Q1: Dab tsi yog cov ntsiab lus tseem ceeb ntawm kev tswj cov pa roj carbon steel yeeb nkab?
A1:Cov ntsiab lus tseem ceeb yogCov pa roj carbon (C)(rau lub zog),Manganese (Mn)(rau lub zog thiab deoxidizing),Phosphorus (P)thiabSulfur (S)(cov impurities, khaws cia tsawg), thiabSilicon (Si)(rau deoxidizing) -2.
Q2: Vim li cas Sulfur khaws cia rau qhov feem pua tsawg nyob rau hauv cov qauv carbon steels?
A2:Sulfur yog suav tias yog ib qho impurity uas ua rau "kub shortness" (brittleness ntawm qhov kub thiab txias) thiab txo ductility thiab cuam tshuam toughness -10.
Q3: Dab tsi yog "Carbon Equivalent" (CE), thiab vim li cas nws tseem ceeb heev rau vuam?
A3:CE yog ib qho qauv siv los ntsuas qhov weldability ntawm cov hlau. Nws kwv yees qhov hardness thiab hardenability ntawm tshav kub cuam tshuam cheeb tsam (HAZ). Siab dua CE txhais tau hais tias cov hlau yog feem ntau ua rau tawg thaum vuam thiab tej zaum yuav xav tau preheat -2.
Q4: Yuav ua li cas nce cov ntsiab lus carbon cuam tshuam rau cov khoom steel?
A4:Kev nce cov ntsiab lus carbon feem ntau nce tensile zog thiab hardness tab sis txo ductility thiab weldability. Tsawg- carbon steels (<0.25% C) are easiest to weld -2-10.
Q5: Dab tsi yog qhov txawv ntawm cov hlau tua thiab rimmed steel?
A5: Tua hlauyog deoxidized tag nrho (siv cov ntsiab lus zoo li Si los yog Al) los tiv thaiv cov roj evolution thaum lub sij hawm solidification, ua rau ib tug uniform, ntom qauv (yuav tsum tau rau A106).Rimmed hlautsuas yog ib feem ntawm deoxidized, ua rau ib rooj plaub -core variation -2.
