It is generally not recommended to perform shot blasting treatment on lamp die castings, especially for lamps that require high surface quality, corrosion resistance, or structural strength. Here are the reasons and suggestions:
Potential issues without shot blasting treatment:
Insufficient surface roughness:
Shot blasting treatment can remove burrs, oxide scales, and other defects on the surface of die-casting parts, making the surface smoother and smoother. If this step is omitted, the surface of the lighting fixture may not be aesthetically pleasing, affecting the overall visual effect.
Poor corrosion resistance:
Shot blasting treatment can increase surface roughness, thereby improving the adhesion of subsequent coatings such as spray painting or electroplating. If directly coated, it may lead to insufficient adhesion of the coating, easy peeling, and thus affect the corrosion resistance and service life of the lamp.
Insufficient structural strength:
Shot blasting treatment will generate certain compressive stress on the surface, enhancing the mechanical strength of die-casting parts, especially for lighting components that need to withstand certain mechanical stress (such as brackets or shells), which is very important.
Impact on subsequent processing:
If the lighting fixtures require surface treatment (such as spraying, electroplating, or anodizing), shot blasting is a key step in ensuring the effectiveness of these processes. Without shot blasting treatment, the effectiveness of subsequent processes may be greatly reduced.
Can we skip shot blasting treatment?
In some cases, if the surface quality requirements of the lamp are not high and no subsequent coating treatment is needed, it may be considered to omit shot blasting treatment. For example:
However, even so, it is recommended to decide whether to omit shot blasting treatment based on specific application scenarios and customer requirements.
