ELECTRIC FURNACE - NIKKATO CORP

Title:

ELECTRIC FURNACE

Document Type and Number:

WIPO Patent Application WO/1997/028409

Kind Code:

A1

Abstract:

An electric furnace comprising a heating element formed of lanthanum chromite based hollow ceramics and opened at both ends thereof and having such terminal portions that a cross-sectional area of the ceramics at surfaces of both ends thereof perpendicular to a lengthwise direction are made larger than that of the ceramics at a surface of a central portion thereof perpendicular to the lengthwise direction and having electrodes for high temperature and metallic lead wires mounted to the terminal portions to make an intermediate portion between the terminal portions a heating portion, a heat insulator fitted over the heating element, and a hollow ceramics body mounted in a hollow portion of the heating element with a hollow portion thereof serving as an effective heating chamber. The electric furnace is a small-sized one which is stably usable even at 1400 �C or higher, and is excellent in durability, profitability and handling property.

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Inventors:

NAKATANI MASANORI (JP)
ABE TAKESHI (JP)
KAWANAMI TOSHIO (JP)

Application Number:

PCT/JP1997/000217

Publication Date:

August 07, 1997

Filing Date:

January 30, 1997

Export Citation:

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Assignee:

NIKKATO CORP (JP)
NAKATANI MASANORI (JP)
ABE TAKESHI (JP)
KAWANAMI TOSHIO (JP)

International Classes:

F27B17/00; F27D11/02; H05B3/14; H05B3/62; H05B3/64; (IPC1-7): F27D11/02

Foreign References:

JPH0436076Y2	1992-08-26
JPH0332503Y2	1991-07-10

Other References: