Continuous 3D Ceramic Body Formation via Inhibition Zone Control
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Solution Overview
Problem
The production of ceramic three-dimensional bodies via layer-by-layer construction of radiation curable ceramic slurries is slow and lacks uniformity, density, and strength, limiting their application in industries such as automotive, aerospace, and medicine.
Innovation Solution
A method involving radiation curing of a mixture with solid particles, where an inhibition zone is created by varying the thickness of an inhibitor layer, allowing for the formation of regions with different densities by controlling the exclusion of solid particles based on size, enabling continuous formation of three-dimensional bodies with improved mechanical properties and uniformity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If layer by layer construction of radiation curable ceramic slurries is used, then three-dimensional ceramic bodies can be manufactured, but production speed is very slow
Solution Approach 1:
The patent implements continuous forming by maintaining a constant interface between the inhibition zone and remaining mixture, allowing uninterrupted radiation curing and body growth. The carrier plate moves continuously through the mixture while radiation is applied, eliminating the stop-start nature of traditional layer-by-layer construction and achieving sustained production speed.
2Manufacturing precision
If layer by layer construction of radiation curable ceramic slurries is used, then three-dimensional ceramic bodies can be manufactured, but uniformity and density are poor
Solution Approach 1:
The patent creates distinct regions within the three-dimensional body by controlling the inhibition zone thickness and translating portion position. This allows different areas to have different solid particle exclusion characteristics, enabling localized control over density and composition while maintaining overall process efficiency.
Solution Approach 2:
The inhibition zone thickness and translating portion position are dynamically adjusted during the forming process to control solid particle exclusion. This dynamic control mechanism allows real-time optimization of density distribution throughout the body, improving uniformity without sacrificing production speed.
3Strength
If layer by layer construction of radiation curable ceramic slurries is used, then three-dimensional ceramic bodies can be manufactured, but strength is insufficient
Solution Approach 1:
The patent modifies key process parameters including inhibition zone thickness, translating portion position, and radiation curing conditions to optimize both strength and production speed. By controlling solid particle size exclusion and density distribution through parameter adjustment, the method achieves superior mechanical properties while maintaining continuous high-speed manufacturing.
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 enhances production speed and achieves three-dimensional bodies with regions of varying densities, improving mechanical properties and uniformity, suitable for complex structures in diverse industrial applications.
Implementation Method 1
The mixture (16) comprises a radiation curable material and solid particles and is subject to electromagnetic radiation (14) having a wavelength of 370 nm to 450 nm, wherein the electromagnetic radiation (14) transforms the mixture (16) from liquid to solid state
Implementation Method 2
an inhibition zone (17) defined as a zone of the mixture (16) which is distinguished from the remaining part of the mixture (16) by the presence of an inhibitor in a concentration that avoids curing of the mixture (16) when exposed to radiation
Data Source
Figure 1A~1B
Figure 2A~2B
Figure 3
AI summary
A method for continuously forming a three-dimensional body from a mixture, wherein the mixture can comprise solid particles and a radiation curable material. The method allows the continuous production of a three-dimensional body having at least one first region and at least one second region, wherein the at least one first region and the at least one second region can be different from each other based upon one or more criteria, such as density, content of solid particles, or average particle size.