Production process and product advantages of C35330 copper rod:

1. Production process

Smelting and continuous casting technology

C35330 copper rod uses recycled copper (such as scrap brass, copper) and zinc ingots as raw materials, and is smelted by industrial frequency furnace or medium frequency electric furnace. During the smelting process, the temperature must be precisely controlled (about 900-1000℃), and slag removers such as borax are added to remove impurities. After the molten copper water is treated in an insulation furnace, it is directly formed by horizontal continuous casting technology (such as submerged liquid transfer multi-head continuous casting). This technology has high production efficiency, a single furnace can produce multiple copper rods at the same time, and the smoke emission is low.

Extrusion and stretching process

In order to improve the density and surface quality of the material, the copper rod after continuous casting needs to be hot extruded (such as 38MN reverse extruder). Large-tonnage extrusion equipment can cover the production of multiple grades, so that the copper rod has high density, high strength, and reduces surface damage. After extrusion, the cold stretching and straightening process are used to further improve the dimensional accuracy and straightness.

Annealing and finishing

Annealing (650-720℃) can optimize the ductility and mechanical properties of copper rods to meet different application requirements. The finishing process includes cutting, grinding and cleaning to ensure the surface finish and dimensional specifications of the finished product.

Environmental protection and automation

Modern processes use bag dust removal, wastewater recycling and other technologies to reduce pollution, while computer control is used to achieve continuous and automated production to improve efficiency and stability.

2. Product advantages

Excellent corrosion resistance

Due to the characteristics of copper-zinc alloy and surface oxide layer protection, C35330 brass rods show excellent corrosion resistance in seawater, fresh water and weak acid environments, especially anti-zincification performance, which prolongs service life.

High mechanical properties

Through extrusion and heat treatment processes, the product has high tensile strength (≥280-400 MPa), hardness and ductility, and is suitable for high-pressure and high-load scenarios (such as ship propellers and valves).

Excellent processing performance

The addition of lead (1.5-2.5%) significantly improves cutting performance and reduces tool wear, while supporting limited cold forming processing, suitable for precision parts manufacturing (such as automotive accessories, electrical connectors).

Heat resistance and stability

It can maintain mechanical properties below 300°C, and the ductility is further improved after high-temperature annealing (650-720°C), which is suitable for high-temperature parts such as heat exchangers.

Environmental protection and standardization

It complies with international standards such as ASTM and AISI, and passes REACH regulations to meet the market demand for environmentally friendly precision copper rods.

Diversified product forms

It can produce a variety of specifications such as round rods, square rods, hexagonal rods, and supports forms such as plates and pipes. The application range covers multiple fields such as machinery, aerospace, and construction.