The dacromet-plated surface was first born in the late 1950s. In the cold season in America and Europe, the heavy snowfall on the road seriously restricted the normal driving of cars. We sprinkled salt on the road to reduce the freezing point temperature to improve road flow problems,
Unexpectedly, the chloride ions in the industrial salt encroached on the steel structure, and the vehicle was seriously damaged, and a serious situation appeared. Some developed country researchers developed mainly metal zinc flakes and added aluminum flakes, chromium A highly dispersed water-soluble material made of acid and deionized water. The material is dipped on the metal structure, and is repeatedly coated and baked in a closed circuit to form a thin coating. The Dacromet surface coating successfully resists chloride ions The anti-corrosion technology has entered a new level, which has changed the shortcoming of the traditional anti-corrosion process.
Therefore, Dacromet technology was adopted by the military of some developed countries, and it became an anti-corrosion military technology. In the 1970s, the NDS company of this country introduced Dacromet-plated surface technology from this company in some developed countries, and bought out it. The right to use it in the Asia-Pacific region, and hold shares in this company in some developed countries. The island country has a large tonnage of steel corrosion every year, so it pays special attention to anti-corrosion technology. After the Dacromet-plated surface technology has been improved by the country, it has The country has developed more than a hundred coating factories and more than a few chemical companies very quickly, and many other countries have also introduced Dacromet-plated surface technology one after another.
Our country began to introduce dacromet-plated surface technology from the country more than ten years ago. At first, it was only used in the national defense industry and localized vehicle components, and gradually developed into electric power, construction engineering, ocean engineering, household appliances, 5 gold and Standard parts, railways, bridges, tunnels, highway guardrails, petrochemical industry, bioengineering, medical equipment and other fields.