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Electronic Industry Standard of the People's Republic of China
SJ/T 10536. 1--2- 94
Tungsten-tungsten alloy screw
Published on 1994-08-08
Implemented on 1994-12-01
Published by the Ministry of Electronics Industry of the People's Republic of China Chinese Housing and National Sub-Industry Standard
Tungsten-tungsten alloy screw
Tungsten-tungsten alloy Rod
Main content and scope of application
8J/R105362-94
1.1 This standard specifies the technical requirements, test methods, acceptance rules, labeling, packaging, storage and transportation of alloy rods. 1.2 This standard is applicable to alloy rods made by powder metallurgy for vacuum relays, electric devices, replacement electrodes, etc. (hereinafter referred to as products).
2 Reference standards
GB3312
Determination of chemical content in tungsten - Chemical analysis method
S./T10536.1 Tungsten wire
3 Product classification
3.1 Product naming
3.1 Specifications in accordance with SJ/10536.1
3. 2.3.2.1 The brand, type and specification of the product shall include the requirements of Table 1, such as the manufacture of induction tubes, transmitting sections, welding electrodes, etc., the manufacture of electronic components, the modification of induction light sources, the connection model of high resistance electrodes, etc. 3.2.2 Types and specifications
The types and specifications of the products shall comply with the requirements of the following table:
1594-08-0 approved by the Ministry of Electronic Industry of the People's Republic of China
1994-12-01 implementation
Straightening and drawing technical requirements
Chemical composition
SJ/r10536.2-94
The chemical composition of the products of the large straightening stage shall be determined in accordance with Table 3. 3 Www.bzxZ.net
4.2 Size
The material shall not exceed
or the chemical content
0. T6~ 0. 9s
1. 00--1. 45
1. F0--:.99
4.) 1 The straightness of the product and the allowable difference shall be in accordance with the table 4
The impurity content is not less than
47? The length of the product shall comply with the provisions of 5.
0. 6r4-xt.3
-. 5ts3.U
The minimum diameter
Each impurity element
Total quantity of the optical rod
± u, 4.2.3 Fixed-length products are allowed to be supplied in reduced lengths, and a margin of 2~5μ should be left. 4.3 Forming performance
For products with a diameter of less than 1.5μm, they should be heated at 70m~850℃ and bent 8
90 degrees. If the bending is not deformed, the product is made of rough material. 4.4 Standard number
SJ/T1 0536.2.94
4.4.1 The surface quality of the product shall be as specified in Table 6, the surface quality shall be genuine, free of cracks, roughness, slight marks of roughness and oxide film, free of cracks, burrs, slight straightening, true speed screw thread, no contamination, surface roughness shall be 4.4.2 The product shall be broken but not loose or sharp, and each section shall be neat, smooth and free of burrs. 4. Straightness
The straightness of the product should not be greater than 1/1 of its length. 4.6 Product supply state
The color is black and the color is metallic luster
The diameter is 3nm. The product supply state must be annealed (M) and drawn (limited). 1.7 Endurance requirements
For products with maintenance requirements, the two parties may cooperate to analyze the chemical composition according to GB 3312 F and B 432. 5.2 The allowable diameter error is measured with a micrometer. 5.3 According to the requirements of 4.2.2, the length of the test is measured by the technical scale: 5.4 The basis of the potential 4.5 The semi-cleaned parts are tested by the supplier and the demander. 5.6 According to the requirements of 4.5, the length of the test is measured on the flat plate. 6 Inspection specifications
6-1 General inspection classification
This standard is stable, centering inspection, delivery inspection, 6.2 Final inspection
When the production is suspended for a long time, or the product performance is greatly improved, the final inspection should be carried out. 6.2.1 Qualification inspection items should be carried out according to the requirements of 4 items. 6.2.2 When the finalized product fails to meet the inspection requirements, the original process should be adjusted to reduce the inspection until the product is qualified. 6.3 Delivery inspection
E.3.1 The supplier shall conduct daily inspection according to the quality standard to ensure that the product meets the requirements of this standard and fill in the labor certificate.
6.3.? From the receipt of the product, the supplier shall conduct inspection for the sample for two months. If the inspection result does not meet the requirements of this standard, both parties can jointly inspect the sample and the sample shall be deemed unqualified: 6.3.3 Standard single batch
SJ/T10536.2-94
The inspection batch must be a group of products with the same composition, process, brand, type and specification. E.3.4 Other points and judgment criteria are shown in the judgment criteria!
6.3.4.1 Chemical analysis: For each inspection batch or production batch of products, a single sample shall be randomly selected for analysis. If it fails, double sampling shall be conducted. If it fails, the batch shall be deemed as not containing qualified products. 6.3.4.2 For the size, surface quality and straightness of the alloy rods, 100% inspection shall be conducted according to this standard. If it fails, the product shall be deemed as not containing qualified products. For the formability inspection of the rods, 10% samples shall be randomly selected from the inspection batch for inspection. If one sample fails, the next sample shall be inspected. If If there are still unacceptable products, the inspection batch is unqualified. 7 Marking, packaging, storage and handling
7.1 Labeling
Each material should be accompanied by a label or a quality certificate, and marked with: Q
Material name. Brand and type:
Production certificate number;
Specification (point diameter: self-weight and fixed length):
Production date;
Seal of the inspection department:
Who compiled this label, the first production parallel name.
All the materials of the rods should be of the same warehouse number, batch number and specification. They should be tied with rope or wire at 24 places and then wrapped with anti-sealing paper or single-material cloth tape. They should be placed in boxes or cartons with anti-sealing pads. 7.3 Transportation and storage
7.3.1 The packaged products should be transported in original boxes or effect boxes. The outside of the boxes should have "anti-humidity" and other precautions. The products can be transported in any way. During transportation, they should be protected from acid, rain and water. 7.3.2 The products should be stored in a warehouse with a relative humidity of no more than 65% and an acid-free and degradable atmosphere. Additional remarks
This standard was issued by the Donggang Chemical Research Institute of the Ministry of Electronics Industry and Shandong Animal Molybdenum Material Factory. The Ministry of Standardization was responsible for drafting the standard. The semi-initial persons: Shang Chenglu, Han Yanfen, — 10 -
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