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Enormous performance increases!

All-round coatings usually have the disadvantage of not being able to achieve exceptional performance. This is not the case with FIREX! FIREX combines the advantages of TiN, TiAlN and TiCN, therefore replacing these conventional coatings in the long-term. FIRE also surpasses even the exceptional performance of TiAlN and TiCN in their range of special applications.
The reason for the enormous performance potential of FIREX are its following characteristics:
Fig. 3
Fig. 3: FIREX structure with graditional structure
Fig. 4 Fig. 4: Tool life comparison for carbide ball nosed milling cutter. Dry milling, interrupted cutting. Workpiece material: Alloyed steel. Tool-Ø = 18.8 mm, n = 4200 m/min, vf = 1450 mm/min.
Fig. 5

Fig. 5: Tool life comparison between HSS and carbide drills with different coatings. Workpiece material: alloyed steel.
HSS: Ø = 8 mm, vc = 25 m/min, f = 0,14 mm/U, ap = 30 mm, Through hole
Carbide: Ø = 8.5 mm, vc = 110 m/min, f = 0,17 mm/U, ap = 26 mm, Blind hole
Fig. 6

Fig. 6: Tool life comparison between HSS drills with different coatings.
Workpiece material: Stainless steel. Tool-Ø = 6.0 mm, vc = 35 m/min, f = 0,12 mm/U, ap = 15 mm.
  • Optimal adhesion of the base coating. In order to achieve the best possible adhesion, the production of FIREX always begins with a TiN-layer, thereby utilising the good characteristics of TiN. The more abrasive the material to be machined, the quicker a coating without good adhesion fails.
  • Cushioning effect of multi-layer coatings. In fig. 3, we can see a homogenous gradiational layer between the base coating TiN and the top coating TiAlN. However, if we examine this area more closely, we will discover a very fine multi-layer structure which acts as a very soft cushion on the solid foundation of the TiN-base-coat, swallowing any possible fissures and giving FIREX virtual immunity against shock or vibration occuring especially during interrupted cutting (fig. 4).
  • Increased heat-resistance and hardness is achieved with TiAlN as a top-coating, ensuring excellent wear characteristics and therefore outstanding tool life and this not only with conventional machining. Our FIRE-coated tools are also suitable for high speed and dry machining. In short, the performance increases are enormous:
    1. For conventional machining, you can expect twice the performance compared to TiN-coated, this applies to HSS as well as carbide tools and for machining tasks in heat-treated and high-alloyed steels (figures 5 and 6).
    2. For HSC machining we achieve four times the performance (fig. 7) compared to conventional machining thanks to the interaction between our ultra fine grade carbide plus FIRE plus internal coolant with oil (80 bar).
    3. Dry drilling of cast iron is at the peak of technology. Twice the tool life is achieved here compared to conventional machining (fig. 8).
    4. Even with the very difficult-to-machine vermicular light cast iron, F-tools achieve outstanding results (fig. 9).
    5. With internal minimal lubrication technique, up-to-date tool materials, optimised tool geometries and double coating FIRE plus MOVIC (see below), even deep holes (20 × D) can be achieved. Compared to conventional machining increased cutting rates are not only possible but essential (fig. 10). Only then are the chips quickly catapulted out of the hole, leaving no time for heat transfer to the workpiece and tool.
  • Low friction. ARC-coatings generally produce a rough top-coat surface which can lead to chip congestion especially when drilling deep holes. This does not apply to FIRE (fig. 11). As mentioned above, we have optimized the ARC process accordingly. ARC at Guhring is not the same as ARC!
Fig. 7

Fig. 7: Productivity comparison between twist drills in
different tool materials. Workpiece material: 38MnVS35.
Tool-Ø = 12.6 mm, drilling depth ap = 13,5 mm. basis of comparison Lf = 24 m.
Fig. 8

Fig. 8: Tool life comparison between carbide drills with different coatings.
Workpiece material: Cast iron GG25. Tool-Ø = 11.8 mm. vc = 110 m/min,
f = 0.4 mm/U, ap = 3 × D. Blind holes. VBmax = 0,8 mm.


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