旋转气流控制激光切割特种钢薄板试验研究

《旋转气流控制激光切割特种钢薄板试验研究》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。

1、上海海事大学硕士学位论文旋转气流控制激光切割特种钢薄板试验研究姓名：米承龙申请学位级别：硕士专业：机械设计及理论指导教师：洪蕾20070601上海海事大学硕士论文：旋转气流控制激光切割特种钢薄板试验研究研究结果为实际应用提供理论与试验依据。关键词：激光切割；粘渣；猝发理论；旋转气流；气流场模拟Ⅱ上海海事大学硕士论文：旋转气流控制激光切割特种钢薄板试验研究ABSTRACTAsanadvancedmethodoffabrication，thelasercuttingprocesshasbeenwidel

2、yusedandbecomeoneofmaturetechnologyinlasermanufacturing，forsuchmeritsasextensivecuttingrange，highcuttingspeed。smallheataffectedzone，highdegreeofaccuracy，flexibilityandSOon．Recently，withthedevelopmentofmodernindustries。therequirementsforindustrialproduc

3、tareaimingtosmallbatch，highaccuracy，highefficiency，smallsizeandlightgage．Lasercuttingexertadequacytechnologyadvantage．Inordertosolvetheslagprobleminlasercuttingcertainspecialsteelandimprovelasercuttingefficiency，cuttingqualityandreducethecostanddevelop

4、moreapplicationfield．Inordertomakeagooduseoflasercuttingtechnologyinoursociety，westilldomoreresearchatincompletepartoflasercuttingtechnology．Atfirst，thepaperintroducesthebasicprinciplesoflasercuttingtechnology，characteristicandcurrentdevelopmentathomea

5、ndabroad．Andthen。itAnalysesthecauseofslag，discussesthebackgroundandsignificanceoftheissue．Italsointroducesthenewmethodandequipment．’Secondly，itiseasytoproducemoltenslagbyusingtraditionallasercuttingtechnologyinlasercuttingsomespecialsteelsuchasstainles

6、ssteelandSOon．ThegoodresultscanbeachievedbyAdoptinghigherpressureandpurityNitrogenorinertgasasassistedgas．ButitneedhigherpurityNitrogenathigherpressureenvironment，theconsumptionofgasismaximum．Further，absencegreatdealofheatenergywhichissupplierbytheoxid

7、ationreactioninducesthepoweroflasercuttingincreasingquickly．Thismethodcausesalotofproblemforthelasercuffingtechnologytofurtherexpandotherapplicationfield．Andthen，theparticularityofspecialsteelbringsagreatin上海海事大学硕士论文：旋转气流控制激光切割特种钢薄板试验研究inconvenienceint

8、helasercuffing．Conventionalprocessisunabletosolvethemoltenslagissue．Afterstudyoftheformingprincipleandtheruleofmoltenslag，afirenewlasercuttingtechnologybyusingcycloneslagseparatorthatwillformrotatinggasflowtocontrolthedirectionoftheflow