Method for Solid-Phase Bonding of Iron Base Alloy and Aluminum Base Alloy
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United States of America Patent
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app pub date -
Jun 1, 2004
filing date -
Jun 1, 2004
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[PROBLEMS] To provide a process for producing a lightweight race ring through steady unification, without any deformation, of an aluminum alloy member for constituting a main body of race ring and an iron base alloy member for constituting a raceway surface thereof. [MEANS FOR SOLVING PROBLEMS] Outer ring (41) of cross roller bearing is a composite part comprised of outer ring main body member (411) of aluminum alloy and, bonded to the inside thereof, outer ring side raceway surface constituting member (412) of iron base alloy. Layer of A7075 type alloy powder (413) is interposed between diffusion bonding face (411a) of outer ring main body member (411) and diffusion bonding face (412a) of outer ring side raceway surface constituting member (412) (step ST3), and diffusion bonding of the members (411, 412) is carried out (step ST4). It has been ascertained that the members (411, 412) can be strongly bonded and unified together by interposing the layer of alloy powder (413) even at bonding temperature lower than in the prior art. Thus, the diffusion bonding can be accomplished without any deformation of the outer ring main body member (411) of aluminum alloy.
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