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发明公开
CN104175022A 一种管道及结构用管等压力钢管高速埋弧焊用烧结焊剂 无效 - 撤回

一种管道及结构用管等压力钢管高速埋弧焊用烧结焊剂
摘要：
一种管道及结构用管等压力钢管高速埋弧焊用烧结焊剂，属于压力钢管焊接技术领域。成分按重量百分数含有8.0～20.0％CaO,10.0～30.0％MgO,20.0～40.0％CaF2,2.0～8.0％Na2O,1.0～5.0％K2O,1.0～5.0％MnO，0.1～1.0％FeO,20.0～30.0％SiO2,8.0～18.0％Al2O3，0.5～2.0％TiO2,0.01～0.1％ZrO2。该焊剂碱度为2.5～3.5。该碱性焊剂匹配焊丝时能够获得适应100kg级钢板制造的水电压力钢管焊接接头要求的焊缝接头抗拉强度≥950MPa，-60℃冲击功≥47J，0℃冲击功≥100J。
摘要（英）：

The invention belongs to the technical field of pressure steel pipe welding and discloses sintered flux for high-speed submerged arc welding of pressure steel pipes like pipelines and structural pipes. The sintered flux is composed of, by weight, 8.0-20.0% of CaO, 10.0-30.0% of MgO, 20.0-40.0% of CaF2, 2.0-8.0% of Na2O, 1.0-5.0% of K2O, 1.0-5.0% of MnO, 0.1-1.0% of FeO, 20.0-30.0% of SiO2, 8.0-18.0% of Al2O3, 0.5-2.0% of TiO2 and 0.01-0.1% of ZrO2. Alkalinity of the sintered flux is 2.5-3.5. When being matched with a welding wire, the sintered flux can acquire hydroelectric pressure steel pipe welding joint meeting requirements of manufacturing of 100kg-class steel plates, and the welding joint is larger than or equal to 950MPa in tensile strength, larger than or equal to 47J in -60 DEC G impact energy and larger than or equal to 100J in 0 DEC G impact energy.

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