How to ensure the environmental protection and safety of zinc alloy steel passivator
How to ensure the environmental protection and safety of zinc alloy steel passivator
To ensure the environmental protection and safety of zinc alloy steel passivator, we can mainly start from the following aspects:
1. ** Use chromium-free passivators ** : Traditional chromate passivators contain hexavalent chromium, which is a substance harmful to the human body and the environment. Therefore, chromium-free passivators should be preferred to reduce the harm to the environment and human health.
2. ** Optimize passivation process ** : Through technological innovation, improve the passivation process, such as the use of inorganic salt organic acid collaborative passivation technology, the use of sodium molybdate and sodium phosphate as the main salt of the passivation solution, and the combination of organic acid to form a uniform and dense passivation film, improve corrosion resistance, while maintaining environmental protection.
3. ** Strict control of passivation film quality ** : passivation film should not be too thick, should have good density, to ensure the smooth progress of subsequent operations, and to avoid the deterioration of corrosion resistance caused by passivation film quality problems.
4. ** Pre-treatment and post-treatment ** : Before passivation treatment, it is necessary to thoroughly clean the surface of zinc alloy to remove impurities such as oil and rust, and ensure full contact between the passivation agent and the metal matrix. After passivation treatment, it is also necessary to carry out appropriate cleaning and drying to remove residues and ensure the performance of the passivation film.
5. ** Choose the right passivation agent ** : When choosing the passivation agent, its passivation effect, environmental protection, applicability and cost should be considered. Passivation agent should be able to form uniform, dense, stable passivation film on the surface of zinc alloy, and non-toxic, tasteless, pollution-free, in line with environmental protection requirements.
6. ** Regular inspection and maintenance ** : For zinc alloy steel that has been passivated, regular inspection and maintenance are required to ensure the durability and stability of its anti-corrosion effect.
7. ** Follow safe operating procedures ** : In the process of using passivating agents, direct contact should be avoided, and appropriate personal protective measures should be taken. At the same time, passivating agents should be stored in a safe place, away from direct sunlight and high temperature environments.
The above measures can improve the corrosion resistance and service life of zinc alloy steel while ensuring the environmental protection and safety of the passivator.
