Sand Casting, Investment Casting and Die Casting in China

Quality Control Process

Based ISO9001 quality system, we adopt many processes to control the quality of sand casting and investment casting process.

ISO9001 Cert

From the raw material to final casting products, we monitor everything of sand casting and investment casting process.

How to control the quality? The necessary facilities will be widely used in every program:

1. Raw Material Quality Control: Generally, we should be check the chemistry property as new raw material coming. The raw material cover pig iron, strap steel, coal and sand

Sand Sieving Machine for analysis sand Spectrum for chemistry analysis

2. Prodution quality control: the Working Instruction will be confirmed before production. Then we wil l care every process based programs. Especially the first sample must be checked carefully.

3. We will check the chemistry again when the products are finished. We also check the mechanical property, such as tensile strength, yield strength, elongation and hardness.

Machenical Property Teting,include tensile strength,yield strength and elongation.

4. To find the inner defect, we also use non-destructive method to check the products, such as ultrasonic testing, and radiographic inspection. To find the surface crack, the magnetic particle testing and penetrating testing are also choiced.

5. We will keep the records for about half years , then we will trace every batch.