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Production method to improve the precipitation strengthening effect of in-line Ti microalloyed hot rolled high strength steel
Production method to improve the precipitation strengthening effect of in-line Ti microalloyed hot rolled high strength steel
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机译：提高在线Ti微合金化热轧高强度钢的析出强化效果的生产方法
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摘要
The production method to improve the precipitation strengthening effect of in-line Ti microalloyed hot rolled high strength steel is obtained by casting molten steel with the addition of microalloy element Ti to obtain slabs, after heating, through rough rolling, finishing rolling, laminar cooling and winding. Obtaining a hot rolled roll, covering the insulating cover inline after stripping and moving into the coil yard along the transport chain to enter, and after reaching the inline insulating time, removing the insulating cover and air cooling to room temperature; Here, the content of the fine alloy element Ti is ≥ 0.03 wt%; The coiling temperature is 500 ~ 700 ℃, the step of covering the insulated cover in the inline refers to independently covering within 60 minutes after each hot rolling roll is stripped, and individually covering the closed thermal insulation cover device, and the inline warming time. Is ≥ 60 minutes. The above method is low cost, high efficiency, and is not affected by the surrounding environment.
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