JPS6056025A - Construction of wall of continuous annealing furnace - Google Patents

Abstract

PURPOSE:To support stably heater elements by supporting and fixing hanger bricks to supports fixed to the shell of the outside wall of a furnace so as to project into the furnace thereby holding the heater elements. CONSTITUTION:A continuous annealing furnace is disposed with a shell 1 on the outside wall thereof and is lined internally with fiber lining 2. A steel box 7 attached with tension fittings 8 is fixed to the shell 1 and hanger bricks 5 are held thereto. Heater elements 3 are disposed at a prescribed interval to the bricks 5 along the wall of the furnace Protector bricks 6 are held by means of steel racks 9 attached with thension fittings 10 to avoid contact to the heaters 3 with the fiber protecting plates 4 in the furnace.

Description

[Detailed description of the invention] The present invention relates to a furnace wall structure of a continuous annealing furnace.

In recent years, fiber-based linings have been used not only in continuous annealing furnaces but also in various furnaces for the purpose of energy saving and quality improvement. When using a heater, it is difficult to provide stable support using only the tensile metal support method used in brick-lined furnaces.

In addition, in the case of fiber lining, a steel protection plate is installed inside the furnace to protect the fiber and prevent plate defects due to falling fiber shot, but due to deformation of the element, this protection plate and the element may come into contact with each other. There is a risk of electrical leakage.

On the other hand, a continuous annealing furnace is required to have a uniform temperature distribution, and its operation requires strict management.

The present invention solves two problems, and the gist is that in a continuous annealing furnace lined with a fiber-based lining and equipped with a heater element, a support fixed to the steel shell of the outer wall of the furnace is used. The heating element is supported and fixed by supporting and fixing bricks protruding into the furnace, and a protective plate is provided on the fiber lining surface, and a protective plate is provided on the iron skin. A steel shelf is fixed, and a protector brick is installed inside this shelf.
The purpose is to prevent the heating element from coming into contact with the furnace wall.

The present invention will be explained below with reference to the drawings.

FIG. 1 is a side view of the present invention, and FIG. 2 is a front view of the present invention. In the present invention, in a furnace using a fiber-lined heating element, the bricks for supporting the element are housed and held in a steel box fitted with tension hardware. That is, the continuous annealing furnace of the present invention has an iron skin 1 disposed on the outer wall, and a fiber lining 2 lined inside. Although the fiber lining 2 may be made of refractory bricks partially on the inside of the furnace, it is preferable that the inside surface of the furnace is made of fibers.

A support, for example, a steel box 7, is fixed to the iron skin 1, and the hanger brick 5 is held therein at a temperature of 0.degree. The hanger bricks 5 are provided at desired intervals so that the heater element 3 is disposed along the furnace wall.

In the example of the present invention, the heater can be stably supported by housing the hanger brick 5 for supporting the element heater in a steel box 7 to which tension hardware 8 is attached.

Further, in the present invention, a refractory material for a protector is provided so that the element does not come into contact with a steel protection plate provided in the furnace in order to protect the fiber and prevent the fiber shot from falling.

That is, in the present invention, the protector brick 6 is held by the steel shelf 9 to which the tension hardware 10 is attached so that the element heater 3 does not come into contact with the fiber protection plate 4 in the furnace.
to be placed. When the fiber lining is exposed to high temperatures for a long time, it will form fine particles that will fall and adhere to the copper strip, forming pit-like flaws, which will reduce the commercial value of the product.

In the present invention, in order to prevent this drawback, the lining surface is protected with a steel protection plate, and a protector brick is provided to prevent electric leakage accidents that may occur due to contact between the heater 1 and the protection plate. did. That is, since the steel shelf having the tension hardware 1o is insulated by installing the protector bricks 6 therein, the above-mentioned concerns can be solved.

As described above, in the case of the present invention, in the conventional continuous annealing furnace lined with refractory bricks, pit-like flaws were formed on the steel strip due to refractory powder, but this can be eliminated by using the fiber-based lining.
In addition to preventing product scratches, maintenance management of the heater element is easy, and its industrial effects are large.

[Brief explanation of drawings]

FIG. 1 is a side view of the present invention, and FIG. 2 is a front view of the present invention. 1: Iron shell 2: Fiber lining 3: Element heater 4: Protective plate 5: Hanger brick 6: Protector brick 7: Steel box for holding Hanger brick 8: Hanger brick tension hardware 9: Steel shelf for holding protector brick 10: Brick tension hardware for protector

Claims (1)

[Claims] 1. In a continuous annealing furnace lined with a fiber i-based lining and provided with a heating element, a hanger brick that locks the heating element inside the furnace to a support integrated with the iron skin of the furnace outer wall. A furnace wall structure of a continuous annealing furnace characterized by a fixed installation of. 2. In a continuous annealing furnace lined with fiber lining and equipped with a heating element, a hanger brick that protrudes into the furnace and locks onto the heating element is fixed to a support that is integrated with the iron skin of the outer wall of the furnace. Further, a furnace wall structure of a continuous annealing furnace, characterized in that a protector brick is arranged on a steel shelf integrated with the steel shell, and a protection plate is further arranged on the fiber lining surface.