Medium-frequency induction heating furnace body, furnace body manufacturing method and temperature control method

By opening a temperature measuring hole and an induction coil structure on the side wall of the medium frequency induction heating furnace body, and adjusting the power of the induction coil in conjunction with a control device, the problem of inaccurate temperature measurement of the blank material in the existing technology is solved, and high-precision temperature control and blanking are achieved. Segmented management of material heating.

CN111761020APending Publication Date: 2020-10-13HANGZHOU KEYUAN ELECTRIC FURNACE CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HANGZHOU KEYUAN ELECTRIC FURNACE CO LTD
Filing Date
2020-08-03
Publication Date
2020-10-13

AI Technical Summary

Technical Problem

The existing method of temperature measurement at the outlet of the medium frequency induction heating furnace causes the blank to cool down or become oxidized, resulting in a low temperature signal and inability to accurately measure the temperature.

Method used

Design a medium-frequency induction heating furnace body. Multiple temperature measurement holes are provided on the side wall of the furnace body. The induction coil and insulating strip structure are fixed. The temperature measurement holes directly pass through the infrared thermometer to avoid contact between the blank and the air, and pass the control device Adjust the induction coil input power according to the real-time temperature signal.

Benefits of technology

It improves the accuracy of temperature measurement, simplifies the manufacturing process, avoids damage to the furnace lining caused by direct drilling, and realizes segmented control of the heating temperature of the blank to ensure the qualification rate of the blank.

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Abstract

The invention relates to the technical field of medium-frequency induction heating furnaces, in particular to a medium-frequency induction heating furnace body, a furnace body manufacturing method anda temperature control method. The medium-frequency induction heating furnace body comprises a furnace lining, a material channel allowing a blank to pass through is formed in the middle of the furnace lining, and an induction coil which extends in axial direction of the material channel and is spirally wound on outer side of the material channel is arranged in the furnace lining; and a pluralityof temperature measuring holes are formed in the side wall of the furnace lining in the axial direction of the furnace lining at intervals, the temperature measuring holes are formed in the radial direction of the furnace lining and penetrate through the side wall of the furnace lining, and the temperature measuring holes are located at the intervals between every two adjacent turns of coils of the induction coil. The invention further provides a manufacturing method of the medium-frequency induction heating furnace body and a temperature control method of the medium-frequency induction heating furnace. According to the furnace body, the temperature measuring holes are formed in the side wall of the furnace body for temperature measurement instead of adopting the temperature measurement mode at a discharge port so that the temperature measurement accuracy can be improved.
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