Izinsimbi ezimpunga ziletha ukuqina okungenakuqhathaniswa nokusebenza kahle kwezindleko zezingxenye zezimboni ezinengcindezi ephezulu—ikakhulukazi lapho ukuncibilika kokudlidliza, ukumelana nokuguga, nokuzinza kokushisa kubaluleke kakhulu. Kwa-QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD., sikhiqize ngaphezu kuka-12,000 izingxenye ezimpunga zensimbi ezimpunga zemizimba ye-hydraulic valve, izindlu zamaphampu, nezigubhu zamabhuleki emoto yobunjiniyela kusukela ngo-2020. Yonke ingxenye ihlangabezana namandla e-ASTM A48 Class 30B ubuncane bokushuga (207 TMiteled MPa to Amorphe) I-A247—ngoba ukusabalalisa kwe-flake okungahambisani kubangela ukuqhekeka kokukhathala ngaphambi kwesikhathi kuma-cylinder liner ngaphansi kwengcindezi yomjikelezo.
Kungani I-Grey Iron Isaphumelela Lapho Ibala Khona
Abanye onjiniyela bacabanga ukuthi i-ductile iron noma insimbi kufanele ithathe indawo yensimbi empunga ekusetshenzisweni okudingayo. Kodwa idatha yomhlaba wangempela ixoxa indaba ehlukile. Ocwaningweni lwakamuva lwezindlu zamasilinda ephampu yepiston engama-475 kuyo yonke imikhumbi yesevisi yasezindaweni zikawoyela zaseNyakatho Melika, izinguqulo ze-iron ezimpunga zithathe isikhathi eside ngo-18% kunamayunithi afanayo e-ductile iron ngaphansi kwemithwalo efanayo engu-3,000-psi pulsating. Kungani? Ama-graphite flakes asebenza njengamadamu okugcoba akhelwe ngaphakathi phakathi nezimo zokuthambisa emngceleni—futhi amunca amandla okudlidliza abengasakazekela kubakaki abakhuphukayo nezimpawu.
Lokhu sikubona nsuku zonke kulayini wethu wokusakazwa kwesihlabathi: lapho amakhasimende eshintsha esuka ku-ductile iron aye ku-ASTM A159 G3000 yensimbi empunga ukuze athole amarola e-winch center shaft, isikhathi somshini sehla ngo-22% ngenxa yokuqina okuphansi (187–229 HBW vs. 241–269 HBW) kanye nokuziphatha okuphakeme kokuphulwa kwe-chip. Lokho akuyona ithiyori—kukalwa ku-Okuma MULTUS U3000 yethu ye-multi-axis CNCs ngesikhathi sokuqeda ukusebenza. Ayikho indlala epholile. Akukho ukuxoxa kwethuluzi. Ubuso obufanayo buphela ngo-Ra 1.6 µm.
I-Grey iron iphinde ixazulule izinkinga zokuphatha ukushisa ezinye izinto ezingakwazi. Izisekelo zephampu ezivezwe ekuqubukeni koketshezi olushisayo ngezikhathi ezithile (isb., 60°C ukuya ku-120°C emijikelezweni yamasekhondi angu-90) zibonisa ukuhlanekezela okungaphansi ngo-40% okune-iron empunga uma kuqhathaniswa nokubunjwa kwensimbi engagqwali engu-316. Isizathu? I-thermal conductivity ephezulu (50 W/m·K vs. 16 W/m·K) kanye ne-coefficient ephansi yokunwetshwa kwe-thermal (10.4 × 10⁻⁶/°C vs. 16 × 10⁻⁶/°C). Siqinisekisa lokhu sisebenzisa i-infrared thermography ngesikhathi sokuhlola ukusebenza—akukho ukuqagela.
Izindleko Ezifihliwe Zokusakaza Kwensimbi Empunga "Eshibhile".
Akuzona zonke izinsimbi ezimpunga ezenza okufanayo. Sihlole izingcaphuno ezingu-31 zabahlinzeki bempahla ye-ASTM A48 Ikilasi 25 lemizimba yamavalvu ensimbi empunga—futhi sathola u-68% wehlulekile ukuhlola okuyisisekelo kwensimbi. Izinkinga ezijwayelekile zihlanganisa i-phosphorus eyeqile (>0.12%), okuqukethwe kwe-pearlite okungalawuleki (<80% ezindaweni ezithwala imithwalo), kanye ne-magnesium carryover eyinsalela evela ekuthelweni kwe-iron edonsa ngaphambili. Lawa maphutha adala ukuphuka okufiphalayo ekuqaleni okubandayo noma ukukhukhuleka okunohlangothi ngemva kokuhamba ngebhayisikili.
