Kab lig kev cai hydraulic siv ib qho flared kawg, feem ntau tsim los rau SAE-J525 lossis ASTM-A513-T5 cov qauv, uas nyuaj kom tau txais hauv tsev.OEMs tab tom nrhiav rau cov neeg xa khoom hauv tsev tuaj yeem hloov cov yeeb nkab uas tsim los rau SAE-J356A specification thiab kaw nrog O-ring ntsej muag seals raws li qhia.Ib txoj kab ntau lawm.
Editor's Note: Cov kab lus no yog thawj zaug hauv ob ntu ntawm kev ua lag luam thiab kev tsim cov kua hloov kab rau kev siv siab.Thawj ntu tham txog cov xwm txheej ntawm cov khoom siv hauv tsev thiab txawv teb chaws rau cov khoom siv pa.Tshooj thib ob tham txog cov ntsiab lus ntawm cov khoom lag luam tsawg dua tsom rau ntawm lub khw no.
Tus kab mob COVID-19 tau ua rau muaj kev hloov pauv tsis txaus ntseeg hauv ntau qhov kev lag luam, suav nrog cov kav hlau xa khoom thiab cov txheej txheem tsim cov yeeb nkab.Txij thaum kawg ntawm 2019 txog rau tam sim no, kev lag luam steel yeeb nkab tau hloov pauv loj hauv kev tsim khoom thiab kev lag luam logistics.Ib lo lus nug dhau mus ntev tau nyob hauv nruab nrab ntawm kev mloog.
Tam sim no cov neeg ua haujlwm tseem ceeb dua qub.Tus kab mob kis thoob ntiaj teb yog kev kub ntxhov rau tib neeg thiab qhov tseem ceeb ntawm kev noj qab haus huv tau hloov qhov sib npaug ntawm kev ua haujlwm, lub neej thiab kev lom zem rau feem ntau, yog tias tsis yog tag nrho.Tus naj npawb ntawm cov neeg ua haujlwm txawj ntse tau poob qis vim nyiaj laus, tsis muaj peev xwm ntawm qee cov neeg ua haujlwm rov qab mus rau lawv txoj haujlwm qub lossis nrhiav haujlwm tshiab hauv tib lub lag luam, thiab ntau lwm yam.Nyob rau thaum ntxov ntawm kev sib kis, kev ua haujlwm tsis txaus feem ntau yog nyob rau hauv kev lag luam uas tso siab rau cov haujlwm ua ntej, xws li kev kho mob thiab khw muag khoom, thaum cov neeg ua haujlwm tsim khoom tau so haujlwm lossis lawv cov sijhawm ua haujlwm tau txo qis.Cov neeg tsim khoom tam sim no muaj teeb meem nrhiav neeg ua haujlwm thiab khaws cov neeg ua haujlwm, suav nrog cov neeg ua haujlwm paub txog cov kav dej.Kev tsim cov yeeb nkab feem ntau yog txoj haujlwm xiav-dab tshos uas yuav tsum tau ua haujlwm hnyav hauv huab cua tsis muaj kev tswj hwm.Hnav cov cuab yeej tiv thaiv tus kheej ntxiv (xws li lub qhov ncauj qhov ntswg) kom txo tau tus kab mob thiab ua raws li cov cai ntxiv xws li tswj qhov deb 6-taw.Tawm deb ntawm lwm tus, ntxiv kev ntxhov siab rau txoj haujlwm uas twb muaj kev ntxhov siab lawm.
Kev muaj cov hlau thiab cov nqi ntawm cov khoom siv hlau kuj tau hloov pauv thaum muaj kev sib kis.Hlau yog cov khoom kim tshaj plaws rau feem ntau cov kav dej.Feem ntau, cov hlau tso nyiaj rau 50% ntawm tus nqi ntawm ib txoj kab ncaj nraim ntawm cov kav dej.Raws li lub quarter thib plaub ntawm 2020, tus nqi nruab nrab ntawm peb lub xyoos ntawm cov khoom siv txias txias hauv Teb Chaws Asmeskas yog kwv yees li $ 800 toj ib tuj.Cov nqi tau dhau los ntawm lub ru tsev thiab yog $ 2,200 ib tuj thaum kawg ntawm 2021.
