Thaum koj hnov 'nickel alloy', thawj yam uas tej zaum yuav los rau hauv siab yog 'nruj' lossis 'keeb'. Qhov ntawd tsis yog qhov tsis ncaj ncees lawm, tab sis nws yog qhov uas lub oversimplification pib. Nyob rau hauv kuv lub xyoo nyob ib ncig ntawm foundries thiab tshuab khw, kuv twb pom ntau yam dej num stumble vim hais tias ib tug neeg cia li teev ib tug npib tsib xee alloy ntawm ib tug kos duab, xav tias nws yog ib tug khawv koob mos txwv. Qhov tseeb yog, nws yog ib tsev neeg, thiab xaiv tus tswv cuab tsis raug - zoo li tsis meej pem Inconel 625 rau Hastelloy C-276 nyob rau hauv ib puag ncig chloride hnyav - yog txoj kev ceev ceev rau cov ntawv hnyav heev. Dab ntxwg nyoog tsis yog nyob rau hauv chemistry xwb; nws yog nyob rau hauv yuav ua li cas koj tau txais los ntawm ib tug yaj mus rau ib tug tiav, ua hauj lwm ib feem.
Casting Conundrum: Nws tsis yog Pouring Hlau xwb
Cia peb tham txog kev ua cov duab ua ntej. Nrog npib tsib xee alloy, cov txheej txheem casting peev - uas kuv pab neeg ntawm QSY tau ua rau ntau xyoo lawm - feem ntau yog mus rau qhov nyuaj geometry. Tab sis ntawm no yog cov tswv yim hiccup ntau tsis nco qab: rooj vag thiab pub mis. Cov alloys muaj cov qauv sib txawv ntawm cov khoom sib txawv piv rau cov hlau sib txawv. Koj tsis tuaj yeem rov siv tib lub rooj vag qhov system tsim. Peb kawm qhov no thaum ntxov nrog ib pawg ntawm impellers. Siv cov qauv steel qauv, xaus nrog qhov tsis zoo shrinkage kab noj hniav hauv cov hauv paus hniav. Lub yaj yog zoo, chemistry zoo meej, tab sis qhov seem yog seem vim peb kho cov txheej txheem casting raws li cov khoom lag luam. Tam sim no, rau txhua qhov tshiab npib tsib xee alloy qib, peb khiav solidification simulations. Nws tsis yog kev kawm; nws yog hais txog tsis nchuav ntau txhiab daus las ntawm superalloy yaj rau hauv pwm tsis zoo.
Plhaub pwm casting yog lwm yam tsiaj nyaum. Rau cov duab yooj yim, nws raug nqi zoo. Tab sis qhov thermal shock tsis kam ntawm lub plhaub yog qhov tseem ceeb. Nickel alloys feem ntau nchuav rau ntawm qhov kub siab dua, thiab lub plhaub uas tuaj yeem ua cov pa roj carbon steel yuav tawg lossis deform, ua rau muaj teeb meem loj lossis hlau nkag. Peb qhov tshwj xeeb zircon-raws li refractories rau peb npib tsib xee alloy ua haujlwm. Nws yog ib qho kev nthuav dav, tab sis hla nws txhais tau tias koj tab tom twv txiaj nrog qhov chaw tiav thiab qhov ntev ntev ntawm qhov pib.
Thiab tom qab ntawd muaj kev tshem tawm tom qab-txiav cov rooj vag thiab cov khoom noj. Nrog ib yam dab tsi zoo li Inconel 718 nyob rau hauv lub hnub nyoog, nws twb ua hauj lwm-hardening. Siv qhov tsis ncaj ncees lawm abrasive txiav disc los yog siv lub siab ntau dhau los tsim ib qho chaw tawv tawv uas tuaj yeem ua npau suav phem rau yav tom ntej CNC machining. Qee lub sij hawm, nws yog qhov zoo dua los ua qhov kev txiav ntxhib hauv cov tshuaj kho mob, tom qab ntawd hnub nyoog. Nws ntxiv ib kauj ruam, tab sis txuag cov cuab yeej thiab mob taub hau tom qab. Qhov no tsis yog cov ntaub ntawv kawm; nws yog ledger-book logic kawm los ntawm rework xaj.
Machining: Qhov twg Txoj Kev Ua Tau Raws Li Lub Tuam Txhab Txhaum Cai
Qhov no yog qhov uas cov roj hmab tau raws li txoj kev, los yog ntau dua, qhov twg carbide ntsib cov nti. Xa rawv npib tsib xee alloy casting mus rau lub khw muag khoom txheem yog ib daim ntawv qhia rau cov nyiaj txiag tshuab. Thawj txoj cai: hwm lub hardness thiab ua hauj lwm hardening. Kuv nco qab txog ib txoj hauj lwm rau lub nplhaib turbine foob, ua los ntawm Haynes 230. Cov ntawv luam tau hu kom ua tiav zoo ntawm txoj kab uas hla. Cov thawj zaug dhau mus tau zoo, tab sis ntawm qhov kawg ua tiav, qhov kev xaiv ntxig tsis raug - dhau ib qho geometry. Nws tsis tau txiav; nws rub. Cov txheej txheej txheej ua haujlwm hnyav heev nws snapped ob lub cuab yeej ua ntej peb nres. Qhov kho? Aggressive, ib txwm pub. Koj yuav tsum nyob twj ywm hauv qhov txiav thiab tsis txhob cia lub cuab yeej nyob. Lub teeb txiav yog koj tus yeeb ncuab.
