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Surface-coated cutting tool and method of manufacturing the same

A cutting tool and surface coating technology, applied in the field of surface coating cutting tools and their manufacturing, can solve the problems of insufficient oxidation resistance of hard coating layer and easy deterioration of film, and achieve excellent wear resistance and oxidation resistance. Excellent effect

Active Publication Date: 2018-12-04
MITSUBISHI MATERIALS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, especially when such a conventional coated tool is used for cutting in a high-temperature oxidizing atmosphere (for example, a state where the temperature rises due to cutting), the coating is likely to deteriorate due to insufficient oxidation resistance of the hard coating layer. Therefore, sufficient wear resistance cannot be exhibited in long-term use
As a result, the status quo is that the service life is reached in a relatively short period of time

Method used

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  • Surface-coated cutting tool and method of manufacturing the same
  • Surface-coated cutting tool and method of manufacturing the same
  • Surface-coated cutting tool and method of manufacturing the same

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Embodiment

[0079] As raw material powders, medium-coarse tungsten carbide (hereinafter referred to as WC) powder with an average particle size of 5.5 μm, fine-grained WC powder with an average particle size of 0.8 μm, TaC powder with an average particle size of 1.3 μm, and an average particle size of 1.2 μm NbC powder with an average particle size of 1.2 μm, ZrC powder with an average particle size of 2.3 μm, and Cr with an average particle size of 2.3 μm 3 C 2 powder, VC powder with an average particle size of 1.5 μm, (Ti, W) C[TiC / WC=50 / 50 in mass ratio] powder with an average particle size of 1.0 μm, and Co powder with an average particle size of 1.8 μm, and These raw material powders were compounded with the compounding composition shown in Table 3, respectively. Wax was further added to the mixed raw material powder, and it ball-milled and mixed in acetone for 24 hours, and dried under reduced pressure. Thereafter, various green compacts of predetermined shapes are stamped and for...

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Abstract

A surface-coated cutting tool, the surface-coated cutting tool is formed with a hard coating layer on the surface of a tool substrate made of tungsten carbide-based cemented carbide, wherein the hard coating layer has at least one layer of A (Ti1-XAlX)N layer with an average layer thickness of 0.5-10 μm, wherein 0.4≤X≤0.7, X is an atomic ratio, the (Ti, Al)N layer has a cubic crystal structure, and the hard coating layer When the average value of the absorptance at a wavelength of 400 to 500 nm is Ia (%), and the average value of the absorptivity at a wavelength of 600 to 700 nm is Ib (%), the relationship of Ia-Ib<5 is satisfied.

Description

technical field [0001] The present invention relates to a surface-coated cutting tool (hereinafter, also referred to as a coated tool) that exhibits excellent wear resistance over a long period of time due to the excellent oxidation resistance and high-temperature hardness of the hard coating layer, and its manufacturing method. [0002] This application claims priority based on Japanese Patent Application No. 2014-178723 for which it applied to Japan on September 3, 2014, and uses the content here. Background technique [0003] Generally, a surface-coated cutting tool has an insert detachably attached to the tip of a turning tool and is used for turning or planing various workpiece materials such as steel or cast iron, and is used for drilling the workpiece materials. Drills or small drills for cutting, etc., and solid end mills for face cutting, grooving, step surface processing, etc. of the workpiece material. In addition, an insert-type end mill tool in which the insert...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23B27/14B23B51/00B23C5/16B23P15/28C23C14/06C23C14/14C23C14/24C23C14/32
CPCB23B27/14B23B51/00B23C5/16B23P15/28C23C14/0641C23C14/325C23C14/3414B23B27/148B23B2222/28B23B2224/24B23B2228/08B23B2228/105B23C5/1009B23C2222/28B23C2224/24B23C2228/08B23C2228/10C23C14/06C23C14/14C23C14/24C23C14/32
Inventor 木村隆之高桥正训仙北屋和明桥本达生
Owner MITSUBISHI MATERIALS CORP