Wear-resistant hammer head for crusher and production method thereof

A crusher and hammer technology, applied in furnace types, furnaces, heat treatment furnaces, etc., can solve the problems of insufficient work hardening performance, reducing surface hardness, strength, and short service life of castings, and achieve high hardness and low price. , the effect of improving wear resistance

Inactive Publication Date: 2012-08-15
TAIYUAN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, under non-strong impact conditions, the work hardening performance of high manganese steel is not fully reflected, the surface hardness is often lower than HB300-350, and the hardened layer is also very shallow, which greatly reduces the surface hardness and strength of its castings, resulting in its durability. Poor abrasiveness and short service life

Method used

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  • Wear-resistant hammer head for crusher and production method thereof
  • Wear-resistant hammer head for crusher and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] In the wear-resistant hammer head for crushers in this embodiment, the wear-resistant hammer head includes the following raw materials in mass percentages, C: 0.9-1.2%, Mn: 11.0-14.0%, Si: 0.3-0.7%, Cr : 0.1~0.5%, Mo≤0.3%, V≤0.1%, Ti≤0.1%, P and S≤0.04%, Re: 0.1~0.4%, Tieshen No. 1: 0.3~0.6%, and the rest is Fe.

[0013] The method for producing the above-mentioned wear-resistant hammer head for the crusher includes the following steps: manufacturing lost foam—making sand mold—smelting alloy—modifying treatment—casting—cleaning—heat treatment; the manufacturing of lost foam is made of foam Polystyrene (EPS) is used as a raw material to make a model according to the shape of the part, and the multilayer coating (magnesia powder) is applied to the surface of the model, and dried to make a lost foam; Sand molds are made under negative pressure; the above-mentioned raw materials are smelted in an intermediate frequency or power frequency induction furnace, and the furnace t...

Embodiment 2

[0015] In the wear-resistant hammer head for crushers in this embodiment, the wear-resistant hammer head includes the following raw materials in mass percentages, C: 0.9-1.2%, Mn: 11.0-14.0%, Si: 0.3-0.7%, Cr : 0.1~0.5%, Mo≤0.3%, V≤0.1%, Ti≤0.1%, P and S≤0.04%, Re: 0.1~0.4%, Tieshen No. 1: 0.3~0.6%, and the rest is Fe.

[0016] The method for producing the above-mentioned wear-resistant hammer head for the crusher includes the following steps: manufacturing lost foam—making sand mold—smelting alloy—modifying treatment—casting—cleaning—heat treatment; the manufacturing of lost foam is made of foam Polystyrene (EPS) is used as a raw material to make a model according to the shape of the part, and the multilayer coating (magnesia powder) is applied to the surface of the model, and dried to make a lost foam; Sand molds are made under negative pressure; the above-mentioned raw materials are smelted in an intermediate frequency or power frequency induction furnace, and the furnace t...

Embodiment 3

[0018] In the wear-resistant hammer head for crushers in this embodiment, the wear-resistant hammer head includes the following raw materials in mass percentages, C: 0.9-1.2%, Mn: 11.0-14.0%, Si: 0.3-0.7%, Cr : 0.1~0.5%, Mo≤0.3%, V≤0.1%, Ti≤0.1%, P and S≤0.04%, Re: 0.1~0.4%, Tieshen No. 1: 0.3~0.6%, and the rest is Fe. The method for producing the above-mentioned wear-resistant hammer head for the crusher includes the following steps: manufacturing lost foam—making sand mold—smelting alloy—modifying treatment—casting—cleaning—heat treatment; the manufacturing of lost foam is made of foam Polystyrene (EPS) is used as a raw material to make a model according to the shape of the part, and the multilayer coating (magnesia powder) is applied to the surface of the model, and dried to make a lost foam; Sand molds are made under negative pressure; the above-mentioned raw materials are smelted in an intermediate frequency or power frequency induction furnace, and the furnace temperatur...

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Abstract

The invention relates to a wear-resistant hammer head for a crusher, and a production method of the wear-resistant hammer head, and belongs to a wear-resistant hammer head for a crusher, and a production method of the wear-resistant hammer head. The invention aims at mainly solving the technical problems of that the wear resistance is poor and the service life is short in the prior art. According to the technical scheme, the wear-resistant hammer head for the crusher comprises the following raw materials by weight percent: 0.9-1.2% of C, 11.0-14.0% of Mn, 0.3-0.7% Si, 0.1-0.5% Cr, less than or equal to 0.3% of Mo, less than 0.1% of V, less than or equal to 0.1% of Ti, less than or equal to 0.04% of P and S, 0.1-0.4% of Re, 0.3-0.6% of No.1 Tieshen, and the balance of Fe. The production method comprises the steps of: manufacturing an evanescent mode-manufacturing a sand mould-smelting alloy-conducting modification-pouring-cleaning-conducting thermal treatment. According to the wear-resistant hammer head and the production method, the rigidity is high, the toughness is enough, the wear resistance is improved greatly, the service life is prolonged by one time compared with the original service life, and the wear-resistant hammer head is especially applicable to non-strong-impaction working conditions.

Description

technical field [0001] The invention relates to a wear-resistant hammer for a crusher and a production method thereof, which belongs to a wear-resistant and impact-resistant hammer for a crusher and a production method thereof. Background technique [0002] In various industrial sectors such as metallurgy, mining, coal, electric power and agricultural machinery, many equipment and workpieces fail rapidly due to wear, and material wear causes a large amount of economic losses. The ring hammer is a key part of the crusher, and it is also a vulnerable part. Its service life and replacement times directly affect the efficiency of the equipment. [0003] At present, high-manganese steel (M13) is mostly used as the hammer head material of the crusher, and its chemical composition mass percentage is: C: 0.90-1.20, Mn: 11.00-14.00, Si: 0.30-0.80, P≤0.070, S≤0.040. High manganese steel is austenitic steel, cast and treated with water to obtain austenite structure at room temperature...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/38B22C9/04C21D9/00
Inventor 曹建新李永堂安文柱
Owner TAIYUAN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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