The Differences between Dacromet and Galvanizing and Chromium Plating

author: YITECH

2025-02-21

There are significant differences between dacromet and galvanizing and chromium plating in many aspects.

There are significant differences between dacromet1 and galvanizing and chromium plating in many aspects. The following is a detailed comparison of the two:

1. Composition and composition

Dacromet:

Dacromet is a new type of anti-corrosion coating with zinc powder, aluminum powder, chromic acid and deionized water as the main components. It forms a protective layer of inorganic substances on the metal surface through a specific chemical reaction. The protective layer is composed of overlapping layers of flaky zinc and aluminum, and contains a passivation film formed by chromate.

Galvanizing and chromium plating:

Galvanizing is mainly to coat the zinc layer on the metal surface to form a corrosion-resistant zinc layer. Chromium plating is to plate a layer of chromium on the metal surface, which is usually used to enhance the beauty and hardness of the metal. In practical applications, galvanizing and chromium plating may refer to the simultaneous treatment of galvanizing and chromium plating, but more often refers to the chromium plating after galvanizing.

2. Appearance and aesthetics

Dacromet:

The metal surface treated with Dacromet is matte silver-gray, which is very beautiful and generous, and remains discolored for a long time.

Galvanizing and chromium plating:

The zinc coating itself is usually silver-white, but after chromium plating, a bright chromium layer will be formed, making the metal surface more beautiful and having a higher hardness.

3. Corrosion resistance

Dacro:

Dacromet coating has extremely high corrosion resistance and can keep the metal from corrosion for a long time in harsh environments. Its anti-corrosion performance is far better than traditional galvanizing treatment, and can even reach 7-10 times more than galvanizing.

Galvanizing and chromium plating:

The zinc coating itself has a certain corrosion resistance, but the corrosion resistance will be improved after chromium plating. However, its corrosion resistance is usually not as good as that of Dacromet coating.

4. Cost

Dacro:

Since the Dacromet process requires the use of specific chemicals and equipment and has high process requirements, its cost is usually high.

Galvanizing and chromium plating:

The cost of zinc plating and chromium plating is relatively low because the materials and processes used are relatively simple. However, it should be noted that if zinc plating and chromium plating are carried out at the same time, the cost will increase accordingly.

5. Environmental protection

Dacro:

There is almost no wastewater and waste gas emission during the Dacro treatment process, which meets environmental protection requirements and is considered to be one of the representatives of green industry.

Galvanizing and chromium plating:

Traditional galvanizing and chromium plating processes may produce certain pollutants such as wastewater and waste gas, which have a certain impact on the environment. However, with the continuous development of environmental protection technology, modern galvanizing and chromium plating processes are also gradually transforming towards environmental protection.

6. Application scope

Dacro:

Due to its excellent anti-corrosion performance and environmental protection, Dacro is widely used in automobiles, motorcycles, electrical appliances and electronics, infrastructure (such as subway tunnels, railways, bridges, etc.) and other industrial fields with high requirements for anti-corrosion performance.

Galvanizing and chromium plating:

The application range of galvanizing and chromium plating is also very wide, but it usually focuses more on improving the aesthetics and hardness of metals. For example, in the fields of construction, furniture, decorations, etc., galvanized and chromium-plated metal parts and decorations are very common.

DongGuan YiTai Electronic Technologies Co.,Ltd

DongGuan YiTai Electronic Technologies Co.,Ltd is a manufacturing service provider located in Dongguan, China.

YiTai specialized in CNC turning machining and sheet metal fabrication mainly. As a member of Hung Mou Group, we focus on the overseas marketing development. And based on our parent company’s manufacturing capability and resources, YiTai also expended machining services such as die casting, injection molding, aluminum profile extrusion, 3D printing, which are committed to providing customers with one-stop purchasing services and experience.

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