Abrasives waxa loo qaybin karaa laba qaybood: Abrasives caadiga ah (sida aluminium oxide, silicon carbide, iwm) iyo abrasives superhard (dheeman, cubic boron nitride, iwm).
CBN iyo Jinzeshi way ka adag yihiin oo way ka adkeysi badan yihiin dabargoynta caadiga ah, laakiin aad bay qaali u yihiin. Isla mar ahaantaana, abrasives superhard waa kuleyl heer sare ah (kuleylka kulaylka dheemanku waa 6 jeer naxaasta), halka abrasives caadiga ah ay yihiin walxo dhoobo ah, sidaas darteed waa adiabatic.
Abrasive Superhard waxa kale oo uu leeyahay fidinta kulaylka sare, taas oo ah, waxa ay awood u leedahay in ay si degdeg ah u baabi'iso kulaylka. Dabeecaddani waxay ka dhigaysa abrasive aadka u adag inay yeeshaan dabeecadda "goynta qabow". Iska caabbinta abrasives superhard waxay sidoo kale aad uga fiican tahay kuwa nabarrada caadiga ah, laakiin sifooyinkan abrasives superhard macnaheedu maaha inay ku habboon yihiin dhammaanhababka shiididda.
Qalab kastaa wuxuu leeyahay goobta ugu habboon ee codsiga, markaa waa muhiim in la fahmo sifooyinka mid kasta oo xoqan. Tusaale ahaan, alumina ceramic abrasives - mararka qaarkood loo yaqaan abuurka jel (SG) abrasives ama abrasives dhoobada - guud ahaan waxay leeyihiin iska caabin ka fiican iyo haynta qaab ka badan dhalaalid (caadiga ah) alumina. Si kastaba ha ahaatee, abrasives dhoobada ayaa sidoo kale leh goobaha codsiga ugu habboon.
Alumina: Al2O3 waa naaxinta ugu jaban. Marka la shiidiyo birta adag, waxqabadku aad buu u fiican yahay. Marka la eego xaaladda labiska joogtada ah, nikkel saldhigga superalloys sidoo kale waa la dhigi karaa. Al2O3 waxay leedahay laqabsi wanaagsan oo kala duwanshiidixaaladaha, sida walxaha jilicsan iyo kuwa adag, goynta khafiifka ah iyo goynta culus, waxayna shiidi kartaa dhamaystirka dusha sare ee aad u sarreeya.
Ceramic alumina: dhoobada dhoobada ayaa leh awood sare, sidaas darteed waxay ku habboon tahay munaasabadaha halka culeyska xoogga goynta ee hadhuudh kasta uu sarreeyo. Ceramic alumina waxay aad waxtar ugu leedahay shiidida cylindrical iyo diyaarad weyn oo isweydaarsanaysa shiida birta adag. Laakiin kuma habboona goynta dheer ee qaanso iyo xoogga yar yar ee hadhuudhka abrasive, sida shiidi gudaha gudaha, shiidi feed gurguurta, iwm Si kastaba ha ahaatee, Qurub alumina dhoobada abrasive wax ka beddelo "fidin" sidoo kale waxaa loo isticmaali karaa si loo farsameeyo viscous.bir aan lahayn, superalloy, iwm xitaa marka qaansada goyntu ay dheer tahay. Waqtigan xaadirka ah, saamiga qaabka (saamiga ballaca dhererka) ee qaybaha abrasive wuxuu gaarayaa 5.
Waqtiga boostada: Jan-02-2023