Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of coating and preparation method thereof

A coating and strengthening layer technology is applied in the field of coating and its preparation to achieve the effects of improving toughness and strength, reducing the friction coefficient of the coating and improving the surface activity of the substrate

Active Publication Date: 2018-04-24
TECHMART SHENZHEN LTD +1
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] Based on this, the present invention aims at the deficiencies of the existing coating performance improvement technology, and proposes a coating with higher hardness and better wear resistance and a preparation method thereof

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of coating and preparation method thereof
  • A kind of coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0042] The preparation method of the above coating includes the following steps:

[0043] Step S110, the substrate is cleaned by ultrasonic wave and the surface moisture is removed.

[0044] Of course, if the surface of the substrate is clean and dry, step S110 can be omitted.

[0045] Step S120: Fix the pretreated substrate uniformly on the support and install it into the arc ion plating machine, and pump the furnace chamber to a background vacuum below 0.01 Pa, while turning on the heater to raise the temperature to 300-550°C.

[0046] Step S130: Glow cleaning is performed on the surface of the substrate.

[0047] Preferably, during glow cleaning, open the Ar flow valve and let in Ar gas, adjust the vacuum chamber to about 0.01-1 Pa, add a negative bias voltage of 300-1000V to the substrate, and perform glow sputtering cleaning on the substrate for 5 to 35 minutes;

[0048] Step S140, depositing a Cr interface implant layer and a CrN bonding layer on the surface of the substrate.

[004...

Embodiment 1

[0059] The coating preparation method applied in high-speed milling of hardened steel molds includes the following steps:

[0060] (1) Tool pretreatment: The tool is cleaned by ultrasonic cleaning with metal cleaning solution for 10 minutes, rinsed with deionized water for 5 minutes, dried and clean compressed air is used to dry the surface moisture, dried in a constant temperature oven for 5 minutes, and the tool is a cemented carbide end mill (Φ6mm) );

[0061] (2) Entering the furnace: uniformly fix the pretreated substrate on the support and load it into the arc ion coating machine, pump the furnace chamber to a background vacuum below 0.003 Pa, and turn on the heater to heat up to 450°C;

[0062] (3) Glow cleaning: Enter the Ar gas flow valve, adjust the vacuum chamber to about 0.03 Pa, add a negative bias voltage of 700V to the substrate, and perform glow sputtering cleaning on the substrate for 15 minutes;

[0063] (4) Depositing Cr interface implant layer and CrN bonding layer...

Embodiment 2

[0069] The preparation method of the coating includes the following steps:

[0070] (1) Sample pretreatment: The tool is cleaned by ultrasonic cleaning with metal cleaning solution for 10 minutes, rinsed with deionized water for 5 minutes, dried and clean compressed air is used to dry the surface moisture, dried in a constant temperature oven for 3 minutes, and the tool is a high-speed steel disc (Φ25mm x5mm) );

[0071] (2) Entering the furnace: uniformly fix the pretreated substrate on the bracket and load it into the arc ion coating machine, pump the furnace chamber to a background vacuum below 0.003 Pa, and turn on the heater to raise the temperature to 350°C;

[0072] (3) Glow cleaning: Open the Ar flow valve and let in Ar gas, adjust the vacuum chamber to about 0.03Pa, add a negative bias voltage of 700V to the substrate, and clean the substrate by glow sputtering for 15 minutes;

[0073] (4) Depositing Cr interface implant layer and CrN bonding layer: adjust the negative bias v...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
hardnessaaaaaaaaaa
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses a coating and a preparation method thereof. A coating, which comprises a Cr interface implantation layer, a CrN binding layer, an AlTiN transition layer, an AlTiCN strengthening layer and an AlTiN functional layer deposited on the surface of a substrate in sequence. The above-mentioned coating can effectively improve the hardness of the coating, reduce the friction coefficient of the coating, and prolong the service life of the substrate.

Description

Technical field [0001] The invention relates to the technical field of surface coating of tools and molds, in particular to a coating and a preparation method thereof. Background technique [0002] The PVD coatings currently used for cemented carbide tools are mainly TiN, TiC, TiAlN, AlTiN, CrN and CrAlN coatings, including their single-layer or multilayer composite structure coatings. TiAlN and AlTiN have good thermal insulation effects and comprehensive mechanical properties, and are now standard choices for many industrial processes, with a market share of about 40%. The Al content of TiAlN coating is about 50%, and the high temperature oxidation temperature is about 900℃; AlTiN coating is developed from TiAlN, which has a higher Al content (65~70%) than TiAlN, and has better oxidation resistance, but Hardness and wear resistance have declined, so new elements need to be added or better coating structure design is adopted to further improve coating performance. [0003] In the...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C23C4/12C23C4/06C23C4/10
Inventor 郭光宇王成勇陈金海钟伟强郑李娟
Owner TECHMART SHENZHEN LTD