Machine processing is that the embryo carries out treating on the workpiece hair , the fundamental machine tool being put into use has : lathe , milling machine , planing machine , grinder. . . . Till the treating by checking workpiece comes to reach demand.

Lathing , milling treating accuracy is more general than being taller than among them in 0.02 mm retinue , dawdles away such that the very maximal grinder of treating accuracy is um level's. Casting is that the model uses molten steel to pour into molding by the fact that founding forms convex-concave mainly, its accuracy is a little a bit than, on use large-scale part demanding not to be taller than in accuracy.

Cast-on outwell is to refer to the good with smelting metal pouring-in casting mould, forming method gaining the certain form and function casting after the person solidifies.

Use the document casting the metal that method gets to be called casting. Method casting many, have sand casting mainly , the metal mold casts , pressure casts , model cast-on outwell waits as well as melting centrifugal cast-on outwell, application is among them the broadest with sand casting.

Mechanical processing is through the use of the material removal method for certain shapes and performance of the product of a kind of behavior. Turning, milling, planing, etc.

They are of different branches of mechanical industry, such as casting, forging, heat treatment, welding, machining, etc