Koj pom QT450-10 ntawm kev kos duab lossis cov ntaub ntawv thov, thiab nws yooj yim rau koj tsuas yog xav txog cov hlau nplaum thiab txav mus. Tab sis qhov ntawd yog qhov uas ntau qhov kev xav pib, thiab hais ncaj ncees, qhov twg qee qhov haujlwm pib tawm ntawm spec. Lub 450 hais txog lub zog tensile hauv MPa, thiab 10 yog qhov feem pua elongation - qhov no yog cov cai yooj yim. Zaj dab neeg tiag tiag, qhov tseem ceeb ntawm lub khw hauv pem teb lossis thaum ib feem tsis ua haujlwm hauv thaj chaw, yog hais txog cov qauv matrix, cov nodule suav, thiab nws tau nchuav li cas thiab kho cua sov. Kuv tau pom ntau RFQs qhov twg tus neeg yuav khoom tsuas yog nplawm ntawm QT450-10 vim tias nws yog qib ib txwm, tsis paub txog qhov kev ua tau zoo nws txhais tau tias. Nws tsis yog rab phom khawv koob; nws yog qhov sib npaug ntawm lub zog thiab ductility uas yuav tsum tau ua kom haum rau cov kev pabcuam tiag tiag.
Txoj Kev Muaj Peev Xwm Muaj Peev Xwm ntawm Kev Qhia thiab Sourcing
Thaum koj tab tom nrhiav ib feem hauv QT450-10, koj tsis yog yuav khoom xwb. Koj tab tom yuav lub peev xwm txheej txheem. QT stands rau quenched thiab tempered, uas txhais tau hais tias lub foundry yuav tsum muaj txoj cai rauv teeb thiab txheej txheem tswj kom ua tau raws li ferritic-pearlitic matrix tsis tu ncua. Kuv nco qab txog txoj haujlwm rau lub cev hydraulic valve ob peb xyoos dhau los. Daim ntawv sau npe rau QT450-10, thiab peb tau txais los ntawm tus neeg xa khoom tshiab uas tau cog lus rau qib. Cov khoom siv tau zoo nkauj, tab sis thaum lub sij hawm ntsuas siab, peb muaj qee qhov tawg. Daim ntawv qhia kev kuaj rov qab los: tensile zoo, tab sis qhov elongation tsuas yog nyob ib ncig ntawm 7%. Lub matrix muaj pearlite ntau dhau, zoo li los ntawm qhov tsis sib xws ntawm lub voj voog tempering. Tus neeg muag khoom tau ntsib tus lej lej ntawm daim ntawv pov thawj, tab sis cov khoom tsis yog tiag tiag hauv plawv QT450-10 ntau. Nws yog ciam teb.
Qhov no yog vim li cas kev koom tes ntev nrog cov foundries tseem ceeb. Ib lub tuam txhab zoo li Qingdao Qiangsenyuan Technology Co., Ltd. (QSY), nrog rau lawv 30 xyoo hauv casting, feem ntau muaj cov kev paub txog kev tshawb fawb txog qhov no. Lawv tau pom dab tsi tshwm sim thaum kho cua sov nkhaus tsis ua raws li qhov tseeb. Rau ib tug complex plhaub pwm casting uas yuav tsum tau ob qho tib si siab-tight thiab machinable, tsuas yog ntaus cov tshuaj muaj pes tsawg leeg tsis txaus. Cov QT450-10 cov txheej txheem yuav tsum tau nkag mus rau hauv lawv cov kev xyaum. Kuv yuav tso siab rau lawv ntau dua rau daim ntawv thov tseem ceeb tshaj li lub khw uas tsuas yog nchuav hlau thiab cov khoom siv hluav taws xob sab nraud. Koj tuaj yeem tshawb xyuas lawv txoj hauv kev ntawm lawv qhov chaw ntawm https://www.tsingtaocnc.com - lawv tsom rau lub plhaub pwm thiab peev casting rau ntau yam alloys qhia txog kev tuav cov txheej txheem uas tswj tau ntau dua li cov xuab zeb yooj yim ntsuab.
Lwm lub ntsiab lus tseem ceeb: machinability. QT450-10 feem ntau yog qhov zoo, tab sis nws tsis zoo ib yam ntawm txhua pawg. Lub hardness ntau yam (feem ntau 150-200 HB) yog dav txaus uas koj tuaj yeem tau txais ib pawg uas leans mus rau qhov kawg siab, uas zom los ntawm cov cuab yeej sai dua. Yog tias koj tab tom ua cov tshuab CNC tshuab, zoo li cov kev pabcuam QSY muab, qhov sib txawv no tseem ceeb. Ib tus neeg muag khoom zoo yuav ua haujlwm nrog koj txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau nws Nws yog qhov kev sib koom tes zoo li no uas hloov cov khoom siv tshwj xeeb rau hauv ib qho kev txhim khu kev qha.
