hottube是什么意思tube在线翻译读音例

SteelTubing

Itisimpossibletogointodetailsabouteverytypeandshapeandgradeofsteel

refartoomany,and

availabilitywillvarygreatlydependingonlocationandmanufacturer/supplier.

Thatsaid,oneofthemostoftenused,mostoftenaskedabout,andmostoften

misunderstoodproductsweuseisthevenerableroundsteeltubing.

Ro

anideaofthecommonindustrysizes(insidediameter(ID),outsidediameter(OD),

andwallthickness)browsethesupplycatalogueofyourlocalsupplierorcheckthe

hdatabaseHEREandespeciallyHERE.

NotethatroundsteelmechanicaltubingisNORMALLYorderedandsuppliedbased

stheresultoftheseformer2specs.

Therearehoweversomeexceptionstothis-mostnotablyintrueseamlesstubing.

HerearesomeFlash™graphicsofthedifferentsteeltubeformingprocessesthatI

snaggedfromtheexcellentSteelTubeInstituteofNorthAmericawebsite.

Contnuous(buttwelded)pipeprocess.

Thecontinuousprocessproducesafullrangeofpipesizesfromonlyafewdifferent

lsofskelp,orstrip,arefedintothemillandtheirends

ippassesthroughapre-heater

tedstripisshapedintoanarcofabout270°ina

nozzleappliesoxygen

pipe\'thencut

tolength,reducedtotherequire歌曲《送别》儿童独唱 dsizeinasizingmillandwater-cooledbeforebeing

enreadyforfinishing

TypicalElectricResistanceWeldedtubeprocess

Steelstripisunwoundfromcoilsandside-trimmedtocontrolwidthandcondition

ipthenpassesthroughaseriesofcontouredrolls

esareforcedtogether

underpressureandweldedbyheatingthesteeltotemperaturesbetween

2200°Fand2600°

flashisremovedfromthetheinsideandoutsidesurfacesofthenewly-formedpipe,

andtheweldzoneisheattreatedtoensurehomogeneitybetweenthebasemetal

dissubjectedtoin-linenondestructivetesting,andthetubethen

pass

thenstraightenedandcuttothedesiredfinishedlength.

DOMtubebeingconstructed,startingasERWandthenbeingdrawnoveramandrel.

ThemanufacturingprocessforDOMtubingbeginswithcoilsofsteel,whichareslit

ipiscoldformedandpassed

through箪食瓢饮是什么意思 anelectricresistancewelderwhichjoinstheedgestogether,under

pressure,estingtheweld\'sintegrity,thetubing

iscuttolengthforfurtherprocessing

Seamlesstubeconstruction

Theproductionprocessforseamlesstubebeginsbyheatingasteelbillettoabout

2250°-hotbilletisrotatedanddrawnbyrollsoverapiercingrod,

ionoftherollscausesthemetaltoflowoverandaboutthe

eheating,theshellismovedforward

overasupportbarandishot-rolledinseveralreducing/sizingstandstothedesired

e,whichhasgrownsignificantlyinlength

duringthepiercingandsizingprocesses,isthencutintosectionsandconveyed

receiveswhateverfinishing

processesareneededtomeetcustomerrequirements.

Steeltubingisusuallysuppliedinoneofthefollowingforms:

SeamlessTube.

Tthecommonlyused(and

misreferenced)DOMtubing,asDOMtubingdoesindeedhaveaseam(albeit,almost

invisible-moredetailsbelow).Trueseamlesstubingisuncommonin4x4and

amlessbecauseitismanufacturedbyaprocessknowas

\"extrusion\"whereasolidbarofsteelispierceddownthecenterwithadie,at

unthinkablepressures,cesslookssimilartohowhollow

pasta(macaronietc)re2sub-typesofseamlesstube:

ColdDrawnSeamless(CDS)ionsand

producedtostandarddimensionaltolerances(thisdiffersfrommostothertypesof

tubingexceptDOM).ItisnormallymadefromSAE1018andisconsideredgood

quality.

HotFinishedSeamless(HFS)Tubeislowerincostthancolddrawnandmost

applicablewhereprecisedimensionsandsurfacequalityareofsecondary

ldimensionsfromSAE1026steeland

isscaly,lessdependableandnotasstrongascolddrawntube.

ElectricResistanceWelded(ERW)Tube

producedbytakingaflatbarofsteelandrollingitintoatubeshape(picturerolling

upanewspaper-butwithoutanyoverlap)andthenweldingtheseam-by,you

icresistanceweldingis

somewhatlikealong,\'softencomputercontrolledand

ormallySAE1010(forwallthickness<16ga)orSAE

ecomesin2flavours:

HotRolledERW(府的组词 HREW)

HREWisrolledintoatubeatelevatedtemperatures,usuallywayaboveroom

oducesatubingthatismoremalleableandthereforeeasierto

formbutthatisalsonotasstrong,issuppliedcoveredwithscale,andnotasuniform

soquiteabitcheaperthancoldrolled.

