Pr-Nd-containing zinc-aluminum alloy wire and manufacturing method thereof

Abstract

The invention relates to a multielement zinc-aluminum alloy wire which comprises the following components in percentage by weight: 15-69% of Al, 0.2-3% of Si, 0.1-5% of Mg, 0.01-0.2% of Pr, 0.01-0.2% of Nd (the total amount of the two rare-earth elements is 0.02-0.40%), at most 1% of microelements and the balance of Zn. The resistivity of the zinc-aluminum alloy wire is 2.0-6.0 mu omega.cm, the specific gravity of the zinc-aluminum alloy wire is 3.18-5.69 is g / cm<3>, and the elongation percentage of the zinc-aluminum alloy wire is 10-25%; and thus, the zinc-aluminum alloy wire can be widely used in ships, power supply towers, large-size storage tanks, underground pipelines, tunnel frames and other facilities, and has very wide application prospects.

Description

technical field [0001] The invention relates to a multi-component zinc-aluminum alloy wire and a manufacturing method thereof, in particular to a zinc-aluminum alloy wire containing Pr and Nd and a manufacturing method thereof. Background technique [0002] As we all know, except for a few precious metals, metal materials will undergo chemical and electrochemical reactions with the surrounding medium and suffer from corrosion. Metal corrosion has become the greatest hazard to large steel structures, seriously affecting their safety and life. In addition, the wear and tear caused by various mechanical actions on the metal surface is also extremely serious. A large number of metal components fail due to corrosion and wear, resulting in great waste and loss. According to the statistics of some industrially developed countries, the annual loss of steel due to corrosion and wear accounts for about 10% of the total steel output, and the amount of loss accounts for about 2-4% of ...

AI Technical Summary

Problems solved by technology

For example, Chinese patent CN1718836A adds rare earth cerium (Ce) accounting for 0.05-0.3% of the total weight of the wire to Mg and Al metals to produce a rare earth aluminum-magnesium alloy spray-coated anti-corrosion wire, which is used for steel structures, especially water conservancy The long-term anti-corrosion of engineering gates has achieved positive protection effects, but it uses a single rare earth element cerium (Ce), which affects the further improvement of wire protection performance and is not conducive to popularization and application.

And experiments have shown that, using similar technical solutions, such as when the rare earth content is close to the lower limit, for example, when it is less than 0.08%, the effect of rare earth is extremely small; and when it is greater than 0.1%, the continued increase of the strength of rare earth to the zinc alloy is not obvious. Therefore, the application of this technology is very limited, and it has not been effectively applied to zinc-aluminum alloy wires with thermal sprayed metal coatings.

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