Segmented Wear-Resistant Element for Comminuting Device
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Solution Overview
Problem
Comminution devices, such as grinding rollers, experience high wear on their surfaces, leading to frequent replacements of wear protection elements, resulting in long downtimes and high maintenance costs.
Innovation Solution
A wear protection element with a fastening area made of a less wear-resistant material, such as steel, and a wear area made of advanced ceramic materials, designed for partial insertion into a recess on the surface, where the wear area protrudes and is exposed to most of the wear, allowing for cost-effective production and easy replacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the entire wear protection element is made of wear-resistant material, then wear resistance is improved, but manufacturing cost increases
Solution Approach 1:
The wear protection element features a wear area made of wear-resistant material (such as ceramic) that protrudes from the surface, while the fastening area is made of less expensive material (such as steel). This local differentiation ensures wear resistance is concentrated only where needed (the wear area), while reducing material costs in non-wear zones (the fastening area), thereby resolving the contradiction between wear resistance and manufacturing cost.
2Duration of action of stationary object
If wear protection elements are made with high wear resistance, then maintenance intervals are extended, but production cost increases
Solution Approach 1:
The invention applies wear-resistant material only to the wear area that protrudes from the surface and is exposed to wear, while the fastening area remains made of conventional material. This localized approach extends maintenance intervals by protecting the critical wear surface without requiring the entire element to be made of expensive wear-resistant material, thus achieving extended service life at reduced production cost.
3Reliability
If the wear area protrudes from the surface, then wear protection effectiveness is improved, but the fastening area becomes more complex
Solution Approach 1:
The wear protection element is segmented into two distinct functional areas: a wear area made of wear-resistant material that protrudes from the surface to provide wear protection, and a fastening area made of conventional material that is recessed or flush with the surface for secure mounting. This segmentation allows each area to be optimized for its specific function, improving wear protection effectiveness while keeping the fastening area design relatively simple through clear functional separation.
Data Source
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AI summary
The invention relates to a wear-resistant element (16c) for partial insertion into a recess on a surface of a wear area of a comminuting device, the wear-resistant element (16c) comprising a fastening section (24) which can be connected to the recess on the surface of the wear area and has a wear portion (22) that protrudes at least in part from the surface of the wear area. According to the invention, the fastening section (24) comprises a material that has a lower wear resistance than the material of the wear portion (22), the wear portion (22) extends beyond the fastening section (24) in the vertical direction of the wear-resistant element (16c), and the fastening section (24) is in the form of a sleeve.