What Are the Application Advantages of Cleaned Tungsten Wire in Diamond Wire for the Photovoltaic Industry?

Cleaned tungsten wire offers significant advantages in photovoltaic diamond wire (used for silicon wafer cutting), gradually replacing traditional high-carbon steel wire and becoming the preferred material for high-efficiency wafer cutting:

  • Ultra-High Strength: The tensile strength of cleaned tungsten wire far exceeds that of high-carbon steel wire (over 4000 MPa), enabling it to withstand high tension, ensuring stability when cutting large-sized and ultra-thin silicon wafers, and reducing the risk of wire breakage.
  • Extremely Fine Diameter: Cleaned tungsten wire can be drawn to ultra-fine diameters (mass production at 26–35 μm, with R&D targeting even lower), significantly reducing cutting loss, increasing wafer yield, and lowering photovoltaic cell production costs.
  • Excellent Wear Resistance: With high hardness (Mohs hardness ~7.5), combined with electroplated or sintered diamond particles, it delivers superior cutting performance and strong wear resistance, extending the service life of diamond wire.
  • Chemical Stability: Cleaned tungsten wire exhibits excellent corrosion resistance when in contact with coolant and silicon debris during cutting, maintaining stable performance.
  • Thermal Stability: Localized high temperatures generated during cutting do not affect the mechanical properties of cleaned tungsten wire, ensuring high-precision cutting.
  • Economic Benefits: With ongoing optimization of production processes, the cost of cleaned tungsten wire diamond wire continues to decrease, offering a cost-performance ratio that is approaching or surpassing that of steel wire, with rapidly increasing market penetration.

These advantages make cleaned tungsten wire diamond wire a key material driving the photovoltaic industry toward high-efficiency, ultra-thin wafer production.

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