SJ 20670-1998 Specification for zirconium-aluminum getter

SJ 20670-1998 Zirconium Aluminum Getter Specification SJ20670-1998 Standard download decompression password: www.bzxz.net

Military Standard for Electronic Industry of the People's Republic of China FL5971
SJ 20670 - 1998
Specification for Zr-Al getters1998-03-11 Issued
1998-05-01 Implementation
Approved by the Ministry of Electronic Industry of the People's Republic of China Military Standard for Electronic Industry of the People's Republic of China Specification for Zr-Al getters
Specification for Zr-Algetters1 Scope
1.1 Subject Content
SJ 20670 - 1998
This specification specifies the requirements, quality assurance provisions and delivery preparation for non-evaporable zirconium aluminum getters. 1.2 Scope of Application
This specification applies to zirconium aluminum getters used in devices such as electron tubes, electric light sources, and getter pumps. 1.3 Classification
The category and model naming of getters should comply with the provisions of GB4965. 2 References
GB496585 Classification and model naming method of getters GB9506.1-88 General rules for getter performance test methods GB9506.8-88 Test method for getter performance of non-evaporable getters GB9506.988 Test method for getter loading GB9506.10-88 Test method for getter pressing or sintering firmness GB9506.11-88 Test method for getter bracket welding strength GJB179A96 Counting sampling inspection procedures and table 3 requirements
3.1 Qualification
Products submitted according to this specification should be qualified or finalized products. 3.2 Product shape and structure
Products are divided into ring, disc and strip according to their shapes, as shown in Figure 1. Issued by the Ministry of Electronics Industry of the People's Republic of China on March 11, 1998 and implemented on May 1, 1998
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3.3 Product models and dimensions
SI 20670 —— 1998
Figure 1 Schematic diagram of shape and structure
The product models and dimensions are shown in Table 1, Table 2 and Table 3 respectively. Table 1 Ring-shaped getter
z12U1150x
Z1UCS0X
Z12C100X
75J22Q
78130Q
78J60Q
Outer diameter (D)
5.2 ± 0.1
11.00 ±0.15
11.5 ± 0.5
Length (L)
10.0±0.5
Inner diameter (d)
6.80 ± 0.15
2 Disc-shaped getter
Width (6)
5.6 ± 0.3
Table 3 Strip getter
Band width (C)
4.5 ±0.1
4.5 ±0.1
Height (h)
0.6 ± 0.1
1.10±0.15
1.20 ±0.15
Height (h)）
Standard length (t)
10.0±0.2
15.0±0.2
Pit diameter (4)
7.1 ±0.3
Powder width (D)
4.0 ± 0.1
5.5 ±0.1
3.4Appearance
SJ 20670 -- 1998
The surface of the getter should not have oil, scratches or inclusions. The surface of the powder layer should be uniform. 3.5 Loading capacity
The loading capacity of the getter should meet the requirements of Table 4.
Table 4 Loading capacity of getter
Z11U100I
ZUUIO0X
Z12U150X
Z10C50X
Z12C100X
Z5J220
28J30Q
28J600
3.6 Pressing firmness
Loading capacity
mg/cn?
Loading capacity tolerance
The getter load should be pressed firmly. After the firmness test, the weight loss should be less than 0.3% of the powder weight. 3.7 Welding strength of bracket
Welding strength of getter bracket should not fall off after bending at the angle specified in GB9506.11. 3.8 Inhalation performance
Compared with the typical inhalation performance curve given in Appendix A (Supplement), the decrease of the corresponding value of the inhalation performance curve of various shapes of getters shall not exceed 20%.
4 Quality assurance provisions
4.1 Inspection responsibility
Unless otherwise specified in the contract or order, the contractor shall be responsible for completing all inspections specified in this specification. If necessary, the ordering party or the grade appraisal agency has the right to inspect any inspection item described in the specification. 4.1.1 Qualification responsibility
All products must meet all requirements of Chapter 3 and Chapter 5 of the specification. The inspection specified in this specification shall become an integral part of the contractor's entire inspection system or quality outline. If the contract includes inspection requirements not specified in this specification, the contractor shall also ensure that the products submitted for acceptance meet the contract requirements. Quality-Consistency Sampling It is not allowed to submit products that are known to be defective, nor can the ordering party be required to accept defective products. 4.2 Inspection ClassificationbZxz.net
The inspection specified in this specification is divided into:
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a. Identification inspection;
b. Quality consistency inspection.
4.3 Inspection Conditions
SJ 20670 --- 1998
Unless otherwise specified, various inspections shall be carried out in accordance with the provisions of CB9506.1. 4.4 Identification Inspection
4.4.1 The identification inspection shall be carried out in a laboratory agreed by the relevant competent authorities, and the inspection samples shall be products produced by the equipment and processes normally used in production.
