Qhov txawv ntawm kev dov kub thiab kev dov txias yog qhov kub ntawm cov txheej txheem dov. "Txias" txhais tau tias kub ib txwm, thiab "kub" txhais tau tias kub siab. Los ntawm qhov pom ntawm metallurgy, ciam teb ntawm kev dov txias thiab kev dov kub yuav tsum tau sib txawv los ntawm qhov kub recrystallization. Ntawd yog, kev dov hauv qab qhov kub recrystallization yog dov txias, thiab kev dov saum qhov kub recrystallization yog dov kub. Qhov kub recrystallization ntawm hlau yog 450-600 ℃.
Cov hauv qab no yog cov lus teb rau cov lus nug txog [Qhov sib txawv ntawm kev dov kub thiab kev dov txias]:
Qhov txawv ntawm kev dov txias thiab kev dov kub yog qhov kub ntawm cov txheej txheem dov. "Txias" txhais tau tias kub ib txwm, thiab "kub" txhais tau tias kub siab. Los ntawm qhov pom ntawm metallurgy, ciam teb ntawm kev dov txias thiab kev dov kub yuav tsum tau sib txawv los ntawm qhov kub recrystallization. Ntawd yog, kev dov hauv qab qhov kub recrystallization yog dov txias, thiab kev dov saum qhov kub recrystallization yog dov kub. Qhov kub recrystallization ntawm hlau yog 450-600 ℃
Kev dov kub thiab kev dov txias yog cov txheej txheem ntawm kev tsim cov phaj hlau lossis cov ntaub ntawv, uas muaj kev cuam tshuam loj heev rau cov qauv thiab cov khoom ntawm hlau. Kev dov hlau feem ntau yog dov kub, thiab kev dov txias tsuas yog siv los tsim cov hlau me me thiab phaj nyias. Cov ingots lossis billets nyuaj rau deform thiab ua tiav ntawm chav tsev kub. Feem ntau, lawv raug cua sov rau 1100-1250 ℃ rau kev dov. Cov txheej txheem dov no hu ua kev dov kub. Qhov kub kawg ntawm kev dov kub feem ntau yog 800-900 ℃, thiab tom qab ntawd nws feem ntau txias hauv huab cua, yog li lub xeev dov kub yog sib npaug rau kev kho mob normalizing. Feem ntau cov hlau yog dov los ntawm kev dov kub. Kev dov txias yog hais txog txoj kev dov ntawm extruding hlau thiab hloov cov duab ntawm hlau nrog lub siab ntawm yob ntawm chav tsev kub. Txawm hais tias cov txheej txheem ua tiav kuj tseem yuav ua rau phaj hlau sov, nws tseem hu ua kev dov txias.
Daim ntawv no qhia txog cov xwm txheej kev xa khoom rau lub zog siab thiab huab cua tiv taus hluav taws xob welded thiab submerged arc welded txias tsim cov hlau hollow seem ntawm cov voj voog, square, rectangular lossis elliptical daim ntawv thiab tsim txias tsis muaj kev kho cua sov tom qab ntawd dua li kev kho cua sov ntawm kab vuam. CEEB TOOM 1 Cov kev cai rau kev kam rau siab, qhov ntev thiab cov khoom seem tuaj yeem pom hauv EN 10219 2. CEEB TOOM 2 Kev mloog zoo ntawm cov neeg siv tau kos rau qhov tseeb tias thaum cov qib txias tsim hauv daim ntawv no tuaj yeem muaj cov khoom siv sib npaug rau cov qib kub tiav hauv EN 10210 3, cov khoom seem ntawm cov seem square thiab rectangular hollow hauv EN 10219 2 thiab EN 10210 2 tsis sib npaug. CEEB TOOM 3 Ntau yam qib hlau tau teev tseg hauv daim ntawv no thiab tus neeg siv tuaj yeem xaiv qib tsim nyog tshaj plaws rau kev siv thiab kev pabcuam. Cov qib thiab cov khoom siv kho tshuab, tab sis tsis yog qhov xwm txheej kawg ntawm cov khoom siv txias uas tsim los ntawm cov seem hollow feem ntau piv rau cov uas nyob hauv EN 10025 3, EN 10025 4, EN 10025 5, EN 10025 6, EN 10149 2 thiab EN 10149 3.
