Diamond Wheels

Segmented diamond wheels are the backbone of industrial glass edging. Each segment is a precise mixture of synthetic diamond grit and metal bond (typically cobalt, bronze, or iron-based), sintered under high pressure and temperature. The gaps between segments — called gullets — serve two critical functions: they allow coolant to reach the cutting zone and provide channels for glass swarf removal. This design prevents overheating and maintains consistent material removal rates across the wheel's life. Hanwin's segmented wheels use proprietary diamond concentrations that balance cutting speed with wheel longevity, delivering 20–40% more life than industry-standard alternatives.

Thinner-segmented wheels bridge the gap between aggressive segmented grinding and fine resin finishing. By reducing segment width to 1.5–3mm and increasing diamond concentration within each segment, these wheels produce a significantly smoother edge while still removing material at productive rates. The narrower profile also reduces the kerf — the amount of glass removed during grinding — which is critical when working with expensive coated glass or thin substrates where every fraction of a millimeter matters. Hanwin's thinner-segmented wheels use a micro-grit distribution that creates a more uniform scratch pattern, reducing the number of subsequent polishing steps needed.

Inner/outer segmented wheels are engineering marvels designed specifically for double edger machines. These wheels feature diamond-bonded segments on both their inner diameter (ID) and outer diameter (OD), allowing both edges of a glass sheet to be ground simultaneously as the glass passes through the machine. This dual-action capability effectively doubles the grinding throughput compared to single-surface alternatives. The inner and outer segments can have different diamond concentrations and grit sizes, allowing manufacturers to achieve different finish grades on each edge in a single pass. Hanwin's I/O wheels use a patented bonding process that ensures uniform diamond distribution across both surfaces, preventing the common problem of uneven wear between ID and OD segments.

Bevelling wheels transform a sharp 90° glass edge into an elegant, angled facet that catches light and adds visual depth. The beveling process typically uses 8–12 wheels in sequence, each progressively finer, to transform a rough-cut edge into a polished, mirror-like bevel. Hanwin's beveling wheel system is designed as a complete set — coarser wheels at the entry stage for rapid material removal, transitioning through medium grits for shaping, and finishing with ultra-fine wheels for the final polish. Each wheel in the set is engineered to work at a specific angle (typically 5°, 10°, 15°, 22.5°, or 45°) and is color-coded for easy identification. The bond hardness is precisely calibrated so that each wheel wears at a rate that maintains the correct bevel geometry throughout its life.

Peripheral wheels represent the precision end of diamond tooling. Unlike segmented wheels that use a flat face, peripheral wheels grind exclusively with their outer rim — the thin band of diamond-impregnated material around the circumference. This design allows the wheel to follow complex contours, create radiused edges, and produce the finest surface finishes achievable in mechanical glass processing. The peripheral contact area is typically only 2–5mm wide, concentrating all grinding force into a tiny zone for maximum control. Hanwin's peripheral wheels use electroplated or resin-bonded diamond layers that can be profiled to custom edge shapes — bullnose, ogee, half-round, or any custom profile. For final finishing, resin-bonded peripheral wheels with ultra-fine diamond grit (#1000–#3000) produce edges so smooth they appear polished without any chemical treatment.