Corrosion-resistant bronze solder and preparation method thereof

The corrosion-resistant bronze solder comprises the following components in percentage by weight: 10 to 15 percent of Sn, 0.30 to 2.0 percent of Ni, 0.10 to 1.0 percent of Cr, 0.02 to 0.4 percent of P, 0.02 to 0.40 percent of B, 0.02 to 0.40 percent of Si and the balance of Cu. The invention further discloses a preparation method of the corrosion-resistant bronze solder, and the preparation method comprises the following steps: firstly melting copper, then adding tin and uniformly mixing, then adding Ni-Cr-B-Si-P alloy, melting and uniformly mixing to obtain casting liquid, the components of the casting liquid are as the corrosion-resistant bronze solder, and then carrying out casting molding and processing to obtain the corrosion-resistant bronze solder. The welding flux has good welding performance and excellent salt spray corrosion resistance. 本发明公开了一种耐腐蚀青铜焊料，其成分按重量百分比包括：Sn10-15％，Ni0.30-2.0％，Cr0.10-1.0％，P0.02-0.4％，B0.02-0.40％，Si0.02-0.40％，余量为Cu。本发明还公开了上述耐腐蚀青铜焊料的制备方法，包括如下步骤：先将铜熔化，然后投入锡混匀，再投入Ni-Cr-B-Si-P合金，熔