Environmental protection process for metal surface treatment

Environmental protection process for metal surface treatment:

Dalian metal surface treatment generally includes electroplating, thermal spraying and laser cladding, in which electroplating has a more serious impact on the environment, followed by thermal spraying, and the surface treatment after laser cladding is a difficult problem; A layer of hardened layer is directly generated on the surface. Z is an environmentally friendly form. Hawker energy technology does not remove materials and dust.

Sand blasting treatment can be arbitrarily selected between different roughness, but other processes cannot achieve this. Manual grinding can make rough surface, but the speed is too slow. Chemical solvent cleaning is too smooth, which is not conducive to coating bonding. The parts are not completely degreased or stored improperly during machining, and the dust falls on the surface. After being put for a long time, the dust and grease stick, which is difficult to remove and form small oil spots, and bubbles remain on it during plating; The parts are not cleaned thoroughly or the pickling time is too long, resulting in excessive corrosion and carbon spots scattered on the surface. During plating, the coating can only be deposited around non-conductive particles to form pinholes.

Dalian metal surface treatment is suitable for black metal electrodeposition paint degreasing. No. 37086 black metal derusting, degreasing, passivation and phosphating treatment solution technology contains degreasing agent, derusting agent, passivating agent (dichromate), phosphating agent (soluble phosphate) and other components. Derusting, degreasing, passivation and phosphating are carried out simultaneously in the same tank solution. The black oxide film on the surface can be removed by chemical polishing, which meets the requirements of smoothness and decoration. The treatment fluid includes degreasing fluid and etching fluid.

It is mainly used for washing various mechanical parts, replacing gasoline, kerosene, diesel and other organic solvents to remove various oily pollutants. It is safe to use, without secondary pollution, can save energy and improve working conditions. It is suitable for various cleaning forms such as soaking, spraying, ultrasonic, oscillation and so on. Some metals are also electroplated. For example, gold plating, nickel plating and chromium plating meet special requirements (such as different color effects or special applications).

Dalian metal surface treatment, a new environmental friendly metal surface treatment process, and the alloy catalytic solution technology replace the traditional electroplating, which has no harmful emission and pollution. Workers engaged in long-term work will not produce occupational diseases. Since biological phytate will not pollute the environment, it can fundamentally reverse the pollution caused by serious excessive sewage discharge during gold surface treatment in the machinery industry. It can improve the surface hardness, wear resistance, finish and corrosion resistance of parts, improve the competitiveness of mechanical products in the international market, reduce the cost of product surface treatment and obtain good economic benefits.