This standard applies to lead glass for capacitors. SJ 20029-1992 Specification for glass for glass dielectric trimmer capacitors SJ20029-1992 Standard download decompression password: www.bzxz.net

Military Standard of the Electronic Industry of the People's Republic of China SJ20029--92
Specification for glass for glassdielectric trimmer capacitors1992-02-01 Issued
1992-05-01 Implementation
The Ministry of Machinery and Electronics Industry of the People's Republic of China issued the Military Standard of the Electronic Industry of the People's Republic of China Specification for glass for glassdielectric trimmer capacitors1 Scope
1.1 Subject Content
SJ20029-92
This specification specifies the chemical composition and physical and chemical properties of tubular glass for glass dielectric trimmer capacitors (hereinafter referred to as capacitor glass) and its test methods.
1.2 Applicable Scope
This specification is applicable to lead glass for capacitors. 2 References
GB190—83 Dangerous Goods Packaging Marks
GB191—83 Packaging Storage and Transportation Indicators
GB358—86 Terminology of Glass for Electronic Technology GB6359--86 Nomenclature of Glass for Electronic Technology GB9000.188 General Principles for Chemical Analysis of Electroglass GB9000.2—88 Analysis of Silicon Dioxide in Electroglass GB9000.5-88 Analysis of Lead Oxide in Electroglass (Extraction Separation-EDTA Complexometric Titration) GB9000.7-88 Analysis of Lead Oxide in Electroglass (FFTA Complexometric Titration) GB9000.9—88 Flame Photometric Determination of Potassium Oxide, Sodium Oxide and Lithium Oxide in Electroglass GB9000.14-88 Atomic Absorption Analysis of Iron Oxide and Titanium Dioxide in Electroglass GB9622.1—88 Test Method for Density of Electroglass-Floatation Method GB96 22.2--88 Test method for average linear thermal expansion coefficient of electronic glass GB9622.3--88 Test method for thermal stability of electronic glass GB9622.4--88 Test method for softening temperature of electronic glass GB9622.5--88 Test method for annealing point and strain point of electronic glass GB9622.8--88 Test method for temperature (Tk-100) when volume resistivity of electronic glass is 100MQ-cm
GB9622.9-88 Test method for high frequency dielectric loss and dielectric constant of electronic glass GB9622.11-88 Test method for chemical stability of electronic glass against water GJB179-86 Procedure and table for sampling inspection by count issued by the Ministry of Machinery and Electronics Industry of the People's Republic of China on February 1, 1992 and implemented on May 1, 1992
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3 Requirements
SJ20029:92 ||tt| |3.1 The terminology of capacitor glass shall comply with GB6358.3.2 The brand name of container glass shall comply with (B6359.3.3 The external dimensions of container glass shall comply with the agreed or joint pressure regulations. 3.4 The appearance of container glass shall not have defects such as air lines, pits and scratches. The specific provisions shall be agreed upon by the supply and demand parties:
3.5 The chemical composition of container glass shall comply with the provisions of Table 1 Table 1
Lead glass Chemical composition, % 3.6 The physical and chemical properties of capacitor glass shall comply with the requirements of Table 2. Table 2 Thermal expansion coefficient of glass (DB404) (DB404) (DB404) (91.0±2.0)×104 |tt||Dielectric loss tangent
tgox10+
Quality assurance regulations
4.1 Inspection and verification
Softening temperature
615±10
Dielectric constant
Thermal stability
Volume resistivity
TK-100\C
Annealing upper limit
450±10
3.055±0.0 30
Retreat
360±10)
Classification of water resistance and chemical stability
Except as specified in the contract or order, the contractor shall be responsible for completing all inspections specified in this specification. If necessary, the superior appraisal agency of the ordering party has the right to inspect any inspection item described in the specification. 4.1.1 Responsibility for conformity
All products must meet the requirements of Chapter 3 and Chapter 5 of this specification. The inspections specified in this specification shall become an integral part of the contractor's entire inspection system or quality management program. If the contract includes inspection requirements not specified in this specification, the contractor shall also ensure that the products submitted for acceptance meet the requirements. Quality conformity sampling does not allow the submission of products that are known to be defective, nor can it require the ordering line to accept defective products. 4.2 Inspection classification
The inspections specified in this specification are divided into:
a. Appraisal inspection;
b. Quality-conformity inspection.
