Litsela tsa ho Rarolla Mathata a Khethehileng a Ductile Iron Castings e Kholo
Ho na le mefuta e mengata ea likarolo tse kholo tsa tšepe tsa ductile, joalo ka: enjene e kholo ea enjene ea disele, setsi se seholo sa mabili, sekoaelo se seholo sa leloala la bolo, sebali se futhumatsang sebōpi, foreimi e kholo ea leloala, mochini o moholo oa mochini oa ente, lebili la lisebelisoa tsa matla a moea le metheo le litanka tsa slag tsa lisebelisoa tsa matla a nyutlelie, jj. Ntle le lisebelisoa tsa mochini tse boletsoeng maemong, likarolo tsena li na le litlhoko tse ikhethileng tsa ts'ebetso, joalo ka khatello e tlase ea mocheso e hlokahalang bakeng sa matla a moea. castings, le maemo a mangata a ho amohela a khethehileng bakeng sa litanka tsa slag tsa nyutlelie. Ka hona, tlhahiso ea li-castings tsena e tlameha ho nahanoa ka hloko esale pele.
1) Ntho ea pele eo u lokelang ho e nahana ke ho fumana molumo o teteaneng, o teteaneng ebile o tšoaneleha
Ts'ebetso ea tekheniki ea ho hlahisa likarolo tse kholo tsa tšepe tsa spheroidal graphite li entsoe ka mokhoa o ts'oanang le oa likarolo tsa tšepe tse bohlooho, ha feela khetho ea sekala le moralo oa botlolo li fetotsoe hanyane ho latela litšobotsi tsa spheroidal graphite cast tšepe.
2) Taba ea bobeli, mosebetsi o tsamaellanang o lokela ho etsoa bakeng sa litšobotsi tse tloaelehileng tsa li-castings tse kholo tsa ductile
Karolo e tloaelehileng ea li-castings tse kholo tsa ductile ke hore li boima haholo. Bongata ba tsona li hloka mofuta oa ferrite, thepa ea mochini e tlameha ho fihlela lintlha tse tloaelehileng, 'me ka linako tse ling litlhoko tsa ts'ebetso ea mocheso o tlase lia eketsoa.
Mathata a khethehileng tlhahiso ea li-castings tse kholo tsa ductile
Ka lebaka la ho futhumala butle ha likarolo tsa tšepe tse kholo tsa ductile, nako ea ho tiisa eutectic e telele ho feta lihora tse 'maloa. Nakong ena, sebopeho sa mantlha sa tšepe ea ductile se tla theoa. Ka hona, ho hlaha letoto la mathata a ikhethileng ka likarolo tse kholo tsa tšepe ea ductile kapa likarolo tsa tšepe tse kholo tsa ductile. : Palo e nyane ea enke ea nodular, bophara bo boholo ba enke ea nodular, khopamiso ea enke ea nodular, graphite e phaphametseng, khethollo ea lik'hemik'hale, li-carbide tsa intercrystalline, le chunky graphite (Chunky Graphite), jj. Mathata ana haesale a hohela tlhokomelo. Le ha mochini oa sebopeho o sa kopane, ho nkuoe mehato ea pele ho rarolla mathata a itseng.
Potso e 'ngoe ea bohlokoa ke hore na re ka fihlela joang le ho rarolla litlhoko tsa khatello e tlase ea mocheso? Ho iketsahaletse feela ha bothata ke hore litsamaiso le mehato ea ho rarolla mathata ana a mabeli li batla li lekana.
Litsela tsa ho rarolla mathata a ikhethileng a li-castle tse kholo tsa ductile
1) matlafatsoa tsidifatso ho potlakisa solidification
Ho na le likhopolo tse peli tse amoheloang ka kakaretso ka sesosa sa graphite e arohaneng: e 'ngoe e bakoa ke ho silakanngoa ha spheroidal graphite; e 'ngoe ke hore botsitso ba khetla ea austenite boa fokotseha ka lebaka la phallo ea mocheso kapa karohano ea likarolo tse ling tsa alloying, haholoholo Ce le La. E baka mokhoa oa kholo ea enke ea spheroidal ho fetoha le ho theha. Ho sa tsotelehe khopolo-taba kapa khopolo-taba, ho na le bonnete ba hore nako e telele haholo ea ho tiisa (ke ho phola butle) sethaleng sa eutectic ke ntlha e tobileng ebile e le sepheo sa ho theoa ha graphite e arohaneng. Ka hona, ho sa tsotelehe mokhoa o amoheloang, ha feela nako ea sethala sa ho tiisa e ka khutsufatsoa, ponahalo ea graphite e arohaneng e ka thibeloa ka nepo.
