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High-strength corrosion-resistant copper-based alloy pipe for ocean engineering and preparation method thereof

A technology of marine engineering and copper-based alloys, which is applied in the direction of pipes, rigid pipes, mechanical equipment, etc., can solve the problems of high production costs, achieve the effects of reducing processing procedures, reducing production costs, and improving production efficiency

Active Publication Date: 2014-12-17
SUZHOU JINCANG ALLOY NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the QAL9-4 aluminum-iron-copper-based alloy pipe needs to be forged to improve its mechanical properties, and the production cost is relatively high

Method used

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  • High-strength corrosion-resistant copper-based alloy pipe for ocean engineering and preparation method thereof
  • High-strength corrosion-resistant copper-based alloy pipe for ocean engineering and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] High-strength corrosion-resistant copper-based alloy pipes for marine engineering are composed of the following components: aluminum accounting for 16% of the total weight of the alloy pipe, iron accounting for 3% of the total weight of the alloy pipe, tin accounting for 0.5% of the total weight of the alloy pipe, and accounting for 0.5% of the total weight of the alloy pipe. 1% zinc by total tube weight, balance copper.

[0030] The above-mentioned high-strength corrosion-resistant copper-based alloy pipe for marine engineering is prepared by the following method:

[0031] Step 1: Place electrolytic copper, aluminum, iron, zinc, and tin in a power frequency electric furnace according to the ratio, heat to 1150-1250°C, and keep warm to 1100°C after they are completely melted;

[0032] Step 2: After fully stirring the completely melted alloy liquid with a graphite rod, cover it with high-purity scaly graphite powder to prevent its oxidation, with a thickness of about 15-...

Embodiment 2

[0041] High-strength corrosion-resistant copper-based alloy pipes for marine engineering are composed of the following components: aluminum accounting for 19% of the total weight of the alloy pipe, iron accounting for 5% of the total weight of the alloy pipe, tin accounting for 1.0% of the total weight of the alloy pipe, accounting for 3% zinc by total tube weight, with the balance copper.

[0042] The finished high-strength corrosion-resistant copper-based alloy pipe for marine engineering is obtained by the same method as in Example 1.

Embodiment 3

[0044] High-strength corrosion-resistant copper-based alloy pipes for marine engineering are composed of the following components: aluminum accounting for 17.5% of the total weight of the alloy pipe, iron accounting for 4% of the total weight of the alloy pipe, tin accounting for 0.75% of the total weight of the alloy pipe, accounting for 2% zinc by total tube weight, balance copper.

[0045] The finished high-strength corrosion-resistant copper-based alloy pipe for marine engineering is obtained by the same method as in Example 1.

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Abstract

The invention relates to a high-strength corrosion-resistant copper-based alloy pipe for ocean engineering. The alloy pipe comprises the following components: aluminum accounting for 13% to 23% of the total weight of the alloy pipe, iron accounting for 3% to 17% of the total weight of the alloy pipe, tin accounting for 0.5% to 8% of the total weight of the alloy pipe, zinc accounting for 1% to 15% of the total weight of the alloy pipe and the balance of copper. The invention further relates to a preparation method of the high-strength corrosion-resistant copper-based alloy pipe for the ocean engineering. According to the method, proper amount of the tin, the zinc and other elements are added on the basis of the traditional copper-based alloy; and the content of the aluminum is increased properly, thereby enhancing the compressive strength, the corrosion resistance and the like of the alloy. As a result, the performance of a bar material QAL9-4 made of the alloy is enhanced. Relative to the preparation method of the bar material QAL9-4, as the method provided by the invention is used, the only requirement is to squeeze the bar material without being forged, but the obtained mechanical performance is equal to that of the bar material after being forged. Therefore, the method provided by the invention has the advantages that the machining processes are reduced; the production efficiency is improved; and the production cost is lowered.

Description

technical field [0001] The invention relates to the field of alloy pipes, in particular to a high-strength corrosion-resistant copper-based alloy pipe for marine engineering and a preparation method thereof. Background technique [0002] With the rapid increase of population and the rapid development of social economy, the phenomenon of global resource shortage has emerged, such as the shortage of fresh water resources and energy resources, which has become an obstacle to the sustainable development of the global economy. Therefore, people have proposed the development of marine resources, the development of marine resources It will become a major research topic in this century. The application of copper-based alloy tubes in marine engineering is mainly divided into two categories: the first category is heat exchange tubes; the second category is pipes for pipelines. Since most of the seawater contact medium is seawater, pipes are required to have excellent seawater corrosi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C9/01C22C1/02F16L9/02B21C23/08
Inventor 孙飞
Owner SUZHOU JINCANG ALLOY NEW MATERIAL