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Title:
HEATING ELEMENT COMPENSATION ARRAY STRUCTURE FOR VACUUM HEAT TREATMENT FURNACE
Document Type and Number:
Japanese Patent JP2014122733
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a vacuum heat treatment furnace adjusting uniform heating of a treatment object in a vacuum furnace.SOLUTION: There is provided a heating element array structure for a vacuum heat treatment furnace in which heating elements constructing a heating element array have different electric resistances or different watt densities at different positions in the heating element array. In this array structure, in order to provide a more excellent temperature uniformity in one processing amount of the treatment object, heating elements having an electric resistance selected so as to provide heat required at a hot zone in a furnace are arrayed. The electric resistance and watt density of the heating element array are changed with the use of a first heating element comprising a certain geometry in one segment of the heating element array and a second heating element comprising a different geometry from the geometry of the first heating element in another segment in the heating element array.

Inventors:
CRAIG A MOLLER
HENDRIK GROBLER
GEOFFREY SOMARY
Application Number:
JP2012278316A
Publication Date:
July 03, 2014
Filing Date:
December 20, 2012
Export Citation:
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Assignee:
IPSEN INC
International Classes:
F27D11/02; C21D1/773; H05B3/10
Domestic Patent References:
JP2003240442A2003-08-27
JP2004324971A2004-11-18
Attorney, Agent or Firm:
竹下 和夫