Technical data of Type DB-473 electronic glass

SJ/T 10588.20-1994 Technical data of DB-473 electronic glass SJ/T10588.20-1994 Standard download decompression password: www.bzxz.net

Electronic Industry Standard of the People's Republic of China
Technical data of type DB-473 electronic glass
Technical data of type DB-473 electronic glass Subject content and scope of application
This standard specifies the chemical composition and physical and chemical performance indicators of DB-473 electronic glass. This standard is applicable to glass materials used in color picture tube glass screens, etc. 2 Reference standards
GB9000
GB9622
Standard method for chemical analysis of electronic glass
Test method for physical and chemical properties of electronic glass
GB9474.1～.3 Test method for physical properties of color picture tube glass GB9474.4
GB/T14012
Technical requirements
Analysis of oxidation in color picture tube glass
General specification for glass shell of black and white picture tube
Chemical composition is shown in Table 1.
Chemical composition
Weight percentage
60.30±1.00
2.00±0.10
0.25±0.02
1.10±0.04
8.20±0.10
8.85±0.10
7.80±0.10
2.80±0.10
0.45±0.05
Approved by the Ministry of Electronics Industry of the People's Republic of China on August 8, 1994 SJ/T10588.20—94
Test method
GB9000.11
GB9000.10
GB9000.15
GB9000.14
Implementation of 1994-12-01
Chemical composition
SJ/T10588.20-94
Weight percentage
0.35±0.05
0.35±0.05
≤0.071)
Note: 1) Fe, O, as impurity control, are not included in the percentage composition. 3.2 Physical and chemical performance indicators are shown in Table 2
Indicator name
Average linear thermal expansion coefficient in the range of 0~300℃Density
Softening point
Annealing point
Strain point
Dielectric loss tangent value tg8x100 at frequency 6MHz and temperature 20℃
Volume resistivity Igp at 350℃
Light transmittance (t) (%)
Chromaticity coordinates
X-ray absorption coefficient (0.06nm, 20KeV)Water resistanceChemical stability level
Test method
GB9000.12
GB9000.14
(98.2±0.7)×10-7
2.785±0.015||tt ||706±3
520±5
477±5
In hexagonal standard coordinates
Test method
GB9622.82)wwW.bzxz.Net
GB/T14012
Article 4.5.4
GB9622.11
Note: 2) Articles 4.5 and 4.6 are combined and carried out as follows: The measurement starts from the starting point, and the temperature is kept at 300℃ for 10 minutes. The measurement begins. Continue to increase the furnace temperature, and measure once every 10℃ until the measurement ends at 390℃. 3)
Additional instructions:
This standard is under the jurisdiction of the Standardization Institute of the Ministry of Electronics Industry. 0.2855
This standard was drafted by the 773rd Factory and the Standardization Institute of the Ministry of Electronics Industry. The main drafters of this standard are Su Mei and Liu Chengjun. 2
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