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Welding processes and their characteristics, let me explain 6 types in detail to you

Release time:2019-09-12

Welding process and its characteristics, let me explain in detail to you6 types

Welding process is a metallurgical process and connection method that involves heating, pressurization, or a combination of both, or the use of no welding material, to cause atomic diffusion between two workpieces. Welding is widely used, both for metals and non-metals. Next, the editor from Dezhonik will introduce to you the six common welding processes and their characteristics.

1、 Laser welding

Laser welding: Laser radiation heats the surface to be processed, and surface heat diffuses internally through heat transfer. By controlling laser parameters such as pulse width, energy, peak power, and repetition frequency, the workpiece is melted to form a specific molten pool.

2、 Laser composite welding

Laser composite welding is a combination of laser beam welding and MIG welding technology, which achieves good welding results and quickly bridges the weld seam. It is currently an advanced welding method.

The advantages of laser composite welding are: fast speed, small thermal deformation, small heat affected area, and ensuring the metal structure and mechanical properties of the weld.

3、 Friction stir welding

Friction stir welding utilizes friction heat and plastic deformation heat as welding heat sources. The friction stir welding process is a process in which a cylindrical or other shaped (such as a threaded cylindrical) stirring needle is inserted into the joint of the workpiece, and through the high-speed rotation of the welding head, it rubs against the material of the welded workpiece, thereby causing the temperature of the connecting material to rise and soften.

4、 Electron beam welding

Electron beam welding is a method of welding that utilizes the heat energy generated by accelerated and focused electron beams bombarding welded parts placed in vacuum or non vacuum.

5、 Ultrasonic metal welding

Ultrasonic metal welding is a special method of connecting the same or different metals using the mechanical vibration energy of ultrasonic frequency. When metal undergoes ultrasonic welding, it neither delivers current to the workpiece nor applies a high-temperature heat source to the workpiece. Instead, under static pressure, it converts the vibration energy of the frame into friction work, deformation energy, and limited temperature rise between the workpieces. The metallurgical bonding between joints is a solid-state welding achieved without melting the base material. It effectively overcomes the phenomena of splashing and oxidation generated during resistance welding. Ultrasonic metal welding machines can perform single point welding, multi-point welding, and short strip welding on fine wire or thin sheet materials of non-ferrous metals such as copper, silver, aluminum, and nickel. It can be widely used for welding controllable silicon leads, fuse strips, electrical leads, lithium battery poles, and pole ears.

6、 Flash butt welding

The principle of flash butt welding is to use a butt welding machine to make contact between the two ends of the metal. Through a low voltage and strong current, when the metal is heated to a certain temperature and becomes soft, axial pressure forging is carried out to form a butt welding joint.

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