Spring is a kind of mechanical part that works with elasticity. Although it is a small industry in the whole manufacturing industry, its role cannot be underestimated. The national industrial manufacturing industry and automobile industry need to speed up the development, and the spring industry, as one of the basic parts and components, needs a super early stage of development to adapt to the rapid development of the whole industry, Parts made of elastic materials deform under the action of external force, and recover after removing the external force. They are also used as springs.
Generally, it is made of spring steel. The types of springs are complex and diverse. According to the shape, they mainly include spiral springs, scroll springs, plate springs, and special-shaped springs. The carbon and alloy materials are poor in quality, few in variety, incomplete in specification, and raw materials are not peeled and inspected. The surface and internal defects are serious, and the tensile strength fluctuates greatly, which affects the spring quality and enterprise benefits.
Raw materials have affected the development of the spring industry in China. It is necessary to improve the quality, develop varieties, create brands, meet the needs of the industry, and replace imports. In addition to continuing to solve the problem from the chemical composition, the spring products in China are not complete. Most of them are low-tech products with simple structure, easy to form and large consumption. However, only a few manufacturers have the ability to produce high-tech products with complex structure, In order to accurately predict the fatigue life and relaxation at the design stage.
As the data basis for selecting the relationship between material and stress, we must master the FEM technology, and the output is far from enough to meet the market demand. There is also a certain gap between the product performance and the similar products abroad. At present, the proportion of technicians in the spring industry in China is too low, and the technical level of workers is low. During the Tenth Five Year Plan period, enterprises should increase the proportion and number of technicians, strengthen the on-the-job training of workers, and improve the technical level of workers, Strengthen the strength of scientific research personnel.