4.3 Identification test
SJ 2002992
This test includes the provisions of 3.3, 3.4, 3.5 and 3.6. The identification test shall be carried out in the test case approved by the state. The test requirements and test methods shall be in accordance with the provisions of Table 3. Table 3
Test items
Overall dimensions
Appearance volume
Flow rate
Linear thermal expansion coefficient
Softening temperaturewww.bzxz.net
Thermal stability
Ignition upper limit
Annealing lower limit
Dielectric loss ratio
Dielectric constant
Volume Resistivity Tk100
Water resistance chemical stability level
4.3.1 Preparation and quantity of samples to be tested
Required specification number
Test method or service number
In each melting batch of glass, appropriate glass is randomly selected from the furnace products to prepare the samples to be tested. The preparation and quantity of the samples shall be carried out in accordance with the sample shape, size and method requirements specified in the relevant test method standards as the samples for risk inspection.
4.3.2 Judgment criteria
If all the samples meet the requirements of this specification, the batch of glass is qualified. If not, make a double number of samples from the same batch of glass and retest the unqualified items in the first batch. If the retest still fails, the batch of glass is considered unqualified.
4.4 Quality conformity inspection
The inspection items, inspection requirements and inspection methods of this inspection shall be in accordance with the provisions of Article 4.
Inspection items
Dimensions
Appearance quality
Dielectric standard Tangent value of products
Dielectric constant.
4.5 Inspection batch
Required section number
Chapter number of inspection or test method
An inspection batch shall be made of the same raw materials, the same manufacturing process, company specifications, and the products submitted in batches.
4.6 Sampling plan
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SJ20029-92
The sampling plan shall be in accordance with GJB179. The qualified quality level (AQL) of the one-time sampling plan is 1.5, and the inspection level () is I
4.7 Unqualified
If the sample fails to pass the daily inspection of the item in the quality consistency inspection table, the acceptance and delivery of the product shall be stopped, and the contractor shall notify the qualified appraisal unit of the unqualified situation. After taking corrective measures, all tests or inspections shall be carried out again according to the opinions of the qualified appraisal unit, or only the unqualified items shall be tested or inspected. If the test is still unqualified, the unqualified situation shall be notified to the qualified appraisal unit. 4.8 Inspection method
4.8.1 The external dimensions of the glass shall be measured by any measuring tool with an accuracy of not less than 1%. 4.8.2 The appearance quality of the glass shall be determined by visual method or in accordance with the contract provisions. 4.8.3 Analysis method of chemical composition
4.8.3.1 The analysis of silicon dioxide in glass shall be carried out in accordance with GB9000.2. 4.8.3.2 The analysis of aluminum dioxide in glass shall be carried out in accordance with GB9000.7. 4.8.3.3 Analysis of lead oxide in glass shall be carried out in accordance with GB9000.5. 4.8.3.4 Analysis of sodium oxide and potassium oxide in glass shall be carried out in accordance with GB9000.9. 4.8.3.5 Analysis of ferric oxide in glass shall be carried out in accordance with GB9000.14. 4.8.4 Test methods for physical and chemical properties
4. 8. 4. 1 The linear thermal expansion coefficient of glass shall be carried out in accordance with GB 9622.2. 4. 8.4.2 The softening temperature of glass shall be in accordance with GB 9622.4. 4.8.4.3 The thermal stability of glass shall be in accordance with GB 9622.3. 4.8.4.4 The upper limit of annealing of glass shall be in accordance with GB 9622.5. 4.8.4.5 The lower limit of annealing of glass shall be in accordance with GB 9622.5. 4.8.4.6 The dielectric loss tangent value tg of glass shall be in accordance with GB 9622.9. 4.8.4.7 The dielectric constant of glass shall be in accordance with GB 9622.9. 4.8.4.8 The volume resistivity TK-100 of glass shall be in accordance with GB 9622.8. 4.8.4.9 The density of glass shall be in accordance with GB 9622.1. 4.8.4.10 Chemical stability of glass corrosion resistance in accordance with GB9622.11.5 Delivery preparation
5.1 Sealing and packaging
After the capacitor glass is packaged with moisture-proof paper, it is packed into wooden boxes according to product specifications and contract requirements, and then filled with soft fillers for transportation.
5.2 Transportation and storage
Capacitor glass should be protected from mechanical damage during transportation and should be stored in a dry warehouse without corrosive gas. 5.3 Marking
The marking of capacitor glass should comply with the relevant provisions of GB 191. 6 Explanation
6.1 Intended use
The glass specified in this specification is intended for sub-glass dielectric fine-tuning capacitors. -4 -
Contents of order documents
The following contents should be stated in the contract or order:a
Name and number of this standard:
Product name and specifications:
Quantity:
Other requirements,
Additional instructions:
SJ20029-92
This standard is proposed by the Electronic Standardization Research Institute of the Ministry of Mechanical and Electrical Engineering. This standard is proposed by the Electronic Standardization Research Institute of the Ministry of Mechanical and Electrical Engineering. This standard is proposed by the Electronic Standardization Research Institute of the Ministry of Mechanical and Electrical Engineering. The main drafter of this standard: Liu Chengjun
Project code: BO05004.
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