Izingxenye eziningi ezisebenza ngomshini zisebenza ngaphansi kwemithwalo eshintshanayo nenomthelela efana ne-torsion nokugoba, futhi ungqimba lwazo olungaphezulu luthwala ingcindezi ephakeme kunomongo; Ezimweni zokungqubuzana, ungqimba olungaphezulu luhlala lugugile. Ngakho-ke, isidingo sokuqinisa ungqimba olungaphezulu lwe-forgings lubekwe phambili, okusho ukuthi ubuso bunamandla aphezulu, ukuqina nokumelana nokugqoka.
Ukwelashwa kokushisa okungaphezulu kwengxenye ye-forgings kuyinqubo esebenza kuphela ukwelashwa kokushisa endaweni yokusebenza ukuze kushintshwe isakhiwo nezici zayo. Ngokuvamile, ubuso bunokuqina okuphezulu nokumelana nokugqoka, kuyilapho umgogodla usagcina ipulasitiki nokuqina okwanele. Ekukhiqizeni, insimbi enokwakheka okuthile ikhethwa kuqala ukuze kuqinisekiswe ukuthi izakhiwo zemishini zomgogodla zihlangabezana nezidingo, bese kusetshenziswa izindlela zokwelashwa kokushisa okungaphezulu ukuze kuqiniswe isendlalelo esingaphezulu ukuze kuhlangatshezwane nezidingo zokusebenza. Ukwelashwa kokushisa okungaphezulu kuhlukaniswe izigaba ezimbili: ukucisha okungaphezulu kanye nokwelashwa kokushisa kwamakhemikhali angaphezulu.
Ukucinywa kobuso bezingxenye ze-forging. I-surface quenching yezingxenye ze-forgings iyindlela yokwelapha ukushisa eshisa ngokushesha ingaphezulu le-workpiece ekushiseni okucishayo, bese ipholisa ngokushesha, ivumela kuphela ungqimba olungaphezulu ukuthola isakhiwo esicinyiwe, kuyilapho umgogodla usagcina isakhiwo esicishiwe ngaphambili. . Okuvame ukusetshenziswa yi-induction heat surface quenching kanye nokucisha indawo yokushisa ilangabi. I-surface quenching ngokuvamile isetshenziselwa insimbi ye-carbon steel kanye ne-medium carbon alloy steel forgings.
Ukucisha ukushisisa okungeniswayo kusebenzisa umgomo wokungeniswa kuka-electromagnetic ukuze kunxenxe imisinga emikhulu ye-eddy ebusweni bomsebenzi ngokusebenzisa igagasi elishintshanayo, okubangela ukuthi ingaphezulu le-forging lishise ngokushesha kuyilapho umgogodla ucishe ungashisi.
Izici zokucisha indawo yokushisa yokungeniswa kwe-induction: ngemuva kokucisha, izinhlamvu ze-martensite ziyacwengwa, futhi ubulukhuni bobuso buyi-2-3 HRC ephakeme kunaleyo yokucisha okuvamile. Kukhona ukucindezeleka okubalulekile kwensalela yokucindezela phezu kongqimba olungaphezulu, okusiza ukuthuthukisa amandla okukhathala; Ayithambekele ekwakhiweni kwe-deformation kanye ne-oxidative decarburization; Kulula ukufeza imishini kanye ne-automation, ilungele ukukhiqizwa ngobuningi. Ngemuva kokucisha ukushisa kwe-induction, ukuze kuncishiswe ukucindezelwa kokucisha kanye nokuqina, ukushisa okuphansi kokushisa ku-170-200 ℃ kuyadingeka.
Ukucima i-flame heat surface quenching kuyindlela yenqubo esebenzisa ilangabi lomlilo we-oksijini i-acetylene gas (kufika ku-3100-3200 ° C) ukuze kushisise ngokushesha indawo yokubumba ngaphezu kwezinga lokushisa lokushintsha kwesigaba, kulandelwa ukucisha nokupholisa.
Khombisa izinga lokushisa eliphansi ngokushesha ngemva kokucisha, noma sebenzisa ukushisa kwangaphakathi kwemfucuza ukuze uzibambe. Le ndlela ingathola ukujula kokucisha okungu-2-6 mm, ngemishini elula nezindleko eziphansi, ezifanele ucezu olulodwa noma ukukhiqizwa kwe-batch encane.
Isikhathi sokuthumela: Sep-05-2023
