Use of laser ablation for formation of discontinuous (discrete) wear-resistant coatings formed on solid carbide cutting tool by electron beam alloying and vacuum-arc deposition

Abstract

-A technological process of solid carbide cutting tool surface treatment by selective laser ablation of wear-resistant coating is described. Discontinuous coating is achieved by laser ablation of pre-deposited complex coating, formed by NbHfTi electron beam alloying with subsequent vacuum arc (TiAl)N coating. It is shown that this treatment helps to slow down the wearing process of cutting inserts on their rake and flank surfaces, thus increasing the tool lifetime.

Application of roller burnishing technologies to improve the wear resistance of submerged pump parts made of powder alloys

“…They often cause premature breakdowns of oil production pumping equipment. In the case of unsecured fluid inflow (insufficient reservoir pressure and bottom-hole pressure), stagnation and blockage by mechanical particles of the guide vanes can be observed: it leads to inevitable failure of the centrifugal pump stage [20].…”

The influence of duplex vacuum-plasma treatment on the mechanics of complex-profile cutting tool wearing in the production of aircraft engine parts

“…The latter is especially important when it comes to finishing machining operations, such as stretching. Another effect that can be achieved by coating is minimizing the amount of used cutting fluid, and, in some cases, eliminating its use, that is implementing environmentally friendly machining technologies [11][12][13][14][15][16].…”

The formation of the cutting tool microgeometry by pulsed laser ablation

“…In addition to cutting edge treatment before coating, it is possible to adjust the cutting edge after coating or even to remove it locally [22]. It is also possible to form a surface structure that improves chip formation.…”