Metal band saw blades

Röntgen bi-metal band saw blades

Outstanding premium quality for high cutting performance with bi-metal band saw blades in steel construction and steel trade for profile and flat steel processing.
Our partner supplier, Robert Röntgen GmbH & Co KG from Remscheid, offers a large and high-quality product selection of metal band saw blades.

Röntgen bi-alfa cobalt M42

The Röntgen bi-alfa cobalt M42 hacksaw blade has a highly flexible backing strip made of high-alloy heat-treated steel. This guarantees excellent bending fatigue strength. The tooth tips made of HSS-M42 and the high cobalt content guarantee very good wear resistance and therefore ensure low tool costs. The saw blades are also available with carbide tipping in the HM-Titan or HM-Titan forteC versions, which are ideal for machining tough materials.

Advantages of Röntgen bi-metal band saw blades:

• For all steel qualities up to 1400 N/mm² and non-ferrous metals
• High cutting performance
• Very long service life
• Favorable price-performance ratio
• Narrow cutting channel / less scrap waste
• Precise and straight cut

The Röntgen BI-ALFA band saw blade is particularly suitable for use on mitre band saws from the machine tool manufacturers Behringer, Kaltenbach, Meba, Kasto, Peddinghaus, Ficep and Voortman.

In addition to the application (material and profile of the workpiece), the choice of the optimum band saw blade depends on the design of the band saw construction of the individual manufacturers. The length, width and thickness of a band saw blade depend on the manufacturer's specifications.

Band saw blade tooth pitch

The meshing length of the band saw blade in the workpiece is relevant for the choice of tooth pitch (ZpZ). The tooth pitch is determined by the number of teeth (tooth cutting edges) per inch (= 25.4 mm).

A distinction is made between standard toothing and combi toothing.

With standard toothing, the tooth spacing is always the same. This toothing is well suited for sawing constant material cross-sections.

With Combi toothing, which is mainly used in steel construction and the steel trade, the first number corresponds to the largest tooth tip distance and the second number to the smallest tooth tip distance within a tooth group. Combi toothing increases the application range of the band saw blade and reduces vibrations that occur when sawing sectional steel and pipes.

The following tooth pitches are recommended here:

For pipes and steel profiles up to approx. 300 mm material width 3/4 tooth pitch with a step set, for material widths above 300 mm 2/3 tooth pitch with step set and for profile beams with a high residual stress, a tooth pitch of 3/4 should be selected in conjunction with an extra wide step set.

Saw blade tooth shape

The shape of the saw teeth must be selected so that they meet the special requirements for sawing pipes, profiles and profile beams. With interrupted saw cuts, the loads on a saw blade are higher than when sawing solid material.

Changing the saw blade and running in a new saw blade:

When changing the saw blade, in addition to selecting a suitable new saw blade, make sure that the condition of the saw blade guide and the proper functioning of the chip clearing brush are checked. The fill level for the appropriate cooling lubricant and the function of the coolant supply must also be checked.

In order to achieve the longest possible service life of a bi-metal band saw blade and to prevent the finest chipping on the saw teeth, running-in or sawing-in is an important measure. If the running-in process is carried out optimally, the tooth tips are ideally rounded and without chipping.

When running in the new band saw blade, the machine operator must operate the band saw for a period of approx. 15 to 20 minutes at a cutting speed (Vc) reduced by approx. 30% and a feed rate (Vf) reduced by approx. 50%. After this running-in process, the cutting speed is first slowly increased and then the feed speed is increased to the previously determined full sawing capacity.