Axle Workpiece Quenching with Separation Rings
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing oil-immersion quenching methods for axle-type workpieces result in non-uniform as-quenched hardness due to poor cooling uniformity, leading to mechanical property issues and potential service life problems, as the cooling rate is influenced by gas flow patterns and transition from vapor film to boiling mode, which are not effectively addressed by current techniques.
Innovation Solution
The method involves separating the workpiece into sections using machined separation rings to expel gas bubbles, thereby controlling the gas flow and demarcation line spreading, ensuring uniform cooling and improved quenching hardness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If workpieces are quenched in a vertical state without separation rings, then the quenching process is simple, but the as-quenched hardness is non-uniform along the axial direction
Solution Approach 1:
The workpiece surface is segmented into multiple sections by machining circumferential grooves (separation rings) at specific axial positions. These grooves divide the continuous vapor film into discrete segments, allowing independent control of gas bubble expulsion at each section. This segmentation enables uniform cooling across different axial positions while maintaining the simple vertical quenching configuration.
2Manufacturing precision
If stirring is used to improve cooling uniformity, then the as-quenched hardness uniformity improves, but the device complexity and energy consumption increase
Solution Approach 1:
The separation rings on the workpiece surface actively participate in the quenching process by facilitating self-expulsion of gas bubbles from each section. The grooves create pressure differentials and flow paths that automatically remove vapor films without requiring external stirring mechanisms. This self-service approach achieves uniform cooling while avoiding the complexity of stirred quenching systems.
3Productivity
If the workpiece is quenched without separation rings, then the production efficiency is high, but the quenching deformation increases
Solution Approach 1:
The separation rings are pre-machined into the workpiece surface before quenching. These grooves are positioned at critical locations where vapor film accumulation occurs, preparing the surface topology in advance to guide gas bubble expulsion during quenching. This preliminary action ensures uniform cooling and minimal deformation without requiring additional equipment or complex procedures.
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 enhances the uniformity and quality of as-quenched hardness, reduces quenching deformation, conserves alloy resources, lowers production costs, and increases efficiency by achieving faster and more uniform cooling, even with standard quenching oils.
Implementation Method 1
The curve reflects the cooling characteristics of the cooling medium in vapor film stage, boiling cooling stage, and convection cooling stage
Implementation Method 2
The curve reflects the cooling characteristics of the cooling medium in vapor film stage, boiling cooling stage, and convection cooling stage
Implementation Method 3
The curve reflects the cooling characteristics of the cooling medium in vapor film stage, boiling cooling stage, and convection cooling stage
Data Source
AI summary
An oil-immersion quenching cooling precursor and an oil-immersion quenching cooling method includes an axle-type workpiece or a workpiece that has sections in an axle form. Several separation rings are arranged on the workpiece in the axial direction to separate the axle-type workpiece or the workpiece that has sections in an axle form into a plurality of sections before oil-immersion quenching cooling. In the method, there is a cutting procedure before a quenching cooling procedure. Several separation rings distributed in the axial direction are reserved outside a dimension required for the workpiece. sections before oil-immersion quenching cooling. In the method, there is a cutting procedure before a quenching cooling procedure. Several separation rings distributed in the axial direction are reserved outside a dimension required for the workpiece.