JPH0578800A - First tapping method of channel induction furnace for galvanizing - Google Patents

Abstract

PURPOSE:To save the equipment cost and setting space by eliminating a holding pot and a pump. CONSTITUTION:An inductor channel 12A and a throat part 11A are heated and dried and, by heating the inductor 12 with an induction heating device, an zinc ingot 21 is repeatedly supplied into the throat part 11A after the molten zinc 20 is filled up into the inductor channel 12A and the throat part 11A, and a part of the molten zinc 20 is repeatedly overflown into the furnace chamber 11 beforehand incorporating the zinc ingot 22 from the throat part 11A accompanied with the supply of the ingot 21. By heat of the molten overflown zinc 20, the ingot 22 in the furnace chamber 11 is heated and slowly melted, and also by the heat radiation from the molten overflown zinc 20, the wall surface of the furnace chamber 11 is made to dry.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a first hot water method for a galvanizing groove type induction furnace, and more particularly to a first hot water method for a galvanizing groove type induction furnace which simplifies the work of the first hot water.

[0002]

2. Description of the Related Art A conventional method of this type has been carried out by using, for example, the apparatus shown in FIG. Before explaining the conventional first hot-melting work, first, the apparatus used for the work will be described with reference to FIG. 2. The conventional galvanized groove-type induction furnace 10 is shown in FIG. A furnace chamber 11 made of refractory so as to store
An inductor 12 having an inductor groove 12A connected to a throat portion 11A penetrating the lower part of the furnace chamber 11,
The furnace chamber 11 is heated by heating the inside of the furnace chamber 11 prior to the supply of the first zinc bath.
A burner 13 for drying the inner wall surface of the furnace and a cover 14 for closing the upper opening of the furnace chamber 11. Further, a grooved induction furnace 10 for galvanizing is adjacent to a holding pot 30 with a heating device (not shown) for melting and accumulating and holding the molten metal 20 and stored in the holding pot 30. Groove type induction furnace 1 for galvanizing molten metal 20 via a pump 40 and a communicating pipe 41 for supplying molten metal 20.
The molten metal 20 is supplied to 0 as the first molten metal.

To perform the first hot water work using the above apparatus,
First, the furnace chamber 11 is heated by the burner 13 to preheat and dry the furnace chamber 11 and the inductor 12, and the moisture impregnated in the refractory forming the furnace chamber 11 is also heated. Is evaporated from the refractory material to remove water beforehand. When the heating and drying of the furnace chamber 11 is completed, the molten metal 20 is supplied from the holding pot 30 in which the molten zinc 20 has been prepared in advance to the groove-type induction furnace 10 for galvanizing through the pump 40 and the communication pipe 41. By doing so, the first hot water work is completed.

At the time of the above-mentioned first hot work, the molten metal 2 is suddenly transferred from the holding pot 30 to the galvanizing groove type induction furnace 10 without preheating the galvanizing groove type induction furnace 10.
When 0 is supplied, the refractory in the furnace chamber 11 is rapidly heated by the molten metal 20 and the furnace chamber 11 is damaged, or the moisture impregnated in the refractory is heated and the moisture is rapidly evaporated from the refractory. Therefore, in order to perform an initial hot water operation, the groove induction furnace 10 for galvanizing is previously preheated before the initial hot water is supplied, as described above, because an explosion phenomenon may occur.

[0005]

However, in the conventional first hot work, the burner 13 for heating and drying the furnace chamber 11, the holding pot 30 for storing the molten metal 20, and the molten metal 20 have been used.
The pump 40 for supplying the gas to the furnace chamber 11 is required, and the equipment cost and installation space for these are the groove-type induction furnace 10 for galvanizing.
Besides, there was a problem that it was necessary.

As a technique relating to this type of groove type induction heating furnace, for example, Japanese Patent Laid-Open No. 63-129293,
JP-A-55-12339 and JP-A-59-929.
Although there is a technique described in Japanese Patent Publication No. 8, the former two are techniques relating to a method for refurbishing a furnace room, and the other is merely a technique for improving the convenience of hot water temperature measurement at the time of first hot water, etc. None of these aims to make the equipment required for the first hot water work compact.

The present invention has been made in order to solve the above-mentioned problems, and provides a first hot water method for a grooved induction furnace for galvanizing which eliminates a holding pot and a pump and saves the equipment cost and installation space. It is intended to be provided.

[0008]

According to the present invention, there is provided an initial heating method for a grooved induction furnace for galvanizing, wherein an inductor is heated by an induction heating device to fill the inductor groove and the throat with a molten zinc, and then the throat is filled with zinc. By repeatedly supplying lumps of zinc, a portion of the molten zinc is caused to repeatedly overflow from the throat into the furnace chamber where other zinc lumps are already stored, and the heat of the spilled zinc melt causes the zinc in the furnace chamber to flow. The lump is heated to gradually heat and melt, and the wall surface of the furnace chamber is dried by heat radiation from the overflowed molten zinc.

