Production process and product advantages of C18200 copper tube:

1. Production process

Melting and continuous casting process

Use industrial frequency furnace to melt cathode copper and phosphor copper alloy (1200℃), and form copper tube blanks through horizontal continuous casting technology.

Use coreless industrial frequency furnace to realize industrial production of C18200 ingots to ensure uniform distribution of chromium elements.

Rolling and stretching

Planetary rolling process (such as planetary ball mold spinning) is used to produce smooth copper tubes and internally threaded copper tubes, significantly improving dimensional accuracy and surface finish.

Use long-stroke tube mills and high-speed series joint drawing machines to reduce eccentricity and optimize the quality of internal and external surfaces.

Heat treatment and annealing

Matching net chain bright annealing process to ensure that there is no oxidation spot on the surface of the copper tube and the mechanical properties are stable.

The strength, hardness and conductivity of the alloy (up to 80% IACS) are improved through quenching and aging treatment (aging hardening at 425-500℃).

Testing and straightening

Use direct reading spectrometer, electronic tensile machine and other high-precision equipment to detect composition and performance to ensure data accuracy.

High-precision straightening machine ensures the straightness of copper tube and avoids straightening marks.

2. Product advantages

Excellent electrical and thermal conductivity

Electrical conductivity ≥ 80% IACS, thermal conductivity 115-320 W/(m·K), suitable for high-temperature conductive environment (such as welding machine electrodes, switch contacts).

High mechanical properties

Tensile strength of 460 MPa at room temperature, high temperature (above 200℃) strength is twice that of ordinary copper, softening temperature ≥ 500℃, suitable for long-term high temperature use.

High hardness (HRB 70-80) and wear resistance extend component life.

Good processing and formability

Excellent hot and cold processing performance, can be extruded, rolled, forged (820-930℃ hot processing) and cold drawing, bending and other forming processes.

Good welding performance, supports gas shielded welding and electron beam welding, low electrode loss, high welding efficiency.

Corrosion and oxidation resistance

Strong corrosion resistance in the atmosphere, fresh water and high temperature environment, suitable for outdoor equipment and chemical industry.

Excellent high temperature oxidation resistance, can withstand repeated thermal cycles.

Wide application areas

Resistance welding electrodes, high-voltage switch contacts, molds (injection mold cores, crystallizers), radiators, power transmission components, etc.

In the automotive, aerospace, electronic and electrical industries, it balances safety, economy and performance requirements.