Thaum ib tus neeg pov tawm qhov kev thov rau AMS 5387 cov khoom siv, kuv thawj qhov kev xav tsis yog rub ib daim ntawv tshwj xeeb xwb. Nws yog xav paub seb lawv puas nkag siab qhov lawv thov. Cov spec no suav nrog cobalt-chromium-nickel alloy, feem ntau hu ua Stellite 6 lossis qib zoo sib xws, tsim los rau kev hnav hnyav thiab kev pabcuam kub. Lub pitfall? Cov neeg yuav khoom feem ntau conflate nws nrog generic stellite los yog xav tias tej foundry tuaj yeem nplawm nws. Qhov tseeb yog qhov ntawd TIAB SA 5387 tsis yog hais txog chemistry xwb; nws yog hais txog tag nrho cov kev taug kev los ntawm yaj mus rau qhov kawg machined dimension, nrog rau kev kho cua sov thiab kev ncaj ncees xyuas uas yuav ua tau los yog tawg ib feem meant rau, hais tias, ib tug turbine cav foob los yog ib tug hnyav-lub luag hauj lwm valve lub rooj. Kuv tau pom ntau qhov haujlwm kaw vim tias qhov kev tsom mus rau tsuas yog cov ntaub ntawv pov thawj, tsis yog cov txheej txheem muaj peev xwm tom qab nws.
Qhov Kev Sib Tw Core: Nws yog ntau tshaj li ib qho Alloy
Ua haujlwm nrog TIAB SA 5387 tsis zoo li machining me steel. Cov ntsiab lus siab cobalt thiab chromium muab nws zoo kawg nkaus hnav tsis kam, tab sis tib lub cuab yeej hloov cov cuab yeej txiav rau hauv cov khoom siv. Koj tsis tuaj yeem muab pov rau ntawm lub tshuab CNC xwb. Cov txheej txheem xav tau kev teeb tsa nruj, cov cuab yeej tshwj xeeb geometries (peb lean hnyav rau ntawm ceramic lossis CBN inserts rau kev ua tiav), thiab txhob txwm tshaj tawm txoj hauv kev kom nrawm thiab txau. Txawm tias cov txheej txheem casting tseem ceeb heev. Txhawm rau kom tsis txhob muaj teeb meem xws li micro-porosity lossis carbide sib cais, qhov ntsuas kub thiab pwm ua ntej kub yuav tsum tau tswj nruj. Ib lub tuam txhab zoo li Qingdao Qiangsenyuan Technology Co., Ltd. (QSY), nrog lawv peb lub xyoo caum nyob rau hauv lub plhaub thiab peev casting rau tshwj xeeb alloys, muaj lub cub tawg cav thiab cov txheej txheem ntawv los ua pov thawj lawv twb dialed qhov no nyob rau hauv. Nws yog lub koom haum nco uas tseem ceeb.
Qhov twg cov khoom tau nthuav yog tom qab casting. Cov spec feem ntau hu rau kev kho cua sov. Qhov no tsis yog ib qho yooj yim annealing voj voog. Lub qhov rais kub yog nqaim, thiab qhov cua txias - feem ntau yog huab cua ceev lossis yuam cua txias - yog qhov tseem ceeb kom ua tiav qhov xav tau microstructure. Kuv nco qab txog ib pawg ntawm cov khoom siv valve ob peb xyoos rov qab qhov twg cov khoom siv hluav taws xob hnyav dhau, ua rau tsis sib xws. Cov khoom tau dhau los kuaj xyuas qhov nyuaj tab sis ua tsis tau zoo hauv qhov kev ntsuas kub kub tom ntej, deforming nyob rau hauv simulated kev pabcuam. Lub hauv paus ua rau? Cov txheej txheem kho cua sov tsis tau kho raws li kev ua haujlwm tseem ceeb.
Qhov no ua rau lub ntsiab lus tseem ceeb txog kev yuav khoom. Koj tsis yog yuav xwb AMS 5387 cov khoom siv; koj koom tes nrog tus neeg muag khoom uas tswj cov txheej txheem ntsug. QSY tus qauv, sib txuas lawv tus kheej casting nrog hauv tsev CNC machining, yog qhov zoo dua. Nws tshem tawm cov ntiv tes taw thaum pom qhov tsis haum. Puas yog qhov tsis xws luag raug nthuav tawm los ntawm machining, lossis kev ntxhov siab ntawm machining uas ua rau tawg? Thaum ib pab neeg ua haujlwm ob qho tib si, cov lus tawm tswv yim yog tam sim ntawd. Rau qhov kev ncaj ncees siab, qhov traceability muaj nqis ntau dua li tus nqi me ntsis ntawm ib chav tsev txuag nyiaj los ntawm cov khoom sib cais.
