Thaum cov neeg feem coob hnov 'cov menyuam hlau', lawv pom ib qho yooj yim, lub tog raj kheej. Nyob rau hauv kev muaj tiag, qhov ntawd yog qhov uas thawj loj misconception dag. Lub sij hawm npog lub ntiaj teb ntawm cov khoom, los ntawm qhov yooj yim conveyor idler mus rau lub plawv ntawm lub tshuab dov, thiab txhua yam nyob nruab nrab. Tau txais daim ntawv thov tsis raug ntawm qhov spec theem yog qhov yuam kev kim heev uas kuv tau pom ntau zaus. Nws tsis yog hais txog txoj kab uas hla thiab ntev; Nws yog hais txog kev sib tshuam ntawm cov khoom siv, nto tiav, thermal dynamics, thiab load profiles uas cais ib feem uas kav los ntawm ib qho uas ua tsis tiav ntxov.
Cov Tub Ntxhais: Cov Khoom Siv thiab Kev Txiav Txim Siab
Xaiv cov khoom siv hauv paus yog thawj rab diav rawg tiag tiag hauv txoj kev. Rau kev xa tawm dav dav hauv cov khoom nruab nrab, cov hlau tsis muaj zog tuaj yeem ua. Tab sis qhia cov cua sov, corrosion, los yog huab cua siab, thiab koj nyob rau hauv ib cheeb tsam alloy. Qhov no yog qhov chaw foundries nrog cov ntaub ntawv sib sib zog nqus dhau los ua qhov tseem ceeb. Kuv tau ua haujlwm nrog Qingdao Qiangsenyuan Technology (QSY) ntawm ntau qhov haujlwm ua tiav vim tias lawv cov keeb kwm yav dhau los 30 xyoo hauv casting. Lawv tsis yog nchuav hlau xwb; lawv to taub yuav ua li cas sib txawv alloys coj nyob rau hauv kev ntxhov siab. Rau qhov kub-kub calendering roller, peb xaiv rau nickel-based alloy los ntawm lawv peev casting txheej txheem. Lwm txoj hauv kev - kev tsim los ntawm ib qho khoom siv-yuav tau txwv tsis pub kim thiab khib nyiab.
Txoj kev casting nws tus kheej dictates ntau. Plhaub molding yog zoo heev rau loj, kuj yooj yim geometries nyob rau hauv hlau los yog hlau, muab ib tug zoo tshuav nyiaj li cas ntawm cov nqi thiab deg kev ncaj ncees. Tab sis rau qhov nyuaj sab hauv cua txias channel peb xav tau nyob rau hauv lub tshuab luam ntawv cov menyuam, peev casting yog tib txoj hauv kev kom ua tiav qhov ze-net-zoo precision yam tsis muaj kev ua haujlwm tom qab cam khwb cia. Raws li-cam khwb cia nto los ntawm cov txheej txheem peev zoo tuaj yeem txo cov sij hawm sib tsoo zaum kawg.
Ib qho tsis ua hauj lwm nrog kuv yog kev sim ua ntej siv tus qauv stainless hlau (304) rau cov menyuam hauv qhov chaw me me acidic washdown. Peb xav tias nws yog 'stainless', yog li nws yuav tsum tuav. Nws pitted hauv rau lub hlis. Qhov teeb meem tsis yog kev xaiv qib ib se, tab sis tom qab-casting tshav kub kho thiab passivation. Tus neeg muag khoom thaum lub sijhawm hla dhau qhov kev ua kom zoo, tawm hauv qhov chaw tsis zoo. Tam sim no, peb ib txwm qhia tsis yog tsuas yog cov hlau, xws li 316L lossis 17-4 PH, tab sis kuj tseem muaj cov txheej txheem kev kho cua sov thiab cov kev xav tau ntawm qhov chaw. Ib lub tuam txhab zoo li QSY, teev ntawm tsingtaocnc.com, tau txais qhov no; lawv cov kev txawj ntse hauv cov alloys tshwj xeeb txhais tau tias lawv tab tom xav txog cov txheej txheem tom qab ua tiav los ntawm lub sijhawm cov hlau raug xaiv.
Precision is in the Finish: Machining Dance
Casting tau txais koj 80% muaj. Qhov kawg 20% - qhov tseeb qhov tseeb, concentricity, thiab nto tiav - yog qhov chaw machining. Qhov no yog lub sij hawm ua-los-tawm. Cov menyuam tuaj yeem raug cam khwb cia zoo los ntawm cov hlau zoo, tab sis yog tias nws tau ua haujlwm tawm ntawm qhov chaw lossis nrog cov phab ntsa tsis sib haum, nws yuav vibrate, ua rau tsis sib xws, thiab ua rau cov khoom puas tsuaj.
