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Kubo Y.,Surface Treatment Research Laboratory | Hanya K.,Steel Structure R and nter | Kodama S.,Welding and Joining Research Center
Nippon Steel Technical Report | Year: 2012

The contribution to energy savings through reduced iron loss of non-oriented electrical steel sheet for motors and the development of stainless steels with good corrosion resistance and aesthetic appeal may be cited as cases in point. When steel sheet with lubricating film is used for the cartridge tank of an oil-powered fan heater, for example, since the film itself plays the same role as paint with good corrosion resistance, the prescribed corrosion resistance can be secured even if the painting process after press forming is omitted. As a base resin, a polyurethanebased resin has been adopted in view of the relationship between tensile strength and longation. The underlying concept is that the resin used for film is designed and developed based on an understanding of the properties of various base metals, plating types and resins, and that the lubricant and other functional materials are designed so as to develop various types of films with not only high lubricating performance, but also good corrosion resistance, formability, and electrical conductivity. This concept has also been applied to the development of various films for surface-treated steel sheets. Source

Kanno R.,Steel Structure R and nter | Tsujii M.,Steel Structure R and nter | Hanya K.,Steel Structure R and nter | Matsuoka K.,Steel Structure R and nter | And 2 more authors.
Nippon Steel Technical Report | Year: 2012

The performance of steel materials, on the other hand, has been improved to help promote the development of infrastructure. Out of the global steel consumption of about 1,300 million tons, 45% is for construction. The use of steel materials for construction is estimated to exceed 50% in China and top 60% in India, Mexico and Indonesia, respectively. In the future, it is expected that demand for steel materials in the field of infrastructure will continue to increase and that uses for steel materials will become increasingly diverse. Fire-resistant steels, unbonded braces and steel-framed houses are among typical examples. The development of fire-resistant steel overturned the established theory that structural steel offered poor fire resistance. The advent of fireresistant steel led to the birth of a market for steel building frames without fire-resistant covering. The practical application of unbonded braces has made it possible to spread the damage-controlled structure, in which the damage caused during an earthquake is confined to certain structural members, and the development of steel-framed houses has dramatically expanded the use of steel sheets around 1mm in thickness. Source

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