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CN1243884A 一种超细组织微合金钢控制轧制方法 失效 - 权利终止

一种超细组织微合金钢控制轧制方法
摘要：
一种超细组织微合金钢控制轧制方法,属于合金钢生产工艺领域,工艺流程为:加热—再结晶控轧—应变诱导轧制—加速冷却,首先钢坯加热至1150℃—1220℃使微合金元素充分溶解,出炉后在900—1150℃实施两道次控轧,每一道次的变形量在20—40%之间,然后在800—840℃对钢坯实施三道次应变诱导轧制,每道次的变形量为30—50%,再以≥10℃/S的冷却速度实施加速冷却。该方法生产的微合金钢晶粒尺寸为0.9—1.2μm,而且生产成本低。
摘要（英）：

A controlled rolling technology for microalloy steel with superfine structure includes such technological steps as heating steel billet to 1150-1220 deg.C to dissolve microalloy elements fully, discharging from furnace, controlled rolling twice at 900-1150 deg.C with 20-40% of deformation for the first pass, strain induction rolling three passes at 800-840 deg.C with 30-50% of deformation for each pass, and quick cooling at the speed higher than 10 deg.C/S. The size of crystal grain for obtained microalloy steel is 0.9-1.2 microns. Its production cost is low.

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