1. Uburyo bwo kweza ibikoresho fatizo
Kuberako WBN, HBN, pyrophyllite, grafite, magnesium, fer nibindi byanduye biguma mu ifu ya CBN;Byongeye kandi, hamwe nifu ya binder irimo ogisijeni ya adsorbed, umwuka wamazi, nibindi, bidakwiye gucumura.Kubwibyo, uburyo bwo kweza ibikoresho fatizo nimwe mumihuza yingenzi kugirango tumenye imikorere ya polycristal synthique.Mugihe cyiterambere, twakoresheje uburyo bukurikira kugirango dusukure micropowder ya CBN nibikoresho bihuza: icya mbere, kuvura ifu yikimenyetso cya CBN hamwe na NaOH kuri 300C kugirango ukureho pyrophyllite na HBN;Noneho uteke acide perchloric kugirango ukureho grafite;Hanyuma, koresha HCl guteka ku isahani yo gushyushya amashanyarazi kugirango ukureho icyuma, hanyuma ukarabe utabogamye n'amazi yatoboye.Co, Ni, Al, nibindi bikoreshwa muguhuza bivurwa no kugabanya hydrogen.Noneho CBN na binder bivangwa neza ukurikije igipimo runaka hanyuma bikongerwaho mubishushanyo bya grafite, hanyuma byoherezwa mu itanura rya vacuum rifite umuvuduko uri munsi ya 1E2, ushyushye kuri 800 ~ 1000 ° C kuri 1h kugirango ukureho umwanda, ogisijeni yamamajwe. n'umwuka w'amazi hejuru yacyo, kuburyo ubuso bwa CBN busukuye cyane.
Kubijyanye no gutoranya no kongeramo ibikoresho byo guhuza, ubwoko bwimikorere ihuza ubu ikoreshwa muri CBN polycristal irashobora gukusanyirizwa mubice bitatu:
(1) Guhuza ibyuma, nka Ti, Co, Ni.Cu, Cr, W nibindi byuma cyangwa ibivanze, biroroshye koroshya ubushyuhe bwinshi, bigira ingaruka kubuzima bwibikoresho;
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.Umubare wuzuye wa binder ugomba kuba uhagije ariko nturenze.Ibisubizo byubushakashatsi byerekana ko imbaraga zo kwambara no kugonda imbaraga za polycristal zifitanye isano rya bugufi ninzira yubusa (ubunini bwurwego rwo guhuza icyiciro), mugihe impuzandengo yubusa ari 0.8 ~ 1,2 μ M, igipimo cyo kwambara polycrystalline nicyo kinini, kandi ingano ya binder ni 10% ~ 15% (igipimo rusange).
2. Cubic boron nitride (CBN) igikoresho cyo gusamo gishobora kugabanywamo ibyiciro bibiri
Imwe muriyo ni ugushira imvange ya CBN hamwe na agent ya bond hamwe na cima ya carbide matrix mugikombe cya molybdenum gitandukanijwe numunyu wa karuboni yumunyu ukingira
Ibindi ni ugucumita mu buryo butaziguye umubiri wa polycrystalline CBN udafite insimburangingo: gufata imashini yo hejuru itandatu, hanyuma ugakoresha ubushyuhe bwo guteranya impande.Kusanya mikorobe ivanze ya CBN ivanze, uyifate mugihe runaka munsi yumuvuduko runaka kandi uhamye, hanyuma uyimanure buhoro buhoro mubushyuhe bwicyumba hanyuma uyipakurure buhoro buhoro kumuvuduko usanzwe.Polycrystalline CBN isoro ryakozwe
3. Ibipimo bya geometrike ya cubic boron nitride (CBN) igikoresho
Ubuzima bwa serivisi ya cubic boron nitride (CBN) ifitanye isano rya bugufi nibipimo bya geometrike.Inguni nziza ninyuma irashobora kunoza ingaruka zo kurwanya igikoresho.Ubushobozi bwo gukuramo chip hamwe nubushobozi bwo gukwirakwiza ubushyuhe.Ingano yinguni ya rake igira ingaruka itaziguye kumiterere yo guca inyuma no guhagarara imbere yimbere.Kugirango wirinde guhangayika bikabije biterwa ningaruka zikoreshwa muburyo bwibikoresho, impande zimbere (- 5 ° ~ - 10 °) zemewe.Muri icyo gihe, kugirango ugabanye kwambara kwinyuma yinyuma, impande zinyuma nizifasha zinyuma ni 6 °, radiyo yibikoresho ni 0.4 - 1,2 mm, na chamfer nubutaka bworoshye.
4. Kugenzura ibikoresho bya cubic boron nitride (CBN)
Usibye kugerageza ibipimo byerekana ubukana, imbaraga zunamye, imbaraga zingutu nibindi bintu bifatika, birakenewe cyane gukoresha microscope ifite ingufu nyinshi kugirango ugenzure ubuso hamwe nubuvuzi bwa buri cyuma.Ibikurikira nubugenzuzi bwibipimo, ibipimo byukuri, M agaciro, kwihanganira geometrike, ubukana bwigikoresho, hanyuma gupakira no kubika.
Igihe cyo kohereza: Gashyantare-23-2023