Cov khoom siv dav dav rau cov ncej feem ntau suav nrog carbon steel, hlau alloy, thiab hlau ductile. Ntawm lawv, 45 steel yog cov feem ntau siv cov pa roj carbon steel vim nws cov khoom siv zoo, tsis tshua muaj nqi, thiab yooj yim ntawm machining.
Cov pa roj carbon steel: xws li siab - cov pa roj carbon zoo ntawm qib 35, 45, thiab 50, nrog rau 45 steel yog feem ntau siv. Cov khoom zoo tuaj yeem tau txais tom qab quenching thiab tempering los yog normalizing. Rau cov ncej uas muaj kev ntxhov siab tsawg, cov pa roj carbon zoo tib yam xws li Q235 tuaj yeem siv tau.
Alloy steel: xws li 40Cr, 20CrMnTi, thiab 38CrMoAlA, thiab lwm yam, muaj zog dua, hnav tsis kam, thiab qaug zog kev ua haujlwm, haum rau shafts nyob rau hauv hnyav loads, high speeds, los yog tshwj xeeb ua hauj lwm tej yam kev mob, tab sis tus nqi siab dua.
Ductile hlau: haum rau shafts nrog cov duab nyuaj uas yuav tsum tau kev co damping (xws li crankshafts thiab camshafts), nrog rau qhov zoo xws li tus nqi qis, zoo vibration absorption, thiab tsis tshua muaj rhiab heev rau kev ntxhov siab, tab sis tsis zoo cuam tshuam toughness.
Tsis tas li ntawd, stainless hlau (xws li 304 thiab 316) tuaj yeem siv los tsim cov ncej hauv corrosion- tiv thaiv ib puag ncig, tab sis nws lub zog thiab kev lag luam kuj tseem qis dua cov hlau thiab hlau alloy.
