Common metal processing processes mainly include cutting, welding, forging, stamping, casting and surface treatment. Cutting uses tools to remove material to achieve the desired shape and size; welding connects parts by heating and melting metal; forging uses high temperature and pressure to change the shape of metal; stamping uses molds to shape sheet metal; casting uses liquid to form The metal is poured into the mold and cooled to form; surface treatment includes spraying, electroplating, etc., aiming to improve the corrosion resistance and aesthetics of the metal.
① Planing processing: It is a cutting processing method that uses a planer to make horizontal and relative linear motion on the workpiece. It is mainly used for the shape processing of parts.
②Grinding processing: Grinding refers to a processing method that uses abrasives and abrasive tools to remove excess material from the workpiece. Grinding is one of the most widely used cutting methods.
③Selective laser melting: In a tank covered with metal powder, the computer controls a high-power carbon dioxide laser to selectively scan the surface of the metal powder. Wherever the laser hits, the metal powder on the surface is completely melted and bonded together, while the areas not hit by the laser still remain in the powder state. The entire process needs to be carried out in a sealed chamber filled with inert gas.
④Selective laser sintering: The SLS method uses infrared laser as energy source, and the modeling materials used are mostly powder materials. During processing, the powder is first preheated to a temperature slightly lower than its melting point, and then the powder is spread flat under the action of a scraping stick; the laser beam is selectively sintered according to the layered cross-section information under computer control, and one layer is completed. Then proceed to the next layer of sintering. After all sintering is completed, remove the excess powder to obtain a sintered part.
⑤Metal deposition: It is somewhat similar to the "cream-squeezing" type of fused deposition, but metal powder is sprayed out. While the nozzle sprays the metal powder material, it also increases the power of the laser and the inert gas protection.
⑥Roll forming: This method uses a set of continuous stands to roll stainless steel into complex shapes. Each machined roll profile continuously deforms the metal until the desired final shape is achieved.
⑦Die forging: refers to the forging method that uses a mold to shape the blank on special die forging equipment to obtain forgings. The forgings produced by this method have precise dimensions, smaller machining allowances, and higher productivity than complex structures.
⑧Die-cutting: This is the blanking process. The film formed in the previous process is positioned on the male die of the die-cutting die. The excess material is removed by closing the die, retaining the 3D shape of the product and matching the mold cavity.
⑨Knife mold: The knife mold blanking process positions the film panel or circuit on the bottom plate, fixes the knife mold on the machine template, and uses the force provided by the machine's downward pressure to control the material and cut it off.
⑩Metal injection: Molding is a new powder metallurgy near-net forming technology derived from the plastic injection molding industry. This new powder metallurgy forming method is called metal injection molding.
