Method for producing a primary material for a cutting tool

1. A method for producing a primary material for a cutting tool, or a primary material for a saw blade or a saw band, comprising:

bringing together continuously a band-shaped carrier of a metal carrier material and an edge wire of a high-speed steel along a lateral edge of the band-shaped carrier;

transporting the brought together band-shaped carrier and the edge wire into a welding device, said welding device comprising at least a first laser welding device and a second laser welding device;

welding the band-shaped carrier to the edge wire along the lateral edge of the carrier to produce a bimetal band;

detecting angular distortion and weld seam elevation of the welded band-shaped carrier and the edge wire; and

setting a power of the first and second laser welding devices using closed-loop control based upon the detected angular distortion and weld seam elevation to minimize the angular distortion and the weld seam elevation,

wherein the band-shaped carrier and the edge wire are welded to one another by at least said first laser welding device arranged on one side of the band-shaped carrier, and at least said second laser welding device arranged on the opposite side of the band-shaped carrier, said first laser welding device and said second laser welding device being offset with respect to one another in a transporting direction of the band-shaped carrier.

2. The method as claimed in claim 1 , wherein a weld seam created between the carrier and the edge wire is not machined before a dressing of the bimetal band.

3. A saw blade or saw band, wherein the saw blade or saw band comprises a primary material produced by a method as claimed in claim 1 .

4. The saw blade or saw band as claimed in claim 3 ,

wherein the carrier material has the following composition (figures given in % by weight):

carbon (C)

0.2 to 1.5

silicon (Si)

 up to 2.0

manganese (Mn)

 up to 2.0

chromium (Cr)

 up to 7.0

molybdenum (Mo)

 up to 3.0

nickel (Ni)

 up to 1.5

vanadium (V)

 up to 0.6

tungsten (W)

 up to 5.0

iron (Fe) and smelting-induced accompanying elements and impurities as the remainder.

5. The saw blade or saw band as claimed in claim 3 ,

wherein the high-speed steel has the following composition (figures given in % by weight):

carbon (C)

0.5 to 2.5

silicon (Si)

 up to 1.5

manganese (Mn)

 up to 0.8

chromium (Cr)

  2 to 6.0

molybdenum (Mo)

 up to 11.0

vanadium (V)

 up to 10.0

tungsten (W)

 up to 20.0

cobalt (Co)

 up to 15.0

iron (Fe) and smelting-induced accompanying elements and impurities as the remainder, and

wherein the proportion of the elements Si+V+Mo+W/2 being >5% by weight.