Uma uzwa 'i-ductile iron casting', into yokuqala efika engqondweni yileso sakhiwo sama-nodular graphite, ama-spheroids asinika ukuguquguquka. Kodwa ku-Foundry, lokho kumane kuyisiqalo. Inselele yangempela ukungaphumeleli ukwenza i-nodularization—izinsiza ezihlonipheke kakhulu zingakuphatha lokho ngokwelashwa kwe-MgFeSi. Ilawula yonke into eyenzekayo ngaphambi nangemuva kwalowo mzuzu ukuze uthole ukulingisa okungagcini nje ngokuphumelela ukuhlolwa kwelebhu, kodwa okudlala enkundleni ngaphandle kokuqhekeka ngaphansi kwengcindezi noma ukwehluleka ngaphambi kwesikhathi ngenxa yokuncipha komhlaba ongaphansi. Ngibone ama-specs amaningi kakhulu avele abize i-ductile iron futhi acabange ukuthi iBanga 60-40-18 linikeziwe. Akunjalo. Umehluko phakathi kokusakazwa komsindo nesicucu se-scrap ngokuvamile usekuklanyweni kwesistimu yokugenca, izinga lokupholisa esikhunjeni, ngisho nesikhathi sokufiphala kwe-inoculant—imininingwane engafinyeleli esitifiketini sezinto ezibonakalayo.
Iqhaza Elingaqondwa Kahle Lokushutheka kanye Nokusebenzelana Kwesikhunta
Ake sikhulume ngokujova. Akuyona into eyodwa kuphela yokwelashwa ngemva kokwelashwa. Ukugonyelwa komfudlana kwakamuva kujwayelekile, impela, kodwa uma isikhunta sakho siyisihlabathi senhlaka esibandayo, esiminyene, ulwa impi ehlukile. Ukugodola okusheshayo kungakhuthaza ama-carbides, ikakhulukazi ezingxenyeni ezincane, ngisho nokujova okuhle. Ngikhumbula inqwaba yemizimba yama-hydraulic valve esayenza, mhlawumbe eminyakeni emihlanu edlule. I-chemistry yayiphelele, ukwelashwa kwakuyincwadi yokufunda. Kodwa sasinezinkinga eziqhubekayo zobulukhuni ebusweni be-flange. Kwavula inqubo yokubumba amagobolondo esasiyisebenzisa—okukhethekile kwezitolo I-Qingdao Qiangsenyuan Technology Co., Ltd.(QSY) abanolwazi olunzulu nge ukubunjwa kwegobolondo- empeleni yayipholisa insimbi ngokushesha kakhulu kulezo zindawo ezithile. Kwadingeka silungise ukunamathela kwesikhunta, sishintshele kusitofu esinamandla esiqukethe i-bismuth, futhi silungise izinga lokushisa elithelayo ngo-15°C nje. Lelo windi elincane lenza umehluko phakathi kokwamukela nokulahlwa. Yilolu hlobo lokucatshangelwa kwenqubo ethize okufunda kuphela ngokuqalisa ukukhiqiza nokubona amaphethini emibikweni yokuhluleka.
Lokhu kuhlotshaniswa nephuzu elibanzi mayelana nokusebenzisana ne-Foundry. Awufuni nje umuntu ongathela i-ductile iron. Udinga umlingani oqonda lonke uchungechunge lokukhiqiza. Isibonelo, uma ukusakaza kudinga amashaneli angaphakathi ayinkimbinkimbi futhi kamuva CNC imishini ngokunemba kwezindawo zokuvala, indlela ye-Foundry yokuhlanganisa umnyombo kanye nendlela abaklama ngayo ukucindezeleka okuncane okuyinsalela iba bucayi. Isitolo esenza ukusakaza kuphela singase singabambi iqhaza ekucindezelekeni kwemishini edalula i-porosity efihliwe. Umsebenzi ohlanganiswe mpo, njengalowo onemininingwane kuwo https://www.tsingtaocnc.com, ephethe kokubili ukulingisa nokwenza imishini, iklama ngokwemvelo ngesinyathelo esilandelayo engqondweni. Bayazi ukuthi kufanele babeke kuphi okuphakelayo hhayi nje ngokuzwakalayo, kodwa futhi nokushiya isitoko esihle, esingaguquki sesitolo somshini, ukugwema izindawo eziqinile ezicekela phansi amathuluzi.
