As a critical process in modern metalworking, surface treatment technology synergizes physical modification with chemical reactions to significantly enhance material conductivity and decorative texture while reinforcing fundamental properties such as corrosion resistance and wear resistance, achieving an organic integration of engineering value and aesthetic value. 

Industrial practices demonstrate that scientifically standardized surface treatment can extend component service life by 3-5 times and reduce lifecycle maintenance costs by over 30%, making it a core technical approach for improving quality and efficiency in modern manufacturing. 

Driven by increasingly stringent environmental regulations, novel green treatment processes—such as chromium-free passivation, plasma nitriding, and graphene composite coatings—are breaking through traditional technical bottlenecks and entering large-scale application phases, emerging as pivotal breakthroughs in the upgrading of the metalworking industry.