Lapho onjiniyela becacisa izingxenye zensimbi esakazwa ngamandla adonsela phansi, abagcini nje ngoku-oda izingxenye—bazibophezela ekuqineni kwesakhiwo ngaphansi kwengcindezi, ukuzinza kobukhulu kuyo yonke imijikelezo yokushisa, nokumelana nokugqokwa kwesikhathi eside ezindaweni ezinobutha. Yingakho ukhetha okulungile i-gravity cast iron izingxenye ifektri akulona ibhokisi lokuhlola lokuthenga—kuyisinqumo sezinga lesistimu. Kwa-QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD., sibonile ukuthi izinqubo zokuphonsa ezingalungile ziphazamisa kanjani isikhathi sokusebenza kwephampu, indlela i-graphite morphology ecashile eshintsha ngayo ukuvalwa kwesihlalo se-valve engozini, kanye nokuthi isikhathi sokunyakazisa esingaguquki kwethula kanjani ukucindezeleka okuncane kwensalela ezindlini zamasilinda. Lokhu akukona ukukhathazeka kwethiyori. Amamodi okuhluleka aqinisekiswe inkambu esiwaxilonga masonto onke.
Kungani I-Gravity Casting Isaphumelela Ezinsimbi Ezibalulekile
I-Centrifugal noma i-die casting ingase inikeze ukubekezelelana okuqinile kumajiyometri alula—kodwa ukusakazwa kwamandla adonsela phansi kuletha lokho okudingwa umgomo obalulekile we-hydraulic kanye nowoyela negesi: isiqondiso esilawulwayo sokuqinisa, isinxephezelo sokuncipha esibikezelwayo, nokungaguquguquki kwensimbi kuzo zonke izingxenye eziwugqinsi. Sivamise ukuphonsa izindlu zesilinda sephampu ye-piston kufika ku-420 mm ukujiya kodonga ngamandla aqinile we-ASTM A48 Class 350—futhi sibambe ukubekezelelwa kwesikhundla se-GD&T okungu-±0.15 mm ebusweni obubalulekile obukhuphukayo. Kanjani? Ngokumatanisa ukulingisa kwesikhunta sesihlabathi (kusetshenziswa i-MAGMAsoft) nokuqapha kwe-thermocouple kwesikhathi sangempela ezindaweni ezintathu zokujula ngesikhathi sokuthela. Lokhu akuwona umsebenzi wokuqagela. Iwukulawula inqubo eqhutshwa yi-physics.
Isizinda sethu sisebenzisa isihlabathi se-silica esibuyisiwe esihlanganiswe ne-furan resin-eqinisekiswe ku-ISO 22988 ngokuziphatha kokubola kwe-binder. Kodwa ukukhetha kwezinto ezibonakalayo kuphela akuqinisekisi ukusebenza. Siqaphele ukuthi amazinga okupholisa angalawuleki angaphansi kuka-120°C/ihora abangela ukwakheka kwe-graphite yohlobo D ku-ASTM A278 Grade 65-45-12 ductile iron—okuhlobana ngokuqondile nempilo yokukhathala ephansi engu-23% kuma-winch center shaft rollers. Ngakho-ke sisebenzisa amaphrothokholi okupholisa komoya ngempoqo alinganiswa ngengxenye yesisindo kanye nemoduli yesigaba. Iqoqo ngalinye lithwala ukulandeleka okugcwele: inombolo encibilikayo, izinga lokushisa elithelayo, ijika lejika elipholile, nokuqinisekiswa kokuqina kokugcina.
Lapho Imishini Ihlangana Nokusakaza-Futhi Kungani Ukuhlanganiswa Okuqondile Kubalulekile
Ukusakaza kwamandla adonsela phansi kusetha isisekelo. I-Precision machining iletha izindawo ezisebenzayo. Ukwehlukanisa lezi zinqubo kumema ubungozi. Silandelele u-68% wokungavumelani kwe-dimensional ekulingiseni komshini wenkampani yangaphandle ukuya ekushintsheni kwedatha phakathi kokusakaza nokusethwa kwe-CNC—ikakhulukazi ezisekelweni zephampu ezingalingani ezinezindiza eziningi ezikhwezayo. Isixazululo sethu? Ukulawulwa kokugeleza kokusebenza komshini: u-opharetha ofanayo we-CMM uqinisekisa ubukhulu bokusakaza *kanye* nejometri eqediwe; into efanayo ibeka izigaba zombili; Ilebhu efanayo ye-metrology iqinisekisa ngaphambi nangemuva kokwelashwa kokushisa.
