JB/T 56036-1999 Polyvinyl chloride fiberglass hose product quality classification JB/T56036-1999 standard download decompression password: www.bzxz.net

Mechanical Industry Standard of the People's Republic of China
JB/T56036
1999-12-30
Wa
2000-06-01
JB/T560361999
This standard is a revision of JB56036-192 "Quality Classification of Polyvinyl Chloride Fiberglass Painted Sleeve Products". Compared with JB/T56036-92, this standard has modified the writing format of the standard and the technical content as follows based on the revised JB T81512 product standard. 1 Added the quality classification performance requirements of 2715-3; 2 Added the allowable deviation and wall thickness requirements of seven specifications with nominal inner diameters of 3.57.0, 14.0, 18.0, 23.0, and 27.0 mm; 3 Changed the performance "flammability" to "flame spread"; 4 The breakdown voltage, the required values ​​of qualified products, first-class products, and superior products under various test conditions were adjusted accordingly. From the date of implementation, this standard will replace JB/T56036-92. This standard was proposed and managed by the National Technical Committee for Standardization of Insulating Materials. The drafting units of this standard are: Guilin Electric Science Research Institute, Shanghai Electric (Collective) Company Electric Fiberglass Factory, and the drafters of this standard are: Zheng Minmin and Wang Yunyu. This standard was first issued on November 10, 1988, revised for the first time on May 21, 1992, and revised for the second time in 1999. The National Technical Committee for Standardization of Insulating Materials is responsible for the interpretation of this standard. 1
1 Scope
Technology
This standard specifies the requirements for the quality classification of polyvinyl chloride glass fiber hose products. This standard is applicable to the product quality grade assessment of polyvinyl chloride glass fiber hose: 2 Referenced standards
JB/T560361999
JB/T5603692
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard: At the time of publication of the standard, the versions shown are all revised. All standards will be revised, and parties using this standard should explore the possibility of using the latest version of the following standards. GB/T 7114—1986
Test methods for electrical insulating varnish tubes (neqIEC60684--2:1984)Guidelines for quality grading of industrial products
GB/T 12707--1991
JB/T 8151.2—1999
3 Classification and naming
Polyvinyl fluoride glass red dimensional hose (e9v1FC60684-3-406/408:1988) According to the provisions of JB/8151.2, the product models are: 2715-1, 2715-22715-3. 4 Requirements
4.1 The requirements for product quality grading for the performance of the general product shall comply with the provisions of Table 1: If the purchase contract stipulates that a bacterial growth test is required, the special performance requirements in Table 2 shall be met. The performance requirements of qualified products in Table 1 are completely consistent with the provisions of JB/T8151.2. 4.2 Evaluation of product quality grades
4,2.1 Necessary conditions for superior products
4.2.1.1 After sampling inspection, if one sample of the product meets the performance requirements of superior products, it will be scored as 5 points, if it meets the performance requirements of first-class products, it will be scored as 4 points, and if it meets the performance requirements of qualified products, it will be scored as 3 points: If the sum of the scores of the three samples of the product is less than 9 points, it is judged that the product performance does not meet the performance requirements of qualified products. If it is full of 9 points and no sample scores less than 3 points, it is judged that the product performance meets the performance requirements of qualified products. If it is full of 12 points, it is judged that the product performance meets the performance requirements of qualified products. If the score is 14 or above, the product performance is determined to have reached the first-class product performance requirements. If the score is 14 or above, the product performance is determined to have reached the superior product requirements: 42.1.2 In the four quarters of the year, the product has at least three times reached the superior product performance requirements, and another time reached the first-class product performance requirements.
4.2.1.3 The enterprise should have factory conditions for stable production of superior products, and can organize production according to the superior product performance requirements. Among qualified products, the rate of reaching the superior product performance requirements in the factory inspection items is above 80%. 4.2.2 Necessary conditions for first-class products
4.2.2.1 After sampling inspection, the product is determined to have reached the performance requirements of first-class products according to 4.2.1.1. 4.2.2.2 The product shall meet the performance requirements of first-class products at least twice and meet the performance requirements of qualified products once in the four quarters of the type inspection results within one year.
JB/T56036
4.2.2.3 The enterprise shall have the working conditions to stably produce first-class products and be able to organize production according to the performance requirements of first-class products. Among the qualified products, the percentage of the inspection items that meet the performance requirements of first-class products (including superior products) shall be above 80%. 4.3. Other related requirements shall comply with the provisions of 4.5 of JB/T8151.2-1999. Methods
5.1 Product performance test
According to the methods specified in JB/T7114; other related requirements shall be checked according to the provisions of 4.5 of JB/T8151.2-19994. 5.2 Factory condition review
The local quality and technical supervision bureau, or the quality inspection agency that meets the provisions of 3.2.1 of GB/T12707-1991, or the organization or agency designated by the competent department with the function of quality supervision shall conduct the review: 6 Quality assessment procedures
6.1 Three samples are drawn from products of different specifications or batches, and the product properties are graded and determined according to the provisions of 4.2.1.1: 6.2 The factory conditions shall be checked according to the provisions of 5.2. 6.3 According to the provisions of 4.2.1 or 4.2.2, the product quality grade shall be evaluated 2
Length and allowable deviation
Inner diameter. Wall thickness and allowable deviation
Welding heat resistance
Bending resistance after heating
Bending at low temperature
Breakdown voltage
Shot bath or straight core
Axle, 250mm electrode
At 23±2℃
Minimum value
130±2Median value
Minimum value
Qualified product
2715—1
First-class product
Qualified product
2715—-2
First-class product||tt ||Superior products
Qualified products
The coating is uniform and the surface is smooth. There should be no defects that affect the product performance. 1000-18
See Table 3
The specimen shall not crack or swell obviously, but slight melting resistance is allowed. The coating shall not have visible cracks or swells
The coating shall not have visible decay or shedding
2715—3
First-class products
Superior products
Applicable only to those with a nominal inner diameter of 5mm
and below
Test temperature: 130±2℃;
Exposure time: 96±1 h;
Mandrel diameter according to Table 4
Test temperature is not higher than -25℃,
Mandrel diameter according to Table 4
Sieve ball bath method is not applicable to hoses with nominal inner diameter of more than 3mm
Breakdown voltage
Straight mandrel, 25mm electric age
Minimum value at 23±2℃
Median value at 130±2℃
|Minimum value
After mixing
Continuous resistance
Minimum value
At 23±2℃
Fire resistance ductility
Method A or Method B
Qualified products
2715-1
Superior products
≥1×l0m
Table (end)
Qualified products
2715—2
1 x 107
Excellent product
21x1010
321x10A
Qualified product
2715-3bzxz.net
First-class product
Excellent product
In addition, any of the indicator flags
of the three sample towels
should not be burned. Cotton should not be ignited by ignited or hot particles or ignited drops. Nominal inner diameter Resistance to bacterial growth Inner diameter deviation Double spacing (±): 0.25 Unidirectional (+) Note: When ordering, specify the inner diameter tolerance type JB/T560361999 Test method 2715-1 GB/T2423.6
2715—1
2715—2
2715—2
2715--3
2715—3
Nominal inner diameter
Mandrel head diameter
After heating
Low pressure
JB/T56036
Nominal inner diameter
Total shaft diameter
After heating
Under temperature
Nominal inner diameter
Mandrel diameter
Low pressure
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