GB 2844-1981 Test method for water pressure resistance of flat tempered glass for ship windows GB2844-1981 standard download decompression password: www.bzxz.net

LDC 629.12:666.181:620.162.4 National Standard of the People's Republic of China
GB2844—81
Hydraulic test method for tempered flat glass used in window of ship1981-12-26Promulgated
General Administration of Standards
1982-07-01Implementation
W. National Standard of the People's Republic of China
Hydraulic test method for tempered flat glass used in window of shipUDC629.12
: 620.162.4
CB 2844 -- 81
This method is applicable to the inspection of flat tempered glass for ship windows with a pressure resistance requirement of less than 6 kg/cubic meter*. tSpecimen
1.1 Types of specimens and basic dimensions,
a. The shape and tolerance requirements of round tempered glass are shown in Figures 1 and 1.
Nominal dimensions
Allowable deviation
b. The shape and tolerance requirements of rectangular tempered glass are shown in Figure 2 and Table 2: Issued by the State Administration of Standards on December 26, 1981
Permissible deviation
Implementation on July 1, 1982
W length
Metric feet
Allowed tolerancesbZxz.net
GB 2844-61
Bridge size
1.2 The glass edge is refined, and its shape is shown in Figure 3. Degree
Allowed deviation
(0.5 -1.5/ ×45)
Metric size
Allowed end seat
1.3 The outer quality of the sample shall comply with the provisions of the "Flat Tempered Glass". 1.4 The samples should be selected from the test pieces produced in each shift, and the number of test pieces to be tested should not be less than 12 pieces to ensure the representativeness of the test results.
1.5 The test temperature should be kept at least 4 hours for 1 consultation. 2 Test equipment and equipment
Force: Accuracy), 5 balls, range ~ 6 kg/m"b.
Second attack.
Test pressure, working force less than 0 public hall/cm? Xie Shuiyan test Jun fire: Design force greater than kg/cm. Water pressure strength test modification diagram (Figure) W. Number:
Sealing screw rubber
GB 2844-81
Vent hole
Sealing sea shrinkage gland rubber
Wild (pieces)
He Gu Da
-1 One hydraulic strength test equipment installation diagram pressure hit installation
connection adjustment
test pressure bundle
W test case
test reverse at room temperature.
4 test steps
GB 2844 --81
.1 Connect the connecting pipes of the test fixture with the test pump and pressure gauge, and fill the cavity of the fixture with water. ±.2 Check the appearance of the sample, the test sample width and the overall dimensions, and make a record. 4.3 Place the tested sample on the inner surface of the cover plate of the test fixture, and fix it with a pressure block and a nut. The glass should not be fixed too tightly so that the glass can finally bear the force in a simply supported state. 1.4 Place the cover plate with the test sample on the bottom groove of the fixture, so that the side with the sample faces the cavity, align the position, and tighten the fixing screws around the cover plate. 4.5 Open the exhaust hole on the cover plate, start the pressure test pump to fill water into the bottom groove of the fixture until the exhaust pipe is exhausted. Close the exhaust hole; 4.6 Start to increase the pressure, increase the pressure by 0.2 mm/cm every half minute, and then maintain the pressure for half a minute. The pressure is increased step by step until the test zinc is broken.
4.7 Record the interstitial pressure when the sample is damaged, remove the cover, and clean up the broken glass in the fixture. Test records and results summary
5.1 Test records.
Thickness (mm)
Sample unit
Test format
5.2 Results summary
Sample number
Midpoint of four sides
Average
Kg/cm.
The results summary should include: sample supply unit, sample specifications, quantity, average thickness,
content. Then make a conclusion on whether it meets the standard based on the above content, and add the following remarks:
This standard is proposed by the Ministry of Building Materials Industry of the People's Republic of China. This standard is issued by the Institute of Building Materials Science Research Institute. Ambient temperature
Test date
Number of blocks below the specified strength index, etc.
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