Welding stresses vary from single to double, depending on the quality of the material to be treated. For example, optimum performance is imposed on high-pressure pipelines or fuel storage tanks. Plasma welding enables these high demands to be met. This technique guarantees a weld with greater precision and advanced processes. Several metals such as cast iron, copper, aluminum, steel, stainless steel, gold, plastic, can be effectively treated. Here is a guide to using your plasma welding system.
Prepare the material
Plasma welding requires the use of suitable equipment and materials. Make sure that all your work materials are available :
- The power source
The power source is used to start and operate the welding device. It provides the power necessary for its use. The plasma is generated in an ionized gaseous atmosphere to reach high temperatures (15,000 to 25,000 °C). The characteristics of the generator must comply with the standards of use and allow the necessary current to be supplied.
- Welding torch
The welding torch carries the tungsten electrode during the plasma welding process. It is used to control and direct the flow of plasma.
- Water recirculation
Water recirculation brings hot water out of the welding machine. It is useful for keeping equipment running at an optimal rate.
- Torch accessories
The accessories include a set of complementary materials for the torch. The parts needed to create the plasma arc are the electrode, nozzle, and nozzle.
- Filler metals
The filler metals are packaged in the form of a coil. They are usually similar in composition to the metals to be assembled. The filler metal differs depending on the welding processes and applications used.
The purpose of the gases is to protect the weld pool from the action of air. They are also used in the creation of the plasma arc. They are often supplied in bottles. The welder must control the flow. Commonly used gases are argon or binary mixtures (argon/hydrogen-helium or nitrogen).
Switch on the device
The next step is to switch on your device. On power-up, the generator converts single-phase or three-phase AC current to direct current. This DC voltage maintains and regulates the arc during machining.
Position the workpiece
Position the workpiece precisely. It must be maintained isostatically. The machining system must ensure the elimination of degrees of freedom and vibrations. Measures must be taken to prevent accidental arcing strikes. The parts must be protected from the adhesion of the solder scrapers.
Program and adjust the machining speed
Finally, program and automatically adjust parameters and machining speed. Proper program and speed definition will provide adequate dynamic stability to properly conduct your operation. The flow rate of the gas cylinders must also be well controlled.
Do not neglect to take adequate measures for your safety. Do not work in a closed or poorly ventilated room. Dress in the correct protective clothing.