Production process and product advantages of C27400 copper tube:

Production process

1. Melting and continuous casting:

The raw materials are cathode copper and phosphor copper alloy, which are melted at a high temperature of 1200℃ in an industrial frequency furnace, and then cooled and formed by a horizontal continuous casting process. The cooled copper tube is water-cooled to 50℃ to form a preliminary tube blank.

2. Rolling and stretching:

The tube blank is milled to remove the surface oxide layer, and then plastic processing is performed by planetary rolling and triple drawing, disc drawing and other processes to improve dimensional accuracy and surface finish.

It is mentioned that the use of long-stroke tube rolling mills and independently developed high-speed stretching machines can further reduce eccentricity and improve product consistency.

3. Annealing and surface treatment:

Online annealing (temperature 600-700℃) is required during the processing process to eliminate internal stress and ensure the ductility of the material. The finished product also needs to undergo surface cleaning, rewinding flaw detection and other processes to ensure that there are no oxidation spots and defects.

Precision processing technology:

Use high-precision straightening machines to ensure straightness, and cooperate with Swiss imported spectrometers and other equipment for quality inspection to ensure that mechanical properties and dimensions meet the standards. Some companies have also introduced energy automatic metering and frequency conversion power regulation technology to reduce energy consumption.

Product advantages

Excellent mechanical properties:

Tensile strength can reach 220-370 MPa, elongation ≥15%-45%, with both high strength and good plasticity.

Excellent forgeability in hot state, suitable for complex forming processes such as stamping and forging.

Excellent processing performance:

It has excellent hot and cold processing performance, supports cutting, welding, brazing and other processes, and is especially suitable for CNC precision processing.

The surface finish is high and can be used for precision parts (such as radiators, electronic connectors) without additional polishing.

Corrosion resistance and wide application:

It has good corrosion resistance in dry air, fresh water and weak acid environments, and can adapt to marine environments after adding tin and zinc elements.

Applicable to plumbing equipment, electronic components, ship accessories, military equipment and other fields.

Cost-effective and environmentally friendly:

The price is lower than other copper alloys, and waste materials (such as copper chips and emulsion) can be recycled, reducing production costs.

Energy management technology can achieve energy-saving production.