Steel dates back to the Spartans of Ancient Greece, and it has become the framework on which the world is built. It is used in almost every aspect of day to day life—from cars to construction and from cargo ships to surgical scalpels.
This ubiquity has not stopped it from suffering from the worst downturn in 50 years, driven by unbalanced supply and demand. Last year, China—the world’s largest producer and consumer of steel—announced over half a million redundancies as part of a program to manage overcapacity within the steelmaking industry.
While China’s announcements were a welcome relief to an embattled industry, steelmakers still find themselves in a challenging environment—they need to grow revenues and margin when the demand is low. Thus, they need to find a way to deliver against the forecast demand while ensuring that they maximize revenue opportunities and maintain margins.
Steel processing is a hard, challenging environment for any equipment, and breakdowns and machinery running out of tolerance are a daily occurrence. Avoiding unplanned downtime is a critical driver of productivity, customer experience and profitability, but maintaining equipment to ensure peak performance drives costs upwards. As important as avoiding unplanned downtime is maintaining production quality and controlling energy consumption. There’s also an issue of inconsistent performances across plants, resulting from patchwork supply chains, and an overall lack of standardization through the production process.
If the industry is to survive the downturn and deliver the required high-quality steel, it needs to be able to meet and overcome these obstacles.
Digital solutions for one of the world’s original innovations
Steel goes back thousands of years, but to overcome its challenges, the steelmaking industry needs to look to a much newer innovation—digital.
Every single motion in production can generate powerful data, and that’s no different for the rotating machines deployed in a steel mill. The production of steel requires significant numbers of rotating machines—a single processing line can have hundreds of motors running conveyor belts and driving rolling mills, all of which have an impact on product quality, productivity and ultimately, profits. Therefore, ensuring they stay online, working optimally, is crucial.
A digital solution, such as GE’s Asset Performance Management (APM), could be deployed to monitor rotating machinery performance in the downstream steelmaking process and draw insights from big data for performance improvement.
What does that mean for the challenges the industry currently faces?
Solving the billion-dollar problems
When one considers that a single hot strip mill can lose up to $30 million in annual revenue to unplanned downtime—and the hot strip mill is only part of the finished steel processes—across the industry, this adds up to billions of dollars.
The deployment of digital tools that can monitor and determine equipment health instead of expensive and often fragile vibration monitors and other techniques means that, for the first time, it is possible to monitor every single item of equipment in the process and not just those deemed “critical.” The application of this new approach will have a profound impact on downtime, product quality and energy consumption, with spin-off benefits for maintenance costs, manning levels and spare parts inventories.
- Reduce downtime: The shift from a calendar-based approach—where it is not truly known which equipment is going to fail—to a predictive maintenance approach is as revolutionary as the Bessemer process was in its day. It allows operators to maintain, based on a real assessment of the machine health, only the equipment that needs it, tracking parts through their life cycle and scheduling repair or replacement on an as-required basis, cutting significant excessive costs and downtime.
- Enhance steel quality: The quality of steel a mill produces directly affects reputation and revenue. Rotating machinery needs to be performing in high precision to deliver the required quality as well as to generate less wastage. Enabled by this digital capability, operators can access the real-time status and performance of equipment and make immediate adjustments as required—fine-tuning processes while machines are in motion—optimizing machinery to deliver precise and effective performance.
- Save energy consumption: Steelmaking is also an energy-intensive industry, costing up to 40 percent of production in some geographies, with motor systems responsible for 7 percent of energy use. When equipment fails to perform correctly, it consumes more energy. That same approach to monitoring, analyzing and acting on data from machinery comes into play here, ensuring motors are working at peak efficiency. Reduced energy consumption means a reduced energy bill and environmental impact.
Business Intelligence: the next chapter
The growing trend of merger and acquisition activities within the industry has caused a dilution of skills and experience in qualified labors. Lack of standard practices has further resulted in fragmented and uneven performances across steel plants. Different data acquisition mechanisms, alarms, triggers and fault descriptions have also posed a challenge for global companies to obtain data insights across facilities, which in turn limits their ability to achieve cost and process improvement at a global level.
