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What are the precautions for the design of precision automotive sheet metal parts fabrication and bending parts?

The materials commonly used in sheet metal fabrication are cold-rolled sheet (SPCC), hot-rolled sheet (SHCC), galvanized sheet (SECC, SGCC), copper (CU) brass, red copper, beryllium copper, aluminum sheet (6061, 6063, Hard aluminum, etc.), aluminum profiles, stainless steel (mirror surface, brushed surface, matte surface), according to the different functions of the product, different materials are selected, and many considerations need to be taken into account when bending sheet metal materials.

When the automobile sheet metal material is bent, the inner layer of the rounded part will be compressed, and the outer layer will be stretched accordingly; in the process of precision sheet metal fabrication, when the thickness of the sheet metal material remains unchanged, the bending The smaller the angle, the more compression and tension the material is subjected to. When its tensile force reaches its tensile limit, the sheet metal material will crack or break.

Therefore, in the design of curved parts, small bending radii should be avoided to a large extent. In general, sheet metal materials use larger bending radii. If there is no special requirement for the bending radius in actual operation, the rounded corner of the bend should be smaller than the thickness of the sheet metal material.

Cleaning operation steps:

  • 1. Wash the surface of sheet metal parts with water to clean the dirt on the surface. The cleaning method generally chooses ultrasonic cleaning: using the cavitation, acceleration, and direct flow of ultrasonic waves in the liquid to directly and indirectly affect the liquid and dirt, so that the dirt layer is dispersed, emulsified, and peeled off, so as to achieve the purpose of cleaning. , which is an essential step before precision sheet metal fabrication.
  • 2. Wash the sheet metal parts by adding soap, liquid detergent or 5% ammonia solution to the water.
  • 3. Open the electronic manufacturing parts, pay attention to the opening method of the manufacturing parts, put the removed screws into the small box, and do not lose them.
  • 4. Use a blower and a small brush to sort out the dust. The small brush can brush the gaps of capacitors and other parts, and the blower can blow the slots of each board.
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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