Additive Manufacturing Device for High-Pressure Sintering
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current additive manufacturing technologies face limitations in producing complex machine parts that require high-pressure and high-temperature processing, especially when dealing with multiple materials and precise control of material flow, as existing methods struggle to achieve the necessary pressure and temperature conditions for sintering or synthesis.
Innovation Solution
The proposed Additive Manufacturing Device (AMD) incorporates a hydraulic cylinder, mold, heating element, and compressor to create a pressurized container for sintering or high-temperature synthesis, with a flow control assembly using vibrating straws and loudspeakers to precisely control material flow, and a kiln assembly utilizing thermal expansion for achieving high pressures, enabling the use of multiple materials and precise temperature control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If conventional additive manufacturing methods are used, then manufacturing simplicity is maintained, but high pressure and high temperature processing capabilities are insufficient
Solution Approach 1:
The patent combines the additive manufacturing deposition system with a high-pressure high-temperature processing system into an integrated apparatus. The mold assembly includes both the material deposition channel and the pressurization/heating chambers, allowing sequential layer deposition followed by in-situ sintering without transferring samples between devices.
Solution Approach 2:
The mold assembly serves multiple functions: it acts as the containment structure for material deposition, the pressure vessel for gas pressurization, the heating chamber for thermal processing, and the reaction container for synthesis. This multi-functional design eliminates the need for separate equipment for each process step.
2Manufacturing precision
If material flow control is simplified, then device complexity is reduced, but precise control of material deposition is compromised
Solution Approach 1:
The patent employs vibration motors mounted on the mold assembly to induce mechanical vibrations in the powder material within the deposition channel. This vibration prevents material clogging, promotes uniform flow, and ensures consistent layer deposition by breaking up agglomerates and maintaining material mobility throughout the deposition process.
3Reliability
If high pressure processing is implemented, then sintering quality is improved, but the device structure becomes more complex
Solution Approach 1:
The patent uses a gas pressurization system where compressed gas is introduced into the sealed mold chamber to apply uniform high pressure to the powder layers. This pneumatic approach is simpler than mechanical pressing systems, as it provides even pressure distribution across the entire sample area without requiring complex mechanical linkages or moving pressing components.
Solution Approach 2:
The system dynamically adjusts processing parameters including gas pressure levels, heating temperature, and vibration frequency based on the specific material being processed and the desired outcome. These parameter changes are controlled through a microcontroller that monitors and regulates the pressurization and heating processes to optimize sintering quality for different materials and geometries.
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 solution allows for the production of complex parts with higher precision and efficiency by achieving pressures up to 1378 MPa and temperatures suitable for sintering or synthesis, overcoming the limitations of existing technologies in handling multiple materials and ensuring precise control of material deposition and processing.
Implementation Method 1
the heating element provides heat within the pressurized container, thus over the material to further increase the pressure and to perform sintering or high-temperature synthesis of the material
Implementation Method 2
the compressor injects pressurized gas in the container to increase a pressure within the pressurized container
Implementation Method 3
the material deposition station further comprises a driving speaker to vibrate the vibrating straw and thereby control a flow of material therein
Data Source
Figure 1
Figure 2
Figure 3
AI summary
An additive manufacturing device (AMD) for manufacturing objects through deposition of superposed layers of material in a granulate or powder form, the AMD comprising: a hydraulic cylinder; a mold for sealable attachment to the hydraulic cylinder; a material deposition station having an outlet for depositing the material in the mold layer-by-layer; a heating element; and a compressor. Between the deposition of one or more layers of material in the mold, the mold and the hydraulic cylinder are sealably attached to form a pressure container, the compressor injects gas in the container to increase a pressure within the pressure container and the heating element provides heat within the pressure container to further increase the pressure and to perform sintering or high-temperature synthesis of the material while submitting the material to the pressure.