The surface treatment of Custom Sheet Metal Weldments can not only improve its appearance quality, but also enhance its corrosion resistance, wear resistance and service life.1. Polishing and grindingMechanical polishing: Use a polishing machine and a polishing wheel to polish the surface of the welded parts to remove the oxide scale, welding slag and defects on the surface, making the surface smooth and flat.Manual grinding: Manual grinding with sandpaper and grinding wheel, gradually refining the abrasive grain size until the required finish is achieved.Advantages: Improve the surface finish and beauty, and make the welded parts present a mirror-like luster.2. SandblastingPrinciple: Use high-speed sprayed sand particles to impact the surface of the welded parts to remove oxide scale, rust and dirt, and produce a uniform rough surface.Advantages: Increase the surface roughness, facilitate the subsequent coating adhesion, and improve the surface hardness and wear resistance.Application: Suitable for welded parts with high surface roughness, anti-slip and decorative requirements.
3. Chemical treatmentPickling: Use acidic solution to remove the oxide scale and rust on the surface of the welded parts to make the surface clean.Passivation treatment: Passivation treatment is carried out after pickling, and a passivating agent is used to form a dense oxide film on the surface to improve corrosion resistance.Advantages: Clean the surface, improve corrosion resistance, and is suitable for welded parts that require high corrosion resistance.4. Electroplating treatmentElectroplating metal: A layer of metal is plated on the surface of the welded parts through an electrolytic process, such as chrome plating, nickel plating, zinc plating, etc.Principle: Using the principle of electrolysis, metal ions are reduced and deposited on the surface of the welded parts in the electroplating tank.Advantages: Increase surface hardness, wear resistance and corrosion resistance, while improving appearance quality.5. Coating treatmentSpraying: Use a spray gun to evenly spray the paint on the surface of the welded parts to form a uniform coating.Powder coating: Use electrostatic spraying technology to adsorb powder coating on the surface of the welded parts and form a coating through high-temperature curing.Advantages: Provides a wide range of color options, enhances corrosion resistance and decorative effects, and is suitable for welds with aesthetic and protective requirements.6. AnodizingPrinciple: Generates a dense oxide film on the surface of aluminum alloy welds through an electrolytic process to increase its corrosion resistance and hardness.Advantages: Improves surface hardness and corrosion resistance, increases surface color options, such as black, gold, etc., and improves aesthetics.7. Laser processingLaser marking: Use lasers to engrave permanent marks on the surface of welds, such as text, patterns, etc.Laser cleaning: Use laser energy to remove surface oxide scale and contaminants and clean the surface.
Advantages: Provides permanent markings, cleans the surface, and improves appearance quality.
Through the above surface treatment methods, Custom Sheet Metal Weldments can not only improve its corrosion resistance, wear resistance and service life, but also give off a different brilliance to meet the aesthetic and functional requirements in different application scenarios. Choosing the right surface treatment method can significantly improve the overall quality and market competitiveness of welds.
