中国农行股票2453(PT2453)

000665股票600069股吧安信证券程定华许昌县一高002313股票中国核电论坛股票600170|大冷股份股票2021年4月28日发(作者：以后15点成交那个数据是什么意思?棕榈股份(002431))

FIG.1ToolforLevelingCaulkingCompoundintheShrinkageTestSpecimen
compoundforatleast5hat2362°C(73.463.6°F).
ureforShrinkageDetermination
9.1Placethebrassringononeoftheground-glassplates.
Determinethevolumeoftheringby?llingitwithdistilled
waterat2362°C(73.463.6°F),
thewaterslowlyfromtheburetintotheringsothatthereare
noairbubblesvisiblewhentheglasscoverplateiscenteredon
theamountofwaterrequiredto?llthe
ringtothenearest0.03mL,asV
r
.
a6-mm
1
(?
4
-in.)layerofcompoundinthering,usingthelevelingtool
toformgoodcontactwithringandstone(Fig.1).Theleveling
toolshould?t?rmlyagainsttheinsidesurfaceoftheringwhile
stilledwaterfromtheburetintothe
ringuntilitisexactly?lled(withoutairbubbles),asdeter-
minedbycoveringwithaground-glassplate(Fig.2).Record
thequantityofwaterneededto?llthering(readingtheburet
toanaccuracyof0.03mL)anddesignatetheamountasV
i
.
9.3Pouroutthewaterfromtheringandplacethespecimen,
atthesamelevelasthetemperaturemeasuringdevice,inan
ovensetat6562°C(14963.6°F)ndofthis
exposureperiodandafterthespecimenhascooledfor2hat
roomtemperature,repeatthe?llingoftheringusingtheburet
andrecordthevolumeofwaterusedasV
f
.
ation
10.1Calculatetheshrinkage,involumepercent,asfollows:
Shrinkage,%5
@~
V
f
2V
i
!

~
V
r
2V
i
!#
3100(1)
where:
V
r
5volumeofring,mL,
V
f
5volumeofwaterrequiredto?llringafter120h
exposure,and
V
i
5volumeofwaterrequiredto?llringbeforeoven
exposure.
ureforTenacityDetermination
11.1Aftertheshrinkagedeterminationhasbeencompleted,
runthepointoftheknifebladealongtheinsideedgeofthering
e
stiffputtyknife,loosenonehalfofthecaulkingpatfromthe
heputtyknifeundertheloosenedportionofthe
compoundandfoldover180°ontotheremainingpartofthe
compound,returntotheoriginalposition,andrepeatthe
operationuntilsixfoldshavebeenmadealongthesameline.
Embrittlementorlackoftenacityisindicatedbybreakingor
crackingofthecaulkinglayeratthecrease.

12.1Shrinkage—Reportthepercentofvolumeshrinkage.
12.2Tenacity—Reportaspassorfail;passagerequiresa
minimumofsixfolds.
ionandBias
13.1Shrinkage—Onthebasisofaroundrobininwhich
FIG.2StagesintheShrinkageTestProcedure

eightlaboratoriestestedtwosamples,the“between-
laboratories”standarddeviationoftheamountofshrinkage,
expressedinpercent,byvolume,
onthisvalueofthestandarddeviation,thefollowingcriteria
shouldbeusedforjudgingtheacceptabilityofresultsatthe
95%con?dencelevel:
13.1.1Repeatability—Nodataatthepresenttime.
13.1.2Reproducibility—Tworesultsobtainedbyoperators
indifferentlaboratoriesshouldbeconsideredsuspectifthey
differbymorethan3.8percentagepoints.
13.2Tenacity:
13.2.1Onthebasisofaroundrobininwhicheight
laboratoriestestedtwosamplesina“pass-fail”test,therewas
aunanimousagreementamongalltheparticipantlaboratories
onthetwosamplestested.
13.2.2Repeatability—Nodataatthepresenttime.
ds
14.1caulkingcompound;?exibility;shrinkage
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fthisstandardareexpresslyadvisedthatdeterminationofthevalidityofanysuch
patentrights,andtheriskofinfringementofsuchrights,areentirelytheirownresponsibility.
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ifnotrevised,mmentsareinvitedeitherforrevisionofthisstandardorforadditionalstandards
mmentswillreceivecarefulconsiderationatameetingoftheresponsible
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“嗯，不小心掉队了。”秦振华接过了话茬，省得刘志刚为难，他接着说道：“来，咱们几个推一把，肯定能上去。” 其实，办法也很简单，现在，草原市天寒地冻，到处都是皑皑白雪，要是到了外面，半米厚的降雪都是有可能的，在市区里，大雪下过之后，路面就会打扫，但是，不可能把雪都清扫干净的，所以，就会堆积到空地上，等到第二年春天，直接化掉就可以了，如果从空中看下去，一机厂的各个厂区里，都是大片大片的白色覆盖的空地的。 “这个，怎么可能，莫非你坐过飞机？”白九鸣说道：“飞机，那可不是好坐的。等我大学毕业，一定有机会坐飞机的。” “哼，真是不要脸啊。”资料室内，几个人正在聊天，一向消息灵通的吴丽敏，正在一边嗑着瓜子，一边和其他人说这件事。 “缸体的热应力，是需要计算的，但是计算总是有误差的，所以我们就得实验。”此时，秦振华正在铸造车间里，和一众的老师傅们进行交流。 当212吉普车在附近停下来的时候，秦振华已经烧完了自己带来的纸钱，然后看着那辆挂着军队牌子的吉普车。