Coolant tsis yog ua kom txias xwb; Nws yog hais txog lubrication ntawm txiav ntug. High-pressure, los ntawm cov cuab yeej coolant yog yuav luag tsis-negotiable rau sib sib zog nqus nta. Peb tau kawm los txiav txim siab qhov txias txias ib yam nkaus-kev sib xyaw kom zoo dua rau lubricity zoo dua, txawm tias nws txhais tau tias kev tu cov dej ntau zaus. Thiab cov khoom siv? Ceramic inserts tuaj yeem ua haujlwm rau roughing qee qib, tab sis rau kev ua tiav, tus hwm submicron-grain carbide nrog cov txheej tshwj xeeb (xws li AlTiN) yog peb qhov chaw pib ib txwm muaj. Txawm li cas los xij, peb cia siab tias yuav dhau los ntawm kev ntxig ntau dua li nrog stainless. Nws yog tus nqi koj ci rau hauv qhov kev tsocai los ntawm qhov pib.
Fixturing yog lwm yam kev kos duab. Cov khoom no tuaj yeem muaj cov kev ntxhov siab seem los ntawm casting. Kev txhoj puab heev tom ntawm ib sab tuaj yeem ua rau qhov txav me ntsis hauv lub vise lossis fixture, cuam tshuam rau kev ua haujlwm tom ntej. Rau cov khoom tseem ceeb, qee zaum peb ntxiv qhov kev ntxhov siab-txhim kho anneal tom qab kev ua haujlwm ntxhib, ces rov qab los ua kom tiav. Nws zoo nkaus li tsis muaj txiaj ntsig, tab sis nws feem ntau ua tau zoo dua li sim caum tus thib kaum ntawm ib feem uas tau txiav txim siab rau warp. Qhov no yog hom txheej txheem nuance koj tsim tom qab machining ob peb puas ntawm cov khoom no, tsis yog los ntawm phau ntawv.
Cov Khoom Maze: Xaiv Txoj Cai Fighter rau Round
Tsis yog txhua qhov kev sib ntaus sib tua zoo ib yam. Kev qhia txog nickel alloy zoo li hais tias tau txais lub tsheb - puas yog rau kev khiav khoom noj lossis kev sib tw suab puam? Ntawm QSY, peb pom ntau yam. Monel 400 rau marine daim ntaub ntawv qhov twg corrosion kuj yog qhov tseem ceeb tab sis huab cua kub tsis yog. Inconel 600 thiab 601 rau cov khoom siv hluav taws xob - zoo oxidation tsis kam. Tab sis thaum nws tau txais kev phem tiag tiag, nrog cov kua qaub kub lossis sulfidation, qhov ntawd yog cov qib siab molybdenum zoo li Hastelloy C-22 lossis C-276 tuaj. Kuv tau tham cov neeg siv khoom tawm ntawm kev siv C-276 rau ib puag ncig me me uas muaj 316L stainless yuav kav ntev npaum li ib feem peb ntawm cov khoom siv.
Tom qab ntawd muaj qhov weldability thiab kho qhov tseem ceeb. Qee cov alloys, zoo li Inconel 625, muaj kev zam txim zoo. Lwm tus, zoo li ntau ntawm cov nag lossis daus-nyiam cov qib (xav tias Inconel 718), yuav tsum nruj heev ua ntej thiab tom qab vuam kub kho kom tsis txhob tawg lossis poob khoom. Yog tias qhov casting muaj qhov tsis xws luag, koj puas tuaj yeem kho nws? Cov lus teb ntawd cuam tshuam rau tus nqi tawm los thiab tus nqi. Peb ib txwm muaj kev sib tham thaum lub sij hawm xaiv cov khoom. Nws yog kev txiav txim siab sib koom ua ke nrog cov neeg siv khoom, tsis yog peb lees txais cov ntawv luam tawm xwb.
Thiab cia peb tsis txhob hnov qab cov saw hlau. Qee qib, tshwj xeeb tshaj yog cov uas muaj cobalt siab lossis tshwj xeeb chemistry, tuaj yeem muaj sij hawm ua cov hmoov txhuas ntev lossis cov nqi tsis hloov. Thaum lub sij hawm ib tug crunch, peb yuav tsum tau soj ntsuam ib tug hloov los ntawm Inconel 625 mus rau ib tug zoo sib xws tab sis tsawg dua qib rau ib daim ntawv thov tsis tseem ceeb. Nws yuav tsum tau ua tib zoo tshuaj xyuas ntawm tus neeg siv khoom spec, tab sis nws txuag lub sijhawm ua haujlwm. Flexibility, txhawb nqa los ntawm kev paub, yog ib feem ntawm kev pabcuam.
