航空学报 > 1988, Vol. 9 Issue (9): 495-498

钛合金端铣时硬质合金刀具磨损机理的研究

王珉, 张幼桢   

  1. 南京航空学院
  • 收稿日期:1987-07-28 修回日期:1900-01-01 出版日期:1988-09-25 发布日期:1988-09-25

INVESTIGATION ON WEAR MECHANISM OF CEMENTED CARBIDE TOOL IN MILLING OF TITANIUM ALLOYS

Wang Min, Zhang Youzhen   

  1. Nanjing Aeronautical Institute
  • Received:1987-07-28 Revised:1900-01-01 Online:1988-09-25 Published:1988-09-25

摘要: 在钛合金铣削加工的过程中,伴随着产生各种物理、化学现象,如变形、切削热、切削力、摩擦与磨损等。而它们之间又是相互联系、相互影响、相互作用。同时又以各自独立的物理、化学和机械现象表现出来。因此只有同时从各个方面对它们进行研究,才能深入揭示其本质。弄清其作用机理,从而去指导生产实践。

Abstract: In this paper the tool wear in milling of titanium alloys, the contact length between tool flank and workpiece and the temperature field on the tool flank during milling operation have been studied. The wear mechanism of cemented carbide tools in milling of titanium alloys has been studied. At low speed milling, the major type of the of the tool wear is the adhesion tear wear on the tool flank. However, at high speed milling, the tool wear is mainly caused by diffusion. The evidence of the diffusion of cobalt and carbon in boundary layer between the milling cutter and the workpiece has been obtained. Furthermore it was first revealed that the carbon rich layer was formed in the boundary layer and carbon poor layar was found in the sub-layer under the tool flank as the diffu sion wear took place.