1. Intsimbi ecinyiweyo neqinisiweyo
Uvavanyo lobunzima bentsimbi ecinyiweyo neqinisiweyo lusebenzisa ikakhulu isikali se-HRC sovavanyo lobunzima beRockwell. Ukuba izinto zincinci kwaye isikali se-HRC asifanelekanga, isikali se-HRA singasetyenziswa endaweni yoko. Ukuba izinto zincinci, izikali zobunzima beRockwell ezingaphezulu ze-HR15N, HR30N, okanye HR45N zingasetyenziswa.
2. Intsimbi eqinileyo engaphezulu
Kwimveliso yemizi-mveliso, ngamanye amaxesha isiseko sesixhobo somsebenzi siyadingeka ukuze sibe nokuqina okuhle, ngelixa umphezulu nawo kufuneka ube nokuqina okuphezulu kunye nokumelana nokuguguleka. Kule meko, ukucinywa rhoqo, i-chemical carburization, i-nitriding, i-carbonitriding kunye nezinye iinkqubo zisetyenziselwa ukwenza unyango lokuqina komphezulu kwisixhobo somsebenzi. Ubukhulu bomaleko wokuqina komphezulu buhlala buphakathi kweemilimitha ezimbalwa kunye neemilimitha ezimbalwa. Kwizinto ezineengqimba zokuqina komphezulu ezityebileyo, izikali ze-HRC zingasetyenziselwa ukuvavanya ubunzima bazo. Kwizinyithi zokuqina komphezulu ezinobukhulu obuphakathi, izikali ze-HRD okanye ze-HRA zingasetyenziswa. Kwizingqimba zokuqina komphezulu ezibhityileyo, izikali zokuqina komphezulu weRockwell ze-HR15N, HR30N, kunye ne-HR45N kufuneka zisetyenziswe. Kwizingqimba zokuqina komphezulu ezibhityileyo, kufuneka kusetyenziswe umvavanyi wokuqina we-micro Vickers okanye umvavanyi wokuqina we-ultrasonic.
3. Intsimbi eyongeziweyo, intsimbi eqhelekileyo, intsimbi ethambileyo
Izinto ezininzi zentsimbi ziveliswa zikwimeko eyomileyo okanye eqhelekileyo, kwaye ezinye iipleyiti zentsimbi ezigoqiweyo ezibandayo nazo zihlelwa ngokwemigangatho eyahlukeneyo yokubopha. Uvavanyo lobunzima beentsimbi ezahlukeneyo ezibotshiweyo ludla ngokusebenzisa izikali ze-HRB, kwaye ngamanye amaxesha izikali ze-HRF zikwasetyenziswa kwiipleyiti ezithambileyo nezincinci. Kwiipleyiti ezincinci, kufuneka kusetyenziswe izikali zobunzima beRockwell ze-HR15T, HR30T, kunye ne-HR45T.
4. Intsimbi engatyiwayo
Izinto zentsimbi engagqwaliyo zihlala zibonelelwa kwiimeko ezifana nokutsalwa, ukucinywa, ukufuthwa, kunye nesisombululo esiqinileyo. Imigangatho yesizwe ichaza amaxabiso obulukhuni aphezulu naphantsi ahambelanayo, kwaye uvavanyo lobulukhuni ludla ngokusebenzisa isikali sovavanyo lobulukhuni seRockwell HRC okanye iHRB. Isikali seHRB kufuneka sisetyenziselwe intsimbi engagqwali ye-austenitic kunye ne-ferritic, isikali seHRC seRockwell sisetyenziselwe intsimbi engagqwali ye-martensite kunye ne-precipitation, kwaye isikali seHRN okanye isikali seHRT seRockwell sisetyenziselwe iityhubhu zentsimbi engagqwali ezinodonga oluncinci kunye nezinto zephepha ezinobukhulu obungaphantsi kwe-1 ~ 2mm.
5. Intsimbi eyenziweyo
Uvavanyo lokuqina kobulukhuni beBrinell ludla ngokusetyenziselwa intsimbi exonxiweyo, kuba isakhiwo sentsimbi exonxiweyo asilingani ngokwaneleyo, kwaye ukubekwa kwe-indentation yovavanyo lobunzima beBrinell kukhulu. Ke ngoko, uvavanyo lokuqina kweBrinell lunokubonisa iziphumo ezipheleleyo zesakhiwo se-micro kunye neempawu zazo zonke iindawo zezinto.
6. Isinyithi esenziwe ngentsimbi
Izinto zesinyithi ezixotyulweyo zihlala zibonakaliswa yisakhiwo esingalinganiyo kunye neenkozo ezirhabaxa, ngoko ke uvavanyo lobunzima beBrinell luyasetyenziswa ngokubanzi. Isivavanyeli sobunzima beRockwell singasetyenziselwa uvavanyo lobunzima kwezinye izinto zokusebenza zesinyithi ezixotyulweyo. Apho kungekho ndawo yaneleyo kwicandelo elincinci le-fine grain casting yovavanyo lobunzima beBrinell, isikali seHRB okanye seHRC sinokusetyenziswa rhoqo ukuvavanya ubunzima, kodwa kungcono ukusebenzisa isikali seHRE okanye seHRK, kuba isikali seHRE kunye neHRK zisebenzisa iibhola zentsimbi ezinobubanzi obuyi-3.175mm, ezinokufumana ukufundwa okungcono komndilili kuneebhola zentsimbi ezinobubanzi obuyi-1.588mm.
Izinto zesinyithi eziqinileyo nezithambileyo zihlala zisebenzisa i-HRC yokuvavanya ubunzima beRockwell. Ukuba izinto azilingani, idatha emininzi ingalinganiswa kwaye ixabiso eliphakathi lithathwe.
7. I-sintered carbide (i-alloy eqinileyo)
Uvavanyo lobunzima bezinto eziqinileyo ze-alloy ludla ngokusebenzisa isikali se-HRA sovavanyo lobunzima beRockwell kuphela.
8. Umgubo
Ixesha lokuthumela: Juni-02-2023
