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Antimony-tin-zinc-bronze alloy bar for high speed railway equipment and preparing method of antimony-tin-zinc-bronze alloy bar

A high-speed railway, bronze alloy technology, applied in the field of alloy materials, can solve the problems of human body and environmental impact, can not meet the requirements, lead-containing elements are toxic, etc., and achieve the effects of improving environmental protection performance, preventing oxidation, and improving wear resistance.

Inactive Publication Date: 2017-01-04
SUZHOU JINCANG ALLOY NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, lead-containing elements are toxic and have an impact on the human body and the environment. With the continuous improvement of people's awareness of environmental protection, bronze alloy rods containing lead elements can no longer meet the requirements of high-end markets at home and abroad, especially the rapid development of high-speed railways in my country. equipment requirements

Method used

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  • Antimony-tin-zinc-bronze alloy bar for high speed railway equipment and preparing method of antimony-tin-zinc-bronze alloy bar

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A preparation method for an antimony-tin-zinc bronze alloy rod for high-speed railway equipment, comprising the steps of:

[0030] 1) According to the mass percentage of 2.5% antimony, 6% tin, 3% zinc, and 82.5% electrolytic copper, configure the raw materials, place them in a power frequency electric furnace, heat them to 1250-1300 degrees, and keep them warm to 1250 degrees after they are completely melted. Spend;

[0031] 2) The above-mentioned completely melted alloy liquid is fully stirred with a special graphite tool, and then the well-stirred alloy liquid is covered with high-purity scaly graphite powder to prevent its oxidation. The thickness of the graphite powder is about 10- 15mm;

[0032] 3) After 25-30 minutes of heat preservation, reheat to 1300 degrees, and turn on the vibration device of the power frequency electric furnace, the vibration frequency is 1 time / second, and the outer diameter is 45 mm and the length is 2000 mm. solid alloy bars;

[0033] ...

Embodiment 2

[0041] Embodiment 2 is different from Embodiment 1 only in the ratio of raw materials, and is the same in other respects. Therefore, only the differences will be described below.

[0042] This embodiment 2 is different from embodiment 1 only in that: in step 1) according to the mass percentage of antimony 3.0%, tin 7%, zinc 4.5%, electrolytic copper 84.5%, configure raw material, and it is placed in power frequency electric furnace Inside.

[0043] The alloy hardness of the antimony-added tin-zinc bronze alloy rod in this embodiment can be greatly increased to 119-125HBS (Brinell hardness), and as the antimony content increases, its friction decreases to 0.1-0.12, indicating its wear resistance There is also a corresponding increase.

Embodiment 3

[0045] Embodiment 3 is different from embodiment 2 only in the ratio of raw materials, and is the same in other respects. Therefore, only the differences will be described below.

[0046] The present embodiment 3 is different from embodiment 2 only in that: in step 1) according to the mass percentage of antimony 4.5%, tin 6.1%, zinc 5.4%, electrolytic copper 83%, configure raw material, and it is placed in power frequency electric furnace Inside.

[0047] The alloy hardness of the antimony-added tin-zinc bronze alloy rod in this embodiment can be greatly increased to 121-130HBS (Brinell hardness), and as the antimony content increases, its friction decreases to 0.1-0.12, indicating its wear resistance There is also a corresponding increase.

[0048] Table 1

[0049]

[0050] Based on above-mentioned embodiment, as shown in table 1, the alloy hardness of traditional leaded high-tin bronze alloy rod is 70~80HBS (Brinell hardness), friction coefficient μ is 0.15~0.20, the p...

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Abstract

The invention discloses an antimony-tin-zinc-bronze alloy bar for high speed railway equipment. The antimony-tin-zinc-bronze alloy bar comprises, by mass percent, 2.5%-4.5% of antimony, 6%-7.5% of tin, 3%-5.5% of zinc and 82.5%-88.5% of copper. According to an antimony-tin-zinc-bronze alloy for the high speed railway equipment and the alloy bar made of the alloy, a traditional lead element is replaced with an antimony element, the environment-friendly performance of the alloy and the alloy bar is improved, meanwhile, the alloy hardness of the alloy and the alloy bar can be greatly improved, and the abrasion resistance of the alloy and the alloy bar can be obviously improved. In addition, the situation that sufficiently-stirred alloy liquid makes contact with air and is oxidized can be effectively prevented through coverage of graphite powder.

Description

technical field [0001] The invention relates to the field of alloy materials, in particular to an antimony-tin-zinc bronze alloy rod used for high-speed railway equipment and a preparation method thereof. Background technique [0002] Tin bronze is the non-ferrous metal alloy with the smallest casting shrinkage rate. It is used to produce castings with complex shapes, clear outlines and low air tightness requirements. Tin bronze is very resistant to corrosion in the atmosphere, sea water, fresh water and steam, and is widely used in various Wear-resistant bearing bushes, bushings, flanges and gears, etc., especially for high-speed railway equipment. [0003] At present, in order to improve the easy-cutting performance of tin-bronze alloy rods, lead elements are often added to the rods. The high-tin bronze alloy rods after adding lead have high wear resistance and are easy to cut and are widely used. However, lead-containing elements are toxic and have an impact on the human...

Claims

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Application Information

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IPC IPC(8): C22C9/02C22C1/02
CPCC22C1/02C22C9/02
Inventor 孙飞赵勇埃里克斯·高登
Owner SUZHOU JINCANG ALLOY NEW MATERIAL
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