1) Ngaba i-Rockwell hardness tester ingasetyenziselwa ukuvavanya ubunzima bodonga lombhobho wensimbi?
Izinto zokuvavanya yipayipi yensimbi ye-SA-213M T22 kunye nobubanzi obungaphandle be-16mm kunye nobukhulu bodonga lwe-1.65mm. Iziphumo zovavanyo lovavanyo lobulukhuni be-Rockwell zimi ngolu hlobo lulandelayo: Emva kokususa isikali se-oxide kunye ne-decarburization layer kumphezulu wesampuli nge-grinder, isampuli ibekwe kwi-workbench ene-V, kunye ne-HRS-150S yedijithali yokuvavanya ubulukhuni be-Rockwell isetyenziselwa ukuvavanya ngokuthe ngqo ukuqina kwe-Rockwell kumphezulu wayo wangaphandle kunye nomthwalo we-980.7N. Emva kovavanyo, kunokubonwa ukuba udonga lombhobho wensimbi lune-deformation encinci, kwaye umphumo kukuba ixabiso lobunzima be-Rockwell elilinganisiweyo liphantsi kakhulu, okubangela uvavanyo olungasebenziyo.
Ngokutsho kwe-GB/T 230.1-2018 «Izixhobo zeMetallic Rockwell Hardness Test Part 1: Test Method», ukuqina kwe-Rockwell yi-80HRBW kunye nobukhulu besampulu encinci yi-1.5mm. Ubukhulu besampulu yeNombolo ye-1 yi-1.65mm, ubukhulu be-decarburized layer yi-0.15 ~ 0.20mm, kunye nobukhulu besampuli emva kokususa i-decarburized layer yi-1.4 ~ 1.45mm, ekufutshane nobukhulu obuncinci besampula echazwe kwi-GB / T 230.1-2018. Ngexesha lovavanyo, kuba akukho nkxaso embindini wesampulu, iya kubangela ukuguqulwa okuncinci (okunokuthi kungabonakali ngeso lenyama), ngoko ke ixabiso lobulukhuni beRockwell liphantsi.
2) Indlela yokukhetha umvavanyi wobulukhuni bomphezulu kwimibhobho yentsimbi:
Emva kovavanyo oluninzi kukuqina komphezulu wemibhobho yentsimbi, inkampani yethu ifikelele kwizigqibo ezilandelayo:
1. Xa uqhuba uvavanyo lobulukhuni be-Rockwell okanye uvavanyo lobulukhuni be-Rockwell kumphezulu wemibhobho yentsimbi enodonga olucekethekileyo, inkxaso enganeleyo yodonga lombhobho iya kubangela ukuguqulwa komzekelo kwaye kukhokelela kwiziphumo zovavanyo oluphantsi;
2. Ukuba inkxaso ye-cylindrical yongezwa phakathi kombhobho wensimbi obhityileyo, iziphumo zovavanyo ziya kuba ziphantsi ngenxa yokuba i-axis yentloko yoxinzelelo kunye nolwalathiso lokulayisha umthwalo alukwazi ukuqinisekiswa ukuba luyi-perpendicular kumphezulu wombhobho wensimbi, kwaye kukho umsantsa phakathi kwendawo yangaphandle yombhobho wensimbi kunye nenkxaso ye-cylindrical edibeneyo.
3. Indlela yokuguqula ubulukhuni beVickers obulinganisiweyo kwi-Rockwell ubulukhuni emva kokufakela kunye nokugulisa isampuli yombhobho wentsimbi ichanekile.
4. Emva kokususa isikali se-oxide kunye ne-decarburization layer phezu kombhobho wensimbi kunye nomatshini wokuvavanya indiza yokuvavanya kwindawo yangaphandle kunye nokuyifaka, ukuqina kwe-Rockwell ebusweni buguqulwa bubunzima be-Rockwell, obuchanekileyo.
Ixesha lokuposa: Jun-13-2024
