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TiAlN/CrN multilayer coating for titanium alloy cutting tool and preparation method thereof

A multi-layer coating and cutting tool technology, which is applied in metal material coating process, coating, ion implantation plating, etc., can solve the problem of low fracture toughness of multi-layer tool coating, so as to facilitate large-scale production in factories and reduce Amount of wear, good effect

Active Publication Date: 2018-07-06
NORTHEASTERN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problem of low fracture toughness of multi-component tool coatings, to provide a multi-layer structure tool coating for titanium alloy cutting and its preparation method

Method used

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  • TiAlN/CrN multilayer coating for titanium alloy cutting tool and preparation method thereof
  • TiAlN/CrN multilayer coating for titanium alloy cutting tool and preparation method thereof
  • TiAlN/CrN multilayer coating for titanium alloy cutting tool and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Example 1 The control time of each layer is 15s for deposition

[0050] A TiAlN / CrN multilayer coating for titanium alloy cutting with a modulation period of 12nm.

[0051] A preparation method of TiAlN / CrN multilayer coating for titanium alloy cutting, comprising the following steps:

[0052] Step 1, pretreatment of the tool substrate:

[0053] Carry out wet sandblasting treatment on the tool substrate, after cleaning, dry at 150°C for 15 minutes, and put it into a vacuum chamber; among them, the composition of the sandblasting used for wet sandblasting treatment is: alumina abrasive with a particle size of 600 mesh 32%, anti-rust agent 2%, water 66%; sandblasting pressure 0.5MPa, sandblasting time 20min; tool substrate cleaning process: first use commercial finished cleaning agent to clean the tool substrate for 10 minutes, and then use deionized water to clean for 5 minutes ;

[0054] Step 2, reverse cleaning of the tool substrate:

[0055] When the vacuum degree...

Embodiment 2

[0063] Example 2 The control time of each layer is 30s for deposition

[0064] A TiAlN / CrN multilayer coating for titanium alloy cutting with a modulation period of 25nm.

[0065] A preparation method of TiAlN / CrN multilayer coating for titanium alloy cutting, comprising the following steps:

[0066] Step 1, pretreatment of the tool substrate:

[0067] Carry out wet sandblasting treatment on the tool substrate, after cleaning, dry at 150°C for 15 minutes, and put it into a vacuum chamber; among them, the composition of the sandblasting used for wet sandblasting treatment is: alumina abrasive with a particle size of 600 mesh 32%, anti-rust agent 2%, water 66%; sandblasting pressure 0.5MPa, sandblasting time 20min; tool substrate cleaning process: first use commercial finished cleaning agent to clean the tool substrate for 10 minutes, and then use deionized water to clean for 5 minutes ;

[0068] Step 2, reverse cleaning of the tool substrate:

[0069] When the vacuum degree...

Embodiment 3

[0077] Example 3 The control time of each layer is 6 minutes for deposition

[0078] A TiAlN / CrN multilayer coating for titanium alloy cutting with a modulation period of 270nm.

[0079] A preparation method of TiAlN / CrN multilayer coating for titanium alloy cutting, comprising the following steps:

[0080] Step 1, pretreatment of the tool substrate:

[0081] Carry out wet sandblasting treatment on the tool substrate, after cleaning, dry at 150°C for 15 minutes, and put it into a vacuum chamber; among them, the composition of the sandblasting used for wet sandblasting treatment is: alumina abrasive with a particle size of 600 mesh 32%, anti-rust agent 2%, water 66%; sandblasting pressure 0.5MPa, sandblasting time 20min; tool substrate cleaning process: first use commercial finished cleaning agent to clean the tool substrate for 10 minutes, and then use deionized water to clean for 5 minutes ;

[0082] Step 2, reverse cleaning of the tool substrate:

[0083] When the vacuum...

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Abstract

The invention relates to a TiAlN / CrN multilayer coating for a titanium alloy cutting tool and a preparation method thereof and belongs to the technical field of tool protective coatings for difficult-to-machine material cutting. The TiAlN / CrN multilayer coating for the titanium alloy cutting tool comprises a pure Cr metal layer making contact with a substratum, a plurality of CrN layers and a plurality of TiAlN layers, the CrN layers and the TiAlN layers are alternately laminated on the Cr metal layer. Through the multilayer cutting tool coating capable of improving the cutting tool coating fracture toughness property and bonding force and the preparation method thereof, the manufactured cutting tool with the coating can effectively reduce the chattering conditions during titanium alloy cutting machining, the comprehensive performance of the cutting tool coating is improved, and the service life of the cutting tool with the coating can be effectively prolonged. The cutting tool with the prepared coating is quite suitable for titanium machining and titanium alloy machining.

Description

technical field [0001] The invention relates to a TiAlN / CrN multilayer coating for a titanium alloy cutting tool and a preparation method thereof, and belongs to the technical field of tool protective coatings for cutting difficult-to-machine materials. Background technique [0002] Titanium alloy has excellent properties such as high strength, light weight, heat resistance and corrosion resistance. It has become one of the key engineering materials and has broad application prospects in aviation, transportation, petrochemical and biomedical fields. [0003] However, the high temperature strength, low thermal conductivity, and high chemical affinity of titanium alloys lead to difficult machining, low efficiency, and high cost. At present, commercial tool coatings still have problems such as poor wear resistance, easy oxidation, and easy peeling when cutting titanium alloys. Among them, fracture toughness is one of the important factors affecting the cutting performance of t...

Claims

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Application Information

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IPC IPC(8): C23C14/06C23C14/16C23C14/35
CPCC23C14/0036C23C14/0641C23C14/165C23C14/352
Inventor 李国建秦靖宜周尧尧江陈杰王凯王强
Owner NORTHEASTERN UNIV
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