Tsuas yog ob yam no yuav hloov pauv thaum muaj kev sib kis, cov neeg ua si hauv cov yeeb nkab yuav ua li cas?Cov kev hloov pauv no cuam tshuam dab tsi ntawm cov yeeb nkab xa khoom, thiab cov lus qhia zoo li cas rau kev lag luam hauv kev kub ntxhov no?
Ntau xyoo dhau los, tus thawj coj ntawm cov yeeb nkab uas muaj kev paub dhau los tau hais txog nws lub luag haujlwm hauv kev lag luam: "Ntawm no peb ua ob yam: peb ua cov kav dej thiab peb muag lawv."ntau qhov muag plooj lub tuam txhab cov txiaj ntsig tseem ceeb lossis teeb meem ib ntus (lossis tag nrho cov no tshwm sim tib lub sijhawm, uas feem ntau yog qhov teeb meem).
Nws yog ib qho tseem ceeb kom tau txais thiab tswj xyuas los ntawm kev tsom mus rau qhov tseem ceeb: cov yam ntxwv uas cuam tshuam rau kev tsim khoom thiab muag cov kav dej zoo.Yog tias lub tuam txhab kev siv zog tsis tau tsom mus rau ob txoj haujlwm no, nws yog lub sijhawm rov qab mus rau qhov pib.
Raws li tus kab mob kis thoob qhov txhia chaw, qhov kev thov rau cov kav dej hauv qee qhov kev lag luam tau poob rau zero.Lub tuam txhab tsheb thiab tuam txhab lag luam hauv lwm qhov kev lag luam uas tau suav tias yog me me tsis ua haujlwm.Muaj ib lub sijhawm uas muaj ntau yam hauv kev lag luam tsis tsim lossis muag cov kav dej.Cov yeeb nkab kev lag luam tseem muaj nyob rau tsuas yog ob peb lub lag luam tseem ceeb.
Hmoov zoo, tib neeg tab tom xav txog lawv tus kheej txoj kev lag luam.Qee tus neeg yuav khoom lub tub yees ntxiv rau kev khaws khoom noj.Tsis ntev tom qab ntawd, kev lag luam vaj tsev tau pib tuaj tos thiab tib neeg nyiam yuav ob peb lossis ntau yam khoom siv tshiab thaum yuav tsev, yog li ob qho tib si kev txhawb nqa kev thov rau cov kav dej me me.Kev lag luam khoom siv ua liaj ua teb tab tom pib rov zoo, nrog ntau thiab ntau tus tswv xav tau cov tsheb laij teb me lossis cov nyom nyom nrog xoom kauj.Kev ua lag luam tsheb tom qab ntawd rov pib dua, txawm hais tias ntawm qhov qeeb qeeb vim qhov tsis txaus ntawm cov nti thiab lwm yam.
Rice.1. SAE-J525 thiab ASTM-A519 cov qauv yog tsim los ua kev hloov pauv tsis tu ncua rau SAE-J524 thiab ASTM-A513T5.Qhov sib txawv tseem ceeb yog SAE-J525 thiab ASTM-A513T5 yog welded es tsis txhob seamless.Cov teeb meem ntawm kev yuav khoom, xws li lub sijhawm xa khoom rau lub hlis, tau tsim cov hauv kev rau ob qho khoom siv tubular, SAE-J356 (muab raws li lub raj ncaj) thiab SAE-J356A (muab raws li lub raj hloov tau), uas ua tau raws li ntau qhov kev xav tau. raws li lwm yam khoom.
