Amacandelo aphambili esakhiwo setsimbi adityaniswe neentsika zetsimbi ezimilise okwe-H, imiqadi kunye neentsimbi.I-welding deformation isoloko isebenzisa ezi ndlela zintathu zilandelayo zokulungisa amadangatye: (1) indlela yokufudumeza ngomgca;(2) Indlela yokufudumeza indawo;(3) Indlela yokufudumeza unxantathu.
1. Lungisa ubushushu
Oku kulandelayo bubushushu bobushushu ngexesha lokulungiswa komlilo (owenziwe ngentsimbi ethambileyo)
Ukulungiswa kobushushu obuphantsi 500 degrees ~ 600 degrees Indlela yokupholisa: amanzi
Ukulungiswa kobushushu obuphakathi 600 degrees ~ 700 degrees Indlela yokupholisa: umoya kunye namanzi
Ukulungiswa kobushushu obuphezulu 700 degrees ~ 800 degrees Indlela yokupholisa: umoya
Izilumkiso: Iqondo lokushisa lokufudumeza akufanele libe phezulu kakhulu xa ukulungiswa kwedangatye kuphezulu kakhulu, kwaye kuphezulu kakhulu kuya kubangela ukuba isinyithi sibe brittle kwaye sichaphazele ukuqina kwempembelelo.I-16Mn ayinakupholiswa ngamanzi ngexesha lokulungiswa kobushushu obuphezulu, kubandakanywa iintsimbi ezinobunzima obukhulu okanye ukuqina kokuqina.
2. Indlela yokulungisa
2.1 Ukuguqulwa kwe-angular ye-flange plate
Lungisa i-deformation yeentsika zetsimbi ezinokwakheka kwe-H, imiqadi kunye nee-engile zokuxhasa.Kwipleyiti flange (ngaphandle ulungelelwaniso weld) longitudinal linear ukufudumeza (ubushushu ubushushu ilawulwa ngezantsi degrees 650), ingqalelo uluhlu zokufudumeza ayidluli uluhlu olulawulwa ngeenyawo welding ezimbini, ngoko musa ukusebenzisa ukupholisa amanzi.Xa ukufudumala kumgca, qaphela: (1) akufanele ufudumale ngokuphindaphindiweyo kwindawo efanayo;(2) Musa ukunkcenkceshela ngexesha lokufudumeza.
2.2 I-arch ephezulu kunye ne-deflection ephantsi kunye ne-deformation yokugoba
(1) Kwi-flange plate, ejongene ne-weld ye-longitudinal, ukusuka phakathi ukuya kwiziphelo ezibini zokufudumeza umgca, unokulungisa ukugoba ukugoba.Ukuze ugweme ukugoba kunye nokuguqula i-deformation, amabhande amabini okufudumala aqhutyelwa ngaxeshanye.Ukulungiswa kobushushu obuphantsi okanye ukulungiswa kobushushu obuphakathi kungasetyenziswa.Le ndlela inceda ukunciphisa uxinzelelo kwi-weld, kodwa le ndlela ine-shrinkage enkulu yecala ngexesha elifanayo kunye ne-longitudinal shrinkage, okunzima ukuyilawula.
(2) Ubushushu bomgca kwipleyiti yeflange kunye nokufudumeza unxantathu kwiwebhu.Sebenzisa le ndlela ukulungisa i-deformation yokugoba yeentsika, imiqadi, i-braces, umphumo uyamangalisa, ububanzi obunqamlekileyo bokufudumeza buthathwa ngokubanzi nge-20-90mm, ubukhulu beplate yiyure, ububanzi bokufudumeza kufuneka bube buncinci, kunye nenkqubo yokufudumeza kufuneka. kwandiswe ukusuka embindini wobubanzi ukuya kumacala omabini.Ubushushu bomgca busebenza kakuhle ngabantu ababini ngaxeshanye, kwaye ke ukufudumeza ububanzi unxantathu unxantathu akufanele kudlule amaxesha ama-2 ubukhulu bepleyiti, kwaye umzantsi unxantathu ulingana nobubanzi bobushushu bomgca wephiko elihambelanayo. ipleyiti.Unxantathu wokufudumeza uqala phezulu kwaye uyanda ukusuka embindini ukuya emacaleni, ukufudumeza umaleko ngongqimba kude kube phantsi konxantathu.Iqondo lokushisa akufanele libe phezulu kakhulu xa ufudumeza iwebhu, ngaphandle koko kuya kubangela ukuguqulwa koxinzelelo kwaye kube nzima ukuyilungisa.
