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Continuous casting alloy material for bearing bush and preparation method thereof

A technology of casting alloys and bearing bushes, which is applied in the direction of bearing components, shafts and bearings, mechanical equipment, etc., to achieve the effect of improving environmental performance requirements

Inactive Publication Date: 2017-12-12
SUZHOU RICHMOND ADVANCED MATERIAL TECH TRANSFER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing tin bronze materials often add lead elements in order to achieve their chip-easy performance. With the obvious improvement of environmental protection awareness, bronze alloys containing lead elements can no longer meet the requirements of high-end markets at home and abroad.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The percentage by weight of each component of the continuous casting alloy material used for the bearing bush in Example 1 of the present invention is: zinc 2wt%, tin 5wt%, bismuth 0.7wt%, silicon carbide 0.3wt%, aluminum oxide 0.2wt%, copper surplus quantity.

[0027] The preparation method of the continuous casting alloy material for the bearing bush according to the embodiment 1 of the present invention comprises the following steps:

[0028] Step 1: Place electrolytic copper, tin, and zinc in a power frequency electric furnace according to the weight percentage under normal conditions, heat to 1180°C and completely melt, then keep warm to 1000°C;

[0029] Step 2: After fully stirring the alloy liquid obtained in Step 1 with a graphite tool, cover it with high-purity scaly graphite powder with a thickness of 8 cm to prevent it from oxidation, and keep it warm for 1.3 hours;

[0030] Step 3: Take samples from the power frequency electric furnace, use the SPECTRO dire...

Embodiment 2

[0038] The percentage by weight of each component of the continuous casting alloy material used for the bearing bush in Example 1 of the present invention is: zinc 1.5wt%, tin 7.5wt%, bismuth 0.3wt%, silicon carbide 0.5wt%, aluminum oxide 0.3wt%, copper balance.

[0039] The preparation method of the continuous casting alloy material for the bearing bush according to the embodiment 1 of the present invention comprises the following steps:

[0040] Step 1: Place electrolytic copper, tin, and zinc in a power frequency electric furnace according to the weight percentage under normal conditions, heat to 1180°C and completely melt, then keep warm to 1000°C;

[0041] Step 2: After fully stirring the alloy liquid obtained in Step 1 with a graphite tool, cover it with high-purity scaly graphite powder with a thickness of 6 cm to prevent its oxidation, and keep it warm for 1.2 hours;

[0042] Step 3: Take samples from the power frequency electric furnace, and use the SPECTRO direct re...

Embodiment 3

[0050] The percentage by weight of each component of the continuous casting alloy material used for the bearing bush in Example 1 of the present invention is: 3.5wt% zinc, 3.5wt% tin, 0.5wt% bismuth, 0.15wt% silicon carbide, 0.4wt% aluminum oxide, copper balance.

[0051] The preparation method of the continuous casting alloy material for the bearing bush according to the embodiment 1 of the present invention comprises the following steps:

[0052] Step 1: Place electrolytic copper, tin, and zinc in a power frequency electric furnace according to the weight percentage under normal conditions, heat to 1180°C and completely melt, then keep warm to 1000°C;

[0053] Step 2: After fully stirring the alloy liquid obtained in Step 1 with a graphite tool, cover it with high-purity scaly graphite powder with a thickness of 10 cm to prevent its oxidation, and keep it warm for 1.5 hours;

[0054] Step 3: Take samples from the power frequency electric furnace, use the SPECTRO direct-read...

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Abstract

The invention relates to a continuous casting alloy material for a bearing bush and a preparation method thereof. The continuous casting alloy material for the bearing bush is prepared from, by weight, 1.5%-3.5% of zinc, 3.5%-7.5% of tin, 0.3%-1.0% of bismuth, 0.15%-0.5% of silicon carbide, 0.1%-0.5% of aluminum oxide, and the balance copper. The preparation method of the continuous casting alloy material for the bearing bush comprises the steps of in-batch smelting, stirring, inspecting and the like. The continuous casting alloy material for the bearing bush does not contain lead, the cutting performance and the hardness of the alloy are further improved while the requirement on the environmental friendliness of the alloy is met on the condition that the cost is not increased, and therefore the continuous casting alloy material is more suitable for wear-resistant parts used at high temperature (400 DEG C).

Description

technical field [0001] The invention relates to an alloy material and a preparation method thereof, in particular to a continuous casting alloy material for bearing bushes and a preparation method thereof. Background technique [0002] Copper alloy is an alloy composed of copper as the base and other elements. Existing tin bronze materials often add lead elements in order to achieve their chip-easy performance. With the obvious improvement of environmental protection awareness, bronze alloys containing lead elements can no longer meet the requirements of high-end markets at home and abroad. [0003] Therefore, there is currently a need for an alloy material that does not need to add lead and has good machinability and a preparation method thereof. Contents of the invention [0004] The object of the present invention is to provide a continuous casting alloy material for bearing bushes with good cutting performance and no lead element by improving the composition of the al...

Claims

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Application Information

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IPC IPC(8): C22C9/02F16C33/12
CPCC22C9/02F16C33/121
Inventor 孙飞赵勇埃塞尔·赛佐罗叶斯夫·丹尼斯
Owner SUZHOU RICHMOND ADVANCED MATERIAL TECH TRANSFER CO LTD
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