Insimbi engenasici ayixhathisi nje umhlwa-iyaxhathisa ukuthomalalisa. Xa indlu yevalve yehydraulic kufuneka ibambe ibar engama-420 ngaphandle kokuvuza kancinci, xa isilinda sempompo sijikeleza kwi-3,600 rpm phantsi kodaka oluludaka, okanye xa i-winch shaft engaselunxwemeni inyamezela inkungu yetyuwa kunye ne-cyclic torsion iminyaka eyi-15 - ngokuchanekileyo kuphela. ukugalela intsimbi engatyiwayo ihambisa imfezeko yemetallurgical kunye nedimensional fidelity efunekayo.
Siphose ngaphezulu kwe-12,000 yensimbi engenasici ukususela ngo-2018-kungekhona njengezinto ezingenanto eziqhelekileyo, kodwa njengeendibano ezisebenzayo ezine-callouts ye-GD & T eqinile kune-± 0.02 mm, umphezulu uphela ukuya kutsho kwi-Ra 0.8 µm, kunye nokulandelwa okupheleleyo ukusuka kwindawo yokushisa ukuya kwingxelo yokugqibela yokuhlola. Kwimveliso yokwenyani, siye sabona abathengi besala iinxalenye hayi ngenxa ye-porosity, kodwa ngenxa yokuba ukutenxa kwe-0.05 mm kwi-flange flat kubangele ukuvuthuza kwe-gasket ngexesha lokugunyaziswa kwentsimi. Kungenxa yoko le nto ukuphosa isinyithi esingenasici akukho malunga nokugalela isinyithi-kumalunga nokulawula i-kinetics yokuqinisa, ukulawula i-interdendritic shrinkage, kunye nokulungelelanisa ukuhamba kweenkozo kunye neendlela zomthwalo ngaphambi kokuba i-ladle yokuqala ifakwe.
Kutheni uTyalo-mali luphumelela kwi-Complex Stainless Steel Geometry
Ukugalelwa kwesanti kubamba izindlu ezinkulu kunye namacandelo ashinyeneyo-kodwa kwiivalvu zoxinzelelo ezinodonga olucekethekileyo, ii-multi-port manifolds, okanye abathwali beblade ye-turbine, utyalo-mali lulawula. Inkqubo yeqokobhe leceramic yayo ibamba iimpawu ezintle njenge-0.3 mm iimbambo kunye nokunyamezela ukuya kuthi ga kwi-CT4 ngokwe-ISO 8062. Sihlala siphosa i-CF8M (ASTM A351) kunye ne-F316L (UNS S31603) kwiindawo ezinobunzima bodonga obungaphantsi kwe-2.5 mm kunye nomlinganiselo ongaphezu kwe-12: 1 kumatshini oqinileyo ongenakwenzeka.
Kodwa impumelelo ixhomekeke kwizinto ezintathu ezingaxoxiswanayo:
- Uyilo lwepateni olulindele ukufinyela kwe-thermal-kungekhona nje i-shrinkage yomgca (1.8-2.2% ye-316), kodwa ukuphazamiseka kwe-anisotropic kwiifayili kunye neengqungquthela;
- Iprofayile yokudubula iqokobhe ilungelelaniswe kwi-alloy chemistry—amabakala aphezulu echromium/nickel afuna ukuthotywa kancinane kwewaxisi kunye nokutshisa kwangaphambi kwexesha elide ukunqanda ukutsalwa kwekhabhoni;
- Ukugalela ulawulo lobushushu ngaphakathi ±15°C-eshushu kakhulu imema i-macrosegregation; ukubanda kakhulu kubangela ukuvalwa okubandayo kwiimbaleki ezingaphantsi kwe-4 mm ububanzi.
Omnye umxhasi we-oyile yaseMntla Melika utshintshe ukusuka kwisanti-cast F22 ukuya kutyalo-mali-i-CF8M yeendibano zomzimba eziminxayo. Izinga labo lokungaphumeleli liye lehla ukusuka kwi-7.3% ukuya kwi-0.4%-kungekhona ngenxa yensimbi engcono, kodwa ngenxa yokuba utyalo-mali lukhuphe iziphene ezingundoqo eziphazamisa ukunyaniseka komda woxinzelelo.
