Mechanics of mixed film lubrication in strip rolling. Rolling speeds of tandem cold rolling mills for thin steel strip are often limited by hot scratches and self excited chatter vibration, which forces the mill to slow down. Consequently the output is reduced and significant out-of-specification materials produced. Operating practices are guided by experience and trial-and-error method. In this project, a comprehensive model will be produced to quantify the effects of relevant parameters that c ....Mechanics of mixed film lubrication in strip rolling. Rolling speeds of tandem cold rolling mills for thin steel strip are often limited by hot scratches and self excited chatter vibration, which forces the mill to slow down. Consequently the output is reduced and significant out-of-specification materials produced. Operating practices are guided by experience and trial-and-error method. In this project, a comprehensive model will be produced to quantify the effects of relevant parameters that can provide a much better understanding of the rolling process at speeds higher than previously possible, and help to improve its productivity as well as product quality.Read moreRead less
Roll bite lubrication in hot strip rolling. Roll bite lubrication has been applied in hot strip rolling with significant cost savings in reduced rolling force, reduced roll wear and increasede productivity. However the mechanics of roll bite lubrication in the interface is not well understood due to the high temperature of the strip, scale oxide on the surfaces and contact asperities. It is known how the surface roughness is generated after rolling. This proposed project will develop a model to ....Roll bite lubrication in hot strip rolling. Roll bite lubrication has been applied in hot strip rolling with significant cost savings in reduced rolling force, reduced roll wear and increasede productivity. However the mechanics of roll bite lubrication in the interface is not well understood due to the high temperature of the strip, scale oxide on the surfaces and contact asperities. It is known how the surface roughness is generated after rolling. This proposed project will develop a model to simulate the roll bite lubrication process, to determine the roughness transfer from the roll surface to the strip surface, and optimise roll bite lubriation process.Read moreRead less
Contact mechanics in hot strip rolling. The mechanics of roll bite contact in hot strip rolling in the interface is not well understood due to the high temperature of the strip, scale oxide on the surfaces, contact asperities and lubrication mechanism of emulsion entrained in the roll bite. It is not known how the strip surface roughness is generated after rolling. This proposed project will develop a model to simulate the contact of the roll bite and to determine the quality of the surface roug ....Contact mechanics in hot strip rolling. The mechanics of roll bite contact in hot strip rolling in the interface is not well understood due to the high temperature of the strip, scale oxide on the surfaces, contact asperities and lubrication mechanism of emulsion entrained in the roll bite. It is not known how the strip surface roughness is generated after rolling. This proposed project will develop a model to simulate the contact of the roll bite and to determine the quality of the surface roughness transfer from the roll surface to the strip surface. The outcome would be significant cost savings in reduced rolling force, increased roll life, minimal surface defects and increased productivity.Read moreRead less
Strip shape performance at tandem cold mill. The shape of the strip at the cold mill are affected significantly by machine conditions and key process variables, and yet the inter-relationship between these key areas are not known and operators rely on trial-and-error methods to operate the mill. At high speeds, the shape of the strip leaving the mill is not good, causeing problems to rolling mills downstream. The project proposed here will integrate practical knowledge and numerical modeling of ....Strip shape performance at tandem cold mill. The shape of the strip at the cold mill are affected significantly by machine conditions and key process variables, and yet the inter-relationship between these key areas are not known and operators rely on trial-and-error methods to operate the mill. At high speeds, the shape of the strip leaving the mill is not good, causeing problems to rolling mills downstream. The project proposed here will integrate practical knowledge and numerical modeling of the strip shape of tandem cold mill at high speeds to optimise the quality of the strip exiting the cold mill, and enable the mill to operate at higher speeds than the current practiceRead moreRead less
Understanding the role of nanoparticles in water based lubrication. This project seeks to understand the role of nanoparticles in the lubrication of hot strip rolling and then to develop novel nano-additive water-based lubricants to solve a long-standing issue for the steel-making industry. Lubrication significantly affects the surface quality of hot-rolled strips, roll wear and energy consumption in the steel-making industry. Currently, oil-based lubricants are used. However, their lubricant ef ....Understanding the role of nanoparticles in water based lubrication. This project seeks to understand the role of nanoparticles in the lubrication of hot strip rolling and then to develop novel nano-additive water-based lubricants to solve a long-standing issue for the steel-making industry. Lubrication significantly affects the surface quality of hot-rolled strips, roll wear and energy consumption in the steel-making industry. Currently, oil-based lubricants are used. However, their lubricant effect is considerably reduced by the use of high pressure cooling water, and the waste discharge is of environmental concern. Successful outcomes for the project are expected to improve product quality and reduce resource use.Read moreRead less
Lubrication mechanics in hot strip rolling. The economic benefits in steel production of lubrication, reduced rolling force and roll wear, energy saving on power consumption, and better strip quality are highly significant. This project will provide new knowledge on the lubrication mechanics to help the Australian metal manufacturing industry to achieve maximum benefits.