Ts'ebetso ea ho Qhibilihisoa ea Sesepa sa Ductile sa Iron

Nako ea ho Hatisa: 07 / 01 2021 Mongoli: Mohlophisi oa Setsi Etela: 11581

Ts'ebetsong ea moetlo oa tšepe ea ductile, hoo e ka bang 10% ea lisebelisoa tsa khabone hangata e sebelisoa bakeng sa metsoako. Sengoloa sena se sebetsana feela le lintlha tse ling tse lokelang ho tsotelloa ka ho khetheha ts'ebetsong kamora ho eketsa karolo ea khalase ea khabone e sebelisitsoeng ho hlahiseng tšepe ea ductile seboping sa ho kenya. Ho ea ka tšebetso ea tlhahiso, sengoli se hlahisa maikutlo a sona bakeng sa ts'ebeliso ea basebetsi-'moho.

Khetho ea tefiso

(1) Lisebelisoa tsa tšepe

Sesepa se sebelisitsoeng ho hlahiseng tšepe ea ductile e lokela ho ba sephephechane sa khabone. Ha ea lokela ho ba le likarolo tse sitisang graphitization, joalo ka chromium. Ha ea lokela ho ba le likarolo tsa anti-spheroidizing alloying. Makhopho a tšepe e setseng a lokela ho ba 30% ka sebopeho sa maqhubu a teteaneng, a ka behoang a bataletse seboping.

(2) Recarburizer

Coke ea boleng bo holimo. Sesebelisoa sa sebabole se lokela ho ba tlase, botenya ke 60-80mm, 'me e na le matla a holimo. E ke ke ea hatelloa ka mor'a ho chesoa.
EntSpent le literata eleketrode. Ho molemo ho ba le bolelele bo itseng ho nolofalletsa ho seha tšepe e qhibilihisitsoeng.

(3) Tšepe ea Tšepe

E sebelisoa haholo-holo ho fetola likarolo tsa khabone tsa tšepe e qhibilihisitsoeng. Ke ts'epa ho sebelisa tšepe ea kolobe e nang le sebabole se phahameng se nang le wC> 4%. Lintho tsa silicon tse tšepe ea kolobe li phahame ka mokhoa o nepahetseng, 'me tlhahiso ea tšepe ea nodular e ka ba ferrosilicon e tlase.

(4) Ho hlasimoloha ho hoholo

Moemeli oa spheroidizing le ente e sebelisoa ho latela mekhoa ea setso, 'me e ikemiselitse ho latela maemo a nnete a fektheri ka' ngoe.

Nyenya

Ts'ebetso ea ho qhibilihisa: Coke block + sephephechaneng sa tšepe → block ea eleketrode → keketseho ea mocheso → ntša coke block le block ea eleketrode → sampole le ho sekaseka likarolo tsa khabone → tšepe ea kolobe → thepa ea ho khutlisa → sampole le ho sekaseka Si, Mn → keketseho ea mocheso → ferromanganese + ferrosilicon → lero → Inoculation + spheroidization → ho tšela.　

Mehato ea ho itšireletsa nakong ea ts'ebetso ea ho qhibilihisa ke e latelang:

Coke block e kentsoe tlase seboping, sepheo ke ho theha nako e teletsana ea ho koala ea coke ka tšepe e qhibilihisitsoeng. Palo ea "coke block" e ka ba 5% ea lisebelisoa. Hoo e ka bang 50% ea litšila e ea qhibiliha, mme coke e lokela ho koaheloa ka sephephechaneng se teteaneng. Hape, hoa khoneha ho sebelisa li-block tsa elektrode tsa 60-80 mm ho fapana le coke e tla kenngwa tlase seboping joalo ka recarburizer, e nang le sebabole se tlase, se leng molemo haholo ho fumana tšepe ea boleng bo holimo ea ductile.
Karolo ea tšepe e setseng e sebelisoa haholo-holo ke bokhoni ba keketseho ea khabone. Bakeng sa bahlahisi ba qalang ho sebelisa mokhoa ona ho hlahisa tšepe ea ductile, ho ka ba 30% ho betere. Kamora ho ntlafatsa ts'ebetso ea kabo ea khabone, butle-butle eketsa karolo ea tšepe e setseng. Ts'ebeliso e fetelletseng ea tšepe e setseng, haeba ts'ebetso ea khabone e sa eketsehe, e tla ama carbon silicon e lekanang le sehlahisoa sa hoqetela.
Kamora hore tšepe e qhibilihisitsoeng, kenya molamu oa eleketrode ho eketsa mocheso hantle seboping le ho eketsa ts'ebetso ea khabone. Leha ho le joalo, mocheso oa sebōpi o phahame haholo, o eketsang ts'ebeliso ea motlakase hape o kotsi ho lera la sebopi.
Kamora hore khakanyo ea khabone e lekane ka ho lekana, ntša coke block le molamu oa eleketrode, 'me u hlahlobe le ho sekaseka likateng tsa khabone.
Ho latela sephetho sa tlhahlobo, bala palo ea tšepe ea kolobe e kenyellelitsoeng le palo ea ts'ebeliso ea tšepe ea ductile e sebelisitsoeng bocha.
Etsa qeto ea hore na kakaretso ea tšepe e entsoeng ka ho qhibilihisoa e ka etsoa ka thepa e nchafalitsoeng ho latela khakanyo ea dikahare tsa silicone.
Kamora hore thepa e futhumatsang e qhibilihe, nka sampole 'me u sekaseke litaba tsa Si, Mn le lisebelisoa tse ling tse kopantsoeng.
Eketsa mocheso oa tšepe e qhibilihisitsoeng hantle, tlatselletsa likarolo tse kopantsoeng ho latela sephetho sa tlhahlobo, 'me u kenye ferrosilicon pele sebōpi se fihla mocheso oa sebopi.
Ferrosilicon e qhibiliha ho ea boemong bo qhibilihisitsoeng 'me hang-hang e lokolloa sebōping.
Spheroidization, inoculation le ho tšolla li etsoa joalo ka tloaelo.

Palo ea phetoho ea sebopeho

Joalokaha bohle re tseba, litšobotsi tsa mochini oa tšepe ea ductile li its'etleha haholo ka sebopeho sa lik'hemik'hale, sekhahla sa ho futhumatsa (as-cast ductile iron) le ts'ebetso ea kalafo ea mocheso. Sebopeho sa lik'hemik'hale ke sesosa sa ka hare, motso le ho fetoha, hoo e batlang e le sebōpi se seng le se seng se fapane. Ka hona, ho hlokahala ho matlafatsa phumano ea likarolo tsa lik'hemik'hale le ho etsa liphetoho tse hlokolosi, 'me ha hoa lokela ho amohela "tlhahiso e lekantsoeng ea likhahla". Ka har'a lik'hemik'hale, kh'abone e lekanang e bohlokoa haholo. Haholo-holo, tšepe ea nodular e hlahisoang ka ho sebelisa litšepe e le tefiso e kholo, hobane ts'ebetso ea keketseho ea khabone e thata ho e laola, 'me khabone e lekanang e fetoha haholo, ka hona ho lokela ho lefuoa tlhokomelo e khethehileng ho lokisa khabone e lekanang.

Bala palo ea tšepe ea kolobe e ekelitsoeng. Bala palo ea tšepe ea kolobe e kenyellelitsoeng ho latela tlhahlobo ea boleng ba khabone. Ebile, ke ho fetola khabone e lekanang le tšepe ea nodular e le hore khabone e lekanang le qhibiliho e entsoeng ke tšepe ea kolobe le tšepe e fihlelle ho lekana le khabone e hlokehang bakeng sa tšepe ea tšepe ea nodular. lesela le ekelitsoeng
Palo ea palo e kenyellelitsoeng ea tšepe ea ductile e sebelisitsoeng bocha. Ka hona, kamora hore tšepe e futhumalitsoeng e kenyelletsoe, likarolo tsa khabone tsa tšepe e qhibilihisitsoeng sebōping sohle lia tšoaneleha. tshepe e ekeditswe
Khakanyo ea sekontiri sa silika Morero oa lipalo ke o latelang: Likahare tsa silicon ≈ ((litšepe tsa tšepe + tšepe ea kolobe + nodular cast iron) dikahare ke phahameng haholo, eketsa e nyenyane ea tšepe recycled ductile, 'me u sebelise palo e tšoanang ea tšepe ea kolobe le sephephechaneng ka karo-karolelano ea 100: 9 ho etsa tjhelete yohle qoso.
Palo ea Tlatsetso ea Ferrosilicon Tsela ea lipalo e tjena: Palo ea ferrosilicon e ekelitsoe = [kakaretso ea tefiso × lihlahisoa tsa silicon tsa ferrosilicon
Palo ea manganese le likarolo tse ling tsa alloying tse kenyellelitsoeng li baloa ka tsela e latelang: Palo ea tšepe ea alloy e ekelitsoe = paloyohle ea tefiso e kenyelelitsoe lipalo tse kaholimo.