Peb lean hnyav heev CNC machining rau qhov no. Rau cov chais tsav tsheb, qhov kam rau ua ntawm cov ntaub ntawv bearing feem ntau nyob rau hauv ob peb puas ntawm ib millimeter. Qhov kev sib tw yog tuav cov kev zam no thaum tswj cov kev ntxhov siab nyob hauv cov hlau. Ib qho kev txiav hnyav hauv ib qho tuaj yeem ua rau muaj kev ntxhov siab uas cuam tshuam rau qhov tom qab. Nws yog ib qho qeeb qeeb, ntau txheej txheem ntawm roughing thiab xov. Kuv nco qab txog daim ntawv loj-ntev uas peb yuav tsum tau them nyiaj rau ib feem ntawm tus kheej deflection thaum lub sijhawm machining. Peb tau siv qhov chaw nyob ruaj khov thiab kho qhov txiav txiav hauv lub sijhawm tiag tiag raws li cov lus pom los ntawm tus kws kho tshuab - qee yam uas xav tau tus neeg teb xov tooj uas nkag siab cov khoom siv, tsis yog lub tshuab xwb.
Qhov yuav tsum tau ua kom tiav yog lwm txheej. Daim iav tiav rau zaj duab xis laminator cov menyuam ua tiav los ntawm kev sib tsoo thiab polishing, feem ntau nrog pob zeb diamond abrasives. Tab sis 'daim iav tiav' yog vague. Peb qhia meej Ra qhov tseem ceeb (roughness nruab nrab). Ib Ra ntawm 0.2 micrometers xav tias du, tab sis rau qee qhov kev siv high-end, peb yuav tsum tau nqis mus rau 0.05. Ua tiav qhov no ntawm cov menyuam yaus ntev yuav tsum muaj lub txaj ncaj ncaj thiab cov txheej txheem zoo tib yam. Ib qho me me imperfections nyob rau hauv lub hauv paus casting yuav telegraph los ntawm. Yog li ntawd, kev sib koom tes ntawm cov foundry thiab lub khw muag khoom yog qhov tseem ceeb heev. Thaum lawv nyob hauv ib lub ru tsev, zoo li ntawm QSY qhov twg casting thiab CNC machining yog kev sib koom ua ke, cov tshuab ua haujlwm tuaj yeem rov qab mus rau qhov chaw tsim khoom ntawm cov av porosity lossis hardness variations, tsim kom muaj cov lus qhia nruj dua rau qhov zoo.
Daim ntawv thov npau suav phem thiab tiag-lub ntiaj teb kho
Phau ntawv specs ntsib lub Hoobkas hauv pem teb kev muaj tiag. Ib qho teeb meem classic yog thermal expansion. Peb tsim ib tug rhuab rau cov menyuam rau ib tug yas extrusion kab, xam cov expansion raws li cov alloy lub coefficient. Dab tsi peb tsis suav tag nrho yog qhov ntsuas kub ntawm lub ntsej muag yog tias cov cua sov sab hauv tsis ua haujlwm ntawm ib sab. Qhov sib txawv ntawm qhov nthuav dav ua rau me ntsis hneev, txaus los tsim cov thickness variation ntawm cov ntawv yas. Qhov kev kho tsis yog rov ua rau cov menyuam, tab sis rov tsim kho cov cua sov cartridge layout thiab ntxiv cov ntsuas kub ntawm qhov ntev kom tswj tau zoo dua.
Lwm qhov mob taub hau yog bearing seat fretting. Nyob rau hauv lub siab ceev cov menyuam, txawm lub microscopic txav ntawm cov menyuam phau ntawv journal thiab cov kabmob puab haiv neeg tuaj yeem ua rau fretting corrosion, uas kaw cov kabmob. Qhov kev daws teeb meem feem ntau suav nrog kev qhia me ntsis nruj dua thiab qee zaum siv cov txheej tshwj xeeb los tiv thaiv fretting ntawm phau ntawv xov xwm. Nws yog qhov nthuav dav me me uas tsis tau tshwm sim hauv thawj CAD qauv tab sis dhau los ua qhov teeb meem kev ntseeg siab loj.
Ces muaj qhov sib npaug. Dynamic ntsuas yog muab rau txhua yam uas tig ntawm qhov nrawm. Tab sis qhov sib npaug zoo li qub tseem ceeb heev, tshwj xeeb tshaj yog rau cov menyuam loj, qeeb qeeb. Peb muaj cov ntaub ntawv qhia dav dav uas zoo li zoo. Tab sis ntawm nws qhov kev ua haujlwm ceev, qhov tsis sib xws ntawm ob peb grams ntawm qhov kawg tau tsim ib nplawm uas ua rau cov npoo ntawm cov ntaub puas. Zaj lus qhia: ib txwm qhia qhov sib npaug ntawm qib (piv txwv li, G2.5 ntawm kev ua haujlwm RPM) thiab cov dav hlau kho. Tsis txhob xav tias lub khw paub; sau nws tawm.
