Koj hnov 'lub tes tsho Stellite' thiab cov engineers feem ntau tam sim ntawd xav tias 'nyuaj, hnav-resistant, zoo rau siab temps'. Qhov ntawd yog qhov tseeb, tab sis nws kuj yog qhov uas qhov kev ua kom yooj yim pib. Hauv kuv lub xyoo nrhiav thiab qhia cov khoom siv no, feem ntau yog rau cov twj tso kua mis thiab lub valve stems hauv kev pabcuam hnyav, kuv tau pom qhov sib txawv ntawm cov lus piav qhia hauv phau ntawv qhia thiab qhov tseeb hauv av. Nws tsis yog tsuas yog cov khoom lag luam bushing; nws qhov kev ua tau zoo nyob los yog tuag los ntawm kev xaiv qib alloy, kev ncaj ncees casting, thiab qhov tseem ceeb, tom qab cam khwb cia machining. Lub tsho tsis zoo ntawm Stellite 6 lub tes tsho tuaj yeem ua tsis tau sai dua li cov pa roj carbon monoxide kho kom zoo hauv qee qhov chaw abrasive. Qhov no tsis yog qhov theoretical - nws yog qhov koj kawm tom qab ua haujlwm nrog ob peb qhov ua tsis tiav ntxov thiab khawb rau hauv 'vim li cas'.
Lub Alloy tsis yog tag nrho zaj dab neeg
Stellite, cobalt-chromium alloy tsev neeg los ntawm Kennametal, los ntawm qib. Stellite 6, 12, 21—txhua tus muaj nws lub niche. 6 yog lub hom phiaj ntawm kev ua tub rog, zoo rau kev sib xyaw ua ke thiab corrosion. Tab sis ntawm no yog ib qho pitfall: qhia Stellite 6 rau txhua yam vim nws yog tus nto moo tshaj plaws. Kuv nco qab txog qhov project rau cov txheej txheem tshuaj twj tso kua mis tuav kub, abrasive slurry. Thawj spec yog Stellite 6 lub tes tsho. Lawv kav li ntawm 40% ntawm qhov kev cia siab lifecycle. Qhov kev soj ntsuam tsis ua hauj lwm tau taw qhia rau qhov tsis txaus galling tsis kam nyob rau hauv qhov tshwj xeeb siab-kub combo. Hloov mus rau Stellite 12, uas muaj cov qauv carbide sib txawv, thawb lub neej rov qab los. Zaj lus qhia? Lub tes tsho tsis yog lub tes tsho Stellite nkaus xwb; nws yog a Stellite 12 los yog Stellite 21 lub tes tsho. Qib dictates lub microstructure, thiab qhov ntawd dictates lub neej.
Qhov no yog qhov kev koom tes nrog lub chaw tsim khoom uas nkag siab txog metallurgy, tsis yog molding, yog qhov tseem ceeb. Ib lub tuam txhab zoo li Qingdao Qiangsenyuan Technology Co., Ltd. (QSY) los rau siab. Nrog lawv cov keeb kwm yav dhau los 30 xyoo hauv plhaub thiab peev casting ntawm cov alloys tshwj xeeb, lawv tau txais qhov no. Koj tsis tuaj yeem nchuav cov alloys xws li cam khwb cia hlau. Tus nqi solidification, cov khoom pwm - nws tag nrho cuam tshuam rau cov carbide tis. Ib tug tsis zoo cam khwb cia Stellite tuaj yeem muaj cov carbide pawg uas ua cov ntsiab lus pib rau cov kab nrib pleb hauv qab thermal cycling. QSY txoj kev tsom mus rau cobalt thiab nickel-based alloys txhais tau tias lawv tau teeb tsa rau kev tswj hwm no. Nws yog ib lub pob sib txawv ntawm cov hlau casting.
Lub machining yog lwm ib nrab. Stellite yog kev phem ntawm cov cuab yeej. Nws ua hauj lwm nyuaj. Yog tias koj tus neeg muag khoom machining siv qhov tsis ncaj ncees lawm cov qhab nia, tsis raug ceev thiab pub, lawv yuav ua rau cov micro-cracks los yog tawm ntawm cov txheej txheem tensile stressed. Lub tes tsho ntawd yog doomed los ntawm qhov pib. Kev ua tiav ntawm ID thiab OD, qhov sib koom ua ke - nws yog qhov tseem ceeb rau kev sib dhos xovxwm thiab kev sib khi zaum kawg. Ib qho zoo meej casting tuaj yeem raug rhuav tshem hauv CNC theem. Tias yog vim li cas cov khw sib xyaw ua ke uas tuav ob qho tib si casting thiab precision CNC machining nyob rau hauv ib lub ru tsev, raws li QSY ua, feem ntau xa cov khoom txhim khu kev qha. Lawv tswj tag nrho cov nqi saw, yog li tsis muaj ntiv tes taw ntawm tus caster thiab tus kws kho tshuab thaum muaj teeb meem tshwm sim.
