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How to repair wrinkled car sheet metal parts due to impact?

The quality of car repair affects the actual use of the car to a certain extent, and is also related to the life safety of drivers and passengers. Therefore, auto repair shops need to continuously improve their own repair technology and improve repair standards, so as to ensure the safety of repaired vehicles.

When the car is subjected to strong rib extrusion, it will cause its sheet metal parts to wrinkle. If the sheet metal part is stretched (elastically deformed), it can be judged as a minor damage condition; if the sheet metal part is plastically deformed, it can be judged as a major damage condition. When repairing wrinkle damage, it is necessary to apply a force opposite to the impact force on the damaged part, so that the wrinkle can be pulled apart, converted into concave and convex damage, and then repaired by a special repair method for concave and convex damage.

The so-called concave-convex damage repair method is repaired by the item pulling method or the hammering method. If the sheet metal part has minor concave-convex damage, you can place the shim at the low position of the concave, keep the placement direction opposite to the concave damage direction, and change the shim part by hammering; if the sheet metal When there is a heavy concave-convex damage to the parts, it is necessary to place a gasket on the opposite side of the low position of the concave, and then use a pulling tool to support the concave.

The car sheet metal parts damaged by folds can also be repaired by the brace method, of course, if the repair conditions allow. If the repair conditions do not allow, the body of the car needs to be disassembled first, and repaired under the car, pry open the body folds from the inner side and heat it, and then hammer the protruding position of the folds, so that there are Help to restore it to the ideal state.

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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