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Manufacturing method of compound type blast furnace material distributing chute

A technology of distributing chute and manufacturing method, which is applied in the direction of manufacturing tools, non-electric welding equipment, welding equipment, etc., and can solve problems such as chute failure

Inactive Publication Date: 2013-02-13
武汉钢铁有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to solve the failure problem of the chute, and provide a method for manufacturing the composite blast furnace material distribution chute by adopting the explosive welding method to firmly combine the wear-resistant plate and the high-temperature resistant plate of the chute, and effectively improve the service life of the chute

Method used

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  • Manufacturing method of compound type blast furnace material distributing chute

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Comparison scheme
Effect test

Embodiment 1

[0025] A method for manufacturing a composite blast furnace distribution chute, the steps of which are:

[0026] 1) Select the materials of wear-resistant plate 1 and high-temperature resistant plate 2: the hardness HRC of wear-resistant plate 1 is 60, and the high-temperature resistant plate 2 is 660°C steel plate, which is processed according to the required size of the chute;

[0027] 2) Shot peening and roughening the joint surface of the wear-resistant plate 1 and the high-temperature resistant plate 2 processed above to make the roughness uniform;

[0028] 3) Place the gap support rod 3 at the four corners of the wear-resistant plate 1, cover the upper end of the gap support rod 3 with the high-temperature resistant plate 2, and form a gap 4 between the wear-resistant plate 1 and the high-temperature resistant plate 2; the gap support rod 3 The height of the gap or the height of the gap 4 is 1 times the thickness of the high temperature resistant plate 2. Processing or s...

Embodiment 2

[0035] A method for manufacturing a composite blast furnace distribution chute, the steps of which are:

[0036] 1) Select the materials of wear-resistant plate 1 and high-temperature resistant plate 2: the hardness HRC of wear-resistant plate 1 is 58, and the high-temperature resistant steel plate of high-temperature resistant plate 2 is 680°C, and processed according to the required size of the chute;

[0037] 2) Shot peening and roughening the joint surface of the wear-resistant plate 1 and the high-temperature resistant plate 2 processed above to make the roughness uniform;

[0038] 3) Place the gap support rod 3 at the four corners of the high temperature resistant plate 2, cover the upper end of the wear resistant plate 1 on the gap support rod 3, and form a gap 4 between the wear resistant plate 1 and the high temperature resistant plate 2; the gap support rod 3 The height of the gap or the height of the gap 4 is 1.5 times the thickness of the wear plate 1. Processing o...

Embodiment 3

[0045] A method for manufacturing a composite blast furnace distribution chute, the steps of which are:

[0046] 1) Select the materials of wear-resistant plate 1 and high-temperature resistant plate 2: the hardness HRC of wear-resistant plate 1 is 56, and the high-temperature resistant plate 2 is 690°C steel plate, which is processed according to the required size of the chute;

[0047] 2) Shot peening and roughening the joint surface of the wear-resistant plate 1 and the high-temperature resistant plate 2 processed above to make the roughness uniform;

[0048] 3) Place the gap support rod 3 at the four corners of the high temperature resistant plate 2, cover the upper end of the wear resistant plate 1 on the gap support rod 3, and form a gap 4 between the wear resistant plate 1 and the high temperature resistant plate 2; the gap support rod 3 The height of the gap or the height of the gap 4 is set or processed twice the thickness of the wear plate 1;

[0049] 4) Lay explosi...

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Abstract

The invention provides a manufacturing method of a compound type blast furnace material distributing chute. The manufacturing method comprises the following steps of: selecting a wear-resisting plate and a high-temperature-resisting plate material, wherein the hardness HRC of a wear-resisting material is not lower than 55 and a high-temperature-resisting plate can resist the high temperature of at least 650 DEG C; machining according to a size; carrying out roughening treatment on a combined face of the machined wear-resisting plate and the machined high-temperature-resisting plate; arranging a gap supporting rod at the edge part of the wear-resisting plate or the high-temperature-resisting plate to form a gap between the two plates; uniformly paving explosive on the wear-resisting plate or the high-temperature-resisting plate; exploding a detonator; annealing in a range of 550-620 DEG C; rolling into a cylinder and symmetrically cutting along the axis; and carrying out surface treatment. According to the manufacturing method disclosed by the invention, exploding welding is adopted and the gap exists between the wear-resisting plate and the high-temperature-resisting plate of the chute; and potential energy formed by the gap exists in an exploding moment and the combination is firm, so that the wear-resisting plate and the high-temperature-resisting plate can be firmly welded together.

Description

technical field [0001] The manufacturing method of the blast furnace chute of the present invention specifically belongs to a manufacturing method of a composite blast furnace distribution chute. Background technique [0002] The material distribution chute is one of the key components in the blast furnace materialless bell top charging equipment, and its main function is to distribute the furnace materials to various positions in the furnace. The working position of the blast furnace distribution chute is at the top of the blast furnace cavity, and the charge of each batch of the blast furnace is continuously rushed to the blast furnace distribution from the material flow regulating valve through a drop of about 4m according to the corresponding frequency (according to different smelting requirements). The chute is thus distributed to various positions of the furnace. [0003] After research, it is found that the failure modes of the blast furnace distribution chute are ma...

Claims

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Application Information

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IPC IPC(8): B23P15/00B23K20/08
Inventor 蒋扬虎钟毅严开勇鲁新义韩斌李荣锋韩道旺张玉奎刘洋卢献忠
Owner 武汉钢铁有限公司