Sendzimir’s engineers have delivered technical papers from New York to Tokyo. The company’s achievements have been celebrated in print all over the world. This area of our website offers you a library of materials as well as links to other sites that offer information on Sendzimir products and services.
To find papers of interest to you, browse through the annotated list of titles below. Full versions of most of the papers are available for download and viewing using Adobe Reader (click on the Adobe logo to the left to download the free software).
At the beginning of 1985, the steel and non-ferrous industries found themselves in a bind -- they were faced with low consumption, shrinking markets, higher costs, increased quality demands, and lower prices. This was not an enviable position, particularly as it followed three decades of relatively good prosperity.
The concept of using a live reduction mill in a stainless annealing and pickling line was developed over 15 years ago. The objective was to take a live pass on an annealed and pickled material to develop the surface in order to see if such coil of strip could be directly cold rolled or would have to be processed through a surface grinding line. Additional advantages were to correct the gauge and to achieve a certain amount of reduction. 4-High mills and Sendzimir ZS type mills were used for that purpose with reductions averaging around 7-8%. However, shape control was difficult and the material was work hardened during such operation with larger diameter work rolls.
A new continuous annealing, pickling, and rolling line just 380 m long that reduces production time from 3 weeks to 20 minutes has been commissioned at Isbergues. The LC2i (Ligne Continue Intégrée Inox) continuous pickling and rolling line for stainless steel was commissioned at Usinor's Ugine Isbergues works in the north of France in October 1998.
A flexible backing shaft (FSBA) and segmented idler roll (SIR) have been developed that provide the ability to increase control of flatness by a factor of 2 to 6. Mills with automatic shape control can operate with high pass reductions while achieving target flatness profiles.
Mitsubishi Shindoh, a Japanese copper sheet and strip producer, has been operating since 2000 a 26-in. wide Sendzimir Z-mill with a pre-stressed split housing supplied by Sendzimir Japan, Ltd. The mill includes Sendzimir’s patented Flexible Shaft Backing Assemblies for improved control of strip shape and is rolling copper and copper alloys.
The first cluster mills with small-diameter work rolls came on the market in the early 1930s. They were initially used to roll low-carbon steel and very special materials in narrow widths. It was only in 1950 that the industry fully recognized the suitability of the Sendzimir cluster mill for rolling stainless steel.
Nisshin Steel Co. placed the world’s
first Sendzimir tandem mill into operation at its Shunan works in 1969. Located
in Nanyo, Japan, the plant occupies a site of approximately one-third square
mile. Occupying about 18 percent of the 315-ft total installation length are
four Sendzimir stands: one ZR 22N-50 and three ZR 21B-50. Once up and running,
the mill’s maximum finished monthly production capacity totaled 18,300 net
tons -- 35 percent 400 series; 65 percent 300 series stainless steel.
Paper presented at the AISE in 2003 documenting the design and implementation of the Sendzimir Shapemeter into 20-High and 4-High mills.
1931 FIRST continuous galvanizing line put into operation at Kostuchna Poland. Today, close to 6,000,000 tons/year are produced on galvanizing lines whose design is based on Sendzimir's original patent. . .
Aluchrom 7Al YHf is an alloy of chromium, iron, and rare earth elements with as much as 7% aluminum by weight. This composition can heat up faster than any other material used in catalytic converters because of its relatively high thermal resistivity and its ability to be rolled to as thin as 0.001 inch (0.025 mm) without jeopardizing the material’s operating life. Moreover, the extreme thinness maximizes surface area, and thus catalytic efficiency, without increasing the weight or volume of the unit or its resistance to airflow. MK Metallfolien GmbH (MKM), established in 1999 to roll ultrathin foil, is investing $10 million in a Sendzimir ZR 24C-15, a slitting line, and related equipment that will roll materials such as Aluchrom 7 Al YHf to ultrafoil thinnesses of 0.0008 inch (0.02 mm) at custom widths. PDF version
Armco Coshocton has modernized its first Z-High® Mill, installed in 1981, to meet the design specifications of its second Z-High, installed in 1997. Z-High insert changes are now particularly easy at Coshocton because the lateral adjustment mechanism is attached to the mill housing instead of to the Z-High cartridge, thus minimizing the number of hydraulic connections and reducing the cost of spare Z-High inserts.
T. Sendzimir Inc.—originator of the cluster mill design—is modifying its existing Z-High® mill to make it compatible with operating conditions within the continuous casting environment. Sendzimir officials claim that standard rolling-mill equipment has difficulty obtaining the high-value gages, strip profiles, and surface qualities that the Z-High customarily achieves. However, to satisfy the constraints of the continuous casting environment, the Z-High design also must be fully compatible with process-line conditions. Thus, the new Process-Line Z-High.
Sendzimir achieved its initial success in 1943 when it succeeded in satisfying consumer demands where others could not. The steel company ARMCO, in Middletown, Ohio, USA, had been asked to find a way to roll 3.5 per cent silicon grain-oriented steel down to 0.05 mm for the production of small transformers that would make airborne radar possible.
Cluster mills first came into existence in the 1930s. They are characterized by small-diameter work rolls that are supported by a cluster of rolls
Tadeusz Sendzimir was born in Lwow, (then) Poland, in 1894, the eldest of four children and the son of a civil servant. World War I put an end to his formal education, and he fled to China, . . .
The skinpass/leveler section of a galvanizing line is designed to give the sheet, in conjunction with a zinc bath, its final characteristics of resistance, pliability, flatness, and surface condition. The principle was adopted more than 30 years ago and consists of passing the strip through a rolling mill and roller-leveler while first imposing on it very high tension.
In 2001, Jupiter Aluminum placed a contract with Sendzimir for a Z-High® mill. More commonly associated with steels, what is the Z-High® and what can it do for aluminum rollers?
Sendzimir mills have traditionally been associated with the superior cold rolling of hard-to-roll materials such as stainless steel. What is not so readily apparent is that this concept is being profitably applied to hard aluminum alloys. The Z-High® Mill, which was developed several years ago to preserve the advantages of both the high-performance 20-high cluster mill and the economical 4-high mill, can roll products that are superior to those rolled on a 4-high when thickness, strength, or gauge accuracy are the criteria, as is true for automobile panels and aircraft shells. The characteristics of the Z-High® Mill assure more consistently high profit margins when the rolling of hard aluminium alloys or significant operating flexibility are desired. PDF version