Multi-Nozzle Laser Metal Coating for Faster Workpiece Processing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing metal-coating technologies for workpieces, such as laser deposition welding, are inefficient in terms of processing time and precision, particularly when coating multiple surfaces or large quantities of workpieces, due to limitations in deposition apparatus arrangement and movement.
Innovation Solution
The use of at least two deposition apparatuses arranged in a coating device's working space, allowing simultaneous application and melting of metal powder on workpieces, with adjustable orientations to optimize powder distribution and minimize thermal distortion, and the ability to coat multiple workpieces simultaneously using a common retaining apparatus.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a single deposition apparatus is used for metal-coating, then the device structure is simple, but the processing time per workpiece is long and productivity is low
Solution Approach 1:
The coating system is segmented into multiple independent deposition apparatuses (at least two) that can operate simultaneously on different areas or sides of the workpiece. Each deposition apparatus functions as an independent unit with its own deposition nozzle and laser source, enabling parallel processing and significantly reducing total coating time while maintaining manageable complexity through modular design
Solution Approach 2:
Multiple deposition apparatuses are merged into a single integrated coating system sharing common infrastructure including the housing, retaining apparatus, powder supply system, and control unit. This combining approach enables simultaneous multi-point coating operations while avoiding the need for multiple separate machines, thus improving productivity without proportionally increasing device complexity
2Manufacturing precision
If metal powder is applied on a horizontal workpiece surface, then powder distribution is good, but excess powder remains on the surface requiring additional cleaning
Solution Approach 1:
The workpiece orientation is inverted from the conventional horizontal position to a vertical position during the deposition process. This inversion causes excess metal powder to naturally fall away from the workpiece surface under gravity, eliminating the need for additional cleaning operations while maintaining precise coating application through the vertically oriented deposition nozzles and lasers
3Productivity
If coating is performed on one side of the workpiece at a time, then the apparatus arrangement is simple, but the processing time increases
Solution Approach 1:
The coating process extends from single-sided to multi-sided simultaneous operation by arranging deposition apparatuses in different spatial dimensions around the workpiece. At least two deposition apparatuses are positioned to coat opposite or adjacent sides of the workpiece simultaneously, adding a dimensional aspect to the coating operation that doubles productivity without requiring complex repositioning mechanisms
4Productivity
If multiple workpieces are processed sequentially, then the retaining apparatus is simple, but the overall production efficiency is low
Solution Approach 1:
The retaining apparatus is designed with multi-functionality to hold and position multiple workpieces (at least two) simultaneously within the coating chamber. This universal retaining structure enables parallel processing of multiple workpieces using the same deposition apparatuses, significantly improving overall production efficiency without requiring separate retaining mechanisms for each workpiece
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 configuration significantly reduces processing time per workpiece, enhances precision by ensuring even heat distribution, and allows for efficient handling of multiple workpieces in parallel, thereby increasing overall production efficiency.
Implementation Method 1
a laser for locally melting the metal powder on the workpiece surface to form a coating
Implementation Method 2
a deposition apparatus comprising a deposition nozzle for applying a metal powder to a workpiece surface
Data Source
AI summary
The invention relates to a coating device and to a method for metal-coating of workpieces, comprising a housing, which surrounds a working space, a retaining apparatus for retaining at least one workpiece in the working space, at least one deposition apparatus comprising a deposition nozzle for applying a metal powder to the workpiece surface to be coated, and a laser for locally melting the metal powder on the workpiece surface to form a coating, and at least one movement apparatus, by means of which the at least one deposition apparatus can be moved relative to the workpiece surface during the coating. Particularly efficient coating is made possible by at least two deposition apparatuses being arranged in the working space in the housing, which apparatuses are designed to simultaneously apply and melt metal powder.