Kutsemuka kwakachinjika kuchakanganisa huwandu hwechigadzirwa chapera mushure mekukunguruka. Wedzera nguva yekuchenesa billet, zvese kukuvadza kukuru. Iyo tembiricha ye slab ndeye brittle zone ye700-900 ℃. Chikonzero iyo yepasi pevhu inotsemuka ndeye 1050-1100 ℃, yakachinjika mitswe pamusoro pechikonzero ndeye billet pamusoro nechikamu chikuru chinotwasanudza kutwasanuka kunetseka. Niobium nitride mu austenite zviyo miganhu inoderedza kusunga simba, zviyo muganhu kunaya. Panguva ino muchikamu chakakomberedzwa slab junction arc murombo, zvichikonzera kudzika kwepasi kutsemuka. Vertical cracks uye kuumbwa kwemakemikari, mold inotonhorera tembiricha yemvura, mold midziyo, iyo kemikari yeslag, inoenderera ichikanda muchina kurongeka kwechipiri kutonhora system ine chekuita. Matanho ekudzivirira anoenderana:
1. Kudzora kuumbwa kwesimbi. Edza kudzivirira wC iri 0.12% -0.16% D36 simbi kabhoni yemukati mune smelting process control method maererano nepamusoro muganhu. Inogona kunyatso kuderedza mitswe. Peritectic reaction zone.
2. Kudzora crystallization tembiricha nguva dzose mold tembiricha, chakuvhe tembiricha kuchinja inoshanda nzira kuvandudza ndiko kuwedzera chakuvhe kutonhora mvura preheating mudziyo. Kudzvinyirira kuitika kwekutsemuka kana mamiriro ekunze achichinja. Inogonawo kushandiswa mushure mekumira kwega kwega kudira uye kudira nguva isina kuvhurika kana tembiricha yemvura iri pazasi 20 ℃ mold mold inotonhorera mvura, kuve nechokwadi chekuti tembiricha yekukanda mold fashoni.
3. Gadzirisa crystallization process parameters kugadzirisa huwandu hwemvura saizi ye mold, zvichienderana nekusiyana kwemhangura ukobvu. Nekugadzirisa huwandu hwemvura kuti ive nechokwadi chekuti nhanho dzakasiyana dzeiyo mold kutonhora kwakanyanya.
4. Kuvandudza yechipiri kutonhora sisitimu, kunatsiridza tembiricha yenzvimbo yekururamisa, nekugadzirisa yechipiri kutonhora system. Dzivirira brittle zone billet kutwasanuka, inogona kuderedza zvirinani mukana wekutsemuka kwe slab transverse.
5. Strand by strand kuonekwa kuchenesa uye kubvisa slab scarfing kona, inzira inoshanda yekuchenesa slab billet yekupedzisira kuvimbiswa kwehutano. Tinogona kuvandudza mhando yekupedzisira ye slab.