Cov txheej txheem txias dov ntawm txias- dov puag ncig cov raj yog cov kauj ruam tseem ceeb hauv kev txiav txim siab qhov tseeb, qhov zoo ntawm qhov chaw, thiab cov khoom siv kho tshuab ntawm cov raj. Peb qhov tseem ceeb yuav tsum tau saib xyuas tshwj xeeb: qhov ruaj khov ntawm qhov chaw, kev tiv thaiv thiab kev tswj xyuas qhov chaw, thiab kev tswj kev ntxhov siab. Cov no tuaj yeem muab faib ua rau rau lub ntsiab lus tseem ceeb hauv qab no.
1. Dimensional Accuracy Control: Zam kev zam dhau thiab ua kom muaj kev sib raug zoo
Lub hom phiaj tseem ceeb ntawm kev dov txias yog dov lub raj mus rau lub hom phiaj sab nraud thiab phab ntsa tuab. Kev tswj tsis zoo ntawm qhov ntev yuav ncaj qha ua rau cov khoom tiav tsis lees paub. Peb lub ntsiab lus tseem ceeb yuav tsum tau saib xyuas tshwj xeeb:
Roll Gap thiab Pressure Calibration
Cov teeb meem: Ntau qhov sib txawv ntawm qhov sib txawv (ua rau lub thickness ntawm sab nraud) los yog me me dhau (ua rau ib txoj kab uas hla sab nraud), thiab tsis sib xws (ua rau cov phab ntsa tuab ntawm ib sab thiab cov phab ntsa nyias nyias ntawm lwm qhov). Kev daws: Ua ntej dov, qhov sib txawv ntawm qhov yob yuav tsum tau ntsuas siv "tus qauv qauv raj" kom ntseeg tau tias qhov sib txawv ntawm qhov tsawg dua lossis sib npaug ntawm 0.01mm. Tom qab dov txhua 100 lub raj, lub taub sab nraud yog saib xyuas hauv lub sijhawm tiag tiag siv "online diam gauge." Yog hais tias qhov sib txawv tshaj ± 0.05mm, lub tshuab yog tam sim ntawd nres thiab yob lub siab hloov kho kom ntseeg tau tias qhov sib xws ntawm tag nrho cov batch.
Tension Stability Control
Cov teeb meem: kev nruj me ntsis (cov hlab ntsha tuaj yeem khoov, ovality tsis kam ua siab ntev, thiab roundness yuav siab tshaj 0.8% ntawm txoj kab uas hla); nruj heev (cov hlab ntsha tuaj yeem ncav cuag nyias, ua rau cov phab ntsa nyias nyias thiab txawm tias "caj dab" tawg).
Kev daws: Teem kom haum raws li cov khoom siv raj thiab cov lus qhia tshwj xeeb (feem ntau 10-30MPa rau cov hlau me me thiab 30-50MPa rau cov hlau muaj zog). Lub "nruj sensor" muab cov lus qhia nruj ntawm lub sijhawm tiag tiag, thiab lub servo lub cev muaj zog hloov kho qhov nro kom ntseeg tau tias qhov sib txawv ntawm qhov nro tsawg dua lossis sib npaug li ± 5%. Rolling Pass Allocation
Teeb meem: Ntau dhau deformation nyob rau hauv ib qho dhau los (tshaj 20%) tuaj yeem ua rau "dov tawg" lossis "wrinkles" ntawm cov yeeb nkab nto. Tsawg dhau lawm (kev sib zog deformation) tuaj yeem ua rau kev ua hauj lwm tom qab hardening thiab txo cov yeeb nkab toughness.
Kev daws: Tsim ib txoj kev npaj hla raws li cov khoom siv plasticity. Tsawg- carbon steel (xws li Q235) tuaj yeem dov hauv 3-5 hla, nrog ib qho deformation ntawm 15%-20%. High-strength steel (xws li Q275) yuav tsum tau 5-8 kis, nrog ib tug deformation ntawm 10% -15%, maj mam ua tiav qhov xav tau loj. II. Kev Tswj Xyuas Qhov Zoo: Tsis txhob muaj qhov tsis xws luag thiab ua kom tiav kev ua tiav
Txias- cov raj dov muaj qhov yuav tsum tau muaj qhov zoo ntawm qhov chaw (piv txwv li, cov tsheb thauj mus los yuav tsum muaj Ra Tsawg dua lossis sib npaug li 3.2μm). Tsis muaj kev saib xyuas kom zoo thaum lub sij hawm dov tuaj yeem ua tau yooj yim ua rau muaj qhov tsis xws luag:
Roller Surface Cleanliness thiab Hnav
Teeb meem: Roj thiab nplai ntawm cov menyuam nto (uas nias rau hauv lub raj nto, ua "indentations" lossis "pitting"); Cov menyuam hnav tom qab siv sijhawm ntev - siv sijhawm ntev (ua rau "s khawb" ntawm lub raj nplaim thiab ua kom qhov roughness rau Ra Ntau dua lossis sib npaug li 6.3μm).
