Thaum koj hnov 'cobalt-raws li alloy,' lub koom haum tam sim yog qhov chaw huab cua - dav hlau cav hniav, turbine ntsaws ruaj ruaj, siab kub li qub. Qhov ntawd tsis yog qhov yuam kev, tab sis nws yog qhov txwv tsis pub pom. Hauv kuv lub xyoo cuam tshuam nrog cov ntaub ntawv no rau cov khoom lag luam, Kuv tau pom qhov kho ntawm qhov ntsuas kub ua rau qee qhov kev xaiv tsis zoo. Qhov kev sib tw tiag tiag tsis yog tias lawv tuaj yeem ua kom sov; nws yog ua rau lawv ua hauj lwm ntseeg siab nyob rau hauv ib tug system nrog rau lwm yam, tsis tshua muaj kab txawv cov ntaub ntawv, soj ntsuam nrog thermal cycling, galling, thiab tus nqi sheer kom tau lub geometry txoj cai. Nws yog ib yam khoom uas rau txim rau kev xav.
Lub Alloy tsis yog qhov pib taw tes; Qhov Failure yog
Koj tsis yog txiav txim siab siv cov cobalt-based alloy. Feem ntau koj raug yuam rau hauv nws. Ib qho kev nkag tau yooj yim yog qhov rov ua tsis tiav hauv a mechanical ib feem ua los ntawm ib tug hardened steel los yog ib tug nickel alloy. Kuv nco qab tus neeg siv khoom nrog cov kab txuas txuas ntxiv-lawv cov ntawv qhia yob, ua los ntawm cov cuab yeej qib siab, tau hnav tawm hauv lub lis piam. Qhov teeb meem tsis yog kev puas tsuaj xwb; Nws yog kev sib xyaw ua ke ntawm cov cua kub nruab nrab (kwv yees li 600-700 ° C), oxidation, thiab cyclic stress ua rau micro-cracking. Hloov mus rau cov generic cobalt alloy los ntawm phau ntawv teev npe tsis daws nws. Thawj tus qauv, siv Co-6 (Stellite 6), pom kev hnav zoo dua tab sis tawg nyob rau hauv thermal shock. Peb yuav tsum tau nqis rov qab.
Zaj lus qhia yog tias cobalt-based yog ib tsev neeg loj heev. Rau qhov yob, peb xav tau qhov sib npaug. Peb tau tsiv mus rau cov hlau uas muaj cov pa roj carbon ntau dua thiab cov ntsiab lus tungsten rau kev puas tsuaj, tab sis kuj muaj qhov sib tw chromium thiab molybdenum piv rau lub neej zoo thermal qaug zog. Nws yog qhov kev ntsuas ntsuas no uas txhais tau txoj haujlwm. Cov ntawv teev lus muab cov khoom hauv paus rau koj, tab sis kev sib cuam tshuam hauv kev pabcuam yog qhov tseem ceeb. Koj tsis yog yuav khoom xwb; koj yog engineering lub qhov rais ua haujlwm.
Qhov no yog qhov uas cov neeg koom tes hauv lub sijhawm ntev los ua qhov tseem ceeb. Lub khw uas tsuas yog nchuav hlau yuav tsis txiav nws. Koj xav tau ib qho uas nkag siab txog tus cwj pwm ua kom muaj zog ntawm cov hlau no - lawv yuav ua li cas rau kub kua muag, lawv rhiab npaum li cas rau qhov kub thiab txias. Kuv tau ua haujlwm nrog Qingdao Qiangsenyuan Technology (QSY) ntawm ntau qhov qauv. Lawv peb caug xyoo nyob rau hauv plhaub thiab peev casting, tshwj xeeb tshaj yog cov npe cobalt-based alloys Raws li ib qho tshwj xeeb, txhais tau tias lawv paub siv cov pwm ua ntej cua sov thiab tswj cov cua txias rau cov twj tso kua mis lub nplhaib uas peb tsim. Qhov ntawd yuav tau tawg nyob rau hauv ib lub kaum os qhov chaw nrog lub khw tsis tshua muaj kev paub.
