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Copper base alloy bar containing silicon and aluminium and preparation method thereof

A technology of copper-based alloy and copper rod, which is applied in the field of copper-based alloy rod containing silicon and aluminum and its preparation, can solve the problems of polluted air, emission of lead dust, harmfulness to human body, etc., and achieve the effect of inhibiting lead dissolution and reducing pollution

Inactive Publication Date: 2013-07-10
SUZHOU JINCANG ALLOY NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, when lead is heated to 400-500°C, lead vapor will escape and form lead smoke. In the process of manufacturing lead powder and plates with lead ingots, lead dust will be released and pollute the air. When the lead smoke in the air reaches A certain concentration is harmful to the human body

Method used

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  • Copper base alloy bar containing silicon and aluminium and preparation method thereof
  • Copper base alloy bar containing silicon and aluminium and preparation method thereof
  • Copper base alloy bar containing silicon and aluminium and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The preparation method of the copper-based alloy preparation bar of embodiment 1, such as figure 1 shown, including the following steps:

[0027] 1) Place electrolytic copper, silicon, aluminum and zinc in a power frequency electric furnace according to the ratio, heat to 1200-1250 degrees, and keep warm to 1150 degrees after completely melting;

[0028] 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 10-15cm;

[0029] 3) After 1-1.5 hours of heat preservation, use the German Spike direct-reading spectrometer to conduct 3-6 composition inspections on the samples taken out of the power frequency electric furnace to confirm that the alloy composition is within the specified range;

[0030] 4) After further holding for 1-1.5 hours, heat up to 1200 degrees again, and turn on the vibration device of the power frequency electric furnace, and use the h...

Embodiment 2

[0036] A copper-based alloy rod containing silicon and aluminum, its mass percentage composition is: copper 76%; silicon 0.05%; aluminum 1.8%; the balance is zinc.

[0037] The preparation method of the copper-based alloy rod containing silicon and aluminum in Example 2 is similar to that in Example 1, except that the ratio of raw materials is different.

Embodiment 3

[0039] A copper-based alloy rod containing silicon and aluminum, its mass percentage composition is: copper 76%; silicon 0.05%; aluminum 1.8%; the balance is zinc.

[0040] The preparation method of the copper-based alloy rod containing silicon and aluminum in Example 3 is similar to that in Example 1, the difference lies in the ratio of raw materials.

[0041] The properties of the new lead-free copper alloy material used for welding provided by the present invention and the traditional welding material are shown in Table 1.

[0042] Table 1 Comparison of properties between copper-based alloy rods containing silicon and aluminum and lead-containing tin bronze

[0043]

[0044]

[0045] The copper-based alloy rod containing silicon and aluminum of the present invention is based on maintaining or not significantly reducing the machinability and wear-resistance and friction-reducing properties of the original lead-containing tin bronze, eliminating the addition of lead and...

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Abstract

The invention discloses a copper base alloy bar containing silicon and aluminium and a preparation method thereof. The copper base alloy bar comprises the following ingredients by weight percent: 72-76% of copper, 0.05-0.5% of silicon, 1-1.8% of aluminium and the balance of zinc. On the basis of maintaining or not obviously reducing the cutability, wear resistance and antifriction property of original lead and tin containing bronze, the copper base alloy puts an end to addition of lead and inhibits dissolution of lead by adding elements such as silicon and aluminium, thus effectively reducing the pollution.

Description

technical field [0001] The invention belongs to the technical field of nonferrous metal processing, and in particular relates to a copper-based alloy rod containing silicon and aluminum and a preparation method thereof. Background technique [0002] The reason why the lead-containing copper alloy has good cutting performance and anti-friction and wear resistance is mainly because lead exists in a single item in the copper alloy, which can play a good role in breaking chips during cutting. In the friction and wear environment, due to the very low shear strength of lead, the lead on the surface of copper alloy parts makes the friction coefficient of lead-containing copper alloys relatively low. Therefore, lead element is more commonly used in brass alloys. [0003] However, when lead is heated to 400-500°C, lead vapor will escape and form lead smoke. In the process of manufacturing lead powder and plates with lead ingots, lead dust will be released and pollute the air. When t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/04B22D11/045B21C23/08C22F1/08
Inventor 孙飞赵勇
Owner SUZHOU JINCANG ALLOY NEW MATERIAL
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