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Multi-aluminum bronze material for pipe

A technology of aluminum bronze and new materials, applied in the field of copper alloy and aluminum bronze alloy materials, can solve the problems of low strength of aluminum brass and tin brass, high cost of titanium alloy and stainless steel, corrosion of dealloyed components, etc. The effect of thinness, low production cost, and excellent corrosion resistance

Inactive Publication Date: 2009-03-11
苏州有色金属研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The limitations and shortcomings of the above tube bundle materials used in seawater corrosion environment are: aluminum brass and tin brass have problems of low strength, dealloyed component corrosion (dezincification, dealumination) and serious erosion corrosion; High and difficult to process; titanium alloy and stainless steel have problems of high cost and serious marine biological pollution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036]According to the mass percentage of raw materials: Al 7.2wt.%, Fe 4.5wt.%, Mn 1.0wt.%, Ni2.6wt.%, the remaining components are Cu and unavoidable impurities. It is worth noting that during the melting process of the alloy, each element has different degrees of burning loss, and the burning loss rate is Al: 7%, Fe: 4%, Mn: 3.5%, Ni: 1.5%. should be supplemented. It is smelted in an intermediate frequency induction furnace and cast into ingots by vertical semi-continuous casting. After face milling, it is placed in a heating furnace and heated to 900°C, and after a certain period of heat preservation, it is hot-rolled on a hot-rolling mill to make a rolled slab. After surface treatment, multi-pass cold rolling to a 2mm thick plate, followed by final heat treatment to obtain a high-strength corrosion-resistant alloy material with excellent microstructure and properties.

[0037] Performance tests were carried out on the as-cast and heat-treated alloys of this embodiment, ...

Embodiment 2

[0041] According to the mass percentage of raw materials: Al 5.8wt.%, Fe 1.0wt.%, Mn 4.5wt.%, Ni 3.2wt.%, the remaining components are Cu and unavoidable impurities. It is worth noting that during the alloy smelting process, each element has different degrees of burning loss, and its burning loss rate is Al: 8%, Fe: 3%, Mn: 3.2%, Ni: 1.7%. should be supplemented. It is smelted in an intermediate frequency induction furnace and cast into ingots by vertical semi-continuous casting. After face milling, it is placed in a heating furnace and heated to 900°C, and after a certain period of heat preservation, it is hot-rolled on a hot-rolling mill to make a rolled slab. After surface treatment, multi-pass cold rolling to a 2mm thick plate, followed by final heat treatment to obtain a high-strength corrosion-resistant alloy material with excellent microstructure and properties.

[0042] Performance tests were performed on the alloy in this embodiment as cast and after heat treatment,...

Embodiment 3

[0046] According to the mass percentage of raw materials: Al 10.0wt.%, Fe 3.2wt.%, Mn 2.5wt.%, Ni 0.8wt.%, the remaining components are Cu and unavoidable impurities. It is worth noting that during the alloy smelting process, each element has different degrees of burning loss, and its burning loss rate is Al: 7.4%, Fe: 3.5%, Mn: 3.9%, Ni: 1.4%. should be supplemented. It is smelted in an intermediate frequency induction furnace and cast into ingots by vertical semi-continuous casting. After face milling, it is placed in a heating furnace and heated to 900°C, and after a certain period of heat preservation, it is hot-rolled on a hot-rolling mill to make a rolled slab. After surface treatment, multi-pass cold rolling to a 2mm thick plate, followed by final heat treatment to obtain a high-strength corrosion-resistant alloy material with excellent microstructure and properties.

[0047] Performance tests were performed on the alloy in this embodiment as cast and after heat treat...

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Abstract

The invention provides a novel multielement aluminum bronze material for a pipe. The compositions of the novel multielement aluminum bronze material for the pipe are 4.0 to 10 weight percent of aluminum, 1.0 to 4.5 weight percent of iron, 1.0 to 4.5 weight percent of manganese, 0.8 to 4.0 weight percent of nickel, and the balance being copper and unavoidable impurities. Under the cast condition, the tensile strength of the novel multielement aluminum bronze material is more than 380 MPa; the yield strength is more than 179 MPa; the tensile ratio is more than 0.47; and the extensibility is more than 26.2 percent. Under the annealing condition, the tensile strength of the of the novel multielement aluminum bronze material is more than 523MPa; the yield strength is more than 282 MPa; the tensile ratio is more than 0.54; the extensibility is more than 41.2 percent; and the fully impregnated uniform corrosion rate is between 0.01 and 0.04 mm / a. The copper alloy has superior performance, is particularly suitable for the environment with high seawater flow velocity, and is an optimum material for manufacturing seawater desalination condenser equipment, seawater condenser equipment of ships and condensers of littoral power plants.

Description

technical field [0001] The invention relates to a copper alloy, in particular to an aluminum bronze alloy material with low cost, high strength and excellent seawater corrosion resistance, and belongs to the technical field of nonferrous metals. Background technique [0002] Aluminum bronze alloy has excellent physical and chemical properties, mechanical properties, corrosion resistance and wear resistance, and is a kind of engineering material with excellent comprehensive properties. Therefore, it occupies a very important position in civil and military industries, and is widely used in machinery industry, shipbuilding Structural parts, wear-resistant parts and corrosion-resistant parts used in marine industry, home appliance industry, petrochemical industry, electrical industry and construction industry. [0003] At present, the corrosion-resistant materials used for condensers in various countries in the world have been using As-added tin brass, As-added aluminum brass, a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/00
Inventor 杨春秀郭富安李华清汤玉琼朱永兵陈忠平
Owner 苏州有色金属研究院有限公司
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