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 KAOKAca- 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 Classification The inspection specified in this specification is divided into: HTTKAONKAca- 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; TTKAONKAca- 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 TTKAONKAa- Additional notes: SJ 20670 — 1998 Test gas Constant pressure on getterwwW.bzxz.Net 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. Tip: This standard content only shows part of the intercepted content of the complete standard. If you need the complete standard, please go to the top to download the complete standard document for free.