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1.焊条和熔渣的组成及其作用焊条由焊芯和药皮两部分组成。(1)焊芯是焊条中的钢芯。焊芯的牌号用“H”表示,后面的数字表示含碳量,其它合金元素含量的表示方法与钢号大致相同。质量水平不同的焊芯在最后标以一定符号以示区别,如 H08表示含碳量≤0.10%的低碳钢焊芯;H08A 中的“A”表示优质钢其硫、磷含量均不超过0.03%;H08E 中的“E”表示特优质钢,其硫、磷含量均不超
1. The composition of the electrode and the slag and its role The electrode consists of the core and the coating of two parts. (1) welding core is the steel core in the electrode. Welding core grades with “H” said the figures behind the carbon content, the content of other alloy elements and the steel is about the same. The quality of the different levels of the core marked at the end with a certain sign to show the difference, such as H08 said carbon content ≤ 0.10% of the low-carbon steel welding core; H08A in the “A” that the high-quality steel sulfur and phosphorus content of not more than 0.03 %; H08E in the “E” that special high-quality steel, the sulfur and phosphorus content are not super