameter
Test plate size
Plate thickness T
Note: "××\" in the welding rod model represents "43\" or "50\. Weld foot size
Plate length L (not less than)
250, 300
300, 400
300, 400
400, 650
300, 400
Convexity (not more than)
, welding rod for construction, flux
Welding position
Vertical, overhead
Vertical downward, overhead
Horizontal, vertical downward
Weld foot size
(mm) Table 3- 5
Difference between two weld legs (not more than)
The two longitudinal fracture surfaces of the fillet weld should be free of cracks after visual inspection. The total length of the weld root without fusion should not exceed 20% of the total length of the weld. For fillet welds welded with E4312, E4313 and E5014 electrodes, when the depth of unfusion is not more than 25% of the smallest weld leg, it is allowed to exist continuously; for fillet welds welded with other types of electrodes, when the depth of unfusion is not more than 25% of the smallest weld leg, the length of continuous unfusion should not exceed 25mm. The fillet weld test does not check internal pores. ④ Chemical composition of deposited metal
The chemical composition of deposited metal shall comply with the provisions of Table 3-6. Chemical composition of deposited metal (%)
Electrode model
E4300.E4301
FA303, E4310,
F4311, E4312
E4313, F4320,
F4322, E4323,
F4324, E4327,
E5001, E5003,||t t||E5010、E5011
E5015、E5016、
E5018、E5027
E4315、E4316、
E4328、E5014、
E5023、E5024
E5028、E5048
E5018M
Note: The single values ​​in the table are all maximum values.
③ Mechanical properties
Table 3-6
MnNiCrMoV Total
The results of the tensile test of deposited metal and the transverse tensile test of the weld of E4322 type electrode shall comply with the provisions of Table 3-7. The results of the Charpy V-notch impact test of the weld metal shall comply with the provisions of Table 3-8. After bending, the longitudinal bending specimen of the weld metal of the E4322 electrode should not have cracks larger than 3.2mm on the weld. Service point.
Electrode model
E4300, E4301, F4303,
E4310, E4311, F4315.
E4316, E4320, E4323,
E4327, E4328
E4312, E4313, E4324
Tensile strengthob
(kgf/mm2)
(kgf/mm2)||t t||Not required
Table 3-7
Elongation s
Electrode model
E5001, E5003, E5010, F5011
E5015, E5016, E5018
E5027, E5028.E5048
F5014, E5023.E5024
E5018M
Note: 1. The single values ​​in the table are all minimum values. Tensile strength ch
2. The minimum elongation of E5024-1 electrode is 22%. (kgf/mm2)
3. Welding rods and flux for construction
Yield point s
365~500
(kgf/mm2)
(37~51)
Elongation 35
3. The tensile strength of the deposited metal of E5018M type welding rod is nominally 490MPa (50kgf/mm2), and the yield point of the welding rod with a diameter of 2.5mm is not more than 530MPa (54kgf/mm2).
Table 3-8
Welding rod model
E××10, E××11.E××15,
E××16, E××18, E××27,
E××01, E××28.E5024-1
E4300E××03, E××23
E5015-1
E5016-1
E5018-1
E5018M
E4312, E4313, E4320
E4322, E5014, E× ×24
Charpy √-notch impact absorption energy J (not less than) Average value of 3 values ​​in 5 samples
Average value of 5 samples
Test temperature, C
①When calculating the average value of 3 values ​​in 5 samples, the maximum and minimum values ​​of the 5 values ​​should be discarded, and the remaining 3 values ​​must have two values ​​not less than 27J and the other value not less than 20J.
