Coating with multilayer gradient structure, applied to cutting tool, and preparation method for same

A gradient structure and cutting tool technology, which is applied in the direction of coating, metal material coating process, superimposed layer plating, etc., can solve the problem of insufficient strength and toughness, increase cutting resistance and chip sticking degree on the tool surface, and cannot provide lubrication protection Effect and other problems, to achieve the effect of overcoming the incompatibility of wear resistance and toughness, excellent oxidation resistance and high temperature stability, and improving oxidation resistance and thermal stability

Active Publication Date: 2019-12-27
ZHUZHOU HUARUI PRECISION CUTTINGS TOOLS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this kind of hard coating has insufficient strength and toughness. Under the conditions of semi-machining and rough machining, the coating of the tool is prone to peeling and chipping, which will quickly aggravate the failure of the tool, and the processing efficiency and quality will also decrease. reduce
In addition, the friction coefficient between the surface of the coated tool and the processing material is high, which increases the cutting resistance and the degree of chip sticking on the tool surface. certain inapplicability
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Method used

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  • Coating with multilayer gradient structure, applied to cutting tool, and preparation method for same
  • Coating with multilayer gradient structure, applied to cutting tool, and preparation method for same
  • Coating with multilayer gradient structure, applied to cutting tool, and preparation method for same

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[0036] Example 1

[0037] Kind of like figure 1 The multi-layer gradient structure coating tool of the present invention shown in the present invention consists of a tool matrix, 2 (AlCrN / TiAlTaN), 2 (AlCrN / TiAlTaN / TiAlSiN), and 2 (TiAlTaN / TiAlSiN) coatings from the inside to the outside. The total thickness is 3.18 μm.

[0038] 2(AlCrN / TiAlTaN) coating thickness is 0.82μm, 2(AlCrN / TiAlTaN / TiAlSiN) coating thickness is 1.29μm, 2(TiAlTaN / TiAlSiN) coating thickness is 1.08μm.

[0039] 2 (AlCrN / TiAlTaN) composite coating includes AlCrN layer and TiAlTaN layer alternately deposited periodically from the inside to the outside, including two cycles, the thickness of the AlCrN single layer is 0.16 μm, and the thickness of the TiAlTaN single layer is 0.25 μm.

[0040] 2 (AlCrN / TiAlTaN / TiAlSiN) composite coating includes AlCrN layer, TiAlTaN layer and TiAlSiN layer alternately deposited periodically from the inside to the outside, including two periods. The thickness of the AlCrN layer is 0.16...

Example Embodiment

[0068] Example 2

[0069] Kind of like figure 1 The multi-layer gradient structure coating tool of the present invention shown in the present invention is composed of a tool matrix, 80 (AlCrN / TiAlTaN), 80 (AlCrN / TiAlTaN / TiAlSiN), and 50 (TiAlTaN / TiAlSiN) coatings from the inside to the outside. The total thickness is 2.45 μm.

[0070] The thickness of the 80 (AlCrN / TiAlTaN) coating is 0.78 μm, the thickness of the 80 (AlCrN / TiAlTaN / TiAlSiN) coating is 1.19 μm, and the thickness of the 50 (TiAlTaN / TiAlSiN) coating is 0.48 μm.

[0071] 80(AlCrN / TiAlTaN) composite coating includes AlCrN and TiAlTaN layers alternately deposited periodically from the inside to the outside, including 80 cycles, the thickness of the AlCrN single layer is 4.3nm, the thickness of the TiAlTaN single layer is 5.5nm; 80( AlCrN / TiAlTaN / TiAlSiN) composite coating includes AlCrN layer, TiAlTaN layer and TiAlSiN layer alternately deposited periodically from the inside to the outside, including 80 cycles, the thickn...

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Abstract

The invention provides a coating with a multilayer gradient structure, applied to a cutting tool, and a preparation method for the same. The coating comprises an m (AlCrN/TiAlTaN) layer, an n (AlCrN/TiAlTaN/TiAlSiN) layer and a k (TiAlTaN/TiAlSiN) layer which are deposited in a periodical and alternative manner, wherein the coating thickness is 0.7-9 mum; m, n and k are modulation periods; 1<=m<=1500; 0<=n<=1000; and 0<=k<=1500. The method comprises the steps that contaminated substances on the surface of the cutting tool are removed, and the surface of the cutting tool is activated; the abovecoating layers are deposited successively in a periodical and alternative manner on a matrix of the cutting tool through a cathode arc ion plating technology; and through furnace cooling, the coatingwith the multilayer gradient structure, which is applied to the cutting tool, can be obtained. The coating with the multilayer gradient structure has the beneficial effects that a contradiction of atraditional hard coating which cannot have wear resistance and toughness at the same time can be overcome; and the coating manifests high oxidation resistance and high-temperature stability.

Description

technical field [0001] The invention relates to the coating field of cutting tools, in particular to a multilayer gradient structure coating for cutting tools and a preparation method thereof. Background technique [0002] Coating technology is a revolution in the cutting field. By depositing a layer of high wear resistance and oxidation resistance coating on the surface of cutting tools, the service life of cutting tools, processing efficiency and surface quality of processed materials can be effectively improved. TiAlN coating is currently a widely used coating material due to its good oxidation resistance, mechanical properties and comprehensive performance. However, with the rapid development of modern manufacturing industry and the wide application of difficult-to-machine materials such as superalloys, titanium alloys and stainless steel alloys, advanced processing such as green, high-speed, high-efficiency and high-precision cutting for various difficult-to-machine mat...

Claims

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Application Information

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IPC IPC(8): C23C14/06C23C14/32
CPCC23C14/0021C23C14/0641C23C14/325C23C28/044
Inventor 张华栋林孝良肖旭凯高江雄
Owner ZHUZHOU HUARUI PRECISION CUTTINGS TOOLS CO LTD
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