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为解决用模压法分段成形后再用真空扩散焊制造牙轮钻头新型喷嘴的焊接工艺关键问题，进行了ＹＧ１１硬质合金真空扩散焊工艺夹层材料的选择试验。工艺夹层材料的成分、形态和厚度等因素对焊缝质量影响的试验结果表明，采用冷轧态的Ｃｕ箔或Ｎｉ箔作工艺夹层，焊缝抗剪强度可达６４５ＭＹａ和８０７ＭＰａ，比无工艺夹层分别提高了５．５倍和７倍。在试验的最佳焊接工艺参数下，采用冷轧态１０μｍ厚Ｎｉ箔作工艺夹层材料，可获得与ＹＧ１１硬质合金等强度、致密和耐钻井液冲蚀的优质焊缝。
In order to solve the key problems in the welding process of the new type nozzle with vacuum diffusion welding, the YG11 cemented carbide vacuum diffusion welding process sandwiching material was selected. The experimental results of the influence of the composition, shape and thickness of the process interlayer material on the weld quality show that the shear strength of the weld seam can reach 645MYa and 807MPa using the cold-rolled Cu foil or Ni foil as the process interlayer, Respectively, increased by 5.5 times and 7 times. Under the optimum welding parameters, cold rolled 10μm thick Ni foil was used as process interlayer material to obtain high quality weld with strength, compactness and drilling fluid erosion resistant to YG11 cemented carbide.