Some standard content:
National Standard of the People's Republic of China
Fire-resistant glass
Protection
1 Subject content and scope of application
Fire-resistant glass
Glass
GB 15763 --1995
This standard specifies the product classification, technical requirements, inspection methods, inspection rules and marking, packaging, transportation, storage and other requirements for fire-resistant glass.
This standard applies to fire-resistant glass for buildings and ships. Fire-resistant glass for other uses can also be used with reference. 2 Reference standards
GB191
Packaging, storage and transportation pictorial mark
Outer diameter micrometer
GB 1216
GB3385
GB4871||tt ||Non-destructive strength test of tempered safety glass for marine windows and rectangular windows Stamping method Ordinary flat glass
GB5137.3 Test method for radiation resistance, high temperature, moisture and burning resistance of automotive safety glass GB9963 Tempered glass||tt| |GB11614 float glass
GB 11946
Marine tempered safety glass
GB 12513
Fire resistance test method for inlaid glass components
General test method for aircraft laminated glass
GJB503
3 Terms
Fire-resistant glass: Special glass that can maintain its integrity and thermal insulation properties during specified fire resistance tests. 4 Classification
4.1 Classification of fire-resistant glass according to use
Class A: fire-resistant glass for construction and other fire-resistant glass. b. Category B: Marine fire-resistant glass, including glare window fire-resistant glass and rectangular window fire-resistant glass. The outer surface glass plate is tempered safety glass, and the material type of the inner surface glass plate can be selected arbitrarily. 4.2 Fire-resistant glass is divided into grades according to fire-resistant performance
4.2.1 Class A fire-resistant glass is divided into: Class A, Class B and Class C according to fire-resistant performance. 4.2.2 Class B fire-resistant glass is divided into: B-0 level and B-15 level according to fire resistance performance. 4.3 Marking examples
A piece of Class A fire-resistant glass with a thickness of 15mm and a fire resistance of Class B is marked as follows: 15A-Z GB 15763-1995
A piece of thickness is 19mm and the fire resistance is B-15 Class B fire-resistant glass is marked as follows: State Bureau of Technical Supervision approved 440 on 1995-11-30
1996-08-01 implementation
19B-15GB15763-1995
5 technical requirements| | tt |
5.2 Dimensions and allowable deviations
5.2.1 The size and thickness allowable deviations of Class A fire-resistant glass must comply with the provisions of Table 1 and Table 2. Table 1 Allowable deviations in size of Class A fire-resistant glass Total thickness of glass
51
11≤17
1724
8>24
Total thickness of glass
51
11≤17
1724
8>24
L≤1200
±2
±3
±4
±5
Length or width L
Table 2 Thickness tolerance of Class A fire-resistant glass 1 200≤≤2 400
±3
±4
±5
±6
Allow deviation
±1
±1
±1.3 | |tt | The thickness of the outer surface glass plate shall not be less than the minimum value given in GB 11946 relative to the thickness of a rectangular window or window of this type and nominal size. 5.2.2.2 The allowable size deviation of Class B fire-resistant glass shall comply with the provisions of Chapter 4 of GB11946, and the thickness allowable deviation shall be agreed upon by both parties.
