Ama-rolling bearings ayizingxenye eziyinhloko ezisetshenziswa kabanzi kwezobunjiniyela bemishini, futhi ukusebenza kwawo kuthinta ngqo ukuthembeka kokusebenza komshini wonke. Ukuhlolwa kobulukhuni bezingxenye zokuthwala ezigoqayo kungenye yezinkomba zokuqinisekisa ukusebenza nokuphepha. Izindinganiso Zomhlaba Wonke ze-ISO 6508-1″ Izindlela Zokuhlola Ubulukhuni Bezingxenye Zokuthwala Ezigoqayo” zichaza izidingo zobuchwepheshe zokuhlolwa kobulukhuni bezingxenye, okuhlanganisa okuqukethwe okulandelayo:
1. Izidingo zobulukhuni zokuthwala izingxenye ngemuva kokushisa ；
1） Insimbi ephethe i-chromium enekhabhoni ephezulu (uchungechunge lwe-GCr15):
Ubulukhuni ngemva kokushisa ngokuvamile buyadingeka ukuthi bube sebangeni eliphakathi kuka-60 ~ 65 HRC (isikali sobunzima beRockwell C)；
Ubulukhuni obuncane akufanele bube ngaphansi kuka-60 HRC; ngaphandle kwalokho, ukumelana nokuguguleka ngeke kwanele, okuholela ekugugulekeni kwasekuqaleni；
Ukuqina okuphezulu akufanele kudlule ama-HRC angu-65 ukuze kugwenywe ukuphuka ngokweqile kwezinto, okungase kubangele ukuphuka ngaphansi komthwalo wokushayisana.
2） Izinto zokusebenza ezikhethekile (njengensimbi ethwala i-carburised, insimbi ethwala ukushisa okuphezulu):
Insimbi yokuthwala i-carburised (njenge-20CrNiMo): Ubulukhuni besendlalelo se-carburised ngemva kokushisa ngokuvamile buyi-58~63 HRC, kanti ubulukhuni be-core buphansi kakhulu (25~40 HRC), okulinganisela ukumelana nokuguguleka kwendawo kanye nokuqina kwe-core；
Insimbi ethwala ukushisa okuphezulu (njenge-Cr4Mo4V): Ngemva kokushisa endaweni enokushisa okuphezulu, ubulukhuni buvame ukuhlala ku-58~63 HRC ukuze kuhlangatshezwane nezidingo zokumelana nokuguguleka emazingeni okushisa aphezulu.
2. Izidingo zobulukhuni zezingxenye zokuthwala ngemva kokushisa okuphezulu ；
Umzila Womjaho ongu-200°C 60 – 63HRC Ibhola Lensimbi 62 – 66HRC Irola 61 – 65 HRC
225°C Umjaho Wezimoto 59 – 62HRC Ibhola Lensimbi 62 – 66HRC Irola 61 – 65 HRC
250°C Umjaho Wezimoto 58 – 62HRC Ibhola Lensimbi 58 – 62HRC Irola 58 – 62 HRC
Umjaho Wezimoto Ongu-300°C 55 – 59HRC Ibhola Lensimbi 56 – 59HRC Irola 55 – 59 HRC
3. Izidingo eziyisisekelo zamasampula ahlolwe ekuhlolweni kobulukhuni, kanye nezincazelo ezahlukahlukene zokuhlola njengokukhethwa kwezindlela zokuhlola ubulukhuni, amandla okuhlola, kanye nendawo yokuhlola.
1） Amandla okuhlola we-Rockwell hardness tester: 60kg, 100kg, 150kg (588.4N, 980.7N, 1471N)
Ububanzi bamandla okuhlola be-Vickers hardness tester bubanzi kakhulu:10g~100kg (0.098N ~ 980.7N)
Amandla okuhlola omhloli wobulukhuni beLeeb: Uhlobo D luyincazelo esetshenziswa kakhulu yamandla okuhlola (amandla omthelela), efanele izingxenye eziningi zensimbi ezivamile
2） Bheka isithombe esingezansi sendlela yokuhlola
| Inombolo yochungechunge | Ukucaciswa kwengxenye | Indlela yokuhlola | Amazwi |
| 1 | D< 200 | I-HRA, i-HRC | I-HRC inikezwa kuqala |
| bₑ≥1.5 | |||
| Dw≥4.7625~60 | |||
| 2 | bₑ<1.5 | HV | Ingahlolwa ngqo noma ngemva kokufakwa |
| Dw<4.7625 | |||
| 3 | D ≥ 200 | I-HLD | Zonke izingxenye ze-rolling bearing ezingenakuhlolwa ubulukhuni ku-benchtop hardness tester zingahlolwa ngendlela ye-Leeb |
| bₑ ≥ 10 | |||
| Dw≥ 60 | |||
| Qaphela: Uma umsebenzisi enezidingo ezikhethekile zokuhlola ubulukhuni, ezinye izindlela zingakhethwa ukuhlola ubulukhuni. | |||
| Inombolo yochungechunge | Indlela yokuhlola | Ukucaciswa kwengxenye/mm | Amandla okuhlola/N |
| 1 | I-HRC | bₑ ≥ 2.0, Dw≥ 4.7625 | 1471.0 |
| 2 | I-HRA | bₑ > 1.5 ~ 2.0 | 588.4 |
| 3 | HV | bₑ > 1.2 ~ 1.5, Dw≥ 2.0 ~ 4.7625 | 294.2 |
| 4 | HV | bₑ > 0.8 ~ 1.2, Dw≥ 1 ~ 2 | 98.07 |
| 5 | HV | bₑ > 0.6 ~ 0.8, Dw≥ 0.6 ~ 0.8 | 49.03 |
| 6 | HV | bₑ < 0.6, Dw< 0.6 | 9.8 |
| 7 | I-HLD | bₑ ≥ 10, Dw≥ 60 | 0.011 J (iJoule) |
Kusukela yaqaliswa ngo-2007, izindlela zokuhlola ezichazwe kule nqubo zisetshenziswe kabanzi ekulawulweni kwekhwalithi yenqubo yokukhiqiza emabhizinisini okukhiqiza athwalayo.
Isikhathi sokuthunyelwe: Agasti-20-2025