Thaum Standard Tsis Txaus: Qhov Kev Cai Geometry
Feem ntau cov kev sib tham yog tsom rau lub tog raj kheej ncaj. Tab sis qee qhov haujlwm nyuaj tshaj plaws suav nrog kev cai profiles. Grooved rollers, crowned rollers (chim-puab), los yog rollers nrog helical qauv rau web guiding. Txhua qhov nthuav qhia tshwj xeeb kev tsim khoom hurdles. Ib tug crowned roller, piv txwv li, yuav tsum tau CNC tig nrog ib tug programmed nkhaus. Kev ntsuas lub hauv paus - qhov sib txawv ntawm qhov nruab nrab thiab qhov kawg txoj kab uas hla - tej zaum tsuas yog ob peb feem kaum ntawm ib millimeter tshaj li ob-meter ntev. Programming thiab paub tseeb tias yuav tsum muaj txuj ci.
Rau cov menyuam grooved siv nyob rau hauv texturing, lub sharpness thiab sib xws ntawm lub groove cag vojvoog yog qhov tseem ceeb. Siv cov cuab yeej txiav txheem yuav tawm ntawm lub vojvoog. Yog tias tus qauv tsim hu rau lub kaum ntse ntse, koj feem ntau yuav tsum tau qhia EDM (Electrical Discharge Machining) tom qab pib tig, uas ntxiv cov nqi thiab sijhawm. Nws yog kev lag luam tawm uas yuav tsum tau hashed tawm hauv kev tshuaj xyuas tsim. Puas yog lub kaum ntse ntse ua haujlwm tsim nyog, lossis nws tsuas yog ntawm daim duab vim tsis muaj leej twg nug nws?
Peb ib zaug xav tau ib tug loj cov menyuam nrog ib tug series ntawm ntiav, tapered recesses raws nws ntev-ib yam ntawm tsis zoo qauv. Machining nws los ntawm cov khoom yuav yog npau suav phem ntawm cov cuab yeej siv thiab sijhawm. Peb tau ua haujlwm nrog pab pawg engineering ntawm QSY los pov cov qauv kev ua haujlwm yooj yim rau hauv ib feem uas siv lawv cov txheej txheem plhaub pwm, uas tshuav tsawg kawg nkaus rau qhov kawg CNC machining los ntxuav. Nws txuag tau li ntawm 30% nyob rau hauv machining teev thiab ua ib feem muaj zog vim hais tias cov nplej ntws ntawm cov hlau ua raws li cov contour. Qhov ntawd yog hom txiaj ntsig uas koj tau txais los ntawm tus neeg muag khoom uas xav txog ob qho tib si casting thiab machining cov ntsiab lus.
Qhov Tsis Pom Zoo: Kev Saib Xyuas thiab Lub Neej
Ua tau zoo hlau roller yuav tsum tau tsim rau nws tag nrho lifecycle, tsis yog nws thawj installation. Qhov no txhais tau hais tias xav txog yuav ua li cas nws thiaj li yuav tswj tau. Puas muaj threaded qhov rau rubers? Puas yog txheej txheej txheej lossis plating rov ua dua? Rau cov menyuam chrome-plated, nws puas tuaj yeem raug stripped thiab rov plated tom qab xyoo ntawm hnav, los yog cov khoom siv hauv paus tsis sib haum nrog lub voj voog thib ob?
Cov ntaub ntawv yog ib feem ntawm qhov no. Ib tus neeg muag khoom ntseeg siab muab cov ntaub ntawv pov thawj, cov kab kos kho cua sov, thiab cov ntaub ntawv tshuaj xyuas. Thaum koj xav tau ib qho zoo tib yam hloov cov menyuam tsib xyoos tom qab, koj yuav tsum paub meej tias koj muaj dab tsi. Kuv khaws ib daim ntawv teev tag nrho ntawm cov txheej txheem tseem ceeb, thiab cov neeg muag khoom zoo tshaj plaws, zoo li qhov kuv tau hais txog, muab cov ntaub ntawv no yam tsis tau nug. Nws yog ib qho qhia tias lawv sawv tom qab lawv cov txheej txheem.
Thaum kawg, tsis ua hauj lwm tsom xam. Thaum tus menyuam ua tsis tiav-thiab lawv txhua tus ua thaum kawg-txoj kev uas nws tsis qhia ib zaj dab neeg. Spalling nyob rau hauv phau ntawv xov xwm bearing taw qhia rau qhov teeb meem overload los yog haum. Kev ntsuas kub ntawm qhov chaw qhia tias muaj teeb meem cua txias. Ib qho kev puas tsuaj loj tuaj yeem tshwm sim los ntawm qhov tsis zoo ntawm lub subsurface casting. Siv sijhawm los ua kom zoo tom qab kev tuag ntawm tus menyuam ua tsis tau zoo qhia txog tus qauv tsim ntawm ib qho tom ntej, kaw lub voj. Nws hloov pauv mus rau qhov chaw kawm, uas yog lub cim tiag tiag ntawm kev ua tau zoo, kev siv tes ua haujlwm hauv daim teb no.
