Surface-coated cutting tools with chipping resistance and chipping resistance in the hard coating layer

A cutting tool and surface coating technology, applied in the field of surface coating cutting tools, can solve the problems of defective tool life, easy to produce chipping, etc., and achieve the effect of excellent high temperature strength and excellent chipping resistance.

Active Publication Date: 2015-09-02
MITSUBISHI MATERIALS CORP
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the above-mentioned coated tool has the problem that chipping, chipping, etc. are likely to occur under cutting conditions where a

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
  • Surface-coated cutting tools with chipping resistance and chipping resistance in the hard coating layer
  • Surface-coated cutting tools with chipping resistance and chipping resistance in the hard coating layer
  • Surface-coated cutting tools with chipping resistance and chipping resistance in the hard coating layer

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0068] [Example]

[0069] Prepare WC powder, TiC powder, ZrC powder, VC powder, TaC powder, NbC powder, Cr, all having an average particle size of 1~3μm 3 C 2 Powder, TiN powder, TaN powder, and Co powder are used as raw material powders. These raw material powders are mixed into the composition shown in Table 1, and the wax is added and ball milled in acetone for 24 hours. After drying under reduced pressure, it is pressed at 98 MPa. The compact is formed into a predetermined shape, and the compact is vacuum sintered in a vacuum of 5 Pa and maintained at a predetermined temperature in the range of 1370 to 1470°C for 1 hour. After sintering, the cutting edge is R: 0.07mm The cutting edges of WC-based cemented carbide tool bases A to E with the blade shape specified in the ISO standard·CNMG120408 are respectively manufactured.

[0070] In addition, prepare TiCN (TiC / TiN=50 / 50 in terms of mass ratio) powder and Mo, each having an average particle diameter of 0.5-2μm 2 C powder, ZrC p...

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
The average particle sizeaaaaaaaaaa
Login to view more

Abstract

The invention provides a surface covering cutting tool having excellent anti-blade-breaking performance and good anti-damage performance in cutting rigid covering layer in high speed interrupted cut. The surface covering cutting tool is provided with a rigid covering layer formed by steaming on the surface of a tool substrate containing WC rigid alloy and TiCN base metallic ceramics. The rigid covering layer includes (a) a lower part layer containing Ti compound layer and (b) an upper part layer containing aluminum oxide layer. The upper part layer is distributed with micro holes having pore diameter of 2 to 50 nm and the pore size distribution of micro holes are arranged in a bimodal distribution.

Description

technical field [0001] The present invention relates to a surface-coated cutting tool (hereinafter referred to as a coated tool), which is used in high-speed intermittent cutting of various steels or cast irons with high heat generation and intermittent or impact loads acting on the cutting edge , Since the hard coating layer has excellent chipping resistance and chipping resistance, it will exhibit excellent cutting performance after long-term use. Background technique [0002] In the past, it is generally known that the surface of a substrate (hereinafter referred to as a tool substrate) composed of tungsten carbide (hereinafter represented by WC)-based cemented carbide or titanium carbonitride (hereinafter represented by TiCN)-based cermet consists of the following Coated tools made of hard coatings composed of (a) and (b): [0003] (a) The lower layer, which is a carbide (hereinafter represented by TiC) layer, a nitride (hereinafter also represented by TiN) layer, a car...

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): B23B27/14B23P15/28C23C16/30
Inventor 龙冈翔富田兴平中村惠滋长田晃
Owner MITSUBISHI MATERIALS CORP
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