Precision Machining: Qhov twg Theory ntsib lub Vise
Cia peb tham txog kev tau txais los ntawm qhov ntxhib casting mus rau ib qho tiav. Lub machinability ntsuam xyuas rau cov alloys yog, frankly, tsis zoo. Nws ua hauj lwm-hardens sai heev. Yog tias koj lub cuab yeej nyob los yog koj tus nqi pub mis yog qhov tsis zoo, koj tseem ceeb heev rau qhov chaw koj tab tom sim txiav, ua rau cov cuab yeej tawg. Lub tswv yim yog qhov siab ceev ceev, noj zoo ib yam, thiab tsis txhob cia lub cuab yeej rub. Kev cuam tshuam kev txiav, zoo li ntawm lub rooj zaum valve nrog qhov sib tsoo, yog ib qho kev npau suav phem. Peb feem ntau siv trochoidal milling txoj hauv kev los tswj cov cuab yeej koom nrog.
Fixture tsim yog lwm tus hero unsung. Vim tias cov khoom siv tawv heev, txiav quab yuam yog siab. Lub flimsy fixture yuav tso cai rau kev co, tua cov cuab yeej lub neej thiab ruining nto tiav. Peb tau tsiv mus rau nplooj siab, hardened steel fixtures nrog hydraulic clamping rau kev tsim khoom tseem ceeb ntawm TIAB SA 5387 cov khoom. Nws yog tus nqi peev, tab sis nws them rov qab rau hauv qhov sib xws thiab txo cov seem. Kuv nco qab tus qauv ua haujlwm uas peb tau sim txuag lub sijhawm los ntawm kev siv modular fixturing. Qhov tshwm sim yog +/- 0.001 inch kam rau ntawm lub bore uas peb tuav tsis tau - ib feem tau hloov pauv thaum txiav. Zaj kawm tau kawm nyuaj heev.
Kev txheeb xyuas qhov zoo ntawm no mus dhau ntawm CMM daim ntawv tshaj tawm. Rau qhov chaw uas ntsib qhov kub thiab txias, peb feem ntau qhia thiab ua metallographic cross-sectioning ntawm cov qauv daim coupon los ntawm tib lub tshav kub. Koj tab tom nrhiav kev faib cov carbide thiab tsis muaj cov theem tsis zoo. Qhov no yog qhov uas tus neeg muag khoom cog lus pom. Ib lub khw muag khoom xwb yuav balk ntawm qhov no. Ib tug khub zoo li QSY, embedded nyob rau hauv no niche, feem ntau muaj cov kev sib raug zoo nyob rau hauv lub lab thiab to taub qhov no yog ib feem ntawm xa ib tug haumxeeb tivthaiv, tsis yog ib tug machined duab.
Kev nqis peev Casting Advantage rau Complex Geometry
Rau ntau AMS 5387 cov khoom siv, tshwj xeeb tshaj yog cov uas muaj intricate intricate passages los yog complex aerofoils, peev casting yog qhov pib taw tes xwb. Qhov ze-net-zoo muaj peev xwm txo qis tus nqi ntawm cov khoom kim heev, nyuaj-rau-lub tshuab koj xav tau tshem tawm. Txawm li cas los xij, cov txheej txheem siv quav ciab qhia txog nws tus kheej hloov pauv. Dimensional raug ntawm qhov kawg ntawm cov hlau yog ncaj qha mus rau qhov tseeb ntawm cov ntoo siv quav ciab thiab ceramic plhaub tus cwj pwm thaum dewaxing thiab sintering.
Plhaub mould casting, lwm yam ntawm QSY qhov tshwj xeeb, muaj qhov sib npaug sib txawv. Nws yog feem ntau pheej yig dua rau me ntsis cov duab tsis yooj yim thiab tuaj yeem ua tiav qhov zoo tshaj plaws thiab qhov seem stability. Qhov kev xaiv ntawm ob txoj kev tsis yog arbitrary. Nws los mus rau ib feem geometry, yuav tsum tau nto tiav, ntau loj, thiab thaum kawg, tus nqi. Rau ib qho yooj yim bushing, plhaub pwm yuav zoo meej. Rau cov roj nozzle nrog cov lattices sab hauv, peev casting yog tsis-negotiable. Qhov tseem ceeb yog muaj tus neeg muag khoom uas tuaj yeem qhia qhov tseeb ntawm txoj kev zoo tshaj plaws, tsis yog qhov lawv muaj.
Qhov tiag-lub ntiaj teb hiccup peb tau ntsib kev cuam tshuam tseem ceeb hauv kev nqis peev-cam khwb cia turbine foob. Qhov seem ntsia zoo kawg nkaus sab nraud, tab sis kev tshuaj xyuas ultrasonic tau qhia ib ntu nyias qhov twg tuab yog tsim. Lub hauv paus tau ntab me ntsis thaum lub sij hawm ncuav. Kev kho tsis yog tsuas yog remelting; nws koom nrog redesigning cov tub ntxhais anchors thiab kho lub rooj vag system kom ntseeg tau ntau yam hlau ntws. Qhov no yog hom kev daws teeb meem uas tshwm sim tawm ntawm daim ntawv spec tab sis txhais cov phiaj xwm ua tiav.
