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Evanescent mode casting hammerhead

A technology of lost foam casting and hammer head, which is applied in the field of lost foam casting hammer head, which can solve the problems that it is difficult to guarantee the wear resistance and strength requirements of the hammer head, and achieve the effects of superior wear resistance, long service life and improved hardness

Inactive Publication Date: 2015-09-30
LIUZHOU JINTE NEW WEAR RESISTANT MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is difficult to ensure the wear resistance and strength requirements of the hammer head by using the hammer head of lost foam casting.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] A lost foam casting hammer, comprising the following chemical composition, by weight percentage:

[0013] C 3.8%, Si 1.1%, Mn 1.2%, Cr 12.0%, Mo 0.35%, Cu 0.12%, V 0.12%, Nb 0.018%, Ti 0.04%, W 0.04%, B 0.04%, Ce 0.06%, the rest are Fe.

Embodiment 2

[0015] A lost foam casting hammer, comprising the following chemical composition, by weight percentage:

[0016] C 3.2%, Si 1.4%, Mn 1.0%, Cr 12.8%, Mo 0.31%, Cu 0.14%, V 0.07%, Nb 0.020%, Ti 0.03%, W 0.05%, B 0.02%, Ce 0.08%, and the rest Fe.

Embodiment 3

[0018] A lost foam casting hammer, comprising the following chemical composition, by weight percentage:

[0019] C 4%, Si 0.9%, Mn 1.5%, Cr 11.4%, Mo 0.36%, Cu 0.08%, V 0.16%, Nb 0.010%, Ti 0.045%, W 0.02%, B 0.05%, Ce 0.05%, and the rest Fe.

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Abstract

The invention discloses an evanescent mode casting hammerhead which comprises the following chemical components by weight percent: 3.2%-4% of C, 0.9%-1.4% of Si, 1.0%-1.5% Mn, 11.4%-12.8% Cr, 0.31%-0.36% of Mo, 0.08%-0.14% of Cu, 0.07%-0.16% of V, 0.010%-0.020% of Nb, 0.03%-0.045% of Ti, 0.02%-0.05% of W, 0.02%-0.05% of B, 0.05%-0.08% of Ce, and the balance being Fe. According to the evanescent mode casting hammerhead of a high-strength crusher, on the basis of a high-chromium alloy, a manganese element is additionally added, so that the hardness is improved effectively, the wear-resisting property is more superior than those of a hard alloy hammerhead and a high-chromium alloy hammerhead at present, and the service life is longer.

Description

technical field [0001] The invention relates to a lost foam casting hammer head. Background technique [0002] Lost foam casting is a new technology with almost no margin and precise molding. This process does not require mold taking, no parting surface, and no sand core. Dimensional errors caused by combination. The surface roughness of the casting can reach Ra3.2 to 12.5μm; the dimensional accuracy of the casting can reach CT7 to 9; the machining allowance is at most 1.5 to 2mm, which can greatly reduce the cost of machining, compared with the traditional sand casting method, it can reduce 40 % to 50% of the machining volume. However, it is difficult to guarantee the required wear resistance and strength requirements of the hammer head by using the lost foam casting hammer head. Contents of the invention [0003] The technical problem to be solved by the invention is to overcome the existing defects and provide a lost foam casting hammer head made of high chromium and...

Claims

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Application Information

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IPC IPC(8): C22C38/36
Inventor 何拥军蒋漓洪伍斌华杨学赖卫华黄立德梁英豪
Owner LIUZHOU JINTE NEW WEAR RESISTANT MATERIAL CO LTD
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