Khulisa Okuqukethwe Kwe-Ferrite Kwe-Ductile Iron

Ucwaningo lukhombisile ukuthi izakhiwo ezahlukahlukene ze-matrix zinomthelela omkhulu ekuqineni komthelela wokushisa okuphansi emazingeni okushisa ahlukahlukene, futhi i-ferritic ductile iron ene-plasticity ephezulu ingathola izinkomba zokuqina ezinzima

4.1.1 Ukwakheka kwamakhemikhali

Nciphisa izinto ezithuthukisa noma ezizinzisa ukwakheka kwe-pearlite, njenge: Mn, V, Zr, Nb, Ti, Cr, Mo, W, Cu, Pb, Sb nezinye izinto. Phakathi kwazo, kunezinto ezimbili okufanele uzisho, eyodwa yi-manganese, elungele i-spheroidal graphite. Ubulukhuni bomthelela kanye nokushisa okushisayo okuguqukayo kwensimbi yensimbi kunomphumela omubi kakhulu. Konke ukwanda kokungu-0.1% kokuqukethwe kwama-manganese kuzokhulisa ukushisa okushisayo okushisayo kwensimbi ye-ductile ngo-10 ℃ ～ 12 ℃. Ngakho-ke, zama ukukhetha insimbi yengulube ephansi ye-manganese nensimbi eyisicefe njengezinto zokusetshenziswa; Isici yi-Cu. Yize kuyisici esingathathi hlangothi, umphumela wokwandisa okuqukethwe kwe-pearlite awubonakali, kepha ngokwanda kokuqukethwe kwe-Cu, izinga lokushisa elinamandla le-ductile lenyuka, nobunzima bethonya nalo buyancipha.

Khulisa kahle izinto ezakha i-ferrite, njenge: C, Si, Ca, Ba, Al, Bi nezinye izinto. Phakathi kwabo, isici se-Si kufanele sikhulume ngaso. Njengoba sonke sazi, iSi yinto ekhuthaza ngokuqinile i-graphitization futhi inenzuzo yokwandisa okuqukethwe kwe-ferrite. , Kodwa okuqukethwe kukaSi kuyanda, ukuqina komthelela ngokusobala kuncishisiwe, izinga lokushisa elinamandla elinyukayo lenyuka ngo-5.5 ℃ ～ 6 ℃ njalo lapho okuqukethwe iSi kukhuphuka ngo-01.%, futhi i-ductile iron ene-Si okuqukethwe cishe ngo-4% inakho konke i-ferrite matrix, kepha i-brittleness iphezulu kakhulu, ngisho nasezingeni lokushisa kwegumbi, kunzima ukuyisebenzisa ngaphansi kwezimo zomthwalo womthelela. Ngakho-ke, okuqukethwe kwe-Si ngensimbi ye-ductile enezidingo zomthelela wokushisa okuphansi kuvame ukulawulwa ku-1.6-2.0%.

4.1.2 Nciphisa izinga lokupholisa lokusakaza kanye nesikhunta

Ngokwakheka okuthile kwensimbi ye-ductile, ukuguqula izinga lokupholisa lesigaba se-eutectic kungashintsha ukwakheka kwe-matrix ebangeni elikhudlwana. Lokho kusho ukuthi, lapho izinga lokupholisa lihamba kancane, kuyanda okuqukethwe kwe-ferrite esakhiweni se-matrix, ukujiya kukhulu kakhulu. Ukuhamba kancane kwesilinganiso sokupholisa, kuphakama okuqukethwe kwe-ferrite. Kodwa-ke, kuyadingeka ukuvimbela ukubukeka kwamakhakhasi ama-crystal amade namabhola we-graphite; izinto ezahlukahlukene zokubumba zine-conductivity ehlukile yokushisa, okuholela ekuvinjeni okupholile okuhlukile kokuphosa. Isihlabathi esomile noma isihlabathi se-resin kufanele sisetshenziselwe ukumodela izinto ezihamba kancane ngokushisa, futhi ubukhulu besikhunta kufanele bukhululeke ngokufanele. (Ngokuvamile kwaziwa njengokukhulisa inani lesihlabathi esidliwe), zama ukunciphisa noma ukuqeda ukusetshenziswa kwensimbi ebandayo. Ezingxenyeni ezibiyelwe ngomzimba omncane, kwandisa ngokufanele ukushisa kokulingisa ukubambezela izinga lokupholisa lokusakazwa, futhi wandise isikhathi sokukhipha izimpahla ngangokunokwenzeka. Uma kunokwenzeka, ukusakazwa kungagxila. Kubeke ukuze unciphise ukushabalalisa ukushisa.

4.1.3 Ukwelashwa ngokushisa

Kungabonakala kusuka ku-Figure 4 no-Figure 5 ukuthi ngemuva kwenqubo yokwelashwa kokushisa, okuqukethwe kwe-ferrite kuyanda, ukunwebeka nobulukhuni bomthelela kuthuthukiswe kakhulu, futhi ezinye izinto zingasakazwa ezingeni lokushisa okuphezulu ngokwelashwa kokunciphiswa, nokuphonswa i-matrix I-crystal lattice yesakhiwo iya iba yinhle futhi okusanhlamvu kuyacolisiswa, futhi inani nokusebenza kwe-ferrite kuthuthukiswe ngokuqinile. Ngasikhathi sinye, ngokusebenzisa indlela yokwelashwa kokushisa, izidingo ezinokhahlo zezinto ezithile ezintweni eziluhlaza nezisizayo zingakhululeka ngokufanele. Ngokuphonsa okuncane naphakathi okuhluleka ukuhlangabezana nezidingo, izindlela zokwelapha ukushisa zingasetshenziswa ukwakha.

4.2 Cwenga okusanhlamvu futhi wandise inani lamaqoqo eutectic

Njengoba usayizi wokusanhlamvu wezinto ukhuphuka, ukucindezeleka kokuphuka kwento kuncipha kakhulu. Lapho usayizi wokusanhlamvu ukhulu kunosayizi othile obucayi, kwenzeka ukuphuka okulimazayo. Ukucwenga nokunciphisa usayizi wokusanhlamvu kunganciphisa ukushisa okuguqukayo okuguqukayo, ngaleyo ndlela kukhuphule izinga lokushisa eliphansi lokuqina kwenkomba yensimbi ye-ductile.

4.2.1 Inqubo yokwenza insimbi yokuncibilikisa insimbi

Kusetshenziswa insimbi eyilahliwe nensimbi ye-ductile evuselelwe kabusha njengezinto zokusetshenziswa eziyinhloko, kusetshenziswa i-graphite ukukhuphula i-C, i-ferrosilicon noma i-silicon carbide yokwandisa i-Si yokuncibilikisa i-ductile iron. Njengoba iphuzu lokuncibilika lika-C ne-Si liphakeme kunezinga lokushisa lensimbi encibilikisiwe, zifaka insimbi encibilikile ikakhulukazi ngokusakazeka nokonakala. Kunenani elikhulu lama- [C] crystallites ensimbi encibilikisiwe, eyi-pre-eutectoid noma i-eutectic Graphite eyi-substrate enhle yangaphandle, elungele ukucwengwa okusanhlamvu.

4.2.2 Ukuzalwa kaningi

Ingqikithi ye-inoculation ukukhipha i-deoxidize kanye ne-desulfurize ukwakha okusanhlamvu kwamakhemikhali angaphandle. Inhloso yalo ukukhulisa ikhono le-graphite nucleation, ukucwenga izinhlamvu ze-crystal, ukwandisa inani lamabhola we-graphite, futhi wandise okuqukethwe kwe-ferrite. Ngemuva ekufukameleni kathathu, ikakhulukazi u-0.3 ～ 1mm enqubeni yokusakaza. I-Ba-aqukethe inoculant yokufaka inoculation ngokushesha, yize ivolumu yokufaka inoculation incane, umphumela we-inoculation ubalulekile.

4.3 Hlanza insimbi encibilikisiwe, unciphise i-slag nokufakwa ngaphakathi nangaphakathi kwezinhlamvu

Ukwephuka kwezinto ezibonakalayo kuvame ukwaphuka ngokweqile noma okwehlukanisayo. Kukhona ukufakwa noma ukufakwa ngaphakathi noma phakathi kwezinhlamvu zento, okwenza buthakathaka amandla okuhlanganisa kwento. Ngaphansi kwesenzo somthwalo womthelela, imvamisa yakha umthombo wokuqhekeka noma indlela yokusakazeka kokuqhekeka. Nciphisa ukumelana nomthelela wokushisa okuphansi kwento.

4.3.1 Ukuphathwa kabusha kwensimbi encibilikisiwe

4.3.1.1 Ukwelashwa kwe-deoxidation kanye ne-desulfurization

Kwabakhiqizi abasebenzisa i-cupola-circuit duplex smelting, bangasebenzisa indlela ye-shake-in noma indlela ye-pneumatic desulfurization yokwenza i-desulfurization ukunciphisa okuqukethwe kwesibabule ensimbi yokuqala encibilikisiwe ibe ngaphansi kuka-0.02%. Kodwa-ke, i-ejenti yamanje yokwenza i-desulfurization esetshenzisiwe Ingxenye enkulu yayo yi-CaO noma i-CaC2. Lolu hlobo lwe-desulfurizer lunekhono elibi le-deoxidizing, futhi kungcono ukusiza kahle izinto ezithile ze-deoxidizing ezifana neCa, Ba, Al nezinye izinto. Ngokuncibilikisa ngqo usebenzisa izithandani zikagesi, kuyadingeka futhi ukukhipha i-desulfurize kanye nokonakalisa insimbi encibilikisiwe.

4.3.1.2 Ukushisa ngokweqile nokuma kwensimbi encibilikisiwe

Ukwandisa ukushisa kokuncibilikisa kwensimbi encibilikisiwe kungenza ukufakwa ezintweni zokusetshenziswa, kanye ne-slag kanye ne-inclusions eyakhiwe ngesikhathi senqubo yokuncibilikisa, igeleze iye ensimbi ebunjiwe

Phezulu, ikakhulukazi ekusetshenzisweni kwenqubo yensimbi yokulahla insimbi, kuyadingeka ukuthi kwande ngokufanele ukushisa okuncibilikayo ≥ 1500 ℃ futhi kwandiswe isikhathi sokubamba, ngaphandle kwalokho, ikhabhoni ayikwazi ukuncibilika ngokuphelele ngensimbi encibilikisiwe futhi yenze ukufakwa kwe-slag. Insimbi encibilikisiwe ivunyelwe ukuma imizuzu eyi-1 ukuya kwemi-3, evumelana nokuntanta kwama-oxide nama-sulfide ezinsimbi ezisebenzayo njenge-Mg, Ba, Al, ne-Fe, ngaleyo ndlela kuhlanzwa insimbi encibilikisiwe.

4.3.1.3 Ukumbozwa okuningi nokususwa kwe-slag kaningi

Ukumbozwa okuningi kunceda inqubo yokuncibilikisa, kunciphisa isikhathi sokuxhumana phakathi kwensimbi encibilikisiwe nomoya ngesikhathi senqubo yokuphonsa, futhi kunciphisa okuqukethwe kwe-oksijini kusimbi encibilikisiwe; ukukhishwa kwe-slag kaningi kulungele ukuqoqwa kwama-oxide asalayo kanye nama-sulfide akhiwa ngesikhathi senqubo yokuncibilikisa noma yenqubo ye-spheroidizing, Ukuze kuhlukaniswe insimbi ne-slag, futhi kuqinisekiswe ukuthi insimbi encibilikisiwe ngaphambi kokungena emgodini ihlanzeke kahle.

4.3.1.4 Ukuhlunga insimbi engamanzi

Ngokuhlanganiswa nohlelo lokusakaza, kufakwa isikhwama se-slag nesihlungi kusikhunta noma kusikhunta, eyodwa ukuvimbela ukudlula kwe-slag eqinile neyoketshezi; okunye ukuzuzisa i-ayoni

Uketshezi lujojowe kahle emgodini ukunciphisa ukwakheka kwe-slag yesibili; okwesithathu ukuntanta iqoqo elithile le-slag esikhwameni se-slag ukunciphisa ukungena kwe-slag eyinhloko emgodini.

4.4 Nciphisa izakhi zokuhlukaniswa kwemingcele okusanhlamvu

I-Mn, Sb, Sn, As, Ti nezinye izinto ziyizinto zokuhlukaniswa kwemingcele yokusanhlamvu, ngakho-ke okuqukethwe kwabo kufanele kuncishiswe ngangokunokwenzeka.

4.5 Nciphisa izakhi ezakha i-oxide ne-sulfide

I-Ca, Ba, Al, Mg, izinto zomhlaba ezingavamile kulula ukwenza ama-oxide nama-sulfide, ngakho-ke okuqukethwe kwabo kufanele kuncishiswe ngangokunokwenzeka

4.6 I-nodulizer ekhethekile ne-inoculant

I-ejenti ye-spheroidizing kanye ne-inoculant esetshenziselwa ukukhiqiza i-ductile iron engamelana nokushisa okuphansi kufanele inake lezi zimiso ezintathu ezilandelayo

• Eyokuqala yile: ukuqina okuphezulu kwe-spheroidization nomphumela we-inoculation: lesi sici sincike ekusimeni kokwakheka kwe-ejenti ye-spheroidizing uqobo, uhla lokuphambuka kwezinto eziyinhloko njenge-Mg, Re, Ca, Ba, njll. Kufanele zibe ngaphansi kuka- ± 0.3 %; ngakolunye uhlangothi, insimbi encibilikisiwe Ukuqina kwekhwalithi, njengokushisa kwensimbi ngokuthepha, ukuzinza kokuqukethwe kwe-S ne-O; okwesithathu ukusimama kwenqubo yokusebenza, njengokulawulwa kwejubane lokuthinta insimbi nendawo yokususa insimbi, ukuvimbela insimbi ukuthi ingasheshi ukwenza insimbi encibilikisiwe iqonde ngqo ku-nodulizer.
• Owesibili uthi: ikhono le-inking eliqinile, uMg no-Re yizinto eziyinhloko zokuphamba, futhi nazo ziyizakhi eziqinile zomlomo omhlophe. Kufanele kube yi-Mg ikakhulu, ingezwe yi-Re element, futhi ifane ngokufanelekile neCa, Ba, Bi nezinye izinto ezinekhono elinamandla lokufaka inki.
• Owesithathu ngukuthi: ikhono lokwakha i-slag eliphansi, ngakolunye uhlangothi, okuqukethwe kwe-slag ku-nodulizer ne-inoculant, njenge-MgO, ama-oxide womhlaba angavamile namanye ama-slag angaphandle, kufanele ancishiswe. Ngasikhathi sinye, okuqukethwe yi-Ca ne-Ba ku-ejenti ye-spheroidizing ne-inoculant kufanele kube ngokulingene, ngoba banekhono eliqinile lokwenza i-slag.

5. Ukulungiswa kokuphikisana okumbili

Okuqukethwe nenani le-Mg, Re, Ca, Ba nezinye izakhi ku-ejenti ye-spheroidizing ne-inoculant ziphikisana nomphumela we-spheroidizing nokusebenza komthelela wokushisa okuphansi. Ukwengezwa kwe-Mg, Re, Ca, Ba nezinye izinto ezisensimbi encibilikisiwe ngokweqile, Kuzokwenza ukuthi okuqukethwe okusansimbi okuncibilikisiwe kwezinto ezingaphezulu kube ngaphezulu, futhi i-oxidation ephakeme ne-sulfidation slag nakanjani izothinta ukusebenza komthelela. Kodwa-ke, akufanele uyeke ukudla ngenxa yokuminyaniswa. Uma izakhi ezingenhla ziphansi kakhulu, kuzophinda kuthinte umphumela we-spheroidization nezicubu ze-matrix, futhi umphumela ngeke ufinyelelwe. Ngokuya ngekhwalithi ehlukile yensimbi encibilikisiwe, usayizi wokulingisa, umumo, ukujiya kodonga, isikhathi sokuthululela nezinye izimo, khetha i-ejenti ekhethekile ye-spheroidizing agent, inoculant kanye nezinyathelo zenqubo yokusekela.

6. Isiphetho

Ngokuvamile, inqobo nje uma ikhwalithi yensimbi encibilikisiwe ilawulwa kahle, okuqukethwe u-C, Si, Mn, Ca, Ba, Re, nezinye izinto kufanele kulawulwe, futhi okuqukethwe kwezinye izinto kufanele kunciphiswe kungenzeka. Kufanele kukhethwe ama-nodulizers akhethekile, ama-inoculants nezinsiza ezisekelayo. Ubuciko, inqubo yobuchwepheshe eqinile, izindlela zokuhlola eziphelele zamapharamitha ahlukahlukene. Ngakho-ke, akunzima kakhulu ukukhiqiza ngokuzinzile ukusakazwa kwensimbi ye-ductile emelana nokushisa okuphansi.

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UMinghe Inkampani yeDie Casting anikezelwe ekukhiqizeni nasekuhlinzekeni ikhwalithi nokusebenza okuphezulu Izingxenye Zokulingisa (izingxenye zensimbi zensimbi zokufa zisebenza ikakhulukazi zibandakanya I-Thin-Wall Die Casting,I-Hot Chamber Die Casting,Cold Chamber die Casting), Insizakalo Eyindilinga (Insiza Yokulingisa,ICnc Machining,Ukwenza Okubandayo, Surface Treatment) .Noma ikuphi ukusakazwa kwe-Aluminium die, i-magnesium noma i-Zamak / zinc die casting nezinye izidingo zokuphosa zamukelekile ukuxhumana nathi.

Ngaphansi kokulawulwa kwe-ISO9001 ne-TS 16949, Zonke izinqubo zenziwa ngamakhulu emishini esezingeni eliphakeme yokufa, imishini ye-5-axis, nezinye izikhungo, ezisukela kuma-blasters kuya kumishini yokuwasha ye-Ultra Sonic.Minghe akagcinanga ngemishini esezingeni eliphezulu kepha futhi unobuchwepheshe iqembu lonjiniyela abanolwazi, ama-opharetha nabahloli ukwenza ukwakheka kwekhasimende kugcwaliseke.

Umenzi wenkontileka yokufa kwabasikiwe. Amandla afaka izingxenye ezibandayo ze-aluminium die casting ezivela ku-0.15 lbs. kuye ku-6 lbs., Ukusetha ushintsho olusheshayo, nemishini. Izinsizakalo ezingezwe ngenani zifaka phakathi ukupholisha, ukudlidliza, ukuphazamisa, ukuqhumisa ngokudubula, ukupenda, ukuhlobisa, ukumboza, ukuhlangana nokusetshenziswa kwamathuluzi. Izinto zokusebenza ezisetshenzisiwe zifaka ama-alloys afana no-360, 380, 383, no-413.

I-Zinc die casting design usizo / izinsizakalo zobunjiniyela ezihambisanayo. Umenzi wangokwezifiso we-precision zinc die castings. Ukusakazwa okuncane, ukukhishwa kwengcindezi ephezulu, ukusikeka kwesikhunta esiningi, ukujikijelwa kwesikhunta okuvamile, ukufefa kwamayunithi kanye nokuzimela okuzimele kanye nokuvalwa okuvaliwe komgodi kungenziwa. Ama-Castings angenziwa ngobude nobubanzi obufinyelela ku-24 in. Ku +/- 0.0005 in. Ukubekezelelana.  

I-ISO 9001: Umkhiqizi oqinisekisiwe ka-2015 we-die cast magnesium, Amandla afaka i-high-pressure magnesium die casting up to 200 ton chamber hot & 3000 ton cold chamber, designing designing, polishing, molding, machining, powder & liquid paint, QA full with CMM amakhono , inhlangano, ukupakisha nokulethwa.

Kuqinisekiswe i-ITAF16949. Insiza Eyengeziwe Yokulingisa Faka ukukhipha utshalomali,ukuphonsa kwesihlabathi,Ukuphonswa kwamandla, Lost Foam Ekubunjweni,I-Centrifugal Casting,Ukuphoswa Kokuqothula,Permanent Isikhunta Ukulingisa, Amakhono afaka i-EDI, usizo lobunjiniyela, ukumodeliswa okuqinile nokucutshungulwa kwesibili.

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