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Firing flux for submerged arc welding for high-strength steel
Firing flux for submerged arc welding for high-strength steel
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机译：高强度钢埋弧焊用助焊剂
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摘要
PROBLEM TO BE SOLVED: To provide a fired flux for submerged arc welding for high-strength steel, which can obtain excellent low-temperature toughness of a weld metal, have a low diffusible hydrogen content of the weld metal, have no welding defects, and have good welding workability. .. SOLUTION: In a fired flux for submerged arc welding for high tension steel, SiO 2 : 10 to 20%, CaO: 5 to 20%, MgO: 15 to 25%, in mass% with respect to the total mass of the fired flux. al 2 O 3: 15~25%, CaF 2: 8~18%, Li 2 CO 3: 0.5~2.0%, 1 of the Li 2 CO 2 conversion value of CO 3 and CaCO 3 and MgCO 3 Total of seeds or 2 kinds of CO 2 conversion values: 3 to 8%, Si: more than 1.0% to 2.0%, Mn: 0.1 to 0.8%, Al: 0.1 to 0.5 %, A total of one or two of Na 2 O and K 2 O: 0.5 to 4.5%. [Selection diagram] None
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机译：解决的问题：提供一种用于高强度钢的埋弧焊的烧结焊剂，该焊剂可获得优异的焊接金属低温韧性，低的焊接金属扩散氢含量，无焊接缺陷，并且具有良好的焊接加工性。解决方案：在用于高压钢的埋弧焊的熔剂中，SiO 2 的质量百分比为10％至20％，CaO的百分比为5％至20％，MgO的百分比为15％至25％。相对于燃烧助焊剂的总质量。 al 2 O 3：15〜25％， CaF 2：8〜18％，Li 2 CO 3：0.5〜2.0％，Li 2 CO 3 和CaCO 3 和MgCO 3 的种子的总或2种CO 2的> 2 转换值转换值：3至8％，Si：大于1.0％至2.0％，Mn：0.1至0.8％，Al：0.1至0.5％，总共1个或2个Na 2 O和K 2 O：0.5％至4.5％。 [选择图]无
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