Ho ea bontšoa hape libukeng hore ho na le sekhahla se matla sa ho pholisa (0.8 ℃ / min) bakeng sa ho khopama ha enke ea spheroidal. Ho khopama ha graphite ka linako tse ling ke ts'ebetso e sa lebelloang, ka hona ho potlakisa ho pholisa, ho khutsufatsa nako ea ho tiisa, haholo ho khutsufatsa nako ea ho tiea ha sethala sa eutectic, fumana mekhoa ea ho khutsufatsa sethala sa solidification sa eutectic ho fihlela tlase ho 2 h, e nang le phello e kholo. Ho na le mehato e mengata e potileng molao-motheo ona: ho qobelloa ho pholisa; tšepe e leketlileng lehlabathe; ts'ebeliso ea tšepe e batang joalo joalo.
Mocheso o phahameng oa mocheso oa tšepe e batang, haholoholo mocheso o matla oa ho boloka mocheso, o nkuoa e le mohato o matla o ka sebelisoang. Mocheso oa graphite o phahame ho feta oa tšepe e kentsoeng ka lehlabathe (45W / m • ℃ le 17 W / m • ℃ ka ho latellana), empa matla a eona a ho boloka mocheso a tlase ho feta a tšepe e chilled. Haeba ho na le pholiso e qobelloang, graphite e sebelisoa ho bapisa. loketseng. Bakeng sa ho akheloa ha tšepe e kholo kapa e kholo ea ductile, ho futhumatsa ka qobello e ntse e le mohato o matla. Ka kakaretso, ho ka sebelisoa lisebelisoa tse pholileng moeeng, tse pholileng moholi kapa tse pholileng ka metsi, esita le ho futhumatsa ha naetrojene e metsi ho ka sebelisoa ho akofisa sekhahla sa ho tiisa ha li-castings. Litaba li bonts'a hore ha tšepe ea ductile ea 20 t e sebelisitseng tšepe ea tšepe e tiisitsoe, phello ea phetisetso ea mocheso ke: tšepe ea mofuta oa tšepe e etsang likarolo tsa 58%, graphite le hlobo ea lehlabathe (karolo ea mantlha) li nka likarolo tsa 3.5%, le hlobo ea lehlabathe le lisebelisoa tse ling li monya mocheso. Mocheso o bile le 3.5%, 'me mocheso o pholileng oa metsi o futhumetse ka 3.5%. Ho ka bonoa hore hlobo ea tšepe e ka tsamaisa mocheso o fetang oa 50%, ha karolo ea mantlha e fetisa mocheso o monyane. Ho hlakile hore ho qobelloa ho futhumatsa hoa hlokahala.
2) Ntlafatsa theknoloji ea ts'ebetso
(1) Khetha ka hloko lisebelisoa tse tala
Bakeng sa ho hlahisa likarolo tsa tšepe tsa boleng bo phahameng tsa boleng bo phahameng, ho bohlokoa ho khetha tefiso ea sebopi ho sa tsotelehe. Lintho tsa ho kena-kenana le lisebelisoa tse tala li lokela ho ba tlase kamoo ho ka khonehang. Tlhokomelo e khethehileng e lokela ho fuoa mohloli oa tšepe ea kolobe, mofuta oa tšepe e setseng, le khetho ea li-recarburizers.
(2) Moralo oa sebopeho sa lik'hemik'hale
CE ha ea lokela ho ba holimo haholo (4.2% ~ 4.3%), haeba w (C) ke 3.6% ~ 3.7%, w (Si) e tlameha ho ba tlase ho 1.8% ~ 2.0%; Ntle le moo, w (Mn) <0.3%, w (P) le w (S) le tsona li lokela ho thibeloa ka thata. Ntle le maemong a ikhethileng, lits'epe tse kopantsoeng hangata ha li sebelisoe, kahoo tšepe e setseng e tlameha ho khethoa ka tieo.
Tlase w (Si) e tlameha ho fihlelleha, ho seng joalo graphite e arohaneng e tla hlaha habonolo, mme ts'ebetso ea mocheso o tlase e ke ke ea fihlela litlhoko. Bothata bo ho tlase w (Si) kapa tlase w (Si) Le mafu a hlahang. Sebopeho sa lijana tsa peterole tse sebelisitsoeng lithane tse 100 Japane ke: w (C) 3.6%, w (Si) 2.01%, w (Mn) 0.27%, w (P) 0.025%, w (S) 0.004%, w ( Ni) 0.78%, w (Mg) 0.065%.