ColdRolledERW(CREW)

CREWismanufacturedbyaprocessinwhichasteelbarisrolledintoatubeandthe

seamwelded,edtohotrolled,CREWis

stronger-(greateryieldstrength)-becauseoftheimprovementinthecrystallattice

structurefromimprovedgrainsize,shape,andorientationimpartedbybeing

workedatcold(room)temperatures),straighter,hasamuchsmootherandmore

uniformsurfacefinish,andismadetomuchtighter,

isthebesteconomicalchoicefortubework,andbecauseofthebettersurfacefinish

andtighterdimensionaltolerancesitismuchnicertoworkwiththanHREW.

DrawnOverMandrel(DOM)

Strongandwell-finishedDOMisanelectricresistanceweldedtubetestedfor

ocess

impartssignificantlyimprovedmechanicalpropertiestothetube,duetothecold

nsideredahighqualitytube,andisnormallyconstructed

at,technicallyDOMreferstotheprocessby

cally,DOMis

notatypeofsteeltube,tenhappenthough-incommon

usethetermhasbecomeacceptedtomeanaspecifictypeoftubingratherthana

case,whenpeoplesay\"DOM\"theynormallymeananERWtube

drawnoveramandrelat(closeto)roomtemperatureandmadefromSAE1020

whattheSteelTube

InstituteofNorthAmericahastosayaboutDOM:

TheDOMManufacturingProcess

ThemanufacturingprocessforDOMtubingbeginswithcoilsofsteel,whichareslit

ipiscoldformedandpassed

throughanelectricresistancewelderwhichjoinstheedgestogether,under

pressure,estingtheweld\'sintegrity,thetubing

iscuttolengthforfurtherprocessing.

Thecold-drawingprocesscreatesauniform,precisionproductwithsubstantially

improvedtolerances,surfacefinishandtens任重道远是什么意思 ilestrength,increasedhardnessand

process,thetubeiscleanedandannealed,andoneendof

eachlengthissqueezedtoapointsoitcanbegrippedbythedrawingmechanism.

duces

thediameterofthetubeandthinsitswallstotherequireddimensionsina

controlledfashiontoprovidethequalitiesdesiredinthefinishedproduct.

Metallurgically,drawingimprovesthetube\'sconcentricity,tensilestrength,

imensionalaccuracyisachievedthroughtight

controlofbothoutsideandinsidediameters.[10]

AlloySteelTubing

Isnotreallyadifferenttypeoftubing,asitwillbemanufacturedbyoneoftheabove

describedmethods,usuallybyextrusion,

ly

referredtoaschrom-molytube-ithasverystrictweldingprocessandpost-welding

opinionthatitcan

(should)onlybeTIGorOxy-Acetylenewelded,andthenonlyifproperstress

opleMIGwelditallthetime,andyou

cansafelydoso-BUT-whatyouhaveintheendisasuperiortubewithaninferior

weldjointwhichreducestheoverallstrengthofwhateveryoufabricatedtothe

weakestlink(theweldinthiscase)andsoyouhaveaveryexpensivestructurethat

isnobetteroverallthanonemadefrom1020DOM.

Exactchemicalcontent,heattreatment,physicalproperties,productionmethodand

thereforemechanicalpropertieswillvaryfromonesuppliertothenext,evenfor

seeminglysimilarlynamedproducts-thewisefabricatordouble-checksall

entsupplierswillalsohave

mple,Ryerson-Tull,oneofNorthAmerica\'s

largestsupplierslistintheircatalogueofsteeltubingbetween1\"and2\'OD,the

followingtypes(notallavailableinallsizes):

CDS,HFS,DOM,ERW,andaproprietaryproducttheycall\"Ry-Star512Extra\".

Man剑客古诗带拼音 ysupplierswillhavesuchspecialproprietaryproducts-youwillhavetocheck

withyoursupplierforitsproprietaryproductpropertiesandspecs.

Onethingthathastobewatchedoutforisthattheindustrybendsalotofcarbon

steeltubingtomakelotsofthingsandsomostcarbonsteeltubingisavailableinthe

annealedcondition—woetohimwhodoesnotdetectitbeforehebuildsthepart.I

haveaverygoodfriendwhooncegotanentirerollcagecut,bent,fittedand关于秋雨的诗词佳句 tacked

b

otherthingthatwedon\'twantis\"freemachiningtubing.\"Icurrentlyuseround

carbonsteelDOMmechanicaltubingformostthingsotherthansuspensionlinks

(thereIuseE4130Nandstressrelieveandheattreatafterwelding).ForrollcagesI

wanttoknowabouthot-finishedtubing

enoughtorememberthedayswhen

terofprinciple

(or,possibly,stubbornness)IdonotuseERWorbuttweldedtubeontheracecar;

although,since秋风词简谱 itisalotcheaper,Iuseitalloverthetrailerandtheshop.[11]

Mypersonalmantraonthesubjectofsteeltubingchoicefor4x4sandrockcrawler\'s

is:

\"Youcan\'tgowrongwith1020DOM!\"