Solid Retainer Mechanical Interlocks for Low-Temperature Component Joints
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Solution Overview
Problem
Casting large or complex metal components in a single operation often results in deviations from specifications and requires high-temperature processes, which can be costly and difficult to control, and may expose components to undesirable temperatures and mechanical properties.
Innovation Solution
Joining components using a solid retainer material that forms a mechanical interlock at low temperatures, eliminating the need for molten metals and allowing the use of high-strength materials like superalloys or ceramics, which are inserted into a joint region to form a secure connection without melting, thereby avoiding the limitations of traditional casting and joining methods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If casting is used to form large or complex metal components in a single operation, then the components can be produced as integral pieces, but the casting process results in deviation from specifications and tolerance requirements
Solution Approach 1:
The patent divides large or complex components into multiple separately cast segments or modules that can be produced with higher precision. These segments are then joined together using mechanical fasteners, bonding, or welding to form the complete assembly, thereby achieving both manufacturing precision and productivity.
Solution Approach 2:
The patent transitions from single-operation casting to a multi-dimensional approach involving separate casting operations followed by assembly operations in a different dimensional space (joining multiple components together), thereby resolving the contradiction between precision and efficiency.
2Strength
If traditional thermal bonding processes like welding are used to join separate components, then components can be connected, but high temperatures are required which may damage materials or require expensive equipment
Solution Approach 1:
The patent replaces thermal bonding processes (welding, brazing) with mechanical joining methods such as mechanical fasteners, interference fits, or snap-fit connections. This substitution eliminates the need for high-temperature equipment while maintaining joint strength through mechanical interlocking mechanisms.
Solution Approach 2:
The patent introduces intermediary joining elements or bonding agents that enable component connection at lower temperatures. These intermediaries facilitate the joining process without requiring the base materials to reach high temperatures, thereby protecting material properties and reducing equipment requirements.
3Adaptability or versatility
If separate components are cast and then thermally bonded, then large or complex articles can be formed, but the process is costly and difficult to control
Solution Approach 1:
The patent segments the manufacturing process into independent casting and assembly stages, allowing each segment to be optimized separately. This reduces overall process complexity while maintaining the ability to assemble complex configurations from standardized components.
Solution Approach 2:
The patent changes the joining process parameters from high-temperature thermal processes to ambient or low-temperature mechanical processes. This parameter change simplifies process control, reduces equipment complexity, and maintains adaptability for various component configurations.
Data Source
AI summary
The disclosure describes example techniques and assemblies for joining a first component and a second component. The techniques may include positioning the first and second component adjacent to each other to define a joint region between adjacent portions of the first component and the second component. The techniques may also include inserting a solid retainer material into the joint region through an aperture in one of the first component or the second component to form a mechanical interlock between the first component and the second component and sealing the aperture to retain the solid retainer material within the joint region. The solid retainer material includes at least one of a metal, a metal alloy, or a ceramic.