1.Dab tsi yog lub hauv paus ua rau ntug curling thiab tawg?
Khoom yam tseem ceeb: Tsis txaus plasticity thiab toughness ntawm steel kauj nws tus kheej; tshuaj muaj pes tsawg leeg cais; loj banding qauv; microscopic defects nyob rau hauv thawj slab.
Txheej Txheem Txheej Txheem:
Kev tsis zoo Annealing: Tsis txaus annealing kub los yog lub sij hawm, ua rau cov khoom nyuaj heev (siab hardness, tsawg elongation); uneven annealing, ua rau cov khoom tsis sib xws.
Tsis tsim nyog txo tus nqi: Kev txo qis tag nrho, ua rau muaj kev ua haujlwm hnyav; tsis txaus txo tus nqi nyob rau hauv qhov kawg pass, tsis ua zoo txhim kho ntug qauv.
Kev Tswj Tsis Txaus Siab: Ntau coiling lossis uncoiling nro, ua rau muaj zog tensile ntau dhau ntawm cov npoo.
Ntug Zoo: Microcracks, qhov khoob, los yog "ntug tsis xws luag" muaj nyob rau ntawm cov npoo ntawm cov khoom kub -rolled raw khoom, uas yog amplified thaum lub sij hawm txias dov.
Kev txias txias tsis sib xws: Cov cua txias ntau dhau los yog tsis sib xws tom qab dov lossis annealing ua rau muaj kev ntxhov siab.
Khoom siv thiab kev ua haujlwm Factors:
Roll Condition: Roll hnav, yob profile tsis zoo, ua rau muaj kev ntxhov siab ntawm cov npoo.
Tsis sib npaug winding: Tsis sib npaug ntawm cov hlau kauj, ua rau "ntauwd duab" lossis "loos coil," ua rau muaj kev ntxhov siab hauv zos.
Cov teeb meem shearing: Kev kho tsis raug ntawm qhov sib txawv ntawm qhov sib txawv ntawm cov hniav los yog dulling ntawm cov hniav ntug ua rau tawv tawv los yog burrs thaum shearing, dhau los ua cov kab nrib pleb.
2.Peb tuaj yeem tiv thaiv kev tawg los ntawm kev tswj cov khoom siv raw?
Kev soj ntsuam nruj: Ntug zoo thiab cov cuab yeej siv tshuab kuaj xyuas yog ua los ntawm cov khoom kub - dov raw khoom. Cov ntaub ntawv nyoos uas pom qhov tsis xws luag, tev tawm hnyav, lossis kev ua haujlwm tsis zoo raug tso tseg.
Composition Optimization: Kev sib txuas lus nrog steel mills yog tswj los kho cov tshuaj muaj pes tsawg leeg ntawm cov hlau (xws li C, Mn, thiab Si cov ntsiab lus) kom ua tau raws li cov txheej txheem tom ntej, yog li txhim kho nws cov yas thiab tawv.
3.Yuav ua li cas optimize cov txheej txheem?
Optimize cov txheej txheem annealing:
Xyuas kom txaus annealing kub thiab tuav lub sij hawm tso cai rau tag nrho recrystallization thiab rov qab los ntawm plasticity.
Siv tag nrho -hydrogen lossis siab -hydrogen muaj zog convection annealing los txhim kho qhov sib xws ntawm qhov cub kub thiab cua.
Rau cov khoom uas xav tau kev ua tau zoo, xav txog ntau dua - kev laus kev kho mob los yog qib (quenching thiab tempering dov) kom tso tawm kev ntxhov siab thiab txhim kho formability.
Tsim ib lub sijhawm txo kom tsim nyog:
Tsis txhob txo tus nqi ntau dhau hauv ib qho kev hla dhau. Nyob rau hauv ob peb lub xeem dhau los, siv tus nqi txo kom tsim nyog (piv txwv li, 3% -8%) kom "nkim" cov npoo thiab txhim kho ntug microstructure.
Rau siab -lub zog steel los yog nyias- ntsuas cov khoom, siv cov khoom txo qis dua.
Precisely tswj nro:
Siv qhov qis tshaj qhov ua tau coiling nro thaum ua kom cov dov thiab coiling stability.
Uncoiling, tshwj xeeb tshaj yog thawj ob peb lem, yuav tsum tau qeeb thiab du kom tsis txhob muaj kev ntxhov siab.
Tswj tus nqi cua txias: Siv qeeb txias tom qab annealing, los yog ua kom txias txias kom txo tau cov thermal stress.
4.Yuav ua li cas cov cuab yeej thiab nws txoj haujlwm yuav tsum tau tswj xyuas?
Roll Management:
Tsis tu ncua zom cov yob kom tswj tau qhov zoo yob profile, tshwj xeeb tshaj yog ua kom muaj kev hloov pauv ntawm ntug chamfers (yob npoo).
Siv lub siab tawv, hnav-tiv taus, siab- tawv tawv.
Xyuas kom Coiling Quality:
Kho cov cuab yeej nruab nrab kom paub meej cov coil winding zoo, tsis muaj stacking lossis xoob coils.
Siv lub tes tsho tsim nyog los yog mandrels los xyuas kom nruj inner coil winding.
Shearing Tool Maintenance:
Qhov no yog ib qho tseem ceeb tiv thaiv taw tes! Tsis tu ncua hloov thiab zom cov slitting shear hniav.
Precisely kho qhov sib txawv shear hniav (feem ntau 8% -12% ntawm cov khoom thickness). Qhov sib txawv me me heev tuaj yeem ua rau crushing, thaum loj heev qhov sib txawv yuav tsim burrs.
Xav txog kev siv cov disc txiav tsis ncaj - hniav txiav, lossis siv laser txiav kom smoother, kev ntxhov siab- txiav dawb.
5.Dab tsi yog daim ntawv tshuaj xyuas thiab cov lus teb ntsuas?
** Tshawb xyuas qhov txiav: ** Kov qhov txiav ntug nrog koj txhais tes. Puas muaj qhov ntse burrs lossis "notches"? → Tshawb xyuas/hloov cov hniav txiav.
** Tshawb xyuas qhov nro:** Nws puas ua lub suab "bang" thaum unwinding lossis rewinding? Lub yob yog nruj heev? → Txo qhov nro.
** Tshawb xyuas cov khoom siv: ** Puas yog qhov kev ntsuas hardness thiab elongation mus txog tus qauv? → Tshawb xyuas cov txheej txheem annealing.
** Tshawb xyuas ib puag ncig:** Kev ua haujlwm puas tau ua ntawm qhov kub thiab txias? → Ua kom sov lossis ua haujlwm ntawm qhov nrawm.
** Tshawb xyuas cov ntaub ntawv raw:** Txheeb xyuas lwm cov yob ntawm tib batch ntawm raw khoom kom pom tias lawv muaj teeb meem zoo sib xws? → Hu rau tus neeg muag khoom.