Green Compact Construction for Wear-Resistant Machining Segments
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Solution Overview
Problem
Existing machining segments in tools like core drill bits, saw blades, and abrasive chains experience increased wear on side surfaces due to friction with substrates, particularly influenced by the wear properties of the first matrix material, and require post-processing to expose hard material particles on these surfaces.
Innovation Solution
A method for producing a green compact using a support material different from the first matrix material to partially embed second hard material particles, arranged in a defined pattern, which is then covered by an upper layer of support material, allowing for conventional tool components to be used in construction and eliminating the need for post-processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If second hard material particles are completely embedded in the first matrix material to reduce wear on side surfaces, then wear resistance is improved, but the hard material particles cannot be exposed without additional post-processing
Solution Approach 1:
The support material is applied in advance during the green compact construction process to automatically expose the second hard material particles on the side surfaces. This preliminary action eliminates the need for subsequent post-processing steps to expose the particles, thereby maintaining wear resistance while improving production efficiency
Solution Approach 2:
The support material acts as an intermediary substance that is applied to the green compact. It selectively covers the first matrix material while leaving the second hard material particles exposed on the side surfaces. This intermediary material enables the automatic exposure function without requiring additional post-processing operations
2Reliability
If a specialized construction method is used to expose hard material particles on side surfaces, then wear resistance is improved, but device complexity increases due to special tool components
Solution Approach 1:
The support material serves multiple functions: it acts as a construction medium for building the green compact, serves as a covering material for the first matrix material, and simultaneously functions as an exposing agent for the second hard material particles on side surfaces. This multi-functionality eliminates the need for specialized tool components while achieving the desired wear resistance
Solution Approach 2:
The support material has properties similar to the matrix material (powdered or granular form), allowing it to be integrated into the existing construction process using conventional tool components. This homogeneity in material form enables the use of standard equipment without requiring specialized tools, thereby reducing device complexity while maintaining wear resistance
3Reliability
If post-processing is performed to expose hard material particles on side surfaces, then wear resistance is improved, but manufacturing time increases
Solution Approach 1:
The support material is applied during the green compact construction process itself, performing the exposure function in advance. This preliminary action integrates the exposure step into the main manufacturing process, eliminating the need for separate post-processing operations and thereby reducing total manufacturing time while maintaining wear resistance
Data Source
Figure 1A~1B
Figure 2A~2B
Figure 3~4
AI summary
The invention relates to a method for producing a green body for a machining segment (51) from a pulverulent or granular first matrix material (56), first hard material particles (57) and second hard material particles (58), wherein the machining segment is connected with a bottom side (61) to a green body of a machining tool. The machining segment (51) has on the lateral surface a projection of the second hard material particles (58) with regard to the first matrix material (56).