Solid Lubricant Application for Hot-Rolling Mill Rods
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Solution Overview
Problem
Existing methods for hot-rolling metallic hollow bodies face challenges in controlling and maintaining lubricant thickness and distribution on rolling rods, leading to inefficiencies and increased cooling times, which affect the rolling process.
Innovation Solution
Applying lubricant in solid form, either directly or through a matrix, allows for precise and controlled application, minimizing evaporation and dripping risks, and enabling targeted layer thickness control using films, sheets, or pressing mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If liquid or powder lubricant is applied to the rolling rod, then the rolling process can be maintained, but the lubricant thickness cannot be controlled precisely and evaporation/dripping occurs
Solution Approach 1:
The patent changes the physical state of the lubricant from liquid/powder to solid form. This parameter change enables precise thickness control through the thickness of the solid lubricant layer, while eliminating evaporation and dripping issues inherent in liquid and powder forms. The solid lubricant is applied as a coating on the rolling rod surface.
Solution Approach 2:
The patent employs a disposable solid lubricant layer that is applied fresh for each rolling cycle. The solid lubricant serves its purpose during the rolling process and is then removed or consumed, eliminating the need for complex control systems to maintain lubricant thickness and composition over time.
2Reliability
If lubricant is applied frequently to maintain thickness, then consistent lubrication is achieved, but cycle time increases due to cooling requirements
Solution Approach 1:
By changing the lubricant to solid form, the patent eliminates the need for frequent reapplication and cooling cycles. The solid lubricant maintains its functional properties without evaporation, allowing longer operation intervals and reduced cycle times while preserving lubrication consistency.
3Loss of substance
If solid lubricant is applied to the rolling rod, then evaporation and dripping are reduced, but application control and layer thickness distribution become challenging
Solution Approach 1:
The patent replaces complex mechanical application systems for liquid/powder lubricants with a simpler solid lubricant coating method. The solid lubricant can be applied as a pre-formed layer or coating, eliminating the need for sophisticated spraying or spreading mechanisms while achieving uniform thickness distribution.
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 ensures reliable and efficient lubrication with reduced evaporation and dripping, allowing for optimized lubricant distribution and reduced cycle times, improving the hot-rolling process by maintaining consistent lubrication and minimizing waste.
Implementation Method 1
Applying lubricant in solid form, either directly or through a matrix, allows for precise and controlled application, minimizing evaporation and dripping risks
Data Source
AI summary
In order to optimize the lubrication of a rolling rod in a process for hot-rolling metallic, elongate hollow bodies (21) by means of the rolling rod (2), which is arranged in the hollow body and to which lubricant is applied before the hot-rolling operation, the lubricant is applied to the rolling rod in solid form.