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How to repair the bending and twisting of automobile sheet metal parts?

There are many reasons for bending and twisting caused by external impact or extrusion, and the common one is the damage caused by accident. Generally speaking, bending and twisting deformation near the center of impact or extrusion is severe and easy to detect. The slight deformation depends on the detection tool and the comparison with the design dimensional data to determine the degree of deformation. Sometimes it can also be judged by observing the relative position of the adjacent parts of the automobile sheet metal parts.

The deformation of the body frame, beam and column can be corrected by the support-pull method, and the direction of the support-pull force should be opposite to the direction of the deformation force. For example, the right front corner of the roof collapses after being hit, resulting in deformation of the right door frame and the right front corner of the windshield frame, and the door cannot be closed. Use the top supporter between the upper right corner and the lower left corner of the door frame, and rotate the handle to extend the screws at both ends. With the extension of the top supporter screw, the upper right corner of the roof gradually rises, the wind window frame is also reset accordingly, and the door frame can also be gradually restored. Another example is that the left side of the car is hit and the center column between the two doors on the left side is concave. At this time, a manual hoist can be used, one end is fixed on the damaged center column, and the other end is fixed on a solid column and wall, and the guide chain is pulled to make The chain is shortened, and the depression of the central column will gradually reset.

When calibrating the body frame, beam and column by the stretch method, a pad should be placed at the contact point between the body sheet metal parts and the stretch tool to avoid new damage.

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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