Coated tool for warm-and/or-hot working with superior galling resistance property and superior wear resistance
AssigneeHitachi Metals, Ltd.
InventorKenichi Inoue
Life of this patent
Estimating the term…
Abstract
A coated tool for warm-and/or-hot working with a superior galling resistance property and a superior wear resistance, comprising: a base material selected from the group consisting of a hot die steel and a high speed steel; and a coating as a working surface, the coating having: a layer “a” provided on said base material, the layer “a” being made of at least one kind selected from the group consisting of a nitride, a carbide and a carbonitride, each of which contains as the main constituent thereof at least one metal element selected from the group consisting of Ti, V, Cr, Al and Si; and a layer “b” provided on the layer “a”, the layer “b” being made of a sulfide.
Claims12
A coated tool in use in warm-and/or-hot working with a superior galling resistance property and a superior wear resistance, comprising:
- a base material selected from the group consisting of a hot die steel and a high speed steel;
- and
- a coating as a working surface,
- said coating having:
- a layer “a” provided on said base material, said layer “a” being made of at least one substance selected from the group consisting of a nitride, a carbide and a carbonitride, each of which contains as the main constituent thereof at least one metal element selected from the group consisting of Ti, V, Cr, Al and Si;
- and a layer “b” provided on said layer “a”, said layer “b” being made of a sulfide, further comprising a layer “c” having a surface roughness Rz of 4 to 15 μm, said layer “c” being an outermost layer of the coating.
Dependencies are inferred from the claim text.