4.4.2 The samples for identification inspection shall be randomly selected from a production process. 4.4.3 The items, inspection sequence, number of samples to be inspected and the number of unqualified products allowed for identification inspection shall be in accordance with Table 5. Table 5 Qualification test
Group number
Test items
Overall dimensions
Pressure firmness
Standard welding strength
Loading capacity
Air inhalation performance
Required clause number
, Number of samples tested (1)
Test clause number
Note: Samples that have passed the first group of tests shall continue to undergo the second group of tests, and the third group of tests shall be sampled separately. 4.4.4 Unqualified
Qualification approval shall be refused if the number of unqualified products exceeds the permissible number of unqualified products given in Table 5. 4.4.5 Maintaining qualification for qualification
Number of unqualified products allowed
In order to maintain qualification, the contractor shall submit a quality consistency inspection report to the qualification qualification unit every two years. The inspection shall be carried out using samples of the same model produced during this period. 4.5 Quality-Conformity Inspection
4.5.1 Inspection Batch
An inspection batch shall consist of metal products of the same design, manufactured under the same conditions (same materials, same process) and submitted for acceptance at one time.
4.5.2 Inspection Items
Quality conformity inspection shall be carried out in accordance with the provisions of Table 6.
Table 6 Quality - Conformity Inspection
Inspection Items
Dimensions
Pressure Firmness
Standard Welding Strength
Once a year) Loading Marking
Required Article Number
Inspection Method Article Number
4.5.3 Sampling
SJ 20670 - 1998
Group A and Group C inspections are conducted according to GIR 179A, with the special inspection level of S-1 and the acceptable quality level (AOL) of 2.5, using a normal sampling plan.
Group B inspection sampling Two samples are randomly selected from an inspection batch (50mm for strip products), and no unqualified products are allowed.
4.5,3 Failure
If a batch is rejected, the contractor may take back the batch for rework to eliminate defects or remove unqualified products, and then resubmit for inspection. The resubmitted batch should be separated from the new batch and clearly marked as a resubmitted batch. 4.6 Inspection method
4.6.1 The outer dimensions of the product shall be inspected with a caliper with an accuracy of 0.02mm. 4.6.2 The appearance of the product shall be inspected visually. 4.6.3 The loading capacity of the product shall be measured in accordance with GB 9506.9. 4.6.4 The pressing firmness of the product shall be measured in accordance with CB9506.10. 4.6.5 The welding strength of the product bracket shall be measured in accordance with GB9506.11. 4.6.6 The air absorption performance of the product shall be measured in accordance with CB9506.8 according to the activation conditions listed in Table 7. Table 7 Recommended activation conditions
Temperature range
Maximum starting pressure
750~800°℃
800-850%
4.6.7 The packaging of the product shall be visually inspected and shall comply with the provisions of this specification. 5 Delivery preparation
5.1 Marking, packaging, transportation, storage
900 ~ 950℃
5.1.1 The product should be packaged in a sealed iron can (iron box) filled with dry nitrogen or dry silica gel, marked with: product, name of the manufacturer, code:
b. Product name;
c. Product model and batch number;
d. Product quantity (length);
e. Packaging date.
5.1.2 During transportation, the packaged product should be placed in an outer packaging container with a certain strength, filled with shockproof materials around it, and then nailed and tightened. The outer packaging should indicate: a. Name and code of the manufacturer
b. Name of the product;
center. Number of products (length):
d. Moisture-proof, fire-proof, handle with care signs and words 5.1.3 The package should be accompanied by a quality assurance certificate and indicate: a. Name and code of the manufacturer;
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b. Name, model and batch number of the product:
c. Number of products;
SJ 20670 — 1998
d. Inspection results, inspector code and inspection department stamp: e. Name and number of this specification:
t. Production date, effective date.
5.1.4 During transportation, the product should be protected from moisture and strong collision, and kept away from high temperature and fire sources. 5 The validity period of this product is one year. After opening, avoid exposure to the atmosphere and store in dry air for no more than 24 hours. 5.1.5
6 Notes
6.1 Intended use
The products specified in this specification are intended for use in electron tubes, electric light sources, and suction pumps, etc. 6.2 Contents of ordering documents
a. Name and number of this specification;
b. Product model.
—6→
SJ 20670 -- 1998
Appendix A
Typical getter performance curves of various shapes of getters (supplement)
Test gas
Constant pressure on getter
Test conductance (25~200'℃)
200℃
Test gas
8x10\Pa
100cmls-1
Inhalation volume (×133Pacan/cm*)
Constant pressure on getter
4×104pa
Test conductance (25~200℃) 10cim's(300~400℃)± 40cms
For suction (×133Pacm/cm)
Figure A1Annular, disc-shaped getter
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Additional notes:
SJ 20670 — 1998
Test gas
Constant pressure on getter
8x10-pa
Test conductance (25~200℃)100cm's1C
Suction volume (×133Pacm/em)
Test gas
Constant pressure on getter
4×10-pa
(25~200℃)10cms
Test conductance
(300~400℃) 40cm's-
: Inhalation volume (x133Pacm/cm)
Figure A2 Strip absorbent
This specification is under the jurisdiction of China Electronics Technology Standardization Institute. This specification was drafted by China Electronics Technology Standardization Institute and State-owned No. 74 Factory. The main drafters of this specification are Li Xiaoying and Wei Haining, and the project code is B65008.
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