5.3 Appearance quality
5.3.1 The appearance quality of Class A fire-resistant glass must comply with the provisions of Table 3. There are no regulations within the surrounding 15mm range. Table 3
Allowed quantity
Defect name
Bubbles
Species
Adhesive layer impurities
Class
Excellent products| |tt||Grade A
Diameter 300mm
Qualified product
Diameter 300mm
Excellent product
Class B
Diameter 300mm|| tt||Qualified product
Diameter 300mm
The length allowed within the circle is allowed to be long within the circle! The long circle is allowed to be filled with
0.5~1mm|1~2mm air|0.5~1mm 3 bubbles and 6
bubbles
2| |tt||Diameter 500mm Diameter 500mm
Diameter 500mm
Allowable length within the circle
Allowable length within the circle
2 mm or less, 3mm or less
Under 2 mm
4 pcs of impurities
5 pcs
Impurities
Impurities
3 pcs
Excellent product
Grade C
Qualified product
Diameter 300mm
Diameter 300mm
Allowable length within circle
Allowable length within circle||tt ||1～2 mm air|0. 5～1
mn
4 pieces
bubbles
bubbles
1 piece||tt ||1~2 mm air
bubbles
3 pieces
diameter 500mm diameter 500mml
[diameter 500 mm
allowable length within circle|| tt||Allowable length in circle
Allowable length in circle
Below 3 mm
Below 12 mm|Below 3 mm
Impurities
4 pieces
Impurities
2 pieces
3 impurities
441
species
allowed quantity
defect name| | tt | Class A
GB 15763--1995
Continued Table 3
Class B
Qualified product
Superior product
Qualified product|| tt||Not allowed
Excellent products
Class C
Qualified products
A length of no more than 20 mm per square meter is allowed, from the edge of the glass to the surface of the glass Burst edges extending to a depth not exceeding half the thickness
4 pieces
6 pieces
4 pieces
6 pieces
shall not affect the use and can be agreed upon by both parties. 4 pieces
6 pieces
5.3.2 The appearance quality of Class B fire-resistant glass shall comply with the provisions of Class B premium products in Table 3, and the edge condition shall comply with the provisions of Article 5.2 of GB11946.
5.4 Fire resistance
5.4.1 The fire resistance of Class A fire-resistant glass must comply with the provisions of Table 4, Table 4
Fire resistance grade
Class A≥||tt| |Class B》
Class C≥
5.4.2 The fire resistance performance of Class B fire-resistant glass must comply with the provisions of Table 5. Table 5
Fire resistance grade
B-0 level
B-15 level
5.5 curvature
Fire resistance performance
Fire resistance performance| |tt||72
54
36
After 30min test, the flame does not penetrate
min
After 30min test, the flame does not penetrate through. In addition, within 15 minutes, the average temperature rise of the backfired glass shall not exceed the starting temperature of 139°C, and the temperature rise anywhere on the outer surface of the glass shall not exceed the starting temperature of 225°C
Category 5.5.1A The curvature of fire-resistant glass shall not exceed 0.3%. 5.5.2 The curvature of Class B fire-resistant glass shall not exceed 0.2%. 5.6 Optical properties
5.6.The transmittance of Class 1A fire-resistant glass must comply with the requirements in Table 6. Table 6
Total thickness of glass.
51
11≤17
17≤≤24
a>24
5.6.2, transmittance and optics of Class B fire-resistant glass Angular displacement 442
Transmittance, %
≥75
≥70
≥65
≥60
GB157631995||tt ||Except for the transmittance and optical angular displacement of the fire-resistant glass used in the cab and observation room, which comply with the provisions of Articles 5.6 and 5.7 of GB11946, the transmittance of the fire-resistant glass used in other parts shall comply with the provisions of 5.6.1 Regulation. 5.7 Heat resistance
Take 3 samples for testing. After the test, the appearance quality and optical properties of the 3 samples are in compliance with the provisions of Article 5.3 and 5.6, which means they are qualified. If one sample meets the requirements, it is unqualified. .
When 2 samples meet the requirements, 3 new samples are tested additionally. When all 3 samples meet the requirements, they are qualified. 5.8 Cold resistance
Take 3 samples for testing. After the test, the appearance quality and optical properties of the 3 samples are in compliance with the provisions of Articles 5.3 and 5.6, which means they are qualified. If one sample meets the requirements, it is considered unqualified.
When 2 samples meet the requirements, 3 new samples will be tested additionally. When all 3 samples meet the requirements, they are qualified. 5.9 Radiation resistance
Take 3 samples for testing. After the test, if all 3 samples meet the following requirements, they are qualified, and if 1 sample meets the requirements, it is unqualified. When two samples meet the requirements, three more new samples are tested. If all three samples meet the requirements, they are considered qualified. After the test, no significant discoloration, bubbles or turbidity will occur in the sample. At the same time, the relative reduction rate of the transmittance of the fire-proof glass should not be greater than 10%, see the following formula:
=× 100% ≤10%|| tt||In the formula: α transmittance before ultraviolet irradiation; b --- transmittance after ultraviolet irradiation.
