Multi-Material Pump Housing With Lightweight Functional Regions
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Solution Overview
Problem
Existing housings for flow-conducting components, such as centrifugal pumps, require multiple additional steps and materials to meet the diverse demands of different functional regions, including load-bearing, wear-resistant, and sealing properties, which complicates manufacturing and increases costs.
Innovation Solution
A housing for flow-conducting components is designed with multiple functional regions made from different build materials, optimized through additive manufacturing methods, allowing for the creation of complex geometries and material combinations that meet specific functional demands in a single process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional casting methods are used with coatings and reinforcements to meet different functional demands, then the required properties (strength, wear resistance) are achieved, but the manufacturing complexity and number of steps increase significantly
Solution Approach 1:
The patent combines multiple manufacturing steps (casting, coating, reinforcement) into a single additive manufacturing process. Different materials are deposited layer-by-layer directly in their final positions, merging what were previously separate sequential operations into one integrated process that produces the housing with varied material properties throughout.
Solution Approach 2:
The additive manufacturing process enables different build materials to be selectively deposited in different regions of the housing. Load-bearing areas receive high-strength materials, wear-prone areas receive wear-resistant materials, and sealing areas receive sealing-optimized materials, allowing each functional region to have locally optimized properties without requiring post-manufacturing treatments.
2Reliability
If multiple materials and reinforcements are used to optimize different functional regions, then the required performance is achieved, but the housing weight increases
Solution Approach 1:
The patent applies the principle of local quality by selectively placing different materials only where their specific properties are needed. High-strength materials are used in load-bearing regions, wear-resistant materials in contact areas, and sealing materials in sealing regions, rather than using heavy materials throughout the entire housing. This localized material placement optimizes performance while minimizing unnecessary weight.
3Manufacturing precision
If comprehensive working and intensive treatment of functional regions are performed, then the required material properties are achieved, but the manufacturing cost and time increase
Solution Approach 1:
The patent merges multiple post-manufacturing treatment steps (coating, reinforcement, heat treatment) into the single additive manufacturing process itself. The required material properties are achieved during the building process through selective material deposition and in-situ processing, eliminating the need for separate treatment steps and significantly improving manufacturing efficiency.
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 solution enables the production of lightweight, high-strength housings with optimized functional regions, reducing manufacturing complexity and costs while improving performance and facilitating easier replacement parts exchange.
Implementation Method 1
each functional region is generated from a different build material in order to achieve the ideal properties of the functional regions. Advantageously, the housing with all the required functional regions is formed in a single additive manufacturing method.
Implementation Method 2
The build material preferably comprises metallic powder particles, especially low-alloyed and/or high-alloyed steel powder particles, and/or fusible polymer and/or a metal-polymer hybrid material.
Data Source
AI summary
A method for forming a housing for a flow-conducting component includes forming at least two functional regions of the housing having different material properties using at least one of radiation-induced melting and solidification of a build material and a process gas jet. Each functional region of the housing may be generated from a different construction material, and at least one functional layer may be formed with a reduced weight structure such as a honeycomb structure.