TP304L不锈钢凝固模式对荒管内壁翘皮的影响  

Effect of solidification mode of TP304L stainless steel on the inner wall upwarping of pierced billet

作　　者：史茜 冯惠伟 唐明琦 杜雯雯 杨雪澜 李少正 SHI Xi;FENG Huiwei;TANG Mingqi;DU Wenwen;YANG Xuelan;LI Shaozheng(Yongxing Special Stainless Steel Co.,Ltd.,Huzhou 313005,China)

机构地区：[1]永兴特种不锈钢股份有限公司,浙江湖州313005

出　　处：《炼钢》2018年第6期61-63,74,共4页Steelmaking

摘　　要：针对TP304L不锈钢圆钢在穿孔后出现不同程度的内壁翘皮现象,对内壁翘皮样品进行高倍测试及组织分析。分析结果表明:荒管内壁形成翘皮的主要原因是板条状铁素体造成,出现板条状铁素体的原因是由于其凝固模式造成的。凝固模式由FA模式调整到AF模式后,内壁翘皮问题解决。Aiming the upwarping in the inner wall after TP304L stainless steel pierced,the organization of upwarping samples were analysied by high magnification electron microscope.The result shows that the main reasons for the formation of cracks on the inner wall is the lath ferrite,and the lath ferrite is due to solidication mode.The question was solved after the solidification mode was adjusted from FA mode to AF mode.

关 键 词：TP304L不锈钢 翘皮 组织 铁素体 凝固模式 

分 类 号：TG142.11[一般工业技术—材料科学与工程]