Lebaka ke hobane tšepe ea nodular e qhibilihisoa seboping sa ho kenya, 'me likarolo ha li chesoe haholo,' me tšepe le eona e chesoa ho isa bohōleng bo itseng. Haeba u thulana le maemo a ikhethang, u lokela ho ela hloko ho chesa.

Mohlala oa kopo ea phetoho ea sebopeho:

U sebelisa sebōpi sa motlakase sa motlakase oa 1t ho hlahisa tšepe ea pearlitic ductile QT800-2, boima ba eona ke 1000kg.
"Sebopeho sa lik'hemik'hale sa taolo ke: wC = 3.5%, wSi = 2.5%, wMn = 0.5%, wP <0.07%, wS <0.02%, wMg = 0.03% ～ 0.06%, wRE = 0.02% ～ 0.04%.
Kamora ho ts'oaroa hape, likarolo tsa khabone tsa "tšepe e qhibilihisitsoeng" seboping ke 2.5%.
Palo ea tšepe ea kolobe e ekelitsoe = 300 × (3.5% -2.5%) / (4% -3.5%) = 600 (kg)
Palo ea tšepe ea nodular e sebelisitsoeng seboping = 1000-300-600 = 100 (kg)
Ho hakanngoa litaba tsa silicon = (300 × 0.3% ＋ 600 × 1.8% ＋ 100 × 2.5%) × 100% = 1.42%
Haeba likahare tsa silicon ea nodulizer e le 0.6% mme likahare tsa silicon tsa ente e le 0.4%, likahare tsa silicone tsa tšepe ea pele e qhibilihisitsoeng e lokela ho ba 1.5%, e leng holimo ho feta likhakanyo tsa silicone. Bakeng sa sena, tšepe ea Z18 e ka sebelisoa ho fetola khabone e lekanang, 'me tšepe ea ductile e nchafatsoang e ka sebelisoa ho etsa kakaretso ea tefiso.
Lintho tsa silicon ke 1.38% mme manganese ke 0.15% pele sebopi se lokolloa.
Ferrosilicon e kentse chelete = [1000 (2.5% -0.6% -0.4% -1.38%)] / 75% = 1.6kg
Ferromanganese e kenyellelitsoe palo = [1000 (0.5% -0.15%)] / 65% = 5.4kg

4. Lipolelo tse qetellang

Ha re hlahisa sebōpi sa motlakase se kenyang motlakase, re sebelisa tšepe e setseng ho hlahisa QT800-2, matla ke 800 ～ 1000MPa, mme bolelele bo feta 4%.

Hajoale, ho na le litšepe tse ngata tse sengoang 'marakeng, tšepe ea kolobe e theko e boima,' me tšepe ea kolobe ea boleng bo holimo e haella le ho feta. Ka hona, re fana ka maikutlo a hore baetsi ba nang le mesebetsi ea tšepe ea tšepe ba ka bua ka mohopolo o boletsoeng kaholimo le "ho kenya tšepe bakeng sa tšepe" ho hlahisa tšepe ea nodular.

Ka kopo boloka mohloli le aterese ea sengoloa sena hore se hatisoe hape:Ts'ebetso ea ho Qhibilihisoa ea Sesepa sa Ductile sa Iron

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