Method and mechanism for increasing critical speed in...

B - Operations – Transporting – 27 – G

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B27G 19/02 (2006.01) B27B 33/08 (2006.01) C22C 14/00 (2006.01) C22C 19/00 (2006.01)

Patent

CA 2566046

There is provided a method for increasing the critical speed of a rotating disk and disk using same. The method comprises the steps of providing a disk and fastening at least one heat sensitive insert to the disk. The insert exerts a tensile stress on the disk when an insert temperature exceeds a redetermined temperature. The disk could be a saw blade. Also, there is provided a saw blade and method having a reduced kerf at high speeds, the blade having a serrated cutting edge. The blade comprises at least one insert attached to the blade, the at least one insert exerting a tensile stress on the blade when an insert temperature reaches a predetermined temperature, the exerted tensile stresses opposite to those induced by the blade temperature.

L'invention concerne un procédé pour augmenter la vitesse critique de rotation d'un disque et un disque utilisant ce procédé. Le procédé comprend les stades qui consistent à fournir un disque rotatif et à fixer au moins un insert thermosensible dans ledit disque. L'insert exerce une contrainte de traction sur le disque lorsqu'une température de l'insert dépasse une température prédéterminée. Le disque peut aussi se présenter comme une lame de scie. L'invention concerne aussi une lame de scie et un procédé pour réduire le trait de scie à des vitesses élevées, la lame possédant un angle de coupe serré. La lame comprend au moins un insert fixé à la lame, ledit au moins un insert exerçant une contrainte de traction sur la lame lorsqu'une température de l'insert atteint un niveau prédéterminé, les contraintes de traction exercée étant opposées à celles provoquées par la température de la lame.

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