What are the methods for inspecting automotive stamping parts?

2019-09-26 09:15:44

The inspection method of automobile stamping parts is an important method to ensure the quality of finished products and high qualified rate. For the operators of stamping parts production enterprises, they generally need to know how to carry out the inspection. The following six inspection methods are mainly arranged for Rongzhi automobile stamping parts. Careful analysis can be divided into three categories: sensory inspection, polishing inspection, and so on. Tool inspection.

Sensory inspection can be divided into visual inspection and touch inspection, polishing inspection can be divided into asphalt polishing and flexible screen polishing, and tool inspection can be divided into oil coating inspection and gauge inspection.

1. Visual inspection: It is mainly used to discover abnormal appearance and macroscopic defects of stamping parts.

2. Touch test: wipe the surface of the outer covering with clean gauze. Inspectors need to wear touch gloves to touch along the stamping part vertically close to the surface of the stamping part. This inspection method depends on the experience of the inspectors. If necessary, the suspicious area can be polished and verified by oil stone, but this method is an effective and rapid inspection method.

3. Oilstone grinding:

1) First, clean the surface of the outer covering with clean gauze, then polish with asphalt (20 x 20 x 100 mm or larger), arc areas and hard to reach areas with relatively small asphalt polishing (e.g. 8 x 100 mm semi-circular asphalt)

2) The choice of particle size depends on the surface condition (such as roughness, galvanizing, etc.). Fine-grained oilstone is recommended. The direction of polishing is basically along the longitudinal direction, and it fits well to the surface of stamping parts. Some special places can also be supplemented by horizontal polishing.

4. Flexible yarn grinding: clean the surface of the outer covering with clean gauze. The surface of stamping parts is polished vertically with flexible sand mesh to the whole surface, and any pitting and indentation can be easily found.

5. Oil test: wipe the surface of the outer covering with clean gauze. Then use a clean brush to uniformly apply oil in the same direction to the entire outer surface of the stamping part. Put the finished oil stamping parts under strong light for inspection, and it is suggested that the stamping parts be erected on the body position. With this method, it is easy to find tiny pits, hollows and ripples on stamping parts.

6. Inspection of checking fixture: Put stamping parts into checking fixture, and inspect stamping parts according to operating requirements of checking fixture instructions.

Strictly control the quality, we will produce more competitive stamping products, with low cost to create good products is also the goal of every enterprise to pursue, when we can not control the price of raw materials, we can only choose in the production process to do serious operation, testing, reduce inferior products. Number.