1. Ukwethulwa kweshidi elijwayelekile eligoqelwe ngokubanda liwumkhiqizo otholakala eshidini eligoqwe elishisayo ngokucubungula ingcindezi ebandayo.
Ngenxa ye-multi-pass cold rolling, ikhwalithi ephezulu ingcono kuneshidi elishisayo, futhi izakhiwo ezinhle zemishini zingatholakala ngemva kokwelashwa kokushisa.
1. Ukuhlelwa kokusetshenziswa kwamashidi ajwayelekile agoqekayo abandayo Ngokwezidingo ezahlukene zabakhiqizi, amashidi agoqelwe ngokubanda ngokuvamile ahlukaniswa abe: amashidi ajwayelekile agoqekayo, amashidi agoqelwe abandayo esigaba sokugxiviza, umdwebo ojulile, ojulile- umdwebo kanye namashidi agoqeke ajule kakhulu, Ngokuvamile alethwa ngamakhoyili nangamashidi ayisicaba, ubukhulu buvezwa ngamamilimitha, ububanzi buvamise ukuba ngu-1000mm no-1250mm, kanti ubude ngokuvamile bungu-2000mm no-2500mm.
2. Amamaki avamile wamakhasi ajwayelekile agoqeka ngokubanda yilawa: Q195, Q215, Q235, 08AL, SPCC, SPCD, SPCE, SPCEN, ST12, ST13, ST14, ST15, ST16, DC01, DC03, DC04, DC05, DC06, njll. .;I-ST12 : ibonisa ibanga lensimbi elivame kakhulu, elifana ngokuyisisekelo ne-Q195, SPCC, DC01 amamaki;I-ST13/14: ikhombisa izinga lokunyathela lensimbi, elifana ngokuyisisekelo nebanga le-08AL, SPCD, DC03/04;I-ST15/16: ikhombisa ukuthi iyinsimbi yebanga lokunyathela, ngokuyisisekelo ifana ne-08AL, SPCE, SPCEN, DC05/06 amamaki.
3. Indlela yokumelela usayizi webanga leshidi eligoqiwe elibandayo elivamile, njenge-ST12 elikhiqizwe i-Anshan Iron ne-Steel, 1*1250*2500/C, evezwe njengokuthi: grade ST12 ishidi elibandayo elivamile, ukujiya 1mm, ububanzi 1250mm, ubude. 2500mm noma C ikhoyili.Ukubukeka kuhlanganiswe kahle ngensimbi emhlophe, futhi izakhiwo zemishini zingamamaki ensimbi ajwayelekile futhi ayisisekelo, angasetshenziswa kuphela ukugoba nokubumba, hhayi ukugxiviza.Isetshenziselwa ukulunywa ngomshini, njengamagobolondo esiqandisi, amathangi kaphethiloli wemoto, njll. Imikhiqizo engaphezulu kwe-ST13 isetshenziswa ezimbonini ezidinga ukudweba okujulile, njengokukhiqiza izimoto, amathangi kaphethiloli ezinjini zikadizili, njll. Uhlobo oluthile oluzosetshenziswa luncike ku izidingo ezijulile zokudweba.
Umehluko phakathi kwe-ST12 ne-SPCC: Izakhiwo zemishini zemikhiqizo emibili zicishe zifane, kodwa indlela yokudonsa ihlukile.Izakhiwo eziqinile zezinto ze-ST12 zinamandla kune-SPCC.Okokusebenza okujwayelekile kwaseJapane kwe-JIS okusho ukuthi i-SPCC—S isho insimbi (Insimbi), u-P usho ipuleti (Ipuleti), u-C usho ukubanda (Okubanda), u-C usho ukuthi ezentengiso (Ezohwebo), okuyizinga le-JIS lesiJapane.Ukuqinisekisa amandla aqinile, engeza u-T ekupheleni kwebanga: SPCCT.I-SPCD—imele ishidi lensimbi egoqelwe ebandayo kanye nomugqa wokugxiviza, olingana ne-China 08AL (13237) yensimbi yekhwalithi ephezulu ye-carbon structural.I-SPCE—imele ishidi lensimbi yensimbi egoqelwe ebandayo kanye nomugqa womdwebo ojulile, olingana nensimbi yokudweba ejulile yase-China 08AL (5213).Ukuze uqinisekise ukungabi nesikhathi, engeza okuthi N ekupheleni kwebanga ukuze kube yi-SPCEN.Ishidi lensimbi yensimbi egoqelwe ebandayo kanye nekhodi yokucisha kanye nekhodi yokufudumeza: isimo se-annealing ngu-A, ukucisha okujwayelekile kanye nokushisa kungu-S, ukuqina okungu-1/8 kungu-8, 1/4 ubulukhuni 4, 1/2 ubulukhuni 2, futhi ubulukhuni obugcwele 1. Ikhodi yokucutshungulwa okungaphezulu: ukugoqa kokuqeda okubuthuntu kungu-D, ukugoqa kokuqedwa okugqamile kungu-B. Isibonelo, i-SPCC-SD imele ishidi lekhabhoni eligoqelwe ngenjongo evamile elinokucisha okujwayelekile kanye nokuthambisa kanye nokuginqika kokuphothula kwe-matte.Esinye isibonelo i-SPCCT-SB, okusho ukucisha nokushisa okujwayelekile, ukucutshungulwa okukhanyayo, neshidi lekhabhoni eligoqelwe ngokubanda elidinga izakhiwo eziqinisekisiwe zokusebenza.Esinye isibonelo i-SPCC-1D, emele ishidi lensimbi yensimbi ye-matte eqinile egoqelwe ebandayo.
