Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

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
View PDF4 Cites 2 Cited by
  • 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
Chinese patent "Application No. 201711082887.3" reports a Mo-Se-Ta+TiAlTaN soft-hard composite coating tool and its preparation method. The surface layer is a Mo-Se-Ta soft coating, although this type of coating can reduce friction Lubrication, but due to its softness and insufficient wear resistance, it will be worn off quickly, and cannot continue to provide lubrication protection before the coated tool completely fails
At present, there are no reports of AlCrN, TiAlTaN, TiAlSiN multi-layer alternately deposited gradient structure coatings at home and abroad

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • 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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

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

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

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

[0040] 2 (AlCrN / TiAlTaN / TiAlSiN) composite coatings include AlCrN layers, TiAlTaN layers and TiAlSiN layers that are periodically deposited alternately from the inside to the outside, including two periods...

Embodiment 2

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

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

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Thicknessaaaaaaaaaa
Thicknessaaaaaaaaaa
Thicknessaaaaaaaaaa
Login to View More

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
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
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com