Ha assy ea botsoa e pholile, hangata mapetsong a masoeu a thehoa holim'a likarolo tse ka holimo le tse tšesaane.
Sebopeho sa molomo o mosoeu se thata ebile se brittle, ka ts'ebetso e fokolang ea ts'ebetso 'me ho bonolo ho ebola.
Ka hona, annealing (kapa normalizing) e tlameha ho sebelisoa ho felisa lisele tse tšoeu tsa molomo.Ts'ebetso ea annealing ke: ho futhumatsa ho 550-950 ℃ bakeng sa lihora tse 2-5, ebe sebopi se pholile ho 500-550 ℃ ebe se futhumatsa moea.Nakong ea mocheso o phahameng oa mocheso, cementite e phahameng ea mocheso le cementite ea eutectic e ile ea senyeha ho ba graphite le A, 'me cementite ea bobeli le cementite ea eutectoid le eona e ile ea bola nakong ea ts'ebetso ea ho pholisa e latelang, e leng se ileng sa fella ka ts'ebetso ea graphitization.Ka lebaka la ho senyeha ha cementite, boima bo fokotseha, kahoo bo ntlafatsa machinability.
Normalizing ea tšepe ea ductile
Sepheo sa ductile iron normalizing ke ho fumana sebopeho sa pearlite matrix, ho hloekisa lijo-thollo le sebopeho se ts'oanang, e le ho ntlafatsa thepa ea mechine ea Dandong steel castings.Ka linako tse ling ho tloaeleha ho boetse ho lokisoa ha ductile tšepe holim'a quenching holim'a sebopeho, normalizing e arotsoe ka mocheso o phahameng o tloaelehileng le o tloaelehileng oa mocheso o tlaase.Thempereichara e phahameng ea normalizing mocheso ka kakaretso ha e fete 950 ~ 980 ℃, 'me mocheso o tlase o tloaelehileng oa mocheso o atisa ho futhumala ho palo e feletseng ea mocheso oa 820 ~ 860 ℃.Ka mor'a ho tloaeleha, batho ba bane ka kakaretso ba hlokeha ho sebetsana le eona ho felisa khatello ea kelello e ka hare e hlahisoang nakong ea ho tloaeleha.
ho thatafatsa bokahodimo
E le ho ntlafatsa ho thatafala ha holim'a metsi, ho hanyetsa ho roala le matla a mokhathala a lihlopha tse ling tsa mabili a tataisang, ho tima holim'a metsi ho ka sebelisoa.Ka bobeli li-cast iron cast le ductile iron castings li ka thatafatsoa.Ka kakaretso, ho tima mocheso o phahameng (bohareng) oa maqhubu a ho futhumatsa le ho tima holim'a motlakase.
Khetla ea mofuta oa lebokose e idler e entsoe ka lehlabathe la alkali phenolic resin kapa ts'ebetso ea lehlabathe la khalase ea metsi.Kamora 'matrix normalizing le rail surface medium frequency induction induction quenching treatment ea mocheso, top hardness e fihla HRC48-58,' me botebo bo thata bo ka holimo ho 4-6mm (HRC45).E na le matla a ho mamella tšusumetso e phahameng le ho hanyetsa ho apara ka lebaka la maemo a thata a ho sebetsa.
Nako ea poso: Apr-23-2022