Kev ua lag luam tau hloov pauv, tab sis kev coj noj coj ua tseem zoo li qub.Tsis muaj dab tsi tseem ceeb tshaj li kev tsom mus rau kev tsim thiab muag cov kav dej raws li kev xav tau ntawm kev lag luam.
Cov lus nug ua-lossis-yuav tshwm sim thaum kev tsim khoom ntsib cov nqi zog ntau dua thiab kho lossis txo cov peev txheej sab hauv.
Kev tsim khoom tam sim ntawd tom qab vuam cov khoom siv yeeb nkab yuav tsum muaj cov peev txheej tseem ceeb.Nyob ntawm qhov ntim thiab ntau lawm ntawm cov hlau zeb, nws yog qee zaum pheej yig los txiav cov strips dav sab hauv.Txawm li cas los xij, kev sib txuas sab hauv tuaj yeem ua lub nra hnyav rau kev ua haujlwm, cov peev txheej rau cov cuab yeej, thiab tus nqi ntawm cov khoom lag luam broadband.
Ntawm ib sab, txiav 2,000 tons hauv ib hlis thiab khaws 5,000 tons ntawm cov hlau siv nyiaj ntau heev.Ntawm qhov tod tes, yuav txiav-rau-dav hlau ntawm ib lub sijhawm-hauv-lub sijhawm yuav tsum tau nyiaj me ntsis.Qhov tseeb, vim tias cov chaw tsim khoom siv yeeb nkab tuaj yeem sib tham txog cov ntsiab lus ntawm cov nyiaj qiv nrog lub tshuab txiav, nws tuaj yeem cuam tshuam cov nqi nyiaj ntsuab.Txhua lub yeeb nkab zeb yog qhov tshwj xeeb hauv qhov no, tab sis nws muaj kev nyab xeeb los hais tias yuav luag txhua lub tuam txhab cov yeeb nkab tau cuam tshuam los ntawm COVID-19 kev kis thoob qhov txhia chaw ntawm cov neeg ua haujlwm txawj ntse, cov nqi hlau thiab cov nyiaj ntsuab ntws.
Tib yam mus rau cov yeeb nkab tsim nws tus kheej, nyob ntawm qhov xwm txheej.Cov tuam txhab lag luam uas muaj cov txiaj ntsig muaj txiaj ntsig tuaj yeem xaiv tawm ntawm kev tswj hwm kev lag luam.Es tsis txhob ua tubing, ces khoov, txheej, thiab ua cov pob qij txha thiab sib dhos, yuav tubing thiab tsom mus rau lwm yam dej num.
Ntau lub tuam txhab uas tsim cov khoom siv hydraulic lossis cov khoom siv hluav taws xob hauv tsheb muaj lawv tus kheej cov yeeb nkab mills.Ib txhia ntawm cov nroj tsuag tam sim no yog liabilities ntau dua li cov cuab tam.Cov neeg tau txais kev pabcuam hauv lub sijhawm muaj kabmob sib kis zoo li tsav tsheb tsawg dua thiab kev kwv yees kev muag tsheb nyob deb ntawm theem ua ntej kis thoob qhov txhia chaw.Kev lag luam tsheb yog txuam nrog cov lus tsis zoo xws li kev kaw, kev lag luam sib sib zog nqus thiab tsis tshua muaj.Rau automakers thiab lawv cov neeg muag khoom, tsis muaj laj thawj xav tias qhov xwm txheej ntawm cov khoom yuav hloov mus rau qhov zoo dua yav tom ntej.Qhov tseem ceeb, ntau lub tsheb fais fab hauv kev lag luam no muaj tsawg dua steel tubing drivetrain Cheebtsam.
