JP2696019B2 - First hot water method of channel induction furnace for galvanizing - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for initial hot-rolling of a channel induction furnace for galvanizing, and more particularly to a method for initial hot-rolling of a channel induction furnace for galvanizing which simplifies the operation of the initial hot-rolling.

[0002]

2. Description of the Related Art A conventional method of this kind has been performed by using, for example, an apparatus shown in FIG. Prior to the description of the conventional hot-melt work, first, an apparatus used for the work will be described with reference to FIG. 2. As shown in FIG. Furnace chamber 11 formed of refractory so as to store
An inductor 12 formed with an inductor groove 12A connected to a throat portion 11A penetrating a lower portion of the furnace chamber 11,
Prior to the supply of the first zinc bath, the inside of the furnace chamber 11 is heated and the furnace chamber 1 is heated.
The furnace includes a burner 13 for drying the inner wall surface and a cover 14 for closing an upper opening of the furnace chamber 11. Further, a holding pot 30 with a heating device (not shown) for melting zinc and storing and holding the molten metal 20 is adjacent to the channel-shaped induction furnace 10 for galvanizing, and is stored in the holding pot 30. The molten metal 20 is supplied to the grooved induction furnace 1 for galvanizing through a supply pump 40 and a communication pipe 41.
It is configured to supply the molten metal 20 as the first molten metal.

[0003] In order to perform the first hot water work using the above apparatus,
First, the furnace chamber 11 is heated by the burner 13 to heat and dry the furnace chamber 11 and the inductor 12 in advance, and the moisture impregnated in the refractory that forms the furnace chamber 11 by heating both the furnaces 11 and 12 is heated. Is evaporated from the refractory to remove water in advance. 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 zinc-plated induction furnace 10 through the pump 40 and the communication pipe 41 as the first molten metal. Then, the first hot water work is completed.

[0004] In performing the above-mentioned first melting operation, the molten metal 2 is suddenly transferred from the holding pot 30 to the galvanized channel induction furnace 10 without preheating the galvanized channel 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 evaporates rapidly from the refractory to melt the molten metal. Since there is a possibility that an explosion phenomenon may be caused to blow up all at once, in order to perform the first hot bath operation, the grooved induction furnace for galvanizing 10 is preheated before supplying the first hot bath as described above.

[0005]

However, conventionally, in the first melting operation, 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 are used.
Pump 40 is required to supply the gas to the furnace chamber 11.
There was a problem that it was necessary other than.

[0006] As a technique relating to this type of grooved induction heating furnace, for example, Japanese Patent Application Laid-Open No. 63-129293,
JP-A-55-12339 and JP-A-59-929.
There is a technology described in Japanese Patent Publication No. 8; however, the former two are related to a method for repairing a furnace room, and the other is merely a technology for improving the convenience of hot water temperature measurement at the time of a first hot bath. None of these are intended to make the equipment necessary for the first bath operation compact.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and there is provided a method for first hot water for a galvanized induction furnace for galvanizing, which can eliminate a holding pot and a pump, and can save equipment costs and installation space. It is intended to provide.

[0008]

Means for Solving the Problems] Hatsuyu method of galvanizing groove type induction furnace of the present invention, the inductor groove and throat
After heating and drying the inductor with an induction heating device to fill the inductor groove and the throat with the molten zinc, the zinc throat is repeatedly supplied to the throat and a part of the molten zinc is supplied along with the supply of the zinc lump to the throat. From the furnace chamber where other zinc lump is stored in advance, and the zinc lump in the furnace chamber is heated and gradually melted by the heat of the overflowed molten zinc, and the molten zinc from the overflowed molten zinc The wall surface of the furnace chamber is dried by heat radiation.

[0009]

According to the present invention, an inductor groove and a throat are provided.
Heating and drying the part, heating the inductor with an induction heating device to make molten zinc in the inductor groove and throat part and filling them with zinc molten metal, and then repeatedly supplying zinc lump to the throat part, a part of the molten zinc With the supply of the zinc lump, the zinc lump repeatedly overflows from the throat section into the furnace chamber in which another zinc lump is previously stored, and the overflowed molten zinc heats the zinc lump in the furnace chamber by the latent heat and gradually heats and melts the zinc lump. The wall surface of the furnace chamber can be dried by 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 a method for initial hot-rolling of a grooved induction furnace for galvanizing of the present invention.

First, a description will be given of a galvanized channel induction furnace 10 preferably used in an embodiment of a method for initializing a galvanized channel induction furnace of the present invention. As shown in FIG. 1, the present galvanized channel induction furnace 10 includes a furnace chamber 11 formed of a refractory so as to store a molten metal of zinc, and a furnace chamber 1.
An inductor 12 having an inductor groove 12A connected to a throat portion 11A penetrating a lower portion of the first wall;
It is provided with a conventionally known induction heating device (not shown) for induction heating the inductor 12.

