Hluav taws xob Resistance Welded steel kav yog ib qho ntawm cov yeeb nkab siv dav tshaj plaws hauv kev tsim kho tshiab niaj hnub thiab kev tsim kho. Lawv cov koob npe nrov yog vim lawv qhov ruaj khov qhov tseeb, cov txheej txheem ntau lawm, thiab tsim nyog rau nruab nrab txoj kab nruab nrab kav dej. Piv nrog rau lwm cov yeeb nkab welded xws li Longitudinal Submerged Arc Welded kav thiab Kauv Submerged Arc Welded kav, ERW kav feem ntau yog tsim los rau ntau qhov sib txawv thiab lub hom phiaj. Kev nkag siab txog lawv lub peev xwm sab nrauv, phab ntsa thickness muaj peev xwm, kev tswj kev sib hloov, thiab cov qauv vuam vuam pab qhia meej tias vim li cas ERW cov kav dej tau xaiv dav rau cov qauv txheej txheem, kev thauj mus los, thiab kev siv tshuab engineering.
Dimensional Range ntawm ERW Steel Pipes
Hom kab uas hla thiab phab ntsa Thickness muaj peev xwm
| Hom yeeb nkab | Hom Sab Nraud Sab Nraud | Hom Phab Ntsa Thickness Range | Txoj kev tsim khoom |
|---|---|---|---|
| ERW | 21.3-660 hli | 1.5-20 hli | Siab - zaus kuj welding |
| LSAW | 406-1422 hli | 6-40 hli | Longitudinal submerged arc vuam |
| SSAW | 219-3500 hli | 5-25 hli | Kauv submerged arc vuam |
Qhov ntau thiab tsawg ntawm ERW kav dej feem ntau yog txiav txim siab los ntawm qhov dav thiab tuab ntawm cov hlau sawb siv hauv kev tsim khoom. Nyob rau hauv cov txheej txheem ERW, kub- dov steel coils tsis tu ncua uncoiled thiab maj mam tsim mus rau hauv ib tug cylindrical zoo los ntawm ib tug series ntawm txoj kev yob. Cov npoo ntawm cov sawb yog ces rhuab los ntawm siab - zaus tam sim no thiab nias ua ke los tsim ib tug longitudinal weld seam.
Vim tias cov txheej txheem tsim siv steel coils ntau dua li cov hlau phaj, ERW kav dej tshwj xeeb yog tsim rau me me thiab nruab nrab diameters. Feem ntau cov khoom lag luam ERW cov kab ntau lawm ua haujlwm tau zoo nyob rau thaj tsam li ntawm 21.3 hli txog 660 hli txheej kab. Phab ntsa thickness feem ntau yog nyob ib ncig ntawm 1.5 hli rau lub teeb structural kav mus txog li 20 mm rau hnyav-lub luag hauj lwm mechanical lossis pipeline applications.
Hauv qhov sib piv, LSAW cov kav dej siv cov phaj hlau tsis yog coils. Lub phaj yog khoov rau hauv ib lub cylindrical zoo thiab welded raws ib tug ncaj seam siv submerged arc vuam. Cov txheej txheem no tso cai rau cov tuam txhab tsim cov kab loj loj thiab cov kav dej tuab, feem ntau tshaj 406 hli inch thiab ncav cuag thicknesses txog 40 hli. SSAW cov kav dej, tsim los ntawm kev sib txuas ntawm cov hlua hlau, muaj txoj kab uas hla loj dua, qee zaum tshaj 3000 mm, ua rau lawv haum rau loj - cov dej xa mus lossis cov kav dej tawm sab nraud.
Txawm hais tias ERW cov kav dej tsis ncav cuag qhov dav dav ntawm SSAW kav, lawv muaj qhov zoo sib xws hauv lawv qhov kev ua haujlwm. Cov txheej txheem txuas ntxiv ua kom cov phab ntsa tuab tuab thiab ua kom nruj dua piv nrog ntau qhov loj - txoj kab uas hla welded yeeb nkab txheej txheem.
