Ithuluzi lokusika le-CBNszingezohlobo lwamathuluzi okusika ama-superhard, akhiqizwa kusetshenziswa izinga lokushisa eliphakeme kakhulu kanye nobuchwepheshe bengcindezi ephezulu esebenzisa i-CBN powder njengento eluhlaza kanye nenani elincane le-binder.Ngenxa yokuqina okuphezulu kwamathuluzi okusika e-CBN, ifaneleka kakhulu ukucubungula izinto ezinobunzima obukhulu kune-HRC50 kanye nokumelana nokugqoka okuqinile.
Iyiphi impahla eyi-CBN?
I-CBN (i-cubic boron nitride) iyithuluzi eliyithuluzi eliqinile elithuthukisiwe ngemuva kwedayimane lokwenziwa, eliguqulwa libe yi-hexagonal boron nitride (igraphite emhlophe) ngaphansi kwezinga lokushisa eliphezulu nokucindezela.I-CBN iyibhoride engeyona eyensimbi, futhi ubulukhuni bayo bungokwesibili ngemva kwedayimane, buphakeme kakhulu kunensimbi enesivinini esikhulu ne-alloy eqinile.Ngakho-ke, ngemva kokwenziwa amathuluzi, i-CBN ifaneleka kakhulu ekwenzeni izinto ezimile ngamathuluzi okusika i-carbide.
Yiziphi izinto zokwakhaUkusika kwe-CBN amathuluziilungele ukucutshungulwa?
Amathuluzi okusika e-CBN angasetshenziswa ukusika izinto ezifana nensimbi eqinile (insimbi ethwalayo, insimbi yokubumba, njll.), insimbi eyinsimbi (insimbi empunga, i-ductile iron, high chromium cast iron, i-alloy wear-resistant iron iron, njll.), insimbi enesivinini esikhulu, ingxubevange eqinile, ingxubevange yokushisa okuphezulu, njll., futhi ibe nezinzuzo ezinhle ekucubunguleni insimbi eyinsimbi.
Kufanele kuqashelwe ukuthi uma izinto zokucubungula ziyinsimbi ethambile noma engeyona eyensimbi, amathuluzi okusika we-CBN awafanele ukucutshungulwa.Amathuluzi okusika e-CBN anconywa kuphela lapho ubulukhuni bezinto ezibonakalayo bufinyelela ezingeni elithile (HRC>50).
OkuvamileFaka i-CBN amafomu esakhiwo
Ngokuvamile, amathuluzi okusika asetshenziswa kakhulu ekuguquleni imishini ikakhulukazi analawa mafomu esakhiwo alandelayo: ukufakwa kwe-CBN okubalulekile kanye nokufakwa kwe-CBN okushiselwe, lapho ukufakwa kwe-CBN okushiselwe kuhlanganisa ukufaka okuhlanganisiwe okuhlanganisiwe kanye nokufakwa okuhlanganisiwe okuhlanganisiwe.
(1) Ukufakwa kwe-CBN okuhlanganisiwe.Yonke i-blade ifakwe ku-CBN micro powder, enemiphetho eminingi yokusika.Womabili amathiphu e-blade angaphezulu nangaphansi angasetshenziswa ukusika, okuholela ekusetshenzisweni okuphezulu kwe-blade engenalutho.Futhi i-blade inamandla okugoba aphezulu futhi ingamelana nokusika ngesivinini esikhulu ngokujula okukhulu kokusika, ifanele indawo yokusika eqhubekayo, ebuthakathaka, nezikhawu eziqinile.Inokusebenza okubanzi futhi ingahlangabezana nezidingo zokunemba, ukunemba okuncane, nokunemba kwemishini.
(2) Faka i-CBN ehlanganisiwe ehlanganisiwe.Ifomu lokushisela lokungena komzimba wonke linamandla aphezulu okushisela kanye nokuma kwembobo emaphakathi, okungangena esikhundleni ngokuqondile sokufakwa kwe-coating.Ifanele izimo zokwenza imishini ngokujula okungu-<2mm, izimo zemishini ezintekenteke neziqhubekayo, ezihlangabezana nezidingo zokunemba okuncane nokunemba.
(3) Ukufakwa kwe-CBN okuhlanganisiwe okuhlanganisiwe.Ngemuva kokusika, amabhlogo amancane ayinhlanganisela ye-CBN ashiselwa ku-substrate ye-alloy eqinile ukuze akhe izindwani eziphendukayo neziyisicefe.Ngokuvamile, unqenqema olulodwa kuphela olutholakalayo, ikakhulukazi olusetshenziselwa izimo zokunemba zemishini.
Njengamanje, amathuluzi okusika we-CBN asetshenziswa kabanzi ngaphakathi nakwamanye amazwe, ikakhulukazi ukusika okunzima ukwenza izinto zomshini ezimbonini ezinjengokukhiqiza izimoto (izinjini, ama-crankshafts, ama-brake discs, izigubhu zamabhuleki, njll.), imboni yemishini yezimayini (izindonga zodaka, amaphampu anodaka, njll.), imboni yegiya ethwalayo (ama-hub bearings, ama-slewing bearings, ama-wind power bearings, amagiya, njll.), kanye nemboni yamarola (ama-cast iron roller, amarola ensimbi anesivinini esikhulu, njll.).
Isikhathi sokuthumela: May-29-2023