Ukulimala Kokutshala Kwezimali: Yini Engahamba Kahle, Kungani, nokuthi Abasunguli Bekhwalithi Bayivimbela Kanjani

Konke ukulingisa kwensimbi kuyindaba yensimbi ewuketshezi eqandayo ibe yisimo esiqinile, futhi njenganoma iyiphi indaba, ingaphuma ngaphandle kombhalo. I-Porosity, ukuncipha, ukufakwa, ukuvala okubandayo - lawa magama avela emibikweni ye-Foundry nasezingxoxweni ze-RFQ, futhi anezindleko zangempela uma evela ezingxenyeni zakho. Lesi sihloko siwumhlahlandlela wolimi olulula mayelana nokukhubazeka okubalulekile ekutshalweni kwezimali: yini ebangela ngayinye, ukuthi zitholwa kanjani, futhi - okubaluleke kakhulu - ukuthi ikhwalithi ye-foundry yenzani ukuze ivimbele ukuthi lingafinyeleli kuwe.

Okokuqala, Izindaba Ezinhle

Ukutshala imali kuyinqubo ebekezelela iphutha kakhulu yejometri eyinkimbinkimbi ngoba ilawula uhambo lwensimbi kangcono kunezinye izindlela. Iphethini ye-wax inikeza umgodi oqondile, igobolondo le-ceramic linikeza isikhunta esihlanzekile, futhi i-Foundry ingakwazi ukondla insimbi eqinisayo ngendlela elawulwayo. Umphumela: amazinga okukhubazeka emigqeni ye-silica sol eqhutshwa kahle aphansi, futhi izingxenye ezidinga ukucindezela, ukumelana nokukhathala noma ukuhlanzeka kwezimonyo zenziwa ngale ndlela njalo. Izinkinga azinakugwenywa - ziwukwehluleka kwezinqubo, futhi ubunjiniyela bezinqubo ezinhle buyazivimbela.

I-Shrinkage Porosity: Iphutha Elingaqondwa Kakhulu

Njengoba insimbi ewuketshezi iphola iqine, iyancipha - izinsimbi cishe ngo-2-3% ngevolumu. Uma i-shrinkage inganxeshezelwa ngokuphakelwa kwensimbi eyengeziwe ye-liquid endaweni eqandisiwe, ingxenye iphetha nge-voids yangaphakathi: i-shrinkage porosity. Lesi yisici esikhathaza abathengi abaningi, futhi ngesizathu esihle: singaphakathi, asibonakali ngaphandle, futhi singahlala lapho ungafuni khona - ngaphansi kwendawo evaliwe, kumphathi owugqinsi, ekugxilweni kwengcindezi.

Kungani kwenzeka: ukuqina kuqala odongeni lwesikhunta futhi kuqhubekele ngaphakathi. Izifunda zokugcina ukuba yiqhwa - izigaba eziwugqinsi, "izindawo ezishisayo" - zingezokugcina ukuthola insimbi yokuphakelayo. Uma i-Foundry ingakaklami ukulingisa ngokudla okwanele (izikhuphukeli/iziphakeli) kanye nesango, izifunda ezilambile zidonsa izikhala.

Indlela abasunguli bekhwalithi abayivimbela ngayo:

• Ukulingisa idizayini yokondla - izisekelo zesimanje zisebenzisa ukulinganisa kokuqinisa (isb, i-MAGMA noma okulinganayo) kuyo yonke ingxenye entsha ngaphambi kokuthululwa kokuqala, okubonisa lapho izindawo ezishisayo zizokwakha futhi zilinganise iziphakeli ukuze zinxephezele.
• Ukubekwa kwesikhuphukeli nosayizi — okokuphakelayo kubekwe ezingxenyeni ezisindayo, ezilinganiselwe ukuze zihlale ziwuketshezi kuze kube yilapho ukusakaza kuqina, bese zikhishwa ngemva kokucubungula
• Ukugodola — Ukubanda kwangaphakathi kusheshisa ukuqina ezingxenyeni ezisindayo, kudonsele indawo yokuncipha lapho kungaphakelwa khona
• I-alloy-aware gating - i-alloy ngayinye ishwabana ngokuhlukile; amasistimu wokugenca aklanywe ebangeni ngalinye

Itholwa kanjani: Ukuhlolwa kwe-X-ray (RT) kanye ne-ultrasonic (UT) ezingxenyeni zesampula, kanye — ngokusakazwa okubucayi — ukuhlukaniswa nokufakwa kwama-athikili okuqala ukuze kuqinisekiswe ukuzwakala kwangaphakathi ngaphambi kokuthi ukukhiqizwa kuqale.

