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Corrosion-resistant copper alloy and preparation method thereof

A copper alloy and corrosion-resistant technology, which is applied in the field of alloy materials, can solve problems such as the complex composition of copper alloy elements, achieve the effects of improving corrosion potential and passivation ability, excellent mechanical properties, and enhancing erosion resistance

Inactive Publication Date: 2021-01-12
XI'AN POLYTECHNIC UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a corrosion-resistant copper alloy, which solves the problem of complex composition of copper alloy elements in the prior art

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0027] A preparation method of a corrosion-resistant copper alloy, specifically comprising the following steps:

[0028] Step 1. Carry out corresponding degreasing, rust removal and drying treatment on the electrolytic copper plate, electrolytic nickel plate, aluminum plate, copper-iron master alloy, copper-manganese master alloy and mixed rare earth; the mixed rare earth is a mixture of La and Ce;

[0029] Step 2. Weigh the pretreated electrolytic copper plate, electrolytic nickel plate, aluminum plate, copper-iron master alloy, copper-manganese master alloy and mixed rare earth, so that the mass percentage of the above components is Ni 6-8%, Al 3- 7%, Fe 1-1.6%, Mn 0.4-1%, and mixed rare earth 0.032-0.045%, the balance is Cu and unavoidable impurities, and the percentage of La is 35-45%;

[0030] Step 3. In a slightly oxidizing atmosphere, put the electrolytic copper plate and the electrolytic nickel plate into the furnace to melt to obtain the first alloy liquid, and then a...

Embodiment 1

[0035] Step 1. Carry out corresponding degreasing, rust removal and drying treatment on the electrolytic copper plate, electrolytic nickel plate, aluminum plate, copper-iron master alloy, copper-manganese master alloy and mixed rare earth; the mixed rare earth is a mixture of La and Ce;

[0036] Step 2. Weigh the pretreated electrolytic copper plate, electrolytic nickel plate, aluminum plate, copper-iron master alloy, copper-manganese master alloy and mixed rare earth, so that the mass percentage of the above components is Ni 7%, Al 3%, Fe 1.2%, Mn 0.8% and mixed rare earth 0.032%, the balance is Cu and unavoidable impurities, and the percentage of La is 35%;

[0037] Step 3. In a micro-oxidizing atmosphere, put the electrolytic copper plate and the electrolytic nickel plate into the furnace to melt to obtain the first alloy liquid, and then add the mixture of calcined charcoal and plant ash after drying at about 200°C to cover the first alloy liquid ;When the temperature reac...

Embodiment 2

[0041] Step 1. Carry out corresponding degreasing, rust removal and drying treatment on the electrolytic copper plate, electrolytic nickel plate, aluminum plate, copper-iron master alloy, copper-manganese master alloy and mixed rare earth; the mixed rare earth is a mixture of La and Ce;

[0042] Step 2. Weigh the pretreated electrolytic copper plate, electrolytic nickel plate, aluminum plate, copper-iron master alloy, copper-manganese master alloy and mixed rare earth, so that the mass percentage of the above components is Ni 7%, Al 5%, Fe 1.2%, Mn 0.8% and mixed rare earth 0.045%, the balance is Cu and unavoidable impurities, and the percentage of La is 45%;

[0043] Step 3. In a micro-oxidizing atmosphere, put the electrolytic copper plate and the electrolytic nickel plate into the furnace to melt to obtain the first alloy liquid, and then add the mixture of calcined charcoal and plant ash after drying at about 200°C to cover the first alloy liquid ;When the temperature reac...

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Abstract

The invention discloses a corrosion-resistant copper alloy and a preparation method thereof. The preparation method comprises the following steps of pretreating an electrolytic copper plate, an electrolytic nickel plate, an aluminum plate, a copper-iron intermediate alloy, a copper-manganese intermediate alloy and mixed rare earth, wherein the mixed rare earth is a mixture of La and Ce; weighing raw materials, wherein the raw materials comprise, by mass, 6-8% of Ni, 3-7% of Al, 1-1.6% of Fe, 0.4-1% of Mn, 0.032-0.045% of mixed rare earth and the balance Cu, and the percentage content of La is35-45%; sequentially putting the electrolytic copper plate, the electrolytic nickel plate, the copper-iron intermediate alloy, the copper-manganese intermediate alloy and the mixed rare earth wrappedby copper foil into a smelting furnace for primary smelting, and adding the aluminum plate into the smelting furnace for secondary smelting after smelting and deslagging; pouring the melt into a centrifugal casting machine for cooling and solidification to form a blank, and carrying out processing treatment to obtain a corrosion-resistant copper alloy ingot; and carrying out heating and preservingheat, and then putting the corrosion-resistant copper alloy ingot into an extrusion die for hot extrusion deformation processing to obtain the corrosion-resistant copper alloy.

Description

technical field [0001] The invention belongs to the technical field of alloy materials, relates to a corrosion-resistant copper alloy, and also relates to a preparation method of the above-mentioned corrosion-resistant copper alloy. Background technique [0002] Copper and its alloys are widely used in shipbuilding, marine engineering and seawater chemical industry due to their high strength, good corrosion resistance and anti-microbial corrosion. They are mainly used for ship shells, various wires, pumps Body, valve body, ship propeller, seawater desalination and ship condensing pipe, etc. However, due to the particularity of the ocean, copper and its alloys are often severely corroded. [0003] At present, the corrosion-resistant copper alloys that are researched and applied more at home and abroad mainly include brass, tin bronze, B10 (Cu-10Ni-1Fe-1Mn), B30 (Cu-30Ni-1Fe-lMn), etc. However, complex and changeable The severe marine conditions make the service conditions o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/06C22C9/01C22C1/03C22C1/06
CPCC22C1/03C22C1/06C22C9/01C22C9/06
Inventor 常延丽王金龙梁苗苗付翀闫贞刘鑫
Owner XI'AN POLYTECHNIC UNIVERSITY
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