Gradient laminated coating tool and preparation method thereof

A gradient coating, multi-layer coating technology, applied in coating, chemical instruments and methods, metal material coating technology, etc. Apply negative effects and other issues to achieve the effect of increasing bonding strength, good overall performance, and improving hardness

Active Publication Date: 2011-12-14
篱笆斯机械科技(江苏)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The Chinese patent with publication number CN1888124 discloses the use of double target sputtering technology to alternately deposit ZrO2 layers and TiN on the surface of metal or ceramic substrates The ZrO2 / TiN multilayer coating obtained by the ZrO2 layer has a thickness of 2-8 nm, a TiN layer thickness of 0.4-1.2 nm, and a total coating thickness of 2 ~5 μm, but the physical performance parameters between the two coatings are quite different, and the coating is prone to generate large internal stress, which will have a certain negative impact on the performance and practical application of the coating

Method used

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  • Gradient laminated coating tool and preparation method thereof
  • Gradient laminated coating tool and preparation method thereof
  • Gradient laminated coating tool and preparation method thereof

Examples

Experimental program
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Embodiment 1

[0039] In this embodiment, the cutting tool is a common milling insert, its base material is: cemented carbide YT15, and the coating material is: Ti, ZrN and ZrTiN.

[0040] The preparation method is: arc ion plating deposits a Ti transition layer of about 30-40nm, and then alternately deposits ZrTiN and ZrN hard coatings with a thickness of about 150-200nm by a nitrogen flow gradient method, and finally the surface is a ZrTiN coating (deposition When using 1 Ti and 1 Zr arc target).

[0041] Specifically include the following steps:

[0042] 1) Pre-treatment: Polish the surface of the milling blade whose substrate is cemented carbide YT15 to remove surface oil, rust and other impurities, then put it in alcohol and acetone in turn, and ultrasonically clean it for 30 minutes each to remove oil and other impurities on the surface of the tool Attachments, after the hair dryer is fully dried, quickly put them into the coating machine, and vacuumize to 5.0×10 -3 Pa, heat to 300 ℃,...

Embodiment 2

[0054] In this embodiment, the tool is an ordinary twist drill, and its base material is: high-speed steel W18Cr4V; the coating material is: Ti, ZrN and ZrTiN.

[0055] The preparation method is: arc ion plating deposits a Ti transition layer of about 30-40nm, and then alternately deposits ZrTiN and ZrN hard coatings with a thickness of about 150-200nm by a nitrogen flow gradient method, and finally the surface is a ZrTiN coating (deposition When using 1 Ti and 1 Zr arc target).

[0056] Specifically include the following steps:

[0057] 1) Pre-treatment: Grind the surface of the twist drill substrate whose substrate material is high-speed steel W18Cr4V with No. 2000 sandpaper to remove impurities such as oil stains and rust on the surface, then put them in alcohol and acetone in turn, and ultrasonically clean them for 30 minutes each to remove the tool surface Oil stains and other attachments should be quickly put into the coating machine after the hair dryer is fully dried,...

Embodiment 3

[0068] The tool is an ordinary milling insert, the base material is: cemented carbide YT15; the coating material is: Ti, Ti / Zr and MoS 2 / Ti / Zr;

[0069] Deposition using 1 Ti arc target, 1 Zr arc target and 2 MoS 2 Intermediate frequency sputtering target, its preparation process is:

[0070] 1) Pre-treatment: Polish the surface of the cemented carbide YT15 milling blade substrate to remove surface oil, rust and other impurities, then put them in alcohol and acetone in sequence, and ultrasonically clean them for 25 minutes each to remove oil and other attachments on the surface of the tool. After the hair dryer is fully dried, quickly put it into the coating machine, and vacuumize to 5.0×10 -3 Pa, heat to 300 ℃, keep warm for 30~40 min;

[0071] 2) Ion cleaning: pass Ar gas, the pressure is 1.5 Pa, turn on the bias power supply, voltage 1000 V, duty cycle 0.2, glow discharge cleaning for 15 min; reduce the bias voltage to 800 V / 0.2, turn on the ion source ion cleaning 25...

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Abstract

The invention relates to a gradient multiple coating tool and a preparation method thereof, which belong to the technical field of metal cutters. The tool comprises a tool substrate with multiple coatings and is characterized in that the multiple coatings from top down comprise a ZrTiN coating, a ZrTiN and ZrN alternating gradient coating and a Ti transitional coating in turn. In the invention, the coatings are prepared by an arc coating process, the coated tool has the combined structural characteristics of the ZrN hard coating, the ZrTiN hard coating and the gradient coating, and thus, the hardness of the coatings and overall strength and impact resistance of the coatings are improved, the wear resistance of the coated tool is obviously improved and the service life of the tool is prolonged. The gradient coating tool is a novel composite ultra-hard coating tool.

Description

[0001] technical field [0002] The invention belongs to the technical field of metal cutting tools, and in particular relates to a gradient laminate coating tool and a preparation method thereof. Background technique [0003] Coating the tool is one of the important ways to improve the performance of the tool. The coated tool combines the tool substrate with the coating, which greatly improves the performance of the tool. Nitride single-coated tools such as TiN and ZrN have become the most widely used coated tools since they were successfully applied to cutting tools in the 1970s. However, with the development of cutting technology and the promotion of high-speed cutting technology, the relatively poor toughness and wear resistance of nitride hard coatings limit its application. The toughness, bonding strength and impact resistance of the hard coating can be significantly improved by preparing a gradient composite structure or a laminated coating. The gradient composite s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C14/06C23C14/16C23C14/02C23C14/32B32B9/04B32B15/00
Inventor 宋文龙张立银徐刚徐长重邓建新闫建峰李宣秋张亮宋润州冯西友
Owner 篱笆斯机械科技(江苏)有限公司
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