Abrasives irashobora kugabanywamo ibyiciro bibiri: ibisanzwe bisanzwe (nka aluminium oxyde, carbide ya silicon, nibindi) hamwe na superhard abrasives (diyama, nitride cubic boron, nibindi).
CBN na Jinzeshi biragoye kandi birwanya kwambara kuruta ibisanzwe bisanzwe, ariko bihenze cyane.Muri icyo gihe, superhard abrasives ninziza nziza yubushyuhe (ubushyuhe bwumuriro wa diyama bwikubye inshuro 6 ubw'umuringa), mugihe ibisanzwe bisanzwe ari ibikoresho byubutaka, kubwibyo ni adiabatic.
Superhard abrasive nayo ifite diffusivite yumuriro mwinshi, ni ukuvuga ko ifite ubushobozi bwo gukwirakwiza ubushyuhe vuba.Ibi biranga bituma superhard abrasive ifite kamere yo "gukata imbeho".Kurwanya abrasion ya superhard abrasives nayo ni nziza cyane kurenza iyisanzwe, ariko ibyo biranga superhard abrasives ntabwo bivuze ko bibereye bosegusya.
Buri abrasive ifite uburyo bukwiye bwo gukoresha, bityo rero ni ngombwa gusobanukirwa ibiranga buri abrasive.Kurugero, alumina ceramic abrasives - rimwe na rimwe bita imbuto ya gel (SG) abrasives cyangwa ceramic abrasives - mubisanzwe bifite imyambarire yo kwambara no kugumana imiterere kuruta alumina yashonze (isanzwe).Nyamara, ceramic abrasives nayo ifite imirima ikwiye.
Alumina: Al2O3 niyo ihendutse cyane.Iyo gusya ibyuma bikomeye, imikorere nibyiza cyane.Mugihe cyo gukomeza kwambara, nikel base superalloys nayo irashobora kuba hasi.Al2O3 ifite imihindagurikire myiza itandukanyegusyaimiterere, nkibikoresho byoroshye kandi bikomeye, gukata urumuri no gukata cyane, kandi birashobora gusya hejuru cyane.
Ceramic alumina: alumina ceramic ifite imbaraga nyinshi, kubwibyo irakwiriye cyane mugihe aho umutwaro wo kugabanya imbaraga za buri ntete zangiza.Ceramic alumina ifite akamaro kanini mu gusya silindrike no mu ndege nini isubirana gusya ibyuma bikomeye.Ariko ntibikwiriye gukata arc ndende hamwe nimbaraga ntoya zipakurura ingano imwe yangiza, nko gusya imbere kuzenguruka imbere, gusya ibiryo bya creep, nibindi.ibyuma, superalloy, nibindi nubwo gukata arc ari birebire.Muri iki gihe, igipimo cyimiterere (uburebure bwubugari) bwibice byangiza bigera kuri 5.
Igihe cyo kohereza: Mutarama-02-2023