②Use the values ​​of 5 samples to calculate the average value, and 4 of the 5 values ​​must be not less than 67 and the other value must be not less than 54J. ③Radiographic flaw detection of welds
Weld metal flaw detection shall comply with the provisions of Table 3-9. Table 3-9
E××01, E××15, E××16, E5018, E5018M, E4320, E5048E4300, E××03, E××10E××11, E4313, E5014, E××23, E××24, E××27, E××28
E4312, E4322
Requirements for radiographic flaw detection films of weld metal0
Test plate size
Plate thickness T
Plate length L (not less than)
300, 400
300, 400
300., 400
Welding position
Vertical, overhead
Vertical, overhead
Vertical, overhead
Vertical, overhead
Weld leg size
Electrode model
E××23
E××24
E××27
E× ×28
Welding rod diameter
Test plate size
Plate thickness T
Note: The "××\" in the welding rod model represents "43\" or "50\. Weld foot size
Plate length L (not less than)
250, 300
300, 400
300, 400
400, 650
300, 400
Convexity (not more than)
, welding rod for construction, flux
Welding position
Vertical, overhead||t t||Vertical downward, upward
Horizontal, vertical downward
Weld leg size
(mm) Table 3-5
Difference between two weld legs (not more than)
The two longitudinal fracture surfaces of the fillet weld should be free of cracks after visual inspection. The total length of the weld root that is not fused should not exceed 20% of the total length of the weld. For fillet welds welded with E4312, E4313 and E5014 electrodes, when the depth of unfused is not more than 25% of the minimum weld leg, it is allowed to exist continuously; for fillet welds welded with other types of electrodes, When the depth of unfused joints is not greater than 25% of the minimum weld leg, the length of continuous unfused joints shall not be greater than 25mm. The fillet weld test does not inspect internal pores. ④ Chemical composition of deposited metal
The chemical composition of deposited metal shall comply with the provisions of Table 3-6. Chemical composition of deposited metal (%)
Electrode model
E4300.E4301
FA303, E4310,
F4311, E4312
E4313, F4320,
F4322, E4323,
F4324, E432 7、
E5001、E5003、
E5010、E5011
E5015、E5016、
E5018、E5027
E4315、E4316、
E4328、E5014、
E5023、E5024
E5028、E5048
E5018M
Note: The single values ​​in the table are all maximum values.
③ Mechanical properties
Table 3-6
MnNiCrMoV Total
The results of deposited metal tensile test and E4322 type electrode weld transverse tensile test shall comply with the requirements of Table 3-7. The results of the Charpy V-notch impact test of the weld metal shall comply with the requirements of Table 3-8. After bending, the longitudinal bending specimen of the weld metal of the E4322 electrode shall not have cracks larger than 3.2mm on the weld. Service point.
Welding rod model
E4300, E4301, F4303,
E4310, E4311, F4315.
E4316, E4320, E4323,
E4327, E4328
E4312, E4313, E4324
Tensile strengthob
(kgf/mm2)
(kgf/mm2)||t t||Not required
Table 3-7
Elongation s
Electrode model
E5001, E5003, E5010, F5011
E5015, E5016, E5018
E5027, E5028.E5048
F5014, E5023.E5024
E5018M
Note: 1. The single values ​​in the table are all minimum values. Tensile strength ch
2. The minimum elongation of E5024-1 electrode is 22%. (kgf/mm2)
3. Welding rods and flux for construction
Yield point s
365~500
(kgf/mm2)
(37~51)
Elongation 35
3. The tensile strength of the deposited metal of E5018M type welding rod is nominally 490MPa (50kgf/mm2), and the yield point of the welding rod with a diameter of 2.5mm is not more than 530MPa (54kgf/mm2).
Table 3-8
Welding rod model
E××10, E××11.E××15,
E××16, E××18, E××27,
E××01, E××28.E5024-1
E4300E××03, E××23
E5015-1
E5016-1
E5018-1
E5018M
E4312, E4313, E4320
E4322, E5014, E× ×24
Charpy √-notch impact absorption energy J (not less than) Average value of 3 values ​​in 5 samples
Average value of 5 samples
Test temperature, C
①When calculating the average value of 3 values ​​in 5 samples, the maximum and minimum values ​​of the 5 values ​​should be discarded, and the remaining 3 values ​​must have two values ​​not less than 27J and the other value not less than 20J.
②Use the values ​​of 5 samples to calculate the average value, and 4 of the 5 values ​​must be not less than 67 and the other value must be not less than 54J. ③Radiographic flaw detection of welds
Weld metal flaw detection shall comply with the provisions of Table 3-9. Table 3-9
E××01, E××15, E××16, E5018, E5018M, E4320, E5048E4300, E××03, E××10E××11, E4313, E5014, E××23, E××24, E××27, E××28
E4312, E4322
Requirements for radiographic flaw detection films of weld metal0
Test plate size
Plate thickness T
Plate length L (not less than)
300, 400
300, 400
300., 400
Welding position
Vertical, overhead
Vertical, overhead
Vertical, overhead
Vertical, overhead
Weld leg size
Electrode model
E××23
E××24
E××27
E× ×28
Welding rod diameter
Test plate size
Plate thickness T
Note: The "××\" in the welding rod model represents "43\" or "50\. Weld foot size
Plate length L (not less than)
250, 300
300, 400
300, 400
400, 650
300, 400
Convexity (not more than)
, welding rod for construction, flux
Welding position
Vertical, overhead||t t||Vertical downward, upward
Horizontal, vertical downward
Weld leg size
(mm) Table 3-5
Difference between two weld legs (not more than)
The two longitudinal fracture surfaces of the fillet weld should be free of cracks after visual inspection. The total length of the weld root that is not fused should not exceed 20% of the total length of the weld. For fillet welds welded with E4312, E4313 and E5014 electrodes, when the depth of unfused is not more than 25% of the minimum weld leg, it is allowed to exist continuously; for fillet welds welded with other types of electrodes, When the depth of unfused joints is not greater than 25% of the minimum weld leg, the length of continuous unfused joints shall not be greater than 25mm. The fillet weld test does not inspect internal pores. ④ Chemical composition of deposited metal
The chemical composition of deposited metal shall comply with the provisions of Table 3-6. Chemical composition of deposited metal (%)
Electrode model
E4300.E4301
FA303, E4310,
F4311, E4312
E4313, F4320,
F4322, E4323,
F4324, E432 7、
E5001、E5003、
E5010、E5011
E5015、E5016、
E5018、E5027
E4315、E4316、
E4328、E5014、
E5023、E5024
E5028、E5048
E5018M
Note: The single values ​​in the table are all maximum values.