(3) Khetha ho qhibilihisa habeli
Ho qhibilihisa ha Duplex ho ka fana ka papali e felletseng ho matla a matla a koporo ea tšepe e qhibilihisitsoeng le ts'ebetso e phahameng ea mocheso oa sebopi sa motlakase. Tshepe e qhibilihisitsoeng e tlameha ho lokolloa ka mocheso o phahameng, 'me S e ka tlosoa ha ho khonahala, mme nako ea sebopi sa motlakase ha ea lokela ho ba telele haholo. Mocheso oa spheroidization o khethoa ho latela maemo, 'me o ka se be holimo haholo kapa o tlase haholo.
Sengoli se khothaletsa hore se se sebelise mokhoa oa ho hohola bakeng sa spheroidization ea likotoana tse kholo hobane ho nka nako e telele haholo. Bonyane sebelisa mokhoa o koahelang, haholo-holo mokhoa o ikhethileng kapa mokhoa oa phepelo ea silika. Silika e fepeloa sebakeng se tsitsitseng, mme e ka fepuoa hammoho le silika e nonneng. Se ke oa sebelisa lisebelisoa tse atisang ho sebelisoa tsa spheroidizing. Ho molemo ho kopanya lisebelisoa tse boima tsa "spheroidizing" tsa lefats'e le lisebelisoa tse bobebe tsa lefats'e tsa spheroidizing. Haeba sesebelisoa sa spheroidizing se sebelisoa, w (Mg) 6% le w (RE) 1.0% ho 1.5% li lekane; haeba tšepe ea kolobe e batla e hloekile, w (RE) 0.5% ho 1.0% le eona ea amoheleha. Haeba mokhoa oa ho fepa ka terata o sebelisoa, moemeli oa spheroidizing ea nang le palo e phahameng ea w (Mg) a ka sebelisoa, empa w (RE) e lokela ho ba tlase, ka Ca e nyane.
Mocheso o tšollang o lokela ho ba o loketseng (1300 ~ 1350 ℃), e seng holimo haholo, ho seng joalo mokelikeli o tla ba kholo haholo; ho eletsoa ho sebelisa semathi se qhalakaneng se ka hare bakeng sa ho tšela ka lebelo le mahareng, le ho sebelisa hlobo e thata-thata ka hohle kamoo ho ka khonehang ho sebelisa katoloso ea graphitization molemong oa ho iphepa ka tšepe ea ductile. , Ho fokotsa moroalo ho riser le ho netefatsa ho ts'oarana kahare ha ho betsa.
(4) Ela hloko bothata ba bokhachane
Inoculation ke e 'ngoe ea mehato ea bohlokoahali ea mahlale. Ke feela ka ho rarolla bothata bona moo ho ka khonehang ho netefatsa litaba tse tlase tsa (Si) ntle le mathata, le ho netefatsa ts'ebetso ea mocheso o tlase. Bothata ba ho entoa ha se letho haese khetho ea liente tsa kalafo le mekhoa ea kalafo ea ente. U ka khetha ente e nang le ente e telele, joalo ka moemeli ea nang le Ba (Sr-containing agent e sebetsa hantle bakeng sa tšepe ea bohlooho le Ca e tlase), inoculant e nang le graphite, kapa motsoako o nepahetseng oa RESiFe ka inoculant .
Hajoale, lik'hamphani tse ngata li na le ente e iketselitseng, 'me ke nahana hore ba latela molao-motheo ona. Ka bokhutšoanyane, "poloko" e tlameha ho lieha, empa hanghang ", ha se phello e ntle feela, empa le litekanyetso li ka fokotsoa haholo. Mokhoa oa khale, joalo ka ho koahela nakong ea kalafo, o na le phello e mpe haholo, empa w (Si) e theotsoe. Bothata hona joale ke hore haeba w (Si) e lokela ho ba tlase mme litlamorao e be tse ntle, tsela feela ea ho tsoa ke ho fetola mokhoa. Linnete li pakile hore 2.0% ea w (Si) ea khonahala, mme sesupo sa katleho ke hore graphite e lokela ho ba nyane le ho ba kholoanyane. Haeba e nyane, sekhahla sa spheroidization se tla ba holimo. Haeba e le nyane, ha ho na samente e tla hlahisoa. Haeba e nyane, tekanyo ea khethollo e tla ba bobebe. Bakeng sa likarolo tse kholo, haeba palo ea libolo tsa graphite e le likotoana tse 200 / mm2 kapa ho feta, 'me boholo e le 5-6, sekhahla sa spheroidization le palo ea ferrite ka tlhaho e ke ke ea ba bothata. Ka bokhutšoanyane, mokhoa o ka sehloohong oa ho loants'a graphite le ho loanela graphite e nyane le ho feta ke ka ho enta. W (Si) e tlase, 'me ha ho na samente e sa lefelloeng, polasetiki le ho ba thata ha tšusumetso mochesong oa kamore le mocheso o tlase ho feta habonolo. Bakeng sa li-castings tse kholo, ho bonolo ho etsa tšebetso e kholo ea ente ka senoelong se tšolleloang le ho beha sethibelo sa ente semathi. Bothata ke hore ho tlameha ho ba le mohopolo o nepahetseng.