Qhov twg lub tes tsho tsis ua haujlwm (Thiab nws feem ntau tsis yog cov khoom siv)
Kuv tau rub tawm lub tes tsho ua tsis tau ntau dua li kuv xav nco ntsoov. Lub classic tsis ua hauj lwm hom yog heev hnav, tseeb. Tab sis saib ze dua, thiab lub hauv paus ua rau feem ntau yog interfacial. Cov khib nyiab nkag nruab nrab ntawm lub tes tsho OD thiab lub tsev bore, ua rau fretting hnav. Los yog thermal expansion mismatch ua rau lub tes tsho xoob hauv kev pabcuam. Ib qhov xwm txheej tshwj xeeb suav nrog a lub tes tsho stellite ntawm lub boiler feed twj tso kua mis. Lub tes tsho nws tus kheej pom qhov hnav tsawg, tab sis lub hauv qab ncej tau corroded. Qhov tsis ua hauj lwm yog qhov teeb meem corrosion vim hais tias cov xovxwm-haum interface tsis zoo tag nrho. Cov khoom siv tes tsho yog flawless, tab sis qhov system tsim nyob ib ncig ntawm nws yog qhov tsis muaj zog txuas.
Qhov no ua rau muaj kev xav txog kev tsim qauv. Phab ntsa thickness. Nyias heev, thiab nws deforms thaum nias los yog hauv kev pabcuam. tuab heev, thiab koj nyob nraum nkim kim alloy thiab ua rau muaj kev pheej hmoo ntawm casting tsis xws luag. Rau cov ntawv thov tseem ceeb, peb feem ntau tau txav los ntawm lub tes tsho cylindrical yooj yim mus rau ib qho nrog me ntsis flange los yog zawj rau tus pin los tiv thaiv kev sib hloov. Nws ntxiv cov nqi tab sis daws teeb meem sib txawv. Nws yog kev lag luam tawm. Daim duab tsuas yog hais tias lub tes tsho Stellite, tab sis dab ntxwg nyoog yog nyob rau hauv cov dimension thiab geometric kam rau ua uas tsis yog ib txwm nyob rau hauv cov qauv spec ntawv.
Lwm qhov kev mob taub hau yog cov khoom muag thiab lub sijhawm ua haujlwm. Koj tsis tuaj yeem xaj cov no tawm ntawm lub txee. Lawv yog cov khoom ua rau kev txiav txim. Yog tias koj tus neeg muag khoom cov txheej txheem tsis ua kom yooj yim, kev txiav txim nrawm yog qhov kev xav. Qhov no yog lwm qhov laj thawj rau vet koj tus neeg muag khoom lub sijhawm ua haujlwm. Ib lub tuam txhab nrog cov ntaub ntawv ntev ntev, zoo li QSY tau hais los saum no, feem ntau tau tsim cov qauv thiab cov txheej txheem tswj uas ua rau lub sij hawm ua tau zoo dua. Tshawb xyuas lawv cov peev txheej portfolio ntawm https://www.tsingtaocnc.com muab koj lub siab ntawm lawv ntau yam - los ntawm lub plhaub pwm casting rau cov duab yooj yim mus rau peev casting rau ntau complex, ib tug qauv tsim, tag nrho cov backed los ntawm lub tsev machining. Qhov kev sib koom ua ke no yog ib qho ntxiv rau kev teem caij ua haujlwm.
Machining Dance: Tau Txais Txoj Cai
Cia peb xyaum ntawm machining, vim hais tias nws yog qhov twg tus nqi ntxiv los yog rhuav tshem. Koj tsis tuaj yeem tshuab Stellite zoo li hlau. Thawj txoj cai yog siv cov txheej txheem nruj. Ib qho kev sib tham yuav nti koj cov khoom siv carbide kim thiab ua rau lub ntsej muag ua tiav. Peb ib txwm hais kom sib tsoo rau qhov kawg ua tiav ntawm qhov chaw sib khi thaum ua tau. Nws muab qhov zoo dua, compressive-stress nto. CNC tig yog kom tau mus ze-net zoo li.
Coolant yog qhov tseem ceeb, thiab nws tsis yog hais txog kev ua kom txias xwb. Nws yog hais txog kev tiv thaiv cov txheej txheem ua haujlwm kom tsis txhob muaj qhov tob tob. Lub siab-siab, high-volume coolant system tsom txoj cai ntawm kev txiav ntug yog tsis-negotiable. Kuv tau pom cov khw sim khiav tawm nrog cov cua txias tsawg kawg nkaus, thiab cov khoom ib txwm rov qab los nrog cov teeb meem - qhov tsis txaus ntseeg lossis kev puas tsuaj subsurface uas tsuas tshwm sim hauv NDT.
Toolpath lub tswv yim tseem ceeb heev. Nce milling piv rau cov pa milling nyob rau hauv qhov kawg hla tuaj yeem cuam tshuam lub neej ntawm lub cuab yeej thiab kev ncaj ncees ntawm lub ntsej muag flange. Ib tus kws kho tshuab zoo, ib tus paub txog superalloys, yuav muaj lawv tus kheej lub hnab me me ntawm kev ua kom yuam kev-cov cuab yeej tshwj xeeb, tus nqi noj zaub mov nyiam rau qhov kawg dhau. Thaum koj pom lub khw uas muaj qhov no, koj nrog lawv. Nws yog pab pawg neeg paub ntau npaum li nws yog phau ntawv.
