Stabilizer Bend Heating Using Proximity Effect for Uniform Grain Size
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Solution Overview
Problem
Existing stabilizer manufacturing methods using electric heating result in temperature deviations and property inconsistencies in the curved portions due to uneven current distribution, leading to variations in grain size and reduced yield strength.
Innovation Solution
A manufacturing method involving alternating current heating with conductors positioned to face the outer circumferential surface of the curved portions, utilizing the proximity effect to control current density and temperature distribution, and optionally using a ferromagnetic body to further refine heating uniformity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If electric heating is used to heat the stabilizer, then heating efficiency is improved, but temperature deviations occur in the curved portion leading to property inconsistencies
Solution Approach 1:
The patent applies different heating approaches to different regions of the stabilizer. Conductors are strategically positioned to face the outer circumferential surface of curved portions, creating localized electromagnetic induction heating zones. This ensures uniform temperature distribution in critical curved areas while maintaining overall heating efficiency, resolving the contradiction between efficient heating and temperature uniformity.
Solution Approach 2:
The patent introduces conductors as intermediary elements between the power source and the stabilizer workpiece. These conductors serve as mediators that generate electromagnetic fields to induce uniform current distribution throughout the stabilizer, particularly in curved portions. This intermediary approach enables efficient heating while eliminating temperature deviations, thus resolving the technical contradiction.
2Temperature
If electric currents flow through the stabilizer for heating, then heating is achieved, but current concentration in the inner portion of curved portions causes temperature deviations
Solution Approach 1:
The patent transitions from direct contact heating to electromagnetic induction heating by introducing conductors in proximity to the workpiece. This dimensional change in the heating mechanism allows current to be induced throughout the stabilizer cross-section more uniformly, preventing current concentration in the inner portion of curved areas and achieving uniform temperature distribution while maintaining heating capability.
Solution Approach 2:
The patent changes the heating parameter from direct electric current passage to electromagnetic induction. By using alternating current in conductors to generate changing magnetic fields, the heating mechanism transforms to produce more uniform current distribution and temperature profiles throughout the stabilizer, eliminating the temperature deviations caused by direct current concentration.
3Shape
If bend processing is performed on the workpiece, then the stabilizer shape is formed, but temperature deviations in curved portions result in property deviations
Solution Approach 1:
The patent performs heat treatment after bend processing to correct property deviations. By applying electromagnetic induction heating with strategically positioned conductors after the stabilizer takes its curved shape, the process compensates for property deviations caused by bending, ensuring uniform mechanical properties throughout the final product while maintaining the required geometry.
Solution Approach 2:
The patent converts the harmful effect of temperature deviations during bend processing into a beneficial correction process. By applying controlled electromagnetic induction heating after bending, the process utilizes heat treatment to uniformize properties in curved portions, transforming the initial property deviations caused by shaping into an opportunity for property enhancement and 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
This method achieves uniform heating temperatures and grain sizes across the stabilizer, enhancing yield strength and reducing decarburization, resulting in improved stabilizer properties and efficiency.
Implementation Method 1
providing a conductor, which is electrically floating, to face an outer circumferential surface of a bend in the curved portion... heating the workpiece by applying the alternating current to the workpiece via the pair of terminals
Implementation Method 2
heating the workpiece by applying the alternating current to the workpiece via the pair of terminals
Implementation Method 3
providing a ferromagnetic body to face an inner circumferential surface of a bend in the curved portion
Data Source
AI summary
According to an embodiment, a manufacturing method of a stabilizer includes performing a bend processing on a workpiece having a bar shape to form a curved portion in the workpiece, providing a conductor, which is electrically floating, to face an outer circumferential surface of a bend in the curved portion, attaching a pair of terminals connected to a power source, which is capable of supplying an alternating current, to the workpiece, and heating the workpiece by applying the alternating current to the workpiece via the pair of terminals.