SJ/T 10168.2-1991 Stamping molybdenum discs for metal special-shaped products for vacuum switch tubes SJ/T10168.2-1991 Standard download decompression password: www.bzxz.net

Electronic Industry Standard of the People's Republic of China SJ/T 10168.1~70168.5-91
Metal Shaped Products for Vacuum Switch Tubes
Published on April 2, 1991
Implemented on July 1, 1991
Published by the Ministry of Machinery and Electronics Industry of the People's Republic of China Electronic Industry Standard of the People's Republic of China Punching Molybdenum Discs
Me-dves by puaching
Main Contents and Scope of Application
1.1 Content
N/r10168.2-91
This standard specifies the requirements for punching assembly, test methods, test procedures, marking packaging, transportation and storage. 1.2 Application Scope
This standard applies to punching phase discs of high-power silicon-controlled tubes, vacuum switch tubes, etc. 2
Reference
GB 4325.1
GB142S
3 Technical requirements
Metal and alloy plates
Chemical analysis methods
Shape and shape test
Metal deformation test method
Gold iodine test method
Precious metals and their alloys contact test method
The production specifications and surface shape of the brand shall comply with the requirements of Table 1. 3.1
14·-70
11 - 70
Approved by the Ministry of Machinery and Electronics Industry of the People's Republic of China in 19910126
D. %~E. 0
1.a--G. C
5. 4.- 6. 6
0. 8--6. 0
Assembler Sha Yi
Not processed
Single item single period
Single action spray
Double blood spray
1991-7-U1 Implementation
SJ/1C168.2—91
3.? The overall dimensions and allowable deviation, line and section tolerance should comply with the requirements of Table 2. Table 2
7. 0 -13. 0
7. 0-- 13. 0
>13--70
Market diameter nine-point selection
.t. 12
J. 8~1. 5
1. 5~-3. 0
1.6. ~6. 0
Original allowable filter
Double-sided parallel compensation difference
Double-sided plane compensation difference
≤;0. 015
Note. For diameters greater than 1 yuan~70mm, the half line and the side or side are only applicable to the impulse matching of double-sided belt grinding. 3.3 Chemical composition The chemical composition of the lead film should meet the requirements of 2.1.1 in GB387. 3.4 Surface quality 3.4.1 The surface of the molybdenum film should not have double lines, cracks, peeling, delamination, burrs and other defects. 3.4.2 The surface of the round piece of sandblasting should be even and smooth, without spots, pits, oxidation and other defects. 3.4.5 The surface roughness of the polished surface should be a.25--2.5mm and the surface roughness should be 0.63--1.25mm. 3.4.4 The edge of the film should be round and smooth. The material is .51m.3.5 When the punched molybdenum disc is subjected to the bending test, the specimen shall be bent to 0*-100°, the surface of the specimen shall be intact, and the bending line and the edge shall have a smooth layer (the bending radius is 21°). 3.E The hardness of the punched pin disc measurement surface shall be HV340 ± 20. 3.7 The density of the punched pin disc shall not be less than 101m. 4 Test method 4.1 According to the requirements of 3.3, the surface quality of the punched molybdenum disc shall be checked by naked eyes, and it can also be checked by the surface after corrosion according to the needs and requirements of the corrosive liquid.
Juice: Corrosion reduction (each ratio inspection must be closed and re-prepared with hydrogen peroxide 250:11 containing chemical sales $~10, hot weft type: school pad glue 225m1, 65% stock r5:,
Avoid single time min.
4.3 Root saw 3.4.3 requirements, punching lead round piece table reward assembly seat, use the surface frame to compare the same speed to compare the pick-up test 4.4 low increase 3.5 requirements, the middle clamp mesh integrity test 4.5 According to (t233 for the production of agricultural products and Nanhuixin for the production of agricultural products according to G1. 4.5 punching of the sheet thickness with an accuracy of 0.0mm within a thousandth of the measurement, the diameter of the pin with a vernier caliper of 0.02mm 4.7
According to 3.5 requirements, "Xie Yuan production craftsman according to G3312. 1. Root diarrhea 3. Recording requirements, the net sheet density measurement disk according to H·13. 5 inspection rules
SJ/T 10168.2.91
5.1 The product shall be inspected by the supplier's quality inspection department to ensure that the product quality meets the requirements of this standard and fill in the relevant quality certificate.
5.2 The purchaser shall accept the product according to this standard within three months from the date of receipt of the product. If the old inspection results are inconsistent with the provisions of this standard, they shall be negotiated and resolved.
5.3 The same brand, same batch number, same material specifications and same surface morphology shall be submitted for acceptance. .4 Chemical composition of punched identification sheets + allow the supplier to report the chemical composition analysis results of the original powder, sheet or ingot. 5.5 The needle shape, size and surface quality of the punched molybdenum sheet in 3.1.1, 3.4.2 should be 100% inspected. 5.6 The double-broken parallelism deviation and double-matching flatness deviation in 3.4.3 of the cable surface insertion quantity are changed to 3.2 Table 2, and the double-broken parallelism deviation is taken from each submitted batch for inspection!
5.7 Bending performance inspection, with the requirements of the cat party, 5.8 Test the strength and density of punched steel sheets. 3.5-5 pieces are tested for each batch. 5.9 Test the strength and bending properties of punched steel sheets. If any unqualified samples are found during the test, take samples for re-test. If there are still unqualified samples, the batch is judged as unqualified. , the film will not be re-tested, and the qualified will be handed over to the doctor. 8 Labeling, packaging, transportation, storage
Each product should be attached with a label or sign, which indicates: the name of the manufacturer;
product number, specification, surface shape;
product index.
5.2 Packaging and transportation
The punched and read films of the same specifications should be packed in small plastic bags, and then placed in a dry paper box, and then packed in a box. 3. 2.
The paper box should be neatly arranged in the box. The inner seal should be moisture-proof, and soft objects should be sealed tightly to prevent movement. The outer seal should be marked with words such as "brain moisture", "light" or "cup": each piece should not exceed 30 kg B.2.2 During transportation or storage, it is necessary to prevent contact and corrosion by traceable chemical reagents. 6.3 Quality certificate 5
Each batch of products shall be accompanied by a quality certificate, which shall indicate: supplier's payment
product name!www.bzxz.net
Product brand, specification and specification
batch weight;
item classification and inspection
packaging date:
Additional instructions:
S4/T10168.2—91
This standard was drafted by seven countries based on the Japanese standard by the Ministry of Electronics Industry's Electronics Standardization Research Institute.
The main initiators of this standard are: Yin Zongwu,
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