Thaum koj hnov 'rollformers ncej cov menyuam', feem ntau cov neeg tam sim ntawd pom tsuas yog cov menyuam nws tus kheej-lub tog raj kheej steel, tej zaum nrog qee cov kabmob. Qhov ntawd yog thawj qhov yuam kev. Hauv kev muaj tiag, nws yog qhov system. Qhov kev ua tau zoo hinges ntawm kev sib koom ua ke ntawm cov ncej hlau metallurgy, cov menyuam lub ntsej muag tiav thiab cov tawv tawv profile, thiab cov kabmob sib dhos lub siab ntev. Kuv tau pom ntau txoj haujlwm ua haujlwm tsuas yog rau cov menyuam OD specs, ces xav paub yog vim li cas lawv tau hnav ntxov ntxov lossis qhab nia ntawm cov profiles. Lub taub hau, feem ntau qhov kev xav tom qab, yog qhov uas muaj ntau yam kev ua tsis tiav. Nws tsis yog tus pin xwb; nws yog dynamically loaded tivthaiv.
Kev xaiv cov khoom tsis yog kev twv txiaj
Thaum ntxov ntawm kuv lub sijhawm ua haujlwm nrog cov kab rollform, peb muaj qhov teeb meem rov tshwm sim nrog ib qho tshwj xeeb rollformers ncej cov menyuam teeb siv los ua cov hlau muaj zog zoo. Cov chais, ua los ntawm tus qauv D2 cov cuab yeej hlau, tuav tau zoo, tab sis peb tau ntsib cov ncej deflection. Tsis tawg, tsuas yog khoov txaus los cuam tshuam qhov profile kam rau ua tom qab ob peb teev ntawm kev khiav. Qhov kev xav tau ib txwm xav tau lub taub loj dua, uas tsim ib qho kev tsim kho tshiab rau cov vaj tsev nyob.
Qhov kho tiag tiag los ntawm kev hloov khoom siv rau lub ncej nws tus kheej. Peb tau hloov los ntawm tus qauv 4140 steel mus rau ib qho kev sib zog ntawm 4340 alloy, ua haujlwm nrog tus neeg muag khoom uas nkag siab txog kev qaug zog. Qhov no tsis yog kev txiav txim siab los ntawm phau ntawv teev npe; Nws tau los ntawm kev txheeb xyuas cov qauv kev puas tsuaj thiab cov micro txav ntawm lub rooj zaum bearing. Qhov chaw zoo li Qingdao Qiangsenyuan Technology Co., Ltd. (QSY) muaj keeb kwm ntawm qhov no. Nrog rau ntau tshaj 30 xyoo nyob rau hauv casting thiab machining, lawv tau txais ib tug ncej rau ib tug hnyav-duty ncej roller tsis yog ib qho khoom lag luam tig bar xwb. Nws feem ntau yuav tsum yog forged los yog precision-cam khwb cia dawb paug los xyuas kom meej cov lis dej ntws kev taw qhia, ces machined rau exacting tolerances. Lawv ua hauj lwm nrog tshwj xeeb alloys xws li npib tsib xee-raws li alloys muaj feem xyuam rau ntawm no-qee zaum, rau huab ib puag ncig, koj yuav tsum tau saib tshaj tus qauv steel qib.
Qhov no ua rau lwm nuance: lub interface. Lub rooj zaum ntawm lub rooj zaum feem ntau tau hauv av, tab sis txoj kev hloov radii tseem ceeb heev. Lub kaum ntse ntse yog qhov kev ntxhov siab uas tos kom tsim kom muaj qhov pib tawg. Peb tau kawm kom qhia meej thiab tshuaj xyuas cov radii no meticulously. Nws yog ib qho kev nthuav dav me me ntawm daim duab uas ua rau muaj qhov sib txawv loj hauv lub sijhawm nruab nrab ntawm kev ua tsis tiav.
Qhov nyuaj yog qhov zoo dua Fallacy rau Rollers
Muaj cov lus dab neeg nthuav dav uas ua rau lub ntsej muag tawv tawv ntawm cov menyuam mus rau qhov max (hais tias, 65 HRC thiab siab dua) yuav cia li ua lub neej ntev tshaj plaws. Nws yog ib qho cuab yeej kim. Rau rollformers cov menyuam, tshwj xeeb tshaj yog cov txheej txheem ua ntej-coated los yog abrasive cov ntaub ntawv (xws li ib co galvanized steels), ib qho nyuaj heev nto yuav ua nkig. Hloov chaw ntawm kev hnav zoo nkauj, nws tuaj yeem nti lossis tawg, ua kom puas daim ntawv tam sim ntawd.
Kuv nco qab txog qhov project uas peb tab tom tsim ib qho txhuas-bronze alloy sawb. Cov khoom yog gummy. Peb thawj pawg ntawm rollers yog super-hardened. Lawv tsis hnav; lawv cia li thauj khoom nrog cov khoom, khaws cov hlau rau ntawm qhov chaw thiab tom qab ntawd imprinting tsis xws luag rov qab mus rau lub sawb. Cov tshuaj yog counterintuitive: peb siv ib tug me ntsis softer rau cov menyuam cov ntaub ntawv nrog ib tug polished, yuav luag zoo li daim iav tiav thiab ib tug tshwj xeeb nto kev kho mob kom txo tau galling. Tus nqi coj tau tswj los ntawm ib qho kev sib txawv-lubricity es tsis yog brute hardness xwb.
Qhov no yog qhov tshwj xeeb machining thiab cov peev txheej tiav tseem ceeb. Ib lub tuam txhab zoo li QSY, nrog nws qhov sib sib zog nqus CNC machining thiab plhaub pwm kev txawj ntse, tuaj yeem tsim cov chais nrog cov txheej txheem cua txias sab hauv (qhov tseem ceeb rau kev khiav ceev) thiab tswj cov txheej txheem. Lub peev xwm ua haujlwm nrog cov hlau tsis muaj steel lossis cobalt-raws li alloys qhib qhov rooj rau corrosive lossis high-temperature forming applications uas txheem carbon steel rollers tsis tuaj yeem kov.
Bearing Fit: Ua los yog tawg kam rau ua
Qhov no tej zaum yuav yog feem ntau tes-rau, grimy ib feem ntawm txoj hauj lwm, tab sis tau txais cov kabmob haum tsis ncaj ncees lawm ntawm a ncej roller kev sib dhos yuav nkim tag nrho koj cov haujlwm zoo ntawm cov ntaub ntawv. Nws tsis yog hais txog kev nias lub bearing mus rau ib tug ncej. Muaj kev xav txog thermal thiab kev txiav txim siab ntawm qhov chaw thauj khoom. Rau kev txhim kho cov kabmob ruaj khov, koj xav tau qhov kev cuam tshuam zoo uas txaus los tiv thaiv kev nkag tab sis tsis hnyav heev uas nws ua rau cov kabmob ntau dhau los yog cuam tshuam cov haiv neeg sab hauv.
Peb ib zaug sib sau ua ke ntawm cov txheej txheem tshiab ntawm cov shafts nrog cov lus qhia tau hais tias yog tus qauv haum. Nyob rau hauv lub load thiab ntawm kev khiav hauj lwm kub, lub ncej nthuav txaus los tsim ib tug me ntsis clearance. Qhov tshwm sim tsis yog kev puas tsuaj loj; nws yog ib qho tsis tu ncua, tsis tshua muaj kev vibration uas tshwm sim raws li kev hloov maj mam nthwv dej hauv cov khoom tsim. Siv peb hnub ntawm kev kuaj mob txhawm rau taug qab nws rov qab mus rau qhov kev txav mus los. Qhov kev kho tau hloov mus rau qhov kev xaiv haum raws li qhov ntsuas qhov ntev ntawm qhov ntsuas kub, tsis yog cov nqi luam tawm nominal xwb.
Rau cov kabmob vaj tse nyob rau hauv cov menyuam nws tus kheej, kev kam rau siab yog sib npaug. nruj dhau, thiab koj yuav raug khi thaum cov menyuam kub. xoob dhau lawm, thiab koj tau txais kev ua si uas txhais ncaj qha rau hauv daim ntawv tsis raug. Qhov no yog precision machining chaw. Nws tsis yog hais txog ntaus tus lej; Nws yog hais txog kev sib xws thoob plaws tag nrho cov txheej txheem rau cov kab ntau theem. Lub peev xwm los tuav qhov kaum (0.0001 ntiv tes) tsis tu ncua, raws li koj xav tau los ntawm lub caij nyoog CNC machining chaw muab kev pab, tsis yog sib tham ntawm no.
Kev sib koom ua ke thiab kev sim ntiaj teb tiag
Koj tuaj yeem muaj cov khoom zoo tshaj plaws ntawm tus kheej - lub tshuab ua haujlwm zoo kawg nkaus los ntawm cov khoom siv zoo tshaj plaws, cov menyuam nrog qhov zoo tagnrho hardness thiab tiav, thiab precision bearings - thiab tseem muaj qhov tsis ua haujlwm. Kev sib koom ua ke yog qhov tseem ceeb. Cov menyuam lubricated li cas? Puas yog nws muaj roj-ntim, kaw-rau-lub neej chav tsev (ntau tab sis muaj kev txwv kub), lossis nws puas muaj kev npaj rau cov roj tsis tu ncua? Qhov kev xaiv dictates lub internal tsim ntawm lub rollformers ncej cov menyuam.
Peb kawm qhov no ntawm cov kab hluav taws xob vov tsev siab ceev. Cov theoretical specs yog tag nrho. Tab sis nyob rau hauv kev xyaum, lub tshav kub buildup los ntawm kev nruam tsim ntawm 150 ko taw ib feeb yog ntau dua li qhov xav tau. Roj nyob rau hauv tus qauv bearings tsoo, ua rau overheating thiab qaug dab peg. Kev tsim kho tshiab koom nrog kev qhia cov menyuam nrog qhib cov kabmob tsim thiab kev sib koom ua ke ntawm cov roj nruab nrab hauv cov txheej txheem rollformer. Cov shafts lawv tus kheej xav tau hla cov roj hla dhau. Nws yog qhov kev npau suav phem rov qab uas yuav yooj yim dua yog tias daim ntawv thov qhov tseeb thermal load raug txiav txim siab los ntawm qhov pib.
Qhov no yog vim li cas prototyping thiab kuaj nyob rau hauv load yog irreplaceable. Ib tus neeg muag khoom uas tsis yog tsuas yog cov khoom siv xwb tab sis tuaj yeem qhia txog kev sib koom ua ke raws li cov khoom siv science thiab kev siv tshuab ua haujlwm ntxiv qhov txiaj ntsig zoo. Piv txwv li, paub tias lub plhaub pwm cam khwb cia rau cov menyuam tsis muaj peev xwm muab cov homogeneity zoo dua rau cov duab ntau dua li cov khoom tsim, los yog ib qho tshwj xeeb nickel-raws li alloy yog tsim nyog tus nqi rau nws thermal stability nyob rau hauv koj daim ntawv thov, los ntawm ntau caum xyoo nyob rau hauv pem teb, tsis yog ib daim ntawv muag khoom xwb.
Failure Analysis raws li cov cuab yeej kawm
Tsis txhob muab pov tseg ib qho ua tsis tiav rollformers cov menyuam los yog ncej tsis txiav nws qhib ua ntej. Kev tuag tom qab tuag yog qhov kev kawm zoo tshaj plaws. Kuv khaws ib daim duab ntawm cov khoom ua tsis tau zoo hauv kuv lub hoobkas. Ib tug ncej tau pom ib tug classic qaug zog tawg los ntawm ib tug machining cim nyob rau hauv ib tug uas tsis yog-tseem ceeb cheeb tsam - ib tug zaj lus qhia nyob rau hauv specifications tiav rau tag nrho cov ncej, tsis yog lub rooj zaum bearing. Lwm cov menyuam tau pom cov qauv coj txawv txawv tsuas yog nyob rau ntawm ib sab, taw qhia rau qhov tsis sib xws ntawm qhov sawv ntsug uas peb tsis tau ntes nrog peb cov ntsuas ntsuas.
Ib qho kev qhia tshwj xeeb tsis ua haujlwm cuam tshuam nrog cov menyuam uas tawg ncig ncig. Thawj qhov kev thuam tau mus rau cov khoom tsis xws luag. Metallurgical tsom xam, uas peb tau ua los ntawm ib qho chaw kuaj sab nraud (txawm tias qee cov tuam txhab ua ke zoo li QSY muaj lub peev xwm no hauv tsev muab lawv cov keeb kwm yav dhau los), pom tias cov khoom siv tau zoo. Cov qauv tawg taw qhia rau kev ntxhov siab ntau dhau. Lub hauv paus ua rau? Lub kaw lus hydraulic rau xauv cov menyuam rau ntawm lub ncej tau siv ntau lub siab tshaj li tsim, tsim kom muaj kev cuam tshuam zoo uas overstressed cov menyuam phab ntsa. Qhov kho yog qhov yooj yim siab regulator.
Cov kev paub dhau los no tsim cov txheej txheem tshwj xeeb tshaj pragmatic. Tam sim no, thaum xaj, kev sib tham tsis yog hais txog qhov ntev thiab cov khoom siv qib. Nws yog hais txog daim ntawv thov: tsim cov khoom, kab ceev, lubrication txoj kev, xav kom tonnage, thiab txij nkawm lub voj voog. Nws hloov cov khoom muag mus rau hauv kev sib koom tes engineering, uas yog li cas koj ua tiav kev ntseeg siab thiab tus nqi-zoo hauv kev ua haujlwm rollforming.
