How are the two automotive stamping parts processes of punching and bending carried out?
Auto stamping parts, as the name suggests, are metal stamping parts that constitute auto parts. In automobile stamping parts, some of them become auto parts directly after stamping, and the other part needs to be processed by welding, machining, or painting before they can become auto parts after stamping. There are many kinds of automobile stamping parts, such as spring tray, spring seat, spring bracket, end cover, cover, compression valve cover, compression valve sleeve, oil seal seat, bottom cover, dust cover, impeller, oil seal, etc. Tubes, lugs, brackets, etc. are all automotive stamping parts.
Cold stamping of stamping parts, from a professional point of view, refers to the use of a die on a press to apply a certain pressure to the material to separate or plastically deform it, thereby obtaining the desired finished product. The two processes of punching and bending, generally speaking, are punched first and then bent to facilitate the fabrication of CNC punching machines. However, in some special cases, it is necessary to bend and then punch.
Stamping parts, if they are formed by hot stamping, then, in the specific process, mainly include the following, which are:
Blanking: That is, the sheet is punched into the desired outer contour blank for subsequent fabrication.
Austenitizing: It consists of two stages of heating and holding. The purpose of its fabrication is to heat the material to a suitable temperature so that it has good plasticity.
Transfer: The heated material is taken out of the heating furnace and then sent to the thermoforming mold. The key point is that the speed should be fast. If the speed is too slow, it will affect the quality of the stamping parts.
Stamping, quenching and subsequent treatment: stamping and forming the material at a certain temperature so as not to affect the forming performance of the material. After the material is formed, the mold must be closed and kept under pressure for a certain period of time, so that the material has good properties, and at the same time, quenching treatment is also required. In the follow-up treatment, it is mainly some surface treatment, or small fabrication such as drilling.
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