Iindleko ezifihliweyo zamaBanga eNtsimbi “eMgangatho”
CF8, CF8M, CF3, CF3M-ezi azitshintshi. Siye sabona iinjineli zicacisa i-CF8 yendawo yempompo yamanzi olwandle, kuphela ukufumanisa ukubola komngxuma emva kweenyanga ezili-14. Ngoba? I-CF8 iqulethe ≤0.08% yekhabhoni kwaye akukho molybdenum. Kwiindawo ezityebileyo zekloridi, i-PREN yayo (i-Pitting Resistance Equivalent Number) ihleli kwi-18-20. I-CF3M, kunye ne-2.0-3.0% ye-Mo kunye ne-carbon ephantsi, iqhubela i-PREN ukuya kwi-25-28-umahluko ocacileyo.
Ukhetho lwezinto eziphathekayo alukho ithiyori. Iyasebenza:
- F304L: Yamkelekile kubahambisi bomgangatho wokutya—hayi ngenkonzo yerhasi emuncu ngaphezu kwama-60°C;
- F316L: Ubuncinci bobuninzi be-hydraulic hydraulic-kodwa kuphela ukuba isisombululo-sihlanjululwe kwaye sagqithiswa emva kokuphosa;
- I-CA6NM (ASTM A995 Gr. 4A): Ifunekayo kwii-impellers zamanzi olwandle zesantya esiphezulu-i-4% yayo ye-Ni + 13% Cr + 0.05% N ihambisa amandla okudinwa > 720 MPa.
Siqinisekisa lonke ubushushu nge-PMI (i-Positive Material Identification) kwaye sigcina iingxelo zovavanyo lokusila ezibonisa eyona Cr, i-Ni, i-Mo, kunye nomxholo we-N-hayi nje "ukudibana ne-ASTM." Ngenxa yokuba ibhetshi eqinisekisiweyo kwi-F316L isenokusilela ukuba i-nitrogen yi-0.03% endaweni ye-0.06%.
Ukusuka kwi-Cast ukuya kwi-Function: Kutheni uHlanganiso oluthe nkqo lubalulekile
Ukuphosa intsimbi engatyiwanga akugqitywanga xa inxalenye iphola. Umphezulu we-As-cast uqulethe i-micro-porosity, uxinzelelo olushiyekileyo, kunye nesikali se-oxide-akukho nanye eyamkelekileyo ukutywinwa okuguquguqukayo okanye ujongano olujikelezayo. Kulapho ukudibanisa ngokuthe nkqo kuba sigqibo.
Kwiziko lethu le-Qingdao, zonke izinto zokugalelwa zentsimbi ezingenasici ziyenzeka:
- Unyango lobushushu-isisombululo se-annealing kwi-1040-1120 ° C elandelwa kukucima kwamanzi, kuqinisekiswe ngemephu ye-thermocouple;
- Umatshini-kumaziko e-CNC e-5-axis abambe indawo yokwenene ngaphakathi kwe-0.01 mm kwi-Ø12 mm bores;
- Ukuphuculwa komphezulu-i-electropolishing yokunciphisa i-Ra kunye nokuhlaziywa kwakhona kwe-passive, okanye ukudubula ukukrola ukuxinzelela uxinzelelo kwiindawo ezidinwayo.
Imoto yobunjineli yaseJamani iOEM yayidinga izindlu zepiston pump cylinder kunye nokugxila <0.015 mm phakathi kobuso kunye nokunyuka kobuso. Ukugalelwa kwesanti kukodwa akukwazanga ukuyihambisa. Inkqubo yethu ye-hybrid-utyalo-mali olukhupha ubume oburhabaxa, emva koko ukugqiba-ukudika kunye nokuhombisa kwiseti enye-unqumle i-scrap nge-62% kunye nokwandisa ubomi benkonzo ukusuka kwi-8,000 ukuya kwii-14,500 iiyure zokusebenza.
Xa ufuna ukugalela intsimbi engatyiwayo esebenzayo-hayi nje kudlula ukuhlolwa-ufuna amaqabane abaye debugged imifuziselo yokuqinisa AMS 5387 ingxubevange cobalt, iiprofayili eziqinisekisiweyo thermal for T800-based casings impompo, kwaye umkhondo 100% ubushushu impahla ekrwada emva EAF melt eziko. QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD. yakha loo mandla kuwo onke amacandelo-kungekhona njengebango, kodwa njengolandelelwano olubhaliweyo, olunokuphicothwa. Ukuchaneka ayongezwa ekugqibeleni. Yenziwe kwingqolowa yokuqala.
