Brazed Joint Retaining Recess Suppresses Filler Overflow
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing joined components using brazing filler metal tend to overflow at the outer peripheral line of the joint boundary surface, leading to appearance issues and hindering mechanical component integration.
Innovation Solution
A joined component design featuring a retaining recess on the first member to contain molten brazing filler metal, preventing excessive penetration into the joint boundary surface, with a manufacturing method involving heat treatment to ensure the filler metal forms a pool within the recess, thereby suppressing overflow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If brazing filler metal is placed in the non-contact area and melted by heat treatment, then the first member and second member are joined together, but the brazing filler metal overflows from the outer peripheral line of the joint boundary surface
Solution Approach 1:
The patent applies preliminary action by providing grooves in advance on the joint boundary surface before brazing. These grooves are pre-positioned to control the flow path of molten brazing filler metal, preventing overflow while ensuring proper distribution across the joint area. The grooves act as predetermined channels that guide the molten metal during the brazing process.
Solution Approach 2:
The patent applies local quality by creating grooves with specific depth (0.05mm) and positioning them in specific locations (radially from the non-contact area) on the joint boundary surface. This localized structural modification ensures that brazing filler metal flows only to where it is needed while preventing overflow at critical areas, particularly along the outer peripheral line.
2Reliability
If grooves are provided to facilitate penetration of brazing filler metal, then joining is improved, but excessive brazing filler metal penetrates into the joint boundary surface causing overflow
Solution Approach 1:
The patent applies parameter changes by precisely controlling the groove depth at 0.05mm and the positioning of grooves relative to the non-contact area. This parameter optimization ensures that grooves are deep enough to facilitate adequate penetration of brazing filler metal for reliable joining, yet shallow enough to prevent excessive penetration that would cause overflow along the outer peripheral line.
3Reliability
If brazing filler metal overflows from the outer peripheral line, then joining is achieved, but the appearance deteriorates and mechanical component integration is hindered
Solution Approach 1:
The patent applies local quality by strategically positioning grooves to control brazing filler metal flow in specific areas. The grooves are arranged radially from the non-contact area, ensuring that molten metal penetrates adequately at the joint boundary while preventing overflow at the outer peripheral line, thus maintaining clean appearance and facilitating subsequent mechanical component integration.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution effectively suppresses brazing filler metal overflow from the outer peripheral line, maintaining component appearance and facilitating integration with other mechanical components by retaining the filler metal within the recess.
Implementation Method 1
the brazing filler metal is melted by heat treatment, whereby the molten brazing filler metal in the non-contact area is spread over the joint boundary surface
Implementation Method 2
the brazing filler metal is melted by heat treatment
Implementation Method 3
grooves each having a depth of about 0.05 mm are provided in such a manner as to extend radially from the non-contact area, whereby the penetration of the brazing filler metal from the non-contact area into the joint boundary surface is facilitated
Data Source
AI summary
It is an object of the present invention to provide a joined component in which the overflow of brazing filler metal from the outer peripheral line of a joint boundary surface between a first member and a second member is suppressed, and a method for manufacturing the joined component. A joined component is obtained by joining, with brazing filler metal, a first member and a second member to each other at a joint boundary surface where the first member and the second member are in contact with each other, the joined component having a non-contact area that is provided on an inner side with respect to an outer peripheral line of the joint boundary surface and in which the first member and the second member are not in contact with each other. In the joined component, the first member has a retaining recess where the brazing filler metal that is melted when the first member and the second member are joined to each other is retained, the retaining recess providing the non-contact area. The molten brazing filler metal including some solidified part forms a brazing-filler-metal pool in the retaining recess.