Inverter DC arc welding machine is a kind of welding power supply using inverter technology, which has the advantages of small size, light weight, high efficiency and good dynamic characteristics, and is suitable for welding a variety of metal materials. This article will introduce the working principle, use steps and precautions of the inverter DC arc welding machine.
The inverter DC arc welding machine is mainly composed of input rectifier filter, inverter, intermediate frequency transformer, output rectifier filter and control circuit. It converts the input three-phase power frequency alternating current into direct current through the rectifier filter, and then turns it into tens of kilohertz intermediate frequency alternating current through the inverter, and then through the intermediate frequency transformer to step down, and then through the output rectifier filter to output a stable DC welding current. The control circuit adjusts the switching frequency and duty cycle of the inverter according to the needs of the welding process, so as to achieve accurate control of the welding current.
The steps of using the inverter DC arc welding machine are as follows:
Check whether the welding machine and welding equipment are in good condition, connect the input power supply, welding cable, welding rod clamp and grounding clamp, and select the appropriate welding rod and welding parameters.
Turn on the power switch, observe whether the indicator light and display of the welding machine are normal, if there is a fault, the welding machine should be eliminated or replaced in time.
Connect the electrode clamp with the electrode, and connect the grounding clamp with the weldment to ensure good contact.
Touch the surface of the weldment at a certain angle (generally 60° 80°) and quickly lift it upwards about 2 4 mm to form a stable arc.
Move the electrode at an appropriate speed along the direction of the weld to keep the arc length and the width of the weld consistent, so that the weld is formed smoothly and the weld slag is easy to peel off.
At the end of welding, disconnect the electrode from the weldment, cut off the arc, and turn off the power switch.
The precautions for inverter DC arc welding machine are as follows:
Before use, you should read the instruction manual of the welding machine to understand its performance, specifications and operation methods, and wire it in accordance with the regulations, and do not change the parameters and circuits at will.
When using, you should pay attention to the working status of the welding machine, if there is any abnormal sound, smell or smoke, you should stop using it immediately, find the cause and eliminate the fault.
When using, attention should be paid to preventing electric shock, scalding, fire and other accidents, wear protective equipment, stay away from flammable and explosive materials, and clean up welding slag and sparks in time.
After use, the power supply should be cut off, the welding machine should be cleaned and maintained, and placed in a dry, ventilated and cool place to avoid direct sunlight and rain.
In a word, inverter DC arc welding machine is an advanced welding power source, which has many advantages, can improve welding quality and efficiency, and is suitable for a variety of welding occasions. When using the inverter DC arc welding machine, you should pay attention to grasp its working principle, use steps and precautions, comply with safety regulations, operate correctly, and prevent accidents. Hopefully, this article will help you better use the inverter DC arc welding machine. List of high-quality authors