This standard specifies the technical requirements, test methods, inspection rules and marking, packaging and storage of spark plug damping terminal caps (hereinafter referred to as terminal caps). This standard applies to terminal caps used to suppress radio interference generated by internal electromechanical ignition systems. This standard does not apply to terminal caps used for aviation and special engines. JB/T 6327-1992 Technical conditions for spark plug damping terminal caps JB/T6327-1992 Standard download decompression password: www.bzxz.net

Mechanical Industry Standard of the People's Republic of China
Standard for Glow Plugs and Spark Plugs
Issued by the Ministry of Machinery and Electronics Industry of the People's Republic of China
Mechanical Industry Standard of the People's Republic of China
Technical Conditions for Spark Plug Damping Terminal Caps
1 Subject Content and Scope of Application
JB/T6327-92
This standard specifies the technical requirements, test methods, inspection rules and marking, packaging and storage of spark plug damping terminal caps (hereinafter referred to as terminal caps).
This standard applies to terminal caps used to suppress radio interference generated by the electric ignition system of internal combustion engines. This standard does not apply to terminal caps for aviation and special engines. 2 Reference Standards
GB2828 Batch Inspection Count Sampling Procedure and Sampling Table 3 Technical Requirements
3.1 Terminal caps shall be manufactured according to the drawings approved by this standard and the prescribed procedures. 3.2 The surface of the terminal cap shall be flat and smooth (excluding the gate), and there shall be no metal particles, blistering, bump damage and obvious scratches. 3.3 The surface of metal parts should be clean, and cracks, defects, rust and defects that affect product quality are not allowed. Ferrous metal parts should be treated with rust prevention.
3.4 ​​Resistance value
When the room temperature is 23±5℃, the resistance value of the terminal cap should be 315kn. Other specifications of terminal caps shall be agreed upon by the supply and demand parties. 3.5 Connection strength
3.5.1 After the terminal screws of the terminal cap and the high-voltage wire are repeatedly screwed out and screwed in 10 times, the tensile load shall not be less than 68.8N. 3.5.2 The terminal nut of the terminal cap and the terminal nut of the spark plug or the spark plug terminal screw are repeatedly inserted and pulled out 25 times, and the tensile load shall not be less than 19.6N.
3.6 Insulation resistance
The insulation resistance of the terminal cap in the transformer oil at 100±5℃ for 1h shall not be less than 10Ma. 3.7 Power frequency withstand voltage
The wiring cap should be able to withstand a 50Hz sine wave, a voltage of 22kV, and a test lasting 1min without breakdown, damage, or abnormality. 3.8 Vibration resistance
The wiring cap should be able to withstand a vibration test with an amplitude of 22mm, a frequency of 6.6~6.7Hz, and a test lasting 5min. Its shell should not be cracked or damaged, and the fasteners should not be loose or fall off. The change in its resistance value should not exceed ±10% of the resistance value before the test. 3.9 Temperature and humidity characteristics
After the wiring cap is placed in an environment with a temperature of 40±2℃ and a relative humidity of 88%~92% for 96h, the change in its resistance value should not exceed ±15% of the resistance value before the test. bZxz.net
3.10 Temperature characteristics
When the temperature is 120±2℃, after 2h of insulation, the change in the resistance value of the wiring cap should not exceed ±25% of the resistance value before the test. After cooling for 24 hours, the change in resistance value shall not exceed ±10% of the resistance value before the test. 3.11 Durability
The durability requirements of the terminal block can be agreed upon by both the supplier and the buyer. Approved by the Ministry of Machinery and Electronics Industry on June 26, 1992, and implemented on January 1, 1993
4 Test method
4.1 Appearance inspection
JB/T6327-92
Perform visual inspection according to the provisions of Articles 3.2 and 3.3 of this standard. 4.2 Dimension inspection
Perform with a vernier caliper with a graduation value of 0.02mm and a special gauge according to Article 3.1 of this standard. 4.3 Resistance inspection
Perform with an instrument with an accuracy of not less than 1% according to Article 3.4 of this standard. 4.4 Connection strength inspection
According to the provisions of Article 3.5 of this standard, the measurement is carried out on a KL type dynamometer. 4.5 Insulation resistance test
According to the provisions of Article 3.6 of this standard, the bare copper wire is wound on the terminal cap using the method shown in the figure, and then immersed in transformer oil at 100±5℃ (the breakdown voltage of transformer oil should be not less than 35kV). After insulation for 1h, the insulation resistance value between the bare copper wire and the resistor body is measured with a 1000V megohmmeter.
- Bare copper wire (Q0.5)
4.6 Power frequency withstand voltage test
According to the provisions of Article 3.7 of this standard, the bare copper wire is wound on the terminal cap using the method shown in the figure, and then installed on a special test equipment, the voltage is increased to 22kV, and after holding for 1min, the voltage is evenly reduced to zero. Check with eyes. 4.7 Test of resistance to alarm
According to the provisions of Article 3.8 of this standard, after connecting the terminal cap to the spark plug with rubber sleeve, install it on the special test bench. After 5 minutes of testing, visually check the appearance, and then use the instrument with an accuracy of not less than 1% to measure the resistance value between the terminal screw and the joint nut. 4.8 Test of temperature and humidity characteristics
According to the provisions of Article 3.9 of this standard, place the test sample in a constant temperature and humidity chamber with a temperature of 40±2°C and a relative humidity of 88%-92%. After 96 hours of storage, take the sample out of the chamber and cool it at room temperature for 15 minutes. Then use the instrument with an accuracy of not less than 1% to measure the resistance value between the terminal screw and the joint nut, and visually check its appearance. 4.9 Test of temperature characteristics
4.9.1According to the provisions of Article 3.10 of this standard, place the test sample in an oven at 120±2°C for 2 hours. Within 1 minute, use the instrument with an accuracy of not less than 1% to measure the resistance value between the terminal screw and the joint nut. 4.9.2 Take the sample out of the test box, cool it for 24 hours, and measure the resistance value between the terminal screw and the joint nut with an instrument with an accuracy of not less than 1%.
