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Cutting tool coated with hard alloy and spraying target material for producing same

A cemented carbide, coating technology, applied in the direction of coating, layered products, accessories of toolholders, etc., can solve problems such as unsatisfactory wear resistance

Active Publication Date: 2013-08-14
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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  • Cutting tool coated with hard alloy and spraying target material for producing same
  • Cutting tool coated with hard alloy and spraying target material for producing same
  • Cutting tool coated with hard alloy and spraying target material for producing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Example 1 uses four layers of coatings, including coating 1 and coating 2 (example B2a), and a periodic alternating sequence of coating 1b and coating 2 (example B2b), to illustrate the impact of changes in tantalum content, as shown in Section One coating layer (1a, 1b) has a constant Al / Ti ratio (Al / Ti=2), then in any case the composition of the second coating layer is stable (see Table 1).

[0037] The service life was increased by 78% with coating B2a compared to the reference example. If coating B2b is used, it is possible to double the service life.

Embodiment 2

[0039] Example 2 employs four coating layers comprising a periodic alternating sequence of Coating 1b and Coating 2 (Example B3a), or Coating 1c and Coating 2 (Example B2b), to illustrate the Al / Ti ratio (Al / Ti = 1.5; aluminum / titanium = 2), if the first coating layer has a stable tantalum content, the composition of the second coating layer is in any case the same (see Table 2).

[0040] Thus, comparing the reference example with both coating B3a and coating B2b, an increase in service life can be obtained; in the case of coating B3a, 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 B4 compared to the reference example.

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Abstract

A coated hard alloy cutting tool, which includes hard alloy, tool steel, cermet or any superhard material as the substrate, and also includes two or more layers of coatings, at least one of which is composed of Titanium-aluminum-tantalum-nickel (Ti-Al-Ta-N), with at least one additional layer consisting of titanium-aluminum-tantalum-Me-nickel (Ti-Al-Ta-Me-N), such Me One or more elements selected from silicon (Si), vanadium (V), and boron (B). This wear part is distinguished by high strength and wear resistance, which can prolong the service life especially in the case of high strength requirements 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. Cermet 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, this category of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23B27/14B32B33/00B32B18/00C23C16/30C23C14/06C23C14/34
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