• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

ULTRA HIGH-SPEED CUTTING OF CAST IRONS WITH CONTROLLED NONMETALLIC INCLUSIONS BY cBN CUTTING TOOLS

Research Project

Project/Area Number 09650141
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field 機械工作・生産工学
Research InstitutionHIROSHIMA UNIVERSITY

Principal Investigator

YAMANE Yasuo  HIROSHIMA UNIVERSITY,MECHANICAL ENGINEERING,PROFESSOR, 工学部, 教授 (70140564)

Co-Investigator(Kenkyū-buntansha) NARUTAKI Norihiko  HIROSHIMA UNIVERSITY,MECHANICAL ENGINEERING,PROFESSOR, 工学部, 教授 (10026081)
Project Period (FY) 1997 – 1998
Project Status Completed (Fiscal Year 1998)
Budget Amount *help
¥3,200,000 (Direct Cost: ¥3,200,000)
Fiscal Year 1998: ¥1,300,000 (Direct Cost: ¥1,300,000)
Fiscal Year 1997: ¥1,900,000 (Direct Cost: ¥1,900,000)
KeywordscBN tool / ultra high-speed cutting / nonmetallic inclusions / cast iron
Research Abstract

The aim of this study is to clarify the possibility of ultra-high-speed machining of the cast irons with cBN cutting tool. Ultra-high-speed face milling test tests (up to 4500 m/min) were carried out on several kinds of cast irons using cBN tools with different binders. Tool wear, cutting forces, cutting temperatures and non-metallic inclusions in cast irons adhered on the wear part of the cBN tools were examined.
Results obtained were as follows ;
1. Oxide protective layer consisted from Al, Si, and Mn was observed on the rake face and flank face of cBN tool when machining cast irons with high content of Al203, and the wear of the tool became small when the layer was adhered.
2. The cutting speed at which the protective layer was observed on the tool depended on the content of A1203 in the cast iron, the higher content of A1203 the higher cutting speed. The maximum cutting speed was 4500 m/min at which the protective layer was observed in the tests.
3. Formation of the protective layer depended on the binder of the cBN tool, the layer easily tended to adhered on the tool with ceramic binder including TiC, because TiC was oxidized easily and to combine with other oxides.
4. In the process of clarifying the bonding mechanisms of cBN tools and the protective layer, it was clarified that boron nitride BN had the effect of making AlN from Al in work material, and the AIN adhered on the tool acted as a very stable protective layer. The results were presented at an International Conference.

Report

(3 results)
  • 1998 Annual Research Report   Final Research Report Summary
  • 1997 Annual Research Report
  • Research Products

    (3 results)

All Other

All Publications (3 results)

  • [Publications] Yasuo YAMANE: "New Suppressive Mechanisms of Tool Wear by Boron Nitride" Proc.of Int.Con.on Behaviour of Materials in Machining 12-13 Nov.,Stratford-upon-Avon,1998. 23-32 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Yasuo Yamane: "New Suppressive Mechanisms of Tool Wear by Boron Nitride" Proc.of Int.Con.on Behavior of Materials in Machining 12-13 Nov., Stratford-upon-Avon. 23-32 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Yasuo Yamane: "New Suppressive Mechanisms of Tool Wear by Boron Nitride" Proc.of Int.Con.on Behaviour of Materials in Machining 12-13 Nov.,Stratford-upon-Avon,1998. 23-32 (1998)

    • Related Report
      1998 Annual Research Report

URL: 

Published: 1997-04-01   Modified: 2016-04-21  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi