The production process and product advantages of C44300 copper rod are as follows:

1. Production process

Smelting and continuous casting

The raw materials (waste brass, waste copper, zinc ingots, etc.) are smelted in an industrial frequency furnace, and after the copper liquid is generated, it enters the continuous casting stage, and the cooling circulating water system is used to cool the copper rod blank. Large-tonnage horizontal continuous casting technology can improve the stability of ingot quality and achieve environmentally friendly production.

Extrusion molding

The large-tonnage reverse extrusion technology (such as 38MN reverse extruder) is used to hot extrude or cold process the continuous casting blank. This technology can cover the production of multiple grades, the product has high density and excellent strength, and the weight of a single ingot can reach nearly 1 ton, which significantly improves efficiency. The copper rods produced by the extrusion process have high tensile strength, hardness and straightness, which are better than ordinary cast rods.

Subsequent processing

Annealing: The copper rods after cold processing need to be annealed at low temperature to eliminate stress and prevent stress corrosion cracking.

Surface treatment: The copper oxide skin is removed by skinning, and the combined drawing technology is used to straighten and cut the length to reduce surface damage and improve the yield rate.

Short process optimization

Some companies use the "copper wire rod-continuous extrusion" short process to replace the traditional "ingot-hot extrusion-stretching" process, improve the level of automation and reduce energy consumption.

2. Product advantages

Excellent corrosion resistance

C44300 is arsenic-tin brass (Cu-Zn-Sn-As). Trace arsenic (0.03-0.06%) can inhibit dezincification corrosion and significantly improve corrosion resistance. It is suitable for corrosive environments such as seawater and chemical liquids. In recent years, the corrosion resistance has been further optimized by adding elements such as boron and nickel.

High mechanical properties

Tensile strength ≥410 MPa, elongation ≥8%, with both high strength and toughness.

It still maintains good mechanical properties at high temperatures and is suitable for pressure-resistant and high-temperature resistant parts.

Excellent processing performance

Excellent cold and hot processing performance, can be stamped, turned, welded and other complex processing.

High ductility is suitable for manufacturing precision parts (such as automotive synchronizer rings, medical parts, etc.). Wide range of applications

Mainly used in corrosion-resistant scenarios such as heat exchanger condenser tubes, chemical equipment conduits, and marine engineering components.

In the construction field, it is used for supporting structures due to its high strength and high rigidity.

High cost-effectiveness

Low material cost, easy processing, and short process technology reduce production costs, suitable for large-scale production.