Ubona i-QT400-18 ku-spec, futhi into yokuqala efika engqondweni ngokuvamile i-ductile iron. Kodwa yilapho kuqala khona ukwenza lula ngokweqile. I-400 MPa tensile kanye no-18% ubude ubuncane, umugqa wokuqala, hhayi ukuphela okuqinisekisiwe. Eqinisweni, indlela ofika ngayo lapho—umkhuba wokuncibilika, ukujova, izinga lokupholisa esikhunjeni—inquma ukuthi unayo yini into enokwethenjelwa ngempela noma into nje engawakhiqizi amabhokisi ephepheni. Ngibone amaphrojekthi amaningi kakhulu lapho kugxilwe khona kuphela ekushayeni lokho kunwebeka okungu-18% kukhuphoni lokuhlola, kuyilapho ukulingisa kwangempela, nobukhulu bezigaba obuhlukahlukene, kugcine kunezinto ezingaguquki. Leyo ingxoxo yangempela mayelana ne-QT400-18.
Iqiniso Elingokoqobo Lokucacisa i-QT400-18
Uma unjiniyela wokuklama ecacisa i-QT400-18, ngokuvamile usuke efuna leyo nhlanganisela yamandla ahloniphekile nekhono elihle lokuklama, ngokuvamile okwezindlu, abakaki, noma imizimba yamavalvu. Kucatshangwa ukuthi yizinto ezithethelelayo. Futhi kungaba njalo. Kodwa ukuthethelelwa kuvela ekulawuleni inqubo ye-Foundry, hhayi egameni lebanga ngokwalo. Ngikhumbula inqwaba yemizimba yamaphampu esayithola eminyakeni embalwa edlule. Izitifiketi zaziphelele: 420 MPa, 19% ubude. Kodwa ngesikhathi sokwenza imishini esitolo sethu sozakwethu, impilo yamathuluzi yayiguquguquka. Ezinye izingxenye zisike kahle, ezinye zidale ukuguga ngokweqile kwamathuluzi. Inkinga kwakungeyona izakhiwo ezimaphakathi; bekuwukungaguquguquki kwe-microstructural—ukwehluka kwesibalo samanodule nokuqukethwe kwe-pearlite okungazange kuthathwe ibha yokuhlola evamile.
Yingakho ubudlelwano besikhathi eside nomsunguli onekhono bungaxoxiswana. Udinga umphakeli oqonda ukuthi iwindi lekhemistri ukuze lingaguquguquki I-QT400-18 iqinile kunalokho abaningi abakucabangayo. Okuqukethwe kwe-silicon, isibonelo, kubalulekile ekufakeni isivundisi kodwa ukuphakama kakhulu kulimaza ukuqina. Ukwelashwa kwe-Magnesium kudinga ukubonwa. Kuyisenzo sokulinganisa. Inkampani efana I-Qingdao Qiangsenyuan Technology Co., Ltd. (QSY), ngeminyaka yabo engamashumi amathathu ekulingisini, ngokuvamile inalawa mapharamitha ashayelwa ngomuzwa. Babonile ukuthi ukushintsha okucashile kwezilinganiso zembuyiselo noma izinga lokushisa elithelayo kusithinta kanjani isakhiwo sokugcina kumagobolondo ayinkimbinkimbi noma isikhunta sokutshala imali.
Ubude obungu-18% yisibonelo sakudala sesici esingadukisa. Ungayifinyelela nge-matrix ye-ferritic ngokugcwele, elungele ukumelana nomthelela emazingeni okushisa aphansi. Kodwa ungakwazi futhi ukunyonyoba uyidlule ngesakhiwo esixubile uma i-ferrite ithambile ngokwanele. Lesi sakamuva singase siphumelele uvivinyo lwe-tensile kodwa sehluleke kuhlelo lokusebenza lokulayisha ukushaqeka komhlaba wangempela. Ukhiye awusho nje ibanga, kodwa ngokuvamile imfuneko ehambisanayo njengobunzima obukhulu (i-HBW 170 noma ephansi iyimpokophelo enhle yokusebenziseka kalula) noma ngisho nenani lomthelela we-Charpy uma ingxenye ibona imithwalo eguquguqukayo. Lokhu kuphusha i-Foundry ukuthi ihlose ukwakheka kwe-ferritic ngempela.
