鐵素體區(qū)軋制IF鋼試生產(chǎn)實踐

鐵素體區(qū)軋制IF鋼試生產(chǎn)實踐Trial Production Practice of IF Steel by Ferritic Rolling

為了充分發(fā)揮薄板坯連鑄連軋機組的優(yōu)勢，采用鐵素體區(qū)軋制技術(shù)試生產(chǎn)了1爐IF鋼，對試驗鋼冷軋料成品與常規(guī)軋制成品的組織結(jié)構(gòu)和力學性能進行了對比分析。結(jié)果表明：鐵素體區(qū)軋制IF鋼成品在綜合性能上要優(yōu)于常規(guī)軋制成品的，尤其是反映深沖性能的重要指標塑性應(yīng)變比r值比常規(guī)軋制成品的平均值高出約0.2；但試驗鋼成品表面存在典型的熱軋除鱗不良導(dǎo)致的氧化鐵皮缺陷，表面氧化鐵皮問題是其與常規(guī)軋制成品相比存在的劣勢，也是制約其大批量生產(chǎn)的主要難題。

In order to take full advantage of thin slab casting and rolling units, a furnace of IF steel was tried to produce by ferritic rolling technology. The microstructure and mechanical properties of the test steel final products were compared with those of the conventional rolling final products. The results show that the overall performance of the IF steel final products produced by ferritic rolling technology was superior to that of the conventional rolling final products, and especially the plastic strain ratio r value (mean value) which was an important index to reflect the deep drawing properties, was 0.2 higher than that of the conventional rolling final products. However, there was typical hot rolling scale defect on the surface of the test steel final products because of poor descaling. The surface scale defect problem was a disadvantage of the test steel final products compared with the conventional rolling final products, and it was also a major problem restricting its mass production.

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