Umahluko phakathi kokuqengqeleka okushushu kunye nokuqengqeleka okubandayo ikakhulu kubushushu benkqubo yokuqengqeleka. "Ukubanda" kuthetha ubushushu obuqhelekileyo, kwaye "ubushushu" buthetha ubushushu obuphezulu. Ngokombono we-metallurgy, umda phakathi kokuqengqeleka okubandayo kunye nokuqengqeleka okushushu kufuneka ukwahlulwe ngobushushu bokubuyisela icrystallization. Oko kukuthi, ukuqengqeleka ngaphantsi kweqondo lobushushu recrystallization kubanda rolling, kwaye rolling ngaphezu ubushushu recrystallization kushushu rolling. Ubushushu bokuhlaziya intsimbi yi-450-600 ℃.
Oku kulandelayo sisishwankathelo seempendulo zemibuzo malunga [Umahluko phakathi kokuqengqeleka okushushu kunye nokuqengqeleka okubandayo]:
Umahluko phakathi kokuqengqeleka okubandayo kunye nokuqengqeleka okushushu ikakhulu kubushushu benkqubo yokuqengqeleka. "Ukubanda" kuthetha ubushushu obuqhelekileyo, kwaye "ubushushu" buthetha ubushushu obuphezulu. Ngokombono we-metallurgy, umda phakathi kokuqengqeleka okubandayo kunye nokuqengqeleka okushushu kufuneka ukwahlulwe ngobushushu bokubuyisela icrystallization. Oko kukuthi, ukuqengqeleka ngaphantsi kweqondo lobushushu recrystallization kubanda rolling, kwaye rolling ngaphezu ubushushu recrystallization kushushu rolling. Ubushushu bokuhlaziya intsimbi yi-450-600 ℃
I-Hot rolling and cold rolling yinkqubo yokwenza iiplate zetsimbi okanye iiprofayili, ezinempembelelo enkulu kwisakhiwo kunye neempawu zensimbi. Ukuqengqeleka kwentsimbi ikakhulu kushushu, kwaye ukuqengqeleka okubandayo kusetyenziswa kuphela ukuvelisa intsimbi yecandelo elincinci kunye nepleyiti encinci. Iingots okanye iibhilithi zinzima ukuguqula kunye nokusebenza kwiqondo lokushisa. Ngokubanzi, zifudunyezwa kwi-1100-1250 ℃ ukuze ziqengqeleke. Le nkqubo yokuqengqeleka ibizwa ngokuba yi-hot rolling. Ubushushu bokugqibela bokuqengqeleka okushushu buqheleke bungama-800-900 ℃, kwaye ke bupholiswa ngokubanzi emoyeni, ngoko ke imeko yokuqengqeleka eshushu iyalingana nonyango oluqhelekileyo. Uninzi lwentsimbi luqengqeleka ngokuqengqeleka okushushu. Ukuqengqeleka okubandayo kubhekiselele kwindlela yokuqengqeleka yentsimbi ekhuphayo kunye nokutshintsha imilo yentsimbi ngoxinzelelo lwemiqulu kwindawo yobushushu begumbi. Nangona inkqubo yokucubungula iya kwenza ukuba ipleyiti yentsimbi ifudumale, isabizwa ngokuba yi-cold rolling.