I-Gas Porosity: Inkinga Yebhamuza

I-porosity yegesi ibangelwa igesi evaleleke ensimbi - amagesi ancibilikisiwe (ikakhulukazi i-hydrogen ezinsimbi), amagesi esikhunta, noma umoya obanjwe ngesikhathi sokuthululwa. Njengoba insimbi iba yiqhwa, igesi encibilikisiwe iphuma esixazululo bese yenza amabhamuza ayindilinga. Ngokungafani nama-ragged, ama-angular voids of shrinkage, ama-gas pores ayindilinga futhi avame ukusabalalisa esigabeni.

Kungani kwenzeka: impahla yokushaja emanzi noma engcolile, izinga lokushisa eliphezulu elithelayo, igobolondo elimanzi noma izinto ezibalulekile, ukungaphumi kahle kwesikhunta, noma ukuthululwa okunamandla okumunca umoya emfudlaneni.

Indlela abasunguli bekhwalithi abayivimbela ngayo:

• Izinto zokushaja ezihlanzekile, ezomile kanye nomkhuba olawulwayo wokuncibilika (ukukhishwa kwe-oxidation yezinsimbi)
• Ukudubula kwegobolondo okususa wonke umswakama ku-ceramic ngaphambi kokuthela
• Ukuthululwa okulawulwayo - ukugeleza kwe-laminar, izinga lokushisa elilungile, kanye nesivinini sokuthulula esihambisana negobolondo
• Idizayini ye-vent - ngakho-ke umoya osusiwe endaweni uyabaleka esikhundleni sokuba uvaleleke

Itholwa kanjani: Ukuhlolwa kwe-X-ray; I-porosity yegesi engaphezulu ingase ibonakale njengemigodi emincane ngemva kokuqhuma, yingakho i-Foundry enhle ihlola izihloko zokuqala kanye nekhono lokucubungula, hhayi izingxenye zokugcina kuphela.

Okufakiwe: Imizimba Yangaphandle Ensimbi

Okufakiwe kuyizinhlayiya ezingezona ezensimbi - i-slag, i-refractory, isikhunta, ama-oxides - abanjwe ekubunjweni. Ziyisici esivame ukubangela ukwehluleka "ukuvuza" ezingxenyeni zokucindezela kanye nezimanga zomshini lapho umsiki eshaya inhlayiya ye-ceramic eqinile.

Kungani kwenzeka: ukuncibilika okungcolile (i-slag ethathwe esithandweni), igobolondo eligugulekile eliwela emgodini, noma amafilimu e-oxide akhiwe ngesikhathi sokuthululwa kwesiyaluyalu.

Indlela abasunguli bekhwalithi abayivimbela ngayo:

• Ukulawulwa kwe-slag - idizayini ye-ladle, i-slagging ngaphambi kokuthululwa, kanye nezinhlelo zokuthulula ezibamba i-slag ngaphambi kokuba ifinyelele emgodini (i-gating enezihlungi - izihlungi zegwebu le-ceramic zijwayelekile emigqeni yekhwalithi)
• Ubuqotho begobolondo — amagobolondo aqinile, aboshwe kahle angaphehli; ukucwiliswa nokudubula okulawulwayo
• Umkhuba wokuthulula ohlanzekile — ukulawula izinga lokushisa, isiphithiphithi esincane, nezihlungi ezindaweni ezibucayi
• Izihlungi zegwebu le-Ceramic kusistimu yokugenca zibamba okufakiwe ngaphambi kokuthi zingene ekubumbeni - ukuvikela okukodwa kokufakwa okuphumelelayo

Itholwa kanjani: I-X-ray yokufakwa kwangaphakathi, izinhlayiya kazibuthe (MT) zalezo eziseduze, nokuhlolwa okubonakalayo kwezindawo ezinomshini.

