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Corrosion resistant multi-aluminum bronze material for pipe

An alloy material, aluminum bronze technology, applied in the field of non-ferrous metals, can solve the problems of high cost of titanium alloy and stainless steel, low strength of aluminum brass and tin brass, corrosion of dealloyed components, etc., to achieve low production cost and improve utilization rate , the effect of excellent corrosion resistance

Active Publication Date: 2009-05-20
CHINALCO MATERIALS APPL RES INST CO LTD
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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-mentioned 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

[0035]According to the mass percentage of raw materials: Al 7.3wt%, Fe 4.4wt%, Mn 1.1wt%, Ni 2.6wt%, Cr 0.05wt%, 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 its burning loss rate is Al: 7%, Fe: 4%, Mn: 3.5%, Ni: 1.5%, Cr: 1.8% , should be supplemented during the batching process. It is smelted in an intermediate frequency induction furnace and cast into ingots by vertical semi-continuous casting. After face milling, it is heated to 900°C in a heating furnace, 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.

[0036] Performance tests were carried out on the as-cast and hea...

Embodiment 2

[0040] According to the mass percentage of raw materials: Al 5.9wt%, Fe 1.1wt%, Mn 4.2wt%, Ni 3.0wt%, Cr 0.25wt%, 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 its burning loss rate is Al: 8%, Fe: 3%, Mn: 3.2%, Ni: 1.7%, Cr: 1.8% , should be supplemented during the batching process. It is smelted in an intermediate frequency induction furnace and cast into ingots by vertical semi-continuous casting. After face milling, it is heated to 900°C in a heating furnace, 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.

[0041] Performance tests were performed on the alloy in this em...

Embodiment 3

[0045] According to the mass percentage of raw materials: Al 10.0wt%, Fe 3.3wt%, Mn 2.4wt%, Ni 0.8wt%, Cr 0.5wt%, 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 its burning loss rate is Al: 7.4%, Fe: 3.5%, Mn: 3.9%, Ni: 1.4%, Cr: 1.8% , should be supplemented during the batching process. It is smelted in an intermediate frequency induction furnace and cast into ingots by vertical semi-continuous casting. After face milling, it is heated to 900°C in a heating furnace, 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.

[0046] Performance tests were performed on the alloy in thi...

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Abstract

The invention provides a pipe corrosion-resistant multielement aluminium bronze alloy material and the ingredients are as follows: 4.0 to 10.0wt percent of Al, 1.0 to 4.5wt percent of Fe, 1.0 to 4.5wt percent of Mn, 0.8 to 4.0wt percent of Ni, 0.05 to 0.5wt percent of Cr and the balance of Cu and unavoidable impurities; in casting state, the tensile strength is more than 385MPa, the yield strength is more than 180MPa, the yield ratio is more than 0.48, and the specific elongation is more than 27 percent; in annealing state, the tensile strength is more than 525MPa, the yield strength is more than 285MPa, the yield ratio is more than 0.55, the specific elongation is more than 42 percent and the complete immersion uniform corrosion rate is 0.01 to 0.035mm / a; the copper alloy has excellent performance, is particularly suitable for the environment with high flow rate of seawater and is an ideal material for manufacturing sea water desalinating condenser equipment, shipping sea water condenser equipment and seashore power plant condensers.

Description

technical field [0001] The invention relates to a copper alloy, in particular to a corrosion-resistant multi-element aluminum bronze alloy material for pipes, which belongs to the technical field of non-ferrous metals. Background technique [0002] Aluminum bronze alloy has excellent physical and chemical properties, mechanical properties, corrosion resistance and wear resistance. It is a class of engineering materials with excellent comprehensive properties. Structural parts, wear-resistant parts and corrosion-resistant parts in marine industry, household appliance industry, petrochemical industry, electrical industry and construction industry, etc. [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, and white copper containing 10% and 30% nickel, and titanium alloys and stainless steels are also used. [0004] With the continuous deterioration of seawater ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/01
Inventor 杨春秀郭富安汤玉琼陈忠平朱永兵李华清
Owner CHINALCO MATERIALS APPL RES INST CO LTD
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