According to the rules and regulations, nylon, vinylon and silk should be used for seat belts and safety ropes, and general carbon steel should be used for metal fittings. In fact, because of the low intensity of vinylon data, it is used less and less in practical production. The strength of silk material is similar to that of nylon, with good heat resistance and light specific gravity. It is a good material for making seat belts, but it is expensive and rarely used except in special places. With the continuous development of science and technology, the research and development of new technologies and new products, some new materials with high strength, light weight and good comfort are used in the production of seat belts and safety ropes, and these materials should not be excluded from the production of seat belts.
When selecting the original data, the manufacturer should pay attention to distinguish high strength yarn from polypropylene yarn. Polypropylene yarn is not aging-resistant, and it is forbidden to be used in the production of seat belts by the state. If polypropylene fiber is used to produce seat belts, it will pose a great threat to the life safety of users. Because polypropylene yarn and high strength yarn are very similar in appearance, it is difficult for non-professionals to identify them, so manufacturers should pay special attention when purchasing original materials. When it is impossible to identify its authenticity, it should be sent to the relevant departments for inspection, and it can only be used after passing the inspection. Users of seat belts should also improve their awareness of self-protection, pay attention to identifying the information of seat belts when purchasing, and ask the manufacturer for relevant certificates. If you can’t confirm, you should prevent it from being used.
It is expressly stipulated in the safety belt specification that welded semi-rings, triangular rings, 8-shaped rings, pin rings and rings are prohibited. However, in order to reduce the production cost, some enterprises still assemble seat belts with welded parts, and some users have not paid enough attention to this problem, which has great unsafe risks. The welding process itself is an old production process with good welding quality, and the joint strength will not be lower than other parts of the fittings; If the welding quality is not good enough, when the metal parts are stressed, they will be disconnected from the welding joint first. Most of the enterprises that produce welded parts are informal manufacturers with low technical level, poor processing ability and uncertain quality. It is very risky to assemble seat belts with such accessories. Once the incident breaks out, casualties are inevitable. Therefore, both producers, sellers and users should pay attention to this problem and ensure good quality.
Post time: Aug-23-2023