Ama-Cold Shuts kanye nama-Misruns: Izinkinga Zokugeleza

Ukuvala okubandayo kwenzeka lapho imifudlana emibili yensimbi ihlangana kodwa yehluleka ukuhlangana ngokuphelele - umugqa obonakalayo noma ongabonakali, ngokuvamile ekupheleni kwengxenye encane. I-Misruns ayigcwalisi engaphelele, lapho insimbi ivele ingafinyeleli engxenyeni yesikhunta. Zombili zihlobene nokugeleza futhi zombili zivela kaningi ekulingiseni odongeni oluncane.

Okwenza kwenzeke: insimbi ethelwe ibanda kakhulu, igobolondo libanda kakhulu, izingxenye ezincane eziba yiqhwa ngaphambi kokugcwalisa, noma ukuphuma umoya okwanele okucindezela insimbi emuva.

Indlela ama-foundries ekhwalithi ayivimbela ngayo: ukulawulwa okunembile kwezinga lokushisa nge-alloy ngayinye, amagobolondo ashiswe ngaphambili lapho kudingeka, ukungeneka okulungile kwegobolondo, isango elidizayinelwe ukugcwalisa izigaba ezizacile kuqala, nokubeka umoya ukugwema ukucindezela emuva. Ukulingisa kubonisa amaphethini okugcwalisa ngaphambi kokuthela kokuqala.

Itholwa kanjani: ukuhlolwa okubonakalayo kanye nokuhlolwa kokungena (PT) ezindaweni ezisolwayo; izingxenye zodonga oluncane ziyahlolwa ekubuyekezweni komklamo wokulingisa.

Ukudabula Okushisayo: Ukuqhekeka Ngaphansi Kwengcindezi

Izinyembezi ezishisayo ziyimifantu eyakheka ngesikhathi sokuqina, lapho ukusakaza okuqinile kancane kusebuthakathaka futhi kugcizelelwa ukushwabana - ngokuvamile ekushintsheni kwesigaba, amakhona acijile, noma lapho igobolondo limelana nokufinyela.

Kungani zenzeka: ikona elicijile ligxilisa ubunzima; igobolondo eliqine kakhulu noma eliqine kakhulu libamba ukulingisa ngokumelene nokuncipha kwalo; ingxubevange eshisayo-ifushane (ebuthakathaka ekushiseni okuphezulu) ikhala kalula.

Ukuthi izisekelo zekhwalithi ziyivimbela kanjani: izibopho ezivulekile esikhundleni samakhona abukhali (umthetho wokuklama esiwusebenzisayo ekubuyekezweni komdwebo), izinto zegobolondo eziklanyelwe ukudilika kancane ngesikhathi sokupholisa, nokukhetha kwe-alloy okulinganisa amandla ashisayo. Ukulingisa kubikezela ingozi yokukhala futhi i-Foundry ilungisa iphethini negobolondo ngokufanele.

I-Foundry's Defect-Prevention System

Ukuvimbela akuyona inhlanhla — kuwuhlelo, futhi umehluko omkhulu phakathi komphakeli wabalingisi kanye nozakwethu ophonsayo. Uhlelo olusebenzayo lunezendlalelo ezine:

