... . Metal superficial heating is perfect This high frequency induction heating machine A. Heating (hot forging, hot fitting and smelting):1 Hot ... . Welding of various hardware cutting tools, such as diamond tool, abrasive tool, drilling tool, alloy saw blade, hard alloy cutter, milling ... plain braze welding of other metals.4. Welding of heating disc of electric hot-water kettle mainly refers to the braze ...