Thaum koj hnov 'Inconel 625 peev casting', qhov kev xav tam sim no feem ntau hais txog nws cov spec-corrosion resistance, siab zog, tag nrho cov khoom zoo. Tab sis zaj dab neeg tiag tiag pib thaum koj sim ua qhov nyuaj, nyias-walled tivthaiv nrog nws. Qhov sib txawv ntawm cov ntaub ntawv alloy thiab cov hauv pem teb foundry yog qhov uas feem ntau cov kev xav ua tsis tiav.
Alloy's Character thiab Wax Pattern Dilemma
Inconel 625 tsis yog lwm qhov nickel-base superalloy koj muab pov rau hauv cov txheej txheem. Nws cov ntsiab lus nickel thiab chromium siab, nrog rau qhov molybdenum thiab niobium boost, muab nws qhov kev ua tau zoo, tab sis kuj yog tus cwj pwm hauv pwm. Thawj qhov teeb meem tsis yog hlau; nws yog wax. Rau intricate aerospace los yog marine fittings, tus qauv yuav tsum zoo meej. Ib qho kev tsis haum me me tau nthuav dav tom qab lub plhaub tsev thiab cov cua kub hnyav. Kuv tau pom ntau qhov haujlwm uas qhov kev txhaj tshuaj thawj zaug tau maj nrawm, ua rau raug nqi rov ua dua tom qab. Qhov kev ruaj ntseg ntawm tus qauv siv quav ciab rau 625 yog qhov tseem ceeb tshaj qhov, hais tias, ib feem ntawm 316 stainless.
Ces los lub plhaub. Koj tsis tuaj yeem siv cov ceramic xwb. Lub thermal expansion mismatch ntawm tus qauv silica-based prime tsho tiv no thiab Inconel 625 thaum dewaxing thiab pre-heat tuaj yeem ua rau micro-cracking, lub launchpad zoo meej rau hlau nkag. Peb hloov mus rau fused silica los yog zircon-based thawj slurry system, uas suab yooj yim, tab sis hu rau hauv lub viscosity thiab ziab lub sij hawm rau peb cov av ntawm no yog ib lub hlis mus sim. Ib tug khub foundry, Qingdao Qiangsenyuan Technology Co., Ltd. (QSY), nrog lawv peb xyoo caum hauv peev casting thiab plhaub pwm ua haujlwm, echoed qhov no. Lawv tau taw qhia tias rau lawv cov nickel-based alloys portfolio, lub plhaub tsim rau 625 feem ntau xav tau ib qho tweak piv rau lawv cov cobalt-raws li khiav, tshwj xeeb tshaj yog rau cov khoom uas muaj kev hloov tam sim ntawd.
Nws yog cov kev hloov pauv hloov maj mam uas cais cov khoom siv tau los ntawm ib qho khoom seem. Cov theem ua ntej pov npav rau 625 xav tau kev hwm rau kev nthuav dav uas ciam teb rau obsessive. Koj tsis yog tsuas yog tsim pwm; koj nyob nraum engineering ib thermal thiab chemical interface.
Lub Pour: Qhov twg Theory ntsib tus Crucible
Melting thiab pouring Inconel 625 yog qhov twg cov roj hmab raws li txoj kev. Lub alloy txoj kev nyiam los tsim cov theem nrab yog tias qhov ntsuas kub thiab qhov txias txias tsis nyob rau hauv sync yog ib qho pitfall classic. Nws tsis yog hais txog kev ntaus ° C. Koj yuav tsum xav txog yuav ua li cas cov hlau ntws los ntawm cov ntu nyias ntawm lub plhaub ceramic. txias dhau lawm, thiab koj yuav raug misruns lossis txias kaw; kub heev, thiab koj ua rau cov tshuaj tiv thaiv nrog lub plhaub, uas yuav ua rau muaj kev ncaj ncees ntawm qhov chaw.
