Vacuum Brazing Diamond Wire Saw Beads: The Ultimate Technology for Stone Cutting

What Are Diamond Wire Saw Beads?

The diamond wire saw bead, also called diamond bead or diamond wire bead, is the core cutting component of a diamond wire saw. It is designed as a hollow cylindrical structure made from alloy powder and diamond. Multiple beads are strung along a steel rope and separated by rings and spacer sleeves to form the complete cutting tool, which performs the actual grinding and cutting of stones, concrete, and other materials. The specifications of the beads, including diameter, quantity per meter, and material formula, are carefully optimized to match different cutting applications, ensuring precise performance and durability.

Why Vacuum Brazing is the Best Method

Among the four mainstream manufacturing methods: electroplating, sintering, infiltration, and vacuum brazing; vacuum brazing is the most advanced and reliable technology. Vacuum brazing creates a strong metallurgical bond between diamonds and the alloy matrix under high temperature and controlled vacuum, preventing diamond detachment, enhancing durability, and ensuring consistent cutting performance. Vacuum brazed diamond wire saw beads are known as the “never falling off” type, capable of maintaining sharpness for a long time and achieving a diamond utilization rate of more than 50%, compared to just 5–10% in traditional beads. They also deliver cutting efficiency 2–3 times higher than sintered beads while reducing power consumption. In comparison, electroplating offers low diamond retention, sintering provides weaker bonding and lower efficiency, and infiltration, although stronger, cannot match the precision, durability, and performance of vacuum brazing. Vacuum brazed diamond wire saw beads are suitable for cutting soft stones such as marble and medium-hard granite, where their superior sharpness and stability can be fully leveraged.

Normantherm VF Series Vacuum Furnaces: Reliable Solutions for Diamond Saw Beads

With over 15 years of expertise in vacuum furnace manufacturing, Normantherm provides advanced solutions for the tools and dies industries through its VF Series metallic chamber vacuum furnaces. These furnaces: VF 1300-422 (400×200×200 mm), VF 1300-644 (600×400×400 mm), VF 1300-966 (900×600×600 mm), and VF 1300-1288 (1200×800×800 mm) achieve an ultimate temperature of 1300 °C and temperature uniformity of ±5 °C, with precise vacuum control to ensure consistent brazing quality. Built with molybdenum heating elements, multi-layer insulation, and PID intelligent temperature control, they provide uniform heat distribution, energy efficiency, and long service life. By using Normantherm’s VF Series, manufacturers in the tools and dies industries can produce vacuum brazed diamond wire saw beads with superior sharpness, durability, and cutting consistency, enabling faster, more precise, and cost-effective production of high-performance tooling components.

Editor: Sahera Khatun
Copyright: Normantherm Vacuum Brazing Furnace