The production process and product advantages of C12200 copper coil can be elaborated in detail from the following aspects:

1. Production process

Raw materials and deoxidation process

C12200 belongs to phosphorus deoxidized copper (Cu-DHP), using phosphorus as a deoxidizer, copper purity ≥99.9%, phosphorus content 0.015%-0.040%. Its deoxidation process avoids the problem of hydrogen embrittlement and is particularly suitable for processing under reducing atmosphere (such as welding and annealing).

Efficient rolling technology

The planetary rolling technology is adopted to eliminate the heating and extrusion processes in the traditional process, and the ingot is directly cold processed, which significantly shortens the production process and reduces energy consumption.

Combined with continuous casting technology, copper strips with large coil weight (up to 6 tons) and high precision (thickness tolerance <0.003mm) can be produced, and the single coil length is long, which is suitable for subsequent cold processing.

Microstructure control

The grain structure is regulated by the rolling process, and the ingot is formed into equiaxed grains after rolling, which improves the uniformity and forming performance of the material.

2. Product Advantages

Excellent processing performance

Outstanding ductility: Compared with Cu-ETP copper, C12200 exhibits better plasticity in cold processing and can be subjected to multiple progressive stretching without intermediate annealing.

Hydrogen embrittlement resistance: There is no risk of hydrogen embrittlement in hydrogen-containing reducing atmospheres (such as annealing or welding), and it is suitable for special processes such as steel substrate cladding.

Supports a variety of processing methods: including bending, welding, stamping, deep drawing, etc., suitable for the manufacture of complex parts.

Mechanical and physical properties

Tensile strength: The tensile strength of the drawn state (H58) is ≥290MPa, and the strength and elongation of the light drawn state (H55) are both up to standard (elongation ≥25%).

Electrical conductivity/thermal conductivity: The electrical conductivity is about 85% IACS, which is lower than Cu-ETP, but still meets the needs of air conditioning pipes, electrical connectors, etc.

Corrosion resistance: The structure is dense and uniform, and the corrosion resistance is excellent, which is suitable for drinking water projects and marine environments.

Environmental protection and compliance

Complies with RoHS standards, lead (Pb) content <0.01%, cadmium (Cd) <0.001%, meeting European and American environmental protection requirements.

Passed ASTM, ASME, JIS and other international standards certification, adapted to global industrial specifications.

Wide range of applications

Air conditioning and refrigeration: used to manufacture seamless copper tubes, heat exchangers, condensers, etc., with stable performance in the drawn state.

Electronics and electrical: suitable for high-precision copper strips, lead frames, connectors, etc., with high surface finish.

Industry and construction: covers oil coolers, ship parts, decorative materials and other fields.

III. Typical product parameters

Size range: thickness above 0.05mm, width up to 1500mm, coil weight 3-8 tons.

Surface quality: flat plate shape, bright surface, strict roughness control.

Delivery state: soft state (O60), hard state (H04) and other states can be provided to meet different processing needs