Flanged Metal Pipe Structure for Internal Liquid Drainage
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Solution Overview
Problem
Metal pipes formed by existing methods are prone to rust due to the inability to effectively discharge liquids, leading to liquid collection and potential intensity deterioration.
Innovation Solution
A metal pipe forming method that creates a gap between the inner surfaces of the flange portion, which communicates with the internal space of the pipe portion and includes a through-hole connected to the gap, allowing for easy liquid discharge and reducing rust formation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a metal pipe is formed by existing forming methods with a flange portion, then the pipe structure is complete and functional, but liquid accumulates inside the pipe causing rust and potential intensity deterioration
Solution Approach 1:
The flange portion is segmented into multiple layers (first flange layer and second flange layer) with a gap between them, creating separate functional zones that allow liquid to escape while maintaining structural integrity
Solution Approach 2:
The gap structure creates a porous-like pathway through the flange portion, allowing liquid to pass through from the internal space to the external environment, preventing accumulation and rust
2Strength
If the flange portion is formed as a solid sealed structure, then the pipe has good structural strength, but liquid cannot be discharged from the internal space
Solution Approach 1:
The flange is divided into multiple layers with intentional gaps between them, maintaining overall structural strength while creating liquid discharge pathways
Solution Approach 2:
The gap is positioned asymmetrically within the flange structure, strategically located to enable liquid discharge while preserving the symmetric structural integrity of the overall flange assembly
3Object-generated harmful factors
If a gap is created between the inner surfaces of the flange portion, then liquid can be discharged effectively, but the forming process becomes more complex
Solution Approach 1:
The gap formation is merged into the single-step forming process by using a multi-layered die cavity structure, eliminating the need for separate gap creation operations
Solution Approach 2:
The die cavity is pre-designed with the gap structure, so the gap is automatically formed during the initial forming process before the pipe is even completed
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 method effectively prevents liquid collection inside the metal pipe, thereby suppressing rust formation and maintaining pipe integrity.
Implementation Method 1
a heating mechanism that heats the metal pipe material
Implementation Method 2
a gas supply portion that supplies a gas into a metal pipe material held between the upper and lower dies
Data Source
AI summary
A metal pipe forming method includes: disposing a metal pipe material having a hollow shape between a pair of dies; and forming a metal pipe including a pipe portion and a flange portion by expanding the metal pipe material by supplying a fluid and bringing the metal pipe material into contact with the pair of dies. In the forming of the metal pipe, a gap which is positioned between a pair of inner surfaces of the flange portion and communicates with an internal space of the pipe portion is formed, and the flange portion is provided with a through-hole connected to the gap.