Shanshan Steel breaks through the cold marine corrosive environment of high strength and toughness of H-beam steel “neck” core technology

2024,08,27

Recently, China Iron and Steel Industry Association organized and held by Shandong Iron and Steel Company Limited, Northeastern University, Laiwu Iron and Steel Group Yinshan Steel Company Limited and other units to complete the “very cold marine corrosion environment of high strength and toughness of H-beam steel key technology research and industrialization” scientific and technological achievements of the evaluation will be. Participating members believe that the results of the overall technology has reached the international advanced level, in which the ultra-thin profile billet single-point asymmetric full-protection casting technology has reached the international leading level.

It is understood that marine engineering H steel with its complex cross-section characteristics in the ocean drilling equipment, offshore oil platforms, offshore wind power and other aspects are widely used. In order to adapt to the extreme cold, deep sea marine corrosive environment, lightweight offshore structure construction requirements, marine engineering H-steel to higher strength, better low temperature toughness, excellent corrosion resistance development, however, there are still ultra-thin near the end of the heterogeneous billet gas and high inclusions, multi-dimensional micro-alloying process of cracking susceptibility, hot-rolled H-steel toughness performance is difficult to both and other issues.

The successful development and application of the technology of this project has solved the bottleneck problem of high-end and functionalized section steel production process, and made the multi-dimensional micro-alloying technology in the production of ultra-thin profile billet successfully realized, which is a major technological breakthrough in solving the world-wide problem ofaluminium-containing steel production from profile billet.

For the first time, the key preparation technology of 500MPa hot rolled H-beam with high strength and low temperature resistance has been developed, which leads the development of advanced technology of section steel at home and abroad, and provides advanced steel material support for the vigorous development of the marine strategy and the exploitation of marine resources, which is of great significance to the promotion of China's construction of a strong marine country.

Author:

Mr. Richard

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