Ts'ebeliso ea lits'epe tse kopantsoeng le likarolo tsa tšalo-morao
Ntho feela ea ho kopanya litšepe e ka nkoang e ka sebelisoa ts'ebetsong ea tšepe e kholo ea ductile ke Ni, ka lebaka la phello ea eona e ikhethang. Ho latela pono ea mahlale, w (Ni) <1% e na le molemo, empa hore na ea sebelisoa kapa che e ipapisitse le maemo a ikhethileng le likhopolo tsa moruo.
Lisebelisoa tsa Microelements li na le boiphihlelo ba ho holisa tsebong linthong tse kholo ke Bi le Sb. Ho lumeloa hore eketsa w (Bi) Sb e ka sebelisoa le likarolong tse teteaneng le tse kholo. Batho ba bang ba nahana hore e tla eketsa palo ea liperela, empa batho ba bang ba e sebelisa ka tšepe ea ferritic ductile. E kanna ea ba bothata le chelete, mme palo ea 0.008 ppm ha ea lokela ho ba bothata. Moprofesa Zhou Jiyang o kile a supa hore ho sebelisa w (Sb) 0.010% ~ 1.4% le hona ho ka thibela litlamorao tse mpe tsa Ti le RE ka tšepe e qhibilihisitsoeng.
Le ha maikutlo a indasteri mabapi le karolo le mochini oa tlatsetso ea Bi le Sb a ntse a sa kopane, tumellano e se e thehiloe mabapi le ho eketsoa ha Ni.
(6) Karolo ea ts'ebetsong pele ho nako e bohlokoa
Phekolo ea pele ea tharollo ea tšepe ea nodular ea tšepe e nang le moemeli oa kalafo ea "graphite" pele ho spheroidization e na le phello e ntle ea ho ntlafatsa le ho tsitsisa boleng ba castings [3]. Mekhoa e ka tlase:
Kamora ho hlophisa sebopeho [kalafo ea kalafo e tlil'o etsoa pele e tla eketsa w (C) ka 0.2%] → de-S → khutlela seboping sa motlakase → eketsa 0.2% ho 0.25% ea moemeli oa kalafo ea pele ha 1/4 ea molumo e eketsoa → khutlela seboping sa motlakase le joale eketsa mocheso hanyane hanyane ho 1 470 ~ 1 480 ℃ → kalafo ea spheroidizing → kalafo ea inoculation (Ultraseed e fumaneha) → ho tšeloa.
(7) Ts'ebeliso ea moemeli oa anti-crater QKS
Moqapi o lumela hore ho na le 1 μm kenyelletso ea kantle ho naha bohareng ba enke ea spheroidal, e etsang mokokotlo oa mekato e 'meli; lera le ka hare ke MgS, CaS (0.5 μm), 'me lera le ka ntle ke MgO, SiO, le silicate. Ka hona, moqapi o kentse palo e itseng ea O le S ho ente hore e kopane le lisebelisoa tsa tšepe tse kenngoeng ka har'a ente ho hlahisa li-sulfide tse ngata le li-oxide, ka ho etsa joalo li-cores tsa graphite tse hlahisang Ferrosilicon inoculant ea Ca, Ce le S, O. Ts'ebetso ena e ka eketsa palo ea likarolo tsa graphite, 'me e kenella qetellong ea kristallishene, mme nako ea morao-rao ea katoloso ea graphitization e ka koala sekhahla qetellong ea tiiso. Haholo-holo, e sebetsa hantle haholo bakeng sa shrinkage porosity ea libaka tse chesang tsa lehae [4]. Teko e bonts'itse: bakeng sa litepisi tse kenang tsa liteko tsa 5-40 mm, ha SrSiFe e sebelisoa, libolo tsa graphite lia fokotsoa ho tloha 300 / mm2 ho isa ho 150 / mm2; ha moemeli oa Ca-Ce-OS a sebelisoa, palo ea libolo tsa graphite ha e angoe ke botenya ba lebota. Ha e bapisoa le BaSiFe le 75SiFe. Sekoli sa shrinkage manonyellong a chesang a sefapano sa liteko se bontša hore ho na le masoba a shrinkage manonyellong a chesang a karolo ea sefapano le ente e nang le Ba le Sr, ha moemeli oa Ca-Ce-OS a sa etse joalo.
