Patent ID: 6817513
Filing Date: 2004-11-16
Classification: B23K,C04B,Y10T

Abstract:
A method for producing a composite member comprising different members by fitting and bonding a member having a dented portion which forms a fitting structure and a member having a protruded portion which forms a fitting structure and being different from the member having the dented portion, said method comprising the following steps:a step of uniformly spreading a mixture of at least two fine particle materials differing in wettability with a hard solder over the surface of the dented portion of the member having the dented portion, then disposing a platy or powdery hard solder so as to cover at least a part of the layer comprising the fine particle materials, and further disposing the member having the protruded portion; or uniformly spreading a mixture of at least two fine particle materials differing in wettability with a hard solder over the surface of the dented portion of the member having the dented portion and disposing the member having the protruded portion having one or a plurality of holes in which a hard solder is inserted so as to closely contact with the layer comprising the mixture of at least two fine particle materials differing in wettability with the hard solder; or previously preparing a member having a protruded portion at the end of which is formed a layer comprising a hard solder and a mixture of at least two fine particle materials differing in wettability with the hard solder, disposing a hard solder on the surface of a dented portion of a member having the dented portion and disposing thereon said member having the protruded portion having the layer, and a step of heating them to a given temperature under application of pressure to melt the hard solder and impregnating the mixture of at least two fine particle materials differing in wettability with the hard solder with said molten hard solder to form a bonding layer comprising the hard solder and the fine particle materials, thereby to bond the different members through the fitting structure.