Novel copper-based alloy pipe for high speed railway and preparation method of alloy pipe

Abstract

The invention provides a novel copper-based alloy pipe for a high speed railway and a preparation method of the alloy pipe. The novel copper-based alloy pipe for the high speed railway comprises the following components based on the total weight of the alloy pipe: 0.1-0.8 percent of aluminum, 0.05-0.5 percent of phosphorus, 0.5-1.5 percent of antimony, 0.2-0.5 percent of magnesium, 1-3 percent of silicon, 10-13 percent of tin, 4-6 percent of zinc and the balance of copper. Due to the addition of magnesium element, addition of lead is avoided on the basis that the machinability and wear resistance and antifriction property of the original lead-containing tin bronze are maintained or are not obviously reduced. According to the added magnesium element, single phases in diffuse distribution are formed in the copper alloy and achieve the chip breaking effects during cutting, so that the machinability of the copper alloy is improved.

Description

technical field

[0001] The invention relates to the field of alloy pipes, in particular to a novel copper-based alloy pipe for high-speed railways and a preparation method thereof. Background technique

[0002] The reason why lead-containing copper alloy has good cutting performance and anti-friction and wear resistance is mainly because lead exists as a single item in copper alloy, which plays a good role in breaking chips during cutting; in the friction and wear environment, due to the lead The shear strength is very low, and the lead on the surface of copper alloy parts makes leaded copper alloys have a relatively low coefficient of friction. Therefore, lead element is more commonly used in brass alloys.

[0003] However, because lead is a heavy metal with high toxicity, with the increasing awareness of environmental protection, bronze alloys containing lead elements can no longer meet the requirements of high-end markets at home and abroad. Contents of the invention ...