三、铬铁加入时间的影响我厂同中央黑色冶金科学研究所共同制定了在精炼开始时期加入铬铁的炼钢操作法,经过了7年的考验,使下述情况获得可能性: 1)缩短精炼时间; 2)用铬铁脱氧改进去除非金属夹杂物的条件; 3)在精炼中期加入铬铁,破坏供热制度,熔池突然变冷,应使热电制度合理化; 4)因为有很多的时间来校正钢液中铬的含量,可以防止铬量分析的不准确。精炼开始时期,加入铬铁,并没有使钢的质量变 Third, the impact of the timing of adding ferrochromium I plant with the Central Black Metallurgical Institute co-developed the beginning of the refining process by adding ferrochrome steelmaking method, after seven years of test, the following possibilities: 1) Shorten the refining time; 2) improve the removal of non-metallic inclusions by deoxidation of ferrochrome; 3) add ferrochromium in the middle of refining to destroy the heat supply system, suddenly cooling the molten pool, and rationalize the thermoelectric system; 4) Of the time to correct the chromium content in the molten steel can prevent the inaccurate analysis of chromium. Refining the beginning, adding ferrochrome, did not make the quality of steel change