Cov yam ntxwv zoo ntawm ERW Pipes
Roundness thiab Dimensional Precision
| Parameter | ERW Pipe Hom Kev Tswj | Kev lag luam tseem ceeb |
|---|---|---|
| Roundness sib txawv | Tsawg dua lossis sib npaug li 0.6% ntawm txoj kab uas hla | Xyuas kom ruaj khov installation |
| Phab ntsa thickness kam rau ua | ± 10% los yog nruj dua | Guarantees lub cev muaj zog |
| Kev ncaj | Tsawg dua lossis sib npaug li 0.2% ntawm cov yeeb nkab ntev | Ua kom yooj yim rau kev sib txuas ntawm cov kav dej |
| Weld seam reinforcement | Feem ntau tsawg heev | Txo cov dej ntws tawm sab hauv |
Ib qho ntawm cov txheej txheem tseem ceeb ntawm ERW cov kav dej yog lawv cov qib siab ntawm qhov ntsuas qhov tseeb. Vim hais tias cov hlau sawb maj mam zoo li los ntawm ntau lub yob sawv ntsug, cov yeeb nkab kawg geometry yog nruj tswj. Advanced forming systems tsis tu ncua kho cov yob siab thiab kev sib dhos kom tswj tau qhov sib xws thiab qhov ncaj.
Roundness tswj yog ib qho tseem ceeb tshwj xeeb tshaj yog rau cov kav dej sib dhos thiab cov khoom siv kho tshuab. Lub qhov dej- tswj cov yeeb nkab puag ncig kom ntseeg tau tias muaj kev sib cuag thaum lub sij hawm vuam, ruaj khov gasket sealing, thiab kev sib raug zoo raug thaum lub sij hawm tsim cov kav dej. Hauv ntau ERW cov kab ntau lawm, qhov sib txawv ntawm qhov sib txawv yog feem ntau khaws cia li ntawm 0.6 feem pua ntawm cov kab sab nraud, uas yog suav tias yog tus qauv siab tshaj plaws hauv kev tsim cov yeeb nkab.
Phab ntsa thickness uniformity yog lwm yam tseem ceeb. Txij li thaum ERW cov kav dej los ntawm cov kav hlau tiaj tiaj nrog kev tswj cov tuab, cov yeeb nkab phab ntsa tseem zoo ib yam thoob plaws hauv cheeb tsam. Qhov no txawv ntawm qee qhov loj - txoj kab uas hla spiral welded kav uas tsim cov duab geometry tuaj yeem qhia me ntsis kev hloov pauv hauv cov thickness faib raws cheeb tsam kauv seam.
Kev ncaj ncees kuj tau ua tib zoo saib xyuas thaum lub sijhawm ERW ntau lawm. Tom qab vuam, cov kav dej feem ntau dhau los ntawm qhov loj me thiab qhov chaw ncaj ncaj uas kho qhov me me cuam tshuam los ntawm kev sib sau thiab vuam kub. Qhov tshwm sim yog cov yeeb nkab uas tswj tau qhov sib npaug ntawm cov axis, uas yooj yim rau kev thauj mus los, khaws cia, thiab kev teeb tsa.
Weld Seam Structure thiab Mechanical Behavior
Longitudinal Weld Seam Yam ntxwv
Hauv ERW cov kav dej, lub vuam seam khiav longitudinally raws cov yeeb nkab axis. Tsis zoo li submerged arc vuam txheej txheem uas ntxiv cov hlau muab tub lim, ERW vuam cia siab rau cov cua sov ua kom sov thiab forging siab los tsim kom muaj cov khoom ruaj khov- lub xeev daim ntawv cog lus ntawm cov npoo ntawm cov hlau sawb. Qhov tsis muaj cov hlau muab tub lim ua rau thaj chaw nqaim weld thiab cov hlaws zoo sib xws.
Weld seam yog feem ntau raug rau kev kho cua sov ntxiv los yog hauv online seam normalization los kho cov microstructure thiab xyuas kom meej tias thaj chaw weld muaj cov khoom siv sib piv rau cov khoom siv hauv paus. Tom qab vuam, feem ntau cov kav dej ERW tsis muaj -kev kuaj kev puas tsuaj xws li kev tshuaj xyuas ultrasonic lossis kev ntsuas tam sim no txhawm rau txhawm rau txheeb xyuas qhov muaj peev xwm seam tsis xws luag.