Qhov twg nws haum thiab qhov twg nws tsis
Qib no yog tus neeg ua haujlwm rau qhov laj thawj zoo. Gearboxes, twj tso kua mis vaj tse, lub luag haujlwm hnyav - cov ntawv thov uas koj xav tau kev poob siab ntau dua li cov hlau grey zoo li Class 35 tuaj yeem muab, tab sis tsis xav tau lub zog siab dua (thiab kim dua) ntawm ib QT600-3 los yog QT700-2. 10% elongation yog qhov tseem ceeb. Nws muab me ntsis ntawm muab. Kuv tau siv nws rau mounting daim hlau ntawm cov tshuab hnyav uas yuav tsum tau nqus cov vibrational loads yam tsis muaj cracking. Nws yog feem ntau lub neej ntawd hloov kho los ntawm grey hlau thaum txo qhov hnyav lossis siab dua qhov xav tau.
Tab sis muaj cuab. Tsis txhob qhia nws rau nyias-walled seem yog tias koj tab tom ua xuab zeb casting. Cov yam ntxwv ntawm cov hlau ductile solidification xav tau ib qho kev hloov pauv los tiv thaiv qhov tsis xws luag los yog carbides. Yog tias tus qauv tsim muaj kev hloov pauv sai hauv ntu tuab, koj tuaj yeem xaus nrog cov pob tawv tawv uas ua rau kev ua haujlwm tsis zoo thiab ductility hauv zos. Qee zaum, tus tsim engineer hu rau QT450-10 nyob rau hauv ib tug geometry uas zoo dua haum rau ib tug hlau forging los yog txawm ib tug malleable hlau. Koj yuav tsum thawb rov qab thiab sib tham txog qhov ua tau zoo ua ntej. Qhov no yog qhov chaw tsim cov tswv yim engineering yog qhov tseem ceeb, ib yam dab tsi uas muaj ntau tus txheej txheem xws li QSY, cuam tshuam nrog txhua yam los ntawm cam khwb cia hlau mus rau nickel-raws li alloys, yuav zoo li chij ntxov.
Corrosion yog lwm qhov tsis meej pem. Nws zoo dua li cov pa roj carbon steel, tab sis nws tsis yog stainless. Rau qhov chaw ntub dej, cov xim pleev xim lossis txheej txheej tseem yuav tsum tau ua. Kuv twb pom unpainted QT450-10 qhov chaw nyob rau hauv ib tug damp warehouse nto-xeb nyob rau hauv lub hlis. Cov spec txhais tau hais tias txhua yam khoom, tsis yog ib puag ncig tiv thaiv.
The Heat Treatment Dance
QT yog txhua yam. Raws li-cam khwb cia hlau hlau (feem ntau hu ua as-cam khwb cia 450-10, uas txawv) muaj qhov sib txawv microstructure. Lub quench thiab temper voj voog transforms nws. Tab sis dab ntxwg nyoog yog nyob rau hauv cov ntsiab lus: austenitizing kub, quench nruab nrab (roj yog ntau), tempering kub thiab lub sij hawm. Ob peb degrees sib txawv hauv tempering tuaj yeem hloov qhov hardness thiab cuam tshuam qhov tseem ceeb. Lub chaw tsim khoom siv nws lub qhov cub rau ntawm qhov nruj SOP yuav muaj qhov sib txawv tsawg-rau-ntau.
Peb tau tshawb xyuas tus neeg xa khoom ib zaug uas muaj teeb meem sib xws. Lawv lub qhov cub tawg tsis sib haum - lawv yuav ntim ntau qhov me me ua ke, ua rau cua sov tsis sib xws thiab quenching. Qhov chaw nyob sab nraud ntawm lub pob tawb tau ntsib QT450-10, cov nyob nruab nrab yog softer. Lawv kho nws los ntawm kev rov tsim kho lawv qhov kev txhim kho thiab siv kev tswj hwm nruj dua. Nws yog ib qho yooj yim, tab sis nws ua los yog tawg cov khoom. Cov txheej txheem tswj hwm qib no yog qhov cais lub khw ua haujlwm los ntawm tus kws tshaj lij. Thaum ib lub tuam txhab teev cov pwm pwm thiab peev casting ua ke nrog CNC machining, raws li QSY ua, nws txhais tau hais tias ua kom pom tseeb ntawm cov pwm mus rau qhov tiav, uas ib txwm txuas mus rau kev kho cua sov.