Olu xwebhu luchaza iimeko zonikezelo zobugcisa lwamandla aphezulu kunye nemozulu exhathisayo ngombane odityanisiweyo kunye ne-arc entywilayo edityanisiweyo epholileyo eyenziwe ngentsimbi yesakhiwo enomngxuma amacandelo eesetyhula, isikwere, uxande okanye iifom ze-elliptical kwaye zenze ukubanda ngaphandle konyango lobushushu obulandelayo ngaphandle konyango lobushushu lomgca we-weld. . QAPHELA 1 Iimfuno zonyamezelo, imilinganiselo kunye neempawu zecandelo zinokufunyanwa kwi-EN 10219 2. QAPHELA 2 Ingqwalasela yabasebenzisi itsalwa kwinto yokuba ngelixa amanqanaba abandayo abunjwe kolu xwebhu anokuba neempawu zoomatshini ezifanayo kumabanga agqityiweyo kwi-EN. I-10210 3, iipropati zecandelo lesikwere kunye ne-rectangular hollow amacandelo kwi-EN 10219 2 kunye ne-EN 10210 2 ayilingani. QAPHELA 3 Uluhlu lwamabakala ensimbi luchazwe kolu xwebhu kwaye umsebenzisi unokukhetha ibakala elifanelekileyo kakhulu kusetyenziso olucetywayo kunye neemeko zenkonzo. Amabanga kunye neempawu zoomatshini, kodwa ingeyiyo imeko yokugqibela yonikezelo lwamacandelo abandayo akhiweyo anokuthelekiswa ngokubanzi nalawo akwi-EN 10025 3, EN 10025 4, EN 10025 5, EN 10025 6, EN 10149 2 kunye ne-EN 10149 3.
EN 10210-3-2020
Intsimbi eshushu egqityiweyo amacandelo angenanto-Icandelo lesi-3: Iimeko zonikezelo lobuchwephesha zamandla aphezulu kunye neentsimbi ezixhathisa imozulu
Olu xwebhu luchaza iimeko zonikezelo zobugcisa zamandla aphezulu kunye nokumelana nemozulu eshushu-egqityiweyo engenamthungo, i-welded yombane edityanisiweyo kunye ne-arc edityanisiweyo yentsimbi yesakhiwo esinomngxuma amacandelo eesetyhula, isikwere, uxande okanye iifom ze-elliptical. Isebenza kumacandelo angumngxuma akhiwe kushushu, kunye okanye ngaphandle konyango lobushushu olulandelayo, okanye abunjwe ukubanda ngonyango olulandelayo lobushushu ngaphezulu kwe-580 °C ukufumana iimpawu zomatshini ezifanayo nezo zifunyenwe kwimveliso eshushu eyenziweyo. QAPHELA 1 Iimfuno zokunyamezelana, imilinganiselo kunye neempawu zecandelo zichazwe kwi-EN 10210-2. QAPHELA 2 Ingqwalasela yabasebenzisi itsalwa kwinto yokuba ngelixa amabanga abandayo enziweyo kwi-EN 10219-3 enokuba neempawu zoomatshini ezifanayo ukuya kumabakala agqityiweyo kolu xwebhu iipropati zecandelo lesikwere kunye namacandelo anomngxuma oxande kwi-EN 10210-2 kunye ne-EN I-10219-2 ayilingani. QAPHELA 3 Uluhlu lwamabakala ezinto eziphathekayo lucacisiwe kolu xwebhu kwaye umsebenzisi unokukhetha elona bakala lifanelene kakhulu nosetyenziso olucetywayo kunye neemeko zenkonzo. Amabakala kunye neempawu zomatshini zamacandelo agqityiweyo agqityiweyo ngokuqhelekileyo afaniswa nalawo akwi-EN 10025-4, EN 10025-5 kunye ne-EN 10025-6. QAPHELA 4 Iimfuno zentsimbi engenamthungo kunye ne-welded yesakhiwo esinomgongxo ukuze sisetyenziswe kwizakhiwo ezikude nonxweme zigutyungelwe kuthotho lwe-EN 10225. QAPHELA 5 Kulindeleke ukuba kusetyenziswe i-Spiral enemingxuma enemingxuma enemingxuma ebumnyameni kwizicelo ezibandakanya ukuziphatha okuguquguqukayo (uxinzelelo lokudinwa) njengoko, ukuza kuthi ga ngoku, akukho datha yaneleyo malunga nokusebenza kwabo.
