Saw blade for high speed electric arc saw

Details Saw blade for high speed electric arc saw Saw blade for high speed electric arc saw

1981-06-22

1983-08-30

Shaw, C. C.

Electric heating

Metal heating

Cutting or disintegrating

219 68, 219 69E, B23P 112

Patent

active

044018754

ABSTRACT:
An electric arc saw and a method for operating the saw for cutting metallic objects by melting a narrow kerf into the object are disclosed. The method provides for determining the minimum cutting current. The blade is advanced through the object at a speed which is continuously monitored and varied as required to maintain the current flow between the blade and the object substantially constant. The saw blade is a thin disc formed from electrically conductive material and having a plurality of gullets disposed radially about its periphery. At least some of the gullets extend into a slit which has a much narrower width than the gullet. The gullets act to circulate water and remove cutting debris while the blade rotates. Both the gullets and the slits prevent deformation of the blade due to heating.

REFERENCES:
patent: Re20035 (1936-07-01), Strobel
patent: 212813 (1977-12-01), Miller
patent: 464855 (1891-12-01), Clark
patent: 3338808 (1967-08-01), Johnson
patent: 3663787 (1972-06-01), Haswell et al.
patent: 3730038 (1973-05-01), Farb
patent: 3872763 (1975-03-01), Kayahara
patent: 4046984 (1977-09-01), Vial

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