摘要
介绍了钛合金及钛合金螺纹孔的成型工艺技术进展,分析了刀具材料、刀具结构等因素对加工工艺的影响。进行了切削加工试验,从刀具材料、结构等方面探讨了解决高强钛合金钻削和攻丝加工过程中存在烧刀、断钻、刀具磨损等问题的途径。对相关切削液进行了分析,并配制了适合高强钛合金加工的切削液。试验结果表明:材料W2Mo9Cr4VCo8制造的刀具和钻头比W18Cr4V、硬质合金(YG8)制造的更适合高强钛合金的钻削和攻丝加工;根据不同的材料尺寸,选用了对刀具的顶角、螺旋角和钻心厚度进行研究,得出合适的刀具结构参数和切削量;对切削液进行研究,得出使用动物脂肪如猪油等,对高强钛合金进行攻丝加工时具有很好的润滑及冷却作用,提高了切削效率,延长了刀具寿命。
The process of titanium alloys threaded holes is introduced. The influence of cutting- tool material and structure to the process technology are analyzed,and many cutting tests are conducted to find out the reasons why knives burning,drill breaking and cutting- tool wearing and other problems appear during the process are investigated from tool material and structure and improving measures are given out. Cutting fluids are discussed and corresponding cutting fluids are prepared. The tests prove that cutting tools and bits made by W2Mo9Cr4VCo8 are better than W18Cr4V and YG8 to the process of cutting and drilling for high strength titanium alloys. Animal fat like lard could improve the lubrication and cooling condition well during tapping process of titanium alloys and increase service life of cutting- tool.
出处
《制造技术与机床》
北大核心
2014年第6期60-64,共5页
Manufacturing Technology & Machine Tool
基金
国家自然科学基金资助(50975212)
关键词
钛及钛合金
钻削
攻丝
冷却液
titanium and titanium alloys
drilling
tapping
cutting fluid
