• SURFACE TREATMENTS

Steam Oxide treatment

This is a controlled oxidation on the blade that makes a layer of iron oxide which increases the self-lubricating capacity and the antifriction of the saw blade giving the following advantages:

  • Increased ability to retain the coolant and therefore greater heat dissipation during the cutting.
  • High resistance the glue, thus reducing the possibility of seizure.
  • Reduction of friction coefficients with increasing of the performances.

Recommended blade on manual cut-off machine.

COATING FEATURES

  • Surface hardness: 900 HV
  • Friction coefficient: 0,60

PVD system

Our saw blades can be supplied bright finish or steam oxide treated or P.V.D. coated. PVD system covers high speed steel blades without altering their structural characteristics, because the coating process is made at lower temperatures than the one used during tempering. Normally the deposited layer is between 2 and 5 microns, important in this phase of coating is the thermal expansion coefficient, the thermal conductibility, the hardness, the  thermodynamic stability to elevated temperatures; because from these elements depend the final result.

COATING FEATURES

  • surface hardness increase
  • friction reduction and reduction of thermal conductibility
  • reduction of working time/machine stops
  • reduction of the formation of the edge of amount carried over
  • limitation of corrosion and oxidation phenomenons

TiN • Titanium nitride coating

This coating gives to the blade an high surface hardness and it is particularly suitable for cutting medium/low alloy steel and in conditions of cutting involving hard wearing both adhesive and abrasive type. Thanks to this kind of coating is possible to obtain various advantages and improvements in processing such as a reduction of the effect of cold welding between the tool and the workpiece material, a reduction of friction, a reduction of cutting and deformation strengths, reduction of roughness on machined parts, a better sliding of material being processed and not least an increased yield of the tool through increased feeds and greater life of the blade which may be higher 50% compared to the conventional blades.

COATING FEATURES
Colour • Yellow gold
Hardness • 2400 Vickers (HV 0,05)
Max Oxidation Temperature • 640 °C
Tenaciousness • Quite high
Resistance • High to adhesive and abrasive hardwearing
Adhesion • High to the surface of the machine tool
Thickness of the Coating • 3 micron
Steel friction coefficient • 0,50

TiCn • Titanium carbon nitride

This coating has a very low coefficient of friction and so guarantees an excellent cut finish avoiding chipping at the cutting edge working at high parameters of cutting speed and feeds. This coating is particularly suitable for cutting highly abrasive materials such as stainless steels and medium-alloy steels or aluminum alloys, copper, brass and titanium. The high surface hardness allows high cutting speeds and feeds more than 100% compared to the traditional blades.

COATING FEATURES
Colour • Grey-violet
Hardness • 3000 Vickers (HV 0,05)
Max Oxidation Temperature • 400 °C
Tenaciousness • High
Resistance • High to adhesive and abrasive hardwearing
Adhesion • High to the surface of the machine tool
Thickness of the Coating • From 2,5 to 3 micron
Steel friction coefficient • 0,25

Red Baron

This coating is a particular evolution of the TiCN coating. It is obtained by a deposit of titanium carbonitride with the addition of acetylene. This combination gives to the blade a very low coefficient of friction combined with a very high hardness of the blade which ensures high performance with an excellent cut finishing even at high cutting parameters. It is particularly suitable for cutting carbon steel, stainless steel, high alloy steels as well as for cutting titanium, copper, bronze, brass and aluminium.

COATING FEATURES
Colour • Red-orange
Hardness • 3200 Vickers (HV 0,05)
Max Oxidation Temperature • 480 °C
Tenaciousness • High
Resistance • High to adhesive and abrasive hardwearing
Adhesion • High to the surface of the machine tool
Thickness of the Coating • From 2,5 to 3 micron
Steel friction coefficient • 0,20

TiAlN • Titanium aluminium nitride

This coating is specifically used for cutting applications of high alloy steels, stainless steels, very hard steels and abrasive materials such as cast iron, alloys of silicon-aluminum, brass, copper, nickel and titanium. The low coefficient of friction allows the circular saws to be used with excellent results even in conditions of poor lubrication or misting. It is also particularly suitable for applications with high cutting speed, as it is able to protect the blades from high temperatures (above 400 °C) caused by high speed cutting or by high hardness of the material to be cut. Its low thermal conductivity makes it the best coating for high temperatures.

COATING FEATURES
Colour • Dark violet-black
Hardness • 3400 Vickers (HV 0,05)
Max Oxidation Temperature • 800 °C
Tenaciousness • Good at high temperatures
Resistance • High to adhesive and abrasive hardwearing
Adhesion • Discrete to the surface of the machine tool
Thickness of the Coating • 3 micron
Steel friction coefficient • 0,45

S-TiAlN

This PVD coating is a new concept that represents an evolution of the classic TiAlN. The coating is grey coloured and the coating thickness is 2,5 microns which gives the circular blade a hardness of 3600 Vickers (HV 0,05). This coating compared to TiAlN resists better at high temperatures and it is recommended for cutting of high alloy steels, stainless steels and very hard with high cutting speeds. The coefficient of friction of this coating is equal to 0,45 and allows the use of circular saws in conditions of  low lubrication or of micro-nebulization but also in case of cutting applications with plenty of cooling.

COATING FEATURES
Colour • Grey
Hardness • 3600 Vickers (HV 0,05)
Max Oxidation Temperature • 800 °C
Tenaciousness • High at high temperatures
Resistance • High to adhesive and abrasive hardwearing
Adhesion • Discrete to the surface of the machine tool
Thickness of the Coating • 2,5 micron
Steel friction coefficient • 0,45