What are the commonly used surface treatments?

Surface treatment is the surface of the workpiece to clean, sweep, deburring, de-oiled, de-oxidized skin, etc., used to meet the corrosion resistance of the product, wear resistance, decoration or other special functional requirements. The surface treatment of metal castings are mainly mechanical polishing, chemical treatment, heat treatment, spraying and so on.

What are the common surface treatment processes?

The appearance of the processed workpiece is inseparable from the design, color, material and process, of which the surface treatment process is the most direct reflection of the product appearance. Surface treatment can enhance the product appearance, texture, function and other aspects of performance. Manufacturing and processing industry commonly used surface treatment methods are: plating, baking paint, silk screen, surface drawing, sandblasting, oxidation, polishing, laser engraving and so on.

Electroplating

Through chemical reaction, attach a layer of other metals to the surface of the material, used to increase the corrosion resistance of the metal, and can achieve a certain beautification of the appearance of the role of a commonly used surface treatment, such as: zinc plating, nickel plating and so on.

Spraying

Spraying is the most common surface treatment, whether plastic or hardware are applicable. Spraying generally includes spraying oil, spraying powder, etc., the most common is spraying oil. The paint used for spraying is commonly known as paint, which is composed of resin, pigment, solvent, and other additives. Plastic spraying generally has two coats of paint, the surface showing color is called the top coat, and the most surface transparent layer is called the protective paint.

Baking paint

Through spraying, high temperature baking and other ways, the surface of the material sprayed with a layer of various colors of paint, used to beautify the appearance, and can increase the corrosion resistance of the material. Generally there are two kinds of liquid baking paint and powder baking paint, of which powder baking paint is the most common. Baking paint surface is not conductive. There are EMC requirements of the area does not allow baking paint (baking paint products are generally reserved for spraying margin ...).

Printing

A process in which patterns are printed on the surface of plastic parts through pad printing, screen printing and transfer printing methods.

Surface Drawing

The material will be placed between the upper and lower rollers of the wire drawing machine, the rollers are attached to the abrasive belt, driven by the motor, so that the material through the upper and lower abrasive belts, pulling out a trace on the surface of the material, according to the different abrasive belts, the trace thickness is not the same, the main role is to beautify the appearance. Generally it is the aluminum material that is considered to use the brushed surface treatment.

Sandblasting

Through the sand blasting machine's wind force will sand particles to the surface of the workpiece, forming a layer of dense pits on the surface of the workpiece, the main role is to remove the dirt on the surface of the workpiece, increase the adhesion of the surface of the workpiece, and prepare for the subsequent surface treatment.

Oxidizing

Oxidize the metal on the surface of the workpiece to form a dense protective film on the surface of the workpiece to increase the corrosion resistance of the workpiece. Generally there are two ways of conductive oxidation and anodic oxidation, is a commonly used surface treatment, such as radiator surface anodic oxidation (can have different colors).

Polishing

Polishing refers to the use of mechanical, chemical or electrochemical effects, so that the surface roughness of the workpiece is reduced to obtain a bright, flat surface processing methods, is the use of polishing tools and abrasive particles or other polishing media on the surface of the workpiece to carry out the modification of processing. Polishing can not improve the dimensional accuracy or geometric precision of the workpiece, but to get a smooth surface or mirror luster for the purpose, sometimes also used to eliminate the luster (matte).

Laser engraving

Also called laser engraving or laser marking, it is a process of surface treatment using optical principles. It utilizes a high-intensity focused laser beam emitted by a laser at a focal point to oxidize the material and thus process it.

Etching

Usually referred to as etching, also known as photochemical etching, refers to the exposure of the plate, after developing, to be etched in the area of the removal of the protective film, in contact with the etching of chemical solutions to achieve the role of dissolution and corrosion, the formation of concave-convex or hollow molding effect.