Chromate conversion is a kind of chemical conversion coating. When we put metal parts into the acidic chemical solution(contains chromate), the metal surface will form a thin coating. This coating does not react with most things, thereby it can improving corrosion resistance of substrate and enhancing coating adhesion.

The Marking Dilemma

In manufacturing, part identification not only for appearance, but also for achieving specific functions such as traceability codes, safety labels, and branding, all of which impact the product lifecycle, compliance, and user experience. Therefore, we have to choose silkscreen or laser marking process from the cost, durability, material compatibility, and scalability, etc. Sometimes a small mistake of the marking can even lead to a rejected a batch of parts, supply chain delays and a 200% cost over. This blog teaches you how to choose between these two processes based on our factory data.

Why Grit Size Dictates Your Surface Finish

Grit size in abrasive blasting isn't just a number—it’s the primary lever controlling surface texture, fatigue resistance, and coating adhesion. Smaller grits (e.g., #220) deliver fine finishes but remove material slowly, while coarser grits (e.g., #60) aggressively shape edges yet risk dimensional inaccuracy. The physics is clear: finer particles increase surface contact points per square inch, enabling uniform peening and residual stress control. However, excessively fine grits (≤50µm) can cause agglomeration, leading to inconsistent impact energy distribution.