纳米氧化锆增韧氧化铝基陶瓷刀具及切削性能研究.doc

内蒙古科技大学本科生毕业论文_______________________________________________________________________________ I 摘要: 本文主要研究了纳米氧化锆增韧氧化铝基陶瓷***: A20Z(c+m) 和A15Zc 切削淬硬 45# 钢、淬硬 T10A 、灰铸铁的切削性能。在给定的条件下,低速和高速情况下,研究在切削深度分别为 、 、 、 时, A20Z(c+m) 和 A15Zc 的切削性能,并探索最适合的切削深度。陶瓷*** A20Z(c+m) 和A15Zc 在切削灰铸铁时, A15Zc ***材料在切削铸铁时比 A20Z(c+m) 有更好的耐磨性,随着切削深度的增大, A20Z(c+m) 和A15Zc 后刀面磨损量也增大。 A20Z(c+m) 和A15Zc 切削灰铸铁时,切削速度 v= n 的条件下,其后刀面磨损量受切削深度的影响不大。高速切削灰铸铁时,A20Z(c+m) 的后刀面磨损量比 A15Zc 要大。陶瓷*** A20Z(c+m) 和A15Zc 在切削淬硬 T10A 时, A20Z(c+m) 在低速条件下切削 T10A ,对于进给量的改变,后刀面磨损量没有受多大影响。A15Zc 在低速 v=31m/min 后刀面磨损量比 A20Z(c+m) 要大。 A15Zc 、A20Z(c+m) 在都不适合在高速下切削 T10A ,且只能给小的切削深度。陶瓷*** A20Z(c+m) 和A15Zc 在切削淬硬 45# 钢时,A20Z(c+m) 陶瓷***在低速下切削 45# 钢,只能在小的切削深度条件下合适切削。 A15Zc 的后刀面磨损量比A20Z(c+m) 要小。低速下切削 45# 钢,A15Zc 也只适合在小的切削深度下切削。关键词: 纳米复合陶瓷***;切削性能;切削深度;磨损机理内蒙古科技大学本科生毕业论文_______________________________________________________________________________ II ABSTRACT This paper has researched the cutting performance of nano-scale ZrO 2 toughening Al 2O 3 matrix ceramics tool materials, such as A15Zc and A20Z(c+m), in machining the hardened 45# steel, the hardened T10A steel and cast iron HT200. Under the low and high speed condition, researching the cutting performance of A15Zc and A20Z(c+m) in four cutting depth that 、 、 、 . And explored the most suitable cutting depth. When cutting cast iron HT200 with the ceramic tools A15Zc and A20Z(c+m), for wear resistance , the A15Zc is better than A20Z(c+m). With the cutting depth increasing, the tool wear rate on flank of A15Zc and A20Z(c+m) would be increased. When cutting cast iron HT200 under the condition that cutting speed is , the tool wear rate on flank of A15Zc and A20Z(c+m) has little effect by cutting depth. Under high cutting speed condition, the tool wear rate on flank of A20Z(c+m) is larger than A15Zc. When cutting hardened T10A steel with the ceramic tools A15Zc and A20Z(c+m), with the low speed condition, the tool wear rate on flank of A20Z