Lokhu kuhlanganiswa kunika amandla izici ezifana ne-AMS 5387 cobalt alloy alloy efaka ezicindezelwe ezindlini zensimbi ezisansimbi—lapho ukungezwani kokwanda okushisayo kufanele kumodelwe phansi kufike ku-±0.002 mm ukuphazamiseka. Noma ama-nozzle asekelwe ku-T800 anokumelana nokuqina kodonga okungu-0.05 mm, enziwe ngomshini ngokuqondile avela kuzikhala ezingenalutho ngaphandle kokuhlanekezela okwehlisa ingcindezi. Asikukhiphi umuthi wokushisa ngaphandle. Iziko lethu le-vacuum lisebenzisa imijikelezo eqinisekisiwe nge-AMS 2750E ngayinye, ngokugawulwa kwe-pyrometer okuqhubekayo. Ngoba uma i-valve yakho yokucindezela isebenza kubha ye-415, "ukuvala ngokwanele" akuyona inketho.
Ukuthi Ukuqinisekiswa Komhlaba Wangempela Kubukeka Kanjani
Amakhasimende ayabuza: “Ukufakazela kanjani ukwethembeka?” Hhayi ngezitifiketi zodwa—kodwa ngedatha yokuhlola. Amapulagi ethu e-cobalt-nickel alloy ahlolwa ukuguguleka kwemijikelezo engu-10,000 ku-3.5% we-NaCl brine ku-85°C, alingisa isevisi yephampu yasolwandle. Imiphumela iyabonisa <1.2 μm/ngonyaka ukulahlekelwa kwezinto ezibonakalayo—kuqhathaniswa nomkhakha-isilinganiso esingu-4.7 μm/ngonyaka. Kumarola ewintshi yemoto yobunjiniyela, siqinisekisa ubuqotho bangaphezulu sisebenzisa ukuhlaziya komsindo we-Barkhausen ukuze sithole ukushiswa kokugaya okungabonakali ekuhlolweni kokubona. Futhi konke ukuthunyelwa kufaka phakathi izitifiketi zempahla egcwele: Imibiko ye-OES spectrography, amajika okuhlola aqinile, nezithombe ze-microstructure ezichazwe nge-ASTM E112 ngayinye.
Siphinde sabelane ngezifundo esizizuze kanzima. Isibonelo: amaqoqo okuqala ama-flange epompo angajwayelekile abonise ukuvuza kwe-gasket ngaphambi kwesikhathi. Imbangela? Ukukhipha isikhunta akwanele ukuthululwa kwe-high-backpressure. Isixazululo? Amaphrinti aklanywe kabusha ayinhloko anama-radial vents angu-0.3 mm—aqinisekiswe i-X-ray CT scan. Manje lawo ma-flange afinyelela ukuvuza okungu-zero ku-1.8 × ingcindezi elinganiselwe. Lowo umehluko phakathi komphakeli nozakwethu.
Ukukhetha Imboni Yakho Yezingxenye Zensimbi Ye-Gravity Cast—Ngaphandle Kwencwajana
Uma uhlelo lwakho lokusebenza ludinga i-ASTM A ductile iron ene-spheroidization >92%, noma idinga ama-callouts e-GD&T ukuze uthole isikhundla sangempela samaphethini anezimbobo eziyi-12, qinisekisa lezi zinto ezintathu ngaphambi kokusayina:
- Ingabe bangabanikazi bawo wokulingisa kanye nokwenza imishini? Izinyathelo ezithathwe ngaphandle zicekela phansi ukulandeleka futhi zethule ubungozi beshejuli.
- Bangakukhombisa imibiko yangempela ye-CMM—hhayi nje ukudlulisa/ukuhluleka izitembu? Bheka amanani okuchezuka eluhlaza, hhayi nje omaka abaluhlaza.
- Ingabe bayashicilela imvamisa yabo yokuhlola isihlabathi? Isihlabathi esitholiwe kabusha sidinga umswakama wansuku zonke nokuhlolwa kokungeneka ngokwe-ISO 10083 ngayinye.
QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD. ihlangana bobathathu. Asikali ivolumu—sijulisa amandla okusakaza amandla adonsela phansi ama-alloy aphezulu lapho ukunemba nokusansimbi kuhlangana khona. Uma i-oda lakho elilandelayo libandakanya ukukhishwa kwensimbi okuyinkimbinkimbi okufanele kusebenze ngaphansi kwengcindezi enkulu, izinga lokushisa, noma ukugqwala, qala ngesibuyekezo sobuchwepheshe—hhayi isicelo sekhwowuthi. Ngoba imboni yezingxenye zensimbi enamandla adonsela phansi ayiyona enekhathalogi enkulu. Yiyo ekhuluma ulimi lwakho lobunjiniyela kahle.
