JPH09324987A - Furnace constructing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a furnace constructing method, wherein a period necessary for installing a furnace can be shortened, a construction cost can be reduced, and a safety in constructing the furnace can be enhanced. SOLUTION: A furnace shell unit 14 is manufactured in a unit manufacturing factory, wherein a refractory lining 13 is applied to the inner surface of a steel- plate made shell 10 having a both open-ended cylindrical construction with an exception of joint mixture filling portions located at both ends of the shell 10. A plurality of furnace shell units 14 are transferred to an installation site and they are installed in series. The ends of the furnace shells 10 of the furnace shell units 14 which face each other are welded, while the joint mixture filling portions of the furnace shell units 14 which face each other are merged to define a joint mixture filling space 15 of a narrow width. An incombustible and resilient joint mixture is filled in the joint mixture filling space 15 to construct a furnace.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a furnace construction method capable of constructing various tunnel furnaces easily and in a short period of time.

[0002]

2. Description of the Related Art As shown in FIGS. 6 and 7, a long tunnel furnace B such as an annealing furnace usually has a furnace shell C made of a steel plate tubular body having openings at both ends, and an inner surface of the furnace shell C. A refractory lining D which is applied by sticking, spraying, or the like. The following three forms are known as a method for constructing such a tunnel furnace B. In addition, E is a steel strip.

In the first furnace construction method, as shown in FIG. 8, a steel plate 51 made of a large number of flat plates that can form a furnace shell 50 by connecting them to each other is manufactured in a manufacturing factory, and thereafter,
These steel plates 51 are transported to the installation site. And
At the installation site, as shown in FIG. 8A, the steel plates 51 are welded to each other to form the furnace shell 50, and
As shown in (b), a tunnel furnace is constructed by applying a refractory lining 52 to the inner surface of the furnace shell 50 by sticking or spraying.

In the second furnace construction method, as shown in FIG. 9, a furnace shell unit 53 made of a steel plate tubular body having openings at both ends is manufactured in a unit manufacturing factory, and then the furnace shell unit 5 is manufactured.
3 is transported to the installation site, and at the installation site,
The furnace shell units 53 are welded to each other, and then a refractory lining is applied to the inner surface thereof by sticking or spraying to construct a tunnel furnace.

The third furnace construction method is as shown in FIG.
In a unit manufacturing factory, a tubular body 5 made of a steel plate having both end openings similar to the furnace shell unit 53 in the second furnace construction method described above.
4 is manufactured, and a refractory lining 55 is partially applied to the inner surface of the tubular body 54 to manufacture the furnace shell unit 56. After that, the plurality of furnace shell units 56 are transported to the installation site, the opposite ends of the tubular body 54 made of steel plate are welded to each other, and then the refractory lining 57 is separately provided between the refractory linings 55. Build a tunnel furnace by sticking or spraying.

[0006]

However, when constructing a tunnel furnace, the above-mentioned conventional furnace construction methods still have the following problems to be solved. In the first furnace construction method, at the installation site, steel plates 51 are welded to each other to form a furnace shell 50, and a refractory lining 52 is applied to the inner surface of the furnace shell 50 by sticking or spraying to construct a tunnel furnace. Be fired. That is, in the first furnace construction method, it is necessary to perform all of the furnace construction work at the installation site. Therefore, during the peak period of the furnace construction work, there is congestion with other construction necessary for the installation work, and poor work conditions. Since the furnace construction work had to be performed below, it was not possible to shorten the construction period, reduce the cost of the furnace construction work, improve the quality of the furnace construction work, and improve the safety of the furnace construction work.

Further, in the second furnace construction method, the furnace shell unit 53 consisting of a tubular body made of a steel plate is manufactured in a unit manufacturing factory, and the refractory lining must be installed at the installation site, and therefore, Similar to the first furnace construction method, during the peak period of the furnace construction work, it is necessary to perform the furnace construction work under poor working conditions due to congestion with other constructions required for the furnace construction work. It was not possible to shorten the furnace construction cost, improve the quality of the furnace construction work, and improve the safety of the furnace construction work.

