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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.

Automotive Sheet Metal Fabrication

Pintejin Sheet Metal shop offers a cost-effective solution for a wide range of industries with our custom metal stamping and custom sheet metal fabrication capabilities. Our stampnig operations include a variety of sheet-metal forming manufacturing processes, such as punching, blanking, embossing, bending, flanging, and coining. Our professional, experienced and well-trained engineers can execute the complex metal stamping operations with precision and accuracy.

No matter what your metal fabrication needs are, Pintejin can offer the right solution: from single sheet metal part or sub-assembly of stamped metal parts to turnkey solutions for mechanical and electrical assemblies. We have the technology, equipment and the experience to fabricate customised metal products from aluminium sheet metal fabrication, steel, zinc plated steel, stainless steel sheet metal fabrication, brass and copper. Designs that require CNC machining of surfaces or components can be accommodated. We can supply polished, galvanized, zinc coated or powder coated finishes for any sheet metal work or stamped metal components. Coupled with our accurate and reliable metal fabricating equipment, we guarantee precision and repeatability in custom sheet metal work. You’ll be taking advantage of the best sheet metal fabrication china can produce.


With Pintejin automated and highly streamlined sheet metal fabrication service, you can expect a sheet metal fabrication quote within 12 hours and lead times as quickly as three days.Our rapid prototyping offering also includes a solid and reliable manufacturing capability (led by our expert team with 15+ years of experience) and technical and quality assurance, including SGS and RoHS material certifications, in-process quality reports, and First Article Inspection.



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