There are many ways to classify molds. In the past, they were classified according to mold structure, such as single-process molds and composite molds. According to the object of use, such as automobile panel die and motor die; Classification according to the properties of processing materials, such as molds for metal products and molds for nonmetal products; According to the classification of mold manufacturing materials, such as cemented carbide molds; According to the process properties, such as drawing die, powder metallurgy die, forging die, etc. Some of these classification methods can not fully reflect the structure, forming process characteristics and use functions of various molds. Therefore, a comprehensive classification method based on the technological properties and users of molds is adopted, and molds are divided into ten categories, as shown in table 1, and can be divided into several subcategories or varieties according to mold structure, materials, use functions and mold manufacturing methods. No. mold type, mold variety, forming process nature and applicable object 1 punching mold (punching mold) (punching mold with little or no waste, trimming, smooth punching, deep hole punching, etc. ), bending die, drawing die, single-process die (stamping, bending, drawing, forming, etc. ), compound die and progressive die; Stamping die for automobile panel, combined stamping die, stamping forming of motor silicon steel sheet 2 Plastic molding die, compression die, extrusion die and injection die (vertical, vertical and angular injection dies); Thermosetting plastic injection mold, extrusion molding mold (pipe, flat film mold, etc. ), foam molding die, low-tool tool foam injection molding die, blow molding die and other plastic products forming plus Huangyan process (thermosetting and thermoplastic molding compounds) 3 Hot chamber die casting machine, vertical cold chamber die casting machine, Chen Leng chamber die casting machine, full vertical die casting machine, non-ferrous metal (zinc, aluminum, copper, magnesium alloy) die casting, ferrous metal die casting molding process Non-ferrous metal and ferrous metal 4 forging die forging and large press forging die forging, screw press forging. The flat forging machine forms metal parts by forging dies and roll forging, such as cold upsetting dies, extrusion dies, wire drawing dies and liquid forging dies for various fasteners, and forges and extrudes metal models for casting various metal parts. Metal casting forming process 6 powder metallurgy mold forming mold: manual mold: solid one-way pressing and solid two-way pressing manual mold; Solid floating die moving die: large-section solid floating die, pole palm one-way die, sleeve one-way die, sleeve floating die forming die: manual die: radial forming die, sleeve full forming die with outer step, spherical part forming die and other moving dies: automatic forming die for solid parts without step, semi-automatic forming bag with sleeve pull rod, sleeve through automatic forming die, sleeve with outer step, sleeve automatic forming die with outer spherical surface, etc. The main die electro-machining equipment is used for copper-based and iron-based powder products; Mechanical parts, tool materials and easily-heated parts of products, etc. 7. Glass product mold Blow-blow molding bottle and jar mold, pressure-blow molding bottle and jar mold, glassware mold and other glass product molding processes 8. Rubber molding mold, rubber extrusion mold and rubber product injection mold. Rubber tire mold, O-ring rubber mold, etc. Rubber pressing molding process 9 Ceramic molds for various ceramic utensils and other products Ceramic product molding process 10 economic mold (simple mold) Low melting point alloy molding mold, sheet mold, laminated mold, silicone rubber mold, epoxy resin mold, ceramic precision mold, laminated cavity plastic mold, rapid electroforming molding mold, etc. It is suitable for a variety of small batch industrial products and has high economic value.