A kind of nanometer multi-layer structure film and preparation method thereof for blade rolling die

A nano-multilayer and nano-coating technology, which is applied in coating, metal material coating process, vacuum evaporation plating, etc., can solve the problems of insufficient oxidation resistance and heat resistance, cracking and peeling of TiN coating, etc. Achieve excellent mechanical properties, good bonding force, and improved service life

Active Publication Date: 2020-10-09
SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the oxidation resistance and heat resistance of the TiN coating are insufficient, and cracks and peeling will occur above 600°C in the air

Method used

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  • A kind of nanometer multi-layer structure film and preparation method thereof for blade rolling die

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Experimental program
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Effect test

Embodiment 1

[0039] A kind of nano multi-layer structure film used for blade rolling die, its structure schematic diagram is shown in figure 1 .

[0040] The nano-multilayer structure film used for blade rolling dies includes four layers of metal TiAl bottom layer 1, TiAlN transition layer 2, TiAlN / CrTiAlN nano-multilayer coating 3, and CrTiAlN surface coating layer 4, with a total thickness of 5.4 μm ;

[0041] Among them, the thickness of the metal TiAl bottom layer 1 is 0.5 μm, the thickness of the TiAlN transition layer 2 is 0.7 μm, the total thickness of the TiAlN / CrTiAlN nano-multilayer coating 3 is 3.24 μm, and the thickness of the CrTiAlN surface coating layer is 0.96 μm.

[0042] The nano-multilayer structure film used for the blade rolling die is a metal TiAl bottom layer 1 in a vacuum degree of -3 Pa, the deposition temperature is 300°C, and the deposition time is 5 minutes to obtain the metal TiAl bottom layer 1;

[0043] TiAlN transition layer 2 is in a vacuum of -3 Pa, a Ti...

Embodiment 2

[0056] A nano-multilayer structure film for blade rolling die, including four layers of metal TiAl bottom layer 1, TiAlN transition layer 2, TiAlN / CrTiAlN nano-multilayer coating 3, and CrTiAlN surface coating layer 4, with a total thickness of 6 μm ;

[0057] Among them, the thickness of the metal TiAl bottom layer 1 is 0.6 μm, the thickness of the TiAlN transition layer 2 is 0.8 μm, the total thickness of the TiAlN / CrTiAlN nano-multilayer coating 3 is 3.6 μm, and the thickness of the CrTiAlN surface coating layer is 1 μm.

[0058] The nano-multilayer structure film used for the blade rolling die is a metal TiAl bottom layer 1 in a vacuum degree of -3 Pa, the deposition temperature is 250°C, and the deposition time is 6 minutes to obtain the metal TiAl bottom layer 1;

[0059] TiAlN transition layer 2 is in a vacuum of -3 Pa, the deposition temperature is 250°C, and the deposition time is 12 minutes to obtain the TiAlN transition layer 2;

[0060] TiAlN / CrTiAlN nano multi-la...

Embodiment 3

[0071] A nano-multilayer structure film for blade rolling die, including four layers of metal TiAl bottom layer 1, TiAlN transition layer 2, TiAlN / CrTiAlN nano-multilayer coating 3, and CrTiAlN surface coating layer 4, with a total thickness of 6 μm ;

[0072] Among them, the thickness of the metal TiAl bottom layer 1 is 0.3 μm, the thickness of the TiAlN transition layer 2 is 0.6 μm, the total thickness of the TiAlN / CrTiAlN nano-multilayer coating 3 is 3 μm, and the thickness of the CrTiAlN surface coating layer is 1.1 μm.

[0073] The nano-multilayer structure film used for the blade rolling die is a metal TiAl bottom layer 1 in a vacuum degree of -3 Pa, the deposition temperature is 350°C, and the deposition time is 4 minutes to obtain the metal TiAl bottom layer 1;

[0074] TiAlN transition layer 2 is in a vacuum of -3 Pa, the deposition temperature is 350°C, and the deposition time is 8 minutes to obtain the TiAlN transition layer 2;

[0075] TiAlN / CrTiAlN nano multi-lay...

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Abstract

The invention relates to a nano multilayer film for a blade rolling die and a preparation method thereof, and belongs to the technical field of surface treatment techniques and die surface strengthening. The nano multilayer film comprises a metal TiAl bottom layer, a TiAlN transition layer, a TiAlN / CrTiAlN nano multilayer coating and a CrTiAlN surface coating layer. The method comprises the stepsof performing ultrasonic cleaning after polishing, performing vapor phase deposition, wherein the vacuum degree is less than 8*10<-3>Pa, the temperature is 250 to 350 DEG C, depositing the metal TiAlbottom layer and the TiAlN transition layer in sequence, and alternately depositing the TiAlN / CrTiAlN nano multilayer coating and the CrTiAlN surface coating layer with a strict modulation period. Themultilayer coating with a proper modulation period and modulation ratio is prepared and is applied to high-speed steel for preparing a wear resistant and high-temperature resistant hard coating, thewear resistance of the die can be obviously increased, and compared with a die without a coating to strengthen, the service life is prolonged by more than 20 times.

Description

technical field [0001] The invention relates to the field of surface treatment technology and mold surface strengthening technology, in particular to a nano-multilayer structure film used for a blade rolling mold and a preparation method thereof. Background technique [0002] With the rapid development of modern mechanical processing, the processing molds of various mechanical parts have also attracted extensive research, especially the processing molds used in aviation blades are more demanding. It is a problem that people have been studying to choose a suitable way to improve the friction and wear and high temperature resistance of such materials, so as to improve their service life. The earliest and most widely used tool coating is TiN. The use of this coating greatly prolongs the life of high-speed steel tools, reduces the number and time of tool replacement, and increases cutting speed. However, the oxidation resistance and heat resistance of the TiN coating are insuff...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C14/02C23C14/06C23C14/16C23C14/32
CPCC23C14/021C23C14/025C23C14/0641C23C14/16C23C14/325
Inventor 国振兴张冬梅张蕾马大衍邰清安
Owner SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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