Lapho sihlola ubulukhuni bensimbi ye-carbon steel imigoqo enobulukhuni obuphansi, kufanele sikhethe isihloli sokuqina ngokunengqondo ukuze siqinisekise ukuthi imiphumela yokuhlolwa inembile futhi iyasebenza. Singacabanga ukusebenzisa isikali se-HRB sokuhlola ubulukhuni be-Rockwell.
Isikali se-HRB se-Rockwell hardness tester sisebenzisa i-indenter yebhola yensimbi enobubanzi obungu-1.588mm namandla okuhlola afanayo angu-100KG. Ibanga lokulinganisa lesikali se-HRB lisethwe ku-20-100HRB, elifanele ukuhlolwa kokuqina kwezinto eziningi ze-carbon steel round bar enobulukhuni obuphansi.
1.Uma i-carbon steel round bar icishiwe futhi inokuqina okuphezulu okungaba ngu-HRC40 - HRC65, kufanele ukhethe umhloli wokuqina we-Rockwell. I-Rockwell hardness tester ilula futhi iyashesha ukusebenza, futhi ingafunda ngokuqondile inani lokuqina, elifanele ukukala izinto zokuqina okuphezulu.
2.Kweminye imigoqo eyindilinga ye-carbon steel eye yaphathwa nge-carburizing, i-nitriding, njll., ubulukhuni bobuso buphezulu futhi ubulukhuni bomgogodla buphansi. Uma kudingekile ukukala ngokunembile ubulukhuni bobuso, umhloli wokuqina we-Vickers noma umhloli we-microhardness ungakhethwa. Ukuhlehliswa kokuhlolwa kokuqina kwe-Vickers kuyisikwele, futhi inani lokuqina libalwa ngokulinganisa ubude be-diagonal. Ukunemba kwesilinganiso kuphezulu futhi kungabonisa ngokunembile izinguquko zokuqina endaweni ebonakalayo.
3.Ngaphezu kwesilinganiso se-HRB se-Rockwell hardness tester, i-Brinell hardness tester ingase isetshenziselwe ukuhlola izinto zebha yensimbi eyindilinga enobulukhuni obuphansi. Lapho kuhlolwa imigoqo eyindilinga ye-carbon steel, i-indenter yayo izoshiya indawo enkulu yokuhlehlisa phezu kwento, engabonisa ngokugcwele nangokubanzi ubulukhuni obumaphakathi bento. Ngesikhathi sokusebenza komhloli wokuqina, i-Brinell tester hardness ayisheshi futhi kulula njenge-Rockwell hardness tester. Umhloli wokuqina we-Brinell isikali se-HBW, futhi ama-indenters ahlukene afana namandla okuhlola. Kumabha ayindilinga ensimbi ye-carbon enobunzima obuphansi ngokuvamile obuphansi, njengaleyo esesimweni esishubile, ubulukhuni ngokuvamile buba ngu-HB100 - HB200, futhi kungase kukhethwe umhloli wokuqina we-Brinell.
4.Ezindaweni eziyindilinga zensimbi ye-carbon enobubanzi obukhulu kanye nokuma okuvamile, abahloli bobulukhuni abahlukahlukene ngokuvamile bayasebenza. Nokho, uma ububanzi bebha eyindilinga buncane, bungaphansi kuka-10mm, umhloli wokuqina we-Brinell angase athinte ukunemba kokulinganisa ngenxa yokuhlehlisa okukhulu. Ngalesi sikhathi, kungakhethwa umhloli wokuqina we-Rockwell noma umhloli wokuqina we-Vickers. Usayizi wabo we-indenter mncane futhi ungakala ngokunembe kakhudlwana ubulukhuni bamasampuli anosayizi omncane.
5.Ngezinsimbi eziyindilinga ze-carbon steel ezimise ngendlela engavamile okunzima ukuzibeka ebhentshini lokusebenza lomhloli wokuqina ovamile ukuze kulinganiswe, kungakhethwa umhloli wokuqina ophathwayo, onjengomhloli wokuqina we-Leeb. Isebenzisa idivayisi yomthelela ukuze ithumele umzimba womthelela ngaphezulu kwento elinganiswayo, futhi ibala inani lokuqina ngokusekelwe kusivinini lapho umzimba womthelela ubuyela khona. Kulula ukuyisebenzisa futhi ingenza izilinganiso endaweni kuma-workpieces anomumo nosayizi abahlukene.
Isikhathi sokuthumela: Apr-14-2025
