Lub luag haujlwm ntawm manganese hauv low alloy steels
1) Mn ua cov khoom sib xyaw nrog cov hlau, uas tuaj yeem txhim kho qhov nyuaj thiab lub zog ntawm ferrite thiab austenite hauv cov hlau. Manganese feem ntau siv rau hauv cov pa roj carbon manganese los txhim kho lub zog ntawm cov hlau, tab sis nws txo cov ductility ntawm cov khoom thiab ua rau muaj kev cuam tshuam rau kev nyuaj siab corrosion tawg. Hauv cov pa roj carbon monoxide dav dav thiab cov hlau tsis tshua muaj hlau, nws cov ntsiab lus yog 1% ~ 2%.
(2) manganese yog qhov tsim nyog thiab desulfurizer. Mn thiab leej faj daim ntawv Mns, uas tuaj yeem tiv thaiv lub thermal embrittlement los ntawm leej faj, yog li txhim kho cov khoom ua haujlwm kub ntawm cov hlau. Yog li no, muaj cov hlau ntxaij ntau feem ntau muaj cov nqi ntawm manganese.
(3) Vim tias manganese hauv steel tuaj yeem txo qhov tseem ceeb hloov kev kub hloov, qhov kub tsis tshua muaj kev cuam tshuam toughness ntawm carbon manganese steel zoo dua li ntawm carbon hlau.
(4) Manganese tuaj yeem muaj peev xwm ua kom txoj hauv kev hnyav ntawm carbon manganese steel. Thaum cov ntsiab lus manganese muaj siab, nws muaj qhov tsis zoo txaus los coarsen cov nplej thiab ua kom lub siab tsis zoo ntawm cov hlau.
(5) Manganese muaj kev cuam tshuam tsis zoo rau qhov weldability ntawm hlau. Txhawm rau txhawm rau txhim kho qhov txuas ntawm cov hlau, cov ntsiab lus carbon ntawm cov hlau yuav tsum raug txo kom tsawg raws li qhov tso cai. Nws kuj yog qhov tsim nyog los siv qhov ua tau zoo qis ntawm hydrogen electrode thiab cov txheej txheem vuam sib txuas.
