The width is sufficient to cover the uniform heating zone of the post-weld heat treatment specified by ASME.įrequency conversion control power supply can realize precise heating/heat preservation/cooling steps. Two specially designed air-cooled induction heating devices can be flexibly custmoized according to your choices.įeatures of Induction Post Weld Heat Treatment In addition to general equipment, JKZ also specializes in the post-weld heat treatment for pipes, plates, tanks and large-size heterogeneous workpieces. Due to the need for strict requirements of the heating time and temperature control, the high degree of automation of induction heating equipment have successfully made itself locate at a very important position in all kinds of PWHT post-weld heat treatment equipment. The temperature recorder will record the temperature curve and feedback the data to the control system. All the processes will be completed perfectly in accordacne with the pre-set heating time and PWHT temperature. These devices will normally first heat the workpiece at the temperature of 100-150 degrees/hour and they will gradually reach the target temperature at 650-780 degrees according to different metal material features. Take JKZ's induction heating devices as examples. Usually, this kind of post weld heat treatment procedure/processs is done with the induction heating machine. Post-weld heat treatment (PWHT) is a stress release process by heating the welded zone after the workpiece is welded, which is an indispensable step to ensure the welding quality.
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