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ID:38808494
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页数:9页
时间:2019-06-19
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1、4.1SaltmistchamberThechamberforthistestshallbeconstructedofsuchmaterialsthatwillnotinfluencethecorrosiveeffectsofthesaltmist.Thedetailedconstructionofthechamber,includingthemethodofproducingthesaltmistisoptional,providedthat:a.theconditionsinthechamberarewithinthelimitsspecified.b.asufficient
2、lylargevolumewithconstant,homogeneousconditions(notaffectedbyturbulence)isavailable;theseconditionsshouldnotbeinfluencedbythespecimenundertest.c.nodirectsprayimpingesuponthespecimenundertest;d.dropofliquidaccumulatingontheceiling,thewalls,orotherpartscannotdriponthespecimen;e.thechambershallb
3、eproperlyventedtopreventpressurebuild-upandallowuniformdistributionofthesaltmist.Thedischargeendoftheventshallbeprotectedfromstrongdraughtswhichcancausestrongaircurrentsinthechamber.4.1盐雾室为这个测试室应建造这样的材料,这将不影响盐雾的腐蚀作用。 室的详细建设,包括生产盐雾的方法是可选的,但前提是: A.在会议厅内的条件指定的范围内。 B.一个足够大的体积不变,同质化的条件(不动
4、荡影响);这些条件不应该由下试样的影响。 C.没有直接喷投射到被测样本; D.不能滴一滴液体积聚在天花板上,墙壁上,或其他部位的标本; E.庭应适当通风,以防止压力上升,并允许盐雾分布均匀。放电结束的宣泄,应得到保护,从强大的草稿,这可能会导致强大的气流在会议厅内。4.1.1AtomizerTheatomizershallbeofsuchadesignandconstructionastoproduceafinelydivided,wet,densemist.theatomizershallbemadeofmaterialthatisnon-reactivetothesal
5、tsolution.4.1.2Thesprayedsolutionshallnotbere-used4.1.3AirsupplyIfuseismadeofcompressedair,thatairshall,whenenteringtheatomizer,beessentiallyfreefromallimpurities,suchasoilanddust.Meansshallbeprovidedtohumidifythecompressedairasrequiredtomeettheoperatingconditions.theairpressureshallbesuitabl
6、etoproduceafinelydivideddensemistwiththeatomizerused.Toensureagainstcloggingoftheatomizerbysaltdeposition,theairisrecommendedtohavearelativehumidityofatleast85%atthepointofreleasefromthenozzle.Asatisfactorymethodistopasstheairinveryfinebubblesthroughatowercontainingwater,whichshouldbeautomati
7、callymaintainedataconstantlevel.thetemperatureofthiswatershallbenotlessthanthatofthechamber.Theairpressureshallbecapableofadjustmentsothatthecollectionrateasspecifiedin9.2canbemaintained.4.1.1雾化器,雾化器的应这样的设计和建设,以产生一个精细分割,湿,密集的薄雾。雾化器,应即非盐溶液反应的物
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