采用超快冷工藝提高高強超厚H型鋼強韌性的研究與應用

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摘 要：采用超快冷工藝生產厚規(guī)格高強度H型鋼，翼緣表面產生粒狀或板條狀貝氏體，使相變強化在H型鋼中起著非常重要的作用，心部位置的晶粒更細小，同時帶狀組織的級別有效降低，有效提高H型鋼的強度和韌性。

關鍵詞：超快冷工藝；貝氏體；相變強化

RESEARCH AND APPLICATION OF TMCP TO IMPROVE THE STRENGTH AND TOUGHNESS OF HIGH STRENGTH AND SUPER THICK H-SHAPED STEEL

Wei Zhenzhou    Liu Chunying    Zhang Nianhua    Wang Hailong

（Rizhao Steel Co.， Ltd.    Rizhao    276806，China）

Abstract：The TMCP is used to produce thick high-strength H-beam steel. Granular or strip bainite is produced on the flange surface， so that phase transformation strengthening plays a very important role in H-beam steel. The grain at the core is smaller， and the grade of ribbon structure is effectively reduced， which effectively improves the strength and toughness of H-beam steel.

Key words： TMCP；bainite；phase transformation strengthening

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高強度厚規(guī)格H型鋼典型牌號為英標打樁鋼S460J0，規(guī)格尺寸H337.9 mm×325.7 mm×30.3 mm×30.4 mm，主要用于香港市場房屋建筑體系。（剩余3269字）