CN2318588Y

CN2318588Y - Double heating furnace

Info

Publication number: CN2318588Y
Application number: CN 97232308
Authority: CN
Inventors: 戴长虹; 李镇江; 蔺玉胜; 杨静漪; 赵茹
Original assignee: 戴长虹
Priority date: 1997-12-20
Filing date: 1997-12-20
Publication date: 1999-05-12
Anticipated expiration: 2007-12-20

Abstract

The utility model relates to a double heating furnace improved from an industrial furnace, comprising an industrial furnace (1), and a crucible (2) is placed in a furnace chamber. The utility model is characterized in that test specimens (5) heated in the crucible is inserted with two electrodes (3), (4). The utility model has the advantage that when the industrial furnace is heated, with the self resistance of test specimens which are heated performing self heating, the effect of rapid rise in temperature, enhanced heating efficiency, reduced temperature rising time, energy saving, reduced cost and high heating temperature is realized. The industrial furnace can also be replaced by a fuel heating furnace.

Description

Double heating furnace

The utility model relates to the improvement of industrial heating furnace.

Domestic and international employed industrial heating furnace is industrial furnace or fuel heating furnace at present, all is to be heated being heated sample by the outside, does not utilize the resistance of sample itself to carry out self heating as yet.

The purpose of this utility model be at industrial heating furnace to when being heated sample and heating, make the resistance heating of sample utilization itself, reach the dual-heated effect, thereby shortened heat time heating time greatly.

The purpose of this utility model realizes by following measure, in crucible, put into two electrodes (3), (4), add between two electrodes (3), (4) and be heated sample (5), the crucible (2) that electrode (3), (4) will be housed then and be heated sample (5) is put into the burner hearth of industrial furnace (1).The shape of electrode (3), (4) can be dull and stereotyped, also can be arc, and perhaps an electrode is bar-shaped, and another electrode is cylindric.The material of electrode (3), (4) can be a metallic copper, also can be nonmetal graphite.

Depositing the material of the crucible (2) of sample (5), can be the insulator corundum, also can be conductor graphite.When using the conductor graphite crucible, then graphite crucible can replace an electrode, and another electrode is for inserting the stick electrode in the sample of crucible center, and insertion depth should have certain distance apart from the crucible bottom surface.

Industrial furnace (1) also can be waited to substitute as oil oven by the fuel heating furnace.

The utility model is compared with industrial furnace or fuel heating furnace, in heated sample, be provided with pair of electrodes, thereby utilize the resistance of sample itself to generate heat, reach the purpose of sample self heating, dual-heated shortens heat time heating time greatly like this, have and save time, energy-conservation, reduce cost, improve the advantage of heating-up temperature and efficient.

Description of drawings is as follows:

Fig. 1 is the structural profile schematic diagram of Double heating furnace.

Fig. 2 removes vertical view behind the bell for Fig. 1.

The 1-industrial furnace, 2-crucible, 3-electrode, 4-electrode, 5-sample.

The utility model is further described in conjunction with the accompanying drawings, the bell of industrial furnace (1) is opened, in crucible (2), put into two electrodes (3), (4), between two electrodes, put into sample (5) again, then the crucible that electrode and sample are housed is put into burner hearth, close bell.After the input inert gas is removed the interior air of burner hearth, electric furnace (1) and electrode (3), (4) are switched on simultaneously, and the electric current of two electrodes can be a direct current, also can be alternating current, after treating that specimen temperature reaches predetermined temperature, electric furnace and electrode cut off the power supply simultaneously, treat that furnace temperature descends after, stop gas transmission, open bell, after taking out electrode (3), (4), crucible is taken out, pour out sample.If the resistivity of sample is minimum or very big, then can add the distance between additive or change pole plate area and the two-plate, to change its resistance, same available the utility model stove is heated.

Claims

1, a kind of by the improved Double heating furnace of industrial heating furnace, have industrial furnace (1), put into crucible (2) in the burner hearth, it is characterized in that being heated insertion two electrodes (3), (4) in the sample (5) in the crucible (2) in burner hearth.

2, Double heating furnace according to claim 1, the shape that it is characterized in that said electrode (3), (4) are dull and stereotyped, also can be arcs, and perhaps an electrode is bar-shaped, and another electrode is cylindric.

3, according to claim 1 or 2 described Double heating furnaces, it is characterized in that the material of said electrode (3), (4), can be metallic copper, also can be nonmetal graphite.

4, Double heating furnace according to claim 1 is characterized in that the material of said crucible (2), can be the insulator corundum, also can be conductor graphite.

5, according to claim 1 or 4 described Double heating furnaces, when it is characterized in that said crucible (2) for conductor graphite, then crucible (2) just can replace an electrode, and another electrode is for inserting the stick electrode at crucible (2) center.

6, Double heating furnace according to claim 1 is characterized in that said industrial furnace (1), also can be the fuel heating furnace.