Circular saw blade and method for making the same

B - Operations – Transporting – 27 – B

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327/6, 143/76

B27B 33/08 (2006.01) B23D 61/02 (2006.01) B23D 65/00 (2006.01) B23K 15/04 (2006.01)

Patent

CA 1069027

Abstract of the Disclosure Circular saw blade consisting of different materials, and is characterized in that it is composed of three concentric zones which are joined with each other by welding. The method of making the circular saw blade is characterized in that the material for an outer zone is composed of straight bands, which are joined with the material for a zone lying inside the former, which material is also composed of straight bands, by elect on beam welding, whereafter the welded bands are bent to circular form and then joined with a circular-formed material for an inner zone by some other welding method than electron beam welding.

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