Heat treatment equipment and heat treatment method

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 11286535
APP PUB NO 20190233911A1
SERIAL NO

16312388

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Importance

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Abstract

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Provided is a heat treatment apparatus (1), including: a conveying device (10), which is configured to convey a rod-shaped workpiece (W) at a predetermined velocity along an axial direction of the workpiece (W); and a heating device (2) including a heating coil (3) configured to inductively heat the workpiece (W) being conveyed to a quenching temperature, wherein the heating coil (3) includes a first heating section (3A) and a second heating section (3B), which are coupled to each other in series along the axial direction of the workpiece (W), and is electrically connected to a single high-frequency power supply (4), and wherein a coil pitch (D2) of the second heating section (3B) arranged relatively on a front side in a conveying direction for the workpiece (W) is larger than a coil pitch (D1) of the first heating section (3A) arranged relatively on a rear side in the conveying direction.

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Patent Owner(s)

Patent OwnerAddress
NTN CORPORATION3-6-32 NAKANOSHIMA KITA-KU OSAKA-SHI OSAKA 5300005 ?5300005

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hiraoka, Tsuneaki Shizuoka, JP 14 33
Suzuki, Shintaro Shizuoka, JP 138 1713
Tabuchi, Yuuki Shizuoka, JP 4 0

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