What kind of welding rod is Mt -12?
MT-12 is a kind of low carbon steel welding rod, is Chinese more than 5 Minerals Import & Export Corporation Tianjin branch (hereinafter referred to as Minmetals Tianjin Corporation) brand products, its chemical composition is (%): C 0.09 Mn 0.40 Si 0.20 P 0.019 S 0.015Contrast chemical components, similar to J421, but higher than J421
MT-12 welding rod is one of the key brand export commodities exclusively operated by Tianjin metal and mineral import & Export Group co..MT-20 (J422) and MT-12 (J421)MT-12 is J421 (E4313) carbon steel electrode titanium type coating. AC / DC, suitable for all position welding, good performance, and easy arcignition. Cover welding intermittent welding requirements and is especially suitable for small and thin short welding surface finish.
MT-12 is J421 (E4313) - type carbon steel welding rod.Carbon steel electrode (its tensile strength of deposited metal is less than or equal to 500MPa or 50kgf/mm2), suitable for welding carbon steel and low strength low alloy steel.The electrode of low hydrogen type, powder type, welding electrode must be baked above 350 DEG C, as far as possible to do with baking with, how much the drying principle, otherwise it will result in welding defects (such as porosity, cracks, slag, clamping process performance deterioration etc.). The cellulose type welding rod should be baked strictly according to the baking temperature stipulated in the instruction. When the temperature is too high, the cellulose in the coating will be burned and the inherent technological property of the welding rod will be destroyed.When using the low hydrogen electrode, the welder shall be in the upper wind position, strengthen the exhaust air, and prevent the welding fume from damaging the body.For the low hydrogen type welding rod, the number of baking can be less than two times as much as possible, so as to prevent the medicine skin from becoming brittle and falling off.
