JB/T 10045.4-1999 Thermal cutting plasma arc cutting quality and dimensional deviation

JB/T 10045.4-1999 This standard is a revision of ZB J59 002.4-88 "Quality and Dimension Deviation of Plasma Arc Cutting for Thermal Cutting". During the revision, only editorial changes were made according to relevant regulations, and the technical content remained unchanged. This standard specifies the quality grade, dimensional deviation and measurement method of plasma arc cutting surface. This standard is applicable to mechanized and semi-mechanized plasma arc cutting of low carbon steel, medium carbon steel, ordinary alloy structural steel, high alloy steel, aluminum and stainless steel rolled steel. This standard was first issued on August 10, 1988. JB/T 10045.4-1999 Quality and Dimension Deviation of Plasma Arc Cutting for Thermal Cutting JB/T10045.4-1999 Standard download decompression password: www.bzxz.net

JB/T10045.4—1999
This standard is an editorial revision of ZBJ59002.4—88 Thermal Cutting, and the main technical content remains unchanged. The revision of the previous
Plasma Cutting Quality and Dimensional Deviation. During the revision, only the compilation of this standard was made. It will replace ZBJ59002.4—88 from the date of implementation. This standard is proposed and managed by the National Welding Standardization Technical Committee. The responsible drafting unit of this standard: Harbin Welding Research Institute. The main drafters of this standard: Wen Zhonghe, Liu Qingfa, Li Tingwei This standard was first issued in 1988, and this revision is the first revision. 680
1 Scope
Machinery Industry Standard of the People's Republic of China
Thermal Cutting
Plasma Arc Cutting Quality and Dimensional Deviation
Thermal cutting-Quality and dimensional deviation of plasma cutting
This standard specifies the quality grade, dimensional deviation and measurement method of plasma arc cutting surface. JB/T 10045.4—1999
Replaces ZBJ59002.4—88
This standard applies to mechanized and semi-mechanized plasma cutting of low carbon steel, medium carbon steel, ordinary low alloy structural steel, high alloy steel, aluminum and stainless steel rolled steel.
Cited 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 are valid. All standards will be revised, and the parties using this standard should explore the possibility of using the latest version of the following standards. JB/T10045.3--1999 Thermal Cutting Gas Cutting Quality and Dimension Deviation 3 Cutting Surface Quality
The cutting surface quality is evaluated by the two parameters of cutting surface flatness u and cutting depth; dross, post-application, upper edge melting degree and notch are not used as the basis for quality classification.
The quality of the cut surface of X, Y, V, and K-shaped cuts shall be evaluated separately for each cut surface. 3.1 The quality of the cut surface is divided into two levels, I and 1. The grading ranges of the cut surface flatness u and the cut depth h are shown in Figures 1 and 2. mm
Weijie Heavy Separation
Incision Thickness
Quality!
Quality 1
Figure 1 Cutting Surface Flatness (Numerical Values ​​Indicate Upper Limit) BookbZxz.net
3.2 When there are special requirements, the quality of the cut surface can also be agreed upon by both the supplier and the buyer. The agreed cutting surface flatness u and cutting depth h should be indicated on the drawing, as shown in 6.3b) of JB/T10045.3--1999 approved by the State Bureau of Machinery Industry on June 24, 1999, and implemented on January 1, 2000. um
4 Workpiece dimensional deviation
130 Quality I
Quality plate!
Figure 2 Cutting depth (the value indicates the upper limit)
Workpiece dimensional deviation refers to the difference between the basic size of the workpiece and the actual size after cutting. The actual size should be measured after the incision is cleaned and cooled to room temperature. The workpiece dimensional deviation is shown in Table 1. The deviation includes the deviation caused by the flatness of the cutting surface. Table 1 Workpiece size deviation
Cutting thickness
5～50
5～50
35~315
Note: The workpiece size deviations listed in the table are applicable to a) dimensions without tolerances on the drawing;
b) workpieces with an aspect ratio less than or equal to 4:1; c) workpieces with a cutting circumference greater than or equal to 350mm. Determination and marking of cut surface quality
Basic size range
315～1000
1000~～2000
5.1 The values ​​of the flatness u and the cutting depth h of the cut surface can be measured respectively by measuring instruments and measuring tools. 5.2 The measurement method of the cut surface and the marking on the drawing shall be carried out in accordance with the requirements of JB/T10045.3. 632
2000-~4000
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