Qaphela: Le ndlela yokufudumeza unxantathu ingentla iyasebenza kwisilungiso se-bend yecala lecandelo.Xa ukufudumala, ukulungiswa kobushushu obuphakathi kufuneka kusetyenziswe, kwaye ukunkcenkceshela kufuneka kube ngaphantsi.
(3) Ukuguqulwa kwamaza kwiikholamu, imiqadi kunye neewebhu zenkxaso
Ukulungisa i-deformation yamaza, kufuneka siqale sifumane iincopho eziphakanyisiweyo kwaye sisebenzise indlela yokufudumeza ichaphaza ngehamile yesandla ukulungisa.Idayamitha yechaphaza lokufudumeza ngokuqhelekileyo yi-50 ~ 90mm, xa ubukhulu bepleyiti yentsimbi okanye indawo ye-wavy inkulu, i-diameter kufuneka yandiswe, enokucinezelwa d = (4δ + 10) mm (d yidayamitha indawo yokufudumeza, δ bubunzima bepleyiti) ibalwe ukubala ixabiso lokufudumeza.I-grille ihamba nge-spiral ukusuka kwincopho ye-wave kwaye ilungiswe kwiqondo lokushisa eliphakathi.Xa iqondo lokushisa lifikelela kuma-600 ukuya kuma-700 degrees, isando sibekwe emphethweni wendawo yokufudumala, kwaye i-sledgehammer isetyenziselwa ukubetha isando, ukwenzela ukuba isinyithi kwindawo yokufudumala igxininiswe, kwaye i-contraction yokupholisa iyancipha.Uxinzelelo olugqithisileyo lokunciphisa kufuneka lugwenywe ngexesha lokulungiswa.Emva kokulungisa ichaphaza elinye, inqaku lesibini le-crest liyafudumeza, njengoko kungasentla.Ukukhawulezisa izinga lokupholisa, intsimbi ye-Q235 ingaba ngamanzi apholileyo.Le ndlela yokulungisa yeyendlela yokufudumeza ichaphaza, kwaye ukuhanjiswa kweendawo zokufudumeza kunokuba yiplamu okanye amachaphaza ashinyeneyo.Qaphela ukuba ungagqithi kwii-750 degrees.
Iinkqubo zokulungisa iifillet welds
Ii welds zefillet
ICandelo 5.23 lohlelo luka-2015 lwe-AWS D1.1 lijongene nezibonelelo malunga neeprofayili ezamkelekileyo nezingamkelekanga.Xa ubukhulu be-fillet weld bukhulu kakhulu ngenxa yokungakhathali, izibonelelo zeprofayili ye-welding ezidweliswe kwiCandelo 5.23 ziya kuqondwa kakubi.Ngokutsho kwe-American Steel Structure Association, ukucinga ukuba isinyithi esigqithisiweyo se-weld asiphazamisi ukusetyenziswa kwesiphelo selungu, ngaphandle kokulungisa i-fillet weld, kunokubangela imiphetho ye-angular ye-weld ye-fillet (nokuba kwicala elinye okanye macala omabini. ) ukuba bukhulu kakhulu.Ukuzama ukususa i-weld metal engaphezulu echazwe ngasentla kunokubangela ukuncipha, ukuguqulwa kunye / okanye ukuphuka kwe-weld.Ukuphathwa kobume be-fillet weld kuya kulandela iimfuno ezifanelekileyo ezichazwe kwiCandelo 5.23.1 lohlelo luka-2015 lwe-AWS D1.1.
Ziziphi iimeko zendibano ezamkelekileyo zokwenza ikhonkco lekona?Icandelo 5.22.1 lohlelo luka-2015 lwe-AWS D1.1 lichaza ukuba ukucocwa kweengcambu okuvumelekileyo akukwazi ukudlula i-1.59mm (1/16 in.) ngaphandle kokuguqulwa.Ngokubanzi, ukuba ubungakanani be-weld buyanda ngokunyuka kwendawo yeengcambu okanye ukuba kubonakaliswe ukufumana i-angle efunekayo ye-concave efunekayo, i-gap evumelekileyo yeengcambu ithathwa ukuba ayidluli i-4.76mm (3/16 in.).Ngobunzima obudlulayo okanye obulingana no-76.2mm (3 in.) Kwiipleyiti zensimbi, ixabiso elivumelekileyo lokucoca ingcambu yi-7.94mm (5/16 in.) xa usebenzisa iipads ezifanelekileyo.
Ixesha lokuposa: Jun-06-2022