Uma sikhuluma ngomshini, leyo ngenye indawo lapho idumela le-ductile iron le-machinability elihle lingadukisa khona. Yebo, kungcono kunensimbi empunga ngokwempilo yamathuluzi, ngokuvamile. Kodwa ukusebenza kwebanga le-65-45-12 kungahluka kakhulu ngokusekelwe ku-pearlite/ferrite ratio ku-microstructure. Ingxenye ngokuvamile ene-ferritic izokhipha amathuluzi, kuyilapho enye ene-pearlite eningi (ikakhulukazi uma iqinile) igqoka okufakwayo phansi ngokushesha. I-Foundry idinga ukulawula umjikelezo wokupholisa kanye nokudonsa okulandelayo okungaba khona ukuze kushaye isakhiwo esifanele somshini, hhayi nje amandla aqinile. Kuyisenzo sokulinganisa.
I-Gating kanye Nokudla: Lapho Ithiyori Ihlangana Nephansi
Izilinganiso zokulinganisa izincwadi ziyisiqalo esiphephile, kodwa ngokuvamile ziyehluleka ekusebenzeni kumajiyometri ayinkimbinkimbi. Umgomo uwukugcwalisa okuzolile ukuze ugweme ukungena kwe-slag kanye nenzila, kodwa futhi nokuqondisa insimbi eshisa kakhulu ezigabeni ezidinga ukuphakelwa kakhulu. Ngokusakazwa kwensimbi enengxenye esindayo, njengegiya elingenalutho noma indlu yephampu, ubhekene nokuncipha okukhulu. Kuyinkinga yokondla, kodwa futhi kuyinkinga yokunwetshwa kwe-graphite. Ukunwetshwa ngesikhathi sokuqina kunganxephezela ukuncipha, kodwa kuphela uma isikhunta siqinile ngokwanele ukusiqukatha. Uma udonga lwesikhunta lunyakaza, uthola i-shrinkage porosity. Yingakho ukukhetha phakathi kwesihlabathi esiluhlaza nesihlabathi esiboshwe ngamakhemikhali (njenge-furan noma i-phenolic urethane) akuyona into encane. Ezingxenyeni ezinobuqotho obuphezulu, ukuqina okuphezulu kwamasistimu ahlanganiswe ngamakhemikhali kuvame ukubiza izindleko ezengeziwe.
Lokhu sikufunde kabuhlungu kuphrojekthi ye-compressor bracket. Kwakuyisimo esilula, kodwa sinengxenye yehabhu elilodwa eliwugqinsi. Sisebenzise isistimu yokungena enengcindezi evamile esihlabathini esiluhlaza. Ama-castings adlula i-X-ray, kodwa ekuhlolweni kobufakazi, abambalwa behlulekile kuhabhu. Isici kwakungekona ukushwabana okujwayelekile; kwakungaphezu kwe-microporosity ehlakazekile. Udonga lwesikhunta lwaluhlehle kancane, olwanele nje ukuvimbela ipayipi kodwa alwanele ukuqinisekisa ukuminyana okugcwele. Sishintshele kusikhunta sesihlabathi se-furan saleso sigaba kuphela (ushintsho olubizayo kodwa oludingekayo) futhi sasebenzisa isu lokupholisa elinamandla eduze kwehabhu ekubumbeni. Ixazulule inkinga. I-takeway? Awukwazi ukuvele udizayine isistimu yokugenca uwedwa. Kufanele uklame ukuqina kwesikhunta kanye nezimo zokupholisa ezizungezile.
Lapha yilapho amashumi eminyaka okwenza iphethini nolwazi lobunjiniyela besikhunta khokha khona. Inkampani enomlando omude, ake sithi eminyakeni engama-30 njengoba kushiwo emlandweni wokusebenza we-QSY, yakhe umtapo wezincwadi wengqondo walokhu kuhlobana. Babonile ukuthi yini esebenzela ihabhu lamasondo ehlukahlukene. Lolu lwazi oluyimfihlo lwazisa ukwakheka kwenqubo yabo yokuqala, luvimbele izinsalela eziningi zokuzama namaphutha. Akuyona into ongayihlanganisa kalula ube isilingisa sesofthiwe, nakuba ukulingisa kusiza ukwehlisa izinketho.
