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Extruded high-tin bronze alloy and preparation method thereof

A technology of extruding and forming high-tin bronze, which is applied in the field of tin-bronze alloys, can solve problems such as difficulty in meeting actual product requirements, hard tin-bronze alloys, and easy cracks, and achieve good market application prospects, reduce lead segregation, reduce The effect of the crack

Active Publication Date: 2012-01-18
HENAN UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the tin content of tin bronze alloys that can be directly plastically processed is less than 8%, and for tin bronze alloy products with a higher tin content, such as higher than 8%, the increase in tin content will lead to tin bronze alloys. Brittle and hard, with extremely poor plasticity, cracks, segregation and other defects are prone to occur during the plastic deformation process, so the preparation method of processed tin bronze alloys with a tin content of less than 8% is not suitable for tin bronze with a tin content of more than 8% Alloy Manufacturing
For tin bronze alloys with a tin content greater than 8%, the traditional preparation process is: batching→smelting→casting, but the density of the tin bronze alloy prepared by this melting and casting process is ≤8.9g / cm 3 , hardness ≤ 75HB, tensile strength ≤ 238MPa, elongation ≤ 5%, low density, serious casting defects and serious segregation, it is difficult to meet the actual product requirements

Method used

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  • Extruded high-tin bronze alloy and preparation method thereof
  • Extruded high-tin bronze alloy and preparation method thereof
  • Extruded high-tin bronze alloy and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0024] The extruded high-tin bronze alloy of this embodiment is composed of the following components in weight percentage: Sn 12%, Pb 1%, Ni 2%, impurity components Fe, Sb, Al, Zn, P, Si and Bi The total content of is 0.28%, and the balance is Cu.

[0025] The preparation method of the extruded high-tin bronze alloy of the present embodiment, the specific steps are:

[0026] (1) Prepare raw materials: take 1# electrolytic copper plate with a purity of 99.95%, 1# tin ingot with a purity of 99.90%, 1# nickel plate with a purity of 99.99%, 1# lead ingot with a purity of 99.994%, and then cut , drying and surface degreasing treatment, ready for use;

[0027] (2) Ingredients: Weigh the raw materials processed in step (1) according to the composition of the extruded high-tin bronze alloy;

[0028] (3) Melting: First add charcoal about 20cm thick into the melting furnace, then add electrolytic copper plates into the melting furnace, heat rapidly to melt the electrolytic copper plat...

Embodiment 2

[0035]The extruded high-tin bronze alloy of this embodiment is composed of the following components in weight percentage: Sn 10%, Pb 2.5%, Ni 3.5%, impurity components Fe, Sb, Al, Zn, P, Si and Bi The total content of is 0.25%, and the balance is Cu.

[0036] The preparation method of the extruded high-tin bronze alloy of the present embodiment, the specific steps are:

[0037] (1) Prepare raw materials: take 1# electrolytic copper plate with a purity of 99.95%, 1# tin ingot with a purity of 99.90%, 1# nickel plate with a purity of 99.99%, 1# lead ingot with a purity of 99.994%, and then cut , drying and surface degreasing treatment, ready for use;

[0038] (2) Ingredients: Weigh the raw materials processed in step (1) according to the composition of the extruded high-tin bronze alloy;

[0039] (3) Melting: First add charcoal about 20cm thick into the melting furnace, then add electrolytic copper plates into the melting furnace, heat rapidly to melt the electrolytic copper p...

Embodiment 3

[0045] The extruded high-tin bronze alloy of this embodiment is composed of the following components in weight percentage: Sn 8%, Pb 4%, Ni 5%, impurity components Fe, Sb, Al, Zn, P, Si and Bi The total content of is 0.23%, and the balance is Cu.

[0046] The preparation method of the extruded high-tin bronze alloy of the present embodiment, the specific steps are:

[0047] (1) Prepare raw materials: take 1# electrolytic copper plate with a purity of 99.95%, 1# tin ingot with a purity of 99.90%, 1# nickel plate with a purity of 99.99%, 1# lead ingot with a purity of 99.994%, and then cut , drying and surface degreasing treatment, ready for use;

[0048] (2) Ingredients: Weigh the raw materials processed in step (1) according to the composition of the extruded high-tin bronze alloy;

[0049] (3) Melting: First add charcoal about 20cm thick into the melting furnace, then add electrolytic copper plates into the melting furnace, heat rapidly to melt the electrolytic copper plate...

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Abstract

The invention discloses extruded high-tin bronze alloy and a preparation method thereof. The extruded high-tin bronze alloy comprises the following components by weight percent: 8-12% of Sn, 1-4% of Pb, 2-5% of Ni, less than or equal to 0.28% of Fe, Sb, Al, Zn, P, Si and Bi impurities, and the balance of Cu. The extruded high-tin bronze alloy is prepared by a solidification crystallization molding process under pressure. The extruded high-tin bronze alloy provided by the invention has the following advantages: (1) the components of the alloy are uniform, and are directly molded by extrusion in a liquid state, so that the segregation is improved, the cracks and are reduced and the like; and (2) the density of the alloy is high and is more than or equal to 9.0g / cm<3>, the hardness of the alloy is more than or equal to 125HB, the tensile strength is more than or equal to 350MPa, and the elongation is more than or equal to 15%.

Description

technical field [0001] The invention relates to the technical field of tin bronze alloys, in particular to an extruded high-tin bronze alloy and a preparation method thereof. Background technique [0002] Tin bronze alloy has high mechanical properties, good wear resistance and corrosion resistance, diamagnetism and low temperature toughness, and is easy to cut and process. It is mainly used to make elastic components and wear-resistant parts of steam boilers, sea ships and other machinery and equipment. At present, the tin content of tin bronze alloys that can be directly plastically processed is less than 8%, and for tin bronze alloy products with a higher tin content, such as higher than 8%, the increase in tin content will lead to tin bronze alloys. Brittle and hard, with extremely poor plasticity, cracks, segregation and other defects are prone to occur during the plastic deformation process, so the preparation method of processed tin bronze alloys with a tin content of...

Claims

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Application Information

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IPC IPC(8): C22C9/02C22C1/02B21C23/00
Inventor 宋克兴魏军周延军张彦敏蔡元京刘亚民赵保建郜建新翟冠峰赵培峰杨国义国秀花李红霞贾淑果白宁
Owner HENAN UNIV OF SCI & TECH
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