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Hard coating cutting tool with gradient composite structure and preparation method of hard coating cutting tool

A composite structure, hard coating technology, applied in the coating, metal material coating process, vacuum evaporation plating, etc., can solve the problems of high stress of the base coating, poor heat resistance, weak bonding strength of the film base, etc. , to achieve the effect of expanding the application range, improving wear resistance and reducing internal stress

Pending Publication Date: 2022-06-07
ZHUZHOU CEMENTED CARBIDE CUTTING TOOLS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The technical problem to be solved by the present invention is to overcome the deficiencies in the prior art, especially for existing TiB 2 The stress of the base coating is too high, the bonding strength of the film base is weak, and the heat resistance is poor. It provides a low stress, high toughness, high bonding strength of the film base, excellent wear resistance and high heat resistance and can be expanded. TiB 2 Gradient Composite Structure Hard Coated Cutting Tool with Application Range of Base Coating and Its Preparation Method

Method used

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  • Hard coating cutting tool with gradient composite structure and preparation method of hard coating cutting tool

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Effect test

Embodiment 1

[0053] A kind of hard coating tool containing gradient composite structure of the present invention, such as figure 1 As shown, it includes a tool base 10 and a hard coating 30 deposited on the tool base 10. The hard coating 30 includes a multi-layer coating 32 of a gradient composite structure (also referred to as a gradient layer 32) and provided on the gradient composite structure. The functional layer 33 on the surface of the multi-layer coating 32, the functional layer 33 is TiB 2 layer, gradient composite structure multilayer coating 32 comprising alternately deposited Ti 1-x Al x N layer 322 and TiBN layer 321, Ti 1-x Al x In the N layer 322, x is 0.6, that is, Ti 0.40 Al 0.60 N layer, Ti 1-x Al x The thickness of the N layer 322 decreases as the distance from the tool base 10 increases, and the thickness of the TiBN layer 321 increases as the distance from the tool base 10 increases. The first layer of the gradient composite structure multilayer coating 32 is Ti...

Embodiment 2

[0084] A kind of hard coating tool containing gradient composite structure of the present invention, such as figure 1 As shown, it includes a tool base 10 and a hard coating 30 deposited on the tool base 10. The hard coating 30 includes a gradient composite structure multilayer coating 32 and a functional layer provided on the surface of the gradient composite structure multilayer coating 32 33, the functional layer 33 is TiB 2 layer, gradient composite structure multilayer coating 32 comprising alternately deposited Ti 1-x Al x N layer 322 and TiBN layer 321, Ti 1-x Al x In the N layer 322, x is 0.6, that is, Ti 0.40 Al 0.60 N layer, Ti 1-x Al x The thickness of the N layer 322 decreases as the distance from the tool base 10 increases, and the thickness of the TiBN layer 321 increases as the distance from the tool base 10 increases. The first layer of the gradient composite structure multilayer coating 32 is Ti 0.40 Al 0.60 N layers, the last layer is TiBN layer 321,...

Embodiment 3

[0112] A kind of hard coating tool containing gradient composite structure of the present invention, such as figure 1 As shown, it includes a tool base 10 and a hard coating 30 deposited on the tool base 10. The hard coating 30 includes a gradient composite structure multilayer coating 32 and a functional layer provided on the surface of the gradient composite structure multilayer coating 32 33, the functional layer 33 is TiB 2 layer, gradient composite structure multilayer coating 32 comprising alternately deposited Ti 1-x Al x N layer 322 and TiBN layer 321, Ti 1-x Al x In the N layer 322, x is 0.5, that is, Ti 0.50 Al 0.50 N layer, Ti 0.50 Al 0.50 The number of N / TiBN modulation cycles is 5, the first cycle: Ti 0.50 Al 0.50 The thickness of the N layer is 350 nm, the thickness of the TiBN layer 321 is 30 nm, and the second period: Ti 0.50 Al 0.50 The thickness of the N layer is 260 nm, the thickness of the TiBN layer 321 is 60 nm, and the third period: Ti 0.50 A...

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Abstract

The invention discloses a hard coating cutter containing a gradient composite structure and a preparation method thereof.The cutter comprises a cutter base body and a hard coating, the hard coating comprises a gradient composite structure multi-layer coating and a functional layer TiB2 arranged on the surface of the multi-layer coating, the multi-layer coating comprises Ti1-xAlxN layers and TiBN layers, and the Ti1-xAlxN layers and the TiBN layers are alternately deposited; the thickness of the Ti < 1-x > Al < x > N layer is reduced along with increasing of the distance relative to the cutter base body, and the thickness of the TiBN layer is increased along with increasing of the distance relative to the cutter base body. The preparation method comprises the steps that the interface layer and the supporting layer are deposited on the pretreated cutter base body, then the Ti < 1-x > Al < x > N layers and the TiBN layers are alternately deposited, and then the functional layer is deposited. The hard coating cutter has the advantages of low stress, high strength and toughness, high film-substrate bonding strength, excellent wear resistance, high heat resistance and the like, the application range of the TiB2-based coating can be expanded, and the preparation method is simple in process and low in production cost.

Description

technical field [0001] The invention relates to the technical field of coating of cutting tools, in particular to a hard coating tool with a gradient composite structure and a preparation method thereof. Background technique [0002] In the 1970s, the first generation of hard coating TiN was successfully applied in the field of cutting tools, which was another major change in the field of cutting after the invention of cemented carbide. The hard coating on the surface of the tool can significantly improve the wear resistance and high temperature performance of the tool, and promote the cutting process to high-speed, high-efficiency dry green processing. With the rapid development of coating technology, TiAlN, CrAlN, TiAlSiN, CrAlSiN and their multi-layer coatings have become the most widely used coating materials due to their good mechanical properties, oxidation resistance and thermal stability. However, with the rapid development of modern manufacturing, various new super...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C14/00C23C14/02C23C14/06C23C14/35
CPCC23C14/0084C23C14/0641C23C14/35C23C14/022
Inventor 裴斐陈响明温光华汤爱民罗胜罗学全
Owner ZHUZHOU CEMENTED CARBIDE CUTTING TOOLS CO LTD
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