高韧性自保护药芯焊丝

Development of a High-toughness Self-shielded Flux-cored Wire

关键词:  自保护药芯焊丝  氟钙钛渣系  工艺性能  力学性能  低温韧性

Key words:  self-shielded flux-cored wire  CaF₂-TiO₂-Mgo slag system  thehnological property  mechnical property  low-temperature toughness

摘要:

采用正交设计方法。研制出一种新型氟钙钛渣系(GaF₂-TiO₂-MgO)的自保护药芯焊丝,其焊接工艺性能良好,烟雾少,并且熔敷金属组织均匀、细小,塑性和低温韧性高,是与550MPa级低合金高强钢相匹配的一种高效焊接材料,适于野外焊接重要结构。

Abstract:

By means of orthogonal besign method, a new self-shielded flux-cored wire with CaF₂-TiO₂-MgO slag system has been developed. The deposited metal of the wire is characterized by its high ductility and low-temperature toughness, refined microstructure and good technological properties in welding. It is a quality welding consumable matching the HSLA steel with 550 MPa strength level and suitable for welding important constructions.