X70-degree large deformation resisting pipeline steel plate with excellent tenacity and preparation method for pipeline steel plate
The invention provides an X70-degree large deformation resisting pipeline steel plate with excellent tenacity and a preparation method for the pipeline steel plate, and belongs to the technical field of low-carbon micro-alloy steel. The pipeline steel plate comprises the following chemical constitue...
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Main Authors | , , , , , , , , , , |
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Format | Patent |
Language | Chinese English |
Published |
04.07.2012
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Subjects | |
Online Access | Get full text |
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Summary: | The invention provides an X70-degree large deformation resisting pipeline steel plate with excellent tenacity and a preparation method for the pipeline steel plate, and belongs to the technical field of low-carbon micro-alloy steel. The pipeline steel plate comprises the following chemical constituents by weight percent: 0.03 to 0.08 percent of C, 0.10 to 0.45 percent of Si, 1.40 to 1.69 percent of Mn, 0 to 0.015 percent of P, 0 to 0.005 percent of S, 0.01 to 0.06 percent of Alt, 0.01 to 0.05 percent of Nb, 0.004 to 0.014 percent of Ti, 0 to 0.008 percent of N, and 0 to 0.0002 percent of H, and further comprises one to four types of the following chemical constituents by weight percent: 0 to 0.30 percent of Mo, 0 to 0.30 percent of Ni, 0 to 0.30 percent of Cr, 0 to 0.30 percent of Cu, andFe and unavoidable impurity elements in balancing amount. The preparation method comprises the following steps: revolving furnace smelting, outside furnace refining, continuous casting, heating, controllable rolling, accelera |
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Bibliography: | Application Number: CN2012150196 |