Horizontal Rib Laser Cladding on Unequal-Height Sections
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Solution Overview
Problem
Existing methods for creating horizontal ribs on unequal-height sections, such as machining, welding, and casting, are inefficient, leading to material waste, deformation, or long processing cycles.
Innovation Solution
A method using laser cladding with varying scanning speeds to segment the rib, where the first and last segments have deceleration phases to prevent collapse, allowing for direct formation of a horizontal rib with high precision and parallelism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If machining is used to process ribs on unequal-height sections, then processing precision can be achieved, but time consumption and material waste increase significantly
Solution Approach 1:
The patent replaces traditional mechanical machining methods with laser cladding technology. The laser beam melts and deposits material directly onto the unequal-height section to form ribs, eliminating the need for mechanical cutting and material removal. This substitution of mechanical processing with thermal processing achieves both high precision and improved productivity.
Solution Approach 2:
The patent changes the processing approach from subtractive machining to additive cladding by modifying the fundamental parameter of material removal versus material deposition. By controlling laser power, scanning speed, and deposition rate, the process achieves precise rib formation without material waste and with reduced processing time.
2Strength
If welding is used to join ribs on unequal-height sections, then structural strength can be achieved, but deformation occurs during the process
Solution Approach 1:
The patent changes the joining mechanism from thermal welding to controlled laser cladding. By precisely controlling laser parameters (power density, scanning speed, hatch spacing) and deposition rate, the process achieves strong metallurgical bonding between the rib and substrate while minimizing thermal input that causes deformation. The additive nature allows real-time compensation for dimensional variations.
3Adaptability or versatility
If casting is used to form ribs on unequal-height sections, then complex shapes can be achieved, but processing cycle time increases and subsequent processing is required
Solution Approach 1:
The patent replaces the multi-step casting process (mold making, pouring, cooling, extraction, finishing) with direct laser cladding. The laser beam selectively deposits material layer by layer to form complex rib geometries directly on the substrate, eliminating the need for physical molds and subsequent extraction operations. This achieves complex shapes with significantly reduced cycle time and without requiring post-processing.
Solution Approach 2:
The patent performs preliminary action by directly depositing the rib structure in its final configuration through controlled laser cladding. The process builds the rib incrementally with precise control over geometry, surface finish, and material properties, eliminating the need for subsequent machining or finishing operations that would be required after casting.
4Ease of operation
If constant scanning speed is used during laser cladding, then process simplicity is maintained, but horizontal rib formation on unequal-height sections cannot be achieved
Solution Approach 1:
The patent introduces dynamic control of the scanning speed during laser cladding. The scanning speed is continuously adjusted based on the real-time height information of the substrate surface. When the laser encounters higher regions, the speed increases to reduce deposition height; when encountering lower regions, the speed decreases to increase deposition height. This dynamic speed modulation maintains a constant relative position between the laser and substrate, achieving horizontal rib formation on uneven surfaces.
Solution Approach 2:
The patent implements feedback control by using height sensor data to continuously adjust the scanning speed in real-time. The system monitors the substrate topography and feeds this information back to the motion control system, which modifies the scanning speed accordingly. This closed-loop control ensures that ribs are deposited at a consistent height above the varying substrate surface, achieving horizontal levelness despite the unequal-height base.
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 achieves a high deposition rate, efficient material utilization, and eliminates the need for subsequent processing, resulting in a firm and parallel horizontal rib structure.
Implementation Method 1
laser cladding technology is a new technology developed by combining laser cladding technology and rapid prototyping technology
Implementation Method 2
use a laser cladding method to deposit a material layer by layer
Implementation Method 3
utilizes the effect of the scanning speed change on the height of a clad layer to obtain a horizontal rib by cladding
Data Source
AI summary
The present invention relates to a method for depositing a horizontal rib on an unequal-height section by laser cladding, including the following steps: providing an unequal-height section and a laser cladding device, determining a deposition position on the unequal-height section, and determining a length of a rib on the unequal-height section according to the deposition position; using a lowest point of the deposition position as a first segment of the rib and a highest point as a last segment of the rib; determining a number of segments of the rib according to the length and a vertical height of each segment of the rib; determining a cladding speed of each segment of the rib according to a relationship between a cladding height of each segment of the rib and a scanning speed under a certain parameter, and carrying out laser cladding to obtain a horizontal rib.