Mitsui High-tec Incorporated

Koyo Thermo Systems Co., Ltd.

Takeaki Kozono

Yusuke Hasuo

Showa Tachisato

Shin Matsuda

A heat-treatment apparatus includes a casing, a loader which loads a workpiece to an inner part of the casing in order to apply a heat-treatment to the workpiece, and a canopy surface provided in the casing to cover the workpiece. The canopy surface includes a slope way with a sectional configuration where the canopy surface is cut on a plane vertical to a conveying direction of the workpiece inside the casing. The slope way includes a highest point and a downward inclined surface extending from the highest point to an outside of a zone between a perpendicular line extending from a left end of the workpiece and a perpendicular line extending from a right end of the workpiece.

Heat-treatment apparatus and heat-treatment method

A tray is provided for conveying a workpiece placed on the tray inside a heat treatment furnace. The tray includes plural kinds of positional displacement regulating parts for respectively regulating horizontal positional displacements of plural kinds of workpieces with different sizes, wherein the plural kinds of positional displacement regulating parts are arranged concentrically in a plane shape.

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Fukuoka, Japan

Takeaki Kozono