SJ 3233-1989 Vacuum electron device electron gun bracket glass rod SJ3233-1989 standard download decompression password: www.bzxz.net

Ministry of Machinery and Electronics Industry of the People's Republic of China Standard SJ3233-89
Vacuum electron device electron gun support glass rod
1989-03-20 Issued
1989-03-25 Implementation
Approved by the Ministry of Machinery and Electronics Industry of the People's Republic of China
Ministry of Machinery and Electronics Industry of the People's Republic of China Standard Vacuum electron device electron gun support glass rod
1 Subject content and scope of application
1.1 Subject content
SJ3233-89
This standard specifies The specifications, technical requirements, test methods and inspection rules of the bracket glass rod are determined. 1.2 Scope of application
This standard applies to the bracket glass rod of the electron gun of vacuum electronic devices 2
Reference standards
GB9000.2 Analysis of silicon dioxide in electronic glass GB9000.3 Analysis of boron trioxide in electronic glass GB9000.10 Atomic absorption analysis of lithium oxide, sodium oxide and potassium oxide in electronic glass GB9622.2 Test method for average linear thermal expansion coefficient of electronic glass GB9622.4 Test method for softening point of electronic glass G B9622.5 Test method for annealing point and strain point of electronic glass GB9622.8 Test method for temperature Tk100 when volume resistivity of electronic glass is 100M2·Cm GB9622.10
Test method for DC breakdown strength of electronic glass GB96222.1
Test method for density of electronic glass
SJ2415DT841 Main technical data of electric vacuum glass GB2828 Batch inspection counting sampling procedure and sampling table (applicable to inspection of continuous batches) 3 Varieties and specifications
Quality of bracket glass rod Types, specifications and deviations shall conform to the provisions of Table 1 and Figures 1, 2, 3, 4 and 5.
Approved by the Ministry of Machinery and Electronics Industry of the People's Republic of China on March 20, 1989
Implementation on March 25, 1989
Length (L)
Nominal size
Width (B)
Nominal size
SJ3233-89
Height (h)
.Nominal size
Note: Dimensions and deviations other than those in Table 1 may be determined by negotiation between the supplier and the buyer. 4 Technical requirements
Radius R
Main purpose
Color picture tube
Black and white picture tube
4.1 The support glass rod shall be made of SJ2415 glass: the content of impurity sodium oxide shall not be greater than 0.05%. 4.2 The support glass rod shall be yellow, green, white or other colors, and the color shall be uniform. 4.3 The support glass rod shall not have cracks visible to the naked eye and bumps or burrs that are easy to knock off. 4.4 The support glass rod shall not have continuous and dense bubbles less than 0.2mm. Bubbles with a diameter of 0.2~0.3mm. No more than 3: Bubbles with a diameter greater than 0.3mm are not allowed to exist. 4.5 The support glass rod with a single weight less than 2.5g shall not have mechanical damage visible to the naked eye: The support glass rod with a single weight equal to or greater than 2.5g. No bumps greater than 0.4mm are allowed. There shall be no more than 3 0.3~0.4mm bumps. 4.6 The support glass rod shall not have rounding defects larger than 0.5mm. There shall be no more than 3 rounding defects smaller than or equal to 0.5mm. Its depth shall not be greater than 0.2mm. 4.7 The support glass rod shall not have more than three defects in 4.5 and 4.6 at the same time. 4.8 The support glass rod shall not have impurity marks with a diameter larger than 0.3mm, and shall not have continuous and dense impurity marks with a diameter smaller than 0.2mm.
