Explanation of the forming process, surface treatment and cutting process by mechanical dynamic drawing (B)
Metal forming
Die casting is a metal casting process that uses a mold cavity to apply high pressure to the molten metal. Molds are usually made of higher-strength alloys, and this process is somewhat similar to injection molding.
Sand mold casting is to use sand to make molds. Sand mold casting requires putting a finished part model or a wooden model (pattern) in the sand, and then filling it with sand on the weekend of the pattern. After the pattern is taken out of the box, the sand forms a mold. In order to take out the model before casting the metal, the casting mold should be made into two or more parts; in the process of making the casting mold, holes and vent holes for casting the metal into the casting mold must be left to synthesize the casting system. After pouring the metal liquid into the mold, keep it for an appropriate time until the metal solidifies. After the parts were taken out, the mold was destroyed, so a new mold must be made for each casting.
Stamping is a forming and processing method that relies on presses and molds to apply external force to plates, strips, pipes and profiles to cause plastic deformation or separation, so as to obtain workpieces (stamping parts) of the required shape and size.
Metal Injection Molding (MIM) is a new type of powder metallurgy near-net molding technology derived from the plastic injection molding industry. As we all know, plastic injection molding technology produces a variety of complex shapes at a low price. The strength of the product is not high. In order to improve its performance, metal or ceramic powder can be added to the plastic to obtain a product with higher strength and good wear resistance. In recent years, this idea has evolved to maximize the content of solid particles and completely remove the binder and densify the compact in the subsequent sintering process. This new powder metallurgy forming method is called metal injection molding.
Turning processing means that lathe processing is a part of mechanical processing. Lathe processing mainly uses a turning tool to turn a rotating workpiece. Lathes are mainly used to process shafts, discs, sleeves and other workpieces with rotating surfaces. They are the most widely used type of machine tool processing in machinery manufacturing and repair factories. Turning is a method of cutting the workpiece on the lathe by rotating the workpiece relative to the tool. The cutting energy of turning is mainly provided by the workpiece rather than the tool. Turning is the most basic and common cutting method, and it occupies a very important position in production. Turning is suitable for machining revolving surfaces. Most workpieces with revolving surfaces can be processed by turning methods, such as inner and outer cylindrical surfaces, inner and outer conical surfaces, end surfaces, grooves, threads, and revolving forming surfaces. The tools used are mainly turning tools.
Milling processing Milling is to fix the blank, and use a high-speed rotating milling cutter to move on the blank to cut out the required shapes and features. Traditional milling is mostly used to mill simple shapes/features such as contours and grooves. CNC milling machines can process complex shapes and features. The milling and boring machining center can perform three-axis or multi-axis milling and boring processing, which is used for processing, molds, inspection tools, molds, thin-walled complex curved surfaces, artificial prostheses, blades, etc. When selecting the content of CNC milling processing, the advantages and key functions of the CNC milling machine should be brought into full play.
Grinding refers to the processing method of using abrasives and abrasive tools to remove excess material on the workpiece. Grinding is one of the more widely used cutting methods
