Fasteners have bright future development prospects.

From the perspective of the development of the entire manufacturing industry, fasteners are called "the rice of industry". Fasteners usually only occupy a small part of the whole product structure, but as an organic part of the product, they play an important role. From the perspective of the application of standard fasteners in the world, the industries mainly include electronics industry, the maintenance and construction industry, and the automobile industry are the three major users of fasteners. For example, there are many types of automotive fasteners, which are mainly divided into four categories, including standard fasteners, non-standard fasteners, standard mechanical components, and non-standard mechanical components; among them, non-standard fasteners have high-quality requirements. Among the non-standard fasteners, engine connecting rod bolts, flywheel bolts, wheel bolts, suspension bolts, etc., due to their high quality and good stability, our country has not yet met the localization requirements, and a small part relies on imports.
Due to the lack of attention paid to fasteners in the automotive industry, the development of automotive fasteners lags far behind the development of the automotive industry. Fasteners account for a small proportion of finished automobiles, but the damage to the whole vehicle is very large. The reasons for the fracture of fasteners can be analyzed from the following three aspects. The strength of the materials used for fasteners is not enough. Fracture occurs under the action of external load; because the material used in the fastener is unreasonable during the heat treatment process, there are defects such as surface cracks; due to the fatigue fracture of the fastener under the action of external long-term load.
To produce high-quality fastener standard products, in the process of selecting the steel used for fasteners, the chemical composition of the steel used must be strictly controlled, and the content of harmful elements S, P, and O in the steel must be reduced, and the oxides, sulfides, and sulfides must be reduced. The influence of inclusions on cracking in the production process of fasteners; during the heat treatment of fasteners, the temperature, time, and atmosphere in the heating furnace are strictly controlled to reduce the oxidation and decarburization of the surface of the finished fasteners. Therefore, final sorting and inspection must be carried out after mass production is completed, such as manual sorting, eddy current sorting, optical sensing size and contour sorting, and sorting out defective products with obvious defects, such as surface cracks, surface Decarburized and dimensionally off-spec products to meet customer requirements. Defect-free fasteners are the key to smooth running assembly lines, safe vehicle travel, and a manufacturer's good reputation.
Although China's output is huge, fasteners started relatively late compared to foreign countries. Many enterprises have low investment in science and technology, weak scientific and technological development force, backward process technology, long delivery cycle, greatly lagged improvement in quality and increase in quantity, weak awareness of innovation strategy of enterprises, insufficient independent innovation ability of enterprises, and innovation system of enterprises. Construction is not. In recent years, a large number of foreign fastener companies have poured into China, while my country's fastener companies have both challenges and opportunities. Domestic fastener companies need to build brands, improve quality, ensure a higher part qualification rate, and continue to work towards the goal of zero defects.
Although there is still a significant gap between domestic fastener enterprises and foreign advanced levels, my country's fastener standard parts industry has a certain industrial foundation and advantages after long-term development. Small-scale, weak technical force, relying on inferior raw materials and cutting corners to compete at low prices, fastener companies without brands will be eliminated in the transformation and innovation.
From the perspective of the world pattern, my country is big in fastener production. The world cannot do without China's fastener manufacturing. my country also needs the world market. The industry has broad development space whether it is horizontal scale development or vertical technology upgrade. The industry must work hard to Become a powerhouse in fastener production.