What is Metal Treatment?

The process of using modern physics, chemistry, metallurgy, and heat treatment to change the surface condition and properties of parts to optimize the combination with the core material to achieve the expected performance requirements is called the metal treatment process.

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The functions of metal treatment:

1. Improve surface corrosion resistance and wear resistance, slow down, eliminate, and repair changes and damage on the material surface.
2. Make ordinary materials’ surfaces with special functions.
3. Save energy, reduce costs, and protect the environment.

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The classifications of the metal treatment process:

1. Techniques for modifying surface properties: Through physical and chemical methods, to change the morphology, phase composition, microstructure, defect state, and stress state of the metal material surface to obtain the surface with the required performance. The chemical composition of the material surface remains unchanged. Such as surface hardening, laser surface strengthening, shot blasting, rolling and polishing, etc.
2. Alloying technology for surface: A surface treatment process that uses physical methods to add material to enter the original metal material to form an alloying layer to obtain the required performance, such as heat treatment.
3. Conversion coating technology: A surface treatment process that uses chemical methods to make the material react chemically with the substrate to form a conversion coating to obtain the required performance. Such as blackening and phosphating, anodizing.
4. Coating technology: Through physical and chemical methods, the added materials are plated or coated on the surface of the part to obtain the required performance. The substrate is not influenced by the coating. Such as thermal spraying, vacuum coating, and electroplating.

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The process of metal treatment

The process for metal treatment varies depending on the type of metal and the treatment required. Here is a basic process:
1. Metal Cleaning: the first step of metal treatment is metal cleaning. The metal surface needs to be cleaned to remove any grease, dirt, or impurities. This can be done by wiping, washing, or sandblasting.
2. Heat Treatment: This step is done to change the hardness or strength of the metal. This can be done by heating the metal at high temperatures and subsequently cooling it.
3. Mechanical treatment: This step uses processes such as cutting, grinding, drilling, or milling to change the shape of the metal or remove excess.
4. Coating: If the metal needs to be protected from corrosion or contamination, it can be coated. This can be done by electroplating, spraying, or other surface coating techniques.
5. Welding or joining: If two or more metal parts need to be connected, techniques such as electric welding, gas welding, or laser welding can be used.
6. Surface preparation: This includes steps such as rust removal, polishing, grinding, or painting to improve the appearance and durability of the metal surface.

In addition, some other techniques such as vacuum heat treatment, nitriding, carburizing, and electrolytic cleaning can be used for different applications and requirements. During the processes of metal treatment, all correct operating procedures and safety precautions must be followed to ensure the safety of workers and the environment. The specific order of the processes may depend on the metal type, application, and requirements of the metal parts, it is recommended to check more details with DMTC.

Metal treatment is an important process for CNC machining and sheet metal service. DMTC can provide a complete set processes of for metal treatment after machining parts. A professional team and advanced equipment can provide high-quality services to customers in different industries. Contact us now and get a free quote!

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