Metal forming and processing methods which have their own characteristics and scope of application
Casting is the liquid metal is poured into the mold with the required part of the mold cavity, to be cooled and solidified to obtain the required blank, parts of the production method. Casting has a very clear advantages and disadvantages, is the modern machinery manufacturing metal materials forming one of the basic process.
Metal material cutting is the use of machine tools and other materials on the blank or the workpiece on the excess metal cutting, the workpiece to obtain the required shape and size of the surface quality of the processing methods. Cutting is an important processing method in the mechanical manufacturing process. Although the workpiece manufacturing precision is increasing, casting, precision forging, extrusion, powder metallurgy and other processing technology is increasingly widespread, but the cutting a wide range of applications, to achieve the required accuracy and surface roughness, in the mechanical manufacturing process Has always occupied an important position.
Forging processing is a combination of forging and stamping processing, is the use of forging machinery hammer, anvil, punch or general mold on the blank pressure, the blank plastic deformation, access to the required parts of the metal material forming method. Forging the workpiece size is accurate, suitable for mass production. After the workpiece mechanical properties of the workpiece is significantly provided, but the corresponding high cost of manufacturing, can only be processed plastic high metal materials.
Casting the advantages are: First, you can produce complex shapes, especially the complex cavity of the rough, such as the box; Second, a wide range of applications, casting the size of unrestricted; Third, you can use low scrap as raw materials, Low; four is the shape and size of the casting and the required parts are very close, can save a lot of metal materials. Casting the shortcomings are as follows: First, the process is relatively difficult to control, easy to produce defects; Second, compared to forgings, casting performance is relatively low; Third, in some casting process, the production of small quantities, workers labor intensity.
Metal material refers to the metal or metal-based metal properties of the material collectively. Including pure metal, alloy and special metal materials. Common metal materials, molding methods are casting, forging processing, cutting, powder metallurgy and welding.
