Yintoni ukucima?
Ukucima unyango yinkqubo yokunyanga ukushisa apho insimbi enomxholo wekhabhoni ye-0.4% ishushu kwi-850T kwaye ipholile ngokukhawuleza.Nangona ukucima kwandisa ubulukhuni, kwandisa ukuqina.Amajelo okucima asetyenziswa ngokuqhelekileyo aquka amanzi etyuwa, amanzi, ioli yezimbiwa, umoya, njl. Ukucinywa kunokuphucula ubulukhuni kunye nokumelana nokunxiba kwezixhobo zokusebenza zetsimbi, kwaye isetyenziswa ngokubanzi kwizixhobo ezahlukeneyo, ukubumba, izixhobo zokulinganisa, kunye namalungu angaguqukiyo (ezifana ne iigiya, iiroli, iinxalenye ze-carburized, njl.).Ngokudibanisa ukucima kunye nokufudumala kumaqondo okushisa ahlukeneyo, amandla kunye namandla okukhathala kwesinyithi kunokuphuculwa kakhulu, kwaye ukulungelelaniswa phakathi kwezi zakhiwo kunokufezekiswa ukuhlangabezana neemfuno ezahlukeneyo zokusetyenziswa.
Yintoni injongo yokucima intsimbi?
Injongo yokucima kukuguqula i-austenite epholileyo ibe yi-martensite okanye i-bainite ukuze ufumane i-martensite okanye i-bainite isakhiwo, kwaye emva koko usebenzisane nokufudumala kumaqondo okushisa ahlukeneyo ukuphucula ngokubonakalayo ukuqina, ukuqina, ukuxhathisa ukunxiba, amandla okudinwa, kunye nokuqina kwentsimbi, ngaloo ndlela udibana nokuqina. Iimfuno zokusetyenziswa ezahlukeneyo zamalungu omatshini kunye nezixhobo ezahlukeneyo.Kwakhona kunokwenzeka ukuhlangabezana neempawu ezikhethekileyo zomzimba kunye neekhemikhali zeentsimbi ezithile ezikhethekileyo, ezifana ne-ferromagnetism kunye nokumelana nokubola, ngokucima.
Ukucinywa kwamatyeli aphezulu entsimbi ye-S45C
1. Ukucima i-frequency ephezulu kusetyenziswa kakhulu ukucima umphezulu weendawo zetsimbi.Yindlela yokunyanga ubushushu besinyithi eyenza umlinganiselo othile we-current induced on the surface of the workpiece yemveliso, ifudumeza ngokukhawuleza umphezulu wenxalenye, kwaye emva koko iyicime ngokukhawuleza.Izixhobo zokufudumeza zokungeniswa zibhekiselele kwisixhobo somatshini esenza ukufudumeza kwezinto zokusebenza ukuze kucinywe umphezulu.Umgaqo osisiseko wokufudumeza kwe-induction: I-workpiece yemveliso ifakwe kwi-inductor, edla ngokuba yi-tube yobhedu engenanto kunye ne-input medium frequency okanye i-high-frequency AC power (1000-300000Hz okanye ngaphezulu).Ukuveliswa kwendawo enemagnethi etshintshanayo kuvelisa umsinga owenziweyo wefrikhwensi efanayo kwindawo yokusebenza.Lo mbane owenziweyo usasazwa ngokulinganayo phezu komhlaba, womelele phezu komhlaba, kodwa ubuthathaka ngaphakathi, usondela kwi-0 kwiziko.Ngokusebenzisa le mpembelelo yesikhumba, umphezulu womsebenzi unokufudumeza ngokukhawuleza, kwaye ngaphakathi kwemizuzwana embalwa, ubushushu bomphezulu bunokwenyuka ngokukhawuleza ukuya kwi-800-1000 ℃, kunye nokunyuka okuncinci kwiqondo lokushisa eliphakathi.Ubulukhuni obuphezulu bentsimbi ye-45 emva kokucima i-high-frequency quenching inokufikelela kwi-HRC48-53.Emva kokucima i-high-frequency quenching, ukumelana nokunxiba kunye nokusebenza kuya kunyuka kakhulu.
Umahluko phakathi kwentsimbi ecinyiweyo kunye nengacinywanga i-2.45 yentsimbi: Kukho umahluko omkhulu phakathi kwentsimbi ecinyiweyo kunye nengacinywanga i-45, ngakumbi ngenxa yokuba intsimbi ecinyiweyo kunye nobushushu inokufikelela kukuqina okuphezulu kunye namandla aneleyo.Ukuqina kwentsimbi ngaphambi kokucima kunye nokufudumeza kujikeleze i-HRC28, kwaye ukuqina emva kokucima kunye nokufudumala kuphakathi kwe-HRC28-55.Ngokubanzi, iinxalenye ezenziwe ngolu hlobo lwentsimbi zifuna iimpawu ezilungileyo zoomatshini, oko kukuthi, ukugcina amandla aphezulu ngelixa kukho iplastiki elungileyo kunye nokuqina.
Ixesha lokuposa: Nov-23-2023