Peb kawm qhov no txoj kev nyuaj ntawm qhov project thaum ntxov rau lub nplhaib foob turbine. Lub geometry muaj ib pawg tuab ntawm cov cua txias me me. Thawj ob peb lub ncuav tau pom zoo pom zoo, tab sis kev kuaj hluav taws xob pom pom cov chaw sib cais ntawm qhov pib melting thiab micro-porosity ntawm cov channel junctions. Qhov teeb meem? Lub thermal huab hwm coj ntawm cov ceramic nyob ib ncig ntawm cov yam ntxwv zoo sib xws tau hloov kho cov khoom siv hauv zos hauv ib txoj kev uas peb cov qauv tsis suav nrog. Kev txhim kho tsis yog tsuas yog kho lub superheat, tab sis kuj rov tsim kho lub rooj vag system los txhawb kev taw qhia ntau ntxiv rau cov risers, lub hauv paus ntsiab lus tseem ceeb uas tau saib tsis pom hauv qhov kev tshawb nrhiav kom tau txais txiaj ntsig zoo tshaj plaws.
Degassing yog lwm yam uas ntsiag to. Hydrogen pickup tuaj yeem ua npau suav phem. Kev nruj degassing xyaum nyob rau hauv qhov cub induction yog tsis-negotiable. Kuv nco qab txog ib pawg uas cov khoom siv kho tshuab, tshwj xeeb tshaj yog cuam tshuam rau qhov toughness, yog inconsistently hauv qab spec. Tom qab txiav txim tawm chemistry, tus neeg ua txhaum tau dhau los ua qhov hloov pauv me me hauv cov khw huab cua cuam tshuam rau cov yaj. Nws yog ib qho kev ceeb toom me me tias nrog cov ntaub ntawv zoo li no, ib puag ncig nws tus kheej dhau los ua cov txheej txheem sib txawv.
Tom qab-Cast Reality: Kev kho cua sov thiab kev sib tsoo machining
As-cam khwb cia Inconel 625 muaj ib tug cored dendritic qauv uas yuav tsum tau homogenized. Cov txheej txheem tshuaj annealing nyob ib ncig ntawm 1150 ° C ua raws li qhov nrawm nrawm yog phau ntawv. Tab sis qhov 'ceev quench' yog qhov nyuaj rau qhov hnyav-section castings. Yog tias koj tsis tau txais qhov quench npaum li cas, koj tuaj yeem xaus nrog ntau dhau ntawm carbide nag lossis daus ntawm cov ciam teb, uas tom qab ntawd dhau los ua qhov pib rau corrosion lossis tawg hauv kev pabcuam. Nws yog qhov sib npaug ntawm kev ua tiav qhov yuav tsum tau tawg ntawm theem nrab thiab tsis txhob cuam tshuam los yog quench cracking.
Ces los CNC machining. Tus neeg twg uas xav tias machining cam khwb cia 625 zoo ib yam li machining bar Tshuag yog nyob rau hauv kev poob siab. Cov txheej txheej cam khwb cia, feem ntau nrog qhov sib txawv me ntsis thiab ua tau alpha-chromium precipitates, tuaj yeem ua rau muaj kev puas tsuaj nrog cov cuab yeej npoo. Peb tau txais kev saib xyuas, kev ua haujlwm siab txias txias nrog cov cuab yeej nruj, kho qhov pib roughing dhau yuav luag zoo li kev ua haujlwm sib cais. Tuam txhab uas muag uas integrate casting thiab machining, xws li QSY (Koj tuaj yeem pom lawv txoj hauv kev ntawm https://www.tsingtaocnc.com), muaj qhov zoo ntawm no. Lawv cov machinists paub txog qhov tshwj xeeb 'raws li-cam khwb cia' xwm txheej ntawm lawv tus kheej foundry's 625 tso zis, uas tso cai rau ntau optimized feeds thiab speeds los ntawm tau-mus, txo cov cuab yeej hnav thiab txhim kho qhov kawg nto tiav ntawm qhov tseem ceeb sealing ntsej muag.
Tus nqi ntawm cov khoom seem tom qab cov xuab moos ntawm machining yog ntau dua li ib qho scrapped tom qab casting. Cov theem tom qab pov npav no feem ntau txiav txim siab qhov kev ua tiav tag nrho.
