Views: 0 Author: Site Editor Publish Time: 2025-03-24 Origin: Site
Are real diamonds used in tools? Yes — but not always the kind found in jewelry. Diamond tools use both natural industrial diamonds, but more commonly synthetic diamonds. In fact, over 99% of all diamonds used in industrial applications are synthetic, according to statistics from the U.S. Geological Survey (USGS). These diamonds are chemically identical to natural diamonds, with superior uniformity and availability.
In diamond saw blades, diamonds are embedded in metal-bonded segments mounted on a steel core. Unlike diamond wire saws, which use flexible wires, circular blades rely on rigid steel plates for high-speed, stable rotation.
Each blade consists of two critical components:
• A core, typically made of high-tensile steel
• Diamond segments, sintered from a mix of diamond crystals and metal powder
These segments act as the “teeth” of the blade and determine the cutting speed, wear rate, and life span. At SENMINE, a professional manufacturer of industrial diamond tools, we design and produce a wide range of diamond blades for materials like granite, concrete, ceramics, and reinforced metal composites—each optimized with specific synthetic diamond formulations.
| Property | Natural (Industrial) Diamond | Synthetic Diamond |
|---|---|---|
| Source | Mined from earth | Lab-grown (HPHT or CVD) |
| Typical Use in Tools | <1% of market | >99% of market (USGS, 2023) |
| Purity | Variable | Highly controlled |
| Hardness (Mohs Scale) | 10 | 10 |
| Cost | High | 50–70% lower (per carat) |
| Shape Control | Irregular | Engineered (blocky, angular) |
| Thermal Stability | Moderate | Enhanced (especially HPHT types) |
• Uniform Particle Size: Enables precise control of tool wear and performance
• Engineering Flexibility: Shapes, coatings, and grades can be customized
• Higher Yield in Sintering: Consistent bonding in metal matrices
• Global Availability: Removes supply chain risks associated with mining
In SENMINE's production, we exclusively use high-grade synthetic diamonds sourced from verified suppliers, with tight control over size (typically 30–60 mesh for cutting), shape (blocky vs angular), and thermal coating (e.g., Ti-coated for metal bond sintering).
One of the most common uses of synthetic diamonds is in resin bond systems. Related read: Complete Diamond Bond Guide
A diamond segment is a composite made from:
• Synthetic diamond grit (abrasive cutting media)
• Metal powders (cobalt, copper, bronze, iron alloys)
• Optional additives for improved bonding, e.g. nickel or graphite
These are pressed in molds under pressures of 150–300 MPa and sintered at 700°C to 900°C, forming a dense matrix that locks in the diamonds while allowing gradual wear to expose new edges.
Example: SENMINE's granite-cutting blade segment contains:
• 35% synthetic diamond grit (40/45 mesh)
• 60% bronze/copper alloy powder
• 5% graphite lubricant for smoother cutting
The steel core is often overlooked, but it plays a critical role in:
• Heat dissipation
• Cutting stability at high RPM (up to 6,000 rpm)
• Resisting blade warping and cracking
SENMINE uses laser-cut, heat-treated carbon steel plates with <0.01 mm flatness deviation. This ensures the blade runs true and minimizes lateral vibration—critical for precision cuts in tile or engineered stone.
• Natural diamonds are rarely used due to cost, irregularity, and sourcing challenges.
• Synthetic diamonds dominate industrial cutting thanks to precision, availability, and consistency.
• The segment composition — especially diamond quality and bond matrix — directly affects cutting performance.
• At SENMINE, we engineer every blade with optimized materials and processes for specific industries.