Further, in the third furnace construction method, in the unit manufacturing factory, the refractory lining 55 is partially applied to the inner surface of the tubular body 54 to manufacture the furnace shell unit 56, but the remaining refractory lining is manufactured. No. 57 must be constructed at the installation site. Therefore, as with the first furnace construction method, during the peak period of the furnace construction work, it is congested with other construction necessary for the furnace construction work, and poor work is performed. Since the furnace construction work had to be performed under the conditions, it was not possible to shorten the construction period, reduce the cost of the furnace construction work, improve the quality of the furnace construction work, and improve the safety of the furnace construction work. Further, in this case, the refractory lining construction work is required at two places, the unit manufacturing factory and the installation site, and the scaffolding work is duplicated, which poses a particular problem in the safety of the furnace construction work. This was the same in all other tunnel furnaces except the annealing furnace.

The present invention has been made in view of the above circumstances, and provides a furnace construction method capable of shortening the construction period, reducing the cost, improving the construction quality, and improving the safety in the installation work. The purpose is to provide.

[0010]

According to the present invention, there is provided a semiconductor device comprising:
The furnace construction method described is a unit of a furnace shell unit in which a refractory lining is provided on the inner surface of a steel shell made of a tubular body having openings at both ends, leaving a joint allowance formed at both end openings of the furnace shell. Produced in a manufacturing factory, transporting the plurality of furnace shell units to the installation site and installing them in series, welding the opposite furnace shell ends of the furnace shell units together, and between the facing refractory lining ends. A joint space having a narrow width is formed by combining the joint margins, and the joint space is filled with a non-combustible and elastic filler to construct a furnace.

According to a second aspect of the present invention, in a furnace construction method, a refractory lining is applied to an inner surface of a steel plate furnace shell made of a tubular body having openings at both ends, leaving a joint allowance formed at the openings at both ends of the furnace shell. Together with the joint cost, a furnace shell unit in which a non-combustible and elastic filler is joined is manufactured in a unit manufacturing factory, and the plurality of furnace shell units are transported to the installation site and installed in series, facing each other. The furnace shell ends are welded together, and the fillers joined to the joint margin formed on the facing refractory lining ends are joined together to construct a furnace. A furnace construction method according to a third aspect is the furnace construction method according to the first or second aspect, wherein a ceramic packing is used as a non-combustible and elastic filler.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Next, referring to the attached drawings, an embodiment in which the present invention is embodied will be described to provide an understanding of the present invention.

A furnace construction method according to an embodiment of the present invention is
It is performed as follows. First, as shown in FIG. 1, at a unit manufacturing factory, a furnace shell 10 made of a steel plate and made of a tubular body having openings at both ends is manufactured. Then, as shown in FIG.
Joint surface 1 formed on both inner surfaces of the furnace shell 10 at both end openings
Refractory lining 13 is attached, sprayed, or cast to leave furnace shell units 1 and 12 (see FIG. 4).
4 is formed.

These furnace shell units 14 are manufactured in the unit manufacturing factory and transported to the installation site in the number required to construct the continuous annealing furnace A having a desired length as shown in FIG.

At the installation site, these furnace shell units 14 are installed in series as shown in FIG.
As shown in FIG. 3, the opposite ends of the furnace shell 10 of each furnace shell unit 14 are welded to each other. In addition, in FIG. 4, the welding location is indicated by W.

After that, in the narrow joint space 15 formed by the joining of the joint allowances 11 and 12 between the ends of the refractory lining 13, as shown in FIG. 5, a non-combustible and elastic filler. The continuous annealing furnace A is constructed by filling 16. Here, the non-combustible and elastic filler 16 absorbs thermal expansion of the refractory lining 13 and is filled between the end portions of the refractory lining 13. As such a filler 16, for example, a ceramic packing can be used. In this case, the filling operation of the filling material 16 can be performed easily and quickly.

As described above, in the present embodiment, the furnace shell 10
All construction work of the refractory lining 13 is performed in the unit manufacturing factory, and at the installation site, the furnace shell 10
Since they are simply connected to each other, it is possible to reduce the construction period, the cost, the construction quality, and the safety in the installation work.

Further, the non-combustible and elastic filler 16
By filling the space between the end portions of the refractory lining 13, it is possible to absorb the thermal expansion of the refractory lining 13 and reliably prevent breakage accidents due to excessive stress in the refractory lining 13.

Although the method of filling the joint space 15 with the non-combustible and elastic filler 16 at the installation site has been described here, the joint margin 11 of each furnace shell unit 14 is previously prepared in the unit manufacturing factory. The filler 16 may be bonded to 12 parts. By doing so, only the work of joining the furnace shell units 14 at the installation site can be performed, and the work at the installation site can be further reduced.

As described above, the present invention has been described with reference to one embodiment. However, the present invention is not limited to the configuration described in the above embodiment, and is described in the claims. It also includes other embodiments and modifications that can be considered within the scope of the matters described.

