TPT July 2011

C utting , S awing & S aw B lades Advantages of Kanefusa saw blade for flying cut off machine

High precision laser cutting MAZAK 3DFabri Gear, fromYamazaki Mazak Optonics, is a 3D laser cutting machine for large tube and profile processing. It allows non-stop cutting of different shapes with a single machine set-up, using a universal focal torch (7.5" and 5") to obtain the right angle inclination in every point. This ensures a perfect match between cut parts having different shapes, and realises a proper chamfering for welding operation. This technical feature allows efficient processing on structural parts for carpentry construction. The machine is equipped with four chucks to process long finished parts, automatic and compact centring clamps to minimise material scrap, and both side longitudinal movement. The automatic loading/unloading system is able to process tubes and profiles with maximum length up to 15m, maximum tube diameter 323mm, and profiles with a maximum section of 250x250mm. Yamazaki Mazak Optonics – Belgium Fax: +32 2 7253320 Website: www.mazak.eu

FLYING cut off machines for tube mills often aim to cut off welded tube (ERW) with cutting speed of around 200-300m/min. These days, some users operate machines with over 400m/min cutting speed for volume manufacturing. The faster cutting speed, unstable material holding and coolant inside the tube invariably make the cutting conditions very tough for sawblades. Kanefusa has developed a newly designed saw blade for flying cut off machines and has a growing reputation for its quality across the globe. It is used most often for flying cut off machines but the company has two types of saw blades: one for high speed cutting Vc=350-600m/min and the other for high tooth load cutting Sz=0.1-0.2mm/tooth. For the high-speed cutting condition, wear-resistance is a key point. Kanefusa’s original coating gives sawblades an intensive effect against edge wear. The coated blade performs better for over 300m/min cutting speed. The blade teeth are also heat-crack resistant. In

sawing tube on ERW, the high temperature cutting edge is squirted with coolant directly. As the edge is repeatedly heated and cooled, it expands and shrinks, thereby increasing the chance of heat cracking. As these fine cracks pose a high risk of causing bigger edge chippings, the edge should be strong against heat cracking. All Kanefusa blades for this application are made with a specially selected highly heat crack resistant carbide. Lastly, for high tooth load sawing, a well-designed tooth configuration and high quality carbide are used to avoid edge chipping caused by high load. Together with the above advantages, the company will study each sawing condition for the customer and design the sawblade that will offer the best performance from its products.

Kanefusa Corporation – Japan Email: t-isogaya@kanefusa.co.jp Website: www.kanefusa.net

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