Sintered Body Tagging for Readable Post-Sintering Traceability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current methods for manufacturing sintered cutting tools lack effective traceability, making it difficult to individually identify and log information about usage and manufacturing conditions, especially during the production and recycling processes.
Innovation Solution
A method involving the formation of a green body with a metallic binder phase and an organic binder system, where a readable tag is created on the surface using laser modification or mechanical impressing, allowing the tag to survive sintering and provide individual identification of both the green and sintered bodies, enabling data logging and traceability through a central database.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If a readable tag is formed on the green body surface, then individual traceability is improved, but the tag may become unreadable after sintering due to volume shrinkage
Solution Approach 1:
The tag pattern is formed on the green body surface before sintering with predetermined dimensions that account for the expected volume shrinkage. By calculating and compensating for the shrinkage ratio in advance, the tag is positioned and sized to remain readable after the sintering process reduces the green body volume by 40-50%.
Solution Approach 2:
The physical and chemical properties of the binder system are modified to control shrinkage behavior. By adjusting binder composition and degradation characteristics, the shrinkage process is made more predictable and uniform, ensuring that tags formed at specific positions remain readable after sintering.
2Productivity
If green bodies are produced in large batches and regrouped, then production efficiency is improved, but individual traceability is lost
Solution Approach 1:
The batch production process is segmented by assigning unique identifier tags to each individual green body before batching. This allows large batches to be processed efficiently while maintaining the ability to trace and retrieve information about each individual component through its unique tag, effectively dividing the batch into individually identifiable units.
Solution Approach 2:
A data logging system reads and stores information from tags on individual green bodies during various production steps. This feedback mechanism captures manufacturing data for each body and links it to the unique tag identifier, enabling traceability even when bodies are processed in large batches and regrouped.
3Reliability
If the tag pattern is formed on the green body surface, then individual identification is enabled, but the pattern may be distorted or lost during sintering
Solution Approach 1:
The tag pattern is formed with predetermined characteristics that anticipate and compensate for sintering effects. By calculating the expected shrinkage and distortion based on the binder system properties, the pattern is designed in advance to maintain readability and integrity after the sintering process.
Solution Approach 2:
The binder system is formulated and the tag pattern is designed to accommodate and cushion against the effects of sintering shrinkage. The pattern dimensions and positioning are pre-adjusted to compensate for the 40-50% volume reduction, ensuring the tag remains stable and readable despite the compositional changes during sintering.
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 significantly enhances traceability and data logging for individual sintered bodies, allowing for improved quality control, recycling, and tailored processing parameters, even across large batches, by ensuring the tag remains readable before and after sintering and post-processing operations.
Implementation Method 1
forming a pattern in a surface of the green body such as to provide a tag enabling individual identification of the green body
Implementation Method 2
sintering the green body with the tag to form a sintered body having a smaller volume than the green body
Implementation Method 3
the green body shrinks with a length shrinkage which is typically about 15-20%, corresponding to a volume shrinkage of about 40-50%
Data Source
AI summary
A method for manufacturing a sintered body having one or more hard constituents in a metallic binder phase, the method including the steps of forming a green body from a powder composition including at least the one or more hard constituents, the metallic binder phase, and an organic binder system, forming a pattern in a surface of the green body such as to provide a tag enabling individual identification of the green body, and sintering the green body with the tag to form a sintered body having a smaller volume than the green body. The pattern is formed such that the tag is readable after the sintering operation.