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为解决冲孔机硬质合金冲头由于焊接强度不够导致使用中冲头容易脱落,进而大大降低冲头的使用寿命的问题,采用Ti/Cu组合中间层的活性瞬间液相扩散焊(A-TLP)进行了“硬质合金/钢”的焊接试验,并在相同条件下与钎焊进行了对比,采用自制夹具与电子拉伸试验机相结合的方式进行了焊接接头剪切强度的检测。实验发现,对于“YG6X硬质合金/45号钢”的焊接来说,活性瞬间液相扩散焊(A-TLP)的焊接强度远高于钎焊,两种焊接接头的剪切强度分别为173.52 MPa和112.12 MPa。
In order to solve the problem that the punching machine hard alloy punch is easy to fall off due to insufficient welding strength and greatly reduce the service life of the punching head, the active instant liquid phase diffusion welding (A- TLP) were tested on the “cemented carbide / steel” welding and compared with the brazing under the same conditions. The shear strength of the welded joint was measured by a combination of self-made jig and electronic tensile testing machine Detection. The experimental results show that the welding strength of A-TLP is much higher than that of brazing for the welding of “YG6X cemented carbide / 45 steel”, and the shear strengths of the two welded joints are respectively 173.52 MPa and 112.12 MPa.