Technical principles of plasma welding and TIG welding
1. plasma welding:
Plasma Welding uses a high-temperature plasma arc for welding. Plasma arc is generated through the plasma torch in the high temperature arc heating working gas (such as argon or helium), will be ionised to form a plasma. The plasma has a high temperature and high energy density, which can quickly melt the metal and form a weld. Plasma welding has high temperature, high speed, small heat-affected zone and other characteristics, suitable for precision welding and high melting point metal welding.
2. TIG welding:
Tig Welding uses a non-consumable tungsten electrode and inert gas (such as argon) to protect the arc. During the welding process, the tungsten electrode produces an arc between the workpiece and the electrode, and the high-temperature arc melts the metal to form a weld.TIG welding is widely used in the welding of various metal materials with its advantages of high weld quality, no spatter, and a wide range of applicability, and is especially suitable for welding thin plates and precision workpieces.
Advantages:
1. High efficiency and high temperature:
- The plasma arc temperature can reach more than 20,000°C, which can melt the metal quickly and improve the welding speed and efficiency.
2. High welding accuracy:
- The plasma arc beam is concentrated and the heat affected zone is small, enabling fine welding and reducing distortion and stress.
3. Wide material applicability:
- Applicable to the welding of a wide range of metal materials, especially suitable for high melting point metals, such as titanium, aluminium, stainless steel and so on.
4. Excellent automation performance:
- Easily integrated with automated equipment to achieve efficient and intelligent welding production.
Disadvantages:
1. Higher equipment costs:
- Plasma welding equipment and maintenance costs are high, and the initial investment is large.
2. Complex operation:
- Requires professional training and technicians to operate, higher requirements for welding process.
3. High requirements for the welding environment:
- It needs to be carried out under stable inert gas protection, and the adaptability of the equipment to the environment is required to be high.
TIG Welding
Advantages:
1. High quality weld:
- Welding process without spatter, good weld shaping, high quality, suitable for high-demand welding tasks.
2. Flexible operation:
- Suitable for welding thin plates and precision workpieces, flexible process, can be welded a variety of complex shapes.
3. Wide welding range:
- Can weld almost all metal materials, including stainless steel, aluminium, titanium, copper, etc., widely used in various industries.
4. lower equipment costs:
- TIG Welding Equipment is relatively simple, low cost, suitable for small and medium-sized enterprises.
Disadvantages:
1. slower welding speed:
- Due to the dispersion of the heat source, the welding speed is relatively slow and the productivity is low.
2. High requirements for operating technology:
- Welders need to have high operating skills and extensive experience.
3. Large heat-affected zone:
- When welding thicker materials, the heat-affected zone is larger, which may lead to material deformation.