US 10,952,288 B2Granted

Induction heating device, induction heating equipment, induction heating method, and heat treatment method

AssigneeNeturen Co., Ltd.

InventorsHitoshi Nakatsu, Masato Yoshioka, Yoshimasa Tanaka, Tsutomu Ito, Kenji Koyanagi, Masaki Sagae, Tatsuya Ishii, Yoshitaka Misaka, Yasuharu Ogawa

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Abstract

An induction heating device and an induction heating method are provided. The entire areas to be heated of the workpiece can be uniformly heated to a predetermined high temperature, and uniform heating is possible even when the workpiece deforms in a non-uniform manner during heating. When areas to be heated are established on a workpiece so as to extend in one direction and the areas to be heated are induction-heated, the deformation amount on one edge of the areas to be heated is different from that on the other. This induction heating device includes; heating coils facing a portion of the areas to be heated when the workpiece is induction-heated; and a relative transfer means for transferring the workpiece and the heating coils along one direction in a relative manner, and the heating coils are disposed so as to correspond to the areas to be heated during the heating period.

Claims2

Dependent claims

An induction heating method for induction-heating a workpiece where areas to be heated are established extending in one direction, the deformation amount that appears on one edge of the areas to be heated when the areas to be heated are induction-heated being different from that on the other, comprising:

a heating process for allowing heating coils to face a portion of the areas to be heated and for heating the workpiece using the heating coils while the workpiece and the heating coils are made to move along the direction in a relative manner, and
detecting surface positions of the workpiece other than the areas to be heated during the heating period;
correcting measurement positions obtained by detection result based at least on the shape of the workpiece;
and changing relative positions and a relative angle between the workpiece and the heating coils so as to correspond to corrected positions obtained by the correction,
wherein the heating coils are disposed so as to follow the areas to be heated during heating period.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/037,761Filed 17 Jul 2018 · division
Priority: JP 2011-0851297 Apr 2011
Published: US 2018/0332672 A115 Nov 2018
Granted: 16 Mar 2021
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

H05B 6/40
Coil arrangements: establishing desired heat distribution, e.g. to heat particular parts of workpieces
H05B 6/06
Induction heating: control, e.g. of temperature, of power
H05B 6/101
Induction heating apparatus, other than furnaces, for specific applications: for local heating of metal pieces
H05B 6/44
Coil arrangements: having more than one coil or coil segment

Family

PCT/JP2012/059607Parent of this division · filed 6 Apr 2012
US 2018/0332672 A1Pre-grant publication · published 15 Nov 2018
Application14/110,410Parent of this division
US 10,057,945 B2Parent of this division
US 10,912,159 B2Related patent
US 2014/0144904 A1Published application
US 10,952,288 B2This patent

From the US filing history. Foreign family members aren’t listed.