Beam Processing With Local Non-Immersion Liquid Cooling
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Solution Overview
Problem
Existing 3D printing and laser processing technologies face issues with warp and deformation due to beam irradiation, particularly in metal 3D printing, where the processing of target portions on surfaces is not effectively managed, leading to suboptimal results in terms of accuracy and resolution.
Innovation Solution
A processing method and system that involves supplying a liquid and creating a non-liquid-immersion state on the target surface area, allowing the beam to be irradiated directly without passing through the liquid, thereby preventing deformation and enhancing processing accuracy and resolution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a beam is irradiated on a target portion through liquid, then cooling effect is provided to prevent overheating, but the beam intensity is reduced and processing accuracy deteriorates
Solution Approach 1:
The liquid medium is segmented into discrete droplets rather than a continuous pool, allowing the beam to pass through air gaps between droplets while still receiving cooling benefits from liquid contact at the target surface
Solution Approach 2:
The system transitions from a two-dimensional liquid surface contact to a three-dimensional droplet distribution pattern, creating multiple liquid-beam interaction points while maintaining an overall non-immersion state for the beam path
2Ease of manufacture
If a liquid pool is used for beam processing, then material deposition and cooling are facilitated, but beam scattering occurs and resolution is reduced
Solution Approach 1:
Different regions of the processing area have different liquid configurations - droplets are positioned to provide cooling and deposition support where needed, while leaving the beam path region relatively clear to maintain resolution
Solution Approach 2:
Gas-phase intermediaries (air or inert gas) are introduced between the liquid droplets and the beam path, allowing the beam to maintain its intensity while liquid droplets provide the necessary cooling and material delivery functions
3Quantity of substance
If the beam irradiates the target in immersion state, then material supply is improved, but warp and deformation occur due to uncontrolled thermal effects
Solution Approach 1:
Liquid droplets are supplied in periodic pulses rather than continuous flow, allowing thermal cycles that prevent excessive heat accumulation and resulting warp while maintaining adequate material supply
Solution Approach 2:
The physical state of the liquid is changed from continuous immersion to discrete droplet form, fundamentally altering the thermal interaction parameters between beam, liquid, and target to prevent deformation
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 effectively prevents warp and deformation, improving the accuracy and resolution of 3D printing and laser processing by ensuring the beam is applied in a controlled, non-liquid-immersion state, resulting in higher quality three-dimensional shaped objects with enhanced precision.
Implementation Method 1
a liquid processing device which processes liquid supplied from the liquid supply device so that a non-liquid-immersion state is generated locally in a partial area including a target portion on a predetermined surface
Data Source
AI summary
The processing system is provided with: a liquid supply device which can supply a liquid; a liquid processing device which processes a liquid supplied from the liquid supply device such that a non-liquid-immersion state is generated locally in a partial area including a target portion on a predetermined surface; a beam irradiation section which emits beams toward the target portion; and a moving apparatus which moves the predetermined surface. The beams are irradiated on the target portion to apply a predetermined processing to the target portion, in a state in which the target portion is in the non-liquid-immersion state.