Steel tube induction heating method
A technology of induction heating and steel pipes, which is applied in the field of steel pipe heating, can solve problems affecting the quality of steel pipes, uneven heating, insufficient roundness, etc., and achieve the effect of improving product quality
Inactive Publication Date: 2016-09-28
宁波奉化科创科技服务有限公司
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Problems solved by technology
[0002] In the field of steel pipe heating, induction heating has been widely used because of its fast, energy-saving, high-efficiency and other advantages. There are two existing induction heating methods. The other is to set a small induction coil, and the steel pipe will gradually pass through the coil to achieve continuous production during the heating process; the above two heating methods have a problem, once the axis of the steel pipe and the coil deviates slightly, it will cause a slight deviation in the circumferential direction of the steel pipe. Uneven heating, even if the axes of the two are completely coincident, uneven heating may be caused by insufficient roundness of the steel pipe, which will affect the quality of the steel pipe. There is no technical solution to solve the uneven temperature of the steel pipe circumference in the prior art, so it is necessary An induction heating method capable of completely and uniformly heating steel pipes
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Embodiment 1
[0013] A steel pipe induction heating method, after the heated steel pipe and the induction coil for heating are overlapped as much as possible, one of the heated steel pipe and the induction coil is selected as the rotating part, and the rotating part is rotated at a uniform speed around its own axis during the heating process. To ensure the uniformity of the circumferential heating temperature of the heated steel pipe.
[0014] In the present invention, the rotation speed of the rotating member around its own axis at a uniform speed is 1 to 20 revolutions per minute. If the rotation speed is too slow, the purpose of uniform heating in the circumferential direction cannot be achieved, and if the rotation speed is too fast, the heating efficiency will be affected and the mechanism will be damaged. Arrangement is difficult.
[0015] Usually, for the convenience of mechanism setting, the rotating part is an induction coil, but the heated steel pipe can also be used as the rotati...
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The invention relates to the field of steel tube heating, in particular to a steel tube induction heating device. According to a steel tube induction heating method, a heated steel tube and an induction coil for heating are overlapped as far as possible, the heated steel tube or the induction coil is selected as a rotating part, and the rotating part is made to rotate around the axis of the rotating part at a constant speed in the heating process so as to ensure the uniformity of the circumferential heating temperature of the heated steel tube. According to the steel tube induction heating method, the steel tube or the induction coil is made to rotate around the axis of the steel tube or the axis of the induction coil at the constant speed all the time in the process of heating the steel tube to offset the position matching error of the heated steel tube and the induction coil and the circularity error of the steel tube through rotation, the steel tube can be completely and uniformly heated in the circumferential direction, and accordingly the product quality is improved.
Description
technical field [0001] The invention relates to the field of steel pipe heating, in particular to an induction heating method for steel pipes. Background technique [0002] In the field of steel pipe heating, induction heating has been widely used because of its fast, energy-saving, high-efficiency and other advantages. There are two existing induction heating methods. The other is to set a small induction coil, and the steel pipe will gradually pass through the coil to achieve continuous production during the heating process; the above two heating methods have a problem, once the axis of the steel pipe and the coil deviates slightly, it will cause a slight deviation in the circumferential direction of the steel pipe. Uneven heating, even if the axes of the two are completely coincident, uneven heating may be caused by insufficient roundness of the steel pipe, which will affect the quality of the steel pipe. There is no technical solution to solve the uneven temperature of t...
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Patent Timeline
Login to View More IPC IPC(8): C21D9/08C21D1/42
CPCC21D1/42C21D9/08Y02P10/25
Inventor 励彩玲
Owner 宁波奉化科创科技服务有限公司