Metal Foil Preform Bulging for Uniform Thin-Walled IMC Components
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional methods struggle to manufacture complex thin-walled components from high-temperature resistant intermetallic compounds like TiAl and NiAl due to difficulties in preparing and deforming sheets/tubes at room and warm temperatures, leading to wall thickness irregularities and structural issues.
Innovation Solution
An integrated method involving preforming by laying metal foil strips, where a support die is designed, foil strips are alternately laid and processed to form a laminated preform, followed by bulging and reactive synthesis in a controlled environment to achieve a complex shape with uniform wall thickness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If conventional forming methods are used to shape thin-walled components from IMC sheets/tubes, then the component shape can be obtained, but wall thickness irregularities and structural defects occur due to large deformation
Solution Approach 1:
The patent applies preliminary action by creating a preform structure before final forming. The IMC sheet is first formed into a preform with a cavity structure that matches the target component geometry, then material is laid into this preform cavity. This preliminary structure guides material distribution and reduces the deformation required in the final forming step, preventing wall thickness irregularities.
Solution Approach 2:
The patent segments the manufacturing process into distinct stages: preform creation, material laying, and final forming. The preform itself is created by segmenting the IMC sheet into layers that are sequentially formed. This segmentation allows each stage to be optimized independently, with the preform stage preparing the geometry and the final stage completing the shape with minimal deformation.
2Ease of manufacture
If IMC sheets are prepared by conventional methods, then sheet material can be obtained, but the sheets are difficult to deform at room and warm temperatures
Solution Approach 1:
The patent applies parameter changes by transitioning from room temperature to high temperature during the forming process. The IMC sheets are prepared at room temperature where they are easy to handle, then heated to high temperatures where they become sufficiently deformable. This parameter change (temperature) resolves the contradiction between ease of manufacture and ease of operation.
Solution Approach 2:
The patent performs preliminary actions at room temperature including sheet preparation, cleaning, and preform creation. These preliminary steps are completed when the material is easy to handle, before heating for the deformation-intensive forming stage. This separation of preliminary actions from the main forming operation resolves the contradiction.
3Device complexity
If simple sheets are used as preforms, then the preparation process is simplified, but large and complex deformation is required leading to local thinning and cracking
Solution Approach 1:
The patent performs preliminary actions to create a preform with a cavity structure that pre-defines the material distribution. This preform is created before the final forming operation, establishing a framework that guides material flow and prevents excessive deformation. The preliminary preform structure maintains reliability by reducing the magnitude of deformation required in the final step.
Solution Approach 2:
The preform acts as an intermediary structure between the simple IMC sheet and the final complex component. Rather than directly forming the final shape from a simple sheet (which causes large deformation), the preform serves as an intermediate structure that simplifies the material distribution, allowing the final forming to proceed with minimal deformation and maintained structural integrity.
4Shape
If large deformation is applied to simple preforms, then component shape can be achieved, but local thinning, cracking and wrinkling occur
Solution Approach 1:
The patent creates a preform with a cavity structure that matches the target component geometry before final forming. This preliminary structure pre-positions the material to match the final shape requirements, reducing the deformation magnitude needed. The preliminary action of creating this guided cavity structure prevents surface defects by ensuring material flows uniformly without excessive stretching.
Solution Approach 2:
The preform serves as an intermediary that mediates between the simple IMC sheet and the final complex component shape. It provides a structural framework that guides material distribution and prevents localized excessive deformation. This intermediary structure ensures that the transition from simple sheet to complex shape occurs uniformly, maintaining surface quality while achieving the target geometry.
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
This method enables the production of thin-walled components with complex structures and uniform wall thickness, reducing deformation issues and enhancing structural integrity and dimensional accuracy, while being cost-effective and environmentally friendly.
Implementation Method 1
subjected to a first reactive synthesis and a densification process under high temperature and pressure in the bulging die to obtain a complex thin-walled alloy component
Implementation Method 2
subjected to a first reactive synthesis and a densification process under high temperature and pressure in the bulging die
Implementation Method 3
a large-sized Ni foil and a large-sized Al foil are alternately laminated and hot-pressed into a sheet
Data Source
AI summary
An integrated method for manufacturing a high-temperature resistant thin-walled component by preforming by laying a metal foil strip. The integrated manufacturing method includes: designing a preform, preparing a support die, determining a thickness of a foil strip, determining a width of the foil strip, developing a laying process, laying an A foil strip and a B foil strip, obtaining an AB laminated preform, bulging the preform, performing a reactive synthesis and a densification process of a bulged component, and performing a subsequent treatment of the thin-walled component. Various embodiments obtain an integral thin-walled preform with a complex structure, a uniform wall thickness and a shape close to the final part by continuously laying a metal foil strip with an appropriate width.