Fixing Device for Heat Treatment Dimensional Stability
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Solution Overview
Problem
Components produced through primary shaping methods often lack dimensional stability during heat treatment, leading to geometric deformation and deviations from predetermined dimensions, especially when narrow tolerances are required.
Innovation Solution
A method involving the use of a fixing device to retain the blank's dimensions during heat treatment, which can include gripping or supporting devices that create rigid load paths to counter internal stresses and external forces, ensuring the component maintains its defined dimensions through processes like hot isostatic pressing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If heat treatment is carried out to change material properties, then material properties are improved, but dimensional stability deteriorates causing geometric deformation
Solution Approach 1:
The patent applies preliminary anti-action by pre-loading the blank with counteracting forces before heat treatment. The fixing device applies compensating forces that oppose the deformation forces that will arise during heat treatment, thereby preventing geometric deformation while allowing material property changes to occur.
Solution Approach 2:
The fixing device is established and configured before the heat treatment process begins. This preliminary action ensures that the blank is properly constrained and pre-loaded with counteracting forces prior to experiencing the thermal stresses that would cause deformation, thereby maintaining dimensional stability throughout the material transformation process.
2Manufacturing precision
If fixing device is used to maintain dimensions, then manufacturing precision is improved, but device complexity increases
Solution Approach 1:
The fixing device is segmented into multiple independent fixing elements that can be individually positioned and adjusted. Each fixing element can be independently configured to apply forces at specific locations on the blank, allowing precise dimensional control without requiring a monolithic complex structure. This modular approach maintains manufacturing precision while managing device complexity.
Solution Approach 2:
The fixing device applies localized forces at specific positions on the blank rather than uniform constraints throughout. By concentrating fixing forces only at critical locations where deformation would occur, the device achieves high dimensional accuracy without requiring complex structures throughout the entire fixing system, thereby reducing overall device complexity.
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 ensures that the final component retains its predetermined dimensions by counteracting deformations caused by internal stresses and external forces, thereby improving dimensional accuracy and stability during heat treatment.
Implementation Method 1
carrying out a heat treatment step by heating the fixed blank to a predetermined temperature at which a change in the blank occurs
Implementation Method 2
deviations in the dimensions of the blank from the defined dimensions of the component being eliminated as a result of deform forces from the fixing device acting on the fixed blank
Data Source
AI summary
A method for producing a component having defined dimensions from a blank having the same defined dimensions or having dimensions which differ from the defined dimensions of the component, by carrying out a heat treatment. Furthermore, a device for carrying out this method is disclosed.