Do you know CNC machining part several kinds of surface treatment
Do you know CNC machining part several kinds of surface treatment.
CNC machining is a way to carry out precision machining with computer intelligent manipulation.
Sometimes CNC machining completes the corresponding surface processing according to the specific situation, so let's look at the surface treatment of cnc precision machining there are several ways.
1. Anodic oxidation
Anodic oxidation have Type I Type II and Type III, Anodizing is an electrolytic passivation process. It can be to increase the thickness of natural oxide layer on the surface of aluminum parts.
The main function is to increase corrosion resistance, wear resistance, adhesion to paint and primer, etc
Usually this kinds surface treatment is suitable for CNC machining Aluminum alloy parts and CNC machining titanium alloy parts.
Sometimes if the anodizing can not covered the cutting marks, We will be sandblasting to cover part surface.
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2. Electroplating
Electroplating is the process of plating a thin layer of other metals or alloys on some metal surfaces using the principle of electrolysis. It is the process of using electrolysis to attach a layer of metal film to the surface of metal or other material parts so as to prevent metal oxidation.
Commonly the CNC machining parts its surface treatment used galvanized, nickel, chromium, copper, tin.But some client also will require plating gold and silver on the part surface. in this case the cost will be high.
3. Powder coating
Powder coating involves melting dry plastic powder onto metal to produce a textured, dull, or glossy coating. It applies powder to metal in an electrostatic manner and then cures it with heat, causing it to flow and form a hard "skin".
4. Passivation
Passivation, also known as chromate treatment, it is a pickling process, through soaking or ultrasonic cleaning can remove the surface oil dirt, rust stains, oxides, through the chemical reaction of passivation liquid, to prevent corrosion and prolong the effect of rust. Passivation film color will change with different materials, passivation will not increase the thickness of the product, do not worry about it will affect the accuracy of the product.
5. Wiredrawing
Wiredrawing is a surface treatment method that forms lines on the surface of the workpiece through flat pressing sand belt and non-woven roller brush, and plays a decorative effect. Surface brushed processing can reflect the texture of metal materials, in modern life is more and more popular, widely used in mobile phones, computers, monitors, furniture, electrical appliances and other shell.
6. Polishing
Polishing is to make the product to achieve beautiful, transparent and protect the surface effect, polishing transparent is your very good choice, hardware product polishing is divided into manual polishing polishing, mechanical polishing, electrolytic polishing. Electrolytic polishing can be used to replace heavy mechanical polishing, especially for parts with complex shapes and parts that are difficult to be processed by hand polishing or mechanical methods. Electrolytic polishing is commonly used for steel, aluminum, copper and other parts.
Above several kinds surface treatmetn just is common surface treatment.
Welcome to inquiry if you have custom the CNC project.