5.10 Mechanical Properties
5.10.1 The impact resistance of Class A fireproof glass is tested by taking 6 samples. If 5 or more samples meet any of the conditions specified in the following ab, they are qualified. If it meets 3 yuan or less, it will be deemed as unqualified.
When 4 samples are consistent, 6 more new samples are tested. When all 6 samples are consistent, they are qualified. The glass was not damaged.
a.
b． If the glass is broken, the steel ball cannot penetrate the specimen. 5.10.2 Punching resistance of Class B fire-resistant glass. This performance is only tested for the outer surface tempered glass of Class B fire-resistant glass. Randomly select 4 pieces of glass produced under the same process conditions, with the same size and thickness for testing. Each piece of glass will be deemed qualified if it does not break after the test. If more than one piece of glass breaks, it will be deemed unqualified. When one piece of glass is broken during the test, four new samples are tested additionally. If all four pieces are not broken, it is considered qualified. 6 Inspection methods
6.1 Measurement of size and thickness
Dimensions are measured with a steel ruler or steel tape measure with a minimum graduation of 1mm. The thickness is measured at the midpoint of the four sides of the glass with a micrometer that complies with the requirements of GB1216 or an instrument with the same accuracy. The result is expressed as the average of the four points, and the value is accurate to 0.1mm. 6.2 Appearance quality
Under good natural light and scattered lighting conditions, conduct a visual inspection at a distance of 600mm from the front of the glass. 6.3 Fire resistance performance
shall be mounted on the component for fire resistance test according to GB12513. 6.4 Curvature
Place the glass vertically, place the straight edge of the steel ruler close to the sample, and use a feeler gauge to measure the maximum gap between the glass and the steel ruler. The percentage of this value to the side length is The curvature of the glass. 443
6.5 Optical properties
GB 15763--1995
Inspection shall be carried out according to Chapter 10 of GJB503, or equivalent equipment may be used for inspection. 6.6 Heat resistance
6.6.1 Use a sample with a size of 300mm×300mm. Before the test, the sample should be placed at room temperature for more than 6 hours, the appearance quality should be checked and the defects should be recorded in detail.
6.6.2 Put the sample into the constant temperature box, raise the temperature in the box to 50℃, keep it for 6 hours and then take it out. 6.6.3 Place the removed sample at room temperature for more than 6 hours, and check its appearance quality and light transmittance. 6.7 Cold resistance performance
6.7.1 Use a sample with a size of 300mm×300mm. Before the test, the sample should be placed at room temperature for more than 6 hours, the appearance quality should be checked and the defects should be recorded in detail.
6.7.2 Place the sample into the low temperature box, lower the temperature inside the box to -20°C, keep it for 6 hours and then take it out. 6.7.3 Place the removed sample at room temperature for more than 6 hours, and check its appearance quality and light transmittance. 6.8 Radiation resistance
shall be tested according to the GB5137.3 method.
6.9 Impact resistance of Class A fire-resistant glass
6.9.1 Use a 610mm×610mm sample, keep it in a room at 23±5℃ for 4h before the test, and conduct the test immediately after taking it out. 6.9.2 Place the sample on the frame shown in Figure 1. When the original glass used for fire-resistant glass has different thicknesses, the thin side should face the impact body.
610
600
570
10 (minimum)
660
Picture 1
1--upper frame , 2-lower frame, 3-rubber (thickness 3mm); 4-rubber plate, thickness 3mm, width 15mm, hardness A50z5-Sample 6.9.3 uses a steel ball with a mass of 1040g and a smooth surface, placed at a distance of At a height of 1000mm on the surface of the sample, fall freely from a static state to within 25mm of the center point of the sample without external force, and observe the damage state. A sample can only be impacted once. 6.10 The stamping resistance of Class B fire-resistant glass
shall be tested according to GB3385.
