Split steel band heating furnace without muffle tube
A steel strip heating, split-type technology, applied in heat treatment furnaces, furnaces, furnace types, etc., can solve the problems of low efficiency, short life, and large energy consumption of muffle heating furnaces, and achieve reduced quality and increased service life , The effect of improving thermal efficiency
Inactive Publication Date: 2012-09-19
ZHEJIANG BAINAI STEEL STRIP
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Problems solved by technology
[0011] The purpose of the present invention is to provide a split-type muffle-free steel belt heating furnace, which can effectively solve the problems of low efficiency, slow heat transfer, short life and high energy consumption of the muffle heating furnace
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[0032] refer to figure 1 , figure 2 It is an embodiment of a split-type muffle-free steel strip heating furnace of the present invention. A split-type muffle-free steel strip heating furnace includes a split shell, and the inner wall of the shell is provided with an insulating layer 4, so The insulation layer 4 is surrounded by a furnace 12 which is closed around. The furnace 12 is provided with a resistance band 5. The furnace 12 is also provided with a protective gas inlet 9 connected with a protective gas source. The resistance band 5 is arranged in the furnace. 12, the resistance band 5 is provided with a mica plate 6, and the mica plate 6 is provided with at least several graphite blocks 7, and the distance between the adjacent graphite blocks 7 is one meter, and the furnace 12 The top of the top is also provided with a resistance band 5, and the resistance band 5 is fixed on the insulation layer 4 by stainless steel nails. The shells 11 are connected by bolts 3, the j...
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The invention discloses a split steel band heating furnace without a muffle tube. The split steel band heating furnace comprises a split shell, wherein a ceramic fiber board insulating layer is arranged on the inner wall of the shell, the ceramic fiber board insulating layer forms a hearth with an enclosed periphery, a resistance band is arranged in the hearth, and a shielding gas inlet communicated with a shielding gas source is also arranged in the hearth. The split steel band heating furnace without the muffle tube has the advantages that infrared rays emitted by the resistance band directly radiate on a steel band with heat barriers, and the hearth is reduced in size, the heating speed of the steel band s increased by one time in comparison with that of the original mode; because the heating speed is increased, the length of the heating furnace is reduced by one third, the heating radiating area is reduced and the heat transfer speed is increased, the heat efficiency can be increased by above 35 percent, the total heat efficiency of the heating furnace can reach about 70 percent; and due to no adoption of the muffle tube and the reduction of the furnace body, the cost of the furnace body can be reduced by above one third, the operating speed of the steel band can be increased by one time, the production rate can be improved by one time, and the cost of the heat treatment of the steel band can be reduced by 30 percent.
Description
technical field [0001] The invention relates to a split-type muffle-free steel belt heating furnace. Background technique [0002] The austenitic heating and tempering heating of the steel strip heat treatment generally use an integral resistance heating furnace equipped with a muffle tube. The function of the muffle tube is to provide a closed environment for heating the steel strip with a protective gas. In this way, after the heating furnace is filled with protective gas, the protective gas can be saved. It can also ensure that the steel strip will not be oxidized. [0003] However, the use of muffle tubes will bring a series of disadvantages: [0004] 1. According to the conclusion of the thermal radiation experiment: the heat transfer rate of the diaphragm heat transfer is reduced by half compared with the direct heat transfer. The currently used steel belt heating furnaces have muffle tubes, which adopt resistance heating, that is, the resistance emits infrared rays...
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Inventor 李益明林名钟
Owner ZHEJIANG BAINAI STEEL STRIP