How to control the quenching deformation of the guide rail in the medium frequency electric furnace equipment
June 22 03:04:14, 2025
When a bed rail undergoes quenching and becomes deformed, it often results in the complete removal of the hardened layers at both ends. This leads to rails that cannot be straightened, causing significant waste, including the thinning of hardware components, soft spots, and reduced wear resistance. To address the issue of quenching-induced deformation, improvements need to be made both structurally and procedurally. Below are three key strategies:
1. **Vibration Aging to Eliminate Internal Stress**
Between the surface hardening process and subsequent grinding, the bed rail undergoes vibration aging. During this stage, an exciter is mounted onto the bed rail, generating forces that cause resonance. As the bed rail vibrates, it absorbs energy, allowing internal stresses to be released. This process enhances the dimensional stability of the rail, reducing the likelihood of deformation over time.
2. **Adopting a Deformation Compensation Process**
Surface deformation of the guide rail typically results in a concave shape. When machining, the two ends of the rail are supported while the center is subjected to downward pressure, causing the rail to bend further. Once the pressure is relieved post-processing, the rail rebounds slightly. However, this approach requires significant manual effort from workers and does not consistently produce uniform convexity across the rail's length.
3. **Enhancing Local Joint Stiffness Between the Bed and Guide Rail**
Increasing the joint rigidity between the bed and the guide rail helps minimize deformation. While this approach improves structural integrity, it also adds weight to the machinery and limits the ability to significantly increase cross-sectional dimensions. A more effective solution involves clamping the bed during quenching to enhance its resistance to deformation. By securing the bed to a base with high bending strength, the likelihood of warping is minimized.
After analyzing these approaches, it is evident that improving the localized joint stiffness of the bed rail is crucial. Additionally, clamping the rail during the quenching process provides enhanced resistance to deformation. These methods ensure better dimensional stability and reduce waste during production.
In conclusion, addressing quenching-induced deformation requires a combination of strategic adjustments to both the manufacturing process and the design of the bed rail itself. Implementing vibration aging, adopting deformation compensation techniques, and enhancing joint stiffness are all critical steps toward achieving optimal performance and minimizing waste in machining operations.
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