Combined position board hammer of reaction crusher capable of rapidly changing wear position and manufacturing method thereof

A technology of impact crusher and combined plate, which is applied in the fields of casting and molding equipment, grain processing, etc., can solve the problems that it is difficult to meet the material requirements of impact crusher blow bar, a lot of time and manpower, complex dynamic balance inspection, etc., to achieve The mating connection is firm and reliable, the cost is reduced, and the effect of overcoming the axial force

Inactive Publication Date: 2010-10-06
HUAIYIN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen that it is difficult for a single material to meet the material requirements of the impact crusher blow bar.
[0003] In addition, in actual production, the speed and difficulty of changing the side and replacement of the blow bar are the most important factors affecting the production efficiency of the crusher.
Not only does it take a lot of time and manpower to disassemble the old blow bar and assemble a new one, but also requires complex dynamic balance checks. Usually, it takes at least one shift to replace a set of blow bars, which undoubtedly reduces the crushing output and improves the productivity. Broken cost
Besides, the wear of the blow bar of the impact crusher only appears on the side facing the material, while the back and side are not worn. In addition to being able to change sides and use once, the blow bar needs to be replaced when there is not much wear, resulting in The utilization rate of metal is not high

Method used

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  • Combined position board hammer of reaction crusher capable of rapidly changing wear position and manufacturing method thereof
  • Combined position board hammer of reaction crusher capable of rapidly changing wear position and manufacturing method thereof
  • Combined position board hammer of reaction crusher capable of rapidly changing wear position and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Example 1: To produce a T-shaped blow bar with a unit weight of 600N. The combined wear-resistant strip and the blow bar body of the blow bar are all cast from high-chromium cast iron, and the mass fraction of the chemical composition of the high-chromium cast iron is: C 2.92% , Si 0.52%, S 0.03%, P0.04%, Mn 0.77%, Cu 0.48%, Cr 25.24%, Ni 0.49%, V 0.12%, RE 0.11%, Fe 69.28%; The worn parts are inlaid with YG20 cemented carbide rods. The alloy rods are purchased parts with a diameter of 5mm. The mass fraction of its chemical composition is: WC 80%, binder 20%, and its performance is: density / t.m -3 13.4~13.8, bending strength / Mpa2400~2480, hardness (HRA)80~83.5.

[0023] The manufacturing method of the blow bar of the present invention, the manufacturing method comprises the production process of the blow bar body and the combined wear-resistant strip high-chromium cast iron, the lost foam casting process, the heat treatment process and the blow bar assembly process; whe...

Embodiment 2

[0024] Example 2: To produce a T-shaped blow bar with a unit weight of 500N. The combined wear-resistant strip and the blow bar body of the blow bar are cast from high-chromium cast iron. The mass fraction of the chemical composition of the high-chromium cast iron is: C 3.16% , Si 0.71%, S 0.03%, P0.05%, Mn 0.87%, Cu 0.57%, Cr 25.95%, Ni 0.55%, V 0.17%, RE 0.13%, Fe 67.81%; The worn parts are inlaid with YG20 cemented carbide rods. The alloy rods are purchased parts with a diameter of 4mm. The mass fraction of its chemical composition is: WC 80%, binder 20%, and its performance is: density / t.m -3 13.4~13.8, bending strength / Mpa2400~2480, hardness (HRA)80~83.5.

[0025] The manufacturing method of the blow bar of the present invention, the manufacturing method comprises the production process of the blow bar body and the combined wear-resistant strip high-chromium cast iron, the lost foam casting process, the heat treatment process and the blow bar assembly process; wherein, th...

Embodiment 3

[0026] Example 3: To produce a T-shaped blow bar with a unit weight of 400N. The combined wear-resistant strip and the blow bar body of the blow bar are cast from high-chromium cast iron, and the mass fraction of the chemical composition of the high-chromium cast iron is: C 3.32% , Si 0.84%, S 0.05%, P0.06%, Mn 0.99%, Cu 0.64%, Cr 26.87%, Ni 0.68%, V 0.24%, RE 0.14%, Fe 66.17%; The worn parts are inlaid with YG20 cemented carbide rods. The alloy rods are purchased parts with a diameter of 3mm. The mass fraction of its chemical composition is: WC 80%, binder 20%, and its performance is: density / t.m -3 13.4~13.8, bending strength / Mpa2400~2480, hardness (HRA)80~83.5.

[0027] The manufacturing method of the blow bar of the present invention, the manufacturing method comprises the production process of the blow bar body and the combined wear-resistant strip high-chromium cast iron, the lost foam casting process, the heat treatment process and the blow bar assembly process; wherei...

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Abstract

The invention discloses a composition board hammer of a reaction crusher capable of rapidly changing wear positions and a manufacturing method thereof. The board hammer consists of a combined wearing strip (2) and a board hammer body (5), wherein the board hammer body (5) and the combined wearing strip (2) are produced by using high chromium cast iron through lost foam casting; the central position at the lower end of the combined wearing strip (2) is provided with a tenon (8); the center of the board hammer body (5) is provided with mounting holes (10); the position for installing the combined wearing strip (2) on the board hammer (5) is provided with a mortise (9) matching with the tenon (8) of the combined wearing strip (2); the board hammer body (5) and the combined wearing strip (2) are connected through the mortise (9) and the tenon(8) to form the whole board hammer; and the assembled wearing strip is positioned at the wearing position on the board hammer. The invention has the advantages that the combined wearing strip of the combined board hammer can be rapidly changed after being wore and the board hammer body is not changed or less changed, thereby improving production efficiency, saving metal materials and being suitable for manufacturing a T-shaped board hammer of the reaction crusher.

Description

technical field [0001] The invention relates to a blow bar of an impact crusher, in particular to a combined blow bar of an impact crusher for rapidly replacing worn parts and a manufacturing method thereof. Background technique [0002] The impact crusher has the advantages of simple structure, large crushing ratio, low energy consumption, high output, and the finished product is cubic after crushing. It is widely used in metallurgy, mining, building materials, roads and electric power industries for coarse crushing, medium crushing or fine crushing. Ore, limestone, coal or other brittle materials with medium hardness. However, because the impact crusher blow bar is easy to wear, especially for crushing hard ore, the wear is more serious and needs to be replaced frequently. One way to solve the above problems is to seek better materials for making blow bars; the other is to design a quick and easy-to-replace blow bar structure. At present, the materials used to make blow ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B02C13/28C22C29/08C22C37/10B22C7/02
Inventor 卓荣明
Owner HUAIYIN INSTITUTE OF TECHNOLOGY
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