Tianjin Brisk Metalwork Co., Ltd. yog ib qho ntawm cov tuam txhab ua lag luam thiab cov neeg muag khoom ntawm cov duab plaub hollow seem hauv Suav teb. Peb muaj lub ntiaj teb- cov cuab yeej tsim khoom thiab muaj peev xwm tsim tau zoo. Thov koj xav tias dawb mus yuav bulk check normalized rectangular hollow seem los ntawm peb lub hoobkas.
Tianjin Brisk Steel yog ib qho ntawm cov tuam ntxhab ntawm Normalized Rectangular Hollow Section hauv Suav teb. Peb cov khoom raug xa tawm mus rau Middle East, Southeast Asia, Europe, New Zealand, thiab lwm thaj chaw.Yog tias koj xav paub ntau ntxiv txog peb cov khoom, thov hu rau peb thiab xa koj daim ntawv yuav khoom.
Khoom Taw Qhia
Normalized Square & Rectangular Hollow Sections (+ N)
Square Hollow Section (SHS) / Rectangular Hollow Section (RHS) nyob rau hauv normalized condition (+N) yog hais txog lub hollow structural seem uas undergo ib tug tag nrho-lub cev offline normalizing kub-kho tom qab tsim thiab vuam.
Kev tsim khoom
Cov raj yog thawj zaug tsim thiab txias mus rau chav tsev kub. Tom qab ntawd, cov seem tiav yog rov ua kom sov hauv qhov cub rau 880-930 degree, tuav kom txaus rau lub sijhawm so, tom qab ntawd txias dawb hauv huab cua.Kev sib cais ntawm lub qhov cub reheating yog yuav tsum tau. Normalizing-Rolled (+ NR) yam tsis muaj cua sov thib ob tsis sib npaug rau cov xwm txheej normalized (+N).
normalized SHS RHS, kub tiav square hollow seem, offline normalizing tshav kub kho, steel Hoobkas
Muaj ob txoj hauv kev ntau lawm
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Kub dov puag ncig yeeb nkab → kub-extruded / kub dov rau hauv square los yog duab plaub → txias → off-line cub taws normalizing (+N) → straightening & tiav. Kub-tiav hollow seem nyob rau hauv EN 10210-1 txhawb off-line normalizing kev kho mob tom qab tsim los yog vuam.
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Kub-kuav los tiag steel sawb → txias forming → ERW high-frequency vuam → txias rau ambient kub → off-line puv-lub cev rauv normalizing (+N).
- Kev tsis nkag siab ntau: Hollow seem ua los ntawm normalizing-rolled (+NR) puag phaj yogtsis sib npaug rau tag nrho normalized tiav lawm. Cold-forming yuav rov qhia cov kev ntxhov siab uas seem thiab deformed grain qauv ntawm cov ces kaum.
Sib piv: +N Off-line Normalizing VS + NR Normalizing-Rolled
| Yam khoom | +N Off-line normalizing kub kho | + NR Normalizing-Rolled |
|---|---|---|
| Txoj Kev Kub Kub | Secondary reheating nyob rau hauv lub cub tawg tom qab tsim | Siv cov hluav taws kub uas seem, tsis muaj cua sov thib ob |
| Lub npe | Li qub | Normalizing-Rolled |
| Grain Uniformity | Qhov zoo tshaj plaws uniformity tshaj phab ntsa thickness thiab fab / welds | Me ntsis tsis zoo core-zone uniformity rau hnyav-phab ntsa hlab |
| Residual Stress | Tsawg tshaj plaws; txias-forming stress tau tso tawm tag nrho | Zoo dua li qhov kub-kub-dov tsis tau siab dua li cov khoom lag luam uas tsis zoo |
| Tsawg-kub Impact Toughness | Feem ntau ruaj khov, nyiam kev xaiv rau hnyav-phab ntsa & qis-kub tej yaam num | Ua tau raws li qhov sib npaug normalizing cov khoom yuav tsum tau nrog ntau dua residual stress |
| Nqi | Siab dua (kev siv hluav taws xob ntxiv rau kev kho cua sov) | Tus nqi qis dua |
