Impact abrasion resistant flux-cored wire used for hammer head of hammer crusher

A technology of hammer crusher and flux-cored wire, which is applied in the direction of welding medium, welding equipment, welding/cutting medium/material, etc., can solve the problems of low service life, falling off along the joint surface, low wear resistance, etc., and achieve improvement Hardness and yield strength, improvement of wear resistance, effect of high wear resistance

Inactive Publication Date: 2009-12-16
中材(天津)重型机械有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the material used in industrial production for the hammer head of hammer crusher is high manganese steel ZGMn13, but under the conditions of medium and low impact wear, its impact phase transformation hardening ability cannot be fully exerted, which is characterized by low wear resistance. lower service life
In addition, the double-metal composite hammer head has been researched and reported. The hammer handle is made of medium and low carbon steel, and the wear part of the hammer head is made of high-chromium cast iron, which can give full play to the good toughness of carbon steel and safe use. The high-chromium cast iron has high hardness and wear resistance. Good performance, but the main problem of this kind of hammer head is that it is easy to fall off along the joint surface during use, endangering the safety of the equipment, so the application and promotion are restricted

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] The drug core components are high-carbon ferrochrome, potassium titanate, titanium carbide, fluorite, ferromolybdenum, medium-carbon ferromanganese, ferrosilicon and aluminum powder by weight percentage of 25%, 2%, 40%, 2%, 14% %, 9%, 6% and 2% are uniformly mixed in a powder mixer, and the drug core is wrapped with a low-carbon steel strip sheath, the weight ratio of the drug core and the sheath is 30:70, and then drawn by a wire drawing machine to obtain Anti-impact and wear-resistant flux-cored wire for the hammerhead of a hammer crusher.

[0011] Abrasive wear test: with the as-welded high manganese steel with hardness of HRC40 as the standard sample, the relative wear resistance of the flux-cored welding wire surfacing layer prepared in Example 1 is 5 times higher than that of the standard sample, and it is suitable for working with low impact loads. conditions.

Embodiment 2

[0013] The drug core components are high-carbon ferrochrome, potassium titanate, titanium carbide, fluorite, ferromolybdenum, medium-carbon ferromanganese, ferrosilicon and aluminum powder by weight percentage of 35%, 3%, 30%, 2%, 13% %, 8%, 7% and 2% are uniformly mixed in a powder mixer, and the drug core is wrapped with a low-carbon steel strip sheath, the weight ratio of the drug core and the sheath is 30:70, and then drawn by a wire drawing machine to obtain Anti-impact and wear-resistant flux-cored wire for the hammerhead of a hammer crusher.

[0014] Abrasive wear test: with the as-welded high manganese steel with a hardness of HRC40 as the standard sample, the relative wear resistance of the flux-cored welding wire surfacing layer prepared in Example 2 is 4 times higher than that of the standard sample, and it is suitable for low impact loads. conditions.

Embodiment 3

[0016] The drug core components are high-carbon ferrochromium, potassium titanate, titanium carbide, fluorite, ferromolybdenum, medium-carbon ferromanganese, ferrosilicon and aluminum powder by weight percentage of 40%, 2%, 25%, 2%, 12% %, 8%, 8% and 3% are uniformly mixed in a powder mixer, and the drug core is wrapped with a low-carbon steel strip sheath, the weight ratio of the drug core and the sheath is 25:75, and then drawn by a wire drawing machine to obtain Anti-impact and wear-resistant flux-cored wire for the hammerhead of a hammer crusher.

[0017] Abrasive wear test: with the as-welded high manganese steel with a hardness of HRC40 as the standard sample, the relative wear resistance of the flux-cored welding wire surfacing layer prepared in Example 3 is 3 times higher than that of the standard sample, and it is suitable for low impact loads. conditions.

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Abstract

The invention discloses an impact abrasion resistant flux-cored wire used for a hammer head of a hammer crusher, belongs to the field of abrasion-resistant overlaying materials, and solves the problem that the hammer head of the hammer crusher has poor abrasion resistance under the condition of impact abrasion. The flux-cored wire provided by the invention adopts a flux core wrapped by a low-carbon steel sheath; the weight ratio of the flux core to the low-carbon steel sheath is 25:75-30:70; and the flux core comprises the following components in percentage by weight: 25 to 40 percent of high-carbon chromium iron, 2 to 3 percent of potassium titanate, 20 to 40 percent of titanium carbide, 2 to 3 percent of fluorite, 10 to 14 percent of molybdenum iron, 6 to 9 percent of medium-carbon ferromanganese, 6 to 9 percent of ferrosilicon, and 2 to 3 percent of aluminum powder. The flux-cored wire of the invention has the advantages of good overlaying layer harness after welding, no crack, good impact abrasion performance, and the like.

Description

technical field [0001] The invention belongs to the field of wear-resistant surfacing materials, and in particular relates to an anti-shock and wear-resistant surfacing flux-cored welding wire for the hammer head of a hammer crusher, in particular to an anti-impact and wear-resistant surfacing welding wire containing titanium carbide hard phase welding wire. Background technique [0002] At present, the material used in industrial production for the hammer head of hammer crusher is high manganese steel ZGMn13, but under the conditions of medium and low impact wear, its impact phase transformation hardening ability cannot be fully exerted, which is characterized by low wear resistance. The service life is lower. In addition, the double-metal composite hammer head has been researched and reported. The hammer handle is made of medium and low carbon steel, and the wear part of the hammer head is made of high-chromium cast iron, which can give full play to the good toughness of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/22
Inventor 王智慧边汉民陈勇贺定勇张胜泉崔丽蒋建敏王斌王文荟
Owner 中材(天津)重型机械有限公司
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