管线钢板探伤不合分析及解决措施
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摘要
针对鞍钢股份有限公司鲅鱼圈钢铁分公司管线钢钢板探伤合格率低的问题,采取了LF炉配制低熔点精炼渣系、优化RH喂线工艺、延长钢水镇静时间、提高中间包钢水过热度等措施后,提高了管线钢铸坯的纯净度,轧后钢板探伤合格率由75.00%提高到97.36%。
In allusion to the problem of the low pass percent of the flaw detection for the steel plates for pipeline in Bayuquan Branch of Angang Steel Co., Ltd., such measures as preparing the slag system with low melting point for refining in LF, optimizing wire feeding process for RH, prolonging the holding time of molten steel and increasing overheating degree of the molten steel in tundish were taken. By taking these measures the cleanliness of continuous casting slabs for pipeline steel was improved and then the pass percent of the flaw detection for the steel plates produced by rolling these slabs was improved to 97.36% from 75.00%.
In allusion to the problem of the low pass percent of the flaw detection for the steel plates for pipeline in Bayuquan Branch of Angang Steel Co., Ltd., such measures as preparing the slag system with low melting point for refining in LF, optimizing wire feeding process for RH, prolonging the holding time of molten steel and increasing overheating degree of the molten steel in tundish were taken. By taking these measures the cleanliness of continuous casting slabs for pipeline steel was improved and then the pass percent of the flaw detection for the steel plates produced by rolling these slabs was improved to 97.36% from 75.00%.
引文
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[2]张旭升,关勇,吕春风,等.新型LF炉精炼炉渣的研制与应用[J].鞍钢技术,2006(2):33-35.
[3]陈跃峰,王雨.精炼炉渣组成婶钢一渣硫分配比的影响[J].特殊钢,2007,28(4):36-38.
[4]张建,姜钧普,高吉吉,等.钢包喂CaSi线对钢中夹杂物变性的影响[J].炼钢,2000,16(2):26-30.
[5]张强,许可,杨森祥,等.转炉冶炼GCr15轴承钢质量控制实践[J].炼钢,2013,29(4),15-17.
[6]杨伶俐.管线钢LF精炼效果分析[J].炼钢,2012,28(6),37-39.