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Composite-coating cutter and preparation method thereof

A composite coating and cutting tool technology, which is applied in the field of composite coating cutting tools and its preparation, can solve the problems of affecting the performance, reducing the bonding strength of the coating and the substrate, and increasing the stress of the coating.

Inactive Publication Date: 2019-11-19
ZHUZHOU CEMENTED CARBIDE CUTTING TOOLS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the addition of Si increases the stress of the coating sharply, reduces the bonding strength between the coating and the substrate, and significantly affects its performance.

Method used

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  • Composite-coating cutter and preparation method thereof
  • Composite-coating cutter and preparation method thereof
  • Composite-coating cutter and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] A composite coating tool of the present invention, such as figure 1 As shown, it includes a tool substrate 1 and a composite coating deposited on the tool substrate 1. The composite coating includes a periodic coating that alternately deposits layers A and B, and layer A is Ti 1-a Al a N layer 3, where a=0.5, namely Ti 0.50 Al 0.50 N layer, the thickness of A layer is 100nm, and the B layer is alternately deposited Ti 1-x Al x N layer 4 and Ti 1-y-z Al y Si z Periodic coating of N layer 5 where x=0.6, y=0.35, z=0.15, i.e. Ti 0.40 Al 0.60 N layer and Ti 0.50 Al 0.35 Si 0.15 N layer, Ti 1-x Al x The monolayer thickness of N layer is 10nm, Ti 1-y-z Al y Si z The single layer thickness of the N layer is 8 nm, and the thickness of the B layer is 180 nm.

[0040] In this embodiment, the periodic coating of alternately depositing A layer and B layer is a multi-period coating with "A layer to B layer" as a cycle, and alternately deposits Ti 1-x Al x N layer a...

Embodiment 2

[0051] A kind of composite coated cutter of the present invention is basically the same as the composite coated cutter of embodiment 1 and its preparation method, the only difference is: as figure 2 As shown, the composite coating also includes a TiAl metal layer 2 (using a TiAl target) deposited on the surface of the tool substrate 1, and the periodic coating of alternately depositing A layers and B layers is deposited on the TiAl metal layer 2, and the TiAl metal layer 2 The thickness of the composite coating is 25 nm, and the total thickness of the composite coating is 2.825 μm.

[0052] The reference substance also uses the above two cemented carbide inserts as the cutter substrate, and deposits a common AlTiN coating according to the common physical vapor deposition method, and then uses the composite coated cutter (CNMG120408) and the reference substance ( CNMG120408) carried out the comparison experiment of continuous turning stainless steel (1Cr18Ni9Ti), and the results...

Embodiment 3

[0057] A composite coated tool of the present invention is basically the same as the composite coated tool of Example 2 and its preparation method, the only difference being that the B layer contains 15 cycles of Ti 0.40 Al 0.60 N layer and Ti 0.50 Al 0.35 Si 0.15 The thickness of the N layer and the B layer is 270nm, and the total thickness of the composite coating is 3.725μm.

[0058] The reference substance also uses the above two cemented carbide inserts as the cutter substrate, and deposits a common AlTiN coating according to the common physical vapor deposition method, and then uses the composite coated cutter (CNMG120408) and the reference substance ( CNMG120408) carried out the comparative experiment of continuous turning stainless steel (1Cr18Ni9Ti), the comparative experimental results are shown in Table 3 below:

[0059] Table 3: the comparative experimental effect of the product of the present invention of embodiment 3 and reference substance

[0060]

[00...

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Abstract

The invention discloses a composite-coating cutter and a preparation method of the composite-coating cutter. The composite-coating cutter comprises a cutter matrix and a composite coating deposited onthe cutter matrix. The composite coating comprises a periodic coating which is formed by alternately depositing a coating A and a coating B, wherein the coating A is a Ti1-aAlaN layer, and the coating B is a periodic coating which is formed by alternately depositing a Ti1-xAlxN layer and a Ti1-y-zAlySizN layer. The preparation method comprises the steps that the cutter matrix is pre-processed, aTiAl metal layer is selectively deposited, and the coating A and the coating B are alternately deposited, wherein the coating B is prepared by alternately depositing the Ti1-xAlxN layer and the Ti1-y-zAlySizN layer. The composite-coating cutter has high hardness and strength and excellent high-temperature oxidation resistance, high-temperature stability and age-hardening feature. The coating and the matrix have good bonding strength. The preparation method is simple in technology and low in production cost.

Description

technical field [0001] The invention relates to a coated cutting tool and a preparation method thereof, in particular to a composite coating cutting tool and a preparation method thereof. Background technique [0002] Coated tools combine the advantages of high wear resistance, high thermal performance of the surface coating and high toughness and high strength of the substrate, which can greatly improve the cutting performance of the tool and improve the machining efficiency, and become an important development direction of modern tools. TiAlN coating has excellent properties such as high hardness, age hardening and good thermal stability, and is one of the most commonly used cutting tool coating materials at present. However, the anti-oxidation temperature of Ti-Al-N coating is low, about 800°C, which cannot meet the needs of the current development of high-speed cutting technology. [0003] In order to further improve the high-temperature performance of coatings, multi-e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C14/06
CPCC23C14/0641C23C28/044C23C28/347
Inventor 陈利刘慧君李佳吴明晶裴斐温光华
Owner ZHUZHOU CEMENTED CARBIDE CUTTING TOOLS CO LTD