Polishing Edge Carbide Core Pin-HG

Polishing core pins involves techniques like draw polishing to achieve a uniform, smooth surface finish with a low Ra roughness, which helps eject molded parts smoothly and reduces soldering issues. Methods include using a surface roughness gauge to certify quality, specialized polishing with machine-finished uniform draws, and even techniques like "peening" with a ball bearing and hammer for minor adjustments.

Polishing can improve

1. demolding performance: The polished surface of the pin ensures that the molded part can be easily demolded without damage. 
2. Reduce welding: Finer surface treatment can effectively reduce the adhesion of molten materials and prevent components from sticking to the pins (i.e. welding). 
3. Enhanced durability: The polished and possibly coated surface can improve the wear resistance of the pin and extend its service life. 
4. Better product quality: Ultimately, high-quality insert surfaces ensure better and more stable quality of mold products.