摘要
针对Inconel 718加工时,切削效率低和刀具磨损严重,通过角正交试验对Sialon陶瓷刀具超高速切削Inconel 718的刀具寿命及磨损机理进行了研究,同时利用等效率-等寿命响应曲面法,对切削参数进行了优化,获得了干切削状态下刀具寿命的经验公式,得到陶瓷刀具超高速切削Inconel718主要的磨损机理是粘结磨损和磨粒磨损,在效率不变的情况下,适当的降低切削速度,增大切削深度,可以提高刀具寿命,试验刀具的切削参数优化结果为:切削速度150～250 m/min、切削深度0.05～0.2 mm、进给量0.1～0.2 mm,在该建议切削参数下刀具寿命约在5～20 min.
Inconel 718 is a difficult to machine alloy with low cutting efficiency and server tool wear.A series of orthogonal turning tests with sialon ceramic tools in ultra high speed scale was carried out to study tool life and wear mechanism.At the same time,the cutting parameters were optimized based on tool life-efficiency contour analysis.The experiential functions of tool life were developed.The main wear mechanisms of sialon ceramic tool involve adhesion and abrasion.In the same cutting efficiency,the higher cutting speed and small depth of cut are the better selection.For the selested tool,the optimized cutting parameter are cutting speed 150～250 m/min,depth of cut 0.05～0.2 mm,feed rate 0.1～0.2 mm,and the predictve tool life is about 5～20 min in this cutting condition.
出处
《哈尔滨理工大学学报》
CAS
北大核心
2011年第1期9-12,共4页
Journal of Harbin University of Science and Technology
基金
国家重点基础研究发展计划(2009CB724402)
国家自然科学基金(50875156)
高等学校博士学科点专项科研基金(20090131110030)