Kev daws: So cov menyuam nto nrog cawv so ua ntej dov kom ntseeg tau tias nws tsis muaj impurities. Tshawb xyuas cov menyuam hnav tom qab txhua 500 lub raj dov. Yog hais tias qhov saum npoo roughness tshaj Ra 0.8μm, hloov los yog re- txhuam cov menyuam tam sim ntawd. Raw Material Deg Pretreatment
Teeb meem: tsis tiav pickling ntawm raw cov ntaub ntawv ( residual oxide nplai rau ntawm qhov chaw, uas ntog tawm thaum dov, ua rau "qhov" ntawm cov yeeb nkab nto); tsis tiav degreasing (cov roj seem ntawm qhov chaw, uas carbonizes ntawm qhov kub thiab txias thaum dov, tsim "dub me ntsis").
Kev daws: Ua ntej dov, ua piv txwv cov khoom siv raw khoom kom ntseeg tau tias nws tsis muaj oxide nplai thiab roj (siv cov ntaub qhwv dawb so kom ntseeg tau tias tsis muaj cov xim dub). Yog tias kev kho ua ntej pom tias tsis txaus siab, rov-pickling thiab degreasing yuav tsum tau tiv thaiv cov khoom tsis tsim nyog los ntawm kev nkag mus rau hauv cov txheej txheem dov.
Rolling Lubrication
Cov teeb meem: cov roj nplua nyeem tsis txaus lossis hom tsis tsim nyog (kev sib txhuam ntau ntxiv ntawm cov yeeb nkab thiab cov chais, yooj yim ua rau "s khawb" ntawm qhov chaw); Cov roj nplua nyeem ntau dhau ua rau kev tu tom ntej nyuaj thiab cuam tshuam rau qhov chaw tiav. Kev daws: Xaiv ib qho tshwj xeeb txias dov lubricant raws li cov khoom siv (cov roj ntxhia rau cov hlau me me, siab siab rau cov hlau tsis muaj steel). Siv cov roj nplua nyeem sib npaug siv cov tshuaj tsuag, ua kom muaj kev pab ntawm 5-10g / m². Tsis tas li ntawd, tswj lub dov ceev (feem ntau 5-15m / min) los tiv thaiv lubricant degradation vim qhov kub thiab txias.
III. Tswj Rolling Stress thiab Deformation: Tsis txhob sib tsoo thiab ua kom cov cuab yeej cuab tam
Txias dov yog ib hom "kev ua haujlwm txias," uas ua rau kev ua haujlwm hnyav thiab kev ntxhov siab sab hauv. Kev tswj tsis raug tuaj yeem yooj yim ua rau tawg lossis tsis sib xws ntawm cov khoom siv hauv cov yeeb nkab.
Intermediate Annealing Timing thiab Parameters
Teeb meem: Annealing tsis ua raws li lub sijhawm (tom qab 2-3 dov dhau, cov yeeb nkab hardness nce siab tshaj HB180, ua rau dov ntau dua rau qhov ntev ntawm qhov tawg); Annealing kub yog qis dhau (hauv qab 600 degree, kev ntxhov siab sab hauv tsis raug tshem tawm tag nrho, thiab tom qab dov tuaj yeem ua rau deformation). Kev daws: Ua qhov nruab nrab annealing tom qab txhua txhua 2-3 dov hla rau cov hlau tsis muaj carbon, thiab tom qab txhua txhua 1-2 dov hla rau cov hlau muaj zog. nruj me ntsis tswj qhov kub ntawm annealing (650-700 degree) thiab tuav lub sij hawm (1-2 teev) kom ntseeg tau tias lub hardness ntawm cov yeeb nkab poob qis dua HB120 tom qab annealing thiab lub toughness yog rov qab.
Rolling ceev thiab txias
Teeb meem: Ntau dhau ntawm dov ceev (ntau tshaj 15m / min, ua rau muaj kev sib txhuam ntau dhau ntawm cov yeeb nkab thiab cov yob, nrog rau qhov kub thiab txias tshaj 100 degree, ua rau "thermal work hardening" thiab cov khoom tsis sib xws); tsis muaj lub tshuab cua txias (kub sib sau ua ke, nce yob kub, thiab kev pheej hmoo ntawm "thermal hnav").
Kev daws: Teeb qhov ceev raws li cov yeeb nkab tshwj xeeb (5-10m / min rau nyias- cov kav dej, 10-15m / min rau cov kav dej tuab). Siv cov dej txias txias kom txias cov yob thiab cov yeeb nkab, kom ntseeg tau tias cov yeeb nkab kub qis dua los yog sib npaug li 50℃thaum dov los tiv thaiv thermal deformation. Cov khoom xa tuaj zoo soj ntsuam
Teeb meem: Cov teeb meem sab hauv ntawm cov khoom siv raw (xws li looseness lossis inclusions) tuaj yeem nthuav dav thaum dov, ua rau delamination los yog tawg hauv cov yeeb nkab, ua rau nws muaj kev cuam tshuam rau kev xau thaum kuaj hydrostatic tom ntej.
Kev daws: Ua ntej dov, ua eddy tam sim no lossis kuaj ultrasonic ntawm cov khoom siv raw los txheeb xyuas qhov tsis xws luag. Rau cov kav dej tseem ceeb (xws li siab - cov kav dej siab), 100% kev tshuaj xyuas yuav tsum tau ua kom ntseeg tau tias cov khoom siv raw tsis muaj qhov tsis xws luag ua ntej nkag mus rau hauv cov txheej txheem dov.
IV. Cov cuab yeej siv thiab kev ua haujlwm tshwj xeeb: zam kev sib tsoo thiab ua kom ruaj khov
Ntxiv nrog rau cov txheej txheem tsis, cov cuab yeej siv thiab kev ua haujlwm tshwj xeeb tuaj yeem cuam tshuam cov txiaj ntsig dov. Ob lub ntsiab lus tseem ceeb yuav tsum tau saib xyuas:
Cov khoom siv tu txhua hnub
Teeb meem: Hnav ntawm cov menyuam bearings (ua rau cov yob tsis ruaj khov thiab cov tsos ntawm cov qhab nia hauv cov yeeb nkab); xoob xaim system (ua rau dov ceev hloov pauv thiab cov phab ntsa tsis sib xws). Kev daws: Xyuas cov menyuam bearing clearance (yuav tsum tsawg dua los yog sib npaug rau 0.02mm) thiab kis tau tus mob meshing ua ntej pib lub tshuab txhua hnub. Lubricate thiab tswj cov khoom siv txhua lub lim tiam. Yog tias pom muaj suab nrov txawv txav lossis kev co, tam sim ntawd kaw lub tshuab rau kev tshuaj xyuas kom tsis txhob ua haujlwm nrog qhov teeb meem.
Kev txawj ua haujlwm
Teeb meem: Cov neeg ua haujlwm tsis muaj kev paub txog kev hloov kho cov txheej txheem (piv txwv li, kev hloov kho ntau dhau ntawm cov yob siab thaum qhov txawv txav tshwm sim, ua rau "dhau- dov" ntawm cov yeeb nkab thiab cov phab ntsa tuab). Cov txheej txheem teb thaum muaj xwm txheej tsis txaus (piv txwv li, tsis tuaj yeem kaw lub tshuab tam sim ntawd thaum muaj khawb nto, ua rau cov kav dej tsis zoo).
Kev daws: Muab kev cob qhia ua ntej- ua haujlwm rau cov neeg ua haujlwm, xav kom lawv paub txog kev sib raug zoo ntawm "dimensional deviation thiab parameter adjustment" (piv txwv li, yog tias sab nraud txoj kab uas hla yog 0.1mm loj dhau, txo cov yob siab los ntawm 5MPa). Tsim cov phiaj xwm xwm txheej ceev uas qhia meej meej txog cov txheej txheem kaw rau qhov tsis xws luag thiab qhov sib txawv ntawm qhov sib txawv los tiv thaiv kev poob ntxiv.