I-Machining QT400-18: Lapho I-Theory Ihlangana Ne-Chip
Ephepheni, I-QT400-18 kufanele kube ngenye yezinsimbi ezilula ezisebenza ngomshini. Isakhiwo sayo se-ferritic sithambile. Kodwa uma kuqhathaniswa igama elisebenzayo. Uma i-microstructure ingafani, uthola izindawo eziqinile-izindawo ezincane ze-pearlite noma i-carbides-ezenza njenge-sandpaper kumathuluzi akho okusika. Umehluko phakathi kwenqwaba engaguquki nokuguquguqukayo ungaphinda kabili izindleko zakho zamathuluzi ingxenye ngayinye. Akuvamile ukuthi ulungise izifunzo kanye nesivinini ingxenye ethile lapho ugijima, okuyiphupho elibi lokuhlelwa kwe-CNC nokuzinza kwenqubo.
Emsebenzini wethu wokwenza imishini, nakulokho engikubonile emisebenzini yabahlinzeki abahlanganisiwe abafana ne-QSY abaphatha kokubili ukulingisa kanye CNC imishini, indlela yokwenza i-pre-emptive. Ngokuvamile bazosebenzisa ukunqamula ubulukhuni kusampula yokulingisa kusukela kuphethini entsha noma ngemva koshintsho olubalulekile lwenqubo. Isheke elilula, kodwa likutshela okwengeziwe mayelana nokusebenziseka kalula kunombiko we- tensile ngezinye izikhathi. Umgomo uwukugwema lezimanga esikhungweni machining. Ukulingisa okuhle kakhulu kungonakala ngenxa yokungalungi kahle, okuholela ezingxenyeni ezilahliwe kanye nesabelomali esivunguzayo.
Ukukhetha okupholile kanye nokusetshenziswa kuyaba bucayi, futhi. Ngisho ne-ayoni enhle ye-ductile, i-graphite isebenza njenge-chip-breaker kodwa futhi ingaholela ekugqokeni okulimazayo. Isistimu yokupholisa enomfutho ophezulu ongena kahle ekusikeni futhi ikhiphe ama-chips amahle, anezintambo (yebo, ngisho ne-ferritic iron ingakhiqiza ama-chips stringy) kuwutshalomali olufanele. Yile mininingwane esebenzayo, yesitezi sesitolo ehlukanisa i-spec ye-theoretical material nengxenye engenziwa.
I-Shell Mold kanye ne-Investment Casting Advantage
Yilapho inqubo isebenzisana ngempela nempahla. Lapho usebenza no I-QT400-18 ezinqubweni ezifana nokusakazwa kwesikhunta segobolondo noma ukufakwa kwe-investimenti, i-QSY egxile kukho, uthola isethi ehlukile yezinselelo nezinzuzo uma kuqhathaniswa nokusakazwa kwesihlabathi esiluhlaza. Ukuqedwa okuphezulu okuphezulu kanye nokunemba kobukhulu kwalezi zinqubo ama-pluses amakhulu, ngokuvamile anciphisa isibonelelo sesitoko somshini. Kodwa amazinga okupholisa asheshayo atholakala ekubunjweni kwamagobolondo, isibonelo, angakhuthaza ukwakheka kwe-carbide noma i-pearlite ecolekile, engaphushela ubulukhuni phezulu kanye nokwelula kwehle.
I-Foundry kufanele inxephezele lokhu. Ngokuvamile kusho ukulungisa isu lokugomela—mhlawumbe kusetshenziswa isitofu esiphuma sekwephuzile esinezinto ezinamandla ezikhuthaza i-ferrite. Ngibambe iqhaza kumaphrojekthi lapho sashintsha khona ingxenye kusuka esihlabathini esiluhlaza kuya ekubunjweni kwegobolondo ukuze kubekezeleleke kangcono, futhi ukuthululwa kokuqala okumbalwa kuphume kanzima kakhulu. Kwadingeka sisebenze emuva ne-metallurgist ukuze silungise i-silicon kanye ne-inoculation ukuze sibuyele kulokho okuthambile, okunamandla. I-QT400-18 isakhiwo naphezu kokuqina okusheshayo. Ukusebenzelana kwakudala kwenqubo-okubalulekile.
Ezingxenyeni eziyinkimbinkimbi, ezinodonga oluncane kuma-valve noma ama-actuator, lokhu kulawula yikho konke. Ukutshala imali, negobolondo layo le-ceramic, kunikeza inkululeko enkulu yejometri kodwa kuveza izinselelo ezifanayo zesilinganiso sokupholisa. Okuhlangenwe nakho kwe-Foundry ekuphatheni le miphumela ye-microstructural kuzo zonke izinqubo ezahlukene yilokho okukhokhela ngempela. Akukhona nje ukwenza umumo; kumayelana nokwenza umumo ngezinto ezifanele, ezinokwethenjelwa kuyo yonke indawo.
