1.Vim li cas ntau- hla dov ib qho tseem ceeb ntawm kev tswj kev tawg?
Txo ib zaug - dhau deformation tsis kam: Kev faib tag nrho deformation hla ntau qhov dhau los ua rau me me deformations txhua zaus, ua rau muaj kev ntxhov siab me ntsis hauv cov khoom siv thiab ua rau nws tsis tshua muaj peev xwm ncav cuag nws qhov kev txwv.
Tso cai rau nruab nrab recrystallization (rau qee cov ntaub ntawv): Thaum lub sij hawm dov lossis nruab nrab ntawm kev hla, cov ntaub ntawv tau ua haujlwm nyuaj. Multi-dav dov, ua ke nrog nruab nrab annealing, tshem tawm cov tawv tawv, rov ua kom zoo dua qub, thiab npaj rau kev sib tw tom ntej ntawm siab -deformation dov.
Kev tswj xyuas zoo dua ntawm cov kab nrib pleb thiab kev ntxhov siab: Los ntawm maj mam kho qhov sib txawv ntawm qhov sib txawv thiab qhov nro ntawm ntau qhov kev sib tw, qhov ncaj thiab sab hauv kev ntxhov siab ntawm cov sawb tuaj yeem tswj tau ntau dua, tiv thaiv kev ntxhov siab hauv cheeb tsam uas tuaj yeem ua rau tawg.
Txhawb nqa microstructure refinement thiab homogenization: Qhov sib txuam deformation dhau ntau dhau los ua rau cov nplej zoo dua, zoo dua qub, pab txhim kho cov khoom siv tag nrho.
2.Dab tsi cuam tshuam qhov tsis xws luag hauv cov khoom?
Tsis zoo metallurgical zoo: Tsawg purity ntawm molten steel, uas tsis muaj -metallic inclusions (xws li oxides thiab sulfides). Cov kev sib tw nyuaj thiab nkig no ua zoo li "qhov txhab sab hauv" thaum dov, yooj yim ua cov ntsiab lus tawg.
Kev sib cais sib cais: Tsis sib npaug ntawm cov ntsiab lus xws li carbon thiab manganese nyob rau hauv nruab nrab cheeb tsam ntawm cov cam khwb cia hlau ua rau muaj zog hauv zos hardness thiab tsis zoo plasticity.
Ntug tsis xws luag: Ntug tawg, burrs, los yog "tev" thiab micro- tawg ntawm cov npoo ntawm kub- dov strips tau nrawm nrawm thaum lub caij txias dov.
3.Dab tsi yog qhov tshwm sim ntawm kev tsim cov txheej txheem tsis tsim nyog?
Kev txo qis tsis raug cai hauv txhua qhov kev hla: tshwj xeeb tshaj yog qhov txo qis hauv thawj qhov dhau los. Yog tias cov khoom tuaj (kub-rolled coil) muaj txheej tawv tawv lossis microcracks ntawm nws qhov chaw, qhov kev txo qis thawj zaug yuav ua rau lawv nthuav tawm sai heev. Rau qee qhov siab - lub zog steels uas yog rhiab rau qhov tsis zoo, thawj qhov kev txo qis yuav tsum tau maj mam maj mam.
Kev tswj nruj nruj:
Kev nruj ntau dhau: Qhov no yuav ua rau lub sawb ua rau lub zog tensile ntau dhau, ua rau nws yooj yim dua rau kev tawg thaum lub thickness txo, tshwj xeeb tshaj yog nyob rau ntawm ntug.
Kev tsis sib haum los yog tsis ruaj khov: Qhov no yuav ua rau lub sawb vibrate thaum dov, ua rau muaj kev ntxhov siab hauv zos.
Tsis zoo rolling lubrication:
Lub lubrication tsis txaus lossis kev ua haujlwm tsis zoo ntawm cov roj dov yuav ua rau muaj kev sib txhuam ntawm kev sib txhuam ntawm cov yob thiab cov sawb, nce dov quab yuam, deformation tsis sib xws, thiab muaj kev pheej hmoo siab ntawm kev tawg.
Lub lubrication tsis sib xws tuaj yeem ua rau lub hauv paus dov los yog overheating, ua rau muaj kev puas tsuaj rau saum npoo.
Cov yob tsis zoo: tsis sib xws yob hnav, pitting, lossis spalling yuav ncaj qha khawb lossis cuam tshuam rau ntawm daim kab xev.
Tsis txaus intermediate annealing: Rau cov khoom uas yuav tsum tau ib tug loj tag nrho txo tus nqi, yog hais tias intermediate annealing tsis ua nyob rau hauv lub sij hawm mus tshem tawm ua hauj lwm hardening, cov khoom yuav ua heev nkig, thiab tom qab dov yuav inevitably ua rau tawg.
4.Dab tsi cuam tshuam rau kev khiav hauj lwm thiab cov cuab yeej cuab tam muaj?
Tsis ruaj tsis khov threading thiab tus Tsov tus tw - kev ua haujlwm viav vias tuaj yeem ua rau hauv zos folding lossis bending loj ntawm cov sawb.
Kev ua haujlwm tsis zoo ntawm lub coiler ua rau cov npoo tsis sib xws thaum lub sij hawm sawb winding, ua kom muaj kev cuam tshuam loj ntawm cov txheej txheem shear uas yuav ua rau ntug "cracking" lossis "crushing".
5.Yuav ua li cas tiv thaiv kev tawg hauv ntau- dhau qhov txias dov?
**Raw Material Control:** nruj me ntsis tswj cov tshuaj muaj pes tsawg leeg, huv si, ntug zoo, thiab txhua yam khoom ntawm cov khoom kub- dov.
** Txhim kho cov txheej txheem dov:**
Txais yuav ib lub tswv yim ntawm "mob thawj kis, ruaj khov intermediate passes."
Kev tshawb fawb faib tus nqi txo rau txhua qhov dhau los raws li cov yam ntxwv ntawm qib steel.
Teem tsim nyog thiab ruaj khov rau pem hauv ntej thiab nram qab tensions.
** Ua kom cov txheej txheem Media:** Siv siab - cov roj dov ua haujlwm thiab xyuas kom cov tshuaj tsuag ua haujlwm kom zoo, muab cov roj txaus txaus thiab txawm tias lubrication.
** Kev Ua Haujlwm Zoo thiab Kev Saib Xyuas: ** Ua haujlwm zoo, tsis tu ncua tshuaj xyuas thiab zom cov yob, thiab xyuas kom cov khoom sib dhos raug.
** Kev kho cua sov yuav tsum tau: ** nruj me ntsis ua raws li cov txheej txheem annealing nruab nrab uas yuav tsum tau ua los ntawm cov txheej txheem kom soften cov khoom.