What is Metal Surface Treatment?

Metal surface treatment is to form a coating with some or more special properties on the surface of metal materials through physical or chemical methods. Surface treatment can improve the appearance, texture, function, and other aspects of the product’s performance. Metal material is inseparable from surface treatment. Today I will share the metal surface treatment method.

metal surface treatment

How many methods for metal surface treatment?

1. Electroplating

The purpose of electroplating is to form a metal coating on the materials’ surface and change the surface properties or dimensions of the material. Electroplating can enhance the corrosion resistance of metal, increase hardness, prevent wear, improve conductivity, lubricity, and heat resistance, and make the surface beautiful.

2. Galvanizing

Galvanizing refers to a surface treatment technology that coats the surface of metals with a coating of zinc for aesthetics and rust prevention. The main method the manufacturer used is hot dip galvanizing.

3. Oxidative blackening

The principle of blackening on the surface of metal parts is to rapidly oxidize the surface of metal parts to form a dense oxide film layer and improve the anti-rust ability of metal parts.

4. Painting

Painting is to “paint” the metal surface with color, changing its single metal color and replacing it with colorful colors to meet the different needs of different industries.

5. Sandblasting

Sandblasting uses compressed air as power to form a high-speed jet beam to spray the material onto the surface of the workpiece at high speed. So that makes the surface and shape of the workpiece to be changed. It can make the surface of the workpiece obtain cleanliness and different roughness, which improves the mechanical properties of the metal part, improves the fatigue resistance of the workpiece increases the adhesion between it and the coating extends the durability of the coating film, and is also beneficial to the leveling and decoration of the coating.

6. Passivation

Passivation is due to the interaction between metal and oxidizing properties, which produces a passivation film with the characteristics of thin, dense, good covering performance, and firmly adsorbed on the metal surface. It plays the role of separating the metal from the corrosive medium so that the metal stops dissolving and forms a passive state to prevent corrosion.

7. Polishing

Polishing refers to the modification of the metal surface using flexible polishing tools and abrasive particles or another polishing tool. Polishing cannot improve the dimensional accuracy or geometric shape accuracy of the part but is intended to obtain a smooth surface or mirror gloss. Sometimes it is also used to eliminate matting gloss. Manufacturer usually uses the polishing wheel as a polishing tool.

metal surface treatment

The functions of metal surface treatment:

1. Improve surface corrosion resistance and wear resistance, eliminate or repair surface changes and damage to materials.
2. Make the surfaces of the ordinary materials with special functions。
3. It can save energy and reduce costs.

The metal surface treatment service at DMTC:

High-quality metal surface treatment is crucial to the production of metal parts. Not only is it beneficial for the end-user, but it also offers several advantages to the manufacturer. However, without the right approach, both manufacturers and end users suffer. All metal surface treatment methods mentioned in this article can be provided at DMTC. DMTC can provide high-quality metal surface treatment services at very competitive prices. We are committed to meeting the surface treatment needs of various metal parts and conduct 100% inspection on delivery to ensure quality. Send your drawing to us and get a quote now!

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