Ukugalelwa kwentsimbi engatyiwayo kunikezela ukuxhathisa okungenakuthelekiswa nanto, amandla obushushu obuphezulu, kunye nozinzo lwe-dimensional-xa yenziwe ngokufanelekileyo. Kodwa iinjineli ezininzi zifumanisa kade ukuba ayizizo zonke iintsimbi ezisebenza ngokulinganayo phantsi koxinzelelo, ukunxitywa, okanye imithwalo eshushu yebhayisekile. Siye sabona izindlu zevalve ye-hydraulic ziqhekeka kwi-bar ye-280 emva kwemijikelo ye-12,000-kungekhona kwiimpazamo zoyilo, kodwa ukusuka kwisithuba esingahambelaniyo se-dendritic kwi-microstructure as-cast. Abanye bayasokola ngengqibelelo yomphezulu owenziwe ngoomatshini kwimizimba yesilinda yepompo ye-AISI 316, apho uxinzelelo olushiyekileyo olusuka ekupholiseni okungalinganiyo lubangela ukugqwetheka ngexesha lokusila kokugqibela. Ezi ayingomngcipheko wethiyori. Zizintsilelo eziphindaphindiweyo ezisekelwe kwizithuba zolawulo lwenkqubo: ukwahlukaniswa kwe-alloy, ukuguquguquka kokufuma kwesikhunta, okanye unyango olungonelanga lobushushu emva kokuphoswa.
Kutheni le nto ukulahlwa kwentsimbi engenastainless kufuna ngaphezulu kokunyibilika nokugalela nje
Insimbi engenasici ayiyonto enye-yintsapho ethatha i-austenitic (304, 316), i-duplex (2205, 2507), i-martensitic (410, 420), kunye ne-precipitation-hardening grade (17-4PH). Ngamnye uziphatha ngendlela eyahlukileyo ngexesha lokuqiniswa. Iintsimbi zeAustenitic zondla kakuhle kodwa zicutheka kancinci; Amabanga aphindwe kabini aqina kwizigaba ezibini, efuna amazinga okupholisa achanekileyo ukunqanda i-sigma phase embrittlement. Ukuphambuka kwe-0.3% kwi-chromium okanye umxholo we-nickel kunokutshintsha ibhalansi ye-ferrite-austenite-kunye nokunciphisa i-weldability okanye ukuchasana kwe-pitting kwiindawo ze-chloride.
Uhlalutyo lwehlabathi lokusilela lubonisa izizathu ezintathu eziphindaphindiweyo: Okokuqala, ukuchithwa okungonelanga kukhokelela kwi-microporosity phantsi kweendawo ezinomatshini-ingakumbi yingxaki kwimizimba yevalve enezindonga ezinqabileyo apho uxinzelelo oluqhumayo kufuneka ludlule i-400 bar. Okwesibini, ukubola kwesanti yokubumba isibophelelo kudala i-carbon pickup kwisikhumba sokuphosa, kwehlisa ukunyanzeliswa kwe-corrosion yasekhaya kwizinto ezingama-316 ezivezwe kwirhasi emuncu. Okwesithathu, isithuba esingahambelaniyo phakathi kwe-dendritic sonyusa ukuba sesichengeni sokukrazuka okushushu ngexesha lokuqina, ngakumbi kwiijometri ezintsonkothileyo ezifana nezindlu zepiston pump cylinder ezinetshaneli zokupholisa ezidibeneyo.
Siqinisekisa ibhetshi nganye sisebenzisa uhlalutyo lwe-spectrographic ngaphambi kokugalelwa kunye necandelo le-metallographic post-cast. Kwiindawo ezibalulekileyo-njenge-AMS 5387 cobalt-alloy pump housings-silandelela i-dendrite arm spacing (DAS) nge-SEM imaging. I-DAS engaphantsi kwe-35 µm ihambelana ngokuthe ngqo kunye nokudinwa kokwandiswa kobomi ngaphaya kwemijikelo ye-10⁷. Elo nqanaba lolawulo likwahlula ukuphoswa okusebenzayo kwimishini ebaluleke kakhulu.
Ukusuka kuMgangatho weFoundry ukuya kwiNtsebenzo eSebenzayo: Amanyathelo eNkqubo engaxoxisiyo
Uninzi lweenkcukacha lumisa ekubunjweni kweekhemikhali kunye namandla okuqina. Kodwa ukusebenza kuxhomekeke kwinto eyenzekayo phakathi kwezo ndawo zokutshekisha. Nantsi into esiyinyanzelisayo kuyo yonke iodolo yokuphosa yentsimbi engatyiwayo:
- Ukulandeleka kwezinto ezikrwada: Ukufudumala okuqinisekisiweyo kuphela-akukho nkunkuma edibeneyo. Iqashiso ngalinye liphethe iingxelo ezipheleleyo zovavanyo lokusila ezinobukhulu obuziinkozo, umlinganiselo wokubandakanywa (ASTM E45), kunye nomlinganiselo we-delta-ferrite.
- Ulawulo oluchanekileyo lokungunda: Iimbumba zesanti zigcinwe kwi-≤2.5% umswakama; Ubukhulu beqokobhe lotyalo-mali buqinisekiswe nge-eddy-current gauging phambi kokuba idewaxing.