Gripping tube mills feem ntau ua kom xaj.Qhov no yog qhov zoo dua ntawm lawv lub hom phiaj - ua cov kav dej rau cov ntawv thov tshwj xeeb - tab sis qhov tsis zoo ntawm kev lag luam ntawm nplai.Piv txwv li, xav txog cov yeeb nkab zeb tsim los tsim 10 hli OD cov khoom rau cov khoom siv tsheb paub.Qhov kev zov me nyuam lav cov chaw raws li ntim.Tom qab ntawd, cov txheej txheem me me tau ntxiv rau lwm lub raj nrog tib lub cheeb sab nraud.Sijhawm dhau mus, qhov kev pabcuam thawj zaug tau tas sijhawm, thiab lub tuam txhab tsis muaj qhov ntim txaus los ua pov thawj qhov kev pabcuam thib ob.Kev teeb tsa thiab lwm yam nqi siab dhau los ua pov thawj.Hauv qhov no, yog tias lub tuam txhab tuaj yeem nrhiav tus neeg xa khoom muaj peev xwm, nws yuav tsum sim tawm qhov project.
Tau kawg, cov kev suav tsis nres ntawm qhov chaw txiav tawm.Kev ua tiav cov kauj ruam xws li txheej, txiav kom ntev, thiab ntim ntau ntxiv rau tus nqi.Nws yog feem ntau hais tias tus nqi zais loj tshaj plaws hauv kev tsim cov raj yog tuav.Txav cov kav dej los ntawm lub tshuab dov mus rau lub tsev khaws khoom uas lawv tau khaws los ntawm lub tsev khaws khoom thiab thauj mus rau qhov chaw zoo slitting thiab tom qab ntawd cov kav dej tau muab tso rau hauv cov khaubncaws sab nraud povtseg los pub cov kav dej rau hauv lub tshuab txiav ib zaug - tag nrho cov no txhua kauj ruam. yuav tsum tau ua hauj lwm Tus nqi zog no yuav tsis tau txais tus accountant qhov kev mloog, tab sis nws tshwm sim nws tus kheej nyob rau hauv daim ntawv ntawm ntxiv forklift tswv los yog ntxiv cov neeg ua hauj lwm nyob rau hauv lub chaw xa khoom.
Rice.2. Cov tshuaj muaj pes tsawg leeg ntawm SAE-J525 thiab SAE-J356A yog yuav luag zoo tib yam, uas yuav pab tau rau yav tas los hloov cov qub.
Cov kav dej hydraulic tau nyob ib ncig ntawm ntau txhiab xyoo.Ntau tshaj 4,000 xyoo dhau los, cov neeg Iyiv tau ua tooj liab hlau.Cov kav xyoob tau siv nyob rau hauv Suav teb thaum lub sijhawm Xia Dynasty nyob ib ncig ntawm 2000 BC.Tom qab Roman cov kav dej tau tsim los siv cov kav dej txhuas, cov khoom siv los ntawm cov txheej txheem nyiaj smelting.
seamless.Niaj hnub nimno seamless steel kav ua lawv qhov debut nyob rau hauv North America nyob rau hauv 1890. Los ntawm 1890 mus rau tam sim no, cov khoom siv raw rau cov txheej txheem no yog ib qho khoom siv puag ncig.Kev tsim kho tshiab hauv kev nruam nruam ntawm billets hauv xyoo 1950 tau coj mus rau kev hloov pauv ntawm seamless hlab los ntawm steel ingots rau hauv cov khoom siv hlau pheej yig ntawm lub sijhawm - cam khwb cia hlau.Cov kav dej hydraulic, yav dhau los thiab tam sim no, yog tsim los ntawm seamless, txias-drawn voids.Nws raug cais rau North American lag luam raws li SAE-J524 los ntawm Society of Automotive Engineers thiab ASTM-A519 los ntawm American Society for Testing and Materials.
Kev tsim cov kav dej hydraulic feem ntau yog cov txheej txheem ua haujlwm hnyav heev, tshwj xeeb tshaj yog rau cov kav dej me me.Nws xav tau ntau lub zog thiab xav tau ntau qhov chaw.
vuam.Hauv xyoo 1970, kev ua lag luam hloov pauv.Tom qab tswj hwm lub lag luam yeeb nkab steel rau ze li 100 xyoo, kev lag luam yeeb nkab seamless tau poob qis.Nws tau ntim nrog cov kav dej welded, uas ua pov thawj tias tsim nyog rau ntau yam kev siv tshuab hauv kev tsim kho thiab kev lag luam tsheb.Nws txawm nyob ib ncig ntawm lub qub Mecca - lub ntiaj teb no ntawm cov roj thiab roj pipelines.