Ka kopo boloka mohloli le aterese ea sengoloa sena hore se hatisoe hape: Litsela tsa ho Rarolla Mathata a Khethehileng a Ductile Iron Castings e Kholo
Khamphani ea Minghe Casting e nehetsoe ho etsa le ho fana ka boleng bo phahameng le likarolo tse phahameng tsa ho lahla likarolo (likarolo tsa tšepe tsa die die li kenyelletsa haholo Thining-Wall Die Casting,Hot Chamber Die lahla,Cold Chamber shoa lahla), Tšebeletso e chitja (Die Casting Service,Cnc Machining,Ho Etsa Mofuta, Bokaholimo Phekolo) .Na tloaelo efe kapa efe ea Aluminium die die cast, magnesium kapa Zamak / zinc die casting le litlhoko tse ling tsa castings lia amoheleha ho ikopanya le rona
Tlas'a taolo ea ISO9001 le TS 16949, lits'ebetso tsohle li etsoa ka mechini e makholo ea li-die casting, mechini e 5-axis le lits'ebeletso tse ling, ho tloha ho li-blasters ho isa mechini ea ho hlatsoa ea Ultra Sonic. sehlopha sa baenjiniere ba nang le boiphihlelo, lisebelisoa le bahlahlobi ho etsa moralo oa moreki o phethahala.
Moetsi oa konteraka oa li-cast cast. Bokhoni bo kenyelletsa likarolo tse batang tsa aluminium die die likarolo tsa 0.15 lbs. ho isa ho li-6 lbs., Ho theha phetoho e potlakileng, le machining. Litšebeletso tse kenyellelitsoeng boleng li kenyelletsa ho bentsa, ho thothomela, ho qhekella, ho phatloha ha lithunya, ho penta, ho roala, ho roala, kopano le lisebelisoa. Lisebelisoa tse sebelisitsoeng le tsona li kenyelletsa lits'epe tse kopantsoeng tse kang 360, 380, 383 le 413.
Zinc e shoa ho lahla thuso ea moralo / lits'ebeletso tsa boenjineri tse tšoanang. Moetsi oa moetlo oa li-castings tsa zinc tse nepahetseng. Li-castings tse nyane, li-castings tse phahameng tsa khatello, li-cast cast tsa hlobo, li-castings tse tloaelehileng tsa hlobo, li-unit tsa die le li-cast cast tse ikemetseng le li-cast cast tse tiisitsoeng li ka etsoa. Li-castings li ka etsoa ka bolelele le bophara ho fihlela 24 ho. Ho +/- 0.0005 ho. Mamello.
ISO 9001: Moetsi ea netefalitsoeng oa 2015 oa magnesium ea die die, Bokhoni bo kenyelletsa khatello e phahameng ea khatello ea magnesium die cast to 200 ton room & 3000 kamoreng e batang, moralo oa lithulusi, polishing, molding, machining, powder & liquid paint, QA e felletseng e nang le bokhoni ba CMM , kopano, ho paka le ho tsamaisa.
ITAF16949 e netefalitsoe. Ts'ebeletso e 'ngoe ea ho lahla e kenyeletsa ho lahla lichelete,ho lahla lehlabathe,Matla a khoheli, Lahlehileng bubble lahla,Ho ts'oaroa ha Centrifugal,lephaka lahla,Sa Feleng hlobo lahlaBokhoni bo kenyelletsa EDI, thuso ea boenjiniere, ho etsa mohlala o tiileng le ho sebetsoa ka bobeli.
Lahla Liindasteri Liphuputso tsa likarolo tsa likarolo tsa: Likoloi, libaesekele, lifofane, liletsa tsa 'mino, sesepa sa metsi, lisebelisoa tsa Optical, li-sensor, mehlala, lisebelisoa tsa elektroniki, masaka, lioache, mechini, lienjine, thepa ea ka tlung, mabenyane, mabenyane, telecom, mabone, lisebelisoa tsa bongaka, lisebelisoa tsa litšoantšo, Liroboto, Litšoantšo tse betliloeng, Lisebelisoa tsa molumo, Lisebelisoa tsa lipapali, Lithulusi, Lipapali le tse ling.
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