Yazisa usetyenziso olubanzi lwetyhubhu yoxande eyenziwe ngokubanda
Kwizakhiwo zemizi-mveliso nezasekuhlaleni zaseTshayina, ikhonkrithi eyomeleziweyo isetyenziswe iminyaka emininzi
Umjikelo omde kunye nongcoliseko olukhulu. Kwiminyaka yakutshanje, kunye nempumelelo ye-hot rolledH-umqadiiimveliso zeMa Steel kunye neLai Steel
Ngokutsho kwentshayelelo yemarike, ukusetyenziswa kwesakhiwo sensimbi kwishishini lokwakha kuye kwanda. Izakhiwo zovavanyo ezahlukeneyo zentsimbi, izindlu eziyimodeli kunye nezakhiwo eziphawulekayo ziye zaziswa enye emva kwenye. Imigangatho kunye neenkcukacha zoyilo nolwakhiwo nazo ziqalisile ukungena kwinqanaba lokuphucula kancinci kancinci. Ishishini lentsimbi yaseTshayina lenze inkqubela enkulu kule minyaka yakutshanje.
Nangona kunjalo, okwangoku, izakhiwo zetsimbi zokwakha zaseTshayina zisetyenziselwa ikakhulu intsimbi eshushu eqengqelekayo emile okwe-H kunye nezakhiwo ezahlukeneyo zentsimbi. Umthamo wentsimbi eshushu emilise okwe-H eTshayina ifikelele kwi-3 yezigidi zeetoni, kwaye imveliso yentsimbi edityanisiweyo emilise okwe-H kunye nezakhiwo ezahlukeneyo zentsimbi nazo zingamakhulu amawaka eetoni. Imveliso yemibhobho edityanisiweyo e-China ingaphezulu kwe-7 yezigidi zeetoni ngonyaka, apho imveliso yeimibhobho epholileyo yesikwere kunye noxandekunye neentlobo ezahlukeneyo zetsimbi ezibandayo zokwakha izakhiwo zetsimbi zingaphantsi kwe-5% yesiphumo esipheleleyo sentsimbi epholileyo. Ukusetyenziswa kwentsimbi ebandayo kwimizi-mveliso kunye nezakhiwo zentsimbi yokwakha e-China kwinqanaba lokuqala. Isikwere esenziwe ngokubanda kunye nesakhiwo sexande esidityanisiweyo sisandul 'ukuqalisa ukubuyisela intsimbi ye-H efana ne-ht-rolled njengekholamu yesakhiwo sensimbi. Enye intsimbi epholileyo epholileyo isetyenziswa kancinci kwishishini lokwakha.
icandelo lentsimbi ye-yuantai ye-crane,icandelo elingenamthungo yuantai,yuantai square hollow icandelo
Okwangoku, i-Ofisi yoKwakha iye yakha izakhiwo zovavanyo lwesakhiwo sentsimbi kwizakhiwo zoshishino kunye nezoluntu, ezifana
Iindawo zokuhlala ezimbini zokubonisa izakhiwo zentsimbi zoMphathiswa woKwakha zakhiwa eTianjin ngo-2002. Kwasetyenziswa imibhobho yentsimbi kule projekthi.
Ikholamu yekhonkrithi yentsimbi yesakhelo sentsimbi eyomeleziweyo ityhubhu engundoqo yekhonkrithi (SRC) inkqubo yesakhiwo, indawo yeprojekthi iyonke.
I-8000m2, umzimba oyintloko unemigangatho elishumi elinanye, enye ikholamu yenziwe ngombhobho ojikelezileyo, kwaye enye ikholamu yenziwe ngombhobho wentsimbi yesikwere.
350x350mm, ubukhulu buyohluka ngokomgangatho, apho imigangatho eyi-1 ~ 3 yi-16mm, 4~
14mm kumgangatho we-6, 12mm kumgangatho we-7 ukuya kwe-9, 10mm kumgangatho we-10 ukuya kwe-11, kwaye ugalele kumbhobho wentsimbi.
C40 ikhonkrithi.
Umqadi wenziwe nge-welded I-beam kunye neenkcukacha ze-350x200x10x18mm, kunye ne-slab yomgangatho.
