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Novel lead-free environmentally-friendly high-strength wearable copper-based alloy rod and preparation method thereof

An alloy rod and high-strength technology are applied in the field of lead-free, environmentally friendly, high-strength and wear-resistant copper-based new alloy rods and their preparation fields, which can solve the problems of failing to meet environmental protection requirements and easily causing hot brittleness.

Active Publication Date: 2013-04-24
SUZHOU JINCANG ALLOY NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, due to the lead-containing tin bronze alloy, it is not only easy to cause hot embrittlement during hot processing, so it can only be processed in a cold state; it cannot meet the high-standard environmental protection requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Lead-free, environmentally friendly, high-strength and wear-resistant copper-based new alloy rods are composed of the following components: manganese accounting for 0.05% of the total weight of the alloy rod, tin accounting for 4% of the total weight of the alloy rod, phosphorus accounting for 0.01% of the total weight of the alloy rod, accounting for The total weight of the alloy rod is 5% zinc, and the balance is copper.

[0027] The above-mentioned lead-free, environmentally friendly, high-strength, wear-resistant copper-based new alloy rod is prepared by the following method:

[0028] Step 1: Put copper, manganese, phosphorus, tin, and zinc in a power frequency electric furnace according to the ratio, heat to 1200-1250°C to completely melt, and then keep warm to 1150°C;

[0029] Step 2: After fully stirring the completely melted alloy liquid with a graphite rod, cover it with high-purity scaly graphite powder to prevent its oxidation, with a thickness of about 15-20...

Embodiment 2

[0037] Lead-free, environmentally friendly, high-strength and wear-resistant copper-based new alloy rods are composed of the following components: manganese accounting for 0.5% of the total weight of the alloy rod, tin accounting for 6% of the total weight of the alloy rod, phosphorus accounting for 0.5% of the total weight of the alloy rod, accounting for The total weight of the alloy rod is 7% zinc, and the balance is copper.

[0038] The finished lead-free, environmentally friendly, high-strength and wear-resistant copper-based new alloy rod was obtained by the same method as in Example 1.

Embodiment 3

[0040] Lead-free, environmentally friendly, high-strength and wear-resistant copper-based new alloy rods are composed of the following components: manganese accounting for 0.25% of the total weight of the alloy rod, tin accounting for 5% of the total weight of the alloy rod, phosphorus accounting for 0.25% of the total weight of the alloy rod, accounting for The total weight of the alloy rod is 6% zinc, and the balance is copper.

[0041] The finished lead-free, environmentally friendly, high-strength and wear-resistant copper-based new alloy rod was obtained by the same method as in Example 1.

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Abstract

The invention relates to a novel lead-free environment-friendly high-strength wearable copper-based alloy rod. The alloy rod comprises the following components in percentage by weight based on the total weight of the alloy rod: 0.05-7% of manganese, 2-11.5% of tin, 0.01-3% of phosphor, 1.5-10% of zinc and the balance of copper. By virtue of the alloy rod provided by the invention, the performances of the traditional lead-containing tin-bronze alloy rod are kept, and the manganese element is adopted to replace the lead element so as to meet environmental-friendly requirement.

Description

technical field [0001] The invention relates to the field of alloy rods, in particular to a lead-free, environmentally friendly, high-strength, wear-resistant copper-based novel alloy rod and a preparation method thereof. Background technique [0002] Traditionally leaded tin-bronze alloys have high anti-friction properties, good machinability, ease of welding and brazing, and good wear resistance in the atmosphere and fresh water; they are mainly used in the manufacture of aerospace, automotive, and other industrial sectors Parts that are subject to friction and must be welded, such as cylinder piston pin bushings, inner linings of bearings and bushings, connecting rod bushings, discs and washers, etc. [0003] However, the tin bronze alloy containing lead is not only easy to cause hot embrittlement during hot working due to lead, so it can only be processed in a cold state; moreover, it cannot meet the high standard of environmental protection requirements. Contents of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/02C22C9/04C22C9/05C22F1/08
Inventor 孙飞
Owner SUZHOU JINCANG ALLOY NEW MATERIAL
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