There are six inspection methods for automobile stamping parts

2022-08-29 16:08:34

Only by strictly controlling the quality can we produce stamping products with more market competitiveness. It is also the goal of every enterprise to create good products with low cost. When we can not control the price of raw materials, we can only choose to operate and test carefully in the production process to reduce the quantity of inferior products.

The inspection method of automobile stamping parts is an important method to ensure the quality of finished products and high pass rate. For the operators of stamping parts manufacturing enterprises, they should generally master how to carry out the inspection. The following six inspection methods for automobile stamping parts can be divided into three categories through careful analysis: sensory inspection, grinding inspection and tool inspection.

Sensory inspection is divided into visual inspection and touch inspection, grinding inspection is divided into oilstone grinding and flexible gauze grinding, and tool inspection is divided into oiling inspection and gauge inspection.

1. Visual inspection: mainly used to find out the appearance abnormalities and macro defects of stamping parts.

2. Touch inspection: clean the surface of the outer cover with clean gauze. The inspector shall wear touch gloves to touch the surface of the stamping along the longitudinal direction of the stamping. This inspection method depends on the inspector's experience. If necessary, oil stone can be used to polish the detected suspicious area and verify it, but this method is an effective and rapid inspection method.

3. Oilstone grinding:

(1) First, clean the surface of the outer cover with clean gauze, and then polish it with oilstone (20 × twenty × 100mm or more), the places with arc and the places difficult to contact are polished with relatively small oilstone (for example: 8 × 100mm semi-circular oilstone)

(2) The choice of the particle size of the oil stone depends on the surface conditions (such as roughness, galvanizing, etc.). Fine grained oilstone is recommended. The polishing direction of the oil stone is basically along the longitudinal direction, and it fits well with the surface of the stamping part. In some special places, the horizontal polishing can be supplemented.

4. Flexible gauze polishing: clean the surface of the outer cover with clean gauze. Use flexible sand net to stick to the surface of stamping parts and polish it to the whole surface longitudinally. Any pockmarks and indentation will be easily found.

5. Oiling inspection: clean the surface of the outer cover with clean gauze. Apply oil evenly to the whole outer surface of the stamping part with a clean brush along the same direction. Put the pressed parts coated with oil under strong light for inspection. It is recommended to erect the pressed parts on the vehicle body. With this method, it is easy to find tiny pockmarks, hollows and ripples on the stamping parts.

6. Fixture detection: put the stamping parts into the fixture and test the stamping parts according to the operating requirements of the fixture instruction.