| Hom EN Qib | S355J2H+N, S460NH | S355J2H-NR |
Performance Advantages ntawm Normalized Hollow Sections
- Grain refinement, homogeneous microstructure ntawm lub raj lub cev thiab weld seam
- Residual stress generated los ntawm txias-bending tuaj yeem tshem tawm tag nrho, txo qhov vuam deformation hauv kev tsim tom ntej
- Kev ruaj khov uas tsis tshua muaj kev kub ntxhov, tsim nyog rau kev ua haujlwm ntawm -20℃/ -50 degree
- Weldability zoo heev thiab txo qhov kev pheej hmoo ntawm kev kub ntxhov thaum vuam
- Lub kaum hardening tshwm sim los ntawm kev sib sau txias tuaj yeem raug tshem tawm
Siv tau Standards & Qib
- TS EN 10210-1 Kub ua tiav hollow seemS355J2H+N, S420NH, S460NH
- TS EN 10219-3 Txias-ua kom muaj zog siab hollow seemS460NH, S500NH (Tsuas yog cov qib high-strength fine-grain qib txhawb cov khoom tiav lawm normalizing)
- Tag nrho cov khoom tiav cov khoom cua sov-kho tom qab tsim yogtsis tso caiRau cov qauv EN 10219-1 txias-formed hollow seem.Tab sis Tsawg-kev ntxhov siab qhov kub thiab txias- nyem annealing (550–580 degree) tuaj yeem ua tau.
FAQ
Q: Vim li cas offline-normalized SHS/RHS zoo dua rau cov haujlwm kub qis?
A: Off-line normalizing refines grain qauv nyob rau hauv tag nrho cov seem thiab tag nrho tso tawm tsim-txog residual kev nyuaj siab. Nws tshem tawm cov ces kaum hardening, muab qhov ruaj khov Charpy-V-Notch cuam tshuam qhov tseem ceeb ntawm -20 degree, -40℃lossis txawm -50 degree, thiab txo qhov kev pheej hmoo ntawm kev mob khaub thuas tawg thaum lub sijhawm vuam hauv kev tsim kho huab cua txias.
Q: Dab tsi yog "off-line normalized (+N)" rau square & rectangular hollow seem raws nraim?
A: Off-line normalizing (+N) yog ib qho kev ywj pheej, tag nrho lub cev kub-kho tom qab lub raj tsim. Cov seem hollow ua tiav yog txias rau chav sov ua ntej, tom qab ntawd rov ua dua hauv lub qhov cub kom txog 880-930 degree, tuav rau soaking, thiab txias hauv huab cua.Qhov thib ob qhov cub reheating yog qhov yuav tsum tau ua, sib txawv ntawm cov khoom siv hluav taws xob (+ NR) siv cov khoom siv hluav taws xob uas tsis muaj cua sov dua.
Q: Dab tsi yog qhov txawv ntawm Off-line Normalized (+N) VS Normalizing-Rolled (+ NR) hollow seem?
A: +N (Offline Normalized): Secondary reheating nyob rau hauv cub tawg tom qab tsim; grain qauv thiab residual-kev nyuaj siab nyem yog ruaj khov tshaj plaws nyob rau hauv lub phab ntsa, ces kaum thiab weld seam. Qhov zoo tshaj plaws uas tsis tshua muaj kub cuam tshuam toughness, tus nqi siab dua.
+ NR (Normalizing-Rolled): Tsis muaj qhov cua sov thib ob, ua tiav los ntawm kev tswj kub dov thiab cua txias. Kev xaiv pheej yig dua, tab sis qhov kev ntxhov siab seem yog siab dua li cov hlab ntsha zoo li qub.
Q: Puas yuav offline normalizing hloov khoom siv xws li lub zog tawm los?
A: Thaum normalizing kub yog nruj me ntsis tswj nyob rau hauv 880-930℃nrog rau lub sij hawm soaking kom zoo, yield zog, tensile zog thiab elongation tseem tag nrho ua raws li EN 10210-1 specification. Qhov kev txhim kho tseem ceeb yog tsom rau kev ua kom zoo ntawm cov nplej, qhov seem-txo kev ntxhov siab thiab qis-kub los cuam tshuam toughness.
Cim npe nrov: Tuam Tshoj normalized rectangular hollow seem manufacturers, lwm tus neeg, Hoobkas
