TPT January 2011

TECHNOLOGY NEWS - Cutting and Sawing - Flying shear cutoff installation at global tube producer

THERMATOOL has announced the shipment of another high speed Alpha flying shear cutoff to a major conduit and mechanical tube producer in Brazil.The Alpha shear will double cut, dimple free, steel tubing 25 to 125mm in diameter, in 3m lengths, at 150 MPM. The Alpha high performance flying shear is described by the company as the fastest and most reliable tube cutting system in the world. Thermatool Alpha cutoffs will cut tubes and profiles at speeds from 15 to 305 MPM, distortion free, in-line and in diameters from 9 to 168.3mm ( 3 / 8 " to 6 5 / 8 "), and wall thicknesses from 0.8 to 6.4mm (0.03" to 0.25"). Летучие ножницы для резки труб Компания Thermatool Corp объявила о поставке еще одних летучих ножниц Alpha для крупного бразильского производителя механических труб и труб для канализации электропроводки. Ножницы Alpha двойного реза без образования ямок могут резать трубы диаметром от 25 до 125 мм и длиной 3 м со скоростью 150 м/мин. Компания утверждает, что эти ножницы самые быстрые и надежные в мире ножницы для резки труб. Ножницы Alpha режут в технологической линии трубы диаметром от 9 до 168,3 мм с толщиной стенки от 0,8 до 6,4 мм и профили со скоростью от 15 до 305 м/мин без их деформирования 在全球管道生 产商 安装的 飞剪 切割装置 THERMATOOL 宣布已装运了另外一个高速 Alpha 飞剪切割装置，运往巴西的一家主要导管和机械管道生产商。 该 Alpha 剪将提供双倍切割，无凹痕，能切割直径 25 到 125 毫米的钢管，切割长度为 3 米，速度为 150 米每分。该 Alpha 高性能飞剪被该公司描述为全世界最快可靠的管切割系统。 Thermatool Alpha 切割装置将以 15 到 305 米每分的速度，无变形、在线切割直径为 9 到 168.3 毫米，壁厚 0.8 到 6.4 毫米（ 0.03" 到 0.25" ）的钢管和型材。

Thermatool Corp – USA Fax: +1 203 468 4281 Email: info@ttool.com Thermatool IHWT – UK Fax: +44 1256 467 224 Email: info@ihwtech.co.uk Website: www.inductotherm-hwt.co.uk

------------------------------------------------------------------- Laser cutting with the right beam source

CO2 or solid-state laser? Many users ask this question when they consider doing cutting work with the laser. "The application decides which beam source is best to use," explained Dr Arnd Szelagowski of TRUMPF Laser- und Systemtechnik, Ditzingen/Germany. He recently spoke at the congress of the German Welding Society (DVS) in Nuremberg/Germany. In his presentation "Laser beam cutting today and tomorrow – current developments and trends in laser cutting technology," Dr Szelagowski said depending on material and sheet thickness, the CO2 laser is a better choice for one application, while the solid-state laser a better choice for another." If users want a flexible way to cut across all sheet thicknesses and obtain very good cutting quality, the CO2 laser is the beam source of choice – despite its lower efficiency compared to the solid-state laser. If the user's focus is on thin sheet cutting, the solid-state laser has real advantages. Mr Szelagowski explained the reason for this by describing the absorption ranges of both laser beam technologies for iron. With a wavelength of 1µm, the solid-state laser produces a very broad, almost constant absorption level across an angle of incidence varying from 0 to 60 degrees. In the range of about 78 degrees, a distinct level with a subsequently steep drop is noticeable. With a wavelength of 10µm, on the other hand, the CO2 laser shows a significant increase in the absorption level with an increasingly steeper angle of incidence (greater than 80 degrees), and thereby an improved coupling of the laser output into the material. These effects directly impact the laser beam fusion cutting – but not the flame cutting. "In this case, the laser plays only a subordinate role. That is why the cutting quality and speed in flame cutting for mild steel do not vary between CO2 and solid-state lasers," he added.