PULODI AFZORI

PULODI AFZORI, pulodi serkarbon yo pulodi legironidaest, ki baroi tayyor kardani qismi korii asbobu afzori buranda va chenkunanda, shtamphoi haddodii sardu tafson, baze qismhoi moshin (podshipnikho, charkhhoi dandonador, vinthon dastgohhoi favquddaqiq va gayra) istifoda meshavad. Pulodi afzori odatan dar tarkibash 0,6—0,7% S dorad (faqat pulode, ki az on shtamphoi haddodii tafson tayyor karda meshavad 0,3—00% S dorad). Vobasta ba garmibardori (hangomi kor ba zarorati baland tob ovardan) Pulodi afzori se nav meshavad: ser­karbon, legironida va tezbur. Pulodi afzori serkarbonu legironi da sakhtii khudro to harorathoi 150—200°S nigoh medorad va baroi sokhtani afzorhoi istifoda meshavad, ki surati korashon past ast. Pulodi tezbur, ki 0,7—1,5% S doradu bo volframu molibden legironida shudaast, sakhtii khudro to harorathoi 560—70O°S nigoh medorad va baroi sokhtani asbobu afzori bu­randa (mavridi surati balandi kor) istifoda meshavad. Nig. niz Pulod.