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Lead-free environment-friendly copper base alloy bar and preparation method thereof

A technology of copper-based alloys and manufacturing methods, applied in the manufacture of alloy rods, the field of lead-free and environmentally friendly copper-based alloy rods, can solve the problems of reducing the machinability of alloy rods, lead hazards, etc., shorten the production cycle, improve production efficiency, The effect of reducing production costs

Active Publication Date: 2014-02-05
SUZHOU JINCANG ALLOY NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the characteristics of lead, hot brittleness is very easy to occur during hot working, so only cold working can be carried out, which reduces the workability of alloy rods, and lead is very harmful to the environment. 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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  • Lead-free environment-friendly copper base alloy bar and preparation method thereof
  • Lead-free environment-friendly copper base alloy bar and preparation method thereof
  • Lead-free environment-friendly copper base alloy bar and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Example 1, a lead-free environmentally friendly copper-based alloy rod, composed of the following components in weight percentage: zinc: 2%, tin: 0.5%, silicon: 4.5%, phosphorus: 0.25%, manganese: 0.01%, the balance for copper. Its manufacturing process is as figure 1 As shown, perform the following steps in sequence:

[0025] Weigh each component according to the proportion, put it in a power frequency electric furnace, heat it to 1250°C and melt it, stir it evenly with a graphite rod, and cover it with 12cm thick high-purity scaly graphite powder to prevent oxidation, and keep it warm for 1 hour , to detect whether the alloy composition is within the specified range. After the inspection is completed and qualified, continue to keep warm for about 40 minutes, then raise the temperature to 1300°C again, and turn on the vibration device of the industrial frequency electric furnace. The vibration frequency is 1 time / second. Continuous casting and rolling The method is t...

Embodiment 2

[0027] Example 2, a lead-free environmentally friendly copper-based alloy rod, consisting of the following components in weight percentage: zinc: 1%, tin: 7%, silicon: 1.5%, phosphorus: 0.1%, manganese: 0.1%, and the balance for copper. Its manufacturing process is as figure 1 As shown, perform the following steps in sequence:

[0028] Weigh each component according to the proportion, put it in a power frequency electric furnace, heat it to 1290°C and melt it, stir it evenly with a graphite rod, and cover it with 11cm thick high-purity scaly graphite powder to prevent oxidation, and keep it warm for 1.3 hours , to detect whether the alloy composition is within the specified range. After the inspection is completed and qualified, continue to keep warm for about 50 minutes, then raise the temperature to 1300°C again, and turn on the vibration device of the industrial frequency electric furnace. The vibration frequency is 1 time / second. Continuous casting and rolling The method...

Embodiment 3

[0030] Example 3, a lead-free environmentally friendly copper-based alloy rod, consisting of the following components in weight percentage: zinc: 4.5%, tin: 4%, silicon: 3%, phosphorus: 0.2%, manganese: 0.08%, and the balance for copper. Its manufacturing process is as figure 1 As shown, perform the following steps in sequence:

[0031] Weigh each component according to the proportion, put it in a power frequency electric furnace and heat it to 1300°C to melt, then stir it evenly with a graphite rod, and cover it with 13cm thick high-purity scaly graphite powder to prevent oxidation, and keep it warm for 1.5 hours , to detect whether the alloy composition is within the specified range, after the detection is completed and qualified, continue to keep warm for about 60 minutes, then raise the temperature to 1300°C again, turn on the vibration device of the industrial frequency electric furnace, the vibration frequency is 1 time per second, and adopts continuous casting and roll...

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Abstract

The invention provides a lead-free environment-friendly copper base alloy bar and a preparation method thereof. The lead-free environment-friendly copper base alloy bar comprises the following components by weight percent: 1-7% of zinc, 0.5-7% of tin, 0.5-6% of silicon, 0.05-0.25% of phosphorus, 0.01-0.15% of manganese and the balance of copper. The lead-free environment-friendly copper base alloy bar and the preparation method have the beneficial effects that the production process of continuous casting and rolling is adopted, thus omitting the steps of billet treatment and annealing extrusion in the traditional production process, shortening the production cycle, improving the production efficiency and greatly reducing the production cost; the alloy bar adopts silicon instead of lead in the traditional copper alloys and is lead-free, thus avoiding environmental pollution caused by using lead and being beneficial to environmental protection; the lead-free environment-friendly copper base alloy bar provided by the invention absolutely can replace tin bronze bars containing lead.

Description

technical field [0001] The invention relates to the field of alloy rod production, in particular to a lead-free and environment-friendly copper-based alloy rod and a method for manufacturing the alloy rod. Background technique [0002] Existing tin bronze materials often add lead elements in order to achieve their chip-easy performance. Lead-containing tin bronze has high wear resistance and good machinability, and has good fiber welding and welding performance. It is mainly used for manufacturing aviation﹑ Parts subject to friction and necessary welding in the automotive and other industrial sectors. However, due to the characteristics of lead, hot brittleness is very easy to occur during hot working, so only cold working can be carried out, which reduces the workability of alloy rods, and lead is very harmful to the environment. With the obvious improvement of environmental protection awareness , Bronze alloys containing lead elements can no longer meet the requirements o...

Claims

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Application Information

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IPC IPC(8): C22C9/04C22C1/02C22F1/08
Inventor 陆海荣孙飞赵勇
Owner SUZHOU JINCANG ALLOY NEW MATERIAL
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