HEATING FURNACE

Japanese Patent JP2018014314

A

PROBLEM TO BE SOLVED: To provide a heating furnace capable of maintaining good contact state of a heater and an electrode.SOLUTION: A heating furnace where a heater and an electrode rod are connected tightly by inserting a bolt shaft into an insertion hole penetrating the heater, and further inserting into a hole provided in the apical face of the electrode rod before tightening the bolt, includes: a first washer for inserting the bolt shaft between the seating face of a bolt and one surface of the heater; and a second washer for inserting the bolt shaft between the other surface of the heater and the apical face of the electrode rod. Assuming the interval of the seating face of the bolt and the apical face of the electrode rod is L, the linear expansion coefficient of the bolt in the longitudinal direction is α, the thickness of the heater at an insertion hole formation part is T, the linear expansion coefficient in the thickness direction is α, the thickness of the first washer is T, the linear expansion coefficient in the thickness direction is α, the thickness of the second washer is T, the linear expansion coefficient in the thickness direction is α, and the temperature rise amount at a binding part of the heater and the electrode rod is ΔT, the following relation is satisfied; |Lα-(Tα+Tα+Tα)| ΔT≤0.15(T+T).SELECTED DRAWING: Figure 1

JP5322055

Porous heat generating device and its manufacturing method

OTSUSAKA TETSUYA

JP2017098645A

January 25, 2018

May 18, 2017

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SHINETSU CHEMICAL CO

H05B3/03; C03B5/235; C03B37/029; F27D11/02; H05B3/64

JPH10340777A	1998-12-22
JP2011165507A	2011-08-25
JPH07288178A	1995-10-31

Shigeki Orizaka

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