Quenching Tool Asymmetric Support for Vapor Film Separation
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Solution Overview
Problem
The generation of a vapor film on the surface of a quenching object during immersion in a liquid coolant hinders heat transfer and can lead to variations in cooling degree, resulting in slight deformation of the object.
Innovation Solution
A quenching tool with a disc-shaped portion and through hole, featuring at least one first support member and one second support member with offset support portions, is used to incline the quenching object during immersion in cooling oil, facilitating quick separation of the vapor film.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the quenching object is immersed in liquid coolant, then cooling is achieved, but vapor film generation hinders heat transfer and causes cooling degree variation
Solution Approach 1:
The quenching object is supported by two support portions positioned asymmetrically (offset in directions of first axis and second axis orthogonal to each other), causing the object to be immersed in an inclined state. This asymmetric support configuration enables the vapor film to separate quickly from the surface during immersion, preventing vapor film accumulation and ensuring consistent heat transfer and cooling degree throughout the quenching process
2Stability of the object's composition
If the quenching object is supported horizontally, then support stability is achieved, but vapor film separation is slow causing cooling variation
Solution Approach 1:
The support portions are positioned asymmetrically with offsets in both the first axis direction and second axis direction, creating an inclined immersion posture. This asymmetric arrangement maintains support stability while simultaneously enabling rapid vapor film separation, thus achieving both stability and cooling uniformity
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
The quenching tool effectively reduces variations in cooling degree by quickly separating the vapor film from the quenching object, thereby suppressing its influence on the quenching result and ensuring stable support of the object.
Implementation Method 1
When a heated quenching object is immersed in a liquid coolant, a so-called vapor film is generated on a surface of the quenching object
Implementation Method 2
a vapor film present on a surface of the quenching object hinders heat transfer from the quenching object to a cooling oil
Data Source
AI summary
A quenching tool is used for quenching a quenching object which includes a disc-shaped race having a race through hole. The quenching tool includes a support mesh having a first support portion configured to be in contact with the quenching object, and support wires which are a plurality of second support members each having a second support portion configured to be in contact with the quenching object. A position of the second support portion is offset in a normal direction with respect to the first support portion. Further, the position of the second support portion is also offset in a direction of an axis contained in an in-plane direction orthogonal to the normal with respect to the first support portion.