	US 12,460,302 B2
	Method of treating a coated cutting tool
Warka Slaiwa, Stockholm (SE); Nima Zarif Yussefian, Stockholm (SE); and Gabriel Paulsrud, Stockholm (SE)
Assigned to AB Sandvik Coromant, Sandviken (SE)
Appl. No. 17/638,366
Filed by AB SANDVIK COROMANT, Sandviken (SE)
PCT Filed Aug. 27, 2020, PCT No. PCT/EP2020/073911 § 371(c)(1), (2) Date Feb. 25, 2022, PCT Pub. No. WO2021/037947, PCT Pub. Date Mar. 4, 2021.
Claims priority of application No. 19194612 (EP), filed on Aug. 30, 2019.
Prior Publication US 2022/0298644 A1, Sep. 22, 2022
Int. Cl. C23C 28/04 (2006.01); C23C 16/34 (2006.01); C23C 16/56 (2006.01); C23C 30/00 (2006.01)

CPC C23C 28/044 (2013.01) [C23C 16/34 (2013.01); C23C 16/56 (2013.01); C23C 28/042 (2013.01); C23C 30/005 (2013.01)]

16 Claims

1. A method of treating a coated cutting tool using laser shock peening (LSP), the coated cutting tool including a substrate and a coating, wherein the substrate is of cemented carbide or cermet, and wherein the coating comprises a CVD layer and/or a PVD layer, the coating including an outer layer of one or more of TIN, TiCN, TiB₂, ZrCN, TiAlN or TiSiN, and wherein said method comprises a step of applying LSP to at least a portion of the coated cutting tool, wherein a LSP energy density is within 0.4 to 1.6 J/mm², wherein the outer layer has a thickness of 2-20 μm, and wherein the cutting tool includes a rake face and a flank face and a cutting edge extending between the flank face and the rake face, and wherein the LSP is applied on a portion of the cutting edge and at least a portion of the rake face.