Durability test
According to Article 3.11 of this standard. Carry out according to the test method agreed by the supply and demand. 5 Inspection rules
5.1 The terminal cap shall be inspected by the inspection department of the manufacturer, and shall be shipped after passing the inspection, and shall be accompanied by a product quality certificate. 13
JB/T6327—92
5.2 The inspection of the terminal cap is divided into factory inspection and type inspection. 5.2.1 Factory inspection
Factory inspection is divided into one-by-one inspection and sampling inspection. 5.2.1.1 One-by-one inspection
The wiring width shall be inspected one by one according to the items specified in Table 1. If it is found that the product does not meet any of the requirements in Table 1, the terminal cap is unqualified.
5. 2. 1. 2
Sampling inspection
Sampling inspection should be carried out by randomly selecting samples from qualified products according to GB2828 and Table 2 for testing. Terminal caps should be inspected in batches, and each batch should be terminal caps of the same model manufactured by the same process. Table 1 Terminal cap inspection items
Appearance inspection
Dimension inspection
Resistance inspection
Test items
Appearance inspection
Test basis
Articles
3.2, 3.3 of this standard
Dimension inspection
Resistance inspection
Connection strength test
Insulation resistance test|| tt||Working pressure withstand test
Shock test
Article 3.1 of this standard
Article 3.4 of this standard
Article 3.5 of this standard
Article 3.6 of this standard
Article 3.7 of this standard
Article 3.8 of this standard
Test basis
Articles 3.2 and 3.3 of this standard
Article Article 3.1
Article 3.4 of this standard
Items for sampling inspection of wiring caps
N≤3200
Test method
Article 4.1 of this standard
Article 4.2 of this standard
Article 4.3 of this standard
N=320110000N=10001～35000
Test method
Article 4.1 of this standard
Article 4.2 of this standard
Article 4.3 of this standard
Article 4.4 of this standard
Article 4.5 of this standard
Article 4.6 of this standard
Article 4.7 of this standard
According to the GB2828 counting secondary normal inspection sampling plan, the inspection level is S-3, and the qualified quality level (AQL) is 2.5. At that time, the qualified judgment number is (0, 1), and the unqualified judgment number is (2, 2); when the sample size is 13, the qualified judgment number is (0, 1), and the unqualified judgment number is (2, 2). 14
JB/T632792
If only the appearance and size are unqualified after the secondary sampling, the wiring width of this batch is allowed to be inspected one by one. 5.2.3 Type inspection
When a new product is finalized or the structure of a product in normal production is modified, or the raw material formula and key process methods are changed, all tests must be carried out according to the items and sequence specified in Table 3. During the test, if one of the wiring caps fails a test, the type inspection is considered unqualified. For normal production products, type inspection should be carried out at least once every 3 years. Table 3 Type inspection items for wiring caps
Test items
Appearance inspection
Dimension inspection
Resistance inspection
Connection strength test
Insulation resistance test
Power frequency withstand voltage test
Vibration resistance test
Temperature and humidity characteristic test
Temperature characteristic test
Durability
Test basis
Section 3 of this standard. 2,3.3
Article 3.1 of this standard
Article 3.4 of this standard
Article 3.5 of this standard
Article 3.6 of this standard
Article 3.7 of this standard
Article 3.8 of this standard
Article 3.9 of this standard
Article 3.10 of this standard
Article 3.11 of this standard
Note: Type inspection should be carried out after remote inspection. 6
Marking, packaging and storage
The manufacturer's name or trademark should be marked on each terminal cap. The packaging box should be marked with:
Product name;
Product model and quantity;
Manufacturer's name and trademark;
Total quantity;
"Handle with care" and "Moisture-proof" signs.
The following documents should be accompanied with the product:
Product quality certificate;
Total number of samples: 12 pieces
Number of tests (pieces)
As needed
Product use and maintenance instructions.
For products exported or with special requirements, their marking and packaging can be carried out according to the agreement between the supply and demand parties. Test method
Article 4.1 of this standard
Article 4.2 of this standard
Article 4.3 of this standard
Article 4.: of this standard
Article 4.5 of this standard
Article 4.6 of this standard
Article 4.7 of this standard
Article 4.8 of this standard
Article 4.9 of this standard
Article 4.10 of this standard
6.5 Under normal transportation and storage conditions, the product shall meet the requirements of Article 3 of the standard within one year from the date of leaving the factory. Additional remarks:
This standard was proposed and managed by Nanjing Spark Plug Research Institute of the Ministry of Machinery and Electronics Industry. This standard was drafted by Nanjing Electric Porcelain General Factory and Nanjing Spark Plug Research Institute. Nanjing Electric Appliance Branch participated in the drafting. The main drafters of this standard are Bu Yongnian, Xia Pinghan, Guo Zheng, Yang Saijue, and Gao Fenggang. This standard adopts JISD5111 "External resistor for preventing automobile noise". 15
Mechanical Industry Standard of the People's Republic of China
Electric glow plug, spark plug standard
Edited and published by the Standardization Research Office of the First Equipment Department of the Mechanical and Electronic Industry Ministry of Machinery and Electronics Industry and the Mechanical Standardization Research Institute of the Ministry of Machinery and Electronics Industry
(No. 302, Xiashesi Street, Xiangtan City, Hunan Province)
Printed by Xiangtan Electric Motor Factory Printing Plant
Book size 880×1230
First edition in May 1993
Printing sheet 1 Number of words 36000
First printing in May 1993
Printing number
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