Material Sourcing thiab Traceability: Daim Ntawv Trail
TIAB SA 5387 pib nrog txoj cai master alloy ingots. Reputable mills muab cov ntaub ntawv pov thawj, tab sis cov saw ntawm kev saib xyuas tseem ceeb. Rau aerospace los yog lub zog tsim daim ntawv thov, koj feem ntau xav tau tag nrho traceability rov qab mus rau yaj. Qhov no txhais tau hais tias koj tus neeg muag khoom yuav tsum muaj kev txheeb xyuas cov ntaub ntawv thiab kev cais tawm. Peb tau tshawb xyuas cov khw muag khoom uas 321 stainless thiab cobalt alloy chips nyob rau hauv cov khoom nyob ib sab - ib qho kev tsis tsim nyog rau kev ua haujlwm tseem ceeb.
Lub pob ntawv pov thawj yog qhov kawg xa tuaj. Nws yuav tsum tsis yog tsuas yog cov tshuaj ntsuam xyuas thiab cov khoom siv kho tshuab los ntawm cov ntawv pov thawj, tab sis kuj tseem muaj cov ntaub ntawv kho cua sov (nrog rau cov kab hluav taws xob hluav taws xob), cov ntawv ceeb toom tsis muaj kev puas tsuaj (xws li dye penetrant lossis radiographic), thiab cov ntaub ntawv tshuaj xyuas thawj zaug. Kuv saib lub teeb daim ntawv pov thawj pob nrog kev ua xyem xyav. Ib qho muaj zog, zoo li qhov peb tau txais tsis tu ncua los ntawm cov neeg koom tes nrog cov txheej txheem sib koom ua ke, qhia zaj dab neeg ntawm kev tswj hwm ntawm txhua kauj ruam.
Nws tsim nyog sau cia thaum ntawd TIAB SA 5387 yog ib qho kev hu-tawm, sib npaug cov qib muaj tswv zoo li Stellite 6, Deloro 6, lossis Tribaloy T-800 muaj nyob. Qee zaum, ib feem tsim los rau AMS 5387 tuaj yeem tsim los ntawm qhov sib npaug nrog kev pom zoo me me, uas tuaj yeem muab qhov muaj txiaj ntsig zoo dua lossis kev ua tau zoo me ntsis tweak. Qhov no yog kev sib tham kom muaj nrog koj pab neeg ua haujlwm engineering thiab tus neeg muag khoom paub. Qhov muag tsis pom kev hloov pauv yog qhov kev txhaum loj, tab sis paub txog cov khoom siv engineering yog ib feem ntawm tus nqi ntxiv.
Xaus Kev Xav: Txoj Kev Pragmatic
Yog li, dab tsi yog qhov takeaway thaum koj xav tau cov khoom ua los ntawm AMS 5387 cov khoom siv? Saib dhau ntawm chemistry. Ntsuam xyuas tus neeg muag khoom tag nrho cov txheej txheem tswj-los ntawm lawv cov khoom siv hlau thiab kev ua haujlwm melting, los ntawm lawv cov casting thiab kev kho cua sov, thiab thaum kawg, lawv cov tswv yim machining thiab metrology. Cov khw muag khoom uas ua tiav lub sijhawm ntev hauv qhov chaw no, zoo li QSY, yog cov uas hwm cov khoom sib tw thiab tau tsim lawv lub tshuab nyob ib puag ncig lawv, tsis yog ntxiv rau hauv cov npe khoom.
Nws kuj yog hais txog kev tswj cov kev cia siab. Cov khoom no yuav tsis pheej yig lossis ceev npaum li cov pa roj carbon steel. Tus nqi yog nyob rau hauv lawv cov kev ua tau zoo nyob rau hauv lub feem ntau xav tau ib puag ncig. Lub foob tsis tiav hauv lub twj tso kua mis kub tuaj yeem ua rau cov hnub poob qis, raug nqi ntau dua li tus nqi them rau cov khoom tsim tau zoo. Tus nqi tiag tiag yog tus nqi tag nrho ntawm kev ua tswv cuab.
Thaum kawg, koom nrog thaum ntxov. Yog tias koj tab tom tsim ib feem koj xav tias xav tau TIAB SA 5387, tham nrog koj tus foundry thiab machinist thaum lub sij hawm tsim. Lawv tuaj yeem tawm tswv yim ntawm cov kaum sab xis, ntu hloov pauv, thiab kev ua siab ntev callouts uas tsim tau. Qhov kev sib koom tes no yog qhov sib txawv ntawm kev ua haujlwm du thiab kev tawm tsam ntev tiv thaiv physics thiab metallurgy. Nws hloov ib qho kev yuav khoom mus rau hauv kev sib koom ua ke uas muab cov khoom siv uas ua tau zoo.