Kev sib xyaw ua ke: Los ntawm Foundry mus rau qhov tiav hauv ib lub ru tsev
Qhov no yog qhov twg tus qauv zoo li peb ntawm Qingdao Qiangsenyuan Technology Co., Ltd. (QSY) qhia nws tus nqi. Handling ob lub plhaub molding/peev casting thiab cov CNC machining internally tsis yog hais txog kev yooj yim xwb. Nws yog hais txog kev tswj thiab tawm tswv yim. Thaum pab pawg machining ntsib qhov chaw nyuaj uas tsis xav txog lossis qhov porosity subsurface, lawv tuaj yeem taug kev rov qab mus rau pab pawg neeg tsim khoom. Ua ke, lawv tuaj yeem faib nws: nws puas yog qhov sib xyaw ua ke, qhov teeb meem turbulence thaum lub sij hawm nchuav, lossis qhov chaw txias txias tsis zoo? Qhov kev kawm kaw kaw tsis tuaj yeem ua tsis tau thaum casting thiab machining yog sib cais ntawm ob tus neeg muag khoom uas yuav luag ib leeg.
Peb tau tsim peb cov txheej txheem ntawm qhov kev sib koom ua ke no. Piv txwv li, peb feem ntau tso cov khoom lag luam ntxiv rau ntawm qhov chaw casting uas peb paub tias tsis yooj yim rau noj, paub txog peb tus kheej machining department yuav daws nws. Peb tuaj yeem kho cov kev kho cua sov tsis zoo raws li cov txheej txheem machining tau npaj tseg. Qhov kev sib koom ua ke no, tsim ntau dua 30 xyoo hauv casting thiab machining, hloov cov ntsiab lus tsis ua hauj lwm rau hauv kev tswj hwm, tswj cov kauj ruam. Nws txo qhov kev pheej hmoo tag nrho rau cov neeg siv khoom, txawm tias tus nqi ib-kg rau lub casting tej zaum yuav zoo ib yam li ib tug standalone foundry.
Qhov kawg validation feem ntau tuaj nyob rau hauv kev sim. Rau qhov chaw siab ncaj ncees, peb ua ntau NDT-dye penetrant, ultrasonic. Nrhiav qhov tsis txaus siab tom qab ua tiav tag nrho yog kev puas tsuaj. Pom nws tom qab casting tab sis ua ntej machining loj yog qhov kev tswj tsis tau. Peb cov kev ua haujlwm sib xyaw ua ke tso cai rau qhov chaw kuaj nruab nrab ntawd, uas yog qhov tseem ceeb rau tus nqi siab npib tsib xee alloy cov khoom. Nws yog qhov sib txawv ntawm kev xav: peb tsis yog muag ib qho casting lossis kev pabcuam machining; peb muag khoom siv tau, txhim khu kev qha zaum kawg.
Saib Rov Qab, Mus Tom Ntej
Yog li ntawd, tom qab tag nrho cov no, dab tsi yog qhov takeaway? Nickel alloy tsis yog cov khoom koj tsuas yog yuav tawm ntawm lub txee thiab muab pov rau hauv cov txheej txheem txheem. Nws xav tau kev hwm, ib txoj hlua ntawm kev paub txog kev txiav txim siab los ntawm kev xaiv cov hlau kom tiav. Qhov ua yuam kev loj tshaj plaws uas kuv tau pom yog los ntawm kev kho nws raws li kev hloov kho yooj yim los ntawm stainless hlau. Nws yog ib hom lus sib txawv.
Kev lag luam yog txav mus rau ntau qhov nyuaj, qhov ua tau zoo dua qub, feem ntau nrog cov cua txias sab hauv lossis nyias, ntu aerodynamic ua tau los ntawm peev casting. Qhov no thawb qhov txwv ntawm ob qho tib si casting thiab machining txheej txheem. Peb nyob nraum tweaking tsis tu ncua, sim tshiab toolpaths, tej zaum ua tsis tau tejyam ntawm ib tug xeem piece, kom tau nws txoj cai rau cov ntau lawm khiav. Qhov ntawd yog qhov tseeb ntawm hauv pem teb.
Nws ntxhov, nws nthuav dav-oriented, thiab nws yuav tsum tau ua siab ntev. Tab sis thaum koj pom qhov kawg ntawd - ib qho zoo meej, cov duab zoo nkauj hauv cov khoom siv uas tuaj yeem tiv taus ntuj raug txim - xa tawm mus rau lub zog ntawm lub tshuab hluav taws xob lossis siv cov tshuaj corrosive, cov zom zaws xav tias tsim nyog. Kev paub tsis nyob hauv phau ntawv; nws yog nyob rau hauv cov caws pliav ntawm cov cuab yeej qub thiab cov ntawv sau rau cov neeg taug kev ua haujlwm ntau xyoo. Qhov ntawd yog qhov ua haujlwm nrog nickel alloy tiag tiag txog.