Indlela yokumelela yezinga lensimbi yesakhiwo somshini yile: S + carbon content + ikhodi yezinhlamvu (C, CK), lapho okuqukethwe kwekhabhoni kuvezwa inani eliphakathi * 100, uhlamvu C lumele ikhabhoni, futhi uhlamvu K lumele insimbi. for carburizing.Njengekhoyili ye-carbon knot S20C, okuqukethwe kwayo kwekhabhoni kungu-0.18-0.23%.Incazelo yezinto ezijwayelekile zesiShayina ze-GB ihlukaniswe ngokuyisisekelo: Q195, Q215, Q235, Q255, Q275 njalonjalo.U-Q umele uhlamvu lokuqala lwe-pinyin yesiShayina lwegama elithi "Qu" lephoyinti lokukhiqiza lensimbi, futhi u-195, 215, njll. umele inani lephoyinti lokukhiqiza.Mayelana nokwakheka kwamakhemikhali, amamaki ensimbi ekhabhoni ephansi: Q195, Q215, Q235, Q255, Q275 Uma kuphezulu okuqukethwe kwekhabhoni nokuqukethwe kwemanganese, ipulasitiki yayo izinzile.
2. Ukwethulwa kweshidi lensimbi elicwebezelayo elishisayo (isiliva elimhlophe) likhiqizwa inqubo eqhubekayo yokufaka i-hot-dip galvanizing nge-hot-rolled steel strip noma i-cold-rolled steel strip njenge-substrate, engavimbela ingaphezulu lepuleti lensimbi elincanyana nensimbi. khumula ekugqwaleni nasekugqwaleni.Amashidi ama-hot-dip galvanized ahlinzekwa ngamapuleti angama-rectangular flat ngemva kokunqunywa;amakhoyili amakhoyili ediphu ashisayo anikezwa ngamakhoyili ngemva kokugoqa.Ngenxa yama-substrates ahlukene asetshenziswayo, amashidi ensimbi ashisayo angahlukaniswa abe amashidi namakhoyili agaywe ashisayo kanye namashidi namakhoyili afakwe emanzini abandayo, asetshenziswa kakhulu ekwakheni, izinto zikagesi zasendlini, izimoto, iziqukathi, ezokuthutha kanye nezimboni zasendlini.Ikakhulukazi ekwakhiweni kwesakhiwo sensimbi, ukukhiqiza izimoto, ukukhiqiza amawindi ensimbi nezinye izimboni.
1. Izici zeshidi lensimbi elishisayo-dip liqinile ukumelana nokugqwala, ikhwalithi enhle yendawo, ilungele ukucutshungulwa okujulile, ukonga nokusebenziseka, njll.
2. Ukuhlukaniswa kanye nezimpawu zamashidi ensimbi ashisayo-diphu ahlukaniswe yaba: inhloso evamile (PT), ukusebenzelana komshini (JY), umdwebo ojulile (SC), ukuguga komdwebo ojulile (CS), isakhiwo (JG) ngokusho ukusebenza kokucubungula;Isisindo sihlukaniswe: indawo ehlanzekile ye-zinc ihlukaniswe: 100/100 (isisindo se-zinc layer singaphansi kuka-100g/m2), 120/120, 200/200, 275/275, 350/350, 450/450, 600/600 ;i-zinc-iron alloy surface Ihlukaniswe yaba: 90/90 (isisindo se-zinc-iron alloy layer singaphansi kuka-90g/m2), 100/100, 120/120, 180/180;ngokusho kwesakhiwo esingaphezulu: i-spangle Z evamile, i-spangle X encane, i-spangle ebushelelezi GZ, i-Zinc-iron alloy XT;Ngokusho kwekhwalithi ephezulu, ihlukaniswe ngokuthi: Iqembu (I), iqembu le-II (II);Ngokunemba kwe-dimensional, ihlukaniswe yaba: ukunemba okuthuthukisiwe A, ukunemba okuvamile B;Ngokusho kokwelashwa okungaphezulu, ihlukaniswe ngokuthi: i-chromic acid passivation L, i-coating Amafutha Y, i-chromic acid passivation kanye namafutha LY.
I-Baosteel hot-dip galvanized steel sheet: I-Baosteel Phase II I-Hot-dip Galvanizing Isigaba II I-hot-dip galvanizing ye-Baosteel ikhiqizwa ngokucwiliswa okuqhubekayo kwe-tandem ebandayo noma insimbi egoqiwe eshisayo ye-tandem ka-2030 ngenjongo evamile noma ukusetshenziswa kwesakhiwo.
Ububanzi bokunikezwa kwesigaba sesibili se-hot-dip galvanizing: ukujiya (0.3-0.3) ububanzi (800-1830) ubude (ipuleti 1000-6000, ikhoyili ububanzi bangaphakathi 610) iyunithi mm.
Isigaba sesibili sokucwebezelisa idiphu eshisayo ihlukaniswe ngokwesakhiwo esingaphezulu: u-Z usho i-spangle esivamile, u-N usho i-spangle esiyiziro, u-X usho i-spangle esincane, kanti u-G usho i-spangle esibushelelezi.
I-galvanizing yesiteji sesibili se-hot-dip galvanizing ihlukaniswa ngokuphathwa kwendawo: L isho i-chromic acid passivation, Y isho ukugcoba, i-LY isho ukuthi i-chromic acid passivation + ukugcoba ikakhulukazi ukunciphisa noma ukugwema ukugqwala okumhlophe ngesikhathi sokuthutha noma ukugcinwa.