Homogeneous Build Platform for Superalloy Additive Manufacturing
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Solution Overview
Problem
In additive manufacturing of turbine components from high-performance materials like superalloys, the composition of the substrate significantly affects the deposition process, leading to uncontrollable variations and reproducibility issues due to small impurities or phase transitions, which can destroy the desired material properties.
Innovation Solution
A building platform with a homogeneous surface region produced using additive manufacturing methods like beam melting or sintering, ensuring a single-phase or macroscopically homogeneous composition that extends sufficiently deep to prevent substrate impurities from affecting the component's properties, thereby ensuring reproducible results.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional substrates produced by fine casting technology are used, then manufacturing flexibility is improved, but material composition homogeneity deteriorates due to uncontrollable variations and impurities
Solution Approach 1:
The building platform is designed with a homogeneous surface region that has uniform chemical and physical properties throughout. This homogeneity is achieved by producing the entire platform through additive manufacturing using identical material composition, eliminating the substrate variations and impurities inherent in conventional fine casting technology. The homogeneous structure ensures consistent deposition results across the entire building surface.
Solution Approach 2:
The invention changes the manufacturing method parameter from conventional fine casting to additive manufacturing. This parameter change fundamentally alters the material composition characteristics, transforming the substrate from having uncontrollable variations to having precise, homogeneous composition. The additive manufacturing process allows for controlled material deposition that eliminates impurities like oxygen traces while maintaining manufacturing flexibility.
2Adaptability or versatility
If substrates with varying composition are used, then adaptability to different manufacturing conditions is improved, but manufacturing precision deteriorates due to uncontrollable deposition results
Solution Approach 1:
The building platform maintains homogeneous chemical and physical properties across its surface region, ensuring that deposition results are consistent and predictable. This homogeneity provides a stable baseline that enables precise manufacturing while still allowing adaptation to different manufacturing conditions through process parameter optimization rather than substrate variation.
Solution Approach 2:
The building platform is pre-designed and manufactured with the exact homogeneous properties needed for precise deposition before the actual component manufacturing begins. This preliminary action of creating a controlled substrate eliminates the need to compensate for substrate variations during manufacturing, thereby improving deposition precision while maintaining process adaptability.
3Ease of manufacture
If beam melting or beam welding methods are used on heterogeneous substrates, then manufacturing capability is improved, but reliability deteriorates due to diffusion of impurities into the component
Solution Approach 1:
The building platform is constructed with homogeneous material composition that eliminates impurities such as oxygen traces and unwanted elements. This homogeneous, high-purity substrate prevents diffusion of harmful impurities into the component during beam melting or welding processes, thereby maintaining component reliability while preserving manufacturing capability.
Solution Approach 2:
The building platform serves as a consumable substrate that is specifically designed for additive manufacturing and can be discarded after use. By using a dedicated, disposable platform with controlled composition rather than attempting to reuse or repurpose conventional substrates, the system ensures consistent material purity for each manufacturing run without the risk of accumulated impurities.
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 use of a homogeneous building platform in additive manufacturing improves the reproducibility and material properties of the components by maintaining consistent chemical and physical properties, reducing the impact of substrate variations and ensuring reliable production.
Implementation Method 1
The beam melting methods include, in particular, selective laser melting (SLM) or electron beam melting (EBM)
Implementation Method 2
the additive manufacturing method can be a sintering method, for example selective laser sintering (SLS)
Implementation Method 3
The stated beam welding methods include, for example, electron beam welding or laser deposition welding (LMD), in particular laser powder deposition welding
Data Source
AI summary
A construction platform for the additive manufacturing of a component, in particular from a superalloy, wherein the construction platform has a surface region that is produced by an additive manufacturing method, wherein the additive manufacturing method is a beam melting or beam welding method. A construction platform is used as a substrate for the additive manufacturing of a component, in particular from a superalloy. A method includes the additive manufacturing of the construction platform, wherein a surface region of the construction platform is produced by a beam melting or beam welding method.