1. Ukulingisa-ubunjiniyela bokuqala. Ukuqiniswa nokugcwalisa ukulingisa kuyo yonke ingxenye entsha ngaphambi kokuthi kunqanyulwe ukusebenzisa amathuluzi. Lokhu ukuvimbela ukukhubazeka okushibhile okukhona - inkinga ebanjwe ekufanisweni ibiza ihora; inkinga efanayo ekukhiqizeni ibiza inqwaba elahlekile.
2. Ukubhujiswa kwe-athikili yokuqala kanye ne-NDE. Ukukhiqizwa kokuqala kwenziwa nge-X-ray, kuhlukaniswe, futhi kuhlolwe nge-metallographically. Yilapho umsindo wangaphakathi ofakazelwa khona - ngaphambi kokuthi kukhishwe ithuluzi ukuze kuqhutshwe uchungechunge.
3. Ukulawulwa kwenqubo yezibalo ekukhiqizeni. Amapharamitha ashayela amaphutha - izinga lokushisa elithelayo, ikhwalithi yegobolondo, ikhemistri encibilikayo - iyalinganiswa futhi ilawulwe ngemikhawulo, hhayi nje "ihlolwe."
4. Amasango okuhlola angaphakathi. I-RT/UT ezingxenyeni zesampula kumafrikhwensi achaziwe, i-MT/PT ezindaweni ezibucayi, kanye nokuhlolwa kwe-CMM enobukhulu - ngakho-ke i-drift ibanjwa ngamahora, hhayi ngemva kokuthunyelwa.

Kwa-Ningbo Ruican, lolu ilona kanye uhlelo oludingwa isitifiketi sethu se-IATF 16949 futhi iminyaka yethu engu-17+ yokuhlangenwe nakho kokusakaza esithuthukisiwe. Uma umdwebo wekhasimende unejiyomethri eyingozi - umphathi osindayo eduze kodonga oluncane, ikhona langaphakathi elicijile, ukuhlolwa kwengcindezi enzima - ithimba lethu lonjiniyela liyawuhlaba umkhosi ngekhotheshini, hhayi ngemva kwenqwaba yokuqala embi.

Yini Abathengi Okufanele Babuze I-Foundry Yabo

Impendulo ye-Foundry kule mibuzo ikutshela ngaphezu kwanoma iyiphi incwajana:

1. "Ingabe uyasebenzisa ukulingisa kokuqinisa kuzo zonke izingxenye ezintsha?" — Uma impendulo ithi "izingxenye eziyinkimbinkimbi kuphela," buza ukuthi yiziphi izingxenye ezeqiwa nokuthi kungani.
2. "Luthini uhlelo lwakho lokuqinisekisa i-athikili yokuqala?" - Ingabe benza i-X-ray futhi bahlukanise izihloko zokuqala, noma bahlole ubukhulu?
3. "Uzibekaphi izihlungi esangweni lakho?" - Izihlungi ze-Ceramic emigqeni yekhwalithi zijwayelekile; "Asizisebenzisi" kuwuphawu oluyisixwayiso.
4. "Athini amanani akho okulahlwa ahlobene nesici ezingxenyeni ezifanayo?" — Inombolo yangempela, noma ingeyena uziro, iyimpendulo oyifunayo.
5. "Yini oyishintshile ngemuva kwesigameko sakho sokugcina sokukhubazeka?" - Isiko lokuthuthuka okuqhubekayo likhombisa ezimpendulweni ezibambekayo.

Umugqa Ophansi

Amaphutha okusakaza awayona into engaqondakali. Ngamunye wabo - ukuncipha, i-gas porosity, inclusions, ukuvala okubandayo, izinyembezi ezishisayo - kunesizathu ekulawuleni inqubo, futhi wonke umuntu angavinjelwa ngobunjiniyela. Iziqalo ezivimbela ukukhubazeka ngokungaguquki yilezo ezinekhono lokulingisa, isiyalo sokuqinisekisa i-athikili yokuqala, i-SPC ekukhiqizeni, kanye nesistimu yekhwalithi eyenza ukuvimbela kube isibopho esikhundleni sokuzikhethela.

I-Ningbo Ruican ikhiqiza ukufakwa kwe-investimenti ku-carbon steel, i-alloy steel, insimbi engagqwali ne-ductile iron, enomshini wangaphakathi we-CNC, amakhono e-NDE, kanye nokuphathwa kwekhwalithi okuqinisekisiwe kwe-IATF 16949. Uma unengxenye lapho umsindo wangaphakathi ubalulekile - umzimba wevalvu, i-impeller, ubakaki wesakhiwo - sithumelele umdwebo futhi sikubonise uhlelo lwethu lokuvimbela olusebenzayo.

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