I-Material Nuances: Akuyona Nje Insimbi Nekhabhoni
I-Ductile iron ayiyona into eyodwa. Amabanga ajwayelekile e-ASTM (60-40-18, 65-45-12, 80-55-06, njll.) achazwa ngokushuba okuphansi kanye namandla esivuno nokwelulwa. Kodwa okuguquguqukayo okungashiwongo-ukumelana komthelela ekushiseni okuphansi, amandla okukhathala, ukuqhutshwa kwe-thermal-kuthonywa kakhulu izakhi zokulandelela kanye nokwelashwa kokushisa. Ngokwesibonelo, manganese. Ensimbi, iqinisa. Ku-iron ductile, i-Mn ephezulu (ngaphezu kuka-0.3% noma ngaphezulu) ihlukanisa imingcele yeseli futhi ikhuthaza i-pearlite, okuyinto enhle, kodwa ingase idale i-carbides elimaza ukuqina nokuqina. Kufanele uyigcine iphansi, okuvame ukusho ukusebenzisa insimbi yengulube ehlanzekile kakhulu noma izinsalela zensimbi.
Bese kuba khona i-copper ne-tin, esetshenziswa njengabagqugquzeli be-pearlite kumamaki wamandla aphezulu. Kodwa kumelwe zengezwe ngokunemba. Kakhulu, futhi uzibeka engcupheni yokuhlehlisa ukugodola noma ubulukhuni obudlulele. Ngike ngabona inqwaba yabalingisi bekumele babe ngu-80-55-06 bephuma eduze ngoba ukufakwa kwe-tin akubalwanga kahle. Babenamandla njengesihogo, kodwa beqinile. Kwadingeka ukuthi ziphinde zifakwe, okwengeze izindleko nesikhathi somjikelezo. Kuyisikhumbuzo sokuthi ukulawulwa kwamakhemikhali esithandweni kuyisiyalo sansuku zonke, sangehora.
Futhi lokhu kungaphambi kokuthi ucabangele ama-alloys akhethekile. Nakuba ama-ayina ama-ductile ajwayelekile emboza izidingo eziningi zezimboni, ngezinye izikhathi udinga i-alloyed ductile iron ukuze uguge noma umelane nokushisa—wengeze i-nickel, i-chromium, noma i-molybdenum. Noma, uhlelo lokusebenza ludinga umndeni wezinto ohluke ngokuphelele, njenge ama-alloys asekelwe ku-cobalt noma ama-alloys asekelwe ku-nickel ukuthi amanye ama-Foundries athuthukile aphatha. Izimiso eziyisisekelo zokusakazwa komsindo zisasebenza, kodwa ukuncibilika, ukwelashwa, kanye nezinqubo zokuthulula ziba bucayi nakakhulu. Imajini yephutha iyancipha. I-Foundry ephatha ngempumelelo lezi zinto ezisetshenziswayo ezingajwayelekile cishe inezilawuli zenqubo eziqinile ezidingekayo ukuze zenze ukukhishwa kwensimbi okujwayelekile okujwayelekile.
Iqiniso Lokubekezelelana Kwe-Dimensional and Finishing
Elinye ikhanda elisebenzayo liwukubamba ubukhulu. I-iron Ductile inesabelo esibalulekile somenzi wephethini sokuncipha, ngokuvamile esibalelwa ku-0.8-1.0%. Kodwa ayifani. Ukulingisa okude, okuyisicaba kuzosonteka ngokuhlukile kune-compact, cubic one. Iphethini ngokwayo kufanele ilungiswe kulokhu kuhlanekezelwa okulindelekile, okuwubuciko obuningi kunesayensi. Sisebenzisa ukuskena kwe-3D ekulingiseni kwe-athikili yokuqala ukuze siqhathanise nemodeli ye-CAD, bese silungisa ngokuphindaphindiwe iphethini. Kudla isikhathi.