Machining: Qhov twg tus nqi tiag tiag thiab mob taub hau nkaum
Txhua tus neeg txhawj xeeb txog tus nqi raw khoom ib kilo. Qhov kev txhawj xeeb ntse dua yog hais txog tus nqi ib daim ntawv tiav. Machining cobalt alloys yog cov tsiaj nyaum sib txawv. Lawv ua hauj lwm hnyav sai. Ib qho cuab yeej npub me ntsis lossis tus nqi noj khoom hnyav tsis yog hnav lub cuab yeej xwb; nws tsim cov tawv nqaij tawv rau ntawm qhov chaw ua haujlwm uas ua rau lub sijhawm dhau los yuav luag tsis yooj yim sua, feem ntau ua rau qhov tawg.
Peb kawm qhov no txoj kev nyuaj ntawm ib pawg ntawm lub rooj zaum valve. Qhov kev pab cuam CNC uas ua haujlwm zoo nkauj ntawm 316 stainless yog kev puas tsuaj. Nws ua rau chattered nto, tawg inserts, thiab qhov ntev ntawm spec. Cov tshuaj tsis yog qeeb qeeb qeeb thiab pub. Nws yog ib qho cuab yeej ua tiav: cov tuav cov cuab yeej nruj, cov qib carbide tshwj xeeb nrog cov npoo ntse thiab cov rakes zoo, thiab cov cua txias siab ua kom pom tseeb ntawm ntug txiav kom tswj cov cua sov thiab tshem tawm cov chips. Nws yog ib qho kev siv nyiaj ntau dua.
Qhov no yog lwm qhov chaw uas muaj peev xwm ua haujlwm puv ntoob ntawm cov chaw tsim khoom tseem ceeb. Lub tuam txhab zoo li QSY, uas ua haujlwm ob qho tib si casting thiab cov CNC machining hauv tsev, muaj txiaj ntsig zoo. Lawv tuaj yeem tsim cov txheej txheem casting nrog machining nyob rau hauv lub siab-ntxiv cov tswv yim npaj nyiaj pub dawb, xav txog cov ntsiab lus fixturing-yog li ib feem ntawm kev hloov pauv los ntawm cov khoom siv raw mus rau cov khoom tiav nrog tsawg dua handoffs thiab tsawg dua kev pheej hmoo. Rau peb, qhov kev sib koom ua ke no tau txiav lub sijhawm ua haujlwm ntawm lub turbine vane pawg los ntawm yuav luag 30% vim tias cov tshuab tshuab thiab cov neeg tsim khoom tau daws teeb meem ua ke txij hnub ib.
Qhov zoo txaus ntxiab thiab khoom hloov pauv
Muaj lub siab tsis tu ncua los hloov. Peb puas tuaj yeem siv cov npib tsib xee pheej yig dua lossis cov txheej txheej saum npoo? Qee zaum, yog. Tab sis feem ntau, nws yog kev lag luam cuav. Kuv tau koom nrog hauv ib qhov project rau lub twj tso kua mis tshuaj uas cov spec hu ua Co-28Cr-6Mo alloy rau nws cov kev sib xyaw corrosion thiab cavitation tsis kam. Ib tus neeg muag khoom tau thov ib qho nickel-tooj liab alloy nrog welded overlay ntawm cobalt alloy. Nws yog pheej yig dua ua ntej.
Nws ua tsis tiav nyob rau hauv qis dua rau lub hlis. Lub overlay delaminated. Zaj lus qhia yog hais tias rau dynamic, load-bearing mechanical qhov chaw Raws li erosive thiab corrosive media, homogenous khoom ntawm cov khoom cobalt yog irreplaceable. Lub substrate thiab txheej yuav yeej ib txwm muaj ib tug ciam teb uas yuav ua tau ib tug tsis ua hauj lwm pib taw tes. Koj hloov ntawm koj tus kheej txaus ntshai, thiab nws feem ntau yuav tsum muaj kev sim ntsuas tag nrho los ua pov thawj nws, uas raug nqi ntau dua li ua nws yog thawj zaug.
Qhov no yog ib feem tseem ceeb ntawm cov lus pom zoo rau cov kws tshaj lij. Thaum koj koom nrog lub foundry uas teev cov alloys tshwj xeeb raws li qhov tseem ceeb muaj peev xwm, zoo li koj pom ntawm QSY's website, koj tsis yog nkag mus rau lawv lub qhov cub xwb. Koj tau nkag mus rau peb lub xyoos ntawm kev txiav txim siab ntau ntxiv thaum twg cov ntaub ntawv no tsim nyog thiab thaum twg lawv yuav dhau mus. Qhov kev sab laj no tau ci rau hauv tus txheej txheem.
