Brazed sintered compact
View Patent ↗A brazed sintered compact composed of first and second components, which are easily positioned relative to each other, enabling the provision of a good joining clearance. If a protrusion 3 of a first component 1 is fitted into a recess 13 of a second component 10, both components are able to be positioned relative to each other. Simultaneously, a joining clearance A can be easily obtained between a joining surface 2 of the first component 1 and a joining surface 12 of the second component 10, corresponding to a dimensional difference therebetween. Also, an inner side surface 4 a of a storage groove 4 is aligned with a right or left end 11 a of a leg 11, disposed opposite to the inner side surface 4 a . Accordingly, it is possible to allow as much brazing material as properly needed to permeate between the joining surfaces 2 and 12. Further, as the surface tension of the surplus brazing material becomes unlikely to be developed in the storage grooves 4,4′, the backflow of the material is prevented.
1. A brazed sintered compact composed of at least a first component and a second component, each component having a joining surface and joined to each other by brazing, comprising:
a protrusion formed on the joining surface of one of the first and second components;
a recess formed on the joining surface of the other of the first and second components, said recess being fitted to said protrusion, having such a depth as allows for a desirable joining clearance between the first and the second components when the former is fitted to the latter, and
at least one storage groove formed on the joining surface of one of the first and second components, said storage groove being provided for storing a surplus amount of a brazing material, and disposed opposite to a side portion of the other of the first and second components.
2. A brazed sintered compact composed of at least a first component and a second component, each component having a joining surface and joined to each other by brazing, comprising:
a protrusion formed on the joining surface of one of the first and second components;
a recess formed on the joining surface of the other of the first and second components, said recess being fitted to said protrusion, having such a depth as allows for a desirable joining clearance between the first and the second components when the former is fitted to the latter, and
at least one storage groove formed on a peripheral edge of the joining surface of one of the first and second components, said storage groove being provided for storing a surplus amount of a brazing material, arranged such that an inside surface of the storage groove is aligned with an opposite portion of the other of the first and second components.
3. A brazed sintered compact according to claim 2 ,
wherein said clearance has such a dimension as properly needed to allow the brazing material to permeate between the joining surfaces of said first and second components.
4. A brazed sintered compact according to claim 3 ,
wherein said first component and second component are annular plate materials each of which is formed from metal powder individually, and then they are combined with each other while a brazing material is filled in between the joining surfaces of the components, so that both components are sintered at a predetermined temperature in a furnace, at the same time that the brazing material is fused so as to braze one of the joining surfaces of the components to the other thereof.
5. A brazed sintered compact according to claim 4 , wherein said storage groove is fully opened upward.
6. A brazed sintered compact according to claim 5 ,
wherein one of said first and second components is formed with a protrusion or a recess, while the other thereof is formed with a leg opposite thereto, said leg including a recess or a protrusion on a distal joining surface thereof, and
wherein the inner side surface of said storage groove is aligned with a right or a left end of said leg.
7. A brazed sintered compact according to claim 6 , wherein a hole for inserting a brazing material pellet is formed between the right and the left storage grooves.
8. A brazed sintered compact according to claim 5 ,
wherein one of said first and second components is formed with a protrusion or a recess, while the other thereof is formed with a leg opposite thereto, said leg including a recess or a protrusion on a distal joining surface thereof, and
wherein the inner side surface of said storage groove is aligned with a peripheral edge of the peripheral outer surface of said leg.
9. A brazed sintered compact according to claim 5 ,
wherein said first component and second component in the form of said annular plate member is a planetary carrier composed of a pair of side plates which oppose to each other with a planetary pinion therebetween.