Ukuqedwa kobuso kungenye i-spec ecwebezelayo. Indawo ehlanzekile, ebushelelezi njenge-cast ayiyona nje into yobuhle; kunciphisa isikhathi sokuhlanza, kuthuthukisa ukunamathela kokunamathela, futhi kungaba yinto yokuphila yokukhathala. Ubuhle besihlabathi sokubumba (inombolo ye-AFS) kanye nohlobo lwe-mold coating luyisihluthulelo. Indawo yesihlabathi esimahhadlahhadla, eshile ivamise ukukhombisa izinga lokushisa elithelayo eliphakeme kakhulu, noma isihlabathi esinokuqina okuphansi. Kodwa ngezinye izikhathi, indawo embi kakhulu ezindaweni ezingabalulekile wukuhweba oyamukelayo ukuze uqinisekise ukugcwaliswa okuphelele kwezingxenye ezincane. Kuwubizo lokwahlulela.
Yilapho imodeli yesevisi ephelele ibonisa khona inani layo. Lapho ibhizinisi elifanayo linesibopho sokulingisa nokulandelayo CNC imishini, bathatha umbono ophelele wengxenye. Bangase banqume ukushiya esinye isitokwe esingu-2mm ebusweni obuthambekele ekufakweni kwesihlabathi, bazi ukuthi isitolo sabo semishini singasihlanza ngendlela ethembekile. Baklama isakhiwo sokusakaza kanye nesango ukuze banciphise umsebenzi wokuhlanza. Lokhu kuhlanganiswa kuqeda ukukhombana ngeminwe okungenzeka phakathi kokusakazwa okuhlukene nabathengisi bomshini uma kuphakama inkinga. Ukugxila kuhlala ekuletheni ingxenye eqediwe, esebenzayo.
Ukubheka Emuva Nokuya Phambili
Ngemva kweminyaka kulo mkhakha, uqala ukubona i-iron ductile hhayi njengempahla yempahla, kodwa njengohlelo. Uhlelo luhlanganisa izinto zokushaja, inqubo yokwelapha, ukwakheka kwesikhunta nezinto zokwakha, umkhuba wokuthulula, kanye nemisebenzi yangemva kokuphonsa. Ubuthakathaka kunoma yisiphi isixhumanisi buvela engxenyeni yokugcina, ngezinye izikhathi ngokushesha, ngezinye izikhathi ngemva kwezinyanga ensimini. Ama-Foundries angcono kakhulu awasebenzi nje lezi zinyathelo; bayabuqonda ubudlelwano bembangela-nomphumela phakathi kwabo.
Kungakho lapho ngihlola umphakeli, ngibheka kancane ezimangalweni zabo zokumaketha futhi ngibheka kakhulu indlela yabo yokuxazulula izinkinga. Ingabe banawo amaphepha enqubo anemininingwane omsebenzi ngamunye? Bangakwazi yini ukuchaza ukuthi kungani bekhethe usayizi othile wesiphakeli noma izinga lokushisa elithelayo? Ingabe babhala ngokuphambuka nemiphumela? Uzakwethu onekhono ngokobuchwepheshe, njengalowo ochazwe esethulweni osekugxilwe kuye ngamashumi amathathu eminyaka ukubunjwa kwegobolondo, ukutshala imali, kanye nokwenza imishini, ngokuvamile kunalesiyalo esigxilile. Iwebhusayithi yabo, tsngtaocnc.com, izinkomba kulobu bubanzi bamandla, okuphakamisa ukuthi kudingeke ukuthi baxazulule izinselele eziningi zobuchwepheshe kuzo zonke izinqubo nezinto ezisetshenziswayo, kusukela insimbi futhi insimbi kulabo ama-alloys akhethekile.
Ekugcineni, kuphumelele i-ductile iron cast imayelana nokuvumelana okulawulwayo kanye nokuzivumelanisa nezimo unolwazi. Ayikho indlela eyodwa efanele, kuphela indlela ekhiqiza umsindo, ingxenye esebenzayo yomklamo othile, ngezindleko, nangesikhathi. Kuwumsebenzi wezandla osekelwa isayensi, futhi kuwukuqoqwa kwezifundo ezincane, ezizuzwe kanzima—ngokuvamile eziphuma ekuhlulekeni—okuhlukanisa isisekelo esinolwazi nesithembeke ngempela. Inhloso ngaso sonke isikhathi ukwenza inqubo ibikezelwe, ukuze ukusebenza kokusakaza ezandleni zekhasimende akungabazeki.
