Mechanical processing performance for custom stainless steel parts

Stainless steel has good mechanical processing performance:

• High Hardness: Stainless steel has high hardness, usually requiring a large cutting force for processing. This also leads to higher requirements for the wear resistance of processing tools during stainless steel processing.

• Good Chip Formation: Stainless steel has good chip formation, which can produce good chip morphology and facilitate chip discharge.

• Poor Thermal Cutting Performance: Stainless steel has low thermal conductivity and a high thermal expansion coefficient, making it prone to thermal deformation and work hardening during processing. Therefore, it is necessary to control the processing temperature and speed in stainless steel machining and avoid excessive heat accumulation leading to irreversible deformation.

• Good Plasticity: Stainless steel has good plasticity and can be subjected to various cold and hot deformation processes such as stretching, compression, and bending.

• Relatively Difficult in Mechanical Processing: Due to the high hardness and toughness of stainless steel, as well as its good cutting performance, its mechanical processing is relatively difficult. It is necessary to choose appropriate cutting parameters, tools, and coolant conditions to ensure processing quality and tool life.

Stainless steel can be processed by various surface treatments to enhance performance and appearance. Common surface treatment methods include:

1. Polishing:

   • Improves surface smoothness and aesthetics.
   • Removes surface defects and oxidation layers.

2. Brushing:

   • Creates a uniform linear texture.
   • Enhances appearance and hides surface imperfections.

3. Electroplating:

   • Increases corrosion resistance and wear resistance.
   • Adds surface layers of different metals, such as nickel and chromium.

4. Passivation:

   • Enhances corrosion resistance.
   • Removes surface free iron and other impurities through chemical treatment.

5. Sandblasting:

   • Cleans and removes surface oxidation layers.
   • Produces a uniform surface texture.

6. Chemical Treatment:

   • Processes like pickling remove oxidation layers and impurities.
   • Improves surface cleanliness.

7. Anodizing:

   • Increases corrosion resistance and wear resistance (not commonly used for stainless steel but can achieve similar effects through electrochemical treatment).

8. Thermal Spraying:

   • Enhances surface wear resistance and oxidation resistance.
   • Suitable for repairing worn parts.

9. Electropolishing:

   • Removes surface material through an electrochemical process.
   • Improves surface smoothness and corrosion resistance.

10. Coating:

    • Applies organic or inorganic coatings to improve surface properties.
    • Increases corrosion resistance, wear resistance, or provides decorative effects.