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A large crusher hammer

A crusher and hammer technology, which is applied in the field of wear-resistant materials, can solve the problems of low cost and inapplicability of large crushers, and achieve the effects of simple production, reduced frequency of hammer replacement, and easy availability of raw materials

Active Publication Date: 2016-07-06
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

[0016] A method for manufacturing a hammer head of a large crusher includes the following steps:

[0017] (1) adopt scrap steel material as raw material to carry out batching according to the proportioning of described large crusher hammer head;

[0018] (2) Put the prepared raw materials into an intermediate frequency electric furnace for melting, and the melting temperature is 1450°C;

[0019] (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;

[0020] (4) Wrap the modificator with iron sheet or tin foil paper and place it on the bottom of the ladle, carry out metamorphic treatment to the molten steel, the metamorphic temperature is 1450°C, and carry out trickle casting of the molten steel with qualified elements at a temperature of 1420°C;

[0021] (5) When the surface temperature of the casting does not exceed 300°C, separate and finely grind the cooled hammer head p...

Embodiment 2

[0024] The manufacturing method of the hammerhead of the large crusher comprises the following steps:

[0025] (1) adopt scrap steel material as raw material to carry out batching according to the proportioning of described large crusher hammer head;

[0026] (2) Put the prepared raw materials into an intermediate frequency electric furnace for melting, and the melting temperature is 1440°C;

[0027] (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;

[0028] (4) Wrap the modificator with iron sheet or tin foil paper and place it on the bottom of the ladle, carry out metamorphic treatment on the molten steel, the metamorphic temperature is 1420°C, and carry out trickle casting of molten steel with qualified elements at a temperature of 1400°C;

[0029] (5) When the surface temperature of the casting does not exceed 300°C, separate and finely grind the cooled hammer head ...

Embodiment 3

[0032] A method for manufacturing a hammer head of a large crusher includes the following steps:

[0033] (1) adopt scrap steel material as raw material to carry out batching according to the proportioning of described large crusher hammer head;

[0034] (2) Put the prepared raw materials into an intermediate frequency electric furnace for melting, and the melting temperature is 1450°C;

[0035] (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;

[0036] (4) Wrap the modificator with iron sheet or tinfoil paper and place it on the bottom of the ladle, carry out metamorphic treatment on the molten steel, the metamorphic temperature is 1430°C, and carry out trickle casting of molten steel with qualified elements at a temperature of 1410°C;

[0037] (5) When the surface temperature of the casting does not exceed 300°C, separate and finely grind the cooled hammer head plate ...

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Abstract

The present invention relates to the technical field of wear-resistant materials, and discloses a hammer head of a large-scale crusher. The hammer head undergoes batching, smelting, inspection and analysis, metamorphic treatment, separation and fine grinding, heating, and cooling, and the resulting finished product includes the following weight percentages: Chemical composition: C 2.2—3.2%, Cr 18—22%, Si 0.3—0.9%, Mn 1.0—2.0%, Ni 0.3—1.0%, V≤0.3%, Nb≤0.2%, W 0.1—0.5%, S ≤0.025%, P≤0.025%, Zr 0.05-0.2%, and the balance is iron; the raw materials of the invention are easy to obtain, the production method is simple, the formula of the invention is reasonable, the production is simple, the service life is long, and it has high strength, toughness, Wear resistance and impact resistance, suitable for large crushers, reducing the frequency of hammer head replacement in the factory and reducing 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 Patents(China)
IPC IPC(8): C22C38/58C22C38/56
Inventor 仰明李和成
Owner ANHUI SANFANG NEW MATERIAL TECH CO LTD
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