l What is metal Metalworking?

Metalworking (metal processing) is the general term for metal fabrication technology. Its meaning is that all technologies of processing metal materials into objects, parts, and components. The production of ranging from large parts such as bridges, and ships, to small components such as engines, jewelry, and watches can be called metal manufacturing. Metal fabrication is widely used in different fields such as science, industry, art, handicraft, etc.

l Types of Metalworking Processes:

1. Types of Metalworking processes are divided according to whether the metal material is heated during the forming process.

Cold machining (CNC machining, cold rolling, cold forging, stamping, etc.)

Hot machining (casting, hot rolling, hot forging, welding, heat treatment, etc.)

2. Types of Metalworking processes are divided according to different machining methods of metal materials.

(1) Deformation Processing

① Meaning

Deformation processing is one of the metal fabrication processes. Its meaning is that under normal temperature or heating conditions, applying an external force to the metal material makes the metal in a predetermined way to form a product with a certain geometric shape and size.

② Types

1) Plastic Forming

a. Meaning

Plastic (forming) processing is meaning that the processing method in which the plasticity of metal is changed by high-temperature heating, and the shape of metal is changed by mold to obtain the desired product.

2) Solid Molding

a. Meaning

Solid forming processing is meaning that a method of processing solid metal raw materials that can be formed at room temperature into desired products. Because the processing is relatively easy, the investment cost is low.

3) Pressure Processing

a. Meaning

Pressure processing is meaning that the production process of processing metal materials into desired raw materials, blanks, or parts with a certain shape, size, and mechanical properties by an external force.

b. Types

Forging, Stamping, Rolling, Extrusion, Drawing

4) Powder Metallurgy

a. Meaning

Powder metallurgy is one of the Metalworking processes, which means a processing method in which alloy powder is mixed and then pressed into a mold, and then heated and sintered at high temperature.

(2) Machining

① Meaning

Machining is a more precise machining method, which means that Use cutting tools such as cutters, abrasives, or abrasives to cut off excess material layers on a blank or workpiece to obtain products that meet the specified geometry, size, and surface quality requirements.

(3) Grinding

① Meaning

Grinding is a more precise machining method. It is a processing method that uses abrasives to remove excess materials on products to obtain products that meet the requirements.

(4) Welding

① Meaning

Welding is a process for permanently joining metallic materials. The principle is: to increase the activity of metal atoms by means of heating or pressure to promote the metal atoms between the welds to diffuse and recombine so that the separated metal materials are connected.

② Types

Fusion Welding, Pressure Welding, Brazing

(5) Surface Treatment

① Meaning

The surface treatment means the process of adding a surface layer to the product through a physical or chemical reaction, changing the mechanical, physical, and chemical properties of the product to meet the requirements of use.

② Types

Manual treatment:

Chemical treatment:

Mechanical treatment:

Heat treatment:

Electrochemical treatment:

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