Does brass passivation affect the quality?

---Brass passivation treatment will change the appearance of the color, the treatment process and process control different effects;

---Passivation film thickness of about 0.1

---The thickness of passivation film is about 0.1~1 micron, the influence on product quality and size can be ignored. Copper internal organization, composition without any change, does not affect the use of the effect.

---Traditional copper passivation process using chromate as the main material, chromate is a highly toxic pollutant that can cause necrosis of kidney tissue and internal organs hemorrhagic lesions of the human body oral potassium dichromate lethal dose of about 3 grams of chromium on the respiratory tract has an irritating and corrosive effect on the skin after contact with the skin will cause dermatitis, eczema and ulcers. Some chromium compounds are recognized carcinogens and studies have shown that chromium compounds are mutagenic and cytogenetic. Although the chromate on the surface of the treated product is negligible, the environmental damage caused by the discharge of the passivation solution is serious. Now developed a number of environmentally friendly formulations purified liquid, in the anti-corrosion effect, color maintenance is still slightly inferior to the traditional chromate passivation treatment process.