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Erosion-resistant copper alloy utilized in ocean working condition and preparation method thereof

A copper alloy and erosion-resistant technology, which is applied in the field of erosion-resistant copper alloys for marine conditions and its preparation, can solve the problems of increasing hidden dangers of accidents, affecting the normal use of equipment, reducing the voyage rate of ships, etc., so as to improve the erosion resistance. performance, avoid grain boundary corrosion, and improve the effect of strength

Active Publication Date: 2017-12-08
HENAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, serious erosion or erosion corrosion still occurs in sea areas with high sand content such as the East China Sea, which will cause significant erosion and corrosion aging to key parts such as propellers, pipeline elbows, seawater pump blades, and pipeline valve seats, seriously affecting The normal use of equipment reduces the ship's voyage rate and increases the hidden danger of accidents

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] An erosion-resistant copper alloy for marine working conditions, which contains elemental components and corresponding mass percentages of 7.0% Ni, 5.0% Al, 0.15% Fe, 0.5% Mn, 0.15% Ti, 0.05% P, 0.2% Mg and 0.005% B, the balance is copper and unavoidable impurity elements.

[0041] The preparation method of the above-mentioned erosion-resistant copper alloy material for marine working conditions comprises the following steps:

[0042] (1) Ingredients

[0043] According to the above mass percentage, take the following raw materials: Cu-Mn master alloy, wherein the mass percentage of Mn is ≥19.8%, and the balance is copper; Cu-Fe master alloy, wherein the mass percentage of Fe is ≥9.8%, and the balance is copper ; Electrolytic Ni, wherein the mass percentage of Ni is ≥99.9%; Electrolytic Al, wherein the mass percentage of Al is ≥99.9%; Electrolytic Cu, wherein the mass percentage of Cu is ≥99.9%; Cu-Ti master alloy, wherein the mass percentage of Ti The percentage is ≥1...

Embodiment 2

[0056] An erosion-resistant copper alloy for marine working conditions, which contains elemental components and corresponding mass percentages of 8.5% Ni, 7.0% Al, 0.55% Fe, 1.0% Mn, 0.5% Ti, 0.1% P, 0.4% Mg and 0.0075% B, the balance is copper and unavoidable impurity elements.

[0057] According to the above mass percentage, take the following raw materials: Cu-Mn master alloy, wherein the mass percentage of Mn is ≥19.8%, and the balance is copper; Cu-Fe master alloy, wherein the mass percentage of Fe is ≥9.8%, and the balance is copper ; Electrolytic Ni, wherein the mass percentage of Ni is ≥99.9%; Electrolytic Al, wherein the mass percentage of Al is ≥99.9%; Electrolytic Cu, wherein the mass percentage of Cu is ≥99.9%; Cu-Ti master alloy, wherein the mass percentage of Ti The percentage is ≥19.8%, and the balance is copper; Cu-P master alloy, in which the mass percentage of P is ≥1.49%, and the balance is copper; pure Mg, in which the mass percentage of Mg is ≥99.9%; Cu-B ...

Embodiment 3

[0060] An erosion-resistant copper alloy for marine working conditions, which contains elemental components and corresponding mass percentages of 10.0% Ni, 10.5% Al, 1.0% Fe, 1.5% Mn, 1.0% Ti, 0.15% P, 0.6% Mg and 0.01% B, the balance is copper and unavoidable impurity elements.

[0061] According to the above mass percentage, take the following raw materials: Cu-Mn master alloy, wherein the mass percentage of Mn is ≥19.8%, and the balance is copper; Cu-Fe master alloy, wherein the mass percentage of Fe is ≥9.8%, and the balance is copper ; Electrolytic Ni, wherein the mass percentage of Ni is ≥99.9%; Electrolytic Al, wherein the mass percentage of Al is ≥99.9%; Electrolytic Cu, wherein the mass percentage of Cu is ≥99.9%; Cu-Ti master alloy, wherein the mass percentage of Ti The percentage is ≥19.8%, and the balance is copper; Cu-P master alloy, in which the mass percentage of P is ≥1.49%, and the balance is copper; pure Mg, in which the mass percentage of Mg is ≥99.9%; Cu-B ...

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Abstract

The invention relates to the field of ocean engineering, and particularly discloses an erosion-resistant copper alloy utilized in an ocean working condition and a preparation method thereof. The copper alloy comprises the following elements by mass percent: 7% to 10% of Ni, 5% to 10.5% of Al, 0.15% to 1% of Fe, 0.5% to 1.5% of Mn, 0.15% to 1% of Ti, 0.05% to 0.15% of P, 0.2% to 0.6% of Mg and 0.005% to 0.01% of B, and the balance being copper. The preparation method comprises the steps of sequentially adding electrolytic copper, a covering agent, a CnMn intermediate alloy, a CuCo intermediate alloy, CuFe intermediate alloy, electrolytic nickel, pure chromium, electrolytic aluminium, pure silicon and the covering agent; and then, carrying out phosphor copper deoxidation, stirring slag salvaging, temperature increasing and discharging. The preparation method has the advantages that cost is low and efficiency is high, the copper alloy material has performance like sandy seawater erosion corrosion resistance, ocean organism corrosion resistance and seawater high-speed flow corrosion resistance, and the requirement of ocean engineering on corrosion-resistant and abrasion-resistant materials can be met.

Description

technical field [0001] The invention relates to the field of marine engineering and marine equipment, in particular to an erosion-resistant copper alloy for marine working conditions and a preparation method thereof. Background technique [0002] In marine engineering, since the pipelines of ship seawater system are in direct contact with seawater and are mostly arranged in the bilge, the working environment is harsh, and the problem of corrosion by seawater has always been a prominent problem restricting its maximum performance. In ships, pumps, valve bodies, pipes and blade propellers for marine pipeline installations have relatively high requirements for corrosion resistance. In the metal components in the marine environment, the failure types mainly include erosion wear, uniform corrosion, pitting corrosion, crevice corrosion, cavitation corrosion, etc. These failure types are often related to structural design, metallurgical factors and operating conditions. [0003] S...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/06C22C9/01C22C1/03
CPCC22C1/03C22C9/01C22C9/06
Inventor 乔景振田保红张毅刘勇宋克兴周延军张彦敏贾淑果张学宾国秀花
Owner HENAN UNIV OF SCI & TECH
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