Ceramic 3D Printing Viscosity Control via Temperature
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Solution Overview
Problem
Current three-dimensional fabrication methods, such as binder jetting, face challenges in achieving high-density and high-precision objects due to limitations in controlling viscosity and preventing warping and shrinkage during the fabrication process.
Innovation Solution
A method involving the formation of a powder layer with ceramic material, application of a liquid, and controlled heating to maintain a temperature between 30°C and 60°C, which results in a viscosity range of 1,000 Pa·s to 100,000 Pa·s, allowing for high-density and high-precision object creation by filling voids and minimizing shrinkage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If binder jetting method is used to produce three-dimensional objects, then fabrication capability is achieved, but viscosity control and warping prevention are insufficient
Solution Approach 1:
The patent applies parameter changes by precisely controlling the heating temperature (30-60°C) and duration to achieve the target viscosity range (1,000-100,000 Pa·s). This temperature parameter optimization enables reliable viscosity control during fabrication, resolving the contradiction between fabrication precision and viscosity control stability.
Solution Approach 2:
The patent applies preliminary anti-action by pre-heating the powder layer to controlled temperatures before liquid binder application. This preliminary heating prevents excessive warping and shrinkage during subsequent drying and curing processes, thereby improving fabrication precision while maintaining viscosity control.
2Stability of the object's composition
If heating temperature is increased to reduce viscosity, then material flowability improves, but warping and shrinkage increase
Solution Approach 1:
The patent optimizes the heating temperature parameter to a specific range (30-60°C) that achieves sufficient material flowability for binder penetration while preventing excessive thermal expansion and subsequent warping. This parameter optimization resolves the contradiction between material stability and shape stability.
Solution Approach 2:
The patent applies dynamics by implementing controlled heating that adapts to the specific requirements of different fabrication stages. The dynamic temperature control ensures optimal viscosity for binder application while minimizing thermal stress-induced deformation, balancing material stability and shape stability.
3Quantity of substance
If viscosity is reduced to improve binder penetration, then liquid distribution improves, but structural integrity decreases
Solution Approach 1:
The patent controls viscosity within an optimal range (1,000-100,000 Pa·s) rather than minimizing it. This viscosity optimization ensures sufficient binder penetration into the powder layer while maintaining the structural integrity of the green body, resolving the contradiction between binder penetration efficiency and structural integrity.
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 method effectively produces high-density and high-precision three-dimensional objects by controlling viscosity, preventing warping, and ensuring stable fabrication, with the ability to adjust viscosity through material combinations and processes, and further enhancing precision and strength.
Implementation Method 1
heating the powder layer applied with the liquid. In the heating, a temperature of the powder layer applied with the liquid is controlled to 30° C. or higher and 60° C. or lower
Data Source
AI summary
A method for producing a three-dimensional fabricated object is provided that includes: forming a powder layer with a powder containing a ceramic material; applying a liquid on the powder layer, and heating the powder layer applied with the liquid, in which, in the heating, a temperature of the powder layer applied with the liquid is controlled to 30° C. or higher and 60° C. or lower, and a fabricated object obtained by repeating the forming and the applying once or more has a viscosity of 1,000 Pa·s or higher and 100,000 Pa·s or lower.