Incoming Quality Control
Incoming Quality Control
According to the American MIL-STD-1916 sampling standard, the incoming goods are randomly inspected to ensure the consistency and correctness of the dimensions of the spare parts.
Surface Roughness Inspection:
Through the metalworking process, the vibration or the cutting marks of the machine tool makes the metal surface uneven which can be observed under the microscope. This condition will affect the following two points.
- Corrosion resistance of the surface: It is easy for corrosive gas or liquid to penetrate into the inner metal layer through the rough surface, causing surface corrosion or accelerated rusting.
- Sealing: The rough surface cannot be tightly coated. Therefore, gas or liquid could possibly seep from the contact surface.
