1. Indlela yokuhlanza yezinto ezingavuthiwe
Ngoba i-WBN, i-HBN, i-pyrophyllite, i-graphite, i-magnesium, insimbi nokunye ukungcola kuhlala ku-CBN powder;Ngaphezu kwalokho, yona kanye ne-binder powder iqukethe i-oksijini ye-adsorbed, umhwamuko wamanzi, njll., okungafaneleki ukucwiliswa.Ngakho-ke, indlela yokuhlanza izinto zokusetshenziswa ingenye yezixhumanisi ezibalulekile zokuqinisekisa ukusebenza kwama-polycrystals okwenziwa.Ngesikhathi sokuthuthukiswa, sasebenzisa izindlela ezilandelayo zokuhlanza i-micropowder ye-CBN nezinto ezibophayo: okokuqala, phatha i-CBN i-emblem powder nge-NaOH cishe nge-300C ukuze ususe i-pyrophyllite ne-HBN;Bese ubilise i-perchloric acid ukuze ususe i-graphite;Okokugcina, sebenzisa i-HCl ukubilisa ku-heater kagesi ukuze ukhiphe insimbi, futhi uyigeze ukuze ingathathi hlangothi ngamanzi acwecwe.I-Co, i-Ni, i-Al, njll. esetshenziselwa ukubopha iphathwa ngokuncishiswa kwe-hydrogen.Khona-ke i-CBN ne-binder zixutshwe ngokulinganayo ngokwengxenye ethile futhi zengezwe esikhunjeni se-graphite, futhi zithunyelwa esithandweni somlilo esinengcindezi engaphansi kuka-1E2, sishisiswe ku-800 ~ 1000 ° C i-1h ukuze kukhishwe ukungcola, i-oksijeni ekhangisiwe. kanye nomhwamuko wamanzi phezu kwawo, ukuze indawo yokusanhlamvu ye-CBN ihlanzeke kakhulu.
Mayelana nokukhethwa nokwengezwa kwezinto ezibophayo, izinhlobo zama-ejenti wokubopha okwamanje asetshenziswa kuma-polycrystals e-CBN zingafingqwa ngezigaba ezintathu:
(1) Izibophezelo zensimbi, ezifana noTi, Co, Ni.I-Cu, Cr, W nezinye izinsimbi noma ama-alloys, kulula ukuthambisa emazingeni okushisa aphezulu, okuthinta impilo yamathuluzi;
(2) Ibhondi ye-Ceramic, efana ne-Al2O3, imelana nokushisa okuphezulu, kodwa inomthelela omubi wokuqina, futhi ithuluzi kulula ukuwa futhi lilimale;
(3) Isibopho se-Cermet, njengesixazululo esiqinile esakhiwe ama-carbides, ama-nitrides, ama-borides ne-Co, i-Ni, njll., ixazulula ukushiyeka kwezinhlobo ezimbili ezingenhla zesibopho.Inani eliphelele le-binder lizokwanela kodwa lingadluleli.Imiphumela yokuhlola ibonisa ukuthi ukumelana nokugqokwa namandla okugoba e-polycrystal kuhlobene eduze nendlela yamahhala emaphakathi (ubukhulu bongqimba lwesigaba sokubopha), lapho indlela yamahhala eyisilinganiso ingu-0.8 ~ 1.2 μ M, isilinganiso sokugqoka se-polycrystalline siphezulu kakhulu, futhi inani le-binder liyi-10% ~ 15% (isilinganiso sobuningi).
2. I-Cubic boron nitride (CBN) ithuluzi lombungu lingahlukaniswa izigaba ezimbili
Okokuqala ukufaka ingxube ye-CBN ne-ejenti ebophayo kanye ne-matrix ye-carbide enosimende enkomishini ye-molybdenum ehlukaniswe ungqimba oluvikela amashubhu kasawoti kasawoti.
Okunye ukucwilisa umzimba we-polycrystalline CBN cutter ngqo ngaphandle kwe-alloy substrate: thatha umshini wokucindezela ophezulu osemaceleni ayisithupha, bese usebenzisa isishisi esiseceleni sokushisisa.Hlanganisa i-micro-powder ye-CBN exutshwe, uyibambe isikhathi esithile ngaphansi kwengcindezi ethile nokuzinza, bese uyibeka kancane kancane kumazinga okushisa asekamelweni bese uyithulula kancane kancane ekucindezelweni okuvamile.Umbungu we-polycrystalline CBN wenziwa
3. Imingcele yeJiyomethri yethuluzi le-cubic boron nitride (CBN).
Impilo yesevisi yethuluzi le-cubic boron nitride (CBN) ihlobene eduze nemingcele yayo yejometri.Ama-engeli angaphambili nangemuva afanelekile angathuthukisa ukumelana nomthelela wethuluzi.Amandla okukhipha i-chip namandla okukhipha ukushisa.Ubukhulu be-rake angle buthinta ngokuqondile isimo sokucindezeleka sonqenqema lokusika kanye nesimo sokucindezeleka sangaphakathi se-blade.Ukuze ugweme ukucindezelwa okuqinile okubangelwa umthelela wemishini ethiphu yethuluzi, i-engeli engaphambili engeyinhle (- 5 °~- 10 °) ngokuvamile iyamukelwa.Ngasikhathi sinye, ukuze kuncishiswe ukugqokwa kwe-engeli engemuva, ama-angles angemuva amakhulu nama-axiliary angama-6 °, i-radius yephuzu lethuluzi ngu-0.4 - 1.2 mm, kanti i-chamfer ibushelelezi emhlabathini.
4. Ukuhlolwa kwamathuluzi e-cubic boron nitride (CBN).
Ngaphezu kokuhlola inkomba yokuqina, amandla okugoba, amandla aqinile nezinye izici ezingokomzimba, kudingekile kakhulu ukusebenzisa isibonakhulu se-electron enamandla ukuze uhlole ukunemba kokwelashwa okungaphezulu nonqenqema lwensingo ngayinye.Okulandelayo ukuhlolwa kobukhulu, ukunemba kobukhulu, inani lika-M, ukubekezelela ijometri, ukurhabaxa kwethuluzi, bese kuba ukupakishwa nokugcinwa kwempahla.
Isikhathi sokuthumela: Feb-23-2023