鈦合金Ti6Al4V因其突出的比強(qiáng)度、耐高溫和抗腐蝕性能而廣泛應(yīng)用于航空航天、汽車、生物醫(yī)學(xué)以及化學(xué)領(lǐng)域。但是其低彈性模量、低導(dǎo)熱率以及在高溫下的高強(qiáng)度的特性,導(dǎo)致其機(jī)械加工性較差,進(jìn)而影響工件加工表面質(zhì)量。惡化的表面質(zhì)量會引起工件表面缺陷、初始裂紋、表面過早失效,以及加工費(fèi)用增加等問題。因此,對鈦合金Ti6Al4V加工進(jìn)行研究來獲得合格的表面質(zhì)量是具有重要意義的。加工參數(shù)如切削速度、進(jìn)給率、切削深度等對鈦合金Ti6Al4V加工表面完整性具有很大影響;球頭立銑刀廣泛應(yīng)用于鈦合金的加工中,但是其加工效率控制仍存在問題;因此,本文將對鈦合金Ti6Al4V球頭立銑刀在不同切削速度、進(jìn)給率、切削深度加工條件下形成的表面質(zhì)量包括表面粗糙度、微觀結(jié)構(gòu)、微觀硬度等實(shí)驗(yàn)分析;旨在通過研究來優(yōu)化鈦合金Ti6Al4V球頭立銑刀加工的加工參數(shù),提高表面質(zhì)量。實(shí)驗(yàn)中選定的切削速度分別為151m/min,207m/min和301 m/min,選定的進(jìn)給率為0.1 mm/齒和0.05 mm/齒,切削深度為0.1 mm和0.03 mm。實(shí)驗(yàn)采用12mm直徑的三槽碳化球頭銑刀,其前角為10°,軸向前角為30°。在無潤... 

【文章來源】：上海交通大學(xué)上海市 211工程院校 985工程院校 教育部直屬院校

【文章頁數(shù)】：78 頁

【學(xué)位級別】：碩士

【文章目錄】：
摘要
ABSTRACT
Chapter1 Introduction
    1-1 Background
        1-1-1 Titanium alloy:Ti6Al4V
        1-1-2 Applications of titanium alloys
        1-1-3 Challenges in machining titanium alloys
    1-2 Literature review:Surface integrity
    1-3 Significance/Objective
Chapter2 Experimental research on ball end milling of Ti6Al4V
    2-1 Objective
    2-2 Experimental Design
        2-2-1 Workpiece
        2-2-2 Cutting Tool
        2-2-3 Milling Machine
        2-2-4 Fixture
    2-3 Experimental Procedure
    Summary of this chapter
Chapter3 Milled Surface Integrity
    3-1 Objective
    3-2 Surface roughness measurement and analysis
    3-3 Microstructure Alteration Measurement
        3-3-1 Preparation of Metallographic Specimens
        3-3-2 Measurement and Analysis of the result
    3-4 Microhardness Tests
        3-4-1 Preparation of Metallographic Specimens
        3-4-2 Measurement and Analysis of the results
    3-5 Conclusion and discussion
    Summary of this chapter
Chapter4 Validation and Discussion
    4-1 Analysis of Chips
    4-2 Validation of Surface Roughness
    4-3 Validation of Microstructure
    4-4 Validation of Microhardness
    Summary
Chapter5 Summary and Conclusion
    5-1 Ball end milling experiments
    5-2 Surface roughness
    5-3 Microstructure
    5-4 Microhardness
    5-5 Future Works
References
Acknowledgements



本文編號：3446086