③ Mechanical properties
Table 3-6
MnNiCrMoV Total
The results of deposited metal tensile test and E4322 type electrode weld transverse tensile test shall comply with the requirements of Table 3-7. The results of the Charpy V-notch impact test of the weld metal shall comply with the requirements of Table 3-8. After bending, the longitudinal bending specimen of the weld metal of the E4322 electrode shall not have cracks larger than 3.2mm on the weld. Service point.
Welding rod model
E4300, E4301, F4303,
E4310, E4311, F4315.
E4316, E4320, E4323,
E4327, E4328
E4312, E4313, E4324
Tensile strengthob
(kgf/mm2)
(kgf/mm2)||t t||Not required
Table 3-7
Elongation s
Electrode model
E5001, E5003, E5010, F5011
E5015, E5016, E5018
E5027, E5028.E5048
F5014, E5023.E5024
E5018M
Note: 1. The single values ​​in the table are all minimum values. Tensile strength ch
2. The minimum elongation of E5024-1 electrode is 22%. (kgf/mm2)
3. Welding rods and flux for construction
Yield point s
365~500
(kgf/mm2)
(37~51)
Elongation 35
3. The tensile strength of the deposited metal of E5018M type welding rod is nominally 490MPa (50kgf/mm2), and the yield point of the welding rod with a diameter of 2.5mm is not more than 530MPa (54kgf/mm2).
Table 3-8
Welding rod model
E××10, E××11.E××15,
E××16, E××18, E××27,
E××01, E××28.E5024-1
E4300E××03, E××23
E5015-1
E5016-1
E5018-1
E5018M
E4312, E4313, E4320
E4322, E5014, E× ×24
Charpy √-notch impact absorption energy J (not less than) Average value of 3 values ​​in 5 samples
Average value of 5 samples
Test temperature, C
①When calculating the average value of 3 values ​​in 5 samples, the maximum and minimum values ​​of the 5 values ​​should be discarded, and the remaining 3 values ​​must have two values ​​not less than 27J and the other value not less than 20J.
②Use the values ​​of 5 samples to calculate the average value, and 4 of the 5 values ​​must be not less than 67 and the other value must be not less than 54J. ③Radiographic flaw detection of welds
Weld metal flaw detection shall comply with the provisions of Table 3-9. Table 3-9
E××01, E××15, E××16, E5018, E5018M, E4320, E5048E4300, E××03, E××10E××11, E4313, E5014, E××23, E××24, E××27, E××28
E4312, E4322
Requirements for radiographic flaw detection films of weld metalE4301
FA303, E4310,
F4311, E4312
E4313, F4320,
F4 322, E4323,
F4324, E4327,
E5001, E5003,
E5010, E5011||t t||E5015、E5016、
E5018、E5027
E4315、E4316、
E4328、E5014、
E5023、E5024
E5028、E5048
E5018M
Note: The single values ​​in the table are all maximum values.
③ Mechanical properties
Table 3-6
MnNiCrMoV Total
The results of the tensile test of deposited metal and the transverse tensile test of the weld of E4322 type welding rod shall comply with the provisions of Table 3-7. The results of the Charpy V-notch impact test of the weld metal shall comply with the provisions of Table 3-8. After bending, the longitudinal bending specimen of the weld metal of the E4322 electrode should not have cracks larger than 3.2mm on the weld. Service point.
Electrode model
E4300, E4301, F4303,
E4310, E4311, F4315.