Case Point: Ib Lub Tsev Valve thiab Kev Tsov Rog Dimensional
Ib qho piv txwv yog qhov loj, complex valve vaj tsev rau kev pab cuam offshore. Cov ntawv luam tawm hu rau ASME SB-366 Qib CW6MC (qhov sib npaug ntawm Inconel 625) nrog rau tag nrho NACE MR0175 ua raws li kev pabcuam qaub. Qhov kev sib tw tsis yog qhov kev kuaj corrosion; nws tau tuav lub 0.2 hli kam rau ntawm qhov loj, tsis xwm yeem sab hauv bore tom qab kev kho cua sov.
Lub casting thiab kub kho tau ua rau kwv yees tab sis tsis sib xws ntawm qhov sib txawv. Peb cov txheej txheem pib ntawm kev ntxiv cov khoom siv tshuab ua haujlwm tsis zoo. Peb yuav tsum siv 'thawj kab lus' txheej txheem: cam khwb cia, kho cua sov, ces 3D scan. Cov ntaub ntawv scan tau siv los tsim cov kev pab cuam CNC them nyiaj rau qhov kawg machining. Nws ntxiv ib kauj ruam, tab sis nws yog tib txoj kev los ntaus tus spec ntseeg tau. Cov txheej txheem hloov pauv zoo li no yog qhov tseem ceeb rau tus nqi siab Inconel 625 peev casting.
Nws kuj tseem qhia tias vim li cas kev sib koom tes sib raug zoo ntawm cov chaw tsim khoom thiab lub khw muag khoom yog qhov tseem ceeb. Thaum lawv nyob hauv ib lub ru tsev, lossis muaj kev sib koom tes nruj, cov lus tawm tswv yim luv luv. Cov teeb meem zoo li cov qauv kev ntxhov siab seem los ntawm kev casting uas tshwm sim thaum lub sij hawm machining tuaj yeem kuaj xyuas thiab hais txog ntawm tus txheej txheem tsim qauv rau kev khiav haujlwm tom ntej.
Saib Rov Qab thiab Mus Rau Tom Ntej
Yog li, dab tsi yog qhov takeaway? Ua tiav peev casting ntawm Inconel 625 yog qhov teeb meem engineering. Nws tsis yog txheej txheem khoom. Nws xav tau kev nkag siab tob, yuav luag nkag siab txog yuav ua li cas txhua kauj ruam - los ntawm kev siv quav ciab mus rau qhov kev tshuaj ntsuam zaum kawg - cuam tshuam rau lwm qhov. Lub alloy tsis zam txim rau shortcuts.
Kev lag luam yog txav mus rau kev simulation ntau dua, uas pab tau. Kev ua qauv khov kho thiab kev ntxhov siab tuaj yeem ua rau cov chaw kub kub. Tab sis qhov simulation tsuas yog zoo li cov ntaub ntawv cov cuab yeej cuab tam thiab ciam teb tej yam kev mob uas koj pub rau nws, uas tseem feem ntau yog los ntawm qub-fashioned sim thiab yuam kev.
Rau cov engineers nrhiav cov khoom no, qhov tseem ceeb yog saib dhau ntawm daim ntawv muag khoom. Nug txog cov txheej txheem plhaub tshwj xeeb uas siv rau 625. Sib tham txog lawv cov ntaub ntawv keeb kwm ntawm qhov ntev ntawm qhov rov ua dua tom qab cua sov kho rau cov geometries zoo sib xws. Nug txog lawv lub peev xwm machining hauv tsev rau cov khoom siv. Kev txawj ntse ntawm tus neeg muag khoom zoo li QSY, nrog nws lub sij hawm ntev tsom rau tshwj xeeb alloys thiab kev sib xyaw ua ke CNC machining, feem ntau yog nyob rau hauv no sau, tswv yim kev paub - hom uas hloov ib tug nyuaj alloy specification rau hauv ib tug txhim khu kev qha, ua hauj lwm tivthaiv. Qhov ntawd yog tus nqi tiag tiag hauv daim teb no.
