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5. Mechanical surface treatment
Mechanical surface treatment can improve the surface quality and performance of forgings, and common processes include:
Polishing: Using mechanical or chemical methods to make the surface smooth and improve aesthetics.
Drawing: Forming a uniform texture on the surface, commonly used for decorative parts.
Grinding: Removing surface defects, improving dimensional accuracy and surface smoothness.
6. Chemical surface treatment
Chemical surface treatment improves the surface properties of forgings through chemical reactions, and common processes include:
Passivation treatment: Form a dense oxide film on the surface to improve corrosion resistance, suitable for stainless steel forgings.
Phosphating treatment: forms a phosphate layer on the surface to improve corrosion resistance and lubricity, suitable for steel parts.
Acid washing: Remove surface oxide scale and rust, improve surface cleanliness.
7. Composite surface treatment
Composite surface treatment combined with various processes to further improve the comprehensive performance of forgings, such as:
Carburizing+quenching+shot blasting: improving surface hardness, wear resistance, and fatigue strength.
Nitriding+PVD coating: improves surface hardness, wear resistance, and corrosion resistance.
8. Selection criteria for surface treatment
Choosing the appropriate surface treatment process requires consideration of the following factors:
Material type: Different materials are suitable for different surface treatment processes.
The usage environment, such as high temperature, corrosion, wear, etc., has different requirements for surface treatment.
Performance requirements: such as hardness, wear resistance, corrosion resistance, fatigue strength, etc.
Cost and Efficiency: Taking into account both process costs and production efficiency.
9. Future Development Trends of Surface Treatment
Environmentally friendly process: Developing surface treatment technologies with low pollution and energy consumption.
High performance coatings: Developing new coating materials such as nano coatings and multi-layer composite coatings.
Intelligent control: Introducing intelligent devices and technologies to improve the accuracy and consistency of surface treatment.
Multifunctional: Develop surface treatment processes that combine anti-corrosion, wear-resistant, lubrication, and other functions.