Post-casting cov kauj ruam tseem ceeb heev. Yog tias koj xav tau vuam nws, uas yog ua tau tab sis tsis yog ib txwm pom zoo, koj xav tau kev kho cua sov ua ntej thiab tom qab cua sov kom tsis txhob tsim cov tawv tawv, nkig hauv thaj chaw uas muaj cua sov. Nws yog qhov zoo dua los tsim ib puag ncig vuam lossis siv cov khoom sib txawv.
Failure Analysis thiab Learning
Lub sijhawm kawm feem ntau yog los ntawm qhov tawg. Kuv muaj ib QT450-10 lever caj npab poob hauv qaug zog. Cov pob txha tawg tau pom cov qauv ntawm ntug hiav txwv zoo nkauj, tab sis kev pib yog ntawm lub kaum ntse ntse sab hauv - qhov kev ntxhov siab uas tsis yog ntawm daim duab tab sis yog los ntawm cov qauv luam tawm. Cov khoom nws tus kheej tau kuaj zoo. Zaj lus qhia tsis yog hais txog qib; nws yog hais txog kev sib txuas lus ntawm kev thauj khoom mus rau qhov chaw tsim khoom kom lawv tuaj yeem tshuaj xyuas cov pwm tsim rau kev ntxhov siab. Ib tug zoo foundry khub ua raws li ib tug extension ntawm koj pab neeg engineering. Lawv yuav tsum nug cov yam ntxwv uas zoo li teeb meem.
Lwm qhov xwm txheej: qhov chaw uas dhau tag nrho cov kev sim tshuab tab sis ua tsis tiav hauv kev ntsuas ntsev tsuag ua ntej ntxov. Tus neeg ua txhaum? Kev tu tsis tiav tom qab kev kho cua sov. Residual quenching roj los yog tempering furnace contaminants daig nyob rau hauv qhov muag tsis pom qhov ua kom corrosion. Cov specification yog mechanical, tab sis daim ntawv thov yuav tsum tau ib puag ncig durability. Qhov kev txhim kho tau ntxiv ib qho kev tu thiab passivation rau kev ua haujlwm. Nws yog cov txheej txheem ntxiv uas ua kom tiav daim duab.
Saib ntawm Broader Supply Chain
Nyob rau hauv lub ntiaj teb no toj roob hauv pes, paub koj tus neeg muag khoom lub peev xwm tseem ceeb yog tsis sib tham. QT450-10 yog tus txheej txheem thoob ntiaj teb, tab sis kev ua tiav tsis zoo ib yam. Ib qho chaw tsim khoom uas feem ntau ua stainless hlau peev casting tuaj yeem kho cov hlau ductile raws li kev lag luam sab, thiab lawv cov txheej txheem yuav tsis zoo rau nws. Conversely, ib tug foundry sib sib zog nqus nyob rau hauv cam khwb cia hlau, tej zaum yuav ua hauj lwm nrog ib tug ntau yam ntawm grey mus rau ductile mus rau tshwj xeeb alloys, yuav muaj ib tug zoo tuav. Los ntawm lawv lub tuam txhab intro, QSY cov ntaub ntawv teev meej meej suav nrog cam khwb cia hlau thiab hlau nrog rau cov alloys tshwj xeeb, tawm tswv yim dav tab sis cov khoom siv hauv paus. Rau tus qauv tab sis kev ua tau zoo-sensitive qib zoo li QT450-10, qhov ntawd yog ib qho teeb meem zoo.
Thaum kawg, ib txwm tau txais cov ntawv xeem thawj zaug thiab cov ntawv pov thawj tsis tu ncua. Tab sis tsis txhob cia li ua daim ntawv pov thawj ntawm kev ua raws cai. Saib ntawm cov lej tiag. Puas yog qhov elongation tsis tu ncua ntawm 12-13%, lossis puas yog bouncing ntawm 10 thiab 11? Tus qub qhia txog tus txheej txheem hauv kev tswj hwm. Cov tom kawg yuav qhia tau tias ib yam dab tsi drifting. Cov khoom siv, QT450-10, yog txhim khu kev qha tsuas yog deb ntawm cov txheej txheem uas tsim nws. Nws tsis yog ib yam khoom uas koj tuaj yeem yuav ntawm tus nqi ib leeg. Tus nqi tiag tiag yog nyob rau hauv kev ntseeg siab ntawm cov khoom kawg hauv koj lub rooj sib txoos, thiab qhov ntawd tau hais los ntawm ntau xyoo dhau los ntawm kev paub, cov txheej txheem tswj, thiab tus neeg muag khoom uas nkag siab qhov sib txawv ntawm kev ua cov duab thiab engineering ua ib feem.
