Thick walled square yeeb nkab chaw tsim tshuaj paus
Raws li lub npe qhia, square yeeb nkab yog hom square yeeb nkab hom. Ntau cov ntaub ntawv tuaj yeem tsim cov yeeb nkab square lub cev. Nws yog siv rau lub hom phiaj twg thiab qhov twg. Feem ntau cov kav dej square yog cov kav hlau. Tom qab unpacking, leveling, crimping thiab welding, lawv tsim ib puag ncig kav, uas yog dov mus rau hauv square kav, thiab ces txiav mus rau hauv lub ntev ntev. Feem ntau, muaj 50 square tubes rau ib pob. Nyob rau hauv cov nqe lus ntawm qhov chaw, feem ntau square tubes nyob rau hauv loj specifications, xws li los ntawm 10 * 10 * 0.8-1.5 mus rau 500 * 500 * 10-25. Square raj yog siv rau cov qauv square raj, hniav square raj, lub tsev square tubes, mechanical square tubes, thiab lwm yam.
Thick walled square yeeb nkab yog ib hom lub teeb tuab phab ntsa steel yeeb nkab nrog hollow square seem, tseem hu ua steel txias-tsim profile. Nws yog cov hlau seem uas muaj cov duab plaub thiab qhov loj, uas yog ua los ntawm Q235 kub dov los yog txias dov strip los yog coil raws li cov khoom siv hauv paus, txias khoov thiab vuam ntau zaus. Ntxiv rau qhov thickening ntawm phab ntsa thickness, lub kaum sab xis loj thiab ntug flatness ntawm kub-dov ntxiv tuab phab ntsa square yeeb nkab ncav cuag los yog txawm tshaj cov theem ntawm kuj welding txias tsim square yeeb nkab.
Thick walled square tubes siv nyob rau hauv kev tsim kho, machinery manufacturing, hlau thiab steel siv tej yaam num, shipbuilding, hnub ci fais fab kev txhawb nqa, steel qauv engineering, fais fab engineering, fais fab nroj tsuag, ua liaj ua teb thiab tshuaj machinery, iav kab hlau rhuav phab ntsa, tsheb chassis, tshav dav hlau, boiler kev tsim kho, txoj kev loj railings, kev tsim vaj tsev, zoo ib yam li square tubes, thiab lwm yam.
Classification ntawm tuab phab ntsa square yeeb nkab ntau lawm txheej txheem
Raws li cov txheej txheem ntau lawm, tuab phab ntsa square yeeb nkab yog muab faib ua kub dov tuab phab ntsa square yeeb nkab, txias kos tuab phab ntsa square yeeb nkab, extruded tuab phab ntsa square yeeb nkab thiab welded square yeeb nkab.
(a) Raws li cov txheej txheem - arc vuam square raj, tsis kam vuam square raj (siab zaus thiab tsis tshua muaj zaus), roj vuam square raj thiab rauv vuam square raj.
(b) Muab faib los ntawm weld - ncaj welded square yeeb nkab thiab kauv welded square yeeb nkab.
Cov raj square tau muab faib ua cov pa roj carbon zoo tib yam square raj thiab qis alloy square raj raws li cov khoom siv. Cov pa roj carbon zoo tib yam tau muab faib ua: Q195, Q215, Q235, SS400, 20 # steel, 45 # steel, thiab lwm yam; Cov hlau tsis tshua muaj hlau tau muab faib ua Q345, 16Mn, Q390, St52-3, thiab lwm yam.
Cov raj square tau muab faib ua lub teb chaws tus qauv square tubes, Japanese standard square tubes, British standard square tubes, American standard square tubes, European standard square tubes thiab non-standard square tubes raws li cov qauv tsim.
Cov kav dej square raug cais raws li cov duab seem:
(1) Ib qho yooj yim seem square tube - square tube, tuab phab ntsa plaub lub raj.
(2) Square yeeb nkab nrog cov seem complex - paj zoo li tuab phab ntsa square yeeb nkab, qhib tuab phab ntsa square yeeb nkab, corrugated tuab phab ntsa square yeeb nkab thiab tshwj xeeb-zoo li tus tuab phab ntsa square yeeb nkab.
Raws li kev kho deg, tuab phab ntsa square yeeb nkab yog muab faib ua: tuab phab ntsa kub-dip galvanized square yeeb nkab, tuab phab ntsa electro galvanized square yeeb nkab, tuab phab ntsa oiled square yeeb nkab thiab tuab phab ntsa pickled square yeeb nkab.
