Metal-Plated Steel Pipe Line With Adjustable Molten Metal Dipping
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Solution Overview
Problem
In continuous steel pipe manufacturing lines, adjusting the molten metal dipping time is challenging, affecting manufacturing efficiency and leading to issues like unplated portions and cracking/peeling of the plating when line speed changes or stops occur.
Innovation Solution
A system with adjustable molten metal pouring and wiping positions, and multiple dipping troughs, allows for constant dipping time and flexible line speed without stopping, using movable parts and adjustable dipping lengths to maintain consistent plating thickness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If the line speed is changed to adjust dipping time, then the dipping time can be adjusted, but the manufacturing efficiency is affected
Solution Approach 1:
The patent applies the dynamics principle by making the dipping trough movable along the production line. The trough can be positioned at different locations to adjust the dipping time without changing the line speed. This dynamic positioning allows the system to adapt dipping time to product specifications while maintaining constant manufacturing efficiency, resolving the contradiction between adjustable dipping time and productivity.
2Manufacturing precision
If the line speed is decreased to maintain constant dipping time, then the plating quality is maintained, but the manufacturing efficiency is reduced
Solution Approach 1:
The movable dipping trough allows the system to maintain constant line speed while adjusting dipping time by changing the trough's position. This ensures consistent plating quality through controlled dipping time without reducing manufacturing efficiency, as the line speed remains constant throughout production.
3Duration of action of moving object
If the line is stopped to adjust dipping time, then the dipping time can be adjusted, but unplated portions are generated
Solution Approach 1:
The patent uses a movable dipping trough that can be repositioned along the continuous production line without stopping the line. This dynamic adjustment allows dipping time to be changed by altering the trough's position relative to the moving steel sheet, ensuring continuous plating operation and preventing unplated portions while achieving the required dipping time for different specifications.
4Adaptability or versatility
If multiple specifications are manufactured in sequence, then product versatility is achieved, but dipping time adjustment becomes complex
Solution Approach 1:
The movable dipping trough provides a simple and flexible solution for manufacturing multiple specifications. By dynamically repositioning the trough to different locations along the production line, the system can easily adjust dipping time for various product requirements without complex mechanism changes or line speed adjustments, thereby achieving high adaptability with minimal operational complexity.
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
Enables easy adjustment of dipping time to meet specifications, maintains consistent plating without stopping the line, and simplifies the process by allowing different metals to be used on inner and outer faces.
Implementation Method 1
an inner-face plating performing part that performs molten metal-plating by pouring molten metal to the upper side of the steel sheet
Implementation Method 2
a steel pipe forming part for obtaining a continuous steel pipe by continuously cold-forming the steel sheet subjected to the inner-face plating into a tubular shape
Implementation Method 3
seam-welding a longitudinal end face joint portion of the steel sheet formed in the steel pipe
Data Source
Figure 1
Figure 2(a)~3(b)
Figure 4~5(b)
AI summary
To provide a system and a method capable of easily adjusting a dipping time in a continuous steel pipe manufacturing line. Provided is a steel pipe manufacturing system that manufactures a steel pipe of which inner and outer faces or any one face thereof is subjected to molten metal-plating from a steel sheet in a continuous manufacturing line, the system including: an inner-face plating performing part that performs molten metal-plating by pouring molten metal to the upper side of the steel sheet corresponding to the inner face of the steel pipe; a steel pipe forming part that obtains a continuous steel pipe by continuously cold-forming the steel sheet subjected to the inner-face plating into a tubular shape and seam-welding a longitudinal end face joint portion of the steel sheet formed in the steel pipe; and an outer-face plating performing part that performs molten metal-plating by dipping the outer face of the steel pipe into the molten metal, in which a dipping length of the molten metal is adjusted in the inner-face plating performing part and/or the outer-face plating performing part.