中国机械工程
中國機械工程
중국궤계공정
CHINA MECHANICAl ENGINEERING
2014年
14期
1847-1851
,共5页
刘嘉%朱栋%万龙凯%朱荻
劉嘉%硃棟%萬龍凱%硃荻
류가%주동%만룡개%주적
电解加工%整体叶盘%阴极设计%流场
電解加工%整體葉盤%陰極設計%流場
전해가공%정체협반%음겁설계%류장
electrochemical machining (ECM )%blisk%cathode design%flow field
在整体叶盘的电解加工中,叶间区域易发生加工意外。通过有限元流场分析发现该区域存在过流面积突变。为了改善该区域流场,设计了一种消除过流面积突变的移动密封阴极结构。改进流场的有限元分析结果表明,移动密封阴极结构显著提升了电解液流场的稳定性。移动密封阴极的电解加工试验结果表明,新型阴极显著提升了加工稳定性,试验件具有较好的加工重复性与表面质量。
在整體葉盤的電解加工中,葉間區域易髮生加工意外。通過有限元流場分析髮現該區域存在過流麵積突變。為瞭改善該區域流場,設計瞭一種消除過流麵積突變的移動密封陰極結構。改進流場的有限元分析結果錶明,移動密封陰極結構顯著提升瞭電解液流場的穩定性。移動密封陰極的電解加工試驗結果錶明,新型陰極顯著提升瞭加工穩定性,試驗件具有較好的加工重複性與錶麵質量。
재정체협반적전해가공중,협간구역역발생가공의외。통과유한원류장분석발현해구역존재과류면적돌변。위료개선해구역류장,설계료일충소제과류면적돌변적이동밀봉음겁결구。개진류장적유한원분석결과표명,이동밀봉음겁결구현저제승료전해액류장적은정성。이동밀봉음겁적전해가공시험결과표명,신형음겁현저제승료가공은정성,시험건구유교호적가공중복성여표면질량。
On the area of blade tip ,it is easy to have processing accident in ECM blisk .By using fi-nite element method ,the flow field of processing areas was analyzed .The results reveal that the change of sectional area in blade tip is significant .In order to improve the flow field stability in blade tip area ,a new slip seal structure cathode was proposed .The flow field with slip seal structure cathode was analyzed by finite element method .The results reveal that flow field stability in blade tip area is enhanced obviously .The continuous processing experiments about blades was carried out to evaluate the processing stability of slip seal structure cathode .T he results show that the processing stability is improved significantly .T he test specimens have batter processing repeatability and surface quality .