Xa uvavanya ubulukhuni beentsimbi zekhabhoni ezijikelezayo ezinobunzima obuphantsi, kufuneka sikhethe umvavanyi wobulukhuni ngokufanelekileyo ukuqinisekisa ukuba iziphumo zovavanyo zichanekile kwaye ziyasebenza. Singaqwalasela ukusebenzisa isikali se-HRB somvavanyi wobulukhuni be-Rockwell.
Umlinganiselo we-HRB we-Rockwell hardness tester usebenzisa i-indenter yebhola yensimbi kunye nobubanzi be-1.588mm kunye novavanyo oluhambelanayo lwe-100KG. Uluhlu lomlinganiselo wesikali se-HRB sisekwe kwi-20-100HRB, elungele ukuvavanywa kobunzima bezinto ezininzi ze-carbon steel bar ezingqukuva ezinobulukhuni obuphantsi.
1.Ukuba i-carbon iron bar round bar iye yacinywa kwaye inobunzima obuphezulu malunga ne-HRC40 - HRC65, kufuneka ukhethe i-Rockwell hardness tester. Umhloli wobulukhuni be-Rockwell kulula kwaye ukhawuleza ukusebenza, kwaye unokufunda ngokuthe ngqo ixabiso lobunzima, elilungele ukulinganisa izinto ezinobunzima obuphezulu.
2.Kweminye imivalo yentsimbi yekhabhoni ejikelezileyo ephathwe nge-carburizing, i-nitriding, njl., ubunzima bomphezulu buphezulu kwaye ubulukhuni obuphambili buphantsi. Xa kuyimfuneko ukulinganisa ngokuchanekileyo ubunzima bomhlaba, i-Vickers tester hardness okanye i-microhardness tester ingakhethwa. I-indentation yovavanyo lwe-Vickers yobunzima buyisikwere, kwaye ixabiso lobunzima libalwa ngokulinganisa ubude be-diagonal. Ukuchaneka kokulinganisa kuphakamileyo kwaye kunokubonisa ngokuchanekileyo utshintsho lobunzima kwizinto eziphathekayo.
3.Ngaphezu komlinganiselo we-HRB we-Rockwell hardness tester, i-Brinell hardness tester ingasetyenziselwa ukuvavanya i-low-hardness carbon steel bar izinto ezijikelezayo. Xa uvavanya imivalo yentsimbi yekhabhoni ejikelezayo, i-indenter yayo iya kushiya indawo enkulu yokufakelwa kumphezulu wezinto eziphathekayo, ezinokubonisa ngokubanzi kunye nokubonakalisa ubunzima obuphakathi kwezinto. Ngexesha lokusebenza komvavanyi wobulukhuni, umvavanyi wobulukhuni beBrinell akakhawulezi kwaye kulula njengokuvavanya ubulukhuni beRockwell. Umvavanyi wobulukhuni be-Brinell sisikali se-HBW, kunye ne-identers ezahlukeneyo zihambelana namandla ovavanyo. Kwimivalo yentsimbi yekhabhoni ejikelezileyo enobulukhuni obuphantsi ngokubanzi, njengaleyo ikwimeko edibeneyo, ubunzima buhlala bujikeleze i-HB100 - HB200, kwaye umvavanyi wobulukhuni beBrinell unokukhethwa.
4.Kwiintsimbi zekhabhoni ezijikelezileyo ezinobubanzi obukhulu kunye nemilo eqhelekileyo, abavavanyi bobulukhuni abahlukeneyo basebenza ngokubanzi. Nangona kunjalo, ukuba ububanzi bebha ejikelezileyo buncinci, obungaphantsi kwe-10mm, umvavanyi wobulukhuni beBrinell unokuchaphazela ukuchaneka komlinganiselo ngenxa ye-indentation enkulu. Ngeli xesha, i-Rockwell hardness tester okanye iVickers tester yokuqina inokukhethwa. Ubungakanani be-indenter yabo incinci kwaye inokulinganisa ngokuchanekileyo ngakumbi ubulukhuni beesampulu ezinobungakanani obuncinci.
5.Kwimivalo ye-carbon steel round bars enzima ukuyibeka kwi-workbench ye-hardness tester eqhelekileyo yokulinganisa, i-hardness tester ephathekayo, efana ne-Leeb hardness tester, inokukhethwa. Isebenzisa isixhobo sempembelelo ukuthumela umzimba wempembelelo kumphezulu wento elinganiswayo, kwaye ibala ixabiso lobunzima ngokusekelwe kwisantya apho umzimba wempembelelo ubuyela khona. Kulula ukusebenza kwaye inokwenza imilinganiselo kwisiza kwizinto zokusebenza zeemilo ezahlukeneyo kunye nobukhulu.
Ixesha lokuposa: Apr-14-2025
