Biodegradable Cold-Rolling Oil With Controlled Evaporation
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Solution Overview
Problem
The aluminum and aluminum alloys cold-rolling industry requires a biodegradable, non-fossil based neat oil with improved properties such as low aromatic content, high biocarbon content, and controlled evaporation to enhance rolling efficiency and safety while ensuring compliance with food industry standards.
Innovation Solution
A biodegradable fluid with a boiling point range of 200° C. to 400° C., comprising more than 95% isoparaffins and less than 3% naphthenes, obtained through catalytic hydrogenation of hydrodeoxygenated isomerized hydrocarbon biomass feedstock, is used as a neat oil for cold rolling, offering a narrow boiling range and high thermal conductivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional petroleum base oils are used for cold rolling, then rolling efficiency and metal quality are improved, but biodegradability is poor and environmental impact increases
Solution Approach 1:
The patent changes the chemical composition parameters of the rolling fluid by using biodegradable hydrocarbon fluids with specific properties (narrow boiling range, low aromatic content) instead of conventional petroleum base oils, thereby improving biodegradability while maintaining rolling efficiency
Solution Approach 2:
The patent employs biodegradable fluids that can be easily disposed of and degraded in the environment, replacing persistent petroleum-based oils with environmentally friendly alternatives that break down naturally after use
2Temperature
If rolling fluids with high evaporation rate are used, then cooling efficiency is improved, but complete evaporation control is difficult and safety issues arise
Solution Approach 1:
The patent modifies the boiling range parameter of the rolling fluid to be narrow (below 80°C), which provides controlled evaporation characteristics - sufficient for cooling during rolling but preventing uncontrolled evaporation and associated safety issues
Solution Approach 2:
The patent implements monitoring and control systems that track the evaporation behavior of the rolling fluid, using feedback to maintain optimal evaporation rates for cooling while preventing excessive evaporation that would compromise safety
3Strength
If aromatic content in rolling fluids is increased, then film strength is improved, but food industry compliance is compromised
Solution Approach 1:
The patent changes the chemical composition by strictly limiting aromatic content to less than 3% by weight, achieving food industry compliance while maintaining adequate film strength through alternative fluid properties and additives
Solution Approach 2:
The patent uses biodegradable hydrocarbon fluids with inherently low aromatic content, providing a naturally safer alternative to conventional oils that require extensive additive packages to achieve food-grade compliance
4Productivity
If rolling speeds are increased to maximize productivity, then production output is improved, but surface finish quality deteriorates
Solution Approach 1:
The patent modifies the viscosity and thermal conductivity parameters of the rolling fluid to optimize lubrication and heat dissipation at high rolling speeds, maintaining surface finish quality even when production output is increased
Solution Approach 2:
The patent employs rolling fluids with dynamic properties that adapt to varying rolling conditions, allowing the system to maintain optimal performance across different operating speeds without compromising surface finish
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 fluid provides improved rolling efficiency, stability, and safety with complete evaporation control, superior thermal conductivity, and compliance with food industry standards, enhancing productivity and surface finish while minimizing environmental impact.
Implementation Method 1
High thermal conductivity and heat transfer rate are two important features for the products used in rolling
Implementation Method 2
it is preferable that oils be subject to minimal evaporation during use and offer a fast separation at the end of the process, and exhibit a controlled evaporation rate with a complete recovery
Data Source
AI summary
The invention is the use, as oil for aluminium and aluminium alloys cold rolling, of a fluid having a boiling point in the range of from 200° C. to 400° C. and a boiling range below 80° C., said fluid comprising more than 95% by weight isoparaffins and less than 3% by weight of naphthens, a biocarbon content of at least 95% by weight, containing less than 100 ppm by weight aromatics.