Patent ID: 8234961

Claim:
Saw band of steel and being for a band saw machine with a band back (Br) and with a tooth row, the band back and tooth row lying in a plane, the saw band comprising: a plurality of teeth ( 20 ) formed in a series and forming the tooth row on said band back, the teeth being formed of the same material as the band back; each of said teeth ( 20 ) having a tooth form ( 10 ) that is triangular with a tooth base with a tooth width (b) and with a tooth tip ( 1 ) with a first tooth height (h 1 ), such that the tooth tip ( 1 ) does not project beyond the tooth width (b) in a band running direction (L); wherein a lateral side of the triangular tooth form ( 10 ) located in front in the running direction (L) forms a rake face ( 2 ) and a rear lateral side of the triangular tooth form forms a clearance face ( 3 ) of each tooth; wherein material from the tooth tip ( 1 ) of the triangular tooth form ( 10 ) is removed such that the tooth tip is rounded off in the running direction (L) and in the plane of the band back and tooth row and is developed as a rounded-off tooth crest ( 4 ) that is rounded off both at the rake face ( 2 ) and at the clearance face ( 3 ); the rounded-off tooth crest ( 4 ) having a reduced second tooth height (h 2 ) which is spaced apart from the base of the triangular tooth form ( 10 ) with tooth width (b); and at least in the proximity of the tooth crest ( 4 ) there is a hard material coating covering at least partially a cutting face formed of the tooth crest ( 4 ), the rake face ( 2 ) and the clearance face ( 3 ); the rake face ( 2 ) being inclined with respect to the perpendicular to the base and to the band back (Br) by a rake angle (y) that is in the range from 0° to 7°; the clearance face ( 3 ) being inclined with respect to the perpendicular to the rake face ( 2 ) by a clearance angle (α) that is in the range from 4° to 10°; a material removal height (X) from the tooth tip ( 1 ) of the triangular tooth form ( 10 ) to the tooth crest ( 4 ) measured along the rake face ( 2 ) of the triangular tooth form ( 10 ), being in the range from 0.02 to 0.30 mm at an initial tooth height (h 1 ) of the tip ( 1 ) of the triangle of 1.00 to 10.00 mm and at a tooth width (b) at the base of the triangle of 1.00 to 10.00 mm; and the rounded-off tooth crest ( 4 ) in the uppermost region with the tooth height (h 2 ) including a first cutting edge radius (R 1 ) which is in the range from 0.03 to 0.15 mm.