Positioning method for cast bolt

Abstract

The invention discloses a cast bolt positioning method, which comprises the following steps of: 1, when a wood model for forming a cooling wall body is manufactured, reserving a mounting position hole for a cast bolt in a screw table chess piece of the wood model; secondly, a cast bolt positioning wood block is manufactured, a cast bolt positioning hole is formed in the cast bolt positioning wood block, and the cast bolt positioning hole is inclined according to requirements; the casting bolt positioning wood blocks are inserted into the mounting position holes; and thirdly, the tail end of a casting bolt is inserted into the casting bolt positioning hole, and after the casting bolt is installed, shakeout molding is conducted, so that the position and the angle between the casting bolt and the cooling wall body are not changed. By improving the casting process, the casting angle and position of the cast bolt are guaranteed, and economic benefits are greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of casting, and in particular to a positioning method for a casting bolt. Background Art

[0002] The blast furnace cooling stave is a cast iron part used in the blast furnace to cool the furnace body. It is usually fixed to the furnace shell by fixing bolts. Usually, the bolt holes 11 are cast on the cooling stave body 10. When it is installed on the furnace shell 20 of the blast furnace, it is only necessary to pass the standard bolts 40 through the bolt holes 11 and the furnace shell openings 21 and tighten the nuts 30 (such as Figure 1 However, some cooling stave bodies 10 need to cast the casting bolts 40a directly into the cooling stave body 10 (such as Figure 2 ), and the casting bolt 40a usually has a certain angle with the cooling wall body 10, so the positioning and fixing of the casting bolt 40a is particularly important.

[0003] The traditional casting process is to put the casting bolt 40a into the sand mold. During the casting process, the casting bolt 40a may deviate downward, and the angle is difficult to control. In severe cases, the casting bolt 40a on the cooling wall body 10 may be offset, which makes it difficult to install the cooling wall body 10. If this problem is to be solved, it is necessary to expand the hole on the furnace shell, which increases the installation cost and causes economic waste. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a method for positioning a cast bolt to solve the problem of position deviation of the cast bolt cast on the cooling wall body, which makes it difficult to install the cooling wall body.

[0005] The technical problem to be solved by the present invention can be achieved by the following technical solutions:

[0006] A method for positioning a cast bolt comprises the following steps:

[0007] Step 1: When making a wooden model of the cooling wall body, a hole for installing the casting bolt is reserved on the screw base of the wooden model;

[0008] Step 2: making a casting bolt positioning wooden block, in which a casting bolt positioning hole is provided, and the casting bolt positioning hole is sloped as required; the casting bolt positioning wooden block is inserted into the installation position hole;

[0009] Step 3: insert the tail end of the casting bolt into the casting bolt positioning hole, install the casting bolt, and perform sand removal molding to ensure that the position and angle between the casting bolt and the cooling wall body remain unchanged.

[0010] In a preferred embodiment of the present invention, a draft angle is left between the cast bolt positioning wooden block and the installation position hole.

[0011] In a preferred embodiment of the present invention, the cast bolt positioning wood block is divided into two.

[0012] Due to the adoption of the above technical solution, the present invention improves the casting process, ensures the casting angle and position of the casting bolts, and greatly improves the economic benefits. If the cooling wall cannot be smoothly installed on the blast furnace shell due to the problem of casting bolts, the shell needs to be expanded. According to the expansion cost of 10,000 yuan per piece, 1 cooling wall has about 3 holes, and the loss cost is 10,000*3=30,000 yuan. The production cost of the cooling wall is greatly increased and the labor efficiency is reduced. The present invention avoids scrapping due to casting bolts, so it can save production costs. A cooling wall of about 2.5 tons can save at least about 10,000 yuan. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of an existing cooler body being installed on a furnace shell of a blast furnace.

[0014] Figure 2 It is a schematic diagram of the existing cast bolt 4 being directly cast into the cooling wall body.

[0015] Figure 3 It is a front view of the positioning method of the casting bolt of the present invention.

[0016] Figure 4 for Figure 3 Top view of the . DETAILED DESCRIPTION

[0017] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0018] See also Figure 3 and Figure 4 , a method for positioning a casting bolt as shown in the figure comprises the following steps:

[0019] Step 1: When making a wooden model 50 of the cooling wall body, a mounting position hole 52 for a casting bolt is reserved on the screw base chess piece 51 of the wooden model 50;

[0020] Step 2: Make a cast bolt positioning wooden block 60, in which a cast bolt positioning hole 61 is provided, and the cast bolt positioning hole 61 is made inclined as required; the cast bolt positioning wooden block 60 is inserted into the installation position hole 52; in order to facilitate demolding, the cast bolt positioning wooden block 60 is divided into two, and a demolding slope is left between the cast bolt positioning wooden block 60 and the installation position hole 52.

[0021] Step 3: insert the tail end of the casting bolt 40a into the casting bolt positioning hole 61. After the casting bolt 40a is installed, sand-cutting is performed to make the position and angle between the casting bolt 40a and the cooling wall body remain unchanged.

Claims

1. A method for positioning a cast bolt, characterized in that: The steps include: Step 1: When making a wooden model of the cooling wall body, a hole for installing the casting bolt is reserved on the screw base of the wooden model; Step 2: making a casting bolt positioning wooden block, in which a casting bolt positioning hole is provided, and the casting bolt positioning hole is sloped as required; the casting bolt positioning wooden block is inserted into the installation position hole; Step 3: insert the tail end of the casting bolt into the casting bolt positioning hole, install the casting bolt, and perform sand removal molding to ensure that the position and angle between the casting bolt and the cooling wall body remain unchanged.

2. A method for positioning a cast bolt according to claim 1, characterized in that: A draft angle is left between the casting bolt positioning wooden block and the installation position hole.

3. A method for positioning a cast bolt according to claim 1 or 2, characterized in that: The cast bolt positions the wood block in two.

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