There are mainly 16 kinds of surface treatment technology for industrial production personnel, which are: polishing, sandblasting, polishing, spray painting, powder spraying, UV spray painting, packaging printing, laser marking, electroplating process, air oxidation, passivation treatment, blackening, metal drawing, phosphating treatment, water transfer technology and hot stamping.

The following is a detailed explanation of these surface processing processes

1. Laser marking: Laser marking, also known as laser marking, is a process of surface treatment using optical principles. For example, make a computer keyboard, above the blue green, bright red, dark gray, fitness is white, laser marking, first oil pump, blue font, green font, red font, gray word spray the corresponding color, so there will be blue health, green keys and other keys, and then the whole spray a layer of white, this is a whole white computer keyboard, green and blue packaging in the following. Then using the laser device and the function key diagram submitted by the product designer, carve the above white oil and render the function keys such as green and blue.

Limitations of laser marking:

(1) Laser marking approval :AL is 0.1mm, plastic spray coating: 0.2-0.3mm. Iron and other metal materials reach 00.08mm

(2) laser marking limit area is :100*100mm, beyond 100*100mm laser marking must be pieced together, docking position is not good, docking is obvious

(3) Milky white and nearly pure white color can not be carved, oblique laser marks are easy to deform

2. Electroplating process: Whether the electroplating process makes the metal material adhere to the material surface according to the current, the main purpose is to constantly change the characteristics or specifications of the material surface. Electroplating process is generally divided into wet electroplating process and dry electroplating process. Wet type is usually referred to as water plating, dry type is usually referred to as vacuum plating. Water plating refers to changing the coated metal and attaching it to the surface of electroplated tin according to the electrode method, while vacuum plating uses high pressure and high voltage to vaporize the coated metal into positive ions in the vacuum pump environment, and then evaporates to the surface of electroplated tin. Water plating has good adhesion, no other solution is needed in the middle and late stages, vacuum plating has weak adhesion, generally need to do PU or UV on the surface, PC can not be electroplating process. Coating parts can not be water plated, only vacuum plating. Water plating color is simple, common water plating stainless steel, nickel, gold and so on. And electroplating spraying can solve the problem of colorful. Before water plating, the actual effect of the workpiece appearance must be polished to 1500-2000 sanding sandpaper, and then polished before water plating. So water plating work is generally very expensive, vacuum plating polishing effect can be almost appropriate.

Industrial producers hand plate production

3. Air oxidation: metal passivation treatment is a defensive oxide film of metal surface and oxygen or oxide to avoid electrochemical corrosion. Air oxidation is divided into chemical oxidation and electrochemical oxidation (i.e. anodic oxidation treatment).

(1) The oxide film formed by chemical oxidation is thin, the thickness is about 0.3-4vm, porous structure, good absorption level, soft and not wear-resistant, good electrical conductivity, suitable for the interception of the stipulated places, can be painted with a variety of colors, surface paint, can effectively improve the corrosion resistance of metal aluminum and decorative art.

(2) The oxide film formed by anodic oxidation treatment is thicker, generally 5-20vm, hard anodic oxidation film thickness up to 60-25000vm, high hardness, good wear resistance, good chemical resistance, good corrosion resistance, good adhesion level, good insulation performance, strong heat insulation performance, can be used in a variety of colors.

Generally speaking, after chemical oxidation of aluminum and aluminum alloy, especially after anodic oxidation process, the oxide film formed on the surface has good safety protection, decorative design and other characteristics, used in aviation, electrical equipment, electronic equipment, mechanical equipment and light industry production.