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CN106435209B 一种导电结晶器电渣重熔制备H13钢的方法 有权

一种导电结晶器电渣重熔制备H13钢的方法
摘要：
一种导电结晶器电渣重熔制备H13钢的方法：1)萤石、石灰、氧化铝和电熔镁砂为原料，混合得渣料；2)烘烤渣料；3)放置引弧环、引弧剂和渣料；4)通过开关闭合与断开，使电流路径为电源→自耗电极→渣料→底水箱→电源，起弧在惰性气体保护下化渣；5)当渣料全部熔清，通过开关闭合与断开，使电流路径为电源→自耗电极→渣池→导电结晶器→电源；在惰性气体保护下，启用导电结晶器进行电渣重熔，并加入铝粒脱氧；6)当电渣重熔补缩结束，关闭气阀，脱模得钢锭，退火处理，随炉冷却，得H13钢；本发明方法解决了传统电渣重熔技术采用低熔速冶炼表面质量较差的问题；采用导电结晶器和改变电流的路径，获得表面和内部质量均良好的电渣锭。
摘要（英）：

The invention discloses a method for preparing H13 steel by electroslag remelting of an electric conducting crystallizer. The method comprises the following steps: 1) fluorite, lime, aluminum oxide and fused magnesite are used as raw materials, and are mixed to obtain slag; 2) the slag is baked; 3) an arc striking ring, an arc striking agent and the slag are put; 4) through switching-on and switching-off, a current path adopts power supply-consumable electrode-slag-bottom water tank-power supply; and the arc striking is slagged under protection of inert gas; 5) when the slag is totally fused, through switching-on and switching-off, the current path adopts power supply-consumable electrode-slag pool-electric conducting crystallizer-power supply; under protection of the inert gas, the electric conducting crystallizer is started for electroslag remelting; and aluminum particles are added for deoxidation; and 6) when the electroslag remelting feeding is finished, a gas valve is closed; a steel ingot is obtained by demolding; and the steel ingot is annealed and cooled along with a furnace to obtain the H13 steel. The method solves the problem of poor surface quality due to low-melting-speed smelting in a traditional electroslag remelting technology, and adopts the electric conducting crystallizer and changes the current path to obtain an electroslag ingot with excellent surface and internal quality.

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