HG/T 2795-1996 Television screen rubber grinding roller HG/T2795-1996 Standard download decompression password: www.bzxz.net

HG/T2795—1996
This standard is formulated based on the standards of a Japanese company. It is equivalent to the standards of the Japanese company in terms of technical content, and the format is in accordance with the provisions of GB/T 1.1--1993 and GB/T 1.3-1987. When formulating this standard based on the standards of a Japanese company, the technical indicators of the company's standards are equivalent to those of the company. Other contents such as appearance quality and test methods are stipulated in principle in accordance with GB/T1.1 and GB/T1.3 to simplify product standards and adapt to the needs of international trade, technology and economic exchanges as soon as possible.
This standard is proposed by the Technical Supervision Department of the Ministry of Chemical Industry of the People's Republic of China. This standard is under the jurisdiction of Beijing Rubber Products Design Institute. This standard is drafted by Beijing Rubber Products Design Institute, and Xi'an Xinhua Rubber Products Factory participated in the drafting. The main drafters of this standard are: Liu Bing, Tong Mingwang, Feng Tianfu, and Zhang Wanfu. 329
Chemical Industry Standard of the People's Republic of China
Rubber Grinding Roller for Television Screen
HG/T 2795-1996
This standard specifies the structure and specifications, product marking, technical requirements, test methods, inspection rules, marking, packaging, transportation, storage and other items of rubber grinding roller for television screen (hereinafter referred to as grinding roller). It is suitable for rubber rollers for fine grinding of television glass screens. 2 Referenced Standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards will be revised, and parties using this standard should explore the possibility of using the latest versions of the following standards. GB/T5281992 Determination of tensile properties of vulcanized rubber and thermoplastic rubber. GB/T529-1991 Determination of tear strength of vulcanized rubber (trouser-shaped, right-angled and crescent-shaped test specimens) (eqvISO34:1979) GB/T 531—1992
Test method for Shore A hardness of vulcanized rubber (neqISO7619:1986) 3 Structure and specifications
The structural diagram of the grinding cylinder is shown in Figure 1. Its specifications and dimensions should comply with the provisions of Table 1. Special structures or specifications shall be determined according to the requirements of the ordering party.
1 Inner rubber layer; 2- Reinforcement layer; 3- Outer rubber layer 4 - Interface reinforcement layer (1 section) Figure 1
Approved by the Ministry of Chemical Industry of the People's Republic of China on April 10, 1996 330
Implementation on January 1, 1997
Nominal inner diameter d
500±5
350±3
Product marking
HG/T2795-—1996
4.1 Marking method: Product name, nominal inner diameter, length, standard number
4.2 Marking example: The grinding cylinder with a nominal inner diameter of 500mm and a length of 1130mm is marked as: Grinding cylinder 500×1130HG/T ××××
5 Technical requirements
The physical and mechanical properties of the grinding disc rubber shall comply with the provisions of Table 2. If there are special requirements, they shall be determined according to the requirements of the ordering party. Table 2
Hardness (Shore A)/degree
Tensile strength/MPa
Elongation at break/%
Tear strength/(kN/m)
Outer rubber
Inner rubber
The surface of the grinding cylinder shall not have defects such as bubbles, impurities, lack of rubber, cracks, mechanical damage, etc. that affect the grinding operation. 5.2
6 Test method
The specifications and dimensions of the grinding cylinder shall be measured with appropriate measuring tools. The hardness test of the grinding cylinder rubber shall be carried out in accordance with the provisions of GB/T531. 6.2
6.3 The tensile test of the grinding cylinder rubber shall be carried out in accordance with the provisions of GB/T528. 6.4
The tear strength test of the grinding cylinder rubber shall be carried out in accordance with the provisions of GB/T529, and the test shall be carried out using a right-angled specimen. The appearance of the grinding cylinder shall be inspected visually.
Inspection rules
7.1 Inspection classification
7.1.1 Factory inspection: The specifications and appearance of the grinding cylinder shall be fully inspected. 7.1.2 Type inspection: The technical requirements listed in this standard are all type inspection items. Under normal circumstances, the physical and mechanical properties of the grinding cylinder rubber shall be inspected once a month.
7.2 Judgment rules
If the specifications or appearance do not meet the requirements of this standard, it shall be judged as a substandard product. 331
HG/T2795—-1996
Physical and mechanical properties Sufficient samples shall be randomly selected for testing every month. If one indicator does not meet the requirements, double samples shall be taken for retesting of the item. If it still does not meet the requirements, the product of that month shall be a substandard product. 8 Marking, packaging, transportation, storage
8.1 The grinding cylinder should be packaged in a way that will not damage its performance. 8.2 Each package should be accompanied by a product certificate and indicate the product mark, trademark, manufacturer name, production date, inspector code, etc. 8.3 During transportation and storage, the grinding cylinder should be protected from direct sunlight, rain and snow, and should not come into contact with organic solvents such as gasoline and kerosene, as well as corrosive media. bzxZ.net
8.4 During transportation and storage, the ambient temperature of the grinding cylinder should not be higher than 40°C, and it should be kept dry and ventilated. 8.5 Under the conditions specified in 8.3 and 8.4 of this standard, the effective shelf life of the grinding cylinder is one year from the date of production. 332
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