Thick walled square tubes raug cais raws li lawv cov kev siv - square tubes rau kho kom zoo nkauj, square tubes rau cov cuab yeej siv tshuab, square tubes rau kev lag luam tshuab, square raj rau tshuaj lom neeg kev lag luam, square tubes rau steel qauv, square tubes rau nkoj tsim, square tubes rau tsheb. , square tubes rau steel beams thiab kab, thiab square tubes rau tshwj xeeb hom phiaj
Square raj yog cais los ntawm phab ntsa thickness - super tuab phab ntsa square raj, tuab phab ntsa square raj thiab nyias phab ntsa square raj
Qhov hnyav xam mis ntawm tuab phab ntsa square yeeb nkab: 4 * phab ntsa thickness * (sab ntev phab ntsa thickness) * 7.85
Kev suav cov qauv ntawm cov yeeb nkab duab plaub qhov hnyav: {(perimeter ÷ 3.14) - phab ntsa thickness} * phab ntsa thickness * 0.02466
Qhov siab tshaj plaws specification ntawm cov kab ntau lawm kab ntawm lub koom haum txheej txheem yog 500mm * 500mm * 19mm, uas yog qhov thib ob nyob rau hauv lub ntiaj teb no. Qhov loj tshaj plaws 26 nti square tube ntau lawm kab ntawm Nippon Steel nyob rau hauv lub ntiaj teb no yog 550mm * 550mm * 22mm. Tam sim no, qhov loj tshaj plaws specification ntawm square square yeeb nkab nyob rau hauv European thiab American lub teb chaws yog 400 * 400 * 12.7mm.
Nyob rau hauv xyoo tas los no, nrog rau lub xeev kev nqis peev hauv kev tsim peev, ntau thiab ntau lub nroog loj thiab kev tsim kho nyob ib ncig ntawm lub tebchaws tau txais cov qauv steel. Vim qhov zoo ntawm cov tsos zoo nkauj, tsim nyog kev ntxhov siab thiab kev kho mob yooj yim, qhov loj-loj tuab tuab phab ntsa square tube rectangular raj yog dav siv hauv tshav dav hlau davhlau ya nyob twg lub tsev Truss qauv system thiab kab hlau rhuav phab ntsa txhawb kev ua kis las thiab cov rooj sib tham thiab cov chaw ua yeeb yam tau dav. siv los ua cov tswv cuab steel. Txawm li cas los xij, hauv kev siv tswv yim, cov kav dej square thiab cov duab plaub kuj ntsib qee qhov teeb meem uas yuav tsum tau daws sai.
Txhawm rau txo qhov hnyav ntawm tus kheej thiab txhim kho kev nyab xeeb kev ua haujlwm xws li av qeeg thiab kev cuam tshuam, cov hlau muaj zog tau siv dav hauv tsev thiab txawv teb chaws, thiab cov khoom siv zog txwv tau mus txog 630mpa lossis siab dua. Lub zog tensile ntawm lub hauv paus hlau ntawm cov square thiab cov yeeb nkab uas tsim los ntawm cov txheej txheem tuaj yeem ncav cuag 630mpa, qeb duas hauv ntiaj teb raws li cov khoom siv zog qib. Lub zog siab tshaj plaws ntawm cov khoom ntawm Nippon Steel ntau lawm kab hauv Nyiv tsuas yog 550MPa, nrog qhov sib txawv ntawm ze li ntawm 15%.
Qhov siab tshaj plaws thickness ntawm lub square thiab lub raj raj uas ua los ntawm cov txheej txheem yog 19 hli. Lub thickness ntawm super tsis yog tsuas yog tshwm sim nyob rau hauv lub meej thickness, tab sis kuj nyob rau hauv tus txheeb ze thickness ntawm cov khoom. Lub thickness yog ib qho tseem ceeb Performance index ntawm qhov nyuaj ntawm txias dabtsi yog khoov txoj kev. Lub raj square yog qhia los ntawm ntug thickness piv. Tam sim no, nws yog feem ntau ntseeg nyob rau hauv tsev thiab txawv teb chaws hais tias thaum lub ntug thickness ratio yog tsawg tshaj li 10, cov khoom muaj siab forming nyuaj. Rau cov square thiab square yeeb nkab uas tsim los ntawm cov txheej txheem, cov ntug thickness piv ntawm cov khoom nrog cov seem me me thiab cov phab ntsa loj tuaj yeem ncav cuag 7, xws li 100mm * 100mm * 14mm, 120mm * 120mm * 16mm, thiab lwm yam.
Qhov txias-tsim loj-loj tuab phab ntsa square yeeb nkab ua los ntawm B490RNQ kub-kuav los tiag steel siab ua tau raws li qhov yuav tsum tau ntawm lub teb chaws tus qauv Q345B nyob rau hauv cov nqe lus ntawm txhua yam khoom nyob rau hauv chav tsev kub, nws txoj kev tsim thiab ua cov khoom yog sib npaug los yog zoo dua Q345B, thiab qhov sib piv tau raws li qhov yuav tsum tau ua seismic ntawm lub teb chaws kev tsim kho kev lag luam specifications. Nyob rau tib lub sijhawm, nws qhov kev ua haujlwm kub kub yog qhov zoo dua li Q345B ntawm tib theem. Ntawm 600, lub zog tawm los ntawm B490RNQ tseem nyob ntawm 310mpa, uas yog siab tshaj 2/3 ntawm chav tsev kub yield zog, thaum lub zog tawm los ntawm Q345B nrog phab ntsa thickness ntau tshaj 8mm hauv 500 txheej txheem yog qis dua 2/3. ntawm chav tsev kub yield zog.
