Preparation method of high-elasticity, corrosion-resistant and wear-resistant Cu-Ni-Sn alloy

A cu-ni-sn, corrosion-resistant technology, which is used in the preparation of corrosion-resistant and wear-resistant Cu-Ni-Sn alloys, and in the field of high elasticity, can solve the problem of reducing product fatigue life, increasing the difficulty of plastic forming of materials, and microscopic cracks in structures and other problems, to achieve the effect of improving service life, obvious synergy, and alleviating alloy segregation

Inactive Publication Date: 2019-12-31
JIANGYIN SANLING METAL PROD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Domestic research work in this field has continued for more than 20 years, but so far, many research results are still in the laboratory stage, and the research and development of large-scale bar products is still blank; especially when the Sn content in the Cu-Ni-Sn alloy composition When it is higher, the as-cast structure is a dendrite with obvious composition segregation, which mainly shows that the liquid alloy first crystallizes a dendritic α solid solution enriched with Cu and Ni atoms, and between dendrites is a solid solution enriched with solute atoms Sn, and Varying quantity and size (Cu, Ni) 3 Sn compounds, thus increasing the difficulty of plastic forming of the material, easily induce microcracks in the structure, and reduce the fatigue life of the product

Method used

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  • Preparation method of high-elasticity, corrosion-resistant and wear-resistant Cu-Ni-Sn alloy

Examples

Experimental program
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Effect test

Embodiment 1

[0037] A kind of highly elastic, corrosion-resistant, wear-resistant Cu-Ni-Sn alloy preparation method, the steps of described preparation method are:

[0038] Step 1: The weight percentage of each component to prepare Cu-Ni-Sn alloy is: Ni 15.6%, Sn8.7%, Mn0.5%, trace elements Cr0.03%, Nb0.03%, Si0.03% , Zr0.03% and Ti0.03%, the balance is Cu.

[0039] Step 2: The above-mentioned alloy is smelted by vacuum induction smelting or non-vacuum smelting with covering protection. The feeding materials are Cu and Ni at the same time, and Sn, Mn and trace elements are added after Cu and Ni are melted and refined, and melted. Afterwards, casting is carried out, and the furnace temperature is controlled to be 1100°C.

[0040] Step 3: Apply electromagnetic stirring during the solidification process until the alloy liquid is completely solidified, the electromagnetic stirring power: 100KW, and the stirring time is 50s.

[0041] Step 4: The above-mentioned cast alloy is subjected to homo...

Embodiment 2

[0044] A kind of highly elastic, corrosion-resistant, wear-resistant Cu-Ni-Sn alloy preparation method, the steps of described preparation method are:

[0045] Step 1: The percentage by weight of each component to prepare Cu-Ni-Sn alloy is: Ni16%, Sn9.5%, Mn0.7%, trace elements Cr0.03%, Nb0.03%, Si0.03%, Zr0.03% and Ti0.03%, the balance is Cu.

[0046] Step 2: The above-mentioned alloy is smelted by vacuum induction smelting or non-vacuum smelting with covering protection. The feeding materials are Cu and Ni at the same time, and Sn, Mn and trace elements are added after Cu and Ni are melted and refined, and melted. Afterwards, casting is carried out, and the furnace temperature is controlled to be 1200°C.

[0047] Step 3: Apply electromagnetic stirring during the solidification process until the alloy liquid is completely solidified, the electromagnetic stirring power: 200KW, and the stirring time is 80s.

[0048] Step 4: The above-mentioned cast alloy is subjected to homogen...

Embodiment 3

[0051] The only difference from Example 1 is that the electromagnetic stirring power is 250KW.

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Abstract

The invention relates to a preparation method of high-elasticity, corrosion-resistant and wear-resistant Cu-Ni-Sn alloy. The Cu-Ni-Sn multi-element alloy is obtained through vacuum induction melting or covering protection type non-vacuum smelting. In the casting forming process, electromagnetic stirring is applied until alloy liquid is complete solidified, and then the as-cast alloy is subjected to homogenization annealing, hot rolling and cogging, solid solution treatment, cold deformation, spinodal decomposition and other processes. The preparation method of the Cu-Ni-Sn alloy is capable ofrefining crystalline grains, reducing dendritic spacing and eliminating alloy microscopic and macroscopic structure and component segregation, provides implementation conditions for follow-up alloy plastic processing, spinodal decomposition and other processes, and has the beneficial effects that energy is saved, the production efficiency is improved, the service life of the alloy is prolonged, and the production cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of copper alloy material processing, and in particular relates to a preparation method of a highly elastic, corrosion-resistant and wear-resistant Cu-Ni-Sn alloy. Background technique [0002] Beryllium bronze is the most widely used high-strength copper alloy, but the beryllium-containing compound dust and smoke emitted during the production of beryllium copper alloys can cause acute and chronic poisoning of various organs in the human body, so beryllium is listed as the most toxic in various industries. Serious pollutants, all countries in the world restrict the production of beryllium-containing materials in their own countries. In the 1970s, the United States took the lead in the research of beryllium bronze substitute materials, developed three kinds of Cu-Ni-Sn alloy materials by spinodal heat treatment process, and incorporated them into the AMS standard system in the 1980s. [0003] Domestic researc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/06C22C1/02B22D27/02C22F1/08
CPCB22D27/02C22C1/02C22C9/06C22F1/002C22F1/08
Inventor 徐玉松黄海冯雪梅彭红兵李小兵张静孙胡虎杰冯秀梅陆筱彬陈君
Owner JIANGYIN SANLING METAL PROD
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