Yi-slab edityanisiweyo ene-prestressed kunye ne-high-strey spiral rib reinforcement. Ngelo xesha, akukho mvelisi e-China wavelisa iityhubhu zesikwere ezinobubanzi obukhulu kangaka, ngoko kwasetyenziswa iityhubhu zentsimbi yesikwere kule projekthi, eyayiziintsika ezine zebhokisi ezidityanisiweyo.
Iprojekthi yesakhiwo sentsimbi yokubonisa iprojekthi yezindlu zoMphathiswa woKwakha we-Tianjin Yuantai Derun Steel Pipe Manufacturing Group Co., Ltd. idonsa iimpembelelo ezimbini ekusetyenzisweni kwentsimbi yecandelo elibandayo (ikakhulukazi ityhubhu exande) kwisakhiwo sentsimbi yesakhiwo:
Okokuqala, indawo yentengiso yeetyhubhu ezibuxande ezibandayo ezinobungakanani obukhulu, kwaye inani elifanelekileyo lemigangatho yesakhiwo sentsimbi yokuhlala.
Ngemigangatho eyi-10 ~ 18, ezo zakhiwo ziphakathi kunye neziphakamileyo zokuphakama nazo zineemfuno ezithile zokuchazwa kweetyhubhu ezibuxande ezibandayo.
Okwesibini, imibhobho yentsimbi yesikwere ineengenelo ezicacileyo ngaphezulu kwemibhobho yentsimbi engqukuva ngezizathu ezithathu:
Okokuqala, iibhobho zesikwere kunye nezijikelezileyo ezinobude becala elifanayo kunye nobubanzi bunomthamo ongcono wokuthwala kunye nokusebenza kwe-seismic
Kulungile. Ngokovavanyo olwenziwa yiyunivesithi yaseTianjin kwimigangatho emithathu ityhubhu ephindwe kabini yesikwere kunye nesakhelo sekholomu yetyhubhu ejikelezayo.
Ubude becala lekholomu yombhobho yi-150mm, kwaye ububanzi bombhobho ojikelezayo ngu-150mm. Iziphumo zovavanyo zibonisa ukuba le yangaphambili iyaxhathisa kwi-lateral force i-learing bearing
Umthamo womthwalo kunye nomthamo wokugqibela wokuthwala uphezulu ngama-80% kunowokugqibela, kwaye isalathisi sokusebenza kweenyikima simalunga nokuphindwe kabini kwezi zamva;
Okwesibini, ukwakhiwa kombhobho wesikwere kulungeleka ngakumbi. Ikholamu yekhonkrithi yendawo yokuhlala yesakhiwo sentsimbi kufuneka ibe ngaphezulu
Ukwakhiwa, icandelo elijikelezayo litshintshwa libe licandelo lesikwere;
Okwesithathu, kunzima ukujongana nokudibanisa phakathi kweekholamu zekhonkrithi ezijikelezayo kunye nemiqadi. Isakhiwo sentsimbi yexesha elizayo eTshayina
Kwimarike, i-square-formed square and rectangular tubes iya kuba nesabelo esibalulekileyo.
Ukunyangwa kobushushu bomphezulu wombhobho wensimbi kunokuphucula kakhulu umda wokudinwa kwemveliso yomsebenzi. Umzekelo, itekhnoloji yokuqala ye-axle yemoto eyenziwe ngentsimbi lunyango oluqhelekileyo lobushushu, kwaye ubomi bayo benkonzo bonyuswe phantse ngamaxesha angama-20 ngokutshintsha ukusuka kunyango lobushushu ukuya kunyango lobushushu. Ukongeza, unyango lobushushu bomphezulu lunciphisa uvakalelo lwesithuba lwamalungu. Injongo yonyango lokushisa komhlaba kukuphucula ngcono iimpawu zeemveliso. Isetyenziswa ngokubanzi kwiinkalo ezahlukeneyo, ezihambelana ngokusondeleyo neempawu zombini.
Ixesha lokuposa: Dec-21-2022
