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在有气体保护的传送带式的炉中,钎焊10~#和20~#钢的薄壁套管接头。当装配间隙为0.2～1.0毫米时,采用了含40～45%的黄铜、40～42%的铁粉及15～18%铜粉的混合焊料。先把粉状混合物制成膏状后放入装配间隙内。再放上黄铜金属丝环。加热到950～970℃时,黄铜熔化后充满了间隙。然后升温并保持在1020～1050℃,使铜粉完全溶解到液态黄铜钎料中,结果得到了以黄铜为基体及其上分布的铁粉微粒
In gas-shielded belt furnaces, thin-walled ferrules are brazed for 10 to 20 and 20 to 40 steel. When the assembly gap is 0.2 to 1.0 mm, a mixed solder containing 40 to 45% of brass, 40 to 42% of iron powder and 15 to 18% of copper powder is used. The powdered mixture is first put into the assembly gap. Then put brass wire ring. Heating to 950 ~ 970 ℃, the brass filled with a gap after melting. And then heated and maintained at 1020 ~ 1050 ℃, so that the copper powder completely dissolved into the liquid brass solder, resulting in brass as the matrix and the distribution of the iron powder particles