20240051033. CUTTING TOOL WITH A TiAlN COATING HAVING RAKE AND RELIEF SURFACES WITH DIFFERENT RESIDUAL STRESSES simplified abstract (ISCAR, LTD.)

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CUTTING TOOL WITH A TiAlN COATING HAVING RAKE AND RELIEF SURFACES WITH DIFFERENT RESIDUAL STRESSES

Organization Name

ISCAR, LTD.

Inventor(s)

MARCEL Elkouby of HAIFA (IL)

TOMER Weinberger of GILON (IL)

ANTON Nikitin of HAIFA (IL)

CUTTING TOOL WITH A TiAlN COATING HAVING RAKE AND RELIEF SURFACES WITH DIFFERENT RESIDUAL STRESSES - A simplified explanation of the abstract

This abstract first appeared for US patent application 20240051033 titled 'CUTTING TOOL WITH A TiAlN COATING HAVING RAKE AND RELIEF SURFACES WITH DIFFERENT RESIDUAL STRESSES

Simplified Explanation

The abstract describes a metal cutting insert that has a substrate body made of cemented carbide, cermet, or ceramic. It also has at least one cutting edge defined between a rake face and a relief face. The cutting insert is coated with a layer of aluminum titanium nitride (AlTiN) using chemical vapor deposition (CVD) technique. The AlTiN layer has a cubic face-centered lattice structure and specific stoichiometry coefficients for aluminum, carbon, and at least one other element. The layer satisfies a specific relationship for residual stress measured on the rake face and the relief face.

  • The metal cutting insert has a substrate body made of cemented carbide, cermet, or ceramic.
  • It has at least one cutting edge defined between a rake face and a relief face.
  • The cutting insert is coated with a layer of aluminum titanium nitride (AlTiN) using chemical vapor deposition (CVD) technique.
  • The AlTiN layer has a cubic face-centered lattice structure.
  • The stoichiometry coefficients for aluminum, carbon, and at least one other element have specific ranges.
  • The layer satisfies a specific relationship for residual stress measured on the rake face and the relief face.

Potential applications of this technology:

  • Metal cutting inserts can be used in various machining operations, such as turning, milling, and drilling.
  • The improved coating with AlTiN layer can enhance the performance and durability of the cutting insert.
  • It can be used in industries that require high precision and efficiency in metal cutting processes, such as automotive, aerospace, and manufacturing.

Problems solved by this technology:

  • The coating with AlTiN layer provides better wear resistance, reducing the need for frequent tool changes.
  • It improves the cutting performance by reducing friction and heat generation.
  • The specific stoichiometry coefficients and residual stress relationship ensure consistent and reliable performance of the cutting insert.

Benefits of this technology:

  • Longer tool life and reduced downtime due to improved wear resistance.
  • Higher cutting speeds and improved productivity.
  • Enhanced surface finish and dimensional accuracy of machined parts.
  • Cost savings through reduced tooling costs and increased machining efficiency.


Original Abstract Submitted

a metal cutting insert has a substrate body of cemented carbide, cermet, or ceramic and at least one cutting edge defined between a rake face and a relief face. the cutting insert has a cvd coating including a layer of aluminum titanium nitride having a cubic face centered lattice structure, represented by a formula (altim)cnwherein a stoichiometry coefficient of aluminum is 0.30<x<0.95, wherein m is at least one element selected from the group consisting of cl and ar, with a stoichiometry coefficient of which is 0≤y<0.01, and wherein a stoichiometry coefficient of carbon is 0≤z<0.3. the (altim)cnlayer satisfies a relationship 10<|s-s|<500 mpa wherein sis the residual stress measured on the rake face, and sis the residual stress measured on the relief face.

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