Case nyob rau hauv Point: Ib qho kev vam meej thiab ib lo lus nug lingering
Qhov kev vam meej meej yog ib txheej hnav daim hlau rau kub shear nyob rau hauv ib lub zeb zeb. Ib puag ncig yog kev lim hiam: kev sib cuag nrog 900 ° C hlau, dej txau txias, thiab hnav hnyav heev. Peb siv cobalt alloy nrog siab carbide ntim. Cov txheej txheem casting los ntawm lub plhaub molding ntawm QSY yog qhov tseem ceeb - nws tau muab peb qhov kev ruaj ntseg thiab qhov chaw tiav rau ib feem uas yog cov duab loj loj, txo qis machining kim ntawm cov tawv tawv. Cov seem outlasted cov kev daws yav dhau los los ntawm ib qho ntawm tsib. Qhov ntawd yog qhov yeej koj caum.
Tab sis tsis yog txhua zaj dab neeg no huv si. Tsis ntev los no peb tau sim ib qho tshiab, muaj peev xwm cobalt alloy rau cov cuab yeej downhole. Nws tau cog lus zoo heev hnav tsis kam. Nyob rau hauv lub lab, nws yog stellar. Nyob rau hauv lub tshav pob, nws shattered rau thawj high-kev cuam tshuam load. Tom qab-mortem pom qhov teeb meem nrog intergranular brittleness uas tsis pom meej hauv cov qauv ASTM. Nws teeb qhov project rov qab lub hlis. Nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov tias nrog cov ntaub ntawv qib siab no, tsis muaj qhov hloov pauv rau lub ntiaj teb tiag tiag, daim ntawv thov tshwj xeeb rau kev lees paub. Cov ntaub ntawv science tsuas yog ib nrab ntawm zaj dab neeg.
Saib Tom ntej: Additive thiab Yav Tom Ntej Geometry
Txhua tus neeg tham txog kev tsim khoom ntxiv rau cov hlau no. Nws tuav cov lus cog tseg rau qhov tsis yooj yim geometries - sab hauv cua txias channel, lattice qauv. Tab sis tam sim no, rau feem ntau cov ntim siab, siab-kev ntseeg siab cobalt-raws li alloy qhov chaw, casting tseem yog huab tais. Kev ncaj ncees metallurgical thiab isotropic cov khoom ntawm ib qho zoo-cam khwb cia yog ib qho nyuaj rau tuav nrog txheej txheej txheej txheej txheem uas tuaj yeem ua kom paub cov yam ntxwv tshiab.
Hais tias, peb tab tom saib nws ze. Lub peev xwm los luam tawm qhov ze-net-zoo li preform ntawm ib tug complex roj nozzle thiab ces ua kom tiav nrog precision CNC machining yuav yog ib tug game-changer. Nws yuav txo cov khoom pov tseg ntau heev. Cov tuam txhab uas twb tau paub ob qho tib si casting thiab machining, zoo li pab neeg ntawm Qingdao Qiangsenyuan Technology Co., Ltd., yog qhov chaw zoo los koom ua ke cov thev naus laus zis no thaum lawv paub tab rau cov khoom tseem ceeb. Lawv qhov kev paub nrog cov khoom siv tus cwj pwm hauv ob lub xeev cov kua thiab cov khoom yog cov kev paub hauv paus uas koj xav tau los mus saib cov txheej txheem tshiab.
Yog li ntawd, qhov twg yuav tso peb? Cobalt alloys tsis yog cov mos txwv khawv koob. Lawv yog cov cuab yeej tshwj xeeb heev. Tus yuam sij rau kev siv lawv zoo yog pib nrog hom tsis ua haujlwm, hwm qhov tsis sib xws ntawm lawv cov khoom siv thiab tshuab, thiab koom tes nrog cov neeg tsim khoom uas muaj qhov caws pliav los ua pov thawj lawv paub tias lawv ua dab tsi. Lub hom phiaj tsis yog tsuas yog ua ib feem ntawm cov khoom zoo nkauj; nws yog los ua ib qho kev tivthaiv uas ploj mus rau hauv kev ntseeg siab, tsis muaj kev cuam tshuam. Qhov ntawd yog qhov kev ntsuas tiag tiag ntawm kev vam meej.
