中国机械工程
中國機械工程
중국궤계공정
CHINA MECHANICAl ENGINEERING
2013年
19期
2557-2561
,共5页
田欣利%李富强%王朋晓%王龙%唐修检
田訢利%李富彊%王朋曉%王龍%唐脩檢
전흔리%리부강%왕붕효%왕룡%당수검
激光加热辅助引弧微爆炸加工%Si3N4 陶瓷%温度场%有限元仿真
激光加熱輔助引弧微爆炸加工%Si3N4 陶瓷%溫度場%有限元倣真
격광가열보조인호미폭작가공%Si3N4 도자%온도장%유한원방진
laser assisted micro-detonation machining with striking arc%Si3N4 ceramics%temper-ature field%finite element simulation
介绍了激光加热辅助引弧微爆炸加工技术,建立了温度场数学模型,使用有限元分析软件计算出了加工Si3 N4陶瓷时的温度场分布,并研究了工艺参数对温度场的影响。仿真结果表明:用激光加热辅助引弧微爆炸加工使加工温度得到提高,从单独使用引弧微爆炸加工的12600℃提高到14381℃;其最高温度随着激光功率的增大而升高,随光斑尺寸的增大而减小,随激光加热点距引弧微爆炸加工点距离的增大先增大后减小,随进给速度的增大而减小。研究结果为揭示激光加热辅助引弧微爆炸加工机理和选择合理工艺参数提供了理论依据。
介紹瞭激光加熱輔助引弧微爆炸加工技術,建立瞭溫度場數學模型,使用有限元分析軟件計算齣瞭加工Si3 N4陶瓷時的溫度場分佈,併研究瞭工藝參數對溫度場的影響。倣真結果錶明:用激光加熱輔助引弧微爆炸加工使加工溫度得到提高,從單獨使用引弧微爆炸加工的12600℃提高到14381℃;其最高溫度隨著激光功率的增大而升高,隨光斑呎吋的增大而減小,隨激光加熱點距引弧微爆炸加工點距離的增大先增大後減小,隨進給速度的增大而減小。研究結果為揭示激光加熱輔助引弧微爆炸加工機理和選擇閤理工藝參數提供瞭理論依據。
개소료격광가열보조인호미폭작가공기술,건립료온도장수학모형,사용유한원분석연건계산출료가공Si3 N4도자시적온도장분포,병연구료공예삼수대온도장적영향。방진결과표명:용격광가열보조인호미폭작가공사가공온도득도제고,종단독사용인호미폭작가공적12600℃제고도14381℃;기최고온도수착격광공솔적증대이승고,수광반척촌적증대이감소,수격광가열점거인호미폭작가공점거리적증대선증대후감소,수진급속도적증대이감소。연구결과위게시격광가열보조인호미폭작가공궤리화선택합리공예삼수제공료이론의거。
The paper introduced simply the technologies of laser assisted micro-detonation machi-ning with striking arc and established its theoretical model of temperature field.Based on finite ele-ment theory,the temperature field of Si3 N4 ceramics during laser assisted micro-detonation machi-ning with striking arc was simulated with the aid of finite element analysis software.Furthermore, the influence of process parameters on temperature distribution was studied.The simulation results show the highest temperature is enhanced from 12 600℃ to 14 381℃ only with micro-detonation machining with striking arc.The temperature increases with increment of the laser power and decrea-ses with growth of the size of light spot.With the increase of distance between the laser heating point and processing position,the temperature rises firstly and then drops.The effect of feeding speed on temperature is not so outstanding.The simulation results is reliable and can provide theory evidences for uncovering the machining mechanism of laser assisted micro-detonation machining with striking arc and choosing proper process parameters.