Professional Handling And Processing Techniques For Automotive Castings

When castings need repair, joining, or surface treatment, specific process requirements must be followed.

Welding Operation Key Points: When performing laser welding on die-cast parts such as aluminum alloys, special attention must be paid to their high reflectivity and thermal conductivity. The laser power density should be increased and welding completed in a very short time to overcome energy loss caused by reflection, ensuring welding quality.

Surface Treatment Process: To improve surface quality or prepare for coating, methods such as grinding and polishing, or sandblasting cleaning can be used to remove burrs and oxide scale. Sandblasting also roughens the surface, enhancing the adhesion of coatings.

Shot Peening Strengthening Application: Through shot peening cleaning, residual compressive stress can be generated on the surface of the casting, effectively improving its surface strength and fatigue resistance.