What respiratory protective equipment is used for chrome plating on piston rods?

What respiratory protective equipment is used for chrome plating on piston rods?

For a long time, the surface treatment technology of piston rods in China has mainly relied on traditional chrome plating technology. Chromium plating can not only repair the size of the friction surface of piston rod parts, but also greatly improve the quality of the parts, especially the surface wear resistance. However, electroplating chromium on the piston rod will produce chromic acid, which is a highly corrosive substance that is irritating and corrosive. Exposure of workers to chromic acid during breathing can cause irritation to their skin, eyes, and upper respiratory mucosa. So protective measures should be taken for chrome plating.

What respiratory protective equipment is used for electroplating chromium on the piston rod? Changzhou chrome plating to tell you:

1. The hazards of metal electroplating mainly include respiratory system hazards and skin hazards. It is due to the low current efficiency during the electroplating process, which generates a large amount of gas waste gas. If not properly controlled and managed, the gas will carry out chromium acid droplets and scatter in the workplace, causing respiratory hazards; Additionally, when plating the upper and lower parts, there may be contact with the chromic acid plating solution, which can cause skin contact hazards due to the corrosive nature of chromic acid. Therefore, if considering the use of protective equipment based on hazard factors, the main ones are respiratory protective equipment and protective gloves.

2. From the perspective of its properties, chromic acid has a high boiling point and generally does not exist in gaseous form. Instead, due to the gas passing through the solution, it produces mist droplets (miss). Therefore, respiratory protective equipment should mainly be able to protect mist droplets rather than acid gas. 3M suggestion: At ten times the TLV, a dust mask that protects against chromium acid droplets can be used.

What are the functions of continuous electroplating?

1. Aesthetics (such as continuous gold plating, continuous silver plating, continuous nickel plating, etc.)

The metal after electroplating is usually more glossy than the material.

2. Anti corrosion (such as continuous nickel plating, continuous chromium plating, continuous galvanizing, etc.)

Usually, raw materials such as copper and iron are prone to oxidation in the air. Electroplating a layer of metal with strong oxidation resistance can improve its corrosion resistance.

3. Strong electroplating adhesion (such as continuous copper plating)

For metals with poor adhesion, a copper base is usually applied before electroplating to improve adhesion.

4. Enhance conductivity (such as continuous gold plating)

The conductivity of raw materials such as iron and phosphorous copper is usually below 20%, and connectors with low resistance requirements cannot meet the requirements. Therefore, high conductivity metals such as gold plating on the surface can reduce resistance.

5. Improve solderability (such as continuous tin plating, continuous gold plating, etc.)

Due to the poor adhesion of raw materials to tin, coating the surface with a certain thickness of tin and other substances can improve the weldability of the parts.

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