Cutting tool coated with hard alloy

A cemented carbide, coating technology, applied in coating, tools for lathes, metal material coating process, etc., can solve problems such as unsatisfactory wear resistance

Active Publication Date: 2006-11-01
奥地利色拉提琪有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In these cases of use, especially if no coolant is used, the wear resistance of the above-mentioned known coating methods has hitherto been unsatisfactory

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Example 1 employs four layers of coatings, including a periodic alternating sequence of coating 1 and coating 2 (Example B 2a), and coating 1b and coating 2 (Example B 2b), to illustrate the effect of varying tantalum content, If the first coating (1a, 1b) has a constant Al / Ti ratio (Al / Ti=2), the composition of the second coating is in any case stable (see Table 1).

[0037] The service life was increased by 78% with coating B 2a compared to the reference example. If coating B 2b is used, it is possible to double the service life.

Embodiment 2

[0039] Example 2 employs a periodic alternating sequence of four coatings consisting of Coating 1b and Coating 2 (Example B 3a), or Coating 1c and Coating 2 (Example B 2b), to illustrate the Al / Ti ratio (Al / titanium=1.5; aluminium / titanium=2), if the first coating has a stable tantalum content, the composition of the second coating is in any case the same (see Table 2).

[0040] Thus, comparing the reference example with both coating B 3a and coating B 2b, an increase in service life can be obtained; in the case of coating B 3a, this increase is 84%. Additionally, these experiments demonstrate the effect of the aluminum / titanium ratio on the stable tantalum content.

Embodiment 3

[0042] Example 3 demonstrates the effect of boron on service life characteristics (see Table 3).

[0043] The service life was increased by 42% with coating B 4 compared to the reference example.

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PUM

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Abstract

A tool consists of a base material selected from cemented carbide, tool steels, cermet, or hard materials, and a coating of two or more layers. At least one coating layer has the composition Ti-Al-Ta-N and at least one further coating layer has the composition Ti-Al-Ta-Me-N. The component Me is one more elements selected from the group consisting of Si, V, B. The tool, which is preferably a wearing part, is distinguished by a high wear resistance that improves the service life, in particular where high demands are imposed on the tool.

Description

technical field [0001] The invention relates to a coated cemented carbide cutting tool, which includes cemented carbide, cermet, superhard material and tool steel as the substrate, and a coating containing two or more layers. The thickness is 0.5 μm to 15 μm, and the thickness of a single coating layer is 0.0003˜5.0 μm. Background technique [0002] Carbide, cermets, superhard materials and tool steels are all used in tools that are subject to high impact wear. The term cemented carbide can be understood as a composite material consisting of a superhard material phase and a metal binder. Metal-based ceramic materials include all materials consisting of one or more cermet phases and one or more metal phases. Superhard materials include all materials with a hardness greater than 1000HV. These superhard materials include composite materials composed of group IVa to VIa elements in the periodic table of elements and carbon, nitrogen, boron or silicon elements. Of course, thi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23B27/14B32B18/00B32B33/00C23C14/06C23C14/34C23C16/30
CPCC22C14/00C22C30/00C23C14/0641C23C30/005Y10T428/24975B23B27/14
Inventor M·卡特赖因C·米肖特P·波尔茨克
Owner 奥地利色拉提琪有限公司
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