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New environment-friendly lead-free silicon-containing alloy material and preparation method thereof

A silicon alloy and new material technology, applied in the field of alloy rods, can solve the problems of difficult processing, high cost, hot brittleness, etc., and achieve the effects of improving mechanical properties, improving environmental performance and broad application prospects.

Active Publication Date: 2015-03-25
SUZHOU JINCANG ALLOY NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because it contains lead, it is easy to cause hot embrittlement during hot processing, so it can only be processed in a cold state, which is difficult to process and leads to high cost
And with the gradual improvement of people's awareness of environmental protection, lead-containing alloy rods have been unable to meet the requirements of high-end markets at home and abroad due to their environmental pollution.

Method used

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  • New environment-friendly lead-free silicon-containing alloy material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A new environment-friendly lead-free silicon-containing alloy material comprises the following components in percentage by weight: 6%-8% zinc, 6%-8% tin, 1%-3% silicon, and the balance copper. The preparation method is as follows: put each component in a power frequency electric furnace according to the proportion, heat it to 1250-1300 degrees and completely melt it, then keep it warm to 1200 degrees; stir the completely melted alloy liquid with a graphite rod, and put it on it Cover the high-purity scaly graphite powder with a thickness of about 11cm-13cm to prevent its oxidation; after 1.2-1.5 hours of heat preservation, use a direct-reading spectrometer to test the composition of the sample taken out of the furnace 3-5 times to determine its alloy composition Within the specified range; after further heat preservation for 60 minutes, the temperature was raised to 1300 degrees again, and the vibration device of the power frequency electric furnace was turned on, and a ...

Embodiment 2

[0031] A new environment-friendly lead-free silicon-containing alloy material is composed of the following components in weight percentage: 7% zinc, 6.8% tin, 2% silicon, and the balance copper. The preparation method is as follows: put each component in a power frequency electric furnace according to the proportion, heat it to 1300 degrees and completely melt it, then keep it warm to 1200 degrees; stir the completely melted alloy liquid with a graphite rod, and cover it with a thickness of about 12cm high-purity flaky graphite powder to prevent its oxidation; after 1.2-1.5 hours of heat preservation, use the Spike direct-reading spectrometer imported from Germany to test the composition of the sample taken out of the furnace 5 times to determine its alloy composition. Within the range; after further holding for 60 minutes, the temperature was raised to 1300 degrees again, and the vibration device of the power frequency electric furnace was turned on, and a solid alloy bar with...

Embodiment 3

[0034] A new environment-friendly lead-free silicon-containing alloy material comprises the following components in percentage by weight: 6% zinc, 6% tin, 1% silicon, and the balance copper. The preparation method is as follows: put each component in a power frequency electric furnace according to the proportion, heat it to 1250-1300 degrees and completely melt it, then keep it warm to 1200 degrees; stir the completely melted alloy liquid with a graphite rod, and put it on it Cover the high-purity scaly graphite powder with a thickness of about 11cm-13cm to prevent its oxidation; after 1.2-1.5 hours of heat preservation, use a direct-reading spectrometer to test the composition of the sample taken out of the furnace 3-5 times to determine its alloy composition Within the specified range; after further heat preservation for 60 minutes, the temperature was raised to 1300 degrees again, and the vibration device of the power frequency electric furnace was turned on, and a solid all...

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Abstract

The invention discloses a new environment-friendly lead-free silicon-containing alloy material. The new environment-friendly lead-free silicon-containing alloy material comprises the following components in percentage by weight: 6-8 percent of zinc, 6-8 percent of tin, 1-3 percent of silicon and the balance of copper. By the new material, the traditional lead element is replaced by a silicon element; under the condition that cost is not increased, the chip cutting performance of the existing tin bronze is preserved, and the environment protection performance of the alloy is improved; and phosphorus and aluminium elements are properly added, based on the advantages, the mechanical performance of the alloy also can be greatly improved, such as tensile strength, yield strength and elongation rate, and the new material has a wide application prospect.

Description

technical field [0001] The invention relates to the field of alloy rods, in particular to an environment-friendly lead-free silicon-containing alloy new material and a preparation method of the new material. 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 plays a good role in breaking chips during cutting; in the friction and wear environment, due to the lead shearing The shear strength is very low, and the lead on the surface of copper alloy parts makes the coefficient of friction of leaded copper alloys relatively low. Therefore, lead element is more commonly used in brass alloys. However, because it contains lead, it is easy to cause hot embrittlement during hot processing, so it can only be processed in a cold state, which is difficult to process and leads to high cost. And along with the gradual impr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C9/04C22C9/02C22C1/02
Inventor 孙飞
Owner SUZHOU JINCANG ALLOY NEW MATERIAL
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