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Sendzimir Whitepapers

The following pages are articles that various people at Sendzimir have written over the years. Please browse at will to discover stimulating ideas and fodder for future thought. You may find here that science fiction has become science fact!


Tadeusz Sendzimir: Inventor Extraordinaire

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, where he married Barbara Alferieff, of Russian nobility. His first son, Michael, was born; and his first industrial venture, a nail factory, was established there. In the 1930s, Dr. Sendzimir immigrated to the United States, where he resided until his death in 1989 at the age of 95.

Bio of Michael G. Sendzimir

Michael G. Sendzimir was born in Shanghai, China, in 1924. He received his early schooling in Poland and continued his education at La Chataigneraie in Switzerland. He graduated in 1943 from the Manlius School, near Syracuse, New York, after which he served three years in the Army of the United States, rising to the rank of Second Lieutenant. In 1951, he graduated from Columbia School of Engineering in New York with a BS degree in Industrial Engineering. In 1986, he received his Honorary PhD in Science, and in 1993 in Law.

Locations of Sendzimir Mills

Sendzimir Mills are located all around the world. The countries with Sendzimir Mills include…..

Avesta Nyby Bruk Process-Line Z-High® Mill

The concept of using a live reduction mill in a stainless annealing and pickling line was developed in the early 1980s. The objective was to take a live pass on annealed and pickled material to develop the surface in order to see if such a coil of strip could be directly cold rolled instead of having to be processed through a surface grinding line. Also to be investigated were the extent to which gauge could be corrected and reduction achieved. 4-High mills and Sendzimir ZS-type mills averaged reductions of 7-8%. However, they had difficulty with shape control, and the material underwent work hardening.

The Continuous Processing of Stainless Steel at Ugine

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.

Control of Quarter Buckle on Sendzimir 20-High Mills

THE problem of control of strip flatness in cold rolling has challenged the industry for a long time. The problem can be separated into two parts: measurement of flatness; and adjustment of roll gap profile to correct any deviation from the target detected by the measuring device. The flatness measurement problem has largely been solved, and several flatness measuring devices (shapemeters) are now available. These devices all have their limitations, eg, high cost, some are suitable for low tensions only, and frequent discrepancies may be found between their indicated flatness values and actual flatness (as measured subsequently on the strip). However, in general, for a given application, it is possible to obtain a shapemeter that will perform satisfactorily

Copper Producer Likes Advantages of Z-Mill Split Housing Design

Mitsubishi Shindoh, a Japanese copper sheet and strip producer, has been operating since 2000 a 26 in (660 mm). 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.

Development of the Z-High® Design

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.

The First Sendzimir Tandem Mill

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% of the 315-ft (96 meters) 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% 400 series; and 65% 300 series stainless steel.

MK Metallfolien GmbH to Produce Next-Generation Catalytic Converter Materials

In 1995–98, Krupp VDM, Emitec GmbH—the world’s largest manufacturer of metal catalytic converters—the Fraunhofer Institute for Applied Materials Research, and Wuppertal University discovered a new material – Aluchrom YHf – whose cousin, Aluchrom 7Al YHf, promises to meet the stringent new air pollution standards that will soon be imposed on automobiles in the United States and Europe. Patented by Krupp VDM, the alloy contains chromium, iron, and rare earth elements with as much as 7 percent aluminum by weight. The 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 air flow. Variations on this alloy are being produced by others, but Aluchrom apparently has the greatest life.