C54400 copper rod is a lead-containing free-cutting phosphor bronze alloy. Its production process and product advantages are as follows:

1. Production process

Smelting and continuous casting

Using scrap brass, scrap copper and zinc ingots as raw materials, they are smelted in an industrial frequency furnace and then enter the continuous casting stage. Lead (3.5%~4.5%), tin, phosphorus and other alloy elements need to be added during the smelting process to optimize performance. The smoke and slag generated by smelting need to be treated for environmental protection. After continuous casting, copper rod billets are formed, and the temperature is controlled by a cooling circulating water system.

2. Hot extrusion and stretching

The copper billet can be greatly improved in density and strength by hot extrusion processing (such as 38MN reverse extruder). Modern processes use short-process technology, such as continuous extrusion of copper wire rods, to reduce production steps and improve the level of automation, and the yield rate is significantly improved. Some companies also combine processes such as skinning and annealing to improve surface finish and mechanical properties.

Precision machining

Subsequent steps include stamping, lathe processing, grinding and cleaning. The stamping process uses mold forming, lathe processing can achieve high-precision cutting, and scraps can be recycled. Modern equipment such as CNC lathes can meet the fine processing needs of complex parts.

2. Product advantages

Excellent cutting performance

The lead content is as high as 3.5%~4.5%, and the cutting performance is 4 times that of ordinary tin phosphor bronze. It is suitable for high-speed precision processing and has a high surface finish.

Excellent mechanical properties

The tensile strength can reach 275~450MPa (depending on the heat treatment state), and the hardness range is HRB 7~50, with both high strength and ductility. After annealing, the elongation is increased to more than 10%, which is suitable for heavy load and wear-resistant scenes.

Wear resistance and corrosion resistance

Phosphorus improves wear resistance and is suitable for transmission parts such as bearings, gears, and shafts. The resistance to seawater and chemical corrosion makes it outstanding in the fields of marine engineering and chemical industry.

Good processing adaptability

Supports a variety of processes such as cold processing, hot rolling, cold drawing, etc., and can produce bars with a diameter of 1~800mm, plates with a diameter of 0.1~300mm and customized pipes to meet the needs of special-shaped parts.

Environmental protection and efficient production

Adopt green processes such as frequency conversion energy-saving technology and natural gas heating to reduce energy consumption. Reverse extrusion technology reduces surface damage, improves the yield rate, and optimizes production costs.