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CrAlYO coated cutter and preparation method thereof

A coating and cutting tool technology, applied in the field of CrAlYO coated cutting tools and its preparation, can solve problems such as cracked surface, coating peeling, pores, etc., and achieve the effects of low production cost, improved thermal stability, and simple process

Pending Publication Date: 2021-11-19
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, due to the limitation of deposition temperature, PVD-Al 2 o 3 The crystal structure of the coating is a metastable phase or an amorphous phase, and it is stable to the corundum structure (α-)Al in high temperature applications. 2 o 3 Transformation accompanied by volume shrinkage, forming pores, cracks and surface uneven defects, causing coating peeling in severe cases

Method used

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  • CrAlYO coated cutter and preparation method thereof
  • CrAlYO coated cutter and preparation method thereof
  • CrAlYO coated cutter and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A kind of CrAlYO coating tool of the present invention, as figure 1 As shown, including the tool substrate 1 and the CrAlYO coating deposited on the tool substrate 1, the CrAlYO coating is specifically (Cr 1-a-b al a Y b ) 2 o 3 Layer 3, (Cr 1-a-b al a Y b )2 o 3 In layer 3, a=0.5, b=0.03, and the thickness is 1.0 μm.

[0031] In this embodiment, the crystal structure of CrAlYO coating is corundum Al 2 o 3 The structure of the hexagonal phase.

[0032] In this embodiment, Ti is also deposited between the tool substrate 1 and the CrAlYO coating. 1-x Al x N transition layer 2, Ti 1-x Al x In the N transition layer 2, x=0.5, the thickness is 2.0 μm, Ti 1-x Al x The crystal structure of the N transition layer 2 is a face centered cubic structure.

[0033] In this embodiment, the cutter base 1 adopts a cemented carbide blade whose model is CNMG120408.

[0034] A kind of preparation method of the CrAlYO coated cutting tool of above-mentioned present embodime...

Embodiment 2

[0044] A kind of CrAlYO coating tool of the present invention, as figure 1 As shown, including the tool base 1 and the (Cr 1-a-b Al a Y b ) 2 o 3 Layer 3, tool substrate 1 and (Cr 1-a-b Al a Y b ) 2 o 3 Ti was also deposited between layers 3 1-x Al x N transition layer 2, where Ti 1-x Al x In the N transition layer 2, x=0.5, the thickness is 2.0 μm, (Cr 1-a-b Al a Y b ) 2 o 3 In layer 3, a=0.7, b=0.01, and the thickness is 1.0 μm.

[0045] In the present embodiment, the XRD detection result shows that Ti 1-x Al x The N transition layer 2 is a single-phase cubic structure, (Cr 1-a-b Al a Y b ) 2 o 3 Layer 3 is a single-phase corundum structure.

[0046] The CrAlYO coated tool A prepared in this example and the reference product were subjected to a comparative experiment of continuous turning of stainless steel (1Cr18Ni9Ti), and the results of the comparative experiment are shown in Table 2 below.

[0047] The comparative experimental effect of the CrAl...

Embodiment 3

[0051] A kind of CrAlYO coating tool of the present invention, as figure 1 As shown, including the tool base 1 and the (Cr 1-a-b Al a Y b ) 2 o 3 Layer 3, tool substrate 1 and (Cr 1-a-b Al a Y b ) 2 o 3 Ti was also deposited between layers 3 1-x Al x N transition layer 2, where Ti 1-x Al x In the N transition layer 2, x=0.67, the thickness is 1.5 μm, (Cr 1-a-b Al a Y b ) 2 o 3 In layer 3, a=0.3, b=0.005, and the thickness is 1.5 μm.

[0052] In the present embodiment, the XRD detection result shows that Ti 1-x Al x The N transition layer 2 is a single-phase face-centered cubic structure, (Cr 1-a- b Al a Y b ) 2 o 3 Layer 3 has a single-phase corundum structure (hexagonal phase).

[0053] The CrAlYO coated tool A prepared in this example and the reference product were subjected to a comparative experiment of continuous turning of stainless steel (1Cr18Ni9Ti), and the results of the comparative experiment are shown in Table 3 below.

[0054] The compar...

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Abstract

The invention discloses a CrAlYO coated cutter and a preparation method thereof. The coated cutter comprises a cutter substrate and a (Cr1-a-bAlaYb)2O3 layer which is deposited on the cutter substrate and is of a corundum structure. The preparation method comprises the following steps: pretreating the cutter substrate; then, selectively depositing a Ti1-xAlxN transition layer of a face-centered cubic structure; and depositing a CrAlYO coating. The coated cutter has high hardness, high abrasion resistance and excellent high-temperature oxidation-resistant property; furthermore, the bonding strength between the coating and the substrate is high; and the preparation method is simple in process and low in production cost.

Description

technical field [0001] The invention belongs to the technical field of cutting tool preparation, and relates to a coated cutting tool and a preparation method thereof, in particular to a CrAlYO coated tool and a preparation method thereof. Background technique [0002] The coated tool combines the advantages of high wear resistance and low friction coefficient of the surface coating with the high toughness and high strength of the matrix, which can greatly improve the cutting performance of the tool and improve the machining efficiency. [0003] al 2 o 3 The coating has good high temperature chemical stability and excellent oxidation resistance and diffusion wear resistance. Coating on the surface of cemented carbide tools can effectively prevent the high temperature oxide layer from diffusing to the tool substrate or other coatings. One of the most ideal coating materials for cutting performance and service life in dry cutting conditions. al 2 o 3 Coating preparation t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C14/08C23C14/06C23C14/22
CPCC23C14/08C23C14/0641C23C14/0021C23C14/22
Inventor 吴明晶陈利李佳裴斐
Owner ZHUZHOU CEMENTED CARBIDE CUTTING TOOLS CO LTD
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