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

Coated cutting tool and preparation method thereof

A cutting tool and coating technology, which is applied in the field of coated cutting tools and its preparation, can solve problems such as adverse effects on performance, grain coarsening, and low surface smoothness, so as to improve production efficiency, product quality stability, and surface The effect of super smoothness and excellent anti-stick properties

Pending Publication Date: 2020-11-06
ZHUZHOU CEMENTED CARBIDE CUTTING TOOLS CO LTD
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the existing related research, there are defects such as grain coarsening and poor surface smoothness in the prepared CVD-AlTiN and CVD-AlTiCN coatings, which have an adverse effect on the performance.

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
  • Coated cutting tool and preparation method thereof
  • Coated cutting tool and preparation method thereof
  • Coated cutting tool and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A coated cutting tool according to the present invention comprises a tool substrate and one or more wear-resistant coatings coated on the tool substrate, the wear-resistant coating has a total thickness of 2 μm to 25 μm, and at least includes the use of low-pressure chemical Al prepared by vapor phase deposition method (LPCVD) x Ti 1-x N 1-y-z C y o z Coating, wherein, 0.45≤x≤0.95, 0x Ti 1-x N 1-y-z C y o z The main phase of the coating is Al with a face-centered cubic crystal structure x Ti 1-x N 1-y-z C y o z Mutually. Measured using a scanning electron microscope, Al x Ti 1-x N 1-y-z C y o z The coating exhibits as figure 2 The cross-sectional morphology shown has an ultra-fine crystal structure, and the Al x Ti 1-x N 1-y-z C y o z The average width of crystal grains at the 50% thickness section of the coating is d, and the average grain width d≤0.15 μm. Al using a surface roughness meter x Ti 1-x N 1-y-z C y o z Coating surface roughnes...

Embodiment 2

[0064] The Co content is 10%, Cr 3 C 2 The mixture powder with a content of 0.51% and a WC particle size of 1AWC is pressed, sintered, and ground to produce a WC-Co cemented carbide substrate with a blade shape specified by ISO standard WNMG080408-HF. Prepare the cutters J1 and J2 respectively according to the following method.

[0065] Tool J1 uses the existing CVD process to deposit a hard base layer TiN layer on the above-mentioned tool substrate, with a deposition thickness of 0.8 μm. On the J1 tool, adopt the B coating process in Example 1 to continue to coat Al x Ti 1-x N 1-y-z C y o z coating, and then continue to coat the hard surface layer h-AlN coating on its surface using the existing CVD process, with a thickness of 0.2 μm. The structure of tool J1 is as follows figure 1 shown.

[0066] On the J2 tool, the same CVD process as J1 was used to deposit a hard base layer TiN layer on the tool substrate, with a deposition thickness of 0.9 μm. Al was then deposi...

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
Nanohardnessaaaaaaaaaa
Nanohardnessaaaaaaaaaa
Thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses a coated cutting tool and a preparation method thereof. The coated cutting tool comprises a tool base body and a wear-resistant coating with which the tool base body is coated,the wear-resistant coating has the total thickness of 2-25 micrometers, the wear-resistant coating at least comprises one layer of AlxTi1-xN1-y-zCyOz coating, and the main phase is a AlxTi1-xN1-y-zCyOz phase with face-centered cubic crystal structure, wherein x is larger than or equal to 0.45 and is smaller than or equal to 0.95, y is larger than 0 and is smaller than or equal to 0.2, and z is larger than 0 and is smaller than or equal to 0.12. The coated cutting tool has the extremely smooth surface, has excellent wear resistance and adhesion resistance, and is applicable to efficient machining of difficult-to-machine materials such as cast iron, stainless steel and high-temperature alloy.

Description

technical field [0001] The invention belongs to the field of cutting tool coating preparation, relates to a coating cutting tool and a preparation method thereof, in particular to a coating containing Al x Ti 1-x N 1-y-z C y o z A coated cutting tool and method of making the same. Background technique [0002] TiAlN coating has excellent characteristics such as high hardness, high oxidation temperature, good thermal hardness, strong adhesion, small friction coefficient and low thermal conductivity. Studies have shown that Ti 1-x Al x The structure and properties of N coatings largely depend on the Al content. With the increase of Al content, the grains of the coating are refined, and the hardness and oxidation resistance are improved to a certain extent. But beyond a certain critical value, the appearance of hexagonal close-packed AlN (h-AlN) makes its mechanical properties drop sharply. For PVD-Ti 1-x Al x N coating, whose critical Al content is roughly 0.5-0.67 a...

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): C23C16/30C23C16/44
CPCC23C16/30C23C16/44
Inventor 瞿峻陈响明王社权温光华李秀萍
Owner ZHUZHOU CEMENTED CARBIDE CUTTING TOOLS CO LTD