Activator Spray Coating for Uniform Wire Arc Additive Deposition
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Solution Overview
Problem
Existing wire and arc additive manufacture technologies lack an automatic mechanism for uniformly and quantitatively coating workpieces with activators, relying on manual application which results in inconsistent coating quality.
Innovation Solution
An automatic activator coating device featuring a mechanical arm, clamping mechanism, sprayer, and gas pressure regulation system to apply activators to workpieces using helium pressure, enabling controlled and uniform coating through an atomizing nozzle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If manual coating method is used, then device complexity is reduced, but manufacturing precision and coating uniformity deteriorate
Solution Approach 1:
The patent replaces manual mechanical coating with an automated spray coating system. The sprayer mechanism uses pneumatic pressure to atomize and spray the activator coating uniformly onto the wire surface, eliminating manual application inconsistencies and achieving precise, uniform coating without complex manual operations.
Solution Approach 2:
The patent employs a gas pressure regulating valve and pneumatic pressure system to control the spray process. Gas pressure is used to atomize the activator coating material and deliver it through the sprayer at controlled rates, ensuring uniform coating application while maintaining simple device operation through pneumatic automation.
2Device complexity
If manual coating method is used, then device complexity is reduced, but productivity deteriorates
Solution Approach 1:
The automated sprayer system replaces manual coating operations, enabling continuous coating application during wire feeding. The mechanical arm or positioning system automatically moves the sprayer along the wire path, eliminating manual intervention and significantly increasing coating productivity while keeping the overall device structure relatively simple.
Solution Approach 2:
The patent enables continuous coating application by integrating the sprayer with the wire feeding process. The activator coating is applied continuously as the wire moves through the system, eliminating interruptions and manual reapplication, thereby maximizing productivity without requiring complex multi-stage coating mechanisms.
3Manufacturing precision
If automatic coating mechanism is added, then manufacturing precision is improved, but device complexity increases
Solution Approach 1:
The patent uses a gas pressure regulating valve to precisely control the pneumatic pressure driving the spray process. By regulating gas pressure, the system achieves precise control over coating quantity and application rate without requiring complex electronic control systems or multiple actuators, maintaining device simplicity while improving manufacturing precision.
Solution Approach 2:
The patent controls coating precision by adjusting key parameters such as gas pressure, spray rate, and activator coating viscosity. These parameter changes enable precise control over coating quantity and uniformity through simple mechanical and pneumatic adjustments rather than complex control mechanisms.
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
Achieves uniform and quantitative coating of workpieces during wire and arc additive manufacture, improving welding quality by ensuring consistent activator application and controlling the coating amount.
Implementation Method 1
a gas pressure regulating valve is arranged at a gas outlet of the gas bottle, and the gas pressure regulating valve is communicated with the container bottle through a gas feed pipe
Implementation Method 2
one end of the container bottle is communicated with a sprayer, one end of the sprayer is communicated with an atomizing nozzle
Data Source
AI summary
An automatic activator coating device for wire and arc additive manufacture includes a base, a mechanical arm is arranged on the upper side of the base, a clamping mechanism is arranged at the lower end of the mechanical arm, a container bottle is clamped on the clamping mechanism, one end of the container bottle is communicated with a sprayer, one end of the sprayer is communicated with an atomizing nozzle, the container bottle is communicated with the gas bottle, and a gas pressure regulating valve is arranged on the gas bottle; and a piston partition is arranged in the sprayer, the container bottle is communicated with an activator converging cavity in one end of the sprayer, a piston rod and a resetting mechanism are arranged in a mounting cavity in the other end of the sprayer, an open hole is formed in the inner surface of the sprayer.