E4316, E4320, E4323,
E4327, E4328
E4312, E4313, E4324
Tensile strengthob
(kgf/mm2)
(kgf/mm2)||t t||Not required
Table 3-7
Elongation s
Electrode model
E5001, E5003, E5010, F5011
E5015, E5016, E5018
E5027, E5028.E5048
F5014, E5023.E5024
E5018M
Note: 1. The single values ​​in the table are all minimum values. Tensile strength ch
2. The minimum elongation of E5024-1 electrode is 22%. (kgf/mm2)
3. Welding rods and flux for construction
Yield point s
365~500
(kgf/mm2)
(37~51)
Elongation 35
3. The tensile strength of the deposited metal of E5018M type welding rod is nominally 490MPa (50kgf/mm2), and the yield point of the welding rod with a diameter of 2.5mm is not more than 530MPa (54kgf/mm2).
Table 3-8
Welding rod model
E××10, E××11.E××15,
E××16, E××18, E××27,
E××01, E××28.E5024-1
E4300E××03, E××23
E5015-1
E5016-1
E5018-1
E5018M
E4312, E4313, E4320
E4322, E5014, E× ×24
Charpy √-notch impact absorption energy J (not less than) Average value of 3 values ​​in 5 samples
Average value of 5 samples
Test temperature, C
①When calculating the average value of 3 values ​​in 5 samples, the maximum and minimum values ​​of the 5 values ​​should be discarded, and the remaining 3 values ​​must have two values ​​not less than 27J and the other value not less than 20J.
②Use the values ​​of 5 samples to calculate the average value, and 4 of the 5 values ​​must be not less than 67 and the other value must be not less than 54J. ③Radiographic flaw detection of welds
Weld metal flaw detection shall comply with the provisions of Table 3-9. Table 3-9
E××01, E××15, E××16, E5018, E5018M, E4320, E5048E4300, E××03, E××10E××11, E4313, E5014, E××23, E××24, E××27, E××28
E4312, E4322
Requirements for radiographic flaw detection films of weld metalE4301
FA303, E4310,
F4311, E4312
E4313, F4320,
F4 322, E4323,
F4324, E4327,
E5001, E5003,
E5010, E5011||t t||E5015、E5016、
E5018、E5027
E4315、E4316、
E4328、E5014、www.bzxz.net
E5023、E5024
E5028、E5048
E5018M
Note: The single values ​​in the table are all maximum values.
③ Mechanical properties
Table 3-6
MnNiCrMoV Total
The results of the tensile test of deposited metal and the transverse tensile test of the weld of E4322 type welding rod shall comply with the provisions of Table 3-7. The results of the Charpy V-notch impact test of the weld metal shall comply with the provisions of Table 3-8. After bending, the longitudinal bending specimen of the weld metal of the E4322 electrode should not have cracks larger than 3.2mm on the weld. Service point.
Electrode model
E4300, E4301, F4303,
E4310, E4311, F4315.
E4316, E4320, E4323,
E4327, E4328
E4312, E4313, E4324
Tensile strengthob
(kgf/mm2)
(kgf/mm2)||t t||Not required
Table 3-7
Elongation s
Electrode model
E5001, E5003, E5010, F5011
E5015, E5016, E5018
E5027, E5028.E5048
F5014, E5023.E5024
E5018M
Note: 1. The single values ​​in the table are all minimum values. Tensile strength ch
2. The minimum elongation of E5024-1 electrode is 22%. (kgf/mm2)
3. Welding rods and flux for construction
Yield point s
365~500
(kgf/mm2)
(37~51)
Elongation 35
3. The tensile strength of the deposited metal of E5018M type welding rod is nominally 490MPa (50kgf/mm2), and the yield point of the welding rod with a diameter of 2.5mm is not more than 530MPa (54kgf/mm2).
Table 3-8
Welding rod model
E××10, E××11.E××15,
E××16, E××18, E××27,
E××01, E××28.E5024-1
E4300E××03, E××23
E5015-1
E5016-1
E5018-1
E5018M
E4312, E4313, E4320
E4322, E5014, E× ×24
Charpy √-notch impact absorption energy J (not less than) Average value of 3 values ​​in 5 samples
Average value of 5 samples
Test temperature, C
①When calculating the average value of 3 values ​​in 5 samples, the maximum and minimum values ​​of the 5 values ​​should be discarded, and the remaining 3 values ​​must have two values ​​not less than 27J and the other value not less than 20J.
②Use the values ​​of 5 samples to calculate the average value, and 4 of the 5 values ​​must be not less than 67 and the other value must be not less than 54J. ③Radiographic flaw detection of welds
Weld metal flaw detection shall comply with the provisions of Table 3-9. Table 3-9
E××01, E××15, E××16, E5018, E5018M, E4320, E5048E4300, E××03, E××10E××11, E4313, E5014, E××23, E××24, E××27, E××28
E4312, E4322
Requirements for radiographic flaw detection films of weld metal
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