Multi-Stage Waterjet Cutting for Screen Lining Opening Angles
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Solution Overview
Problem
Existing methods for producing screen coverings with through openings via water jet cutting are limited in achieving desired opening angles, which restricts the screening properties of the final product.
Innovation Solution
A multi-stage water jet cutting method where pre-cutting and finishing steps allow for precise control of opening angles and shapes, enabling the production of screen coverings with customizable passage openings, including circular, oval, and slit shapes, by adjusting nozzle distance, abrasive flow, water pressure, and cutting speed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If water jet cutting is used to produce through openings in screen covering, then material can be precisely removed to create openings, but the opening angle in the flow direction is limited to a very small extent
Solution Approach 1:
The water jet cutting process is divided into multiple stages: a first cutting stage that creates through openings with initial geometry, and a second finishing stage that modifies the opening angle. This segmentation allows each stage to be optimized independently, enabling precise control of the opening angle without compromising the through-opening function.
Solution Approach 2:
The first cutting stage performs preliminary removal of material to create through openings with a preliminary opening angle. This preliminary action enables the second stage to focus solely on optimizing the final opening angle, thereby achieving greater versatility in screening properties while maintaining manufacturing precision.
2Productivity
If single-stage water jet cutting is used, then production time is reduced, but the opening angle cannot be optimized for desired screening properties
Solution Approach 1:
The cutting process is segmented into multiple stages with each stage serving a specific function. The first stage rapidly removes material to create through openings, while the second stage precisely controls the opening angle. This segmentation maintains high productivity by automating the multi-stage process while achieving the manufacturing precision needed for optimized screening properties.
3Object-affected harmful factors
If the opening angle is increased to reduce clogging, then flow resistance decreases, but manufacturing precision is compromised with conventional methods
Solution Approach 1:
The first cutting stage creates through openings with a preliminary geometry that allows subsequent optimization. This preliminary action enables the second stage to precisely adjust the opening angle to reduce clogging and flow resistance while maintaining manufacturing precision through controlled water jet parameters in the finishing stage.
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 allows for a wide range of opening angles and shapes, reducing clogging and flow resistance, thereby enhancing the screening efficiency and versatility of the screen coverings for use in various applications.
Implementation Method 1
through openings being made in a blank by means of water jet cutting
Implementation Method 2
Material is removed during water jet cutting with water under high pressure and in particular an abrasive additive such as corundum
Data Source
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AI summary
A method for producing a screen layer (1), wherein openings (2) are introduced into a blank by means of waterjet cutting, the waterjet cutting being carried out in several steps, wherein in a first step the openings (2) of the screen layer (1) are pre-cut and in at least a second step the openings (2) of the screen layer (1) are finished. A screen layer (1) produced in this way is further illustrated.