CAJ | 학술논문

为了缩短国内某厂RH轻处理周期，对现行工艺进行了取样研究。结果表明：RH轻处理条件下脱碳阶段表观脱碳速率常数Kc几乎不受初始条件的影响，大约为0.19 min-1；纯循环阶段初期钢水铝比较低且波动较大，随着纯循环时间的延长逐渐升高并趋于稳定。根据研究结果给出了轻处理工艺最佳脱碳时间与纯循环时间的判定标准并进行了推广，工业实践表明，RH轻处理时间平均值降低了4 min，并且钢水具有良好的纯净度。
위료축단국내모엄RH경처리주기，대현행공예진행료취양연구。결과표명：RH경처리조건하탈탄계단표관탈탄속솔상수Kc궤호불수초시조건적영향，대약위0.19 min-1；순순배계단초기강수려비교저차파동교대，수착순순배시간적연장축점승고병추우은정。근거연구결과급출료경처리공예최가탈탄시간여순순배시간적판정표준병진행료추엄，공업실천표명，RH경처리시간평균치강저료4 min，병차강수구유량호적순정도。
In order to shorten the period of RH light treatment process of a domestic steel plant,sampling investigation was carried out in current process.Results showed that the apparent decarburization rate constant was hardly affected by the initial conditions,with the value of about 0.19 min-1;The Als/Alt of steel was low and had a big fluctuation at the begin-ning of pure cycling period,but increased gradually as increasing pure cycling time until to be a stable value. The opti-mum decarburization time and pure cycling time were suggested based on the present investigation. Industrial trials showed that the period of RH light treatment process could be reduced by 4 mins,furthermore,the cleanness of steel was good.