Adjustable Scraper Reduces Rolling Oil Load on Strip
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Solution Overview
Problem
Existing methods for reducing the rolling oil load on rolled strips in rolling mills are inefficient, particularly due to the complexity and limited effectiveness of partitioning elements, which require precise positioning and compressed air supply.
Innovation Solution
A simpler scraper system with an adjustable conveying gap between the scraper edge and the barrel surface, allowing the rolling oil film to be conveyed past the scraper edge and removed by centrifugal force, counteracting the downward flow of oil and reducing the oil load on the strip.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a partitioning element with compressed air supply is used to prevent rolling oil from reaching the strip, then the rolling oil load on the strip is reduced, but the device complexity increases
Solution Approach 1:
The invention extracts and eliminates the complex compressed air supply system from the partitioning element, retaining only the essential scraping function. The scraper directly contacts the work roll surface to remove rolling oil, achieving the same harmful factor reduction without the additional pneumatic system complexity.
Solution Approach 2:
The scraper is designed as a simple, replaceable component that can be easily manufactured and adjusted. Instead of a complex, expensive partitioning element with air supply infrastructure, a straightforward scraper mechanism is used that can be quickly replaced or adjusted if worn, reducing both initial complexity and maintenance burden.
2Object-affected harmful factors
If a partitioning element is positioned at a defined distance from the work roll surface to form a flow channel, then the rolling oil load is reduced, but the ease of operation decreases due to precise positioning requirements
Solution Approach 1:
The scraper is equipped with an adjustment mechanism that allows dynamic positioning relative to the work roll surface. This enables operators to easily adjust the gap width d according to specific rolling conditions, making the system adaptable and easy to operate while maintaining effective rolling oil removal.
Solution Approach 2:
The invention introduces adjustable parameters (gap width d, position relative to strip) that can be modified to optimize performance for different rolling conditions. This parameter adjustability simplifies operation by allowing quick adaptation without complex repositioning, while still achieving effective rolling oil load reduction.
3Device complexity
If a scraper rests directly on the work roll surface, then the device complexity is reduced, but the rolling oil load on the strip increases due to direct contact
Solution Approach 1:
The scraper is designed with a localized scraping edge that contacts only a specific portion of the work roll surface. This localized contact allows the scraper to effectively remove rolling oil from critical areas without requiring direct contact across the entire surface, maintaining structural simplicity while reducing rolling oil load on the strip.
Solution Approach 2:
The scraper acts as an intermediary element between the work roll and the strip. By positioning the scraper at a controlled distance d from the work roll surface, it intercepts and removes rolling oil before it can reach the strip, functioning as a mediating barrier that protects the strip without requiring direct contact with the work roll.
4Productivity
If the gap width d of the conveying gap is increased to allow rolling oil film to pass, then the productivity is improved by better oil removal, but the manufacturing precision decreases due to variable parameters
Solution Approach 1:
The adjustment mechanism for the gap width d provides controllable, repeatable positioning that ensures consistent scraping performance. This controlled adjustability allows operators to set and maintain precise gap widths, ensuring both effective rolling oil removal and consistent manufacturing precision across different operating conditions.
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 adjustable scraper system effectively reduces the rolling oil load on the strip by utilizing centrifugal force to redirect and remove the oil film, providing a natural blocking effect that minimizes oil transfer to the strip, adaptable to various process parameters.
Implementation Method 1
removed by centrifugal force, counteracting the downward flow of oil
Data Source
Figure 1
Figure 2
AI summary
Method for reducing the rolling oil load of a rolled strip (16) conveyed through a roll gap (10) of a rolling mill (13), in which a scraper (18) arranged on a strip exit side (17) of the rolling mill (13), provided with a scraper edge (19) for contact against a ball surface (20) of an upper work roll (11) limiting the roll gap (10), is changed in its relative arrangement to the ball surface (20) to form a conveying gap (38) with a gap width d for rolling oil adhering to the ball surface (20) depending on a parameter influencing the rolling process or the rolling result.