Copper alloy for conditioner pipe

Abstract

Disclosed is a copper alloy for air-conditioner pipes, which comprises the following components (by weight percentage): Cu 99.9%, P 0.001-0.099%, 0.001-0.099% of mixed rare earth metal (Re) mainly including lightweight rare-earth elements such as La and Ce. The content of P is preferably 0.015-0.040% and 0.004-0.012%. The invention can improve the metal's corrosion resistance and increase the operating life for the air-conditioner pipes.

Description

technical field [0001] The patent of the invention relates to a copper alloy for air-conditioning pipes, which belongs to material alloying and material anticorrosion [0002] technology field. technical background [0003] Copper tubes for air-conditioning and refrigeration (referred to as air-conditioning tubes) are tubes specially used for heat exchangers in air conditioners and refrigeration systems. Wait. [0004] The material of existing air-conditioning and refrigeration copper pipes (abbreviated as air-conditioning pipes) is phosphorus deoxidized copper, which includes two grades TP1 and TP2, and the composition of each component is respectively by weight percentage: TP1 is Cu≥99.90%, P0.004 ~0.012%; TP2 is Cu≥99.9%, P0.015~0.040%. Although the two grades of phosphorus deoxidized copper have good toughness, welding performance and certain strength, density and corrosion resistance. However, in the manufacturing process of air-conditioning pipe...

AI Technical Summary

Problems solved by technology

However, in the manufacturing process of air-conditioning pipes, the following situations are prone to occur due to material problems: 1. The air-conditioning pipes are ruptured during assembly of the expansion pipes, resulting in the scrapping of the evaporator and condenser; and leakage; 3. When the air conditioner is in use, copper pipes produce pitting corrosion, which reduces t