EN 10210-3-2020
Kub tiav lawm cov hlau qauv hollow seem- Ntu 3: Cov xwm txheej xa khoom rau cov hlau muaj zog thiab tiv taus huab cua
Daim ntawv no qhia txog cov xwm txheej kev xa khoom rau lub zog siab thiab tiv taus huab cua kub-ua tiav seamless, hluav taws xob welded thiab submerged arc welded steel qauv hollow seem ntawm lub voj voog, square, rectangular lossis elliptical daim ntawv. Nws siv rau hollow seem tsim kub, nrog lossis tsis muaj kev kho cua sov tom qab, lossis tsim txias nrog kev kho cua sov tom qab saum toj no 580 ° C kom tau txais cov khoom siv sib npaug rau cov uas tau txais hauv cov khoom kub tsim. CEEB TOOM 1 Cov kev cai rau kev kam rau siab, qhov ntev thiab cov khoom seem tau teev tseg hauv EN 10210-2. CEEB TOOM 2 Cov neeg siv tau mloog zoo rau qhov tseeb tias thaum cov qib tsim txias hauv EN 10219-3 tuaj yeem muaj cov khoom siv sib npaug rau cov qib kub-ua tiav hauv daim ntawv no cov khoom seem ntawm cov seem square thiab rectangular hollow hauv EN 10210-2 thiab EN 10219-2 tsis sib npaug. CEEB TOOM 3 Ntau yam khoom siv qib tau teev tseg hauv daim ntawv no thiab tus neeg siv tuaj yeem xaiv qib tsim nyog tshaj plaws rau kev siv thiab kev pabcuam. Cov qib thiab cov khoom siv kho tshuab ntawm cov seem hollow tiav lawm feem ntau piv rau cov uas nyob hauv EN 10025-4, EN 10025-5 thiab EN 10025-6. CEEB TOOM 4 Cov kev cai rau cov seem seamless thiab welded steel structural hollow rau kev siv hauv cov qauv offshore tau them rau hauv EN 10225 series. CEEB TOOM 5 Cov seem hollow welded kauv yuav tsum tau siv nrog kev ceev faj hauv cov ntawv thov uas muaj kev coj cwj pwm dynamic (kev ntxhov siab qaug zog) vim, txog tam sim no, tsis muaj cov ntaub ntawv txaus txog lawv cov kev ua tau zoo.
Qhia txog kev siv dav dav ntawm lub raj xa dej txias
Hauv Suav teb cov tsev lag luam thiab pej xeem, cov pob zeb ua kom muaj zog tau siv ntau xyoo
Lub voj voog ntev thiab muaj kuab paug ntau. Nyob rau hauv xyoo tas los no, nrog rau kev vam meej ntawm cov kub dovH-beamcov khoom ntawm Ma Steel thiab Lai Steel
Raws li kev qhia txog kev ua lag luam, kev siv cov qauv hlau hauv kev lag luam kev tsim kho tau nthuav dav. Ntau yam qauv hlau sim tsev, cov tsev qauv thiab cov tsev tseem ceeb tau raug qhia ib qho tom qab ib qho. Cov qauv thiab cov lus qhia rau kev tsim qauv thiab kev tsim kho kuj tau pib nkag mus rau theem ntawm kev txhim kho maj mam. Tuam Tshoj txoj kev lag luam qauv hlau tau ua tiav zoo heev hauv xyoo tas los no.
Txawm li cas los xij, tam sim no, Tuam Tshoj cov qauv hlau feem ntau yog siv rau cov hlau kub dov H-puab thiab ntau yam hlau welded. Lub peev xwm ntawm cov hlau kub dov H-puab hauv Tuam Tshoj tau txog 3 lab tons, thiab cov zis ntawm cov hlau welded H-puab thiab ntau yam hlau qauv kuj yog ntau pua txhiab tons. Cov zis ntawm cov kav dej welded hauv Tuam Tshoj yog ntau dua 7 lab tons hauv ib xyoos, uas cov zis ntawmCov kav dej plaub fab thiab plaub fab uas ua los ntawm txiasthiab ntau yam hlau tsim txias rau kev tsim cov qauv hlau yog tsawg dua 5% ntawm tag nrho cov zis ntawm cov hlau tsim txias. Daim ntawv thov ntawm cov hlau tsim txias hauv kev lag luam thiab kev tsim kho vaj tse hlau hauv Suav teb yog nyob rau theem pib. Cov yeeb nkab welded plaub fab thiab plaub fab txias tau pib hloov cov hlau kub dov H-puab ua cov qauv hlau. Lwm cov hlau tsim txias siv tsawg dua hauv kev lag luam kev tsim kho.
yuantai steel hollow seem rau crane,yuantai seamless hollow seem,yuantai square hollow seem
Tam sim no, Ministry of Construction tau tsim qee lub tsev kuaj hlau hauv cov tsev lag luam thiab pej xeem, xws li
Ob lub tsev ua qauv qhia txog cov qauv hlau ntawm Ministry of Construction tau tsim tsa hauv Tianjin xyoo 2002. Cov kav dej hlau tau siv rau hauv qhov project no.
