JP5709581B2 - Stud and its mounting method - Google Patents

Description

  TECHNICAL FIELD The present invention relates to a converter, a ladle, a container for containing molten metal, a construction of a refractory lined in a high-temperature kiln, or the like, and preferably a stud mounting method used for repairing a damaged portion of the refractory by spraying.

  Studs are used to hold refractories and prevent peeling, and are made of steel, usually Y-shaped, V-shaped, etc., and welded to the iron skin. An irregular refractory is poured into

  Even in the case of repairing a damaged part of a refractory by spraying, an irregular refractory is sprayed after attaching a stud to the iron skin of the damaged part, and the mounting work by welding the stud is performed in a container.

  A method is also known in which a hole is made in an iron skin, and a stud is inserted and attached from the outside of the container through the hole. Patent Document 1 inserts a stud whose tip is bound by a string into a container through a hole made in the iron skin. However, when the string is burned out by heat, the stud tip is expanded, Patent Document 2 discloses a metal cylinder whose tip can be expanded, a bolt inserted into the cylinder, and a cylinder. A stud is disclosed which comprises a wedge body that is screwed into a bolt end protruding from the body, and is inserted into a hole drilled in an iron skin, and then the bolt is rotated to push the wedge body into the end of the cylindrical body for expansion. ing.

JP 61-72991 A Japanese Patent Publication No.61-10653

  Since the studs disclosed in Patent Documents 1 and 2 can be removed from the outside of the container, even after the molten metal is poured out, the container is not sufficiently cooled and is maintained even at a high temperature. And the stud has the advantage that the diameter of the hole in the iron skin can be reduced since the tip is expanded after being inserted into the hole in the iron skin. It is generally complicated, and it is necessary to bind it with a string or to screw a bolt.

  An object of the present invention is to provide a stud mounting method that is simple in structure and easy in mounting work without impairing the above advantages.

The invention according to claim 1 is a stud used when constructing a refractory lined in a molten metal container or repairing a damaged part of the refractory, and is inserted through a hole formed in an iron skin outside the container. And after passing a stud made of a rigid rod whose tip passed through the hole is bent or refracted through a hole made in the iron skin from the tip, another stud or a plurality of studs are passed through the hole. Washers through which the studs are passed through by pushing in with changing the direction one by one, and after assembling a plurality of studs in the same hole, the base part on the iron skin side of each stud is applied to the iron skin or the iron skin, respectively. It adheres to by welding .

The stud of the present invention can be attached from the outside of the container through a hole drilled in the iron shell, and is suitable for repairing a damaged part of a refractory in a high temperature container. The refracting stud need only be of a size that allows it to pass through while changing its direction, can be made relatively small in diameter, and the stud is composed of a single rod of a rigid body whose tip is bent or refracted, and its configuration is simple and mounting Work is done by inserting the studs one by one into the holes made in the iron shell one after another, and after insertion, it only has to be applied to the iron skin or the iron skin and welded to the washer through which the stud base is passed. There are effects such as being easy.

The top view of the stud concerning this invention. The figure which shows an aspect when inserting the stud shown in FIG. 1 in the hole drilled in the iron skin. The figure which shows the state after insertion. The figure which shows the state which assembled | attached a pair of stud in Y shape.

Hereinafter, a stud used in an embodiment of the present invention will be described with reference to the drawings.
A stud 1 shown in FIG. 1 includes a base 1a that is longer than the thickness of an iron skin 2 and a washer 4 described later, a tip 1b that is obliquely refracted at an obtuse angle θ with the base 1a, and the tip 1b. The base part is refracted into an L shape from the end of the base part, and is composed of a mounting part 1c shorter than the radius of a washer 4 to be described later. The whole is composed of a steel rigid rod.

FIG. 2 shows a reference example when the stud 1 shown in FIG. 1 is passed through the hole 3 formed in the iron skin 2 of the container in which the molten metal is put, and the washer 4 is applied to the outer side of the iron skin around the hole 3. After that, the mounting portion 1c is grasped and the stud 1 is inserted into the hole 3 from the tip portion 1b. At the time of insertion, if supported by the refracting part or hole edge of the stud 1, the stud 1 is pushed in while changing its direction. FIG. 3 shows the state after insertion.

  FIG. 4 shows that the inner diameter of the hole 6 formed in the iron skin 2 is slightly larger than the hole 3 and the stud 1 is passed through, and then another stud 1 ′ is inserted through the gap of the hole 6 through the stud 1. Like the stud 1, it shows a state where the studs 1, 1 ′ protruding from the iron skin 2 are assembled in a Y-shape with a bilateral symmetry, after being pushed in while changing the direction. After assembling to the iron shell 2 in the state shown in FIG. 3 or FIG. 4, the mounting portion 1c is fixed to the washer 4 by welding.

  In the studs 1 and 1 ', the base 1a and the tip 1b are refracted at an obtuse angle θ, but the angle θ may be a right angle or an acute angle. As the angle θ decreases, the diameter of the holes 3 and 6 needs to be increased so that they are not supported by the holes 3 and 6.

  The studs 1 and 1 'are provided with a mounting portion 1c, but the mounting portion 1c may be omitted. In this case, the base end is welded to the washer 4.

  In the above-described embodiment, the washer 4 is applied to the iron shell 2 so as to close the gap of the hole 3 through the studs 1 and 1 ′. However, the washer 4 may be omitted. In this case, the attachment portion 1c is fixed to the iron skin 2 by welding.

  In the embodiment shown in FIG. 4, the pair of studs 1, 1 ′ are assembled in a right and left object shape, but in another embodiment, three studs are sequentially placed one by one in the hole 6 formed in the iron skin 2. After being pushed in, the tip is assembled in a trifurcated shape. It is also possible to assemble by pushing four or more studs into the hole 6.

  The above-described studs 1 and 1 ′ are attached to the iron shell at the place where the refractory is damaged or when the refractory is damaged. In the former case, the studs 1 and 1 ′ are attached to the iron skin 2. After fixing, a mold is built in the container, and an indeterminate refractory is poured into the container. FIG. 4 shows the irregular refractory 7 after construction. In the latter case, where the refractory is repaired, an irregular refractory is sprayed after the stud is attached.

1, 1 '·· Stud 1a · · Base 1b · · Tip 1c · · Mounting portion 2 · Iron skin 3, 6 · · · hole 4 · · · Washer 7 · · · irregular refractory

Claims (1)

Stud used to construct a refractory lined on a molten metal container or repair a damaged part of the refractory, and can be passed through a hole in the iron skin outside the container. After passing a stud made of a rigid rod whose tip is bent or refracted through a hole in the iron skin, another one or more studs are pushed through the hole one by one while changing the direction, and the same After assembling a plurality of studs in the hole, the base part on the iron skin side of each stud is applied to the iron skin or the iron skin and fixed to the washer through which each stud base part is welded. Stud mounting method.