Using digital APM technology that sits on a cloud-based platform, like Predix, all data can be analyzed, giving a complete view of the entire process—even when split across several plants. This central and holistic view could be applied not just to supply chains, but to plant performance across the world.
A connected approach enables one single data repository to retain knowledge, process information and deliver accurate analytics. Breaking down plant silos, operators can assess the real-time performance of any plant anywhere for global benchmarking and smarter decision-making, driven by data (rather than local experience alone). Best practices can therefore be identified, modelled and then scaled globally for consistent, efficient performance across a business, irrespective of location.
The industry is being challenged, but the demand for steel is not going to fade away. What that means is that operators need to get themselves into a position where they can maximize opportunities. At a time when operators need to do more with less, digital solutions are pushing the boundaries of what they can achieve, helping solve billion-dollar problems to unlock future profits and growth.
Renovating old technology and ensuring that equipment is among the most efficient it can be is high on the agenda for GE Energy Connections’ Power Conversion (NYSE: GE). POSCO-Thainox’s skin-pass mills are the latest to benefit from GE’s renovation service.
- GE has Just Completed Renovation of POSCO-Thainox’s Skin-Pass Mill
- GE Provided Critical Technology, Including the Low-Voltage, Large Power Range LV7000 Drive
- Project Completed in an Impressive 10 Days
This upgrade was completed within an impressive 10 days; GE engineers ensured that the mill reached nominal production well within schedule.
“We have an enduring relationship with GE and are highly satisfied with the service they provide. They completed the project efficiently, and just 10 days after we closed the mill, the first coil was rolled. We look forward to working with GE again in the future,” said a spokesperson from POSCO-Thainox.
POSCO-Thainox’s skin-pass mill was in need of renovation after being originally equipped by GE in 1993. The revamping of the mill will allow it to increase operational capacity and facilitate maintenance, which in turn will increase efficiency over its lifetime. The upgrade called for sophisticated automation and control systems to improve the quality of cold-rolled products as well as increasing the mill’s productivity, availability and reliability.
Power Conversion supplied advanced solutions to help boost the overall performance of the mill, which included low-voltage AC LV7000 drives, a power electronic controller system (PECe) for large DC drives and a high-performance controller for automation systems.
The PECe controllers employ the same hardware and software as used for the automation system, ensuring standardization across the whole process. This advanced solution is beneficial to customers in regards to training and ease of use. The controllers are linked to a human-machine interface standard software and an advanced computer communication network, allowing the customer to be autonomous while managing the evolution of the application.
“This project was successful thanks to GE’s global reach and advanced technologies. We are committed to providing the latest and best value solutions to our valued customers,” said Giacomo Del Panta, global service leader, Power Conversion.
GE (NYSE: GE) is the world’s Digital Industrial Company, transforming industry with software-defined machines and solutions that are connected, responsive and predictive. GE is organized around a global exchange of knowledge, the "GE Store," through which each business shares and accesses the same technology, markets, structure and intellect. Each invention further fuels innovation and application across our industrial sectors. With people, services, technology and scale, GE delivers better outcomes for customers by speaking the language of industry. To learn more, please visit www.ge.com
About GE Energy Connections
GE Energy Connections designs and deploys industry-leading technologies that turn the world on. We transport, convert, automate and optimize energy to ensure we provide safe, efficient and reliable electrical power. Uniting all the resources and scale of the world’s first digital industrial company, we connect brilliant machines, grids, and systems to power utility, oil & gas, marine, mining and renewables customers, that keep our world running. For more information, please visit www.geenergyconnections.com.
About GE’s Power Conversion
Power Conversion, a business unit of GE Energy Connections, applies the science and systems of power conversion to help drive the electrification of the world’s energy infrastructure by designing and delivering advanced motor, drive and control technologies that evolve today’s industrial processes for a cleaner, more productive future. Serving specialized sectors such as energy, marine, oil and gas, renewables and industry, through customized solutions and advanced technologies, Power Conversion partners with customers to maximize efficiency. For more information, please visit www.gepowerconversion.com.