Lubricant-Storing Sheet Metal Coating for Low-Friction Forming
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for producing sheet metal products require excessive lubricant use, leading to increased production costs and environmental impact, while also necessitating continuous reapplication to prevent tool and product wear due to high frictional forces during mechanical forming.
Innovation Solution
A method involving coating the sheet metal preliminary product with depressions that can absorb and transport lubricant to critical regions during forming, with the coating being elastically deformable under lower loads and plastically deformable under higher loads to release lubricant as needed, thereby reducing lubricant usage and ensuring continuous lubrication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If additional lubrication is used to reduce frictional forces during forming, then the flow of sheet metal is improved and forming results are optimized, but production costs increase and environmental impact worsens due to complex application and cleaning outlay
Solution Approach 1:
The patent applies local quality by creating depressions at specific locations on the sheet metal surface where lubricant is needed. These depressions are strategically positioned in areas experiencing high frictional forces during forming, allowing lubricant to be delivered precisely where required rather than applying it uniformly across the entire surface. This localized approach reduces overall lubricant consumption while maintaining effective lubrication at critical points.
Solution Approach 2:
The patent implements preliminary action by pre-coating the sheet metal surface with lubricant before the forming process begins. The lubricant is applied in advance and stored in the depressions, ready for immediate use when the forming process starts. This eliminates the need for continuous reapplication during forming, as the pre-positioned lubricant is released progressively as the depressions deform under load.
2Strength
If lubricant is continuously reapplied to prevent tool and product wear, then wear protection is maintained, but production complexity and cost increase
Solution Approach 1:
The patent applies self-service by designing a system where the sheet metal surface itself serves as the lubricant delivery mechanism. The depressions on the surface automatically release lubricant in response to the forming process conditions - as the depressions deform under load, they progressively release the stored lubricant onto the tool surface. This eliminates the need for external lubrication systems, continuous monitoring, and manual reapplication, while maintaining effective wear protection throughout the forming process.
3Productivity
If high loads are applied during mechanical forming to achieve desired geometry, then forming efficiency is improved, but frictional forces increase requiring more lubricant
Solution Approach 1:
The patent applies dynamics by creating a lubricant delivery system that automatically adapts to the varying load conditions during forming. The depressions on the sheet metal surface deform progressively as loads increase during the forming process, and this deformation directly controls the rate at which lubricant is released. Under high loads, the depressions deform more and release lubricant faster, precisely matching the increased lubrication demand. This dynamic response eliminates the need to pre-determine lubricant quantities based on worst-case scenarios.
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 method effectively reduces lubricant consumption by targeted delivery to high-load areas, minimizing waste and maintaining process stability, thus addressing the environmental and cost concerns of traditional methods.
Implementation Method 1
depressions are rolled into the surface during the rolling operation, wherein after the coating and rolling operations lubricant is introduced into the depressions
Implementation Method 2
the coating is elastically deformable under loads of 0.5 MPa to 20 MPa
Implementation Method 3
plastically deformable under loads of above 20 MPa
Implementation Method 4
lubricant is introduced into the depressions, wherein after the introduction of lubricant the sheet metal preliminary product is mechanically formed by a forming tool
Data Source
AI summary
A method for producing a sheet metal product (1) from a sheet metal preliminary product (2) is proposed, wherein at least one surface (7) of the sheet metal preliminary product (2) is coated with a coating, wherein the sheet metal preliminary product (2) is rolled, wherein depressions (6) are rolled into the surface (7) during the rolling operation, wherein after the coating and rolling operations lubricant (8.1) is introduced into the depressions (6), wherein after the introduction of lubricant (8.1) the sheet metal preliminary product (2) is mechanically formed by a forming tool (5), characterized in that the surface (7) is coated in such a way that, in the forming tool (5) during the forming process, in particular under relative movement between sheet metal surface and tool surface, the coating is elastically deformable under loads of 0.5 MPa to 20 MPa and plastically deformable under loads of above 20 MPa.