1.Vim li cas txias- dov coils tsis tsim nyog siv los ua cov hniav hauv cov tshuab pub noj?
Kev hnav tsis txaus (core tsis muaj zog)
Kev ua hauj lwm scenario: Cov hniav tig ntawm kev kub ceev, rov cuam tshuam, txiav, thiab sib tsoo nyuaj nplej thiab straw, thiab tej zaum yuav muaj me me ntawm cov xuab zeb thiab pob zeb.
Cov khoom yuav tsum muaj: Cov tawv tawv heev thiab tag nrho cov hnav tsis kam yuav tsum tau ua kom ntev kev pab cuam lub neej.
Tsis txaus toughness, prone rau brittle fracture (kev nyab xeeb txaus ntshai)
Cov xwm txheej ua haujlwm: Cov hniav tuaj yeem cuam tshuam rau cov khoom siv hlau txawv teb chaws (xws li rau tes, txiv ntseej) lossis pob zeb tawv sib xyaw hauv cov khoom noj.
Cov khoom yuav tsum tau muaj: Yuav tsum tau zoo toughness (tshuaj toughness) kom nqus lub zog thiab tiv thaiv cov hniav los ntawm chipping los yog tawg. Flying fragments ua rau muaj kev nyab xeeb loj heev.
2.Yuav ua li cas kev khwv nyiaj txiag txias -rolled coil?
Cov hniav ua los ntawm cov khaub thuas- dov coils muaj lub neej luv luv, thiab tag nrho cov nqi (cov nqi them nqi + kev ua haujlwm + kev ua haujlwm tsis txaus) tshwm sim los ntawm kev poob qis rau kev hloov pauv ntau dua li ntawm kev siv cov cuab yeej tshaj lij, uas muaj ntau dua - lub sijhawm yuav khoom tab sis lub neej ntev dua ob peb zaug.
3.Dab tsi yog qhov kev xaiv cov khoom siv zoo rau cov hniav grinder?
High-cov cuab yeej carbon steel (xws li T7, T8): siab hardness thiab zoo hnav tsis kam tom qab quenching, tab sis kuj tsis zoo toughness.
Caij nplooj ntoos hlav steel (feem ntau siv thiab classic xaiv)
Qib Qib: 65Mn. Qhov no yog cov khoom siv dav tshaj plaws rau cov hniav crusher.
Qhov zoo: muaj manganese (Mn), uas ua rau muaj zog hardenability. Tom qab quenching thiab nruab nrab -kub tempering, nws ua tau zoo elasticity, toughness, thiab siab hardness, zoo kawg nkaus sib npaug hnav tsis kam thiab cuam tshuam. Tus nqi kuj tseem tsim nyog.
Alloy cuab yeej steel / hnav-resistant steel:
Piv txwv li: 6CrW2Si, Cr12MoV, los yog mob siab rau hnav-cov hlau tsis xeb hlau (xws li Durax series, JFE EH series, thiab lwm yam).
Qhov zoo: muaj cov ntsiab lus alloying xws li chromium (Cr), tungsten (W), thiab molybdenum (Mo), muab kev hnav zoo dua, tawv tawv (lub peev xwm los tuav hardness ntawm qhov kub siab), thiab toughness. Siv rau hauv siab- kawg lossis hnyav- lub luag haujlwm crushers.
4.Dab tsi yog vim li cas vim li cas txias - dov coils tsis tsim nyog thiab yuav tsum tsis txhob siv los tsim cov hniav ua haujlwm rau cov khoom noj khoom haus?
Cov ntsiab lus tseem ceeb rau cov hniav yog "kev hnav tsis kam" thiab "kev cuam tshuam", uas xav tau cov ntaub ntawv tshwj xeeb (xws li 65Mn caij nplooj ntoos hlav steel) thiab cov txheej txheem kev kho cua sov. Txias-rolled coils tsis tuaj yeem ua tau raws li ob qho ntawm cov kev cai tseem ceeb no.
5.Dab tsi yog qhov kev pheej hmoo ntawm kev siv txias- dov coils los tsim cov hniav ua haujlwm rau cov khoom noj khoom noj?
Kev siv cov khoom txias-rolled coils los ua lossis tsim cov hniav tsis zoo yuav ua rau cov khoom siv qis qis (hloov hloov), nce nqi tag nrho, thiab muaj kev nyab xeeb loj heev ntawm cov hniav tawg thiab ya tawm.