[0009]

According to the present invention, when the inductor is heated by the induction heating device to make the molten zinc in the inductor groove and the throat, and the molten zinc is filled in these, the molten zinc is repeatedly supplied to the throat. Part of the molten steel repeatedly overflows from the throat part into the furnace chamber where other zinc ingots are stored in advance as the zinc ingot is supplied, and the overflowed molten zinc heats the zinc ingot in the furnace chamber by its latent heat and gradually heats it. It is possible to dry the inner wall surface of the furnace by melting the molten zinc and radiating latent heat from the overflowed molten zinc.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the embodiment shown in FIG. FIG. 1 is a cross-sectional view showing a main part of a grooved induction furnace for galvanizing which is preferably used in one embodiment of the method for initial hot water of the grooved induction furnace for galvanizing of the present invention.

First, a description will be given of a groove-type induction furnace 10 for zinc plating, which is preferably used in one embodiment of the method of initial hot water of the groove-type induction furnace for zinc plating of the present invention. As shown in FIG. 1, the groove-type induction furnace 10 for galvanizing includes a furnace chamber 11 formed of a refractory so as to store molten zinc and a furnace chamber 1
An inductor 12 having an inductor groove 12A connected to a throat portion 11A penetrating the lower part of the wall surface of 1;
A conventional induction heating device (not shown) for induction heating the inductor 12 is provided.

Thus, the groove type induction furnace 10 for galvanizing described above.
In the case of performing the first hot water operation using, first, only the inductor 12 and the throat portion 11A are partially heated by the induction heating device to heat and dry these portions, and then about 500 to
Inductor 1 is supplied by supplying 800 kg of molten zinc 20.
2 and the throat part 11A are heated, this zinc melt 2
Increase the temperature of 0 to increase the inductor groove 12A and the throat portion 1
The molten zinc 20 can be filled in 1A.

After that, when a zinc lump, for example, an ingot 21 of 20 kg of zinc is repeatedly supplied into the throat part 11A, the molten zinc 20 is supplied from the throat part 11A by the amount corresponding to the volume of the ingot 21 each time the ingot 21 is supplied. A lump (for example, 1000 Kg of zinc ingot) 22 repeatedly overflows into the furnace chamber 11 containing the layers. Initially, the ingot 22 in the furnace chamber 11 takes away the latent heat of the overflowed molten zinc 20 and solidifies it, and the heat release causes the temperature inside the furnace chamber 11 to rise, so that the wall surface of the furnace chamber 11 is slightly dried. Let On the other hand, the ingot 21 supplied into the throat portion 11A is replenished only with the molten zinc 20 which is melted and overflowed by the heating by the induction heating device.

While the overflow of the molten zinc 20 is repeated as described above, the latent heat of the molten zinc 20 causes the ingot 22 in the furnace chamber 11 to gradually rise in temperature and melt, and the initial molten zinc begins to be produced. By radiating the latent heat from the molten metal 20, the wall surface (refractory material) of the furnace chamber 11 is gradually heated to evaporate its moisture and gradually dry the refractory material. When this drying progresses, almost no water is evaporated from the refractory. When the temperature of the wall surface of the furnace chamber 11 rises in this way, the molten zinc 2
Even when 0 is in contact, the molten zinc does not blow up due to the water content of the refractory, and the refractory is not damaged by the thermal shock of the molten zinc 20.

When the amount of the molten zinc 20 in the furnace chamber 11 is increased by repeating the supply of the ingot 21 as described above, the ingots 22 are sequentially charged into the furnace chamber 11 to cause the inside of the furnace chamber 11 to flow. It becomes possible to fill with the molten zinc and supply the molten zinc to the galvanizing.

As described above, according to this embodiment,
While the inductor 12 and the throat portion 11A are heated to fill the molten zinc 20 from the inductor groove 12A and the throat portion 11A, the throat portion 11A has an ingot 2
1 is repeatedly supplied to the molten zinc 2 from the throat portion 11A.
While gradually supplying 0 into the furnace chamber 11, the initial molten metal is gradually produced in the furnace chamber 11, and the molten zinc 2 supplied during this period
By using the latent heat of 0 to heat the refractory material forming the furnace chamber 11 and gradually raise the temperature to dry the refractory material, there is no need for a conventional holding pot or pump. Equipment costs and installation space can be saved.