Thus, the above-described grooved induction furnace for galvanizing 10
When the first hot water work is performed using the method, first, only the inductor 12 and the throat portion 11A are partially heated by the induction heating device, and these portions are heated and dried.
800 kg of molten zinc 20 is supplied and inductor 1
2 and the throat portion 11A, the molten zinc 2
0, the temperature of the inductor groove 12A and the throat portion 1 are increased.
1A can be filled with the molten zinc 20.

Thereafter, when a zinc lump, for example, 20 kg of zinc ingot 21 is repeatedly supplied into the throat portion 11A, the zinc molten metal 20 is supplied from the throat portion 11A in advance by the volume of the zinc ingot every time the ingot 21 is supplied. The lump (for example, a 1000 kg zinc ingot) 22 repeatedly overflows into the furnace chamber 11 in which the lump is stored. Initially, the overflowed molten zinc 20 is deprived of latent heat by the ingot 22 in the furnace chamber 11 and solidified, and at the same time, the inside of the furnace chamber 11 is heated by the heat radiation to dry the wall of the furnace chamber 11 though slightly. Let it. On the other hand, the ingot 21 supplied into the throat portion 11A melts by the heating by the induction heating device and replenishes only the molten zinc 20 which overflows.

As the molten zinc 20 overflows as described above, the latent heat of the molten zinc 20 gradually raises the temperature of the ingot 22 in the furnace chamber 11 and melts it. The wall surface (refractory) of the furnace chamber 11 is gradually heated by the heat release of the latent heat from the molten metal 20 to evaporate the moisture and gradually dry the refractory. As this drying proceeds, almost no water evaporates from the refractory. When the temperature of the wall of the furnace chamber 11 rises in this way, the molten zinc 2
Even if 0 is in contact, there is no blow-up of the molten zinc caused by the moisture of the refractory, and the refractory is not damaged by the thermal shock of the molten zinc 20.

As described above, if the supply of the ingot 21 is repeated and the amount of the molten zinc 20 increases in the furnace chamber 11, the ingot 22 is successively charged into the furnace chamber 11, whereby the furnace chamber 11 is filled. Filling with the molten zinc allows the molten zinc to be supplied 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 ingot 2 is inserted into the throat portion 11A.
1 to supply the molten zinc 2 from the throat 11A.
0 is repeatedly supplied into the furnace chamber 11 while the first molten metal is gradually formed in the furnace chamber 11 and the molten zinc 2
Since the refractory material forming the furnace chamber 11 is heated by using the latent heat of 0 to gradually increase the temperature to dry the refractory material, a conventional holding pot or pump is not required, so that those materials are not required. Equipment costs and installation space can be saved.

It should be noted that the present invention is not limited to the above-described embodiment at all, and the point is that the inductor groove and the throat portion are not limited.
After heating and drying , the inductor is heated by the induction heating device, and the inductor groove and the throat portion are filled with the molten zinc, and then the zinc mass is repeatedly supplied to the throat portion, and a part of the molten zinc is supplied from the throat portion along with the supply of the zinc mass. It repeatedly overflows into the furnace chamber in which another zinc lump is stored in advance, and the zinc lump in the furnace chamber is heated and gradually melted by the heat of the overflowed zinc melt, and heat is radiated from the overflowed zinc melt. If the method is such that the wall of the furnace chamber is dried by the method, all such 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 zinc-plated grooved induction furnace, which can eliminate a holding pot and a pump, and can save equipment costs and installation space.

[Brief description of the drawings]

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 a method for initial setting of a grooved induction furnace for galvanizing of the present invention.

FIG. 2 is a cross-sectional view illustrating a conventional channel-shaped induction furnace for galvanizing and an apparatus for supplying a first bath of zinc.

[Explanation of symbols]

 Reference Signs List 10 grooved induction furnace for galvanizing 11 furnace chamber 11A throat section 12 inductor 12A inductor groove 20 molten zinc 21 zinc ingot (zinc lump) 22 zinc ingot (zinc lump)

Claims (1)

(57) [Claims] 1. A furnace chamber formed of a refractory so as to store a molten zinc, an inductor connected to a throat portion formed through a lower part of a peripheral surface of the furnace chamber so that an inductor groove is continuous with the furnace chamber, and heating the inductor to a method of making a Hatsuyu for galvanizing using a device with an induction heating device for making the zinc melt in the inductor groove, the inductor
The groove and the throat portion are heated and dried, and the inductor is heated by the induction heating device to fill the inductor groove and the throat portion with molten zinc. A part of the zinc lump is repeatedly overflowed from the throat portion into the furnace chamber in which another zinc lump is stored in advance together with the supply of the zinc lump, and the zinc lump in the furnace chamber is gradually heated by the heat of the overflowed molten zinc. A method of drying a wall of a furnace chamber by radiating heat from an overflowing molten zinc and drying the wall of the furnace chamber.