Several issues that should be paid attention to in my country's domestic fastener industry

One is the backwardness of raw materials and related technologies. An important reason for the poor quality of fastener products is the poor quality of raw materials and the backward related technologies. For example, cold-heading steel wire rod is mainly used to manufacture fasteners such as bolts, nuts, rivets, bolts, etc. It has high requirements for chemical composition and metallographic structure. The current annual demand for cold-heading steel is about 1 million tons Among them, the automobile industry needs 100,000 tons, but due to technical reasons, the domestic cold heading steel wire is now only 300,000 tons, and nearly 700,000 tons are imported every year. According to statistics from relevant departments, 150,000 tons are needed for φ6.5mm, 160,000 tons for φ8mm, and 80,000 tons for φ9mm and φ14mm. At present, the domestic market is in short supply.

The second is the low level of technology and process equipment, which cannot guarantee the consistency of product quality. Mechanical basic parts are generally mass-produced products, and there are also products with multiple varieties and processing accuracy requirements. Therefore, the production technology and equipment requirements are high and the investment is large. High-efficiency and high-precision special machines, production lines or flexible lines are often used in foreign countries to realize efficient and automated production. (Guide: Commonly used material standard parts)

The third is the key manufacturing and testing equipment issues. Mechanical general parts have high requirements for the dimensional accuracy consistency, performance reliability and interchangeability of each part. Only a few products are allowed to exceed tolerances and are The unqualified products will be rejected after inspection before leaving the factory. Without high-precision and high-efficiency equipment, it is difficult for enterprises to survive and develop in the fierce competition. At present, the key equipment of my country's parts manufacturing enterprises mainly depends on imports. Due to the large wear and consumption of the equipment, the equipment needs to be updated and modified continuously. Imported equipment and spare parts are expensive. If we want to speed up the development of the industry, we must solve the problem of key equipment as soon as possible.　　

Fourth is the speed of new product development. China's mechanical parts industry lags far behind foreign countries in terms of technological innovation and new product development. Especially small and medium-sized enterprises lack technical strength and talents, lack of funds and necessary instruments and equipment, and lack relevant scientific and technological information and technical exchanges, resulting in long-term tracking and In the imitation stage, few have their own intellectual property rights. At present, there is not much research on product development, and few companies have independent research and development capabilities. This is a key issue for the continued development of the industry.

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