[0021]

According to the furnace construction method of the first aspect of the present invention, the refractory lining is formed on the inner surface of the steel shell made of a tubular body having openings at both ends, leaving a joint allowance formed at the openings at both ends of the furnace shell. The furnace shell unit that has been subjected to the above is manufactured in a unit manufacturing factory, and the plurality of furnace shell units are transported to the installation site and installed in series, the opposite furnace shell ends of the furnace shell units are welded together, and the refractory materials facing each other are installed. Forming a narrow joint space by merging joint joints between the lining ends,
A furnace is constructed by filling the joint space with a non-combustible and elastic filler.

Therefore, all the refractory lining construction work on the furnace shell can be performed in the unit manufacturing factory, and at the installation site, the furnace shells can be practically simply connected by welding. In the above, it is possible to shorten the construction period, reduce the cost, improve the construction quality, and improve the safety.

In the furnace construction method according to the second aspect of the present invention, a refractory lining is applied to the inner surface of the steel plate shell made of a tubular body having openings at both ends, leaving a joint allowance formed at the openings at both ends of the furnace shell. At the same time, a furnace shell unit with non-combustible and elastic filler jointed to the joint cost was manufactured at the unit manufacturing factory, and multiple furnace shell units were transported to the installation site and installed in series, and the furnace shell units facing each other were installed. The ends are welded together, and the fillers joined to the joint margin formed at the facing end of the refractory lining are joined together to construct a furnace.

By doing so, only the work of joining the furnace shell units is done at the installation site, and the work at the installation site can be further reduced as compared with the furnace construction method according to the first aspect.

By filling the non-combustible and elastic filler between the end portions of the refractory lining, the thermal expansion of the refractory lining is absorbed, and damage to the refractory lining due to excessive stress is prevented. It can be surely prevented.

Particularly, in the furnace building method according to claim 3, in the furnace building method according to claim 1 or 2, by using a ceramic packing as the non-combustible and elastic filler, the filling work of the filler is performed. Alternatively, the joining work can be performed easily and quickly.

[Brief description of drawings]

FIG. 1 is a perspective view of a furnace shell unit that can be preferably used in a furnace construction method according to an embodiment of the present invention.

FIG. 2 is a transverse sectional view of the furnace shell unit.

FIG. 3 is a perspective view of a continuous annealing furnace constructed by connecting the furnace shell units together.

FIG. 4 is a perspective view showing a work procedure of the furnace construction method according to the embodiment of the present invention.

FIG. 5 is a perspective view showing another operation procedure.

FIG. 6 is a perspective view showing a conceptual configuration of a continuous annealing furnace.

FIG. 7 is a sectional view of the same.

FIG. 8 is a perspective view showing a work procedure of a first conventional furnace building method.

FIG. 9 is an explanatory diagram showing a work procedure of a second conventional furnace building method.

FIG. 10 is an explanatory diagram showing a work procedure of a third conventional furnace building method.

[Explanation of symbols]

A Continuous annealing furnace W Welding point 10 Furnace shell 11 Joint cost 12 Joint cost 13 Refractory lining 14 Furnace shell unit 15 Joint space 16 Filler

Claims (3)

[Claims] 1. A unit manufacturing plant of a furnace shell unit in which a refractory lining is provided on the inner surface of a steel plate furnace shell made of a tubular body with openings at both ends, leaving a joint allowance formed at the openings at both ends of the furnace shell. The plurality of furnace shell units are transported to the installation site and installed in series, the opposite furnace shell ends of the furnace shell unit are welded together, and the joints are provided between the facing refractory lining ends. A furnace-building method, characterized in that a joint space having a narrow width is formed by combining the margins, and the joint space is filled with a non-combustible and elastic filler. 2. A refractory lining is provided on the inner surface of a steel plate furnace shell made of a tubular body having openings at both ends, leaving a joint allowance formed at both end openings of the furnace shell, and the joint joint is non-combustible A furnace shell unit joined with a filler having elasticity is manufactured at a unit manufacturing factory, the plurality of furnace shell units are transported to the installation site and installed in series, and the opposite ends of the furnace shell units are welded to each other. In addition, the furnace construction method is characterized in that the furnace is constructed by combining the fillers joined to the joint margin formed at the end portions of the refractory linings that face each other. 3. The furnace construction method according to claim 1, wherein a ceramic packing is used as the nonflammable and elastic filler.