Machining refers to the process of altering the shape, size, or properties of a workpiece using machining tools.
- Cold Machining: Conducted at room temperature without causing chemical or phase changes in the workpiece. It is divided into:
- Cutting Machining: Includes turning, milling, drilling, etc.
- Pressure Processing: Involves forging, stamping, etc.
- Hot Machining: Performed at temperatures above or below room temperature, causing chemical or phase changes. Common types include heat treatment, forging, casting, and welding.
- Additive Manufacturing: Casting, forging, injection molding, powder molding, 3D printing, etc.
- Subtractive Manufacturing: Turning, milling, drilling, planing, boring, grinding (surface grinding, cylindrical grinding, internal grinding, centerless grinding), CNC machining, electrical discharge machining (EDM), wire electrical discharge machining (WEDM: slow-feeding and fast-feeding), welding (TIG welding, resistance welding, friction welding), laser processing (cutting, welding, marking), etching, etc.
