Magnetic Detachable Plug for Mannesmann Hot Pipe Making
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Solution Overview
Problem
Existing plug designs for hot pipe making in the Mannesmann process face challenges with wear, seizure, and erosion, making it difficult to maintain and replace only the tip or main body separately, leading to inefficient plug lifespan and increased maintenance complexity.
Innovation Solution
A plug design featuring detachable plug pieces connected by a magnetic force, allowing for easy attachment and detachment, with a column-shaped portion and joining hole configuration that enables free rotation and rigid connection, reducing damage from external forces and heat exposure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of repair
If the tip portion of the plug is fixed to the plug main body by shrinkage fitting or bonding, then the plug structure is integrated and strong, but it becomes difficult to exchange only the tip portion or plug main body separately when erosion occurs
Solution Approach 1:
The plug is divided into a tip portion and a plug main body as separate components that can be independently exchanged. The tip portion and plug main body are connected through a detachable connection structure rather than being permanently bonded, allowing selective replacement of eroded parts while maintaining structural integrity during operation.
Solution Approach 2:
The permanent mechanical connection methods (shrinkage fitting, bonding) are replaced with a magnetic connection system. A magnet is embedded in the plug main body to hold the tip portion during operation, providing strong holding force that can be easily released by external force for maintenance, thus enabling easy partial exchange while maintaining operational strength.
2Ease of operation
If the plug pieces are connected by a magnetic force, then easy attachment and detachment is achieved, but the connection strength may be insufficient under high contact pressure and temperature
Solution Approach 1:
A magnet serves as an intermediary connection element between the tip portion and plug main body. The magnet provides sufficient holding force during high-temperature and high-pressure operations through magnetic attraction, while allowing easy detachment when external force is applied during maintenance, thus resolving the contradiction between operational strength and ease of exchange.
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
Facilitates easy partial exchange and maintenance of the plug, extending its lifespan by allowing for efficient replacement of worn components without compromising the joint structure's integrity during high-temperature and high-force operations.
Implementation Method 1
a connection member which connects the plug pieces by a magnetic force, in which the connection member is a permanent magnet
Data Source
AI summary
A plug for hot pipe making includes a plurality of plug pieces which is attachable to and detachable from one another, and a connection member which connects the plug pieces by a magnetic force. One of the plug pieces connected to each other includes a column-shaped portion which extends in an axis direction of the plug for hot pipe making, and the other includes a joining hole which extends in the axis direction of the plug for hot pipe making and into which the column-shaped portion is inserted. The connection member is a permanent magnet which is attached to at least one of the column-shaped portion and the joining hole.