Stamping process of stamping parts
1. The impact of stamping parts of the plastic and deformation resistance factors are as follows:
(1) the influence of chemical composition and organization;
(2) deformation temperature;
(3) deformation speed;
(4) stress state;
2. The yield condition is expressed by the fact that the point begins to yield only if there is a certain relationship between the stress components.
3. What are the main mechanical properties of the material:
The mechanical properties of the material are different, and the mechanical properties are different, and the stamping performance of the stamping parts is not the same. The main mechanical properties of the material are: plasticity , Elasticity, yield limit, strength limit, etc., these properties are also the main factors affecting the stamping performance.
4. How does the work hardening effect affect the stamping process?
When the plastic deformation occurs at room temperature, the strength index (such as yield strength and hardness) of the metal is improved and the plasticity index (such as elongation) is reduced, which is called cold hardening phenomenon. , The deformation of the deformation of the deformation, the greater the deformation resistance, which can make the deformation tends to be uniform, thereby increasing the degree of deformation of the entire workpiece, such as bulging process, work hardening phenomenon, making the deformation of the workpiece uniform, the workpiece is not easy Cracking phenomenon.
5. What are the effects of plate thickness directivity on the stamping process:
As the ingot crystal and sheet metal rolling occurs when the fiber and other factors, the plasticity of the sheet will be different because of the direction of the difference, this phenomenon is known as the plastic sheet of the opposite sex. Anisotropy, including the thickness of the plate and the plane Anisotropy. The anisotropy in the thickness direction is expressed by the thickness coefficient r of the plate thickness. The larger the value of r, the thinner the sheet is in the process of deformation. As in the drawing step, increase the r value, Easy to deformation, and the thickness direction is not easy to deformation, which is conducive to improve the degree of deformation and ensure the quality of the product through the soft steel, stainless steel, aluminum, brass and other materials show that increasing r value can improve the deep drawing Deformation degree, so the greater the r value, the material deep drawing performance