Laying Head Pipe and Split Ring Design for Stable Coil Formation
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Solution Overview
Problem
The increased delivery speeds in rod rolling mills lead to higher forces on laying heads and associated components, causing wear and reducing the ability to maintain a stable ring pattern, which affects cooling and end product properties, and results in costly and time-consuming replacements.
Innovation Solution
A coil-forming laying head system with a laying head pipe supported by airfoil-shaped support assemblies and a split ring composed of enclosed and open segments, which reduces noise, power consumption, and wear, allowing for efficient maintenance and faster replacement of components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If delivery speed is increased in rod rolling mills, then productivity is improved, but forces on laying head components increase causing wear and instability
Solution Approach 1:
The laying head components are divided into multiple segments (pathway segments, split ring segments) that can be independently replaced. This segmentation allows maintenance of individual worn components without replacing the entire laying head, thus maintaining reliability at high speeds while enabling quick repairs.
Solution Approach 2:
The laying head components are designed with dynamic capabilities including rotation at high speeds and adjustable positioning. The pathway and split ring are configured to dynamically adapt to high-speed operation forces while maintaining stable ring formation through controlled movement and flexibility.
2Productivity
If delivery speed is increased, then productivity is improved, but wear on pathway and split ring increases requiring replacement
Solution Approach 1:
The pathway is divided into multiple replaceable segments and the split ring is divided into segments that can be independently maintained. This allows only worn segments to be replaced rather than the entire component, extending overall system service life while maintaining high productivity.
Solution Approach 2:
Worn pathway and split ring segments are discarded and replaced with new or reconditioned segments. The modular design enables quick removal of worn segments and installation of fresh segments, minimizing downtime and extending the operational life of the laying head system.
3Reliability
If pathway and split ring are replaced, then reliability is improved, but loss of time and production stops occur
Solution Approach 1:
The pathway and split ring are segmented into modular sections that can be independently accessed and replaced. This segmentation enables maintenance crews to quickly remove and replace only the specific worn segments without disassembling the entire laying head, dramatically reducing maintenance time and production loss.
Solution Approach 2:
Replacement segments can be prepared in advance while the mill operates. The modular design allows pre-positioning of replacement segments, so when wear occurs, the replacement can be performed quickly by simply swapping segments rather than manufacturing or extensively preparing replacement components.
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 system minimizes noise and power consumption, reduces wear on components, and decreases maintenance time, thereby improving the stability of ring formation and reducing mill downtime.
Implementation Method 1
a laying head pipe supported by airfoil-shaped support assemblies
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
A laying head assembly for the formation of coils is disclosed and can include a laying head configured to rotate about an axis, a pathway defining an enclosed conduit configured to contain an elongated material, the pathway extending in a helical path around the laying head, and at least one support structure coupling the pathway to the laying head, wherein at least one of the one or more couplings have an asymmetrical cross-sectional shape.