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Large-size crusher hammerhead

A crusher and hammer head technology, applied in the field of wear-resistant materials, can solve the problems of low cost and unsuitable for large crushers, etc., and achieve the effects of simple production, reduction of the frequency of replacement of hammer heads, and reasonable formula.

Active Publication Date: 2014-11-19
ANHUI SANFANG NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention is suitable for medium-sized crushers for crushing ore with moderate hardness, and the cost is low, but it is not suitable for large-scale crushers

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A large crusher hammer, including the following chemical composition in weight percentage: C2.75%, Cr19%, Si0.75%, Mn1.25%, Ni0.65%, V0.25%, Nb0.05%, W0 .18%, S0.015%, P0.02%, Zr0.18%, the balance is iron;

[0020] The manufacturing method of the hammerhead of the large crusher comprises the following steps:

[0021] (1) adopt scrap steel material as raw material to carry out batching according to the proportioning of described large crusher hammer head;

[0022] (2) Put the prepared raw materials into an intermediate frequency electric furnace for melting, and the melting temperature is 1450°C;

[0023] (3) check and analyze the molten steel obtained by smelting, and carry out secondary proportioning of elements to molten steel according to the test results;

[0024] (4) Place the modificator on the bottom of the ladle with iron sheets or tin foil paper, and carry out metamorphic treatment on the molten steel. The metamorphic temperature is 1450°C, and the molten ste...

Embodiment 2

[0028] A large crusher hammer, including the following chemical composition in weight percentage: C2.5%, Cr21%, Si0.6%, Mn1.55%, Ni0.65%, V0.05%, Nb0.05%, W0 .3%, S0.005%, P0.005%, Zr0.15%, the balance is iron;

[0029] The manufacturing method of the hammerhead of the large crusher comprises the following steps:

[0030] (1) adopt scrap steel material as raw material to carry out batching according to the proportioning of described large crusher hammer head;

[0031] (2) Put the prepared raw materials into an intermediate frequency electric furnace for melting, and the melting temperature is 1440°C;

[0032] (3) check and analyze the molten steel obtained by smelting, and carry out secondary proportioning of elements to molten steel according to the test results;

[0033] (4) Place the modificator on the bottom of the ladle with iron sheets or tin foil paper, and carry out metamorphic treatment on the molten steel. The metamorphic temperature is 1420°C, and the molten steel...

Embodiment 3

[0037] A low-chromium large-scale crusher hammer head is characterized in that it includes the following chemical components in weight percentage: C3.2%, Cr18%, Si0.9%, Mn2.0%, Ni0.3%, V0.3%, Nb0.2%, W0.5%, S0.025%, P0.025%, Zr0.2%, the balance is iron;

[0038] The manufacturing method of the hammerhead of the large crusher comprises the following steps:

[0039] (1) adopt scrap steel material as raw material to carry out batching according to the proportioning of described large crusher hammer head;

[0040] (2) Put the prepared raw materials into an intermediate frequency electric furnace for melting, and the melting temperature is 1450°C;

[0041] (3) check and analyze the molten steel obtained by smelting, and carry out secondary proportioning of elements to molten steel according to the test results;

[0042] (4) Place the modificator on the bottom of the ladle with iron sheets or tin foil paper, and carry out metamorphic treatment on the molten steel. The metamorphic ...

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Abstract

The invention relates to the technical field of wear resistant materials, and discloses a large-size crusher hammerhead which comprises the following chemical components in percentage by weight: 2.2-3.2% of C, 18-22% of Cr, 0.3-0.9% of Si, 1.0-2.0% of Mn, 0.3-1.0% of Ni, no more than 0.3% of V, no more than 0.2% of Nb, 0.1-0.5% of W, no more than 0.025% of S, no more than 0.025% of P, 0.05-0.2% of Zr and the balance of iron. According to the invention, the raw materials are accessible, and the manufacturing method is simple; the large-size crusher hammerhead is reasonable in formula, simple to manufacture and long in service life, has very high strength, toughness, wear resistance and impact resistance, is applicable to large-size crushers, reduces the hammerhead replacement frequency in a factory and lowers the labor intensity.

Description

technical field [0001] The invention relates to the technical field of wear-resistant materials, in particular to a hammer head of a large crusher. Background technique [0002] With the rapid development of new dry-process cement large-scale equipment technology, domestic 5000t / d and 10000t / d large-scale dry-process cement production lines are increasing day by day. Limestone is the main raw material for cement production. In order to ensure sufficient supply, most cement production plants use large single-stage rotor hammer crushers for crushing. As a key wearable part of a large limestone crusher, the hammer head needs to withstand the strong impact of large materials during operation, and requires good impact toughness and high hardness. Due to the large differences in limestone quality, rotational speed, feed particle size, and comprehensive moisture of materials among cement manufacturers, the service life of hammers made of the same material varies greatly. It may we...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/58C22C38/56
Inventor 仰明
Owner ANHUI SANFANG NEW MATERIAL TECH CO LTD
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