他揉捏她两乳不停呻吟a片,亚洲国产成人精品无码区99,无码jk粉嫩小泬在线观看欧美,黑人上司粗大拔不出来电影

Hardware stamping molds are the main production tools for stamping processing. Developing correct maintenance workflows can help extend their service life and reduce production costs. Licao Precision Hardware Manufacturer has analyzed the following factors that are related to the durability of the mold.

Factors that affect the lifespan of hardware molds during metal stamping processing:

1. The size and uniformity of the gap between the concave and convex molds.

2. Processes used in mass production.

3. Integrity and precision of mold assembly.

4. The rationality of the stamping process.

5. The guiding accuracy of the mold.

6. The quality of the metal materials used in the stamping process.

7. Surface quality of concave convex molds.

8. Is the stamping die correctly installed on the press.

9. Quality of mold materials and heat treatment quality.

10. The accuracy of the press used.

11. The rationality of the mold structure.

12. Lubrication, maintenance, and upkeep of stampi