Chromating is a passivation film technology that generates anti-corrosion, wear-resistant, and aesthetically pleasing effects on metal surfaces. It covers the metal surface with a yellow or green passivation layer with specific good properties, thereby enhancing anti-corrosion performance, extending service life, and improving overall decorative performance.
Chromating is mainly divided into two methods: chemical conversion and electrochemistry. Among them, the most common is the chemical conversion method with hexavalent Chromate and dichromate as the main body.
The principle is to react Hexavalent chromium ion with metal to form a dense oxide passivation layer (such as CrO3), and then form a complete yellow or green passivation film to improve the surface performance of metal. These colors are also unique, due to different combinations of time and concentration controlled by computers, resulting in flexible choices by producers.
Chromating is widely used for surface treatment of various metal products, especially for lightweight metal products such as aluminum and aluminum alloys. It is commonly used to avoid damage to the surface of steel by acid, alkali, brine, humidity, and other environments, improve its corrosion resistance and service life. It has important applications in fields such as aviation, automobiles, architecture, precision instruments, etc., such as aircraft structures and engine components, automotive parts, and so on.
Chromating is a passivation film technology that generates anti-corrosion, wear-resistant, and aesthetically pleasing effects on metal surfaces. It covers the metal surface with a yellow or green passivation layer with specific good properties, thereby enhancing anti-corrosion performance, extending service life, and improving overall decorative performance.
Chromating is mainly divided into two methods: chemical conversion and electrochemistry. Among them, the most common is the chemical conversion method with hexavalent Chromate and dichromate as the main body.
The principle is to react Hexavalent chromium ion with metal to form a dense oxide passivation layer (such as CrO3), and then form a complete yellow or green passivation film to improve the surface performance of metal. These colors are also unique, due to different combinations of time and concentration controlled by computers, resulting in flexible choices by producers.
Chromating is widely used for surface treatment of various metal products, especially for lightweight metal products such as aluminum and aluminum alloys. It is commonly used to avoid damage to the surface of steel by acid, alkali, brine, humidity, and other environments, improve its corrosion resistance and service life. It has important applications in fields such as aviation, automobiles, architecture, precision instruments, etc., such as aircraft structures and engine components, automotive parts, and so on.
