【英文标准名称】:StandardTestMethodforErosionofSolidMaterialsbyaCavitatingLiquidJet
【原文标准名称】:用气蚀喷液法测试固体材料腐蚀的标准试验方法
【标准号】:ASTMG134-1995(2006)
【标准状态】:现行
【国别】:
【发布日期】:1995
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:G02.10
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:固体材料;侵蚀;试验;气蚀;腐蚀;固态材料;气蚀喷液;流体气蚀
【英文主题词】:cavitatingjet;cavitation;cavitationerosion;erosionbyliquids;erosionofsolids;erosiontest;flowcavitation
【摘要】:1.1Thistestmethodcoversatestthatcanbeusedtocomparethecavitationerosionresistanceofsolidmaterials.Asubmergedcavitatingjet,issuingfromanozzle,impingesonatestspecimenplacedinitspathsothatcavitiescollapseonit,therebycausingerosion.Thetestiscarriedoutunderspecifiedconditionsinaspecifiedliquid,usuallywater.Thistestmethodcanalsobeusedtocomparethecavitationerosioncapabilityofvariousliquids.1.2Thistestmethodspecifiesthenozzleandnozzleholdershapeandsize,thespecimensizeanditsmethodofmounting,andtheminimumtestchambersize.Proceduresaredescribedforselectingthestandoffdistanceandoneofseveralstandardtestconditions.Deviationfromsomeoftheseconditionsispermittedwhereappropriateandifproperlydocumented.Guidanceisgivenonsettingupasuitableapparatus,testandreportingprocedures,andtheprecautionstobetaken.Standardreferencematerialsarespecified;thesemustbeusedtoverifytheoperationofthefacilityandtodefinethenormalizederosionresistanceofothermaterials.1.3Twotypesoftestsareencompassed,oneusingtestliquidswhichcanberuntowaste,forexample,tapwater,andtheotherusingliquidswhichmustberecirculated,forexample,reagentwaterorvariousoils.Slightlydifferenttestcircuitsarerequiredforeachtype.1.4ThistestmethodprovidesanalternativetoTestMethodG32.Inthatmethod,cavitationisinducedbyvibratingasubmergedspecimenathighfrequency(20kHz)withaspecifiedamplitude.Inthepresentmethod,cavitationisgeneratedinaflowingsystemsothatboththejetvelocityandthedownstreampressure(whichcausesthebubblecollapse)canbevariedindependently.1.5ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:A29
【国际标准分类号】:19_060
【页数】:14P.;A4
【正文语种】: