1. Intsimbi ecinyiweyo kunye nobushushu
Uvavanyo lobulukhuni bentsimbi ecinyiweyo kunye nepholileyo isebenzisa ubukhulu becala i-Rockwell ubulukhuni bomvavanyi we-HRC.Ukuba izinto eziphathekayo zincinci kwaye isikali se-HRC asifanelekanga, isikali se-HRA sinokusetyenziswa endaweni yoko.Ukuba imathiriyeli ibhityile, i-Rockwell hardness scales engaphezulu ingasetyenziswa HR15N, HR30N, okanye HR45N.
2. Umphezulu wentsimbi eqinile
Kwimveliso yoshishino, ngamanye amaxesha ingundoqo ye-workpiece iyadingeka ukuba ibe nokuqina okulungileyo, ngelixa umphezulu kufuneka ube nobunzima obuphezulu kunye nokumelana nokugqoka.Kule meko, ukucima i-high-frequency quenching, i-carburization yeekhemikhali, i-nitriding, i-carbonitriding kunye nezinye iinkqubo zisetyenziselwa ukwenza unyango olunzima phezu kwendawo yokusebenza.Ubukhulu bomaleko wokuqina komphezulu ngokuqhelekileyo buphakathi kweemilimitha ezimbalwa kunye neemilimitha ezimbalwa.Kwiimathiriyeli ezinomaleko ongqindilili womphezulu wokuqina, izikali ze-HRC zinokusetyenziselwa ukuvavanya ukuqina kwazo.Kubunzima obuphakathi bokuqina kweentsimbi, i-HRD okanye izikali ze-HRA zingasetyenziswa.Kumaleko okuqina komphezulu obhityileyo, izikali zokuqina ze-Rockwell zomphezulu i-HR15N, HR30N, kunye ne-HR45N kufuneka zisetyenziswe.Kwimigangatho emincinci eqinile, i-micro Vickers tester hardness okanye i-ultrasonic hardness tester kufuneka isetyenziswe.
3. Intsimbi ene-anealed, intsimbi eqhelekileyo, intsimbi ethambileyo
Izinto ezininzi zetsimbi ziveliswa kwindawo ene-annealed or normalized state, kwaye ezinye iipleyiti zentsimbi ezigoqiweyo ezibandayo zikwahlelwa ngokwamanqanaba ahlukeneyo okufunxa.Uvavanyo lobulukhuni beentsimbi ezahlukeneyo ezifakwayo ngokuqhelekileyo zisebenzisa izikali ze-HRB, kwaye ngamanye amaxesha izikali ze-HRF zikwasetyenziselwa iipleyiti ezithambileyo nezincinci.Kwiipleyiti ezincinci, i-Rockwell hardness testers HR15T, HR30T, kunye ne-HR45T izikali kufuneka zisetyenziswe.
4. Intsimbi engenasici
Iimathiriyeli zetsimbi engacocekanga zihlala zibonelelwa kumazwe anje ngokufunxa, ukucima, ubushushu, kunye nesisombululo esiqinileyo.Imigangatho yeSizwe ichaza amaxabiso ahambelanayo aphezulu nasezantsi ubulukhuni, kunye novavanyo lobulukhuni ludla ngokusebenzisa i-Rockwell hardness tester HRC okanye izikali ze-HRB.Isikali se-HRB siya kusetyenziselwa i-austenitic kunye ne-ferritic steel stainless steel, isikali se-HRC se-Rockwell hardness tester siya kusetyenziselwa i-martensite kunye ne-precipitation eqinisa intsimbi engatyiwayo, kunye nesikali se-HRN okanye isikali se-HRT somvavanyi wobulukhuni be-Rockwell siya kusetyenziselwa intsimbi engenasici esincinci- iityhubhu ezinodonga kunye nezixhobo zeshiti ezinobunzima obungaphantsi kwe-1 ~ 2mm.
5. Intsimbi eyenziweyo
Uvavanyo lwe-Brinell hardness hardness luvame ukusetyenziselwa intsimbi ekhandiweyo, kuba i-microstructure yensimbi ekhutshiweyo ayifani ngokwaneleyo, kunye ne-Brinell hardness test indentation inkulu.Ke ngoko, uvavanyo lobulukhuni beBrinell lunokubonisa iziphumo ezibanzi ze-microstructure kunye neempawu zazo zonke iinxalenye zezinto.
6. Cast intsimbi
Izixhobo zentsimbi ephosiweyo zihlala ziphawulwa ngolwakhiwo olungalinganiyo kunye neenkozo ezirhabaxa, ngoko ke uvavanyo lobulukhuni beBrinell luyamkelwa ngokubanzi.Umvavanyi wobulukhuni be-Rockwell unokusetyenziselwa uvavanyo lokuqina kweminye imisebenzi yentsimbi.Apho kungekho ndawo yaneleyo kwicandelo elincinci lokugalela okuziinkozo kuvavanyo lobulukhuni beBrinell, isikali se-HRB okanye se-HRC sinokusoloko sisetyenziselwa ukuvavanya ubulukhuni, kodwa kungcono ukusebenzisa isikali se-HRE okanye se-HRK, kuba i-HRE kunye nezikali ze-HRK zisebenzisa i-3.175mm ububanzi beebhola zentsimbi, ezinokufumana ukufundwa kwe-avareji engcono kune-1.588mm ububanzi beebhola zentsimbi.
Izixhobo zentsimbi ezithambileyo ezithambileyo zihlala zisebenzisa i-Rockwell hardness tester HRC.Ukuba izinto eziphathekayo azilingani, idatha eninzi inokulinganiswa kwaye ixabiso eliphakathi lithathwe.
7. I-Sintered carbide (i-alloy eqinile)
Uvavanyo lobulukhuni bezinto eziluqilima ngokuqhelekileyo lusebenzisa kuphela isikali se-Rockwell sobulukhuni somvavanyi we-HRA.
8. Umgubo
Ixesha lokuposa: Jun-02-2023
