Leadless copper alloy for amiable cutting smithing

Abstract

The invention relates to a lead-free copper alloy which is easy to cut and forge, which relates to a low-lead brass alloy pipe and steel bar which are used in various hot-water heating, sanitary spare parts and equipment which is forged or is directly processed and produced in hot-water heating industry and sanitary industry. The invention is characterized in that the percentage by weight composition of alloy comprises Cu 57.5%-59.0%, Fe 0.05%-0.2%, Si 0.3%-0.4%, Bi 0.7%-1.2% and the allowance is zinc and unavoidable impurity, wherein Pb<=0.05, Sn<=0.2%, Ni<=0.2%. The alloy component of lead-free copper alloy which is easy to cut and forge of the invention is on the basis of copper and adds main elements such as proper zinc, antimony, bismuth, aluminium, iron and the like, which strictly controls impurity component, easy-cutting brass alloy material for casting which is produced is particularly suitable for various hot-water heating, sanitary components and equipment, and the products have the advantages of aesthetic appearance, compact structure, clean shape and bright color, copper alloy pipe and steel bar which are produced by the lead-free recasting copper alloy are particularly applicable for processing vehicles, milling, grinding, polishing, welding, electroplating and the like besides the above advantages, and has the advantages of corrosion prevention, long service span and the like.

Description

technical field

[0001] A lead-free copper alloy for easy cutting and forging, relating to low-lead brass alloy tubes and rods used for forging or direct machining for various water heaters, bathroom parts and equipment in plumbing, bathroom and other industries . Background technique

[0002] Due to its excellent casting performance, machine grinding and polishing performance, electroplating performance and corrosion resistance, copper alloy has been widely used in various water heating, sanitary parts and equipment manufacturing fields for a long time, with long service life and good performance.

[0003] For many years, the copper alloy used in the manufacture of various water heaters, sanitary parts and equipment is usually a lead brass alloy material containing 1% to 3.5% lead. Because the lead brass alloy contains a certain amount of lead, it has good machinability. Therefore, leaded brass has always been used for forging or direct machining into some water heaters, o...