444
7 Inspection Rules
7.1 Inspection Classification
7.1.1 Factory Inspection
GB15763-1995
The inspection item is dimensional deviation , appearance quality and light transmittance. 7.1.2 Type inspection
The inspection items are all items stipulated in the technical requirements of this standard. However, the radiation resistance performance can be determined by the supplier and the purchaser according to the product use. Type inspection should be carried out when one of the following conditions occurs. Trial prototype appraisal of new products or old products transferred to factory for production. a.
b.
After formal production, if there are major changes in structure, materials, and processes that may affect product performance. During normal production, inspection should be carried out periodically or after a certain amount of production has been accumulated. c.
When the product resumes production after a long-term suspension. d.
e.
When the factory inspection results are significantly different from the last type inspection. When the national quality supervision agency requests type inspection. 7.2 Sampling plan
7.2.1 The dimensional deviation, appearance quality, and curvature of Class A fire-resistant glass shall be randomly sampled in accordance with Table 7. surface?
Batch range
2~8
9~15
16~~25
26~50
51~90|| tt||91150
151~280
281~500
Number of samples
2
3
5
8
13
20
32
50
Pass judgment number
0
8
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2
3
5
7
10
Number of unqualified judgments
1||tt| |1
2
3
4
6
8
11
block
7.2 .2. The sampling plan for Class B fire-resistant glass should comply with the provisions of Article 7.2 of GB11946. 7.2.3 For other technical properties required by the product, if products are used for inspection, they shall be randomly selected from the batch of products according to the quantity required by the test items. If samples are used for inspection, the same materials and process conditions as the products shall be used. Samples prepared below. 7.3 Judgment rules
If the number of unqualified products in terms of dimensional deviation, appearance quality or curvature of Class A fire-resistant glass products is equal to or greater than the number of unqualified products in Table 7, then the dimensional deviation, appearance quality or curvature of the batch of products will be considered Unsatisfactory degree. If the number of unqualified products in size deviation, appearance quality or curvature of Class B fire-resistant glass products is equal to or greater than 7 in GB11946.If there are two unqualified judgment numbers in Table 11, the dimensional deviation, appearance quality or curvature of the batch of products will be deemed to be unqualified. Other properties of fire-resistant glass should also comply with corresponding provisions. Otherwise, the item is considered unqualified. If any of the above items is unqualified, the batch of products will be considered unqualified. 8 Logo, packaging, transportation and storage
8.1 Logo
8.1.1 Product mark
The lower right corner of each product must have a logo, manufacturer name or trademark that is not easy to erase. 445
8.1.2 Packaging Marking
GB15763--1995
Each packaging box should be marked with the name, specifications, fire resistance level, quantity, receiving unit, Manufacturer's name and date of manufacture. And affix (or write) the "handle with care, moisture-proof, upward" sign that complies with GB191. 8.2 Packaging
8.2.1 The product should be packed in wooden boxes or other packaging boxes. The glass should be placed vertically in the box. Each piece of glass should be wrapped with plastic cloth or paper. There should be a plastic cloth or paper between the glass and the packaging that will not easily cause scratches on the glass. Fill the appearance defects with light and soft materials. 8.2.2 The certificate of conformity and packing list should be placed in the packaging box. The packing list should indicate the product type, specification, quantity and packing date. 8.3 Transportation
During transportation, wooden boxes must not be placed flat or tilted. The length should be in the same direction as the vehicle movement, and rainproof measures should be taken. 8.4 Storage
The product should be stored vertically in a dry room. Additional notes:
This standard is proposed by the National Bureau of Building Materials Industry. This standard is drafted by the Glass Research Institute of the China Academy of Building Materials. The main drafters of this standard are Liu Zhijun, Ji Shuyi, Wang Ruyang and Tian Sheng. 446
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