Production process and product advantages of C22000 copper rod:

1. Production process

Raw material processing and smelting

The raw materials are mainly scrap brass, electrolytic copper, zinc ingots, etc., which are melted at about 1100℃ in electric furnaces or industrial frequency furnaces. Some processes add slag removers to remove impurities.

Advanced enterprises such as Jintian Copper Industry adopt the "large-tonnage electric furnace smelting-submerged liquid transfer-multi-head multi-stream horizontal continuous casting" technology to directly use scrap copper, with high production efficiency (single furnace can continuously cast 64 products of different specifications), and equipped with dust removal system to reduce pollution.

Forming and processing

The molten copper liquid is formed into rods through continuous casting or traction machine. Some processes are combined with hot extrusion (such as 38MN reverse extruder) to improve density and surface quality.

Subsequent processes include polishing, straightening, cutting, etc. Some enterprises use pickling and annealing (600-700℃) to optimize material properties.

Process innovation

The industry trend is continuous and automated production, with extrusion as the mainstream, supplemented by computer control and non-destructive testing technology to ensure product consistency and quality.

Short-process environmentally friendly processes (such as Hailiang Co., Ltd.'s technical transformation project) reduce costs through natural gas/electric heating and frequency conversion energy-saving technology, while improving product precision and strength.

2. Product advantages

Excellent mechanical properties

Tensile strength ≥ 275MPa, elongation ≥ 45%, can be further improved by heat treatment (annealing or strengthening treatment), suitable for high-load structural parts.

Strong corrosion resistance

It has good corrosion resistance in the atmosphere, fresh water and seawater, suitable for harsh environments such as ships and chemicals.

Good processing performance

Excellent hot plasticity, excellent cutting, welding and bending performance, and supports complex parts processing.

High surface smoothness (extruded bars), can be directly used in precision machinery and electronic components.

Environmental protection and cost advantages

The waste copper recycling process is adopted, which meets environmental protection requirements, with less metal loss and low cost.

Some companies further reduce energy consumption through energy-saving technologies (such as variable frequency motors) and automated production.

Diversified applications

Widely used in aerospace, power, shipbuilding, machinery manufacturing, water supply and drainage pipes, and artworks.

Customizable specifications (diameter 3-200mm, length 2-6 meters) and surface treatment (polishing, coating, etc.) to meet different needs.