Transistor/Inverter Control Method Pulse Plasma Welding Device
■ Fully equipped with necessary functions and packaged. The power supply unit, gas control unit, cooling water circulation device, and their control units are fully equipped with necessary functions, allowing for use with just electrical and gas connections. ■ Soft and stable arc from 5A to 100A. Thanks to inverter control, a soft and stable arc is achieved across the entire range of 5A to 100A. Additionally, a constant current arc without fluctuations is maintained even with variations in power supply voltage and arc stand. ■ Improved workability and expanded application range with low-speed and high-speed pulse welding. Low-speed pulse settings from 0.5 to 15Hz and high-speed pulse settings from 10 to 300Hz can be freely adjusted, demonstrating effectiveness in various welding applications, enhancing workability and broadening the range of applications. It is also possible to operate without pulses. ■ Reliable arc start. During the start of the main arc, high frequency is superimposed on the pilot arc, ensuring a reliable start of the main arc even at low currents, eliminating failures in automatic welding.
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basic information
■Smooth start and end of welding. Welding start: No defects such as melting drop or poor fusion due to pre-flow, initial current adjustment, and upslope function. Welding end: The downslope, crater filler current adjustment, and after-flow function prevent shrinkage holes and cracks at the termination. ■Keyhole welding is easy for plate thickness up to 6mm. Stable arc, gas, and rational design of the torch make keyhole welding practically achievable for plate thicknesses up to 6mm.
Applications/Examples of results
- Both the power supply unit and the torch have a 100% usage rate, allowing for continuous operation. - There is no water leakage when replacing torch consumables. Additionally, the number of consumables is low and they have a long lifespan. - The shielding gas flows only during the main arc and for a few seconds before and after, resulting in low consumption. - Equipped with various input and output signal terminals necessary for automation. - The pilot arc circuit and the main arc circuit are independent, allowing the main arc to be turned ON and OFF separately, enabling pre-positioning for welding with the pilot arc and immediate transition to welding. - Safe and user-friendly design. - Electric shock prevention structure. - Detection and display for abnormal input voltage, overload, and abnormal temperature rise. - Fully compatible with 50/60Hz. - Easy maintenance and inspection. - Detection and display for low cooling water pressure and water supply interruption. - Energy-saving and gas-saving design.
Company information
Since its founding in 1918 (Taisho 7), Koike has served as an opinion leader in machine tools utilizing "gas energy," contributing to the development of key industries. During this time, in line with the progress of the era, we have developed cutting machines utilizing "plasma" and "laser" ahead of others, and have commercialized advanced automated systems using NC technology. At the same time, we have established a comprehensive total system to meet all customer needs, ranging from "gas, welding, and cutting to related equipment."
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