Cov ncej ua los ntawm cov hlau ncej hlau reinforced concrete core tube (SRC) cov qauv, tag nrho thaj chaw ua haujlwm
8000m2, lub cev tseem ceeb muaj kaum ib lub plag tsev, ib kem yog ua los ntawm cov yeeb nkab puag ncig, thiab lwm kem yog ua los ntawm cov yeeb nkab hlau plaub fab
350x350mm, qhov tuab sib txawv nrog hauv pem teb, uas 1 ~ 3 pem teb yog 16mm, 4 ~
14 hli rau hauv pem teb 6, 12 hli rau hauv pem teb 7 txog 9, 10 hli rau hauv pem teb 10 txog 11, thiab nchuav rau hauv cov yeeb nkab hlau
C40 pob zeb ua vaj tse.
Lub nqaj yog ua los ntawm welded I-beam nrog qhov kev qhia tshwj xeeb ntawm 350x200x10x18mm, thiab lub hauv pem teb slab
Nws yog ib daim slab composite uas muaj zog heev. Lub sijhawm ntawd, tsis muaj lub tuam txhab tsim khoom hauv Suav teb tsim cov raj plaub fab uas muaj lub cheeb loj li no, yog li cov raj hlau plaub fab tau siv rau hauv qhov project, uas yog plaub lub phaj vuam BOX kem.
Qhov project qauv tsev ua qauv hlau ntawm Ministry of Construction ntawm Tianjin Yuantai Derun Steel Pipe Manufacturing Group Co., Ltd. kos ob lub tswv yim los ntawm kev siv cov hlau txias-tsim (feem ntau yog lub raj plaub fab) hauv cov qauv tsev hlau:
Ua ntej, qhov chaw ua lag luam rau cov raj loj loj uas tsim los ntawm cov duab plaub fab txias yog qhov loj, thiab tus lej ntawm cov plag tsev tsim nyog rau cov qauv hlau nyob yog
Nrog 10 ~ 18 pem teb, cov qauv nruab nrab thiab siab kuj muaj qee qhov kev cai rau cov lus qhia ntawm cov raj duab plaub fab txias.
Qhov thib ob, cov kav hlau square muaj qhov zoo dua li cov kav hlau puag ncig rau peb qho laj thawj:
Ua ntej, cov kav dej plaub fab thiab cov kav dej puag ncig uas muaj tib sab ntev thiab txoj kab uas hla muaj peev xwm dais tau zoo dua thiab ua tau zoo tiv taus av qeeg
Zoo. Raws li qhov kev sim ua los ntawm lub tsev kawm ntawv qib siab hauv Tianjin ntawm peb zaj dab neeg ob lub raj plaub fab thiab lub raj kheej kheej kheej.
Qhov ntev ntawm sab ntawm cov yeeb nkab yog 150 hli, thiab txoj kab uas hla ntawm cov yeeb nkab puag ncig yog 150 hli. Cov txiaj ntsig ntawm kev sim qhia tau hais tias tus qub tiv taus kev tawm dag zog sab nraud.
Lub peev xwm thauj khoom thiab lub peev xwm dais qhov kawg yog 80% siab dua li qhov kawg, thiab qhov ntsuas kev ua tau zoo ntawm av qeeg yog kwv yees li ob npaug ntawm qhov kawg;
Qhov thib ob, kev tsim cov yeeb nkab plaub fab yooj yim dua. Cov kem pob zeb ntawm cov qauv hlau yuav tsum tau ua ntxiv
Rau kev tsim kho, seem puag ncig yog hloov mus rau seem plaub fab;
Qhov thib peb, nws nyuaj rau kev daws qhov kev sib txuas ntawm cov kem pob zeb thiab cov ntoo. Cov qauv hlau yav tom ntej hauv Suav teb
Hauv kev ua lag luam, cov raj plaub fab thiab cov raj plaub fab txias yuav muaj feem tseem ceeb.
Kev kho cua sov ntawm cov yeeb nkab hlau tuaj yeem txhim kho qhov kev txwv ntawm cov khoom ua haujlwm. Piv txwv li, cov txheej txheem ua thawj zaug ntawm lub tsheb ib nrab qag ua los ntawm hlau yog kev kho cua sov ib txwm muaj, thiab nws lub neej kev pabcuam tau nce ze li ntawm 20 npaug los ntawm kev hloov pauv ntawm kev kho cua sov ntawm qhov chaw mus rau kev kho cua sov. Tsis tas li ntawd, kev kho cua sov ntawm qhov chaw txo qhov rhiab heev ntawm qhov chaw seem. Lub hom phiaj ntawm kev kho cua sov ntawm qhov chaw yog los txhim kho cov yam ntxwv ntawm cov khoom zoo dua. Nws yog siv dav hauv ntau qhov chaw, uas muaj feem cuam tshuam nrog cov yam ntxwv ntawm ob qho tib si.
Lub sijhawm tshaj tawm: Lub Kaum Ob Hlis-21-2022
