Induction Heat Treating Apparatus with Adjustable Quenching Sprayers
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Solution Overview
Problem
Continuous induction heat treating processes face challenges in accurately quenching and correcting axial bowing of workpieces due to variations in shape parameters, leading to inconsistencies in the final product quality.
Innovation Solution
A continuous induction heat treating apparatus with a conveyor path, an induction heating station, and a quenching station equipped with adjustable sprayers and sensors to measure shape parameters, allowing for real-time adjustments to the quenching process and heating distribution to correct axial bowing and maintain product specifications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If fixed-position sprayers are used in the quenching station, then the apparatus structure is simple, but the quenching precision cannot be adjusted for workpieces with varying shape parameters
Solution Approach 1:
The sprayers are made adjustable through a quench adjustment mechanism that allows repositioning of the sprayer assembly along the conveyor path. This dynamic adjustment capability enables the point of intersection between sprayers and the workpiece axis to be modified based on measured shape parameters, thereby achieving precise quenching adaptation without requiring complete structural redesign
Solution Approach 2:
The system changes the positional parameters of the sprayers relative to the workpiece by adjusting the sprayer assembly position along the conveyor path. This parameter modification allows the quenching application point to be optimized for different workpiece shapes while maintaining the same physical sprayer components
2Manufacturing precision
If uniform heating is applied to all workpieces, then the heating process is simple, but axial bowing cannot be corrected for workpieces with varying shape parameters
Solution Approach 1:
The heating system applies differentiated thermal treatment to different regions of the workpiece by positioning heating zones according to measured shape parameters. This local quality approach allows specific areas requiring bowing correction to receive targeted heating while other areas receive standard heating, achieving precision correction without uniform complex control
Solution Approach 2:
The system performs preliminary measurement of shape parameters upstream of the heating station, allowing the heating configuration to be pre-adjusted based on predicted bowing requirements. This preliminary action enables proactive correction rather than reactive adjustment
3Productivity
If manual adjustment of quenching parameters is used, then the control system is simple, but productivity decreases due to stopping the conveyor for adjustments
Solution Approach 1:
The system implements a feedback loop where shape parameters are continuously measured by sensors, and the quench adjustment mechanism automatically modifies sprayer positions based on this feedback. This closed-loop control eliminates the need for manual intervention and conveyor stopping, maintaining continuous operation while achieving adaptive precision
Solution Approach 2:
Manual mechanical adjustment of quenching parameters is replaced with an automated actuation system controlled by electronic sensors and a controller. This substitution eliminates the need for physical intervention while maintaining adjustment capability, thereby preserving continuous conveyor operation
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 apparatus ensures precise quenching and heating adjustments, effectively reducing axial bowing and maintaining product specifications, resulting in consistent and high-quality finished workpieces.
Implementation Method 1
an induction heating station positioned along the conveyor path and operable to induce heating in the workpiece
Implementation Method 2
an induction heating coil, and copper laminations positioned relative to the induction heating coil
Implementation Method 3
a quenching station including a plurality of sprayers operable to spray water onto the workpiece to quench the workpiece
Data Source
AI summary
A continuous induction heat treating apparatus is provided including a conveyor path defining an axis for a workpiece to be conveyed through the apparatus. The apparatus includes an induction heating station positioned along the conveyor path and operable to induce heating in the workpiece as the workpiece is conveyed through the induction heating station. A quenching station is positioned in a downstream direction from the induction heating station. The quenching station is coupled to a water supply and includes a plurality of sprayers in fluid communication with the water supply and operable to spray water toward the axis for quenching the workpiece as the workpiece is conveyed through the quenching station. The apparatus further includes a quench adjustment mechanism including an actuator coupled to at least a first one of the plurality of sprayers for re-positioning a point of intersection defined between the first sprayer and the axis.