Uma sihlola ubulukhuni bezinsimbi zensimbi yekhabhoni ezinobulukhuni obuphansi, kufanele sikhethe umhloli wobulukhuni ngokufanele ukuqinisekisa ukuthi imiphumela yokuhlolwa inembile futhi iyasebenza. Singacabanga ukusebenzisa isikali se-HRB somhloli wobulukhuni waseRockwell.
Isikali se-HRB sesihloli sokuqina kwe-Rockwell sisebenzisa i-indenter yebhola lensimbi enobubanzi obungu-1.588mm kanye namandla okuhlola afanayo angu-100KG. Ububanzi bokulinganisa besikali se-HRB bubekwe ku-20-100HRB, okufanelekela ukuhlolwa kokuqina kwezinto eziningi zebha eyindilinga yensimbi yekhabhoni enobunzima obuphansi.
1. Uma ibha eyindilinga yensimbi yekhabhoni icishiwe futhi inobulukhuni obuphezulu obungaba yi-HRC40 – HRC65, kufanele ukhethe umhloli wobulukhuni beRockwell. Umhloli wobulukhuni beRockwell kulula futhi uyashesha ukuwusebenzisa, futhi ungafunda ngqo inani lobulukhuni, elifanele ukukala izinto zobulukhuni obuphezulu.
2. Kweminye imigoqo eyindilinga yensimbi yekhabhoni ephathwe nge-carburizing, i-nitriding, njll., ubulukhuni bomphezulu buphakeme kanti ubulukhuni obuphakathi buphansi. Uma kudingeka ukukala ubulukhuni bomphezulu ngokunembile, kungakhethwa umhloli wobulukhuni be-Vickers noma umhloli wobulukhuni be-micro. Ukufakwa kwesivalo kokuhlolwa kobulukhuni be-Vickers kuyisikwele, futhi inani lobulukhuni libalwa ngokulinganisa ubude obuqondile. Ukunemba kokulinganisa kuphakeme futhi kungabonisa ngokunembile izinguquko zobulukhuni ebusweni bezinto ezibonakalayo.
3.Ngaphezu kwesikali se-HRB sesihloli sokuqina kweRockwell, isihloli sokuqina kweBrinell singasetshenziswa futhi ukuhlola izinto zebha yensimbi yekhabhoni enobunzima obuphansi. Lapho kuhlolwa imigoqo eyindilinga yensimbi yekhabhoni, isihlonzi sayo sizoshiya indawo enkulu yokugoba ebusweni bezinto, okungabonisa ngokuphelele nangokuphelele ubulukhuni obujwayelekile bezinto. Ngesikhathi sokusebenza kwesihloli sokuqina, isihloli sokuqina kweBrinell asisheshi futhi silula njengesihloli sokuqina kweRockwell. Isihloli sokuqina kweBrinell siyisilinganiso se-HBW, futhi izihlonzi ezahlukene zihambisana namandla okuhlola. Kumigoqo eyindilinga yensimbi yekhabhoni enobunzima obuphansi ngokuvamile, njengaleyo esesimweni esifakwe emanzini, ubulukhuni buvame ukuba cishe yi-HB100 - HB200, futhi isihloli sokuqina kweBrinell singakhethwa.
4. Kumabha ayindilinga ensimbi yekhabhoni anobubanzi obukhulu nesimo esijwayelekile, ngokuvamile kusebenza abahloli bobulukhuni abahlukahlukene. Kodwa-ke, uma ububanzi bebha eyindilinga buncane, njengangaphansi kuka-10mm, umhloli wobulukhuni beBrinell angathinta ukunemba kokulinganisa ngenxa yokugoba okukhulu. Ngalesi sikhathi, umhloli wobulukhuni beRockwell noma umhloli wobulukhuni beVickers angakhethwa. Usayizi wabo we-indenter mncane futhi ungalinganisa ngokunembile ubulukhuni bamasampula amancane.
5. Ngemigoqo eyindilinga yensimbi yekhabhoni engaguquki okunzima ukuyibeka ebhentshini lokusebenza lomhloli wobulukhuni ojwayelekile ukuze kulinganiswe, umhloli wobulukhuni ophathwayo, njengomhloli wobulukhuni weLeeb, ungakhethwa. Isebenzisa idivayisi yokuthinta ukuthumela umzimba wokuthinta ebusweni bento elinganiswayo, futhi ibala inani lobulukhuni ngokusekelwe esivinini umzimba wokuthinta obuyela ngaso emuva. Kulula ukuyisebenzisa futhi ingenza izilinganiso endaweni yokusebenza ezicucwini zobukhulu nobukhulu obuhlukene.
Isikhathi sokuthunyelwe: Ephreli-14-2025
