EUROPEAN STEEL TECHNOLOGY AND APPLICATION DAYS 2017 - ESTAD 2017

What makes automotive steel, really automotive? Is now-a-days automotive steel, the same as future automotive steel? And, can we reduce production costs and still achieve automotive quality? Producing steel strip with the highest material properties and surface aspects are NOT enough; CONTROL is the key aspect Danieli equipment has been developed together with: > Yieh Phui (PR China) –...

Due to the ongoing trend towards fully automated processing lines the development of process controls is highly desirable. In the field of roller leveling a process control has to ensure a constant flatness of the processed strip. A direct measurement of the remaining curvature after leveling is difficult as the strip is suspended to external forces such as gravity or tensile stresses....

Primetals and Tangshan have achieved a great performance in project execution to enable a fast development of Tangshan’s new #2 Cold Rolling Mill Complex dedicated to the most valuable products in cold rolled, annealed and coated coils. The project was not limited to equipment delivery and line start-up but included challenging steps in production while considering the three processes,...

Yield and economy during cold rolling of flat products depend on developing high capacity components fulfilling further increasing customers demands for cost and resource effective production of steel strip material. The paper gives an overview of the latest developments for high capacity components and tools of SMS group for cold rolling tandem mills and cold reversing mills. The SMS...

In hot and cold rolling mills self-exited vibrations are a very common problem. These vibrations lead to chatter marks on rolls and strip, if no countermeasures are applied. Usually rolling speed is reduced significantly in an automated way, each time self-exited vibration comes up. A reduced productivity is always the result. A new actuator is presented in this paper that allows the active...

In cold strip rolling, the amount of wear generated in the contact zone influences the surface quality of the final product, and, by influencing the coefficient of friction between work roll and strip, the force and power requirements of the mill. Most of this wear is expected to be generated from the strip, as the rolls are generally much harder. In order to study the generation of wear...

Safety and environmental considerations have significantly increased the demand for Advanced High Strength Steels for automotive applications. Primetals Technologies has incorporated various advanced technologies in the latest supplied Continuous Pickle Line coupled with Tandem Cold Mills (PL-TCM) to satisfy the increased process demands to produce these harder and thinner steels, achieve the...

The increasing demand of ever higher hardness and thinner steel, for example “advanced high strength steel” in the automotive industry, “tin plate” and “electrical (silicon) steel”, has accelerated in recent years. Particularly in the cold rolling field, harder- and thinner-strip rolling techniques have become urgent requirements which must be dealt with. The HYPER UC-MILL, which was newly...

Rolling of hard and thin strips is still a challenge for steel industry. For such a configuration, the rolling force could drastically increase and might exceed the tandem mill limit. Flexible lubrication has been developed at ArcelorMittal to cope with the aforementioned issue. It enables controlling effectively the friction condition inside the roll-bite through lubrication process with...

Primetals Technologies has made an important Research & Development effort on laser welder field. The last step of its program was the evolution of its laser welder range by implementing the Solid state technology with laser cutting and welding. Since this step, twelve welders have been manufactured by Primetals Technologies. After more than six years of industrial feedback, the results...

In 2014, SMS group received the order to modernize Severstal’s fifty years old four stand tandem mill (TCM) in Cherepovets. Main aims are to increase the capacity and strip quality as well as to prepare the mill for a later coupling to a new pickling line (PL). Additionally reduced off-gauge length, raised availability and increased automation rate are required to improve the yield. In a...

Demands for cold rolled tin-plated or galvanized steel sheet products are increasing rapidly in Turkey supported by its economic expansion. A cold rolling complex project for Tosyali-Toyo Celik Anonim Sirketi has now started in Turkey to meet the demands. Primetals Technologies supplies PL-TCM, Tin-CAL and 2-std. Temper DCR Mill for the complex. This paper will introduce the latest...

As a technology for heavy reduction cold rolling of hard materials such as stainless steel and electrical steel, the Advanced 20Hi Split Housing ZR-Mill (HZ-Mill) has been developed as a 20Hi Cluster mill with a split inner housing, replacing the conventional large-scale mono-block type 20Hi ZRM. In the HZ-Mill, workability can be improved by increasing a roll clearance between the work rolls,...

**First successful flying roll change installation for increased production yield** Pushing the horizon of stainless steel continuous cold rolling mill performance on the edge of perfect strip quality level, not compromising with the highest yield and productivity ratios, has been given a new milestone by Primetals Technologies. After a first reference of X-HI® technology tandem mill on...

Chatter is one of the most crucial phenomenons in strip rolling, especially in the very fast operating process steps like cold rolling. Bringing mills to the maximum of their operational possibilities without entering the “chatter” areas is not only a challenging task for all producers of Aluminum and Steel strip and sheet but must also be supported comprehensively by the plant manufacturers....

The efficiency of a batch annealing bay is to a large extent dependent on which coils are combined to create the stacks. At Tata Steel IJmuiden a smart stack building algorithm is in use to optimize productivity. However, over the past few years the throughput of the batch annealing bay has become more volatile as more steel was shifted to the hot dip galvanizing lines. Especially when...

Ten years back SMS group has launched its X-Shape flatness measurement system for cold rolling mills. The core component of X-Shape is the flatness measuring roll developed by SMS group. Its outer appearance can hardly be distinguished from a conventional deflector roll, but it is the sophisticated technology inside that makes the difference. Main features are - state-of-the-art,...