Ob qhov kev tsim kho tshiab tau pab txhawb qhov kev hloov pauv no hauv kev ua lag luam.Ib qho cuam tshuam nrog kev nruam nruam ntawm cov slabs, uas tso cai rau cov hlau mills ua kom muaj txiaj ntsig zoo-ua kom zoo nkauj zoo nkauj.Lwm qhov ua rau HF tsis kam vuam cov txheej txheem siv tau rau kev lag luam pipeline.Qhov tshwm sim yog cov khoom tshiab: cov yeeb nkab welded nrog cov yam ntxwv zoo ib yam li seamless, tab sis ntawm tus nqi qis dua cov khoom zoo sib xws seamless.Cov yeeb nkab no tseem nyob hauv kev tsim khoom niaj hnub no thiab tau muab cais ua SAE-J525 lossis ASTM-A513-T5 hauv North American lag luam.Txij li thaum lub raj yog kos thiab annealed, nws yog ib qho khoom siv ntau heev.Cov txheej txheem no tsis yog kev ua haujlwm thiab peev nyiaj ntau npaum li cov txheej txheem seamless, tab sis cov nqi cuam tshuam nrog lawv tseem siab.
Los ntawm xyoo 1990 mus txog rau tam sim no, feem ntau ntawm cov kav dej hydraulic siv hauv kev lag luam hauv tsev, txawm tias seamless drawn (SAE-J524) lossis welded kos (SAE-J525), yog imported.Qhov no yuav yog qhov tshwm sim ntawm qhov sib txawv loj ntawm tus nqi ntawm kev ua haujlwm thiab cov khoom siv hlau ntawm Asmeskas thiab cov teb chaws xa tawm.Tshaj li 30-40 xyoo dhau los, cov khoom no tau muaj los ntawm cov tuam txhab tsim khoom hauv tsev, tab sis lawv yeej tsis muaj peev xwm tsim lawv tus kheej los ua tus neeg tseem ceeb hauv kev ua lag luam no.Cov nqi txaus nyiam ntawm cov khoom tuaj txawv teb chaws yog ib qho teeb meem loj.
kev ua lag luam tam sim no.Kev noj seamless, kos thiab annealed khoom J524 tau maj mam txo qis dua xyoo.Nws tseem muaj thiab muaj qhov chaw hauv kev lag luam hydraulic kab, tab sis OEMs nyiam xaiv J525 yog tias welded, kos thiab annealed J525 yog yooj yim.
Kev kis thoob qhov txhia chaw thiab kev ua lag luam hloov dua.Kev xa khoom thoob ntiaj teb ntawm kev ua haujlwm, hlau thiab kev thauj mus los tau poob ntawm tus nqi tib yam li qhov poob ntawm kev thov tsheb tau hais los saum toj no.Tib yam siv rau kev xa khoom ntawm J525 hydraulic roj kav.Muab cov kev txhim kho no, kev lag luam hauv tsev zoo li tau npaj rau lwm qhov kev lag luam hloov pauv.Puas yog nws npaj los tsim lwm yam khoom uas tsis tshua muaj zog tshaj li vuam, kos duab thiab annealing kav?Ib qho muaj, txawm tias nws tsis yog siv ntau.Qhov no yog SAE-J356A, uas ua tau raws li cov kev cai ntawm ntau lub tshuab hydraulic (saib daim duab 1).
