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GB/T 5949-2014: Test method for bubble and air line of transparent quartz glass
Status: Valid GB/T 5949: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 5949-2014 | English | 149 |
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Test method for bubble and air line of transparent quartz glass
| Valid |
GB/T 5949-2014
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| GB/T 5949-1986 | English | 199 |
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Test method of alveolus and gas line in transparent silica glass
| Obsolete |
GB/T 5949-1986
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PDF similar to GB/T 5949-2014
Basic data | Standard ID | GB/T 5949-2014 (GB/T5949-2014) | | Description (Translated English) | Test method for bubble and air line of transparent quartz glass | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | Q35 | | Classification of International Standard | 81.040 | | Word Count Estimation | 5,516 | | Date of Issue | 7/24/2014 | | Date of Implementation | 3/1/2015 | | Older Standard (superseded by this standard) | GB/T 5949-1986 | | Regulation (derived from) | National Standards Bulletin No. 19, 2014 | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | | Summary | This Standard provides a transparent quartz glass bubble, instruments and materials testing gas lines, sample requirements, test procedures, results processing and test reports. This Standard applies to transparent quartz glass bubbles, gas lines tested. | GB/T 5949-2014: Test method for bubble and air line of transparent quartz glass---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Test method for bubble and air line of transparent quartz glass
ICS 81.040
Q35
National Standards of People's Republic of China
Replacing GB/T 5949-1986
Transparent quartz glass bubbles, gas line test method
Issued on. 2014-07-24
2015-03-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
This standard was drafted in accordance with GB/T 1.1-2009 given rules.
This standard replaces GB/T 5949-1986 "transparent quartz glass bubbles, gas line test method."
This standard compared with GB/T 5949-1986, in addition to editorial changes outside the main technical changes are as follows.
--- Modify the standard name (see cover 1986 version of the cover);
--- Modify the sample requirements (see Chapter 3, 1986 edition of 2);
--- Refine the test procedure (see Chapter 4, 1986 edition 4);
--- Modify the results of the calculation (see Chapter 5, Chapter 5 of the 1986 edition);
--- Modify irregular bubble diameter measurement approach (see 52, 1986, version 4.4.);
--- Modify the test report shall include at least the contents (see Chapter 6, Section 6 of the 1986 edition).
The standard proposed by China Building Materials Federation.
The industry standard by the National Standardization Technical Committee special glass and glass (SAC/TC447) centralized.
This standard was drafted. China Building Materials Certification & Inspection Group Co., Ltd., the national security glass and quartz glass Quality Supervision and Inspection
Heart, China Building Materials Academy.
The main drafters of this standard. Wu Jie, Wangjing Xia, Yang will, Hao Yun, Yang Xuedong, Zheng Liying.
This standard replaces the standards previously issued as follows.
--- GB/T 5949-1986.
Transparent quartz glass bubbles, gas line test method
1 Scope
This standard specifies the transparent quartz glass bubble, instruments and materials gas line tests, sample requirements, test procedures and test results processing
report.
This standard applies to transparent quartz glass bubbles, gas line tests. For contour defects (such as crystallization, spots, dark scars, stones
Etc.) can also refer to this standard.
2 Apparatus and materials
2.1 Projectors. magnification of 10 to 100 times its precision bench micrometer drum is 0.01mm.
If desired, can be equally accurate reading microscope, measuring microscope.
2.2 gauze, lens cleaning paper, ethanol.
3 Sample Requirements
Quartz glass. When necessary, cut from the article, opaque surface when the test should be mechanically polished.
4 Test Procedure
4.1 with a lens cleaning paper to wipe clean the surface of the sample, with gauze dipped ethanol, if necessary, wipe the dirt surface of the sample to be tested again
With a lens cleaning paper or gauze wipe clean.
4.2 Sample visually identify the location of the test, make a mark.
4.3 test bubble, line size and density of the gas, select the appropriate magnification were measured.
4.4 from the sample surface began to adjust the focus, determination marked by the inner diameter of the bubble level, gas line length and width as well as bubbles of gas lines
the amount. When measured, the rotary table screw micrometer drum, instrument markings are projected coordinate with bubbles, gas lines clear outline of the left and right, up and down
Side tangent, record the micrometer drum bubble, gas line readings left and right side, up and down the side reading. Each diameter measuring irregularly shaped bubbles
Point of not less than three.
4.5 Determination of the depth distribution of the bubbles, the gas line, first tune the instrument focus on the surface of the sample and record the readings (l0), and then focus to the selected
Bubbles, gas line, measured reading (l1) in the depth direction.
5 results processing
5.1 Record maximum bubble diameter, width and length of the gas line, the number of bubbles, the gas line depth required records.
5.2 micrometer drum bubble, gas line difference between the two readings of the left and right side of the bubble diameter gas line width. For irregularly shaped bubbles, taking
The maximum diameter of the bubble diameter. Difference under the gas line side readings of the length of the gas line.
5.3 bubble, gas line depth according to equation (1).
a = n (l1-l0) (1)
Where.
a --- bubbles, gas line layer to the depth of the sample surface, in millimeters (mm);
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