Tus nqi vs. Kev ua tau zoo: Kev suav tiag
Yog, a Lub tes tsho stellite yog kim. Cov ntsiab lus cobalt ib leeg pom rau qhov ntawd. Cov ntaub ntawv lag luam tsis yog hais txog tus nqi tsev; nws yog hais txog tag nrho cov nqi ntawm cov tswv. Ib lub tes tsho $ 500 uas kav ntev li 24 lub hlis hauv qhov kev pabcuam uas lub tes tsho $ 150 440C stainless kav 3 lub hlis yog tsis muaj kev xav. Tus nqi downtime rau kev hloov feem ntau dwarfs tus nqi ib feem. Qhov kev suav tau yooj yim dua thaum qhov kev ua haujlwm delta me dua, hais tias 20% lub neej ntev dua rau 100% tus nqi siab dua. Tom qab ntawd koj nkag mus rau hauv kev ntseeg siab engineering thiab kev soj ntsuam kev pheej hmoo rau qhov tsis tau npaj tseg.
Qhov no yog qhov uas lwm cov khoom siv tuaj rau hauv. Rau qee qhov kev siv tsis tshua muaj zog, cov nickel-based alloys zoo li Inconel 625 overlay lossis txawm tias cov txheej txheem ceramic txheej yuav yog cov sib tw. Tab sis rau kev sib xyaw ntawm cov hlau-rau-hlau hnav, corrosion, thiab kub siab (xav tias 500 ° C thiab siab dua), Stellite, tshwj xeeb tshaj yog cov qib tungsten siab dua, tseem kav. Nws yog ib qho kev daws teeb meem, tab sis tsis yog qhov qub.
Thaum koj tab tom nrhiav, koj tsis yog yuav ib chunk ntawm alloy. Koj tab tom yuav lub foundry lub metallurgical tswj, machinist lub peev xwm, thiab tus neeg muag khoom lub peev xwm xa ib tug dimensionally ruaj khov, npaj-rau-nruab tivthaiv. Qhov ntawd yog lub pob. Skimping ntawm ib ceg ntawm cov quav no feem ntau raug nqi ntau dua tom qab. Saib ntawm tus neeg muag khoom qhov kev pabcuam tag nrho, zoo li cov casting thiab machining combo los ntawm tus kws tshaj lij xws li QSY, feem ntau muab cov duab tag nrho cov nqi ruaj khov dua, txawm tias thawj qhov kev tsocai tsis yog qhov qis tshaj plaws.
Kev xav zaum kawg: Qhia rau kev vam meej
Yog li, yog tias kuv yuav sau ib qho spec rau lub tes tsho Stellite niaj hnub no, nws yuav tsis yog ib qho khoom siv nrog cov khoom hu xov tooj. Nws yuav qhia txog qib (Stellite 6, 12, thiab lwm yam), siv cov ASTM lossis tus qauv tsim, hu tawm cov txheej txheem casting (kev nqis peev casting nyiam rau lub luag haujlwm tseem ceeb los xyuas kom meej qhov ntom), thiab muaj cov lus qhia ntxaws txog kev ua tiav, kev siab ntev rau kev nias-haum, thiab tej zaum txawm tias ib daim ntawv qhia txog kev soj ntsuam zaum kawg rau qhov tsis xws luag ntawm qhov chaw. Nws yog cov ntsiab lus uas tig ib feem ntawm cov khoom siv rau hauv ib qho kev txhim khu kev qha engineered.
Kev lag luam tab tom txav mus rau ntau txoj kev daws teeb meem, ib yam nkaus. Hloov lub tes tsho, qee zaum nws yog Stellite overlay welded ncaj qha rau ntawm ncej. Qhov ntawd tshem tawm cov teeb meem xovxwm-haum interface tab sis qhia txog kev sib txawv ntawm qhov sib txawv thiab kev txhawj xeeb ntawm thaj tsam kub. Nws yog cov txheej txheem sib txawv ntawm kev sib pauv. Lub tes tsho tseem yog huab tais ntawm kev hloov pauv thiab kho-muaj peev xwm.
Thaum kawg, kev ua hauj lwm nrog cov tes tsho Stellite qhia koj hwm cov txheej txheem. Cov khoom yog zoo heev, tab sis nws tsis yog khawv koob. Nws qhov kev ua tau zoo yog tau txais txiaj ntsig zoo hauv qhov chaw tsim khoom thiab lub khw muag khoom. Qhov ntawd yog qhov tiag tiag takeaway tom qab tag nrho cov xyoo no. Koj tsis pom nws tsuas yog 'lub tes tsho' thiab pib pom nws raws li lub kaw lus uas nws txoj kev ncaj ncees yog tsim los ntawm txheej, los ntawm cov yaj mus rau qhov kawg micron-theem tiav.
