| abstract |
The invention discloses a metal granular reinforced aluminum flux cored wire. The metal granular reinforced aluminum flux cored wire comprises an outer silicon-aluminum alloy skin and a flux core filled in the skin, wherein the flux core is prepared by the following raw materials in percentage by mass: 5 to 20% of K3BF6, 0 to 35% of K2SiF6, 0 to 20% of K2GeF6, 0.8 to 20% of Cu-Ni alloy, 0 to 40% of Al-Si alloy, 0 to 30% of Cu-Si alloy, 0 to 5% of Al-Cu alloy and the balance of potassium fluoroaluminate. The metal granular reinforced flux core flux cored wire has the advantages that elements Ni, Si, Cu and B are added to the flux core in the form of intermediate alloy, so that the high processing performance is ensured, the wire is high in wettability and mobility, the low-temperature impact toughness and cracking resistance of a weld joint are improved, the ductile-brittle transition temperature is reduced, and the strength of the weld joint is improved. |