JPS62170750U

JPS62170750U -

Info

Publication number: JPS62170750U
Application number: JP5954786U
Authority: JP
Priority date: 1986-04-18
Filing date: 1986-04-18
Publication date: 1987-10-29

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例による冷延コイル焼
鈍炉の断面側面図、第２図ａ，ｂはその効果を説
明するための加熱特性図、第３図は本考案の応用
例を示す冷延コイル焼鈍炉の断面側面図、第４図
はその吸込みダクト部分の断面正面図、第５図は
その吸込みダクトの断面図、第６図ａ，ｂはその
効果を説明するための加熱特性図、第７図は従来
の冷延コイル焼鈍炉を示す断面側面図である。図において、１は炉本体、７は循環フアン、８
はガスクーラ、９はラジアントチユーブ（輻射熱
源）、１１は吸込みダクト、１１ａは吸込みノズ
ル（吸込み口）、１３は吹出しダクト、１３ａは
吹出し口、１５は循環ダクト、１６は補助ラジア
ントチユーブ、Ｗは冷延コイル（被処理材）であ
る。 Fig. 1 is a cross-sectional side view of a cold-rolled coil annealing furnace according to an embodiment of the present invention, Fig. 2 a and b are heating characteristic diagrams for explaining its effects, and Fig. 3 shows an application example of the present invention. A cross-sectional side view of a cold-rolled coil annealing furnace, FIG. 4 is a cross-sectional front view of its suction duct, FIG. 5 is a cross-sectional view of the suction duct, and FIGS. 6 a and b are heating characteristics for explaining its effects. 7 are cross-sectional side views showing a conventional cold-rolled coil annealing furnace. In the figure, 1 is the furnace body, 7 is a circulation fan, and 8
is a gas cooler, 9 is a radiant tube (radiant heat source), 11 is a suction duct, 11a is a suction nozzle (suction port), 13 is a blowout duct, 13a is a blowout port, 15 is a circulation duct, 16 is an auxiliary radiant tube, W is a cold It is a rolled coil (material to be treated).

Claims

[Claims for Utility Model Registration] (1) In a box-shaped heat treatment furnace in which a material to be treated is heated and cooled in a box-shaped furnace body according to a predetermined heat pattern, A radiant heat source for heating the treated material with radiant heat is disposed above the treated material, a suction duct having a large number of suction ports on the lower surface is disposed above the radiant heat source, A blow-off duct having a blow-off port is disposed below the material to be treated, the blow-off duct and the suction duct are communicated through a circulation duct, a circulation fan is disposed in the circulation duct, and circulation of the circulation duct is provided. An auxiliary heating device for a box-type heat treatment furnace, characterized in that a heating means for heating gas in the furnace is provided on the downstream side of the fan. (2) The heating means includes a plurality of auxiliary radiant tubes inserted into the circulation duct at a position facing the blow-off duct on the downstream side of the gas cooler, and a combustion burner attached to one end of each auxiliary radiant tube protruding outside the furnace. An auxiliary heating device for a box-type heat treatment furnace according to claim (1) of the registered utility model, characterized in that the device is a heating device that is attached and the other end is connected to an exhaust duct.