CHARACTERISTICS

The characteristics of wires produced by the vacuum continuous casting technique are:

  1. Low Gas Content/ High Purity：
    TRC uses the vacuum casting technique to strictly control the generation of oxygen content and ensure pure copper wires with high purity and low gas content. Moreover, the report of Evans Analytical Group® (EAG) proves that the wires TRC produced with minimum content of oxygen but it only can show the concentration is lower than 1ppm because of the limitation of SIMS analytical method. Adopting the method of vacuum distillation makes the elements with low melting points be evaporated through vacuum extraction; meanwhile, it reduces the content of oxygen and hydrogen. Therefore, it can be guaranteed that the wires are high-purity and low-impurity materials.
  2. Large (Long) Crystal/Unidirectional Solidification：
    The crystal structure and direction can be determined by controlling the drawing parameters. For that reason, unidirectional solidification metal wires are not easily broken during the further process.
  3. Homogenization：
    Using high frequency induction furnace makes alloys be well-homogenized because of electromagnetic stirring.
  4. High Tensile Strength/High Conductivity：
    The characteristics of alloys are high tensile strength, high conductivity, high fatigue resistance, good heat removal and so on depending on the percentage of added elements.

Vacuum Extraction：According to Sievert’s law, vacuum extraction is the most efficient method to deoxidize.

Sievert’s law
[ H%]=KH．(PH)1/2(atm)
[ H%]：gas concentration in molten metal.
PH：partial gas pressure in surrounding atmosphere.

Vacuum Distillation：The lower melting point elements will be vaporized in the vacuum casting process to increase product impurity.

Crystal Structure：Generating crystal structure is achievable through controlling drawing parameters. (Wire Size:8mm, Visual Inspection)

Homogenization：

Electromagnetic stirring created by high frequency induction furnace.

Comparison of various materials.

Characteristics of copper-silver alloys：

1.Relationship Between Tensile Strength and Composition.
2.Relationship Between Conductivity and Composition.
3.Relationship Between Conductivity and Tensile Strength.

Characteristics of Copper-Tin Alloys：

1.Relationship Between Tensile Strength and Composition.
2.Relationship Between Conductivity and Composition.
3.Relationship Between Tensile Strength and Conductivity.

Characteristics of Unidirectional Solidification(Long Crystal) Oxygen Free Copper Wires and Pure Silver Wires：

Sound Generation

Sound Transmission

Influence of Oxygen Content and Impurities

Effect of Crystal Boundary

Unidirectional Solidification