表面技术
錶麵技術
표면기술
SURFACE TECHNOLOGY
2015年
5期
106-110
,共5页
超声深滚%纵-扭复合振动%表面强化%显微硬度
超聲深滾%縱-扭複閤振動%錶麵彊化%顯微硬度
초성심곤%종-뉴복합진동%표면강화%현미경도
ultrasonic deep rolling%longitudinal-torsional vibration%surface strengthening%micro-hardness
目的：基于纵-扭复合振动超声加工和超声深滚加工提出了纵-扭复合振动超声深滚加工工艺，研究各深滚工艺参数对工件表面强度的影响，以验证二维超声振动加工技术在表面强化技术领域的应用效果。方法采用单因素试验法对6061-T651铝合金轴件分别进行纵-扭复合振动超声深滚与常规深滚加工试验，然后用MH-5数显硬度计测试每组参数下的表面显微硬度，研究静压力、工件转速和进给量对工件表面显微硬度的影响，并将两种试验结果进行对比。结果在设定工艺参数内，纵-扭复合振动超声深滚工艺所获得的表面显微硬度均高于同等加工条件下常规深滚工艺。纵-扭复合振动超声深滚加工时，表面显微硬度随静压力和工件转速的增大先增大后减小，随进给量的增大先减小后增大再减小；常规深滚加工时，表面显微硬度与静压力近似呈线性关系，且随工件转速的增大先增大后减小，随进给量的增大一直减小。结论纵-扭复合振动超声深滚加工工艺能更有效地实现6061-T651铝合金的表面强化处理。
目的：基于縱-扭複閤振動超聲加工和超聲深滾加工提齣瞭縱-扭複閤振動超聲深滾加工工藝，研究各深滾工藝參數對工件錶麵彊度的影響，以驗證二維超聲振動加工技術在錶麵彊化技術領域的應用效果。方法採用單因素試驗法對6061-T651鋁閤金軸件分彆進行縱-扭複閤振動超聲深滾與常規深滾加工試驗，然後用MH-5數顯硬度計測試每組參數下的錶麵顯微硬度，研究靜壓力、工件轉速和進給量對工件錶麵顯微硬度的影響，併將兩種試驗結果進行對比。結果在設定工藝參數內，縱-扭複閤振動超聲深滾工藝所穫得的錶麵顯微硬度均高于同等加工條件下常規深滾工藝。縱-扭複閤振動超聲深滾加工時，錶麵顯微硬度隨靜壓力和工件轉速的增大先增大後減小，隨進給量的增大先減小後增大再減小；常規深滾加工時，錶麵顯微硬度與靜壓力近似呈線性關繫，且隨工件轉速的增大先增大後減小，隨進給量的增大一直減小。結論縱-扭複閤振動超聲深滾加工工藝能更有效地實現6061-T651鋁閤金的錶麵彊化處理。
목적：기우종-뉴복합진동초성가공화초성심곤가공제출료종-뉴복합진동초성심곤가공공예，연구각심곤공예삼수대공건표면강도적영향，이험증이유초성진동가공기술재표면강화기술영역적응용효과。방법채용단인소시험법대6061-T651려합금축건분별진행종-뉴복합진동초성심곤여상규심곤가공시험，연후용MH-5수현경도계측시매조삼수하적표면현미경도，연구정압력、공건전속화진급량대공건표면현미경도적영향，병장량충시험결과진행대비。결과재설정공예삼수내，종-뉴복합진동초성심곤공예소획득적표면현미경도균고우동등가공조건하상규심곤공예。종-뉴복합진동초성심곤가공시，표면현미경도수정압력화공건전속적증대선증대후감소，수진급량적증대선감소후증대재감소；상규심곤가공시，표면현미경도여정압력근사정선성관계，차수공건전속적증대선증대후감소，수진급량적증대일직감소。결론종-뉴복합진동초성심곤가공공예능경유효지실현6061-T651려합금적표면강화처리。
ABSTRACT:Objective To propose ultrasonic deep rolling with longitudinal-torsional vibration ( UDR-LTV) based on ultrasonic machining with longitudinal-torsional vibration and ultrasonic deep rolling, and to study the effects of processing parameters on sur-face strengthening, so as to verify the application effect of the two-dimensional ultrasonic vibration machining technology in the field of surface strengthening technology. Methods Conventional deep rolling ( CDR) and UDR-LTV were applied using the single factor experiment to process aluminum alloy 6061-T651 respectively, then the surface micro-hardness was tested by each set of parameters with the MH-5 digital hardness tester to investigate the influence of static pressure, rotate-speed and feed amount on the surface mi-cro-hardness. The results of the two processing ways in the experiment were compared. Results Within the set parameters, the sur-face micro-hardness obtained by UDR-LTV was larger than that of CDR under the same processing conditions. The surface micro-hardness increased at first then decreased with the increase of static pressure and rotate-speed, and decreased at first then increased and decreased at last with the increase of feed amount by UDR-LTV. The surface micro-hardness and static pressure showed an ap-proximate linear relationship, and the surface micro-hardness increased at first then decreased with the increase of rotate-speed, and reduced all along with the increase of feed amount by CDR. Conclusion It is proved that aluminum alloy 6061-T651 may be more effectively strengthened when treated by UDR-LTV.
