Multi-Material Additive Attachment Structure for Crack-Resistant Tooling
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional additive manufacturing processes face challenges in creating tooling with high carbon content, as they are prone to cracking due to high carbon levels, and existing methods struggle to achieve the necessary hardness and durability while maintaining structural integrity.
Innovation Solution
The use of an additive manufacturing system with an electrode head featuring multiple electrodes of varying ductility and hardness, allowing for controlled deposition of materials to form parts with distinct interior and exterior properties, including a transition zone that blends materials to reduce stress and enhance durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If high carbon content material is used to create hard tooling, then hardness and wear resistance are improved, but the material becomes brittle and prone to cracking
Solution Approach 1:
The patent applies local quality by creating a tooling structure with non-uniform material composition - the exterior surface contains high carbon content for hardness and wear resistance, while the interior contains lower carbon content for ductility and crack resistance. This gradient structure allows each region to have the specific properties needed for its function.
Solution Approach 2:
The patent uses composite materials by combining different carbon content regions within a single tooling component. The multi-material approach creates a composite structure where hard high-carbon exterior material is integrated with more ductile low-carbon interior material, achieving both hardness and crack resistance in the overall component.
2Device complexity
If traditional single-material additive manufacturing is used, then process simplicity is maintained, but the ability to create parts with different mechanical properties in different regions is limited
Solution Approach 1:
The patent implements local quality by enabling different material compositions to be deposited in different regions of the part during the additive manufacturing process. The system can switch between materials with different carbon contents based on the current deposition location, allowing tailored mechanical properties for different functional regions.
Solution Approach 2:
The patent applies dynamics by making the material selection process dynamic and adaptive during manufacturing. Rather than using a fixed single material throughout, the system dynamically adjusts material composition based on real-time requirements of different part regions, enabling versatile property variation while maintaining process 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
This approach enables the creation of tooling with reduced crack propagation and improved durability by utilizing a combination of ductile and hard materials, allowing for efficient production of parts that can withstand various manufacturing processes and environmental conditions.
Implementation Method 1
an electrode head comprising an array of multiple electrodes for depositing material layer by layer to form a three-dimensional (3D) attachment structure
Implementation Method 2
depositing material layer by layer to form a three-dimensional (3D) attachment structure connecting first and second prefabricated metallic parts
Implementation Method 3
A power source is configured to provide power for heating each electrode of the array of multiple electrodes
Data Source
AI summary
An additive manufacturing system includes an electrode head comprising an array of electrodes for depositing material to form a three-dimensional attachment structure connecting first and second prefabricated metallic parts. The array includes a first plurality of electrodes formed from a first metallic material having a first ductility and a first hardness, and a second plurality of electrodes formed from a second metallic material having a second ductility and a second hardness, wherein the first ductility is greater than the second ductility and the second hardness is greater than the first hardness. A power source provides power for heating each electrode. A drive roll system drives each electrode. A controller is connected to the power source to control operations of the additive manufacturing system to form an interior portion of the attachment structure using the first plurality of electrodes, and control the operations of the additive manufacturing system to form an exterior portion of the attachment structure using the second plurality of electrodes, such that ductility of the interior portion of the attachment structure is greater than ductility of the exterior portion of the attachment structure.