Izindlela Zokwehluleka kanye Nomgibe Okwanele Okwanele
Esinye sezifundo ezibiza kakhulu sithatha ukuthi i-QT400-18 ihlala iyisinqumo esifanele sezingxenye ezingabalulekile. Ngike ngabona abakaki nama-levers enziwe ngayo ehluleka ukukhathala, hhayi ngoba umthwalo ubuphezulu kakhulu, kodwa ngenxa yokuzwela okungakacaci. I-ferritic matrix inamandla okukhathala aphansi uma kuqhathaniswa namandla ayo aqinile. Uma kukhona ikhona elicijile noma umaki womshini endaweni enengcindezi enkulu, kungase kuqale ukuqhekeka. Ibanga elifana ne-QT500-7, nesakhiwo salo se-pearlitic, ngokuvamile linokusebenza okungcono kokukhathala ezingxenyeni ezilayishwe ngamandla, ngisho nobude obuphansi.
Olunye ugibe i-embrittlement yezinga lokushisa eliphansi. Nakuba i-ferritic ductile iron inezakhiwo ezinhle ezithinta izinga lokushisa eliphansi ngokuvamile, insimbi yekhwalithi engeyinhle enokungcola okwedlulele noma i-micro-shrinkage ingaba brittle. Sike saba necala ngezindlu zemishini ezingaphandle ezaqhekeka kubanda. Impahla iqinisekiswe njenge I-QT400-18, kodwa ukuhlaziywa kokwehluleka kubonise ukuminyana okuphezulu kwe-oxide inclusions esebenza njengezikhulisi zokucindezeleka. I-Foundry yayisebenzise iphesenti eliphezulu lezinsalela ezingalungiswanga kahle. Isifundo besicacile: izinga lebanga aliyincibilikisi ikhwalithi amaphoyisa. Udinga umhlinzeki onokulawula ukushaja okuqinile kanye nezinqubo zokuncibilikisa zokuncibilikisa.
Yilapho ulwazi olubanzi lomphakeli lubalulekile khona. Inkampani ephinde isebenze ngama-alloys akhethekile, njengama-alloys asekelwe ku-nickel noma asekelwe ku-cobalt okukhulunywe ngawo kuphothifoliyo ye-QSY, cishe inendlela ehlakaniphe kakhulu yokuphatha isithando somlilo nokulawulwa kwamakhemikhali kulo lonke ibhodi. Leso siyalo sihlunga kuze kufike ekukhiqizeni kwabo amamaki ajwayelekile njenge-QT400-18, okuholela ensimbi ehlanzekile, ethembeke kakhulu.
Imicabango Ephethayo: Yingxoxo, Hhayi I-Monologue
Ngakho-ke, ukucacisa i-QT400-18 akumele kube umugqa owodwa emdwebeni. Kufanele kube ukuqala kwengxoxo nomphakeli wakho. Imibuzo ibalulekile: Ithini inhloso yakho ye-microstructure yaleli banga? Uyilawula kanjani ingxenye yami yejometri? Lithini ibanga lakho lokuqina elijwayelekile? Ungakwazi yini ukunikeza izincomo zomshini? Izimpendulo zizokutshela okwengeziwe mayelana nokusebenza kwengxenye yakho yomhlaba wangempela kunalokho okuyoke kufane nemininingwane yedatha.
Inani lomphakeli ohlanganisiwe—ongakwazi ukulandela ukwaziswa ukusuka esithandweni kuya engxenyeni eseyiqediwe emshinini—alinakugcizelelwa. Babona lonke uchungechunge lwembangela-nomphumela. Inkinga yomshini ilandelela emuva enkingeni yokusakaza, elandelela emuva kupharamitha yenqubo. Leyo mpendulo ye-close-loop yindlela ofinyelela ngayo ukuvumelana. Okwezinto ezibonakalayo ezifana ne-QT400-18, lapho iwindi lesakhiwo libanzi futhi udeveli esemininingwane yesakhiwo esincane, lokho kuvumelana kuwumehluko phakathi kwengxenye ekhona nje naleyo esebenza ngokwethembeka.
Ekugcineni, i-QT400-18 iyihhashi elisebenza ngezindlela eziningi, kodwa akuyona into ezenzakalelayo. Kuyisinqumo esidinga ukuqonda nokulawula. Yiphathe ngaleyo nhlonipho, ubambisane nenkampani eyenza okufanayo, futhi uzothola izinto ezihlala isikhathi eside, eziphathekayo othembele kuzo. Noma yini encane nje uthemba ukuthi izinombolo ephepheni zihumushela ensimbi esandleni sakho.
