Dab tsi yog lub hardness ntawm DC04?
Lub hardness ntawm dc04 txias - rolled steel ntawv yog feem ntau qhia nyob rau hauv vickers hardness (hrb), nrog ib qho kev muaj li nram no:
Vickers Hardness (HV): Feem ntau 55-80 Hv (kuaj hauv qab 10 Kgf thauj khoom).
Rockwell Hardness (HRB): Feem ntau 50-70 HRB.
Qhov tseeb Hardness tus nqi yuav hloov kho me ntsis rau qee yam xws li cov chaw tsim khoom siv cov txheej txheem tswj, thiab feem ntau poob ua ntej, tab sis feem ntau poob rau hauv cov saum toj no ntau. Qhov ntau hardness sib tw nws cov yam ntxwv ua ib qho kev sib sib zog nqus hlau, kom muaj qee qhov kev siv zog ntawm cov txheej txheem, ua rau nws haum rau cov kev siv stamping nyuaj.
Yuav ua li cas lub hardness ntawm dc04 txias - rolled steel ntawv cuam tshuam rau nws cov khoom lag luam?
Lub hardness ntawm dc04 txias -}} rolled steel ntawv yog ncaj qha rau nws cov khoom siv (tshwj xeeb tshaj yog stamping kev ua haujlwm). Cov kev cuam tshuam tshwj xeeb yog raws li hauv qab no:
Sib npaug ntawm hardness thiab ploneity
DC04 muaj qhov tsis tshua muaj zog (HV 55-80, HRB 50-70). Qhov no tsis muaj zog no muab nws zoo heev yas dawb thiab ductility. Txo nyuaj txhais tau tias kev sib tw sib txuas lus tsis muaj zog tsis muaj zog, ua rau nws muaj kev cuam tshuam ntau dua rau cov rog sab nraud. Yog li ntawd, nws yog qhov tsim nyog rau stamping, khoov, thiab ncab cov qauv sib sib zog nqus ntawm cov vaj huam sib luag ntawm cov vaj huam sib sib nqus thiab khoom siv hauv lub tsev).
Muaj peev xwm thaum ua
Yog tias lub hardness dhau heev (ze rau qhov txwv sab sauv), cov khoom tawm ntawm cov txiaj ntsig zoo yuav ua rau me ntsis thiab nws cov plasticity yuav txo me ntsis. Qhov no yuav ua rau muaj kev cuam tshuam ua kom tsis txhob muaj zog thaum lub zog, thiab yuav tsum tau ua ntau dua rau cov chaw muaj kev ntxhov siab thiab kev pheej hmoo ntawm kev ua kom dhau. Yog tias lub hardness yog tsawg (ze rau qhov qis dua), cov khoom yuav tau yooj yim dua rau qhov chaw txom nyem me me ntawm cov txheej txheem tsis ruaj khov ntawm cov txheej txheem ua tiav, lossis tawm suab me ntsis thaum lub rooj sib tham tom ntej.
Nto zoo thiab tuag hnav
Txo nyuaj txo cov tuag hnav ris tsho thaum ua, txuas lub neej tuag. Tsis tas li ntawd, cov khoom siv zoo ua rau nws tsis tshua raug rau saum npoo tsis xws luag thiab muaj cov pob txha thiab muaj kev tswj hwm ua tiav. Qhov no ua rau nws tsim nyog tshwj xeeb rau qhov uas yuav tsum tau ua kom zoo nkauj (xws li cov vaj tse sab nrauv).
Tshaj tawm - kev ua tau zoo ruaj khov
Qhov kev sib txuam ntawm DC04 lub hardness yog qhov tseem ceeb: loj hloov pauv nyob rau thaj chaw sib txawv, muaj peev xwm ua rau muaj kev sib txawv hauv cov khoom sib txawv lossis kev cuam tshuam cov khoom lag luam seem. Yog li ntawd, nruj kev tswj hwm ntawm cov hardness yog qhov tseem ceeb heev thaum ntau lawm ua tau kev ua tau zoo.
Hauv cov ntsiab lus, DC04 lub hardness tsawg yog nws cov tseem ceeb kom zoo dua li kev sib sib zog nqus {1} qib kos duab. Kev ua kom muaj zog hnyav ua tau, kev ua haujlwm zoo, thiab qee qhov zoo, kom ntseeg tau tias nws cov kev haum rau cov khoom siv stamping nyuaj.