In cold forming works, be they sheet metal forming, blanking or drawing, the elements involved (such as punches, dies, blank holders, etc.) are subjected to wear, which adversely impacts productivity and the quality of formed parts.
Adhesive wear and abrasive wear are the main failure mechanisms suffered during these processes, due to the stress that elements must withstand.
In order to counter these types of wear, steel must have maximum hardness, a low friction coefficient and great ductility – which can be achieved by applying specific coatings and special treatments.
Abrasive wear is caused by the relative motion of two elements whose surfaces do not have the same hardness against one another. Abrasive wear results in galling phenomena – the greater the difference in hardness between the surfaces, the more visible the effects.
These are irreversible and worsen gradually, thereby producing more waste and requiring repeated maintenance downtime.
In this particular case, the coating improves the mould’s surface hardness – the harder the surface, the greater its abrasion resistance.
The issues relating to adhesive wear or sticking are caused by the relative motion of two parts and arise when particles are transferred from one surface to the other.
Due to their surface coarseness, contact points between sheet metal and mould can be subjected to such high pressures that they exceed the yield point of materials, thus generating plastic deformation.
Titanium based coating for cold forming of stainless steel sheet, high-resistance steel sheet and high-thickness Fe sheet.
It has excellent anti-sticking properties, high wear resistance and reduced friction coefficient.
ANTI-ADHESION
ANTI-ABRASION
INCREASE IN HARDNESS
COF REDUCTION
Multilayer TiAICN coating deposited using arc technology.
Excellent for drawing and blanking of stainless steel or iron sheets.
ANTI-ADHESION
ANTI-ABRASION
INCREASE IN HARDNESS
COF REDUCTION
Carbon-based DLC coating deposited using PACVD technology.
Excellent for sheet metal forming and blanking of aluminium alloys.
ANTI-ADHESION
ANTI-ABRASION
INCREASE IN HARDNESS
COF REDUCTION
AlCrN coating deposited using arc technology.
Excellent for drawing and blanking of high-resistance and superalloy sheets.
ANTI-ADHESION
ANTI-ABRASION
INCREASE IN HARDNESS
COF REDUCTION
DO YOU WANT MORE INFORMATION?
Fill in the form and send it back to us.
You will be contacted shortly by a member of Lafer’s R&D team.