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High-strength and high-corrosion-resistant aluminum alloy for heat exchanger pipe, and heat exchanger pipe manufactured therefrom

A technology for heat exchangers and aluminum alloys, which is applied in heat exchange equipment, lighting and heating equipment, metal material coating technology, etc., can solve the problems of insufficient extrudability of aluminum alloys and reduced productivity, and achieve excellent results. The effect of reducing the manufacturing unit price and maintaining physical properties

Pending Publication Date: 2021-09-24
LG CABLE LTD (KR)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the aluminum alloy has insufficient extrudability, and extrusion defects frequently occur when piping is extruded from the billet or wire rod produced therefrom, thereby greatly reducing productivity

Method used

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  • High-strength and high-corrosion-resistant aluminum alloy for heat exchanger pipe, and heat exchanger pipe manufactured therefrom
  • High-strength and high-corrosion-resistant aluminum alloy for heat exchanger pipe, and heat exchanger pipe manufactured therefrom
  • High-strength and high-corrosion-resistant aluminum alloy for heat exchanger pipe, and heat exchanger pipe manufactured therefrom

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0082] 1. Manufacturing example

[0083] Through the continuous casting and calendering method, aluminum wires are manufactured separately from various aluminum alloys (750-900° C.), and wound on bobbins in the form of coils, and the various aluminum alloys include the contents shown in Table 1 below. Alloying elements, the balance is composed of aluminum and other unavoidable impurities. Among them, regarding the addition of titanium (Ti) as an alloying element, in Examples 1 to 7 and Comparative Examples 1 to 6, 8 to 12, Al-Ti-B alloy was added to the aluminum alloy melt before continuous casting and rolling In contrast, in Comparative Example 13, Ti and other alloying elements were added at the same time.

[0084] In addition, in order to homogenize the various aluminum wires, after heat treatment in the order of holding at 450 to 650° C. for 10 to 25 hours and then performing air cooling, a fine structure as shown in Table 1 below was achieved. characteristic.

[0085] ...

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Abstract

The present invention relates to a high-strength and high-corrosion-resistant aluminum alloy for a heat exchanger pipe, and a heat exchanger pipe manufactured therefrom and, specifically, to: an aluminum alloy which meets all of the strength and corrosion resistance requirements for a heat exchanger pipe alloy, and extrusion conflicting with strength, and in which the modification of an alloy structure before and after heat treatment at a high temperature can be minimized or avoided and manufacturing costs are reduced; and a heat exchanger pipe manufactured therefrom.

Description

[0001] This application is a divisional application of an application with an application date of December 30, 2015, an application number of 201580002255.4, and an invention title of "High-strength and high-corrosion-resistant aluminum alloy for heat exchanger piping and heat exchanger piping". technical field [0002] The present invention relates to a high-strength, high-corrosion-resistant aluminum alloy for heat exchanger piping, and a heat-exchanger piping made of the high-strength, high-corrosion-resistant aluminum alloy. Specifically, it relates to a method that not only satisfies the strength, corrosion resistance, and extrudability that are in conflict with the strength required for alloys for heat exchanger piping, but also minimizes or avoids deformation of the alloy structure before and after high-temperature heat treatment, A high-strength, high-corrosion-resistant aluminum alloy for heat exchanger piping that saves manufacturing costs, and a heat-exchanger piping...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F28F19/06F28F21/08C22C1/02C22C1/03C22C21/00C22C21/02C22C21/14C22F1/04C22F1/043C22F1/057C23C4/08C23C4/131
CPCC22C1/026C22C1/03C22C21/00C22F1/04C23C4/08F28F19/06F28F21/084C23C4/06F28F21/08
Inventor 金贤洙金尚谦
Owner LG CABLE LTD (KR)
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