Tag Surface finish

Machining surface finish is to meet the requirements of increasing product corrosion resistance, wear resistance, decoration and other functions in the process of manufacturing products, and to deburr, degrease, remove welding spots, descale and clean the surface of workpiece materials. .

With the rapid development of modern mechanical processing technology, many advanced mechanical processing technology methods have gradually emerged. What are the surface treatment processes of machining? What kind of surface treatment process can achieve the expected results at low cost, in batches, and save time and effort? It is urgently sought and solved by major production industries.

Commonly used machining parts are cast iron, steel, and non-standard mechanically designed low-carbon steel, stainless steel, white copper, brass and other non-ferrous metal alloys that require special mechanical design to solve problems. In addition to metal materials, they also include plastics, Ceramics, rubber, leather, cotton silk and other non-metallic materials. The characteristics of the materials are different, and the manufacturing process is also very different.

The surface treatment process of mechanical processing can be divided into metal surface treatment and non-metal surface treatment. The non-metal surface treatment process uses sandpaper to remove surface oil stains, plasticizers, release agents, etc. Mechanical treatment; remove surface stickies with electric field, flame And other physical methods; there are also flame treatment, discharge treatment and plasma discharge treatment.

The metal surface treatment process is:

① anodic oxidation: through the electrochemical principle, an aluminum oxide film is formed on the surface of aluminum and aluminum alloy, which is suitable for the surface treatment of aluminum and aluminum alloy;

② electrophoresis: the treatment method is simple, pretreatment-electrophoresis-drying is completed, Suitable for stainless steel and aluminum alloy materials;

③PVD vacuum plating: use the technology of depositing thin films in the logistics process, suitable for cermet coating;

④Spray powder: apply powder coating to the surface of the workpiece through powder spraying equipment, often used in architectural furniture products and heat sinks;

⑤Electroplating: improve the wear resistance and aesthetics of the workpiece by attaching a metal film on the metal surface;

⑥Polishing: mechanical polishing, chemical polishing, electrolytic polishing, ultrasonic polishing, fluid polishing and magnetic grinding and polishing, using mechanical, chemical or electrochemical effects , reduce the surface roughness of the workpiece.

In the above metal surface treatment and polishing process, the magnetic grinding and polishing method not only has high polishing efficiency and good grinding effect, but also is easy to operate. The materials that can be polished include: gold, silver, copper, aluminum, zinc, magnesium, stainless steel and other metals For precision small parts, it should be noted that iron is a magnetic material, which cannot achieve the expected cleaning effect.

This is the summary of the small series about the surface treatment process of machining. In summary, the surface treatment of machining mainly depends on the material properties, technical operation of polishing equipment and the use of parts.