Inqubo yokukhiqiza ye-castile iron 500-7

Ngokusekelwe ezimfanelweni zesakhiwo nezezinkomo zokukhokhiswa, izingoma ezifanele zamakhemikhali zikhethwe, futhi kusetshenziswe indawo ekhethekile ye-rouctile iron ukuqinisa ukuphathwa kwenqubo ye-spherhoolization futhi ngokuqinile izingxenye ezincane ze-qt500-7 ezihlangene nezidingo zobuchwepheshe. Ukukhiqizwa kwe-cast-marte-mandle ancinile iron kungatholakala ngezinyathelo ezinjengokuqalisa ukuqinisa ukwakheka kwe-matrix. Kodwa-ke, ukukhiqizwa kwe-QT500-7 Insimbi e-Douctile enobuhle njengoba kunzima ukusebenza kahle ngenxa yokulandela izinto eziningi zokugcina ezintweni ezifuywayo ezifana ne-Pip Iron, i-Scrawle Nasi isifinyezo seminyaka yenkampani yethu yokuzijwayeza ukukhiqizwa kwabancane (isisindo esingu-1-10kg) kanye nezingxenye zensimbi ezithambile ezibingelwe (ukuqina kodonga ngo-5-20mm).

Izidingo Zokwakheka Kwezembathiswano Nezembathalwazi: Amandla ashubile ≥ 500n / mm

Ukuthela amandla ≥ 320N / MM2, Elengation ≥ 7, Ubulukhuni be-Brinoll 170-230, I-SPHIRINOILIZATION 30% -45%, usayizi we-graphite ≤ 1 Ngokwezici ezihlelekile, usayizi, kanye nezidingo zokuphonsa, ukukhethwa kwekhilokhi yamakhemikhali kungokulandelayo: 3.6% kuya ku-3.6 okuqukethwe okungu-4,5%, okungu-0.0% kuya ku-0.6%, <0.05% P, <0.03% S, <0.03% re dereidie, 0.035% kuya ku-0.6% mg, kanye nezinsalela ze-re resue / mg kufanele kuqinisekiswe ukuthi zibe ≤ 2/3.

I-Enterprise lapho umbhali esebenza khona esebenzisa isithako esijwayelekile esingu-0.5t aphakathi nendawo ukuze ancibilike insimbi ebilisiwe, ngokushaya okushayayo ngenhla kwe-1520 ℃. Ukwamukela umgodi okhethekile we-0.5t we-rouctile weron okhethekile wokuthulula indlela yokwelashwa kwe-scherhoization. I-ejenti ye-SPINLOISIZINGI yi-Fesimg8re5 ene-GB4138-88, futhi i-Inoculant iyi-inoculant ye-silicon barium composite. Ngemuva kokudlula ukuhlolwa kweFurace Pre forcina, kungathelwa ngokushesha. Lawula isikhathi sokuthulula kungakapheli imizuzu eyi-15 ukuvikela ukuguquguquka nokuwohloka.

3.1 Inani lensimbi ebilisiwe eliphathwe nge-ejenti ye-Spheroidizing lingamathani ayi-0,5, futhi usayizi wezinhlayiyana we-ejenti ye-spherhy kufanele kube ngu-10-20mm. Ingxenyana enkulu yokuguqula izinhlayiya ze-ejenti agecweli amancane kune-10mm akufanele yedlule i-10%. Umenzeli we-Sperouding kufanele womiswe futhi ashaywe kathuke, mhlawumbe ngo-150-200 ℃. Uma izimo zivuma, i-hopper ekhethekile ingenziwa ngokubhaka emlonyeni womlilo. Siyethemba ukukhiqiza insimbi evuthayo nge-High Liquid Iron lokushisa, okuqukethwe okuphansi kwegesi, akukho okuqukethwe yi-oximation, kanye nokwakheka kwamakhemikhali. Kulezi zinsuku, izinhlobo ezahlukahlukene zezinsikazi ze-blast zivame ukusetshenziswa eChina ukuncibilikisa insimbi ebincibiliki. Ngenxa yezimpawu ezihlukile zohlobo lomlilo ngamunye, kuyadingeka ukuthi ukhethe uhlobo lomlilo olulungele ukwenziwa kwensimbi ye-Dorcile Iron ngokusekelwe ekucabangeni okungokoqobo. Inkampani yethu isebenzisa isithando semvamisa esiphakathi nendawo, okuyinto enobungani bemvelo. Izinga lokushisa lensimbi ebilisiwe kulula ukulilawula, ukwakheka kwamakhemikhali kuyazinza, futhi kunokushintshashintsha okuncane.

3.2 Ukuthela i-ladle

3.2.1 Usayizi Wezidingo: Sebenzisa i-rouctile yensimbi ekhethekile yokuthela. Isilinganiso sokuphakama kobubanzi besilinganiso se-General General singu-1.1-1.2, kanye nesilinganiso sokuphakama kububanzi be-conctile iron ladle ngu-1.5 (ububanzi bubhekisela kububanzi bomlomo weLadle). Le ndawo ngaphakathi kuma-akhawunti e-PIT nge-50% kuya ku-60% wendawo engezansi yeLadi, futhi ukujula kungahlalisa i-ejenti engeziwe ye-spenouding, inoculant, kanye ne-ejenti. Ububanzi bomlomo we-ructile iron ladle buncane kunobubanzi bomlomo ojwayelekile wokucaciswa. Ukucatshangelwa kweDadle Design:

A, ukuphakama kwephakeji kuqinisekisa ukuphakama okwanele ngaphezulu kwe-ejenti ye-spherning, kwandisa ingcindezi yekholomu yensimbi ebilisiwe. Umenzeli we-Sperouding entanta isikhathi eside, esilungele ukumuncwa kwensimbi ebilisiwe. Ngasikhathi sinye, ama-bubble we-magnesium athenta phezulu futhi athathe isikhathi eside ukuphunyula ebusweni bensimbi encibilikisiwe;

B, uma ubukhulu bephakethe buncane, inani lama-magnesium bubble abalekela ngasikhathi sinye, i-oxidation burn incane, futhi ukulahlekelwa kokushisa kwehlisa. Usayizi nokwakheka kokuthulula i-ladle

3.2.2 Izidingo zokumisa iziqu: ILadele kumele yomiswe kahle ngaphambi kokusetshenziswa.

3.3 Izindlela Zokucubungula

3.3.1 Ukusatshalaliswa kwentokazi: ILatele elisetshenziselwe okokuqala kufanele libhakwe kahle ngokhuni oluqoshiwe. Lapho isetshenziswa futhi, ingabhakwa ngokhuni oluqoshiwe noma ivele ngensimbi ebilisiwe.

3.3.2 Inani le-agent eguqulwa nge-1.0% libe ngu-1.0% liye ku-1.2%, inani le-inoculant elingeziwe lingu-0.8% kuya ku-1.0%, futhi inani le-ejenti elisembozweni elingeziwe lingu-0,5%

3.3.3 Indlela yokulayisha: Okokuqala, beka i-ejenti ye-spherchezizing emgodini we-concave ezansi kwephakeji futhi uyihlanyele. Ngemuva kwalokho, yimboze nge-inoculant futhi uyihlanganise futhi. Ekugcineni, engeza i-ejenti yesembozo kanye neplate yensimbi yensimbi ngokulandelana bese icwecwa ipuleti yensimbi yensimbi (uma izimo zivuma, kungcono ukusebenzisa ama-chip wensimbi elomile, ahlanzekile futhi angenawo uwoyela womkhiqizo omile esikhundleni sepuleti yensimbi).

3.3.4 Inqubo ethile yokwelashwa: Thela i-Iron ebilisiwe ungene eLadle kusuka esithandweni sokuqinisekisa ukuthi umsakazo wokuqala wensimbi ebilisiwe uwela enkabeni yepuleti yensimbi yensimbi futhi ubangele ukuthi uphinde usebenze futhi uphendule nge-ejenti ye-sphersun. Kungcono ukulawula i-iron ebiwe ukuze uqale ukusabela kwe-scherning lapho ichichima i-300mm ye-ejenti ye-spiroaling. Ngemuva kokuthi i-Iron yensimbi ikhishwe, imboza ngokushesha i-ScherHiling Treating Ladle ngesembozo seshidi sensimbi. Ngemuva kokuthi ukusabela kuzinzile, thatha isembozo seshidi sensimbi ukuze ususe isilayidi bese ufafaza i-ejenti yesembozo.

Isifinyezo semiphumela yokukhiqiza

4.1 Ukwakheka kokukhokhwa kanye nokusebenza kwezinhlobo:

I-4.2 Isampula Yesithombe se-Graphion ne-Matrix Metallographic Izithombe 5 Ikhwalithi yekhwalithi yenqubo yokukhiqiza ifaka iminyaka yesipiliyoni esingokwesipiliyoni se-centrographic kanye ne-QT500-7, kubaluleke kakhulu ukulawula okuqukethwe kwe-Pearlite esakhiweni se-matrix ngenkathi kuqinisekiswa okuhle ukuguquguquka. Umbhali ukholelwa ukuthi amaphuzu alandelayo abucayi kakhulu ekukhiqizweni okuzinzile kwe-as qt500-7 iron yensimbi:

5.1 I-Iron Liquid ephuma ekushiseni kwe-holanace: Uma i-ketshezi yensimbi ngaphandle kwendlela yokushisa yomlilo ephezulu kakhulu, kuzokwenza isikhathi sokuphendula ukukhethwa kwe-spheroid ukuthuthukisa, okungukuthi, i-iron ketshezi izoqala ukuguquguquka ngaphambi kokuphakama. Ngasikhathi sinye, uketshezi lwensimbi luzokhonkotha ngobudlova, lubangela ukushiswa kwe-MG okunzima nokuncipha kwezinga lokutholwa. Ngaphezu kwalokho, ukukhula nokubola kuzoba okusheshayo, okuholele ekutheni kwenziwe nge-sphervization noma ukubola; Uma izinga lokushisa lensimbi elicwengekile liphansi kakhulu, kungadala ukuguquguquka okuhamba kancane noma okungaphenduli kanye nokuqalwa kwensimbi ebilisiwe. Izinga lokushisa le-0.5T ladle lincipha cishe nge-80-100 ℃ ngesikhathi sokushisa kwenqubo yokuphendula insimbi, ngakho-ke izinga lokushisa lokwelashwa kwensimbi elibunjiwe ngemuva kokukhishwa esithandweni somlilo kufanele libe ngu-100-120 ℃ eliphakeme kunamazinga okushisa athululayo. Ngakho-ke, izinga lokushisa lokwelashwa kwensimbi ebilisiwe ngemuva kokukhishwa esithandweni somlilo kufanele lilawulwe phakathi kuka-1500-1520 ℃

5.2 Lawula okuqukethwe kwekhabhoni nokuqukethwe kwe-silicon ku-iron ebilisiwe, ngokulandela ngokuqinile umgomo we- "carbon ephezulu kanye ne-silicon ephansi".

5.3 Okuqukethwe okusanhlamvu okusanhlamvu kanye ne-MG okusele kufanele kulawulwe ngokuqinile, futhi isilinganiso se-re de real to mg izinsalela kufanele sibelwe ukuthi sibe ≤ 2/3. 5.4 Sebenzisa izinto ezisetshenziswayo ezisezingeni eliphakeme, uzinze imithombo yezinto ezibonakalayo, futhi ulawule ngokuqinile okuqukethwe kwesibabule bese ulandelela izinto eziyingozi. Kuze kube manje, kuyadingeka ukuqinisa ukuphathwa kwezinto zokwakha izintambo, okufanele zihlukaniswe futhi zigcinwe ngokumaka okucacile, futhi zisinde ngokunembayo lapho engeza izinto.

5.4.1 Ingulube yengulube: Kungcono ukukhetha i-iron equkethe i-silicon engaphansi kwe-2% nangaphansi kwe-0.1% phosphorus. I-tonnage yayo ngeke ibe ngaphansi kwamathani angama-50 ukugcina isikhathi esizinzile sekhwalithi yensimbi ye-rouctile yensimbi.

5.4.2 Izinto ezisetshenziswayo kabusha

5.4.3 Insimbi yensimbi: Insimbi esezingeni eliphakeme yekhabhobholi kufanele isetshenziswe ngangokunokwenzeka. Ngasikhathi sinye, labo abanokugqwala okunzima kanye nobukhulu obungaphansi kwe-2mm akufanele busetshenziswe njengezinto zokwakha izintambo zensimbi yensimbi ukuze unciphise ama-oxides futhi uhlele ukuzithemba. Ubukhulu bebhulokhi lezinto ezingenhla zomlilo kufanele bube ngaphansi kuka-1/3 wewashi lomlilo elingaphakathi ukuvikela ithonya lezinto zokwakha ezishinini ezibunjiwe.

5.5 Ama-SPINLOIZING AERSTS kumele avalwe futhi agcinwe ukuvikela i-oxidation kanye nomswakama.