E-QINGDAO QIANGSENYUAN, yonke inyibiliko yensimbi empunga iqala ngensimbi yengulube ene-phosphorus ephansi eqinisekisiwe (≤0.05% P) nezihlungi zokusanhlamvu ze-ferrosilicon. Sibamba okulingana nekhabhoni (CE) phakathi kuka-3.7–4.1 ukuze silinganise uketshezi namandla—singagijimisi izinombolo eziqine kakhulu ngokulahlekelwa amandla. Amalogi ethu esithandweni alandelela isibabule, i-manganese, namazinga okupholisa ngesikhathi sangempela. Uma i-CE ikhukhuleka ngaphezu kuka-±0.05, siyakulahla ukushisa—hhayi ukukwehlisela phansi.
Leso siyalo sinomvuzo. Amakhasimende abika ukwehluleka kwenkambu enguziro ezingxenyeni zethu zepompo yensimbi empunga ehambisana ne-AMS 5387 phakathi nezinyanga ezingama-42 zokusebenza okuqhubekayo ezinkundleni zokuxhumana zaseNingizimu-mpumalanga ye-Asia. Ukumelana nokugqwala akwenzeki ngokuzenzakalelayo-kodwa i-microstructure yethu elawulwayo imelana nokuqhekeka kwengcindezi ye-sulfide kangcono kunamamaki e-generic foundry.
Ungayikhetha Nini I-ayina Empunga Ngaphezu Kwezinye
Khetha insimbi empunga uma isicelo sakho sidinga:
- Ukudlidliza damping - Kubaluleke kakhulu ezisekelweni ze-compressor, izindlu zokunciphisa amagiya, namafreyimu okuhlola
- Izinto ezizigcobayo ezizigcobayo - ilungele izigubhu zamabhuleki, amapuleti e-clutch, nezindlela zokuqondisa ezishelelayo
- Ukuzinza kwe-Dimensional ngaphansi kokuhamba ngebhayisikili okushisayo - kufakazelwa kumabhulokhi enjini, ama-multifold exhaust, nama-heat exchanger cores
- Ukukhiqizwa kwevolumu ephakathi nezindleko ezizwelayo - Izindleko zensimbi empunga zisebenza ngaphansi kuka-30-50% ngaphansi kokufakwa kwe-investimenti yezingxenye>5 kg
Gwema insimbi empunga kuphela uma kudingeka ukuqina komthelela omkhulu (isb., amazinyo ebhakede le-excavator) noma lapho ukuchayeka kungaphezu kuka-500°C ngokuqhubekayo. Kukho konke okunye—okuhlanganisa ama-valve okucindezela alinganiselwe ku-10,000 psi, izindlu ze-piston pump cylinder ezibekezelela u-0.025 mm, kanye nama-winch roller emoto yobunjiniyela aphatha imithwalo engaguquki engamathani angama-80—insimbi empunga isalokhu iyinketho yobunjiniyela.
Ukubambisana Kwangempela Kuqala Ngobuhlakani Bezinto
Ukukhetha insimbi empunga akumele kusho ukukhetha phakathi kwentengo nokusebenza. Kwa-QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD., siphatha ukukhetha kwezinto njengobunjiniyela obuhlanganyelwe—hhayi ukuthenga. Ithimba lethu libuyekeza ama-callouts e-GD&T ngaphambi kokucaphuna, lihlaba umkhosi izingozi ezingaba khona zokushwabana ezigabeni ezinodonga oluncane, futhi liqinisekise ukulingisa kokugeleza kwesikhunta ngokumelene nokuhlolwa kokuthela kwangempela. Asithumeli nje ukusakazwa ngomkhumbi—siletha ama-microstructures aqinisekisiwe, ukulandeleka okubhaliwe phansi kwenombolo yokushisa, nemibiko yobukhulu esayinwe abahloli abagunyazwe i-CMM.
Kumakhasimende acacisa ukulingwa kwe-iron empunga, sincoma ukuthi uqale ngemibuzo emithathu: Iyiphi imodi yokuhluleka ehamba phambili kumklamo wakho wamanje? Yiziphi izindawo ezithwala umthwalo uma ziqhathaniswa nalezo ezidinga ukubekwa uphawu? Futhi ama-gradients ashisayo azosakazwa kanjani kuyo yonke ingxenye ngesikhathi sokusebenza? Phendula lokho—futhi sizokufanisa nebanga elifanele, umzila wokucubungula, kanye nephrothokholi yokuhlola.
Ukulingwa kwensimbi empunga akubona ubuchwepheshe befa. Ziyizixazululo ezenziwe ngokunemba ezicwengisiswe eminyakeni eyi-150 — futhi zisathuthuka. Esikhungweni sethu esithobela i-ISO e-Qingdao, konke ukuthululwa kuthuthukisa lokho kuguquka. Ngoba ukuqina akukhona nje amandla. Imayelana nokubikezela. Ukuvumelana. Lawula.
