工程陶瓷引弧微爆炸加工冲击力建模及实验分析

张保国; 田欣利; 王健全; 唐修检; 李富强

doi:10.11883/1001-1455(2012)03-0303-06

装甲兵工程学院再制造技术重点实验室,北京100072;

94669部队,安徽芜湖241007

基金项目:

国家自然科学基金项目(51075399,51105378)

详细信息

通讯作者:
张保国

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Modelbuildingandexperimentalanalysisonimpactforce ofmicro-detonationmachiningofstrikingarcforengineeringceramics

ScienceandTechnologyonRemanufacturingLaboratory,

AcademyofArmoredForcesEngineering,Beijing 100072,China;

Funds:

NationalNaturalScienceFoundationofChina(51075399,51105378)

More Information

Corresponding author: ZHANG Bao-guo

摘要: 介绍了引弧微爆炸加工过程中冲击力产生的原因,利用单因素实验确定影响冲击力的主要工艺参数,利用正交实验和回归分析的方法建立了冲击力指数型经验模型,得出工艺参数对冲击力的影响规律。实验结果表明:工作电流、工作气压和微爆炸发生器喷嘴直径是影响冲击力大小的主要工艺参数,冲击力随着工作电流的增大而减小,随着工作气压和喷嘴直径的增大而增大,而工作脉宽和工作距离对冲击力大小影响不显著;建立的冲击力模型与实验结果吻合良好。研究结果可以为引弧微爆炸加工过程的控制提供参考依据。

关键词:

Abstract: Thegenerationcauseofimpactforceduringthemicro-detonationmachiningprocesswasintroduced. Themainprocessingparameterswereconfirmedby meansofsingle-factorexperiments. Basedonaboveparameters,anexponential-typeempiricalmodelforimpactforcewasbuiltbyemployingtheorthogonalexperimentsandtheregressionanalysis. Andtheinfluencesoftheprocessingparametersonimpactforcewereanalyzed. Investigatedresultsdisplaythat:theworkingcurrentandthe workingpressureaswellasthenozzlediameterofthemicro-detonationgeneratorarethemainprocessingparameterstodeterminetheimpactforcemagnitude. Theimpactforcedecreaseswithanincreaseintheworkingcurrentanditincreaseswithincreasesintheworkingpressureandthenozzlediameter. Ontheotherhand,theworkingpulsewidthandtheworkingdistancehaveinsignificantinfluencesontheimpactforcemagnitude. Andtheimpactforcemodelisconsistentwiththeexperimental results.Sotheresearchcanofferanimportantreferencefortheprocesscontrolofmicro-detonation machiningwithstrikingarc.

Key words:

mechanicsofexplosion /
impactforce /
orthogonalexperiment /
micro-detonation machiningofstrikingarc /
engineeringceramics