论文部分内容阅读
氢是钢中有害杂质,会引起钢材一系列缺陷。要提高电炉钢质量,就必须降低氢含量,而最经济的方法是设法在冶炼过程中降低熔池中氢含量。为此我们研究了电炉熔池中氢的行为,找出工艺因素对氢含量的影响。研究是在15吨碱性电炉中进行的,是用氧化法与返回吹氧法冶炼GCr15,装入量是20吨。所用的造渣材料、脱氧剂与合金料预先经过烘烤,广泛采用了吹氧助熔和吹氧矿石复合脱碳,在扒除氧化渣后插铝0.5公斤/吨钢,还原期采用电石渣转白渣的造渣制度,出钢过程中进行同炉或异炉渣洗。在冶炼过程中分别在熔毕、氧化中、氧化末、造薄
Hydrogen is a harmful impurity in steel and can cause a series of defects in steel. To improve the quality of EAF, it is necessary to reduce the hydrogen content. The most economical way is to reduce the hydrogen content in the weld pool during the smelting process. To this end, we studied the behavior of hydrogen in the electric furnace bath to find out the impact of process factors on hydrogen content. The study was carried out in a 15-tonne alkaline electric furnace with a GCr15 oxidation and back-blowing oxygen process with a loading capacity of 20 tons. The slagging material, deoxidizer and alloy material used are roasted in advance, and the oxygen blowing and oxygen blowing composite decarburization are widely adopted, and 0.5 kg / ton of steel is inserted after removing oxide slag, and the carbide slag White slagging slag system, tapping the same furnace or different slag wash process. In the smelting process were completed in the melting, oxidation, the end of oxidation, making thin