method for joining elements without penetration and joining structure without penetration

摘要

problem: providing a method for joining non-penetrating elements and a non-penetrating joining structure, whereby a joining element and an element to be joined are joined with high air tightness. solution: a junction member 4 is retained in a housing mold 6 so that a protruding part 4c of the junction element 4 is exposed, a joined element 5 is placed above the junction element 4 so that the protruding part 4c of the junction element 4 is positioned in a blind hole 5a of the joined element 5, the joined element 5 is compressed against the housing mold 6, whereby the joined element 5 and the junction element 4 are plastic deformed at the same time, the excess thickness of the joined element 5 is wound around and into a recessed part 4cc, at which time the recessed part 4cc is formed on the joining element 4, and both elements are non-detachably joined together. . Through this configuration, not only the casting of the joined member 5 but also the joining of the joining member 4 can be performed simultaneously, but a groove to prevent the excess thickness of the joining member 5 from being formed can be formed by the countersunk 4cc. a composite component may also be fabricated, in which component the joint element 4 and the joined element 5 are joined in a non-penetrating state, that is, in a state in which an air tightness is maintained in a joint portion.