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Do you know the inspection method of China VI standard automobile stamping parts?

1. Touch inspection

Wipe the surface of the auto stamping part with a clean gauze. The inspector needs to wear touch gloves and touch the surface of the stamping part along the longitudinal direction of the stamping part. This inspection method depends on the experience of the inspector. If necessary, the detected suspicious area can be polished with a whetstone and verified, but this method can be regarded as an effective rapid inspection method.

2. Oiling inspection

Wipe the surface of the auto stamping part with a clean gauze. Then use a clean brush to apply oil evenly to the entire outer surface of the stamping in the same direction. Put the oiled stamping parts under strong light for inspection. It is recommended to erect the stamping parts on the body position. With this method, tiny pits, slumps, and ripples on stamping parts can be easily found.

3. Grinding of flexible gauze

Wipe the surface of the auto stamping part with a clean gauze. Use a flexible sand mesh to close to the surface of the stamping part and grind it to the entire surface in the longitudinal direction, and any pitting and indentation will be easily found.

4. Whetstone grinding

  • (1) First wipe the surface of the stamping parts with a clean gauze, then use a whetstone (20×20×100mm or larger) for grinding, and use a relatively small whetstone to polish the places with arcs and hard-to-reach places (Example: 8×100mm semi-circular whetstone)
  • (2) The choice of whetstone particle size depends on the surface condition (such as roughness, galvanizing, etc.). Fine-grained Whetstone is recommended. The direction of whetstone grinding is basically carried out in the longitudinal direction, and it fits well with the surface of the stamping parts, and some special places can also supplement the horizontal grinding.

5. Visual inspection

Visual inspection is mainly used to find abnormal appearance of automobile stamping parts: it is mainly manifested in the appearance of imprinting, scratches, missing processes, etc., which is not much different from the three points.

6. Inspection tool

Put the stamping parts into the product-specific inspection tool, and test the automobile stamping parts according to the operation requirements of the inspection tool manual, mainly to check whether the position of the product is consistent with the physical assembly

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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