4.9 The curvature of the support glass rod shall not be greater than 0.8% of its length. 4.10 The physical properties of the support glass rod shall comply with the provisions of Table 2. 2
Name
Average linear expansion coefficient in the range of 0~300℃ α Softening point (temperature when viscosity is equivalent to 107.6p) Annealing point (temperature when viscosity is equivalent to 1013p) Strain point (temperature when viscosity is equivalent to 10145p) Volume resistivity (Logp) 150c
Dielectric strength
SJ3233-89
4.11 The glass rod of the black and white electron gun bracket should be able to withstand the following rapid cooling and heating Performance test: refers to
(28.0±2.0)×10-7
820±10
510±10
460±10
2.15±0.05
Sampling three times from each batch of slope rods, 10 each time, the three samples are heated to 1000℃ in the heating device for 5 minutes, and then immediately put into 25±5℃ water, the number of broken samples each time shall not exceed 1/5. Sampling 50 pieces from each batch in the same heating device, heating to 1000℃, and keeping warm for 5 minutes. Take out and cool naturally to room temperature. The number of bubbles in each 50 slope rods shall not exceed 4. 4.12 The practicality test and qualified product rate of the bracket glass rod shall be agreed upon by the supply and demand parties. 5 Test methods
5.1 The color, breakage, cracks, protrusions and burrs of the support glass rod shall be inspected by naked eyes. 5.2 The size and deviation of the support glass rod shall be measured by vernier caliper or micrometer, plug gauge and plate. 5.3 The analysis of silicon dioxide shall be carried out in accordance with GB9000.2. 5.4 The analysis of boron trioxide shall be carried out in accordance with GB9000.3. 5.5
The analysis of potassium oxide shall be carried out in accordance with GB9000.10. 5.6 The determination of the average linear expansion coefficient α shall be carried out in accordance with GB9622.2. The determination of the softening point shall be carried out in accordance with GB9622.4. 5.7
The determination of the annealing point shall be carried out in accordance with GB9622.5. 5.8
The strain point is determined according to GB9622.5. 5.10
The volume resistivity (Logp) is determined according to GB9622.8. 5.11
The compressive strength is determined according to GB9622.10. The density is determined according to GB9622.1.
6 Inspection rules
6.1 The bracket glass rod shall be inspected by the supplier's quality inspection department. After passing the inspection, fill in the quality certificate. 6.2 The buyer shall conduct a re-inspection within three months from the date of receipt of the product. If the quality does not conform to this standard, it may be proposed to the supplier, and the supplier and buyer shall conduct a re-inspection in accordance with this standard. 6.3 The bracket glass rod shall be sampled according to GB2828. 3
SJ3233--89
The size and appearance of the bracket glass rod The qualified quality level (AQL) and inspection level shall be in accordance with Table 3. Table 3
Inspection items
Dimensions (length, width, height)|| tt||Appearance:
Breakage, cracks, falling offwwW.bzxz.Net
Impurities, spots, gaps
7 Marking, packaging, transportation and storage
Qualified quality level (AQL)
7.1 The number of each batch of bracket glass rods shall not be less than 100,000. Small batches of bracket glass rods can be supplied after negotiation between the supply and demand parties.
7.2 The bracket glass rods should be packed in plastic bags and then placed in packaging containers lined with protective objects. Each plastic bag is about 4,000 pieces or 3kg. Each bag should be accompanied by a certificate of conformity. 7.3 The total weight of each packaging container shall not exceed 50kg, and a product certificate of conformity shall be attached. It should indicate: a. Product name;
b. Batch number;
e. Specifications (length, width, height);
d. Quantity;
Manufacturer name;
Date of production.
7.4 Each packaging container should have the seal of the product quality inspection department, and the container should indicate: a. Product name;
b. Batch number;
Specifications (length, width, height);
d. Quantity:
e. Manufacturer's name;
f. Production date;
Moisture-proof and anti-fouling signs.
7.5 During transportation, the support glass rods should be protected from moisture, dew, corrosion and mechanical damage. 7.6 The support glass rods should be stored in a clear and dry environment. Additional instructions:
This standard is under the jurisdiction of the Electronic Standardization Institute of the Ministry of Machinery and Electronics Industry. This standard was drafted by the Sino-foreign joint venture Xianglong Electronics Co., Ltd. and the Electronic Standardization Institute of the Ministry of Machinery and Electronics Industry.
The main drafters of this standard are: Shu Dingtao, Liu Chenggoujun, Ou Quanfu,
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.