Amathuluzi okusika i-Tungsten carbide - amazinyo ezimboni, asetshenziswa kabanzi ekukhiqizeni izinto ezibalulekile

Inqubo yokusika ithatha cishe u-90% womthwalo womshini.Ithuluzi "izinyo" lethuluzi lomshini wezimboni, elithinta ngokuqondile izinga lokucubungula embonini yokukhiqiza.Ukusika kubhekisela ekusikeni kwempahla eyeqile kusuka endaweni yokusebenza, ukuze kuqinisekiswe ukuthi i-workpiece geometry, ukunemba kobukhulu, ikhwalithi ephezulu kanye nezinye izici zezidingo zokuklama zendlela yomshini, okuhlanganisa cishe amaphesenti angama-90 awo wonke umsebenzi womshini.Ukusika ngokuvamile kufinyelelwa ngokusika amathuluzi omshini, futhi ithuluzi liyisihluthulelo sezinto ezidliwayo, njengoba "amazinyo" amathuluzi omshini wezimboni, ikhwalithi yayo ithinta ngokuqondile ukukhiqizwa kwezinga lobuchwepheshe lokukhiqiza imishini, ukusebenza kahle kokukhiqiza kanye nekhwalithi yomkhiqizo.Amathuluzi okusika akhuphukele phezulu kwabahlinzeki bempahla yokusetshenziswa, ezansi nomfula asetshenziswa ezimbonini ezinkulu zokukhiqiza.Thatha ithuluzi le-carbide elijwayelekile kakhulu njengesibonelo, ngokuya ngezinto ezicutshungulwayo zingahlukaniswa zibe: insimbi, insimbi engagqwali, insimbi ecijile, insimbi engeyona insimbi, i-alloy engashisi ukushisa, insimbi eqinile, njll. Ukukhuphuka komfula ukuze uthole izinto zokusetshenziswa ezihambisanayo ( i-tungsten carbide, i-cobalt powder, i-tantalum niobium isixazululo esiqinile, njll.) abakhiqizi, inkambu yesicelo esezansi nomfula igxile embonini yokukhiqiza, ikakhulukazi esetshenziswa ezimotweni nezithuthuthu, amathuluzi omshini, imishini ejwayelekile, isikhunta, imishini yobunjiniyela neminye imikhakha, i-aerospace, ezempi, imishini yezokwelapha kanye neminye imikhakha iphinde inikeze isicelo esibanzi sobuchwepheshe nesikhala soshintsho samathuluzi e-carbide.

Yiziphi izici zamathuluzi okusika i-carbide?

I-1.ubunzima obukhulu: Ithuluzi le-Carbide lenziwe nge-carbide enobunzima obuphezulu kanye nephuzu elincibilikayo (eyaziwa ngokuthi isigaba esinzima) kanye ne-metal binder (eyaziwa ngokuthi isigaba sokubopha) ngendlela ye-powder metallurgy, ubulukhuni bayo buyi-89 ~ 93HRA, buphakeme kakhulu kunensimbi yesivinini esikhulu. , ku-5400C, ubulukhuni busengafinyelela ku-82 ~ 87HRA, nokuqina kokushisa kwegumbi lensimbi eliphezulu (83 ~ 86HRA) okufanayo.

2. Amandla okugoba nokuqina: amandla okugoba engxubevange eqinile evamile akububanzi obungu-900 ~ 1500MPa.Ukuphakama kokuqukethwe kwesigaba sokubopha insimbi, kuyanda amandla okugoba.Uma okuqukethwe kwe-binder kuyefana, i-YG(WC-Co).Amandla engxubevange aphakeme kunengxubevange ye-YT(WC-Tic-Co), futhi amandla ayancipha ngokunyuka kokuqukethwe kwe-TiC.I-Hard alloy iwuhlobo lwe-brittle material, ukuqina kwayo komthelela ekamelweni lokushisa 1/30 ~ 1/8 kuphela ye-HSS.

3. Ukumelana nokugqoka okuhle.Ijubane lokusika lethuluzi le-carbide liphakeme izikhathi ezi-4 ~ 7 kunelensimbi yesivinini esikhulu, futhi impilo yamathuluzi iphakeme izikhathi ezi-5 ~ 80.Ukukhiqiza isikhunta, amathuluzi wokulinganisa, impilo kunensimbi yensimbi yengxubevange izikhathi ezingama-20 ~ 150 ngaphezulu.Ingakwazi ukusika i-50HRC noma impahla eqinile.