60% -70% of the metal parts in automobile production need to be formed by plastic processing. Stamping is an important method. It is one of the most basic, traditional and important metal processing processes in precision stamping parts processing plants. In medium and heavy-duty vehicles, most cover parts such as body outer panels, and some load-bearing and supporting parts such as frames and carriages are automotive stamping parts. Its characteristics are light weight, good stiffness, and after the sheet is plastically deformed, the internal structure of the metal is improved, so that the strength of the stamping parts is increased.

Automotive stamping parts technology is developing in the direction of precision, multi-function, high efficiency, energy saving, safe and clean production. The production process level and quality of stamping parts have a direct impact on the quality and cost of automobile production to a large extent. Therefore, to do a good job in quality, precision stamping parts processing plants must master the inspection methods of automotive stamping parts.

1. Contact inspection: wipe the surface of the outer cover with clean gauze. The inspector needs to wear contact gloves to contact the surface of the stamping part along the longitudinal direction of the stamping part. This inspection method depends on the inspector‘s experience.

2. Oiling inspection: Use a clean brush to evenly apply oil to the entire outer surface of the stamping part in the same direction. Put the oiled stamping part under strong light for inspection, and the fine pits, deflated ponds, and ripples on the stamping part can be easily found by this method in precision stamping parts processing plants.

3. Polishing of flexible gauze: Use flexible sand mesh to stick to the surface of the stamped part and polish it lengthwise to the entire surface, any pitting or indentation will be easily discovered.

4. Oilstone grinding: First wipe the surface of the outer cover with clean gauze, then polish with oilstone, and polish with relatively small oilstone on areas with arcs and hard-to-reach areas. Some special areas can also be supplemented by horizontal grinding.

5. Visual inspection: Visual inspection is primarily used to detect the appearance abnormalities and macro defects of stamped parts.

Nowadays, the market competition for automotive stamping parts has reached its peak. In order to win customers, many precision stamping parts processing plants have focused their efforts on price wars, and even in order to win price wars, they are willing to compress production costs without a bottom line. This marketing method will definitely be eliminated by society. Even if they achieve success for a while, they will not go far in the end. In serious cases, it will bring unnecessary economic and reputational losses to future cooperation. Good quality control is the foundation for the long-term development of stamping parts processing plants.

This article is from EMAR Mold Co., Ltd. For more EMAR related information, please click: www.sjt-ic.com,