消失模铸造内燃机缸体的浇注系统优化设计.pdf

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1、铸造技术VOI-35NO．3·604·F0UNDRYTECHN0L0GYMar．2014消失模铸造内燃机缸体的浇注系统优化设计王新节。王维(1．浙江大学城市学院杭州市先进设计与制造技术重点实验室，浙江杭州310015；2．中国计量学院计量测试X-程学院，浙江杭州3100181摘要：结合消失模铸件凝固仿真数值模拟分析系统，对内燃机缸体的主油道机油铸孔内壁粘砂现象、干式缸套结构缸体冷却水套内壁出现的夹杂和夹砂结疤缺陷进行了铸型典型截面代表性位置采温点的温度场分析：借助扫描电子显微镜和X—ray(液氮制冷硅漂移能谱仪)测试其元素组成和相对含量。采用单侧半开放中注式浇道系统，辅之以顶部分散型溢流小

2、冒口，研究了排量为1～2．5L的四缸发动机无缸套汽油机缸体、四缸干式缸套汽油机缸体、四缸干式缸套柴油机缸体和四缸湿式缸套柴油机缸体的消失模成形技术．其中四缸湿式缸套柴油机缸体消失模铸件实现了大批量生产，铸件合格率达到92．0％。关键词：内燃机缸体；消失模工艺；浇注系统设计；凝固仿真中图分类号：TG249文献标识码：A文章编号：1000．8365(2014)03．0604—05InternalCombustionEngineCylinderBlockLostFoamCastingGatingSystemOptimizationDesignWANGXjneWANGWei(1．KeyLabora

3、toryofHangzhouAdvancedDesign＆ManufacturingTechnology，ZhejiangUniversityCityCollege，Hangzhou310015，China；2．CollegeofMetrology&MeasurementEngineering，ChinaJiliangUniversity，Hangzhou310018，China)Abstract：Combinationoflostfoamcastingsolidificationsimulationandnumericalsimulationanalysissystemandthetem

4、peraturefieldanalysisoftypicalsectionofmoldtemperaturepointloc~ions，thephenomenonofmainoilpassageholewalladheringsandofinternalcombustionenginecylinderblockcasting，drycylinderlinercylindercoolingwaterjacketwallinclusionandthescabdefecthasbeeninferred．BymeansofscanningelectronmicroscopeandX—rayrliq

5、uidnitrogencooledsilicondriftspectrometer)totestitselementalcompositionandrelativecontent，theanalysisofitscauses，andputforwardthesolution．AdoptunilateralIntermediateinjectionsemiopenediMnnersystem，supplementedbythetopdispersiontypeoverflowsmallriser．formingtechnologyofEPCof1．0～2．5Literfourcylinder

6、linerfreegasolineenginecylinderlinerblock，fourcyiinderdrycylinderlinergasolineenginecylinderblock，fourcylinderdrydieselenginec~inderlinerandfourcylinderwetcylinderlinerdieselengineblockhasbeenstudiedandexperimented，thefourcylinderwetcylinderdieselenginecylinderblockcastingscanrealizemassproduction

7、．overallyield92．0％&comprehensivecastingyield92．0％．Keywords：internalcombustionenginecylinderblock；lostfoamtechnology；gatingsystemoptimizationdesign；solidificationsimulation；energyspectrumanalysis缸体的气缸内表面在高温下工作，发动机