Shanghai sheet metal processing requirements Daquan:

1. Parts remove oxide scale.

2. There should be no scratches, scratches, etc. on the surface of the part to damage the surface of the part.

3. Remove the burr flash.

4. After quenching and tempering treatment, 28HRC~32HRC.

5. The parts are subjected to high frequency quenching, tempered at 350~370 °C, 40HRC~45HRC.

6. Carburizing depth 0.3mm

7. Perform high temperature aging treatment.

8. Unfilled shape tolerances shall comply with GB1184-2000.

9. Unmarked dimensional tolerances should be in accordance with BG/T1804-m

10. The casting tolerance band is symmetrical to the basic size configuration of the blank casting

11. Unfilled radius R5

12. The uninterrupted angle is 2 × 45 ° C

13. The sharp angle is blunt.