Piv nrog rau kauv welded kav, qhov ncaj seam configuration nyob rau hauv ERW kav muaj ib tug luv luv weld ntev txheeb ze rau cov yeeb nkab ncig. Qhov no txhais tau hais tias tag nrho cov welded cheeb tsam me me, uas tuaj yeem pab txhim kho kev ntseeg tau ntawm ntau yam kev siv. Kauv cov kav dej, ntawm qhov tod tes, muaj qhov sib txuas ntev dua vim tias cov seam ua raws li txoj kev helical nyob ib ncig ntawm lub cev yeeb nkab.
LSAW cov kav dej kuj tseem muaj cov kav ntev ntev zoo ib yam li ERW cov kav dej, tab sis txoj kev vuam sib txawv. Submerged arc vuam siv cov xaim xaim thiab flux, ua kom cov hlaws tuab dua thiab nkag mus tob dua. Qhov no tso cai rau LSAW cov kav dej los tuav cov phab ntsa tuab dua thiab siab dua, uas yog vim li cas lawv feem ntau siv rau hauv loj - txoj kab uas hla roj thiab roj xa mus.
ERW kav, los ntawm qhov sib piv, ua tau zoo nyob rau hauv nruab nrab txoj kab uas hla daim ntaub ntawv uas qhov tseeb qhov tseeb, ntau lawm efficiency, thiab tus nqi tswj yog ib qho tseem ceeb. Lawv cov weld seam geometry tsim ib qho chaw sab hauv nrog lub zog me me, uas txo qis kev sib txhuam thiab kev sib txhuam poob hauv cov kua dej.
Engineering Applications Raws li Dimensional Characteristics
Cov yam ntxwv ntawm cov kav dej ERW ua rau lawv tshwj xeeb tshaj yog tsim rau kev tsim vaj tsev thiab nruab nrab - cov kav dej siab. Hauv kev tsim vaj tsev, ERW cov kav dej feem ntau siv los ua cov kab ke, cov tswv cuab truss, thiab kev txhawb nqa txhua yam vim tias lawv qhov ntev ntev tso cai rau kev kwv yees kev thauj khoom thiab kev tsim khoom yooj yim.
Hauv cov haujlwm engineering hauv nroog, ERW cov kav dej tau siv dav hauv cov kav dej, cov kav dej xa hluav taws xob, thiab kev tiv thaiv hluav taws. Lawv qhov nruab nrab txoj kab uas hla zoo sib xws nrog cov kav dej hauv nroog loj, thaum lawv qhov chaw hauv nruab nrab pab tswj cov dej ntws zoo.
Hauv kev lag luam hluav taws xob, ERW cov kav dej feem ntau yog siv rau hauv kev sib sau cov kav dej thiab cov chaw ua haujlwm uas cov diameters feem ntau nyob hauv qab ntawm cov kav xa dej loj. Kev sib xyaw ua ke ntawm kev tswj qhov ntev, txhim khu kev qha weld seams, thiab cov khoom siv kho tshuab ruaj khov ua rau lawv muaj txiaj ntsig zoo thiab kev daws teeb meem rau ntau cov kav dej sib txuas.
Txawm hais tias lwm hom yeeb nkab xws li LSAW thiab SSAW ua tus thawj ntawm txoj kab uas hla loj heev, ERW cov kav dej tseem tseem ceeb hauv kev lag luam thoob ntiaj teb cov yeeb nkab steel. Lawv qhov sib npaug ntawm qhov sib npaug, cov yam ntxwv ntawm cov qauv zoo, thiab cov txheej txheem tsim khoom muaj txiaj ntsig txuas ntxiv txhawb nqa ntau yam kev siv engineering thoob plaws hauv kev tsim kho vaj tse, kev tsim khoom, thiab kev tsim hluav taws xob.