The present invention is not limited to the above-described embodiment. In short, after the inductor is heated by the induction heating device to fill the inductor groove and the throat portion with the molten zinc, the throat portion is lumped with zinc. Is repeatedly supplied to cause a part of the molten zinc to be repeatedly overflowed from the throat part into the furnace chamber in which other zinc ingots are stored in advance together with the supply of zinc ingots.
With the method of heating the zinc ingot in the furnace chamber by the heat of the overflowed zinc melt to gradually heat and melt it and drying the wall surface of the furnace chamber by the heat radiation from the overflowed zinc melt, All the inventions are included in the present invention.

[0018]

According to the present invention, it is possible to provide a first hot water method for a grooved induction furnace for galvanizing, which can eliminate the holding pot and the pump and save the equipment cost and installation space.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a main part of a groove-type induction furnace for galvanizing, which is preferably used in an embodiment of a method of initial hot water of the groove-type induction furnace for galvanizing of the present invention.

FIG. 2 is a cross-sectional view showing a conventional channel induction furnace for galvanizing and a device for supplying initial molten zinc.

[Explanation of symbols]

 10 Grooved Induction Furnace for Zinc Plating 11 Furnace Chamber 11A Throat Part 12 Inductor 12A Inductor Groove 20 Zinc Molten Metal 21 Zinc Ingot (Zinc Ingot) 22 Zinc Ingot (Zinc Ingot)

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[Procedure amendment]

[Submission date] June 22, 1992

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] Claim 1

[Correction method] Change

[Correction content]

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0008

[Correction method] Change

[Correction content]

[0008]

SUMMARY OF THE INVENTION A method of first hot-melting a groove-type induction furnace for galvanizing according to the present invention includes an inductor groove and a throat portion.
After heating and drying the inductor and heating the inductor with an induction heating device to fill the inductor groove and throat part with molten zinc, repeatedly supplying zinc lumps to the throat part and supplying part of the molten zinc to the throat part Repeatedly overflows into the furnace chamber where other zinc ingots are stored in advance, and the heat of the overflowed molten zinc heats the zinc ingots in the furnace chamber to gradually heat and melt the molten zinc. The wall surface of the furnace chamber is dried by heat dissipation.

[Procedure 3]

[Document name to be amended] Statement

[Correction target item name] 0009

[Correction method] Change

[Correction content]

[0009]

According to the present invention, the inductor groove and the throat are provided.
Part is heated and dried, the inductor is heated by an induction heating device to make molten zinc in the inductor groove and throat part, and after filling these with molten zinc, when a lump of zinc is repeatedly supplied to the throat part, part of the molten zinc With the supply of zinc lumps, it repeatedly overflows from the throat into the furnace chamber where other zinc lumps are stored beforehand, and the overflowed molten zinc heats the zinc lumps in the furnace chamber by its latent heat and gradually heats and melts it. By radiating the latent heat from the overflowed molten zinc, the inner wall surface of the furnace can be dried.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0017

[Correction method] Change

[Correction content]

Incidentally, the present invention is not limited to the above-mentioned embodiment in any way, in short, the inductor groove and the throat portion are not provided.
After heating and drying , the inductor is heated by the induction heating device to fill the inductor groove and the throat with the molten zinc, and then the zinc lump is repeatedly supplied to the throat to supply a part of the molten zinc from the throat together with the supply of the zinc lump. It repeatedly overflows into the furnace chamber where other zinc ingots are stored in advance, and the heat of the overflowed zinc melt heats the zinc ingots in the furnace chamber to gradually heat and melt the heat, and at the same time, heat is radiated from the overflowed zinc melt. All such inventions are included in the present invention as long as the method is such that the wall surface of the furnace chamber is dried by.

[Procedure Amendment 5]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 2

[Correction method] Change

[Correction content]

[Fig. 2]

Claims (1)

[Claims] 1. A furnace chamber made of a refractory so as to store molten zinc, an inductor having an inductor groove connected to a throat portion formed so as to penetrate through a lower portion of a peripheral surface of the furnace chamber, and A method for producing initial molten metal for galvanizing using an apparatus equipped with an induction heating device for heating an inductor to produce molten zinc in an inductor groove, comprising heating the inductor by the induction heating device and forming the inductor groove and After filling the throat portion with molten zinc, the throat portion is repeatedly supplied with zinc lumps to supply a part of the molten zinc with zinc lumps, and at the same time, the throat portion stores other zinc lumps in advance in the furnace chamber. The lump of zinc in the furnace chamber is heated by the heat of the spilled zinc melt to gradually heat and melt, and the heat of the spilled zinc melt radiates heat to the wall of the furnace chamber. A first hot water method for a grooved induction furnace for galvanizing, characterized in that the surface is dried.