- Ukuqina komkhombandlela: Ukuqhelaniswa nokungunda kunye nokubekwa kwesikhuphusi okulungiselelwe kusetyenziswa ukulinganisa kwe-MAGMASOFT® ukuphelisa ukucutha okuphakathi kumacandelo ashinyeneyo.
- Ulawulo lwe-thermal emva kokuphosa: Isisombululo se-annealing esibanjwe ngaphakathi kwe-±5 °C yobushushu obukhethekileyo, kunye nexesha lokufunxa elibalwe ngokwecandelo ngalinye lobunzima-kungekhona inxalenye yobunzima.
- Uzinziso lweDimensional: Ukunciphisa uxinzelelo phambi komatshini olukhuni, kulandelwa kukuqinisekiswa kwe-CMM kwi-20 ° C kwindawo enembuyekezo ye-thermal evuliwe.
Ukutsiba naliphi na inyathelo kuyingozi kwiziphumo ezisezantsi. Omnye umthengi unciphise ukungaphumeleli kwentsimi kwisiseko sempompo engaselunxwemeni nge-92% emva kokuba songeze isisombululo esisinyanzelo se-annealing-nangona i-spec yabo yasekuqaleni iye yasishiya. Umehluko? Amanqanaba oxinzelelo okushiyekileyo ehla ukusuka kwi-210 MPa ukuya ngaphantsi kwe-35 MPa.
Xa iCast idibana noMatshini: Kutheni ukudityaniswa okuthe nkqo kutshintsha yonke into
Iintsimbi zentsimbi azifane zithunyelwe zisuka kumgangatho wokushukuma. Uninzi lufuna iimpawu zokunyamezelana okuqinileyo: iibhori zezitulo zevalvu ezino-≤0.015 mm cylindricity, ubuso obuneflange obuneRa ≤0.8 µm, okanye ukugxila phakathi kweejenali ezithwele kunye neendawo ezinyukayo. Ukufezekisa oku kufuna ulungelelwaniso akukho mthengisi wangaphandle unokuqinisekisa.
Sisebenza ngomatshini yonke intsimbi engenastainless ephosa ngaphakathi endlwini sisebenzisa amaziko e-CNC angama-5 axhotyiswe ngezixhobo eziphilileyo kunye nokuhlolwa kwenkqubo. Imilinganiselo ebalulekileyo iqinisekisiwe phakathi kwenkqubo-kungekhona nje ukuhlolwa kokugqibela. Umzekelo, izindlu zepiston pump cylinder zigqitywe ngexa zisalungisiwe kwiseto efanayo esetyenziselwa ukugaya ubuso. Oko kuphelisa iimpazamo zokulungisa kwakhona kwaye kubambe ukugxila phakathi kwe-cylinder bore kunye ne-flange ekhulayo kwi-0.02 mm-iqinile kune-ISO IT6.
Olu hlanganiso lukwavumela amacebo okuvelisa axutyiweyo. Kwi-T800 cobalt-based winch center shaft rollers, siphosa iimilo ezikufutshane-netha kunye ne-2.5 mm yesibonelelo somatshini, emva koko sisebenzise ukujika okunzima endaweni yokugaya. Isiphumo: ingqibelelo yomphezulu iphucula (akukho kugaya ukutshisa), ixesha lokujikeleza lilahla i-40%, kunye ne-residual compressive stress inyuka nge-120 MPa-ngokwandisa ngokuthe ngqo ubomi benkonzo kwiindawo ezinqabileyo zaselwandle.
Ukukhetha iqabane elilungileyo kuthetha ukubuza imibuzo echanekileyo
Buza umthengisi wakho: Ngaba ngabanini bokwenza izinto kunye noomatshini? Ngaba banokubonelela ngokulandeleka ngokupheleleyo kwemathiriyeli ukuya kwinani lobushushu? Ngaba balinganisa ukuqina ngaphambi kokugalela kuqala-okanye bathembele kwiipateni zembali? Ukuba impendulo ngu "hayi" kuyo nayiphi na, ukhupha ulawulo lwenkqubo.
Kwi-QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD., Ukufakwa kwensimbi engenasici akusiyo inkonzo yokuzimela-yinto enye kwinkqubo evaliweyo edibanisa i-metallurgy, isayensi yokuqinisa, ukuchaneka kwe-machining, kunye nokuqinisekiswa okusebenzayo. Sihambise ngaphezu kwe-14,000 yentsimbi engatyiwayo kunye ne-alloy castings kubathengi kulo lonke elaseMntla Melika, iYurophu, kunye ne-Asia-mpuma ye-Asia-nganye iphethe iirekhodi zokuhlola ezipheleleyo, ukulandelwa kobushushu, kunye neengxelo ezihambelana ne-GD&T-ehambelanayo. Ugxininiso lwethu luhlala luncinci: amacandelo amashishini amele aphile-iivalve zoxinzelelo, izindlu zempompo, i-shafts yemoto yobunjineli-apho ukusilela akuyiyo inketho.
Isizukulwana esilandelayo sokuphosa intsimbi engatyiwayo asiyi kuvela kwiziko elikhulu okanye ukugalelwa ngokukhawuleza. Iza kuvela ekudityanisweni okuqinileyo phakathi kwesiseko kunye nevenkile yomatshini, ukuqonda okunzulu kwe-microstructure-amakhonkco okusebenza, kunye nokuzinikela okungagungqiyo kulawulo lwenkqubo ebhaliweyo. Kulapho ukuthembeka kwangempela kuqala khona.
