JIS G3131 SPHC steel coil surface treatment method

The surface treatment methods of JIS G3131 SPHC steel coil include the following details:

1. Pickling: Use acid (usually hydrochloric acid or sulfuric acid) to clean the surface of JIS G3131 SPHC steel coil to remove oxide scale and other impurities, making the surface smoother and cleaner, and improving the adhesion of subsequent coating or processing processes. sex.

2. Phosphating: A layer of phosphide film is formed on the surface of JIS G3131 SPHC steel coil, which can improve corrosion resistance, increase lubricity, and improve the adhesion and corrosion resistance of paint or coating.

3. Paint Coating: Spray anti-rust or decorative paint on the surface of JIS G3131 SPHC steel coil to prevent corrosion and improve aesthetics. Different types of coatings can be selected according to specific needs.

4. Galvanizing: Through methods such as hot-dip galvanizing or electro-galvanizing, a layer of zinc is formed on the surface of the steel coil to improve corrosion resistance. It is often used in outdoor structures and metal products.

5. Oil Coating: A protective oil film is formed on the surface of JIS G3131 SPHC steel coil to prevent oxidation, reduce friction, and improve appearance quality and cutting processability.

These surface treatments are selected according to specific requirements and application scenarios, and can be applied individually or in combination to improve the anti-corrosion performance, appearance quality, and applicability of JIS G3131 SPHC steel coil.

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