What are the advantages and disadvantages of these two elements?
What Si is not too obvious benefits, benefits of welding as deoxidizer, guimeng combined deoxidation is the most effective method of deoxidation, easy to form welding slag. Si can make the solution droplet transition, welding time more comfortable. Too much slag is easy to form, which is not good for impact toughness.Mn can improve the strength of weld metal in a certain range, Deoxidizer and Si when used with good, much of the downside is that the welding process explosion, crackling bad, smoke will increase, also harm to human body.
Both manganese and silicon are useful elements for a while!Manganese is a strong deoxidizer! For steel, S is a harmful element!Oxygen and sulfur are of the same origin, so they are also very powerful sorbents!Silicon also has deoxygenation! The others don't know! Probably on the issue of electricity! You think about that, I'm a construction man, I know so much!
Wire components should comply with the relevant standards and contains sufficient deoxidizing elements Si and Mn, because the binding ability of Si and Mn elements and O2 is greater than Fe, can effectively inhibit the oxidation of CO2 to Fe, CO to prevent the generation of porosity, at present most of the domestic wire CO2 using copper as a protective layer, and by electroless plating. Low strength combined with chemical plating, copper plating layer is not uniform, easy out of copper scrap, copper plating and easy to rust, so the surface quality of wire should be checked before use, to reduce the source of blowhole.
