A1ZrCrN composite dual-gradient coating cutting tool and preparation method thereof

A dual-gradient, tool technology, applied in coatings, tools for lathes, metal material coating processes, etc., can solve wear, damage and even fracture, the performance difference between the coating and the tool matrix, and the reduction of tool life, etc. problems, to achieve the effect of improving comprehensive mechanical properties, reducing residual thermal stress, and smoothing coefficient of thermal expansion

Active Publication Date: 2013-06-05
成都史特迪新材料科技有限公司
View PDF4 Cites 22 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the machining process, the cutting tool is the main direct performer of the cutting process, and there are inevitably wear, damage or even fracture phenomena during the cutting process of the workpiece, especially in high-speed cutting, the wear of the tool is particularly serious; After the phenomenon, the life of the tool will drop sharply, and the surface roughness of the processed workpiece will increase, which will easily cause the size of the workpiece to exceed the design tolerance. Molds and other equipment with relatively high processing difficulty, especially large-scale parts or precision parts with national defense requirements, excessive tool changes will increase the repeated positioning error of the parts, which cannot meet the design requirements
[0003] Cutting tool surface coating technology is a material surface modification technology developed to meet the market demand in recent decades. The use of coating technology can effectively improve the service life of cutting tools, so that the tool can obtain excellent comprehensive performance, thereby greatly improving the machining quality. Therefore, insiders refer to coating technology, tool material, and cutting process as the three key technologies in the field of cutting tool manufacturing; current tool coatings mainly include chemical vapor deposition method CVD and physical vapor deposition method PVD; and CVD Compared with the PVD process, the processing temperature of the PVD process is low (mostly below 600°C), and has no effect on the bending strength of the tool material. The internal stress state of the film deposited on the substrate us

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
  • A1ZrCrN composite dual-gradient coating cutting tool and preparation method thereof
  • A1ZrCrN composite dual-gradient coating cutting tool and preparation method thereof
  • A1ZrCrN composite dual-gradient coating cutting tool and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0037] A preparation method of A1ZrCrN composite double-gradient coating tool. Firstly, the tool matrix is ​​ultrasonically cleaned, and then the tool matrix and the required target are put into the vacuum chamber of the coating machine, and the tool matrix is ​​cleaned by glow discharge and ion. After coating, the coating process steps are as follows:

[0038] (1) Cr transition layer coating stage: After the vacuum chamber is evacuated, Ar gas is introduced to make the partial pressure of Ar gas in the vacuum chamber 0.4~0.6 Pa, and the bias voltage at both ends of the tool substrate is adjusted to 100~250 V. While adjusting the target current to 15A, turn on and maintain the Al target current of 0.4A and the Zr target current of 0.2A for 3.5-4.5min;

[0039] (2) Gradient CrN transition layer coating stage: pass N into the vacuum chamber 2 Gas, and adjust the amount of Ar gas to make N 2 The partial pressure ratio of gas to Ar gas is 1.5:1, the air pressure in the vacuum chamber i...

Example Embodiment

[0056] Example one

[0057] A preparation method of A1ZrCrN composite double-gradient coating tool. Firstly, the tool matrix is ​​ultrasonically cleaned, and then the tool matrix and the required target are put into the vacuum chamber of the coating machine, and the tool matrix is ​​cleaned by glow discharge and ion. After coating, the coating process steps are as follows:

[0058] (1) Cr transition layer coating stage: After the vacuum chamber is evacuated, Ar gas is introduced to make the partial pressure of Ar gas in the vacuum chamber 0.4~0.6 Pa, and the bias voltage at both ends of the tool substrate is adjusted to 100~250 V. While adjusting the target current to 15A, turn on and maintain the Al target current of 0.4A and the Zr target current of 0.2A for 4min;

[0059] (2) Gradient CrN transition layer coating stage: pass N into the vacuum chamber 2 Gas, and adjust the amount of Ar gas to make N 2 The partial pressure ratio of gas to Ar gas is 1.5:1, the air pressure in the va...

Example Embodiment

[0070] Embodiment two

[0071] A preparation method of A1ZrCrN composite double-gradient coating tool. Firstly, the tool matrix is ​​ultrasonically cleaned, and then the tool matrix and the required target are put into the vacuum chamber of the coating machine, and the tool matrix is ​​cleaned by glow discharge and ion. After coating, the coating process steps are as follows:

[0072] (1) Cr transition layer coating stage: After the vacuum chamber is evacuated, Ar gas is introduced to make the partial pressure of Ar gas in the vacuum chamber 0.4~0.6 Pa, and the bias voltage at both ends of the tool substrate is adjusted to 100~250 V. While adjusting the target current to 15A, turn on and maintain the Al target current of 0.4A and the Zr target current of 0.2A for 3.5-4.5min;

[0073] (2) Gradient CrN transition layer coating stage: pass N into the vacuum chamber 2 Gas, and adjust the amount of Ar gas to make N 2 The partial pressure ratio of gas to Ar gas is 1.5:1, the air pressure ...

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

No PUM Login to view more

Abstract

The invention relates to an A1ZrCrN composite dual-gradient coating cutting tool and a preparation method thereof. The composite dual-gradient coating cutting tool is prepared by a nonequilibrium closed field magnetron sputtering ion plating manner; and a Cr transition layer, a gradient CrN transition layer, a gradient A1ZrCrN transition layer and an A1ZrCrN layer are sequentially arranged on the coating cutting tool from inside to outside along the a vertical matrix surface direction, so that transition between coatings is smoother, residual thermal stress among all coatings can be obviously lowered in use of the coating cutting tool, and the coating quality of the cutting tool is greatly improved.

Description

technical field [0001] The invention relates to a gradient coating mechanical cutting tool and its manufacturing technology, in particular to an AlZrCrN compound double gradient coating tool and its preparation method. Background technique [0002] In the machining process, the cutting tool is the main direct performer of the cutting process, and there are inevitably wear, damage or even fracture phenomena during the cutting process of the workpiece, especially in high-speed cutting, the wear of the tool is particularly serious; After the phenomenon, the life of the tool will drop sharply, and the surface roughness of the processed workpiece will increase, which will easily cause the size of the workpiece to exceed the design tolerance. Molds and other equipment with relatively high processing difficulty, especially large-scale or precision parts with national defense requirements, excessive tool changes will increase the repeated positioning error of the parts, which cannot...

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
IPC IPC(8): C23C14/06C23C14/34B23B27/14
Inventor 李彬
Owner 成都史特迪新材料科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap