Ci gaban bincike na sutura don ductile iron epc simintin gyare-gyare

Nodular simintin ƙarfe, azaman nau'in simintin ƙarfe na ƙarfe mai ƙarfi tare da kaddarorin kusa da ƙarfe, yana da fa'idodin ƙarancin ƙima, kyakkyawan ductility, kyakkyawan ƙarfin gajiya da juriya, da kyawawan kaddarorin inji.  Ana amfani dashi sosai a gadon injin, bawul, crankshaft, piston, Silinda da sauran sassan injin mota.  Bataccen simintin gyaran fuska fasaha wani nau'in fasaha ne ba tare da rabuwa ba,  Hanyar samar da hanyar sadarwa ta kusa na hadaddun madaidaicin simintin gyare-gyare ba tare da yashi ba ana amfani dashi sosai wajen samar da simintin ƙarfe, simintin ƙarfe, gami da aluminum gami da sassan gami da magnesium.  Bataccen yanayin baƙin ƙarfe, wanda aka yi da shi  Saboda da high carbon abun ciki, graphitization fadada da sauran halaye a lokacin solidification, simintin gyaran fuska wrinkling, shrinkage rami da porosity, carbon baki da sauran lahani ne sau da yawa lalacewa ta hanyar matalauta shafi yi.  Saboda,  Haɓaka kaddarorin rufi na epc muhimmiyar hanyar haɗi ce don tabbatar da yawan amfanin ƙasa.  

A cikin samar da epc, ingancin sutura yana da mahimmanci ga ingancin simintin.  Epc shafi ya kamata yana da kyau permeability, ƙarfi, sintering da peeling Properties  Kamar aiki.  A halin yanzu, ana gudanar da bincike gabaɗaya akan kaddarorin aiki na shafi, tsarin hulɗar tsakanin sutura da samfuran bazuwar EPS, tasirin shafi akan simintin simintin gyare-gyare da kayan haɗin gwiwa.  Bincike, a cikin ingantaccen abun da ke ciki na kayan shafa, ƙari rabo na aikin shafi, tsarin shirye-shiryen shafi.  Daga samarwa da yin amfani da suturar epc, samar da suturar ya kamata a daidaita  Tsarin shiri, yawan simintin gyare-gyare;  The asarar mold simintin shafi shafi ne m, da shafi dabara ne hadaddun da tsada, da shiri tsari ne m, kuma ko da dabara abun da ke ciki ba daidai ba.  Ba wai kawai yana rinjayar yawan amfanin simintin epc ba, har ma yana hana haɓaka fasahar EPC da masana'antar sutura.  

1 Rubutun buƙatun ƙarfe na ductile a cikin simintin epc  

Yawan zafin jiki na simintin simintin ƙarfe na nodular simintin ƙarfe yana yawanci 1380 ~ 1480 ℃, ɗan ƙasa da na simintin ƙarfe. Yawan simintin ƙarfe na nodular shine 7.3g/cm3, wanda ya fi na magnesium da aluminum gami, don haka ruwa mai simintin ƙarfe na nodular.  Sakamakon zafi da karfi a kan sutura a lokacin cikawa yana da mahimmanci fiye da na magnesium da aluminum gami.  A cikin ductile baƙin ƙarfe tsari na epc, da shafi aiki saboda vacuum korau matsa lamba tsari  A karkashin jihar, a gefe guda, gefen ciki na sutura yana buƙatar tsayayya da matsa lamba mai ƙarfi da matsa lamba na babban zafin jiki na ductile baƙin ƙarfe ruwa, kuma bambancin matsa lamba na ciki da na waje yana da girma, kuma rufin yana da sauƙi. lokacin da ƙarfin zafi mai girma bai isa ba  Sanadin simintin gyaran fuska ko ma nakasar simintin.  Nodular simintin ƙarfe yana da yanayin zafin simintin simintin da sauri da saurin ruɓewar EPS. Kayayyakin gas suna lissafin yawancin samfuran lalata, gami da ƙaramin adadin ruwa  Kayayyakin Jiha da daskararru.  Ana samar da samfurori da yawa da yawa kuma suna cika dukkan rami mai rufi, don kauce wa gazawar samfurori don zubar da rufin, wanda ya haifar da ductile baƙin ƙarfe pores da wrinkles.  Rufaffen ya kamata ya kasance yana da kyawawa mai kyau na iska don faruwar lahani irin su fatar jiki da ajiyar carbon.  Ya kamata a sarrafa ma'auni na aikin shafa a cikin kewayon da ya dace don rinjayar ƙarfi da haɓakar suturar.  The refractoriness, sinter dukiya, tara siffar da barbashi size da kai tsaye tasiri a kan ƙarfi da permeability na epc shafi.  A cikin aiwatar da shirye-shiryen sutura, kashi mai jurewa wuta  Zaɓin kayan abu yana da mahimmanci musamman.  

2 Formulation da tsari na ductile baƙin ƙarfe shafi ga epc  

Refractory tara shine babban ɓangaren shafi. Ayyukan shafi yana da alaƙa da alaƙa ta zahiri da sinadarai na tarawar refractory.  Amfani da dakatarwa yana hana juzu'i a cikin fenti  Sedimentation, don haka da cewa shafi yana da kyau thixotropy.  A lokacin aikin zubar da ruwa, rufin yana buƙatar yin tasiri mai karfi na thermal, da kuma amfani da fili na daban-daban binders yana tabbatar da shirye-shiryen sutura.  Rubutun yana da ikon kiyaye ƙarfi akan kewayon yanayin zafi.  Rufewa daga albarkatun kasa zuwa samuwar sutura don shirya, sutura da bushewa manyan matakai guda uku.  High ingancin shafi  Material ban da mai kyau yi, da fasaha yi yana da matukar muhimmanci, shafi shirye-shirye, shafi aiwatar matakai bukatar zama mai sauki, m aiki, shafi surface m, babu pinhole, crack da sauransu.  

3 kayan shafa na ductile iron epc simintin gyare-gyare  

3.1 Ƙarfin sutura  

A matsayin refractory shafi shafi a kan saman da siffar, da vanishing yanayin shafi tare da babban ƙarfi ba zai iya kawai inganta ƙarfi da stiffness na siffar, amma kuma za a iya amfani da a matsayin karfe ruwa da mold.  Shamaki mai tasiri tsakanin yashi yana tabbatar da cewa rufin zai iya jure wa tsauri da matsa lamba da matsa lamba na waje da aka kawo ta hanyar babban zafin jiki na ƙarfe mai cike da ruwa, kuma yana rage yashi na inji na simintin gyare-gyare.  Don haka ƙarfin rufewa shine mahimman bayanai don auna aikin sutura.  

3.2 Nazarin kan porosity da permeability na sutura  

Zubowar ƙarfe na zube, bayyanar EPS a ƙarƙashin aikin babban zafin jiki da sauri bazuwar iskar gas, tare da ruwan ƙarfe na gaba gaba, samfuran bazuwar daga rami ta hanyar zubar da ruwa, ruwa mai ƙarfe  Fitar da kayan kwalliyar ƙura da lalata samfuran suna cikin ma'auni mai ƙarfi.  Idan iska na rufin ya yi ƙasa da ƙasa, samfuran bazuwar ba za a iya fitar da su daga cikin rami a cikin lokaci ba, wanda zai haifar da pores da lahani na iskar carbon a ƙarƙashin fatar simintin.  Da sauransu.  Idan madaidaicin iska na rufin ya yi yawa, saurin ciko mold yana da sauri, mai sauƙin haifar da yashi na inji.  Tare da haɓakar kauri na sutura, tasirin daɗaɗɗen sutura akan haɓakar iska zai ragu a hankali.  High permeability  A shafi yana da ya fi girma talakawan barbashi diamita da fadi barbashi size rarraba.  

4 Tasirin shafi akan lahani na nodular jefa baƙin ƙarfe  

4.1 Tasirin shafi akan lahani na wrinkling  

A cikin simintin simintin ɓataccen abu, lokacin da bayyanar EPS ta haɗu da tsarin rugujewar ruwan ƙarfe mai zafin jiki, samfuran bazuwar ruwa suna ta iyo a saman ruwan ƙarfe ko manne da murfin, wanda ke da wahalar rugujewa gaba ɗaya.  Lokacin karfe  Lokacin da aka sanyaya ruwa kuma ya ƙarfafa, tashin hankali na saman ragowar da ya lalace ya bambanta da na ƙarfe na ruwa. Yayin da simintin gyare-gyaren ke raguwa, ana yin ɗimbin murɗaɗɗen rawani ko maɗaukaki akan fatar simintin.  

4.2 Tasirin shafi akan zubar da lahani na carbon  

Lalacewar ajiyar carbon yana haifar da babban adadin carbon da aka samar da aka tallata a saman rufin, wanda ba za a iya fitar da shi daga cikin rami ba kuma a manne da saman simintin. Yawancin lokaci ana nunawa a cikin simintin gyare-gyare kamar fim ɗin carbon tare da haske mai haske.  Maƙarƙashiya na simintin gyare-gyare yana cike da baƙin carbon, da dai sauransu.  A cikin samar da epc, lahani na simintin yana da alaƙa da kusanci da kayan bayyanar, abun da aka yi da simintin, sutura da tsarin simintin.  

5 Hanyar bincike na sutura don ductile iron epc simintin gyare-gyare  

Nodular simintin ƙarfe ya rasa simintin gyare-gyare, saboda yawan zafinsa na zubowa, bayyanar kumfa mai girma na iskar gas, ƙaddamar da simintin mara kyau.  Rufe baƙin ƙarfe na nodular simintin gyare-gyare yana ƙarƙashin narkakken ƙarfe yayin cikowar ƙira  Strong Scour sakamako da kuma na ciki da kuma na waje matsa lamba bambanci, da shafi dole ne da kyau ƙarfi a high zafin jiki, domin ya hana karfe ruwa kwarara tsari haifar da yashwar shafi da kuma shafi simintin tebur.  Ingancin saman, don haka abun da ke ciki da kaddarorin tattarawar refractory da tasirin abubuwan ƙari akan ƙarfin shafi ya zama mabuɗin don haɓaka aikin shafi.  

20 


Lokacin aikawa: Nuwamba-05-2021