Hardenable qis alloy steel
Hardenable low-alloy steel yog hom hlau-raws li cov khoom siv nrog cov khoom siv kho tshuab zoo dua li cov pa roj carbon zoo tib yam. Ua los ntawm kev ntxiv cov ntsiab lus alloying xws li npib tsib xee, chromium thiab molybdenum, ua raws li quenching (ceev txias) thiab tempering kho cua sov. Yog tias cov hlau no tau yaj hauv austenite ua ntej quenching, lub hardenability tuaj yeem txhim kho tau zoo. Nickel complements lub hardening nyhuv ntawm chromium thiab molybdenum thiab plays lub luag hauj lwm tseem ceeb nyob rau hauv imparting toughness rau lub hard martensitic microstructure tsim los ntawm quenching thiab tempering tshav kub kev kho mob. Hardenable low alloy steels feem ntau yog siv rau hauv kev tsim cov crankshafts, gears thiab aircraft tsaws iav.
Cov cuab yeej steel
Cov cuab yeej hlau muaj xws li ntau hom kev ua haujlwm siab, hnav-tiv taus steels siv hauv stamping (stamping lossis extrusion), txiav los yog shearing, tuag ua lossis cuam tshuam rau kev siv (cov cuab yeej xws li rauj). Nws yog kub kho zoo ib yam li hardenable low alloy steels.
Cua-hardening cuab yeej steels txo deformation tshwm sim los ntawm ceev dej quenching, ua rau lawv sib npaug ntawm hnav tsis kam thiab toughness. Yas pwm cuab yeej steels yog cov hlau tsis tshua muaj hlau uas tau tsim, carburized, hardened thiab tempered mus rau ib tug siab hardness, ua rau lawv zoo tagnrho rau kev txhaj tshuaj thiab tuag casting pwm.
