1. Ingaruka zo guterwa birenze urugero ibyuma
1.1 Niba gukingirwa birenze urugero, ibirimo silikoni bizaba byinshi, kandi niba birenze agaciro runaka, silicon brittleness izagaragara. Niba ibyanyuma bya silicon birenze ibipimo, bizanaganisha kubyimbye bya A-grafite; ikunda kandi kugabanuka no kugabanuka, kandi umubare wa matrix F uziyongera; hazabaho na pearlite nkeya. Niba hari ferrite nyinshi, imbaraga zizagabanuka aho.
1.2 Gutera birenze urugero, ariko ibirimo bya silikoni ya nyuma ntibirenza ibisanzwe, byoroshye kubyara imyenge yo kugabanuka no kugabanuka, imiterere iratunganijwe, kandi imbaraga ziratera imbere.
1.3. porosity.
1.4 Gutera cyane ibyuma bya nodular bizongera umubare wamatsinda ya eutectic kandi byongere impengamiro yo kurekura, bityo hariho urugero rwinshi rwo gutera. Birakenewe kureba niba umubare wa eutectic cluster ari muto cyane cyangwa munini cyane munsi ya metallography, ni ukuvuga, mukibazo kuki witondera ingano ya inoculum, nimpamvu ituma inoculum ya hypereutectic ductile fer ari nini cyane bizatera grafite kureremba.
2. Uburyo bwo gukingira ibyuma
2.1 Kugabanuka kwicyuma cyumuvuduko mubisanzwe biterwa numuvuduko ukonje utinze nigihe kinini cyo gukomera, biganisha ku kugoreka grafite hagati ya casting, kugabanya imipira, hamwe nudupira twinshi twa grafite. Ingano ya magnesium isigaye, igenzure ingano yubutaka budasanzwe, wongereho ibintu, ushimangire urukingo nizindi ngamba zikoranabuhanga.
2.2. Ingano yo gukingirwa yongeweho nabantu batandukanye irashobora kuba itandukanye. Nibyo gusa, ariko kandi ntibihagije.
3. Ingano ya inoculant yongewe kumyuma
3.1 Uruhare rwinzitane: guteza imbere igishushanyo mbonera, kunoza imiterere yikwirakwizwa nubunini bwa grafite, kugabanya imyumvire yo kwera, no kongera imbaraga.
3.2 Umubare wa inoculant wongeyeho: 0.3% mumufuka, 0.1% mubibumbano, 0.4% muri rusange.
Igihe cyo kohereza: Gicurasi-05-2023
