Method of machining Ti, Ti-alloys and Ni-based alloys
AssigneeSandvik Intellectual Property AB
InventorsIbrahim Sadik, Jose Luis Garcia
Life of this patent
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Abstract
The use of cryogenic coolant in a machining operation in Ti, Ti-alloys or Ni-alloys together with a cutting tool of a cemented carbide substrate with a gradient surface zone with a thickness of between 50-400 μm is provided. The cemented carbide substrate has a binder phase gradient with the lowest binder phase content in the outermost part of the gradient surface zone and the cemented carbide having graphite. The arrangement leads to a significantly prolonged tool life.
Claims14
A method of using a cutting tool to machine Ti, Ti-alloys or Ni—based alloys comprising the steps of:
- providing a cutting tool comprising a cemented carbide substrate with a gradient surface zone having a thickness of between 50-400 μm and a binder phase gradient with a lowest binder phase content being in an outermost part of the gradient surface zone and wherein the cemented carbide includes graphite, wherein an amount of graphite in the gradient surface zone of the cemented carbide substrate is such that a C-porosity is CO2-CO8;
- and
- using the cutting tool in a machining operation of Ti, Ti-alloys or Ni-based alloys together with a cryogenic coolant.
A method of machining Ti, Ti alloys or Ni-based alloys comprising:
- providing a cutting tool comprising a cemented carbide substrate with a gradient surface zone having a thickness of between 50-400 μm and a binder phase gradient with a lowest binder phase content being in an outermost part of the gradient surface zone and wherein the cemented carbide includes graphite, wherein an amount of graphite in the gradient surface zone of the cemented carbide substrate is such that a C-porosity is CO2-CO8;
- and
- using the cutting tool together with a cryogenic coolant.
Dependencies are inferred from the claim text.