Supercharge Your Innovation With Domain-Expert AI Agents!

Surface-coated high hardness material for tool

A technology with surface coverage and high hardness, which is applied in the manufacture of tools, metal material coating processes, workpieces, etc., can solve the problems of reduced machining accuracy and higher cutting resistance, and achieve excellent hardness, heat resistance, and improved defect resistance. Effect

Inactive Publication Date: 2006-07-26
SUMITOMO ELECTRIC IND LTD
View PDF2 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In addition, in high-precision machining, the "roundness part" that occurs on the edge of the existing cutting edge reduces the machining accuracy, and because the specific cutting resistance becomes higher, it is the first step to reduce this "roundness part". Two topics

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 high hardness material for tool
  • Surface-coated high hardness material for tool
  • Surface-coated high hardness material for tool

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A binder powder in which TiN and aluminum were mixed at a weight ratio of 80:20 was obtained using a pot and a base made of cemented carbide. Next, this bonding material and CBN powder were prepared at a volume ratio of 40:60, filled into a Mo container, and sintered at a pressure of 50 kb (5 GPa) and a temperature of 1450° C. for 20 minutes. In the sintered body, aluminum compounds known as aluminum nitride, aluminum oxide, and aluminum boride are contained. After processing this sintered body into the shape of a chip for cutting tools (model number SNGN120408) and the shape of a blade for grooving tools (model number BNGNT0250R), the chips described in Table 1 were covered by vacuum arc discharge ion plating. cover film shown.

[0039] In the film forming apparatus, a plurality of targets are arranged, and the above-mentioned blade is mounted on a rotary substrate holder provided around these targets to form a film. As the target, Ti with the same composition as the...

Embodiment 2

[0093] The effect of changing the crystal orientation and average particle size was investigated. Similar to Example 1, the surface of the tool is covered with a high-hardness material and processed into an insert shape (model number SNGN120408). However, the film thickness, X-ray diffraction intensity I(200) / I(111), and average crystal grain size were varied in various ways. In this example, a wear-resistant layer was fabricated to (Ti 0.6 al 0.4 ) N-based, the tools without the most surface layer and the middle layer are covered with high-hardness materials on the surface. When the bias voltage is increased, the value of I(200) / I(111) tends to be smaller, and the average crystal grain size becomes smaller as the bias voltage becomes higher, and becomes smaller as the film thickness becomes thinner. tendency. The properties of the inserts thus obtained are shown in Table 8.

[0094] Sample No.

Bias voltage (V)

wear layer

composition

film th...

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
thicknessaaaaaaaaaa
particle sizeaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The utility model provides a tool for precise machining of quenched steel and slotting machining by thinning the cover film of a CBN sintered body tool. The CBN sintered body is taken as the basal material of the invention; the surface of the basal material is provided with at least one layer of cover film which is thick more than 0.1um but less than 1um and is made from the compound containing the main ingredients of any at least one element from C, N and O, and any at least one element from Ti and Al; the surface of the tool is covered with the material of high hardness; the material used for the slotting tool shows excellent property; the cover film comprises a middle layer, a wear resistant layer and a surface layer.

Description

technical field [0001] The present invention relates to the improvement of a tool material which uses cubic boron nitride (CBN) as a main component of a CBN sintered body and covers it with a thin film. Background technique [0002] CBN is a material with a high hardness second only to gemstones, and its alloys have low reactivity, so its sintered body is used for cutting heat-resistant alloys or hardened steels. In such a high-hardness CBN sintered body, the coating has the effect of preventing wear of the blade. The coating film has a rounded portion at the cutting edge of the blade, and the rounded portion becomes larger as the film thickness becomes thicker. Patent Document 1 discloses a covered CBN sintered body having a wear-resistant layer, an intermediate layer, and an outermost layer on a CBN sintered body. Surface-coated high-hardness materials for tools have been proposed in which TiAl (CNO) or the like is coated as the wear-resistant layer and TiN or the like i...

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 Applications(China)
IPC IPC(8): B23B27/14B23B27/20B23B27/04C04B41/87C23C14/06C23C30/00
CPCB23B27/04C23C30/005B23B2226/125B23B2222/28B23B2226/315B23B27/148B23B2224/32B23B2228/105C04B41/87C04B41/89C04B41/5068C04B41/52Y10T428/265Y10T428/252C04B41/4529C04B41/5063B23B27/14C23C14/06B23B27/20
Inventor 冈村克己久木野晓松川伦子后藤光宏
Owner SUMITOMO ELECTRIC IND LTD
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com