Ihi Corporation

Ihi Machinery and Furnace Co., Ltd.

Ami Ueda

Shinya Kudo

Kazuhiko Katsumata

Takahisa Shimada

Junji Inoue

A device is provided with a measurement window, which is provided in a heat treat furnace and which permits direct visual observation of a surface to be measured of a heat-treated workpiece, and a temperature sensor, which is provided outside the measurement window and which is capable of carrying out noncontact measurement of the surface temperature of the surface to be measured through the measurement window. The temperature sensor has a measurement wavelength range in which the absorptivity by water is low (e.g., 1.95 &#x3bc;m to 2.5 &#x3bc;m). Further, the measurement window is composed of a window material having a high transmittance in the measurement wavelength range (e.g., germanium).

Device and method for measuring temperature of heat-treated workpiece

The mist cooling apparatus () includes: a cooling system () which includes a nozzle (A) that sprays cooling liquid in a form of a mist onto a treatment object which has been heated and provided in a cooling furnace (), and a pump () that is driven by a drive source and thereby makes the cooling liquid flow toward the nozzle (A); and a second cooling system () which operates in response to a stoppage of the drive source, and thereby cools the treatment object.

Mist cooling apparatus and heat treatment apparatus

The invention adopts a mist cooling apparatus () that cools a heated treated subject M by spraying a cooling mist thereto, the mist cooling apparatus including: a first nozzle () that sprays a cooling mist; and a second nozzle () that sprays a cooling mist having a particle diameter smaller than the particle diameter of the cooling mist sprayed from the first nozzle.

Mist cooling apparatus, heat treatment apparatus, and mist cooling method

Heat treat furnace

Portion of heat treat furnace

Portion of heat transfer furnace

Growing community of inventors

Tokyo, Japan

Ami Ueda