Cov kev qhia tshwj xeeb tshaj tawm los ntawm SAE zoo li luv luv thiab yooj yim, vim txhua qhov kev qhia tshwj xeeb tsuas yog ib qho kev tsim cov tubing.Lub downside yog tias J525 thiab J356A zoo nkauj npaum li qub nyob rau hauv cov nqe lus ntawm qhov loj me, txhua yam khoom, thiab lwm yam ntaub ntawv, yog li cov specs yuav tsis meej pem.Tsis tas li ntawd, J356A kauv khoom rau me me txoj kab uas hla hydraulic kab yog ib tug variant ntawm J356, thiab cov yeeb nkab ncaj yog tsuas yog siv rau zus tau tej cov loj txoj kab uas hla hydraulic kav.
Daim duab 3. Txawm hais tias welded thiab txias drawn kav yog xam los ntawm ntau yam kom zoo dua rau welded thiab txias dov kav, cov neeg kho tshuab khoom ntawm ob lub tubular khoom yog sib piv.Nco tseg.Imperial qhov tseem ceeb rau PSI yog mos hloov dua siab tshiab los ntawm cov kev qhia tshwj xeeb uas yog metric qhov tseem ceeb rau MPa.
Qee tus engineers xav txog J525 yog qhov zoo tshaj plaws rau kev siv hydraulic siab xws li cov khoom hnyav.J356A tsis tshua paub tab sis kuj siv tau rau cov kua dej siab.Qee lub sij hawm cov kev xav tau ua tiav txawv: J525 tsis muaj cov hlaws ID, thaum J356A tau tsav rov qab thiab muaj cov hlaws ID me dua.
Cov khoom siv raw muaj cov khoom zoo sib xws (saib daim duab 2).Qhov sib txawv me me hauv cov tshuaj muaj pes tsawg leeg sib cuam tshuam nrog cov khoom siv kho tshuab uas xav tau.Txhawm rau kom ua tiav qee yam khoom siv xws li lub zog tensile lossis qhov kawg tensile lub zog (UTS), cov tshuaj muaj pes tsawg leeg lossis kev kho cua sov ntawm cov hlau yog txwv kom tau txais cov txiaj ntsig tshwj xeeb.
Cov kav dej no muaj cov txheej txheem zoo sib xws ntawm cov khoom siv kho tshuab, ua rau lawv hloov pauv tau hauv ntau daim ntawv thov (saib daim duab 3).Hauv lwm lo lus, yog tias ib qho ploj lawm, lwm qhov yuav txaus.Tsis muaj leej twg yuav tsum tau rov tsim lub log, kev lag luam twb muaj cov khoom sib npaug, sib npaug ntawm lub log.
Tube & Pipe Journal tau tsim tawm hauv xyoo 1990 ua thawj phau ntawv xov xwm tshwj xeeb rau kev lag luam yeeb nkab hlau.Txog rau hnub no, nws tseem yog qhov kev lag luam luam tawm nkaus xwb hauv North America thiab tau dhau los ua cov ntaub ntawv ntseeg siab tshaj plaws rau cov kws tshaj lij tubing.
Kev nkag mus rau digital tag nrho rau FABRICATOR tam sim no muaj, muab kev nkag tau yooj yim rau kev lag luam muaj txiaj ntsig.
Tag nrho cov digital nkag mus rau Tube & Pipe Journal tam sim no muaj, muab kev nkag tau yooj yim rau kev lag luam muaj txiaj ntsig.
Txaus siab rau tag nrho cov digital nkag mus rau STAMPING Journal, cov ntawv xov xwm kev lag luam hlau stamping nrog cov thev naus laus zis tshiab, kev coj ua zoo tshaj plaws thiab xov xwm kev lag luam.
Kev nkag mus rau Tus Fabricator en Español cov ntawv luam tawm tam sim no muaj, muab kev nkag tau yooj yim rau cov peev txheej lag luam muaj txiaj ntsig.
Ntu 2 ntawm peb ob ntu series nrog Ray Ripple, tus kws kos duab hlau Texan thiab welder, txuas ntxiv nws…
Post lub sij hawm: Jan-06-2023