Φ6.5 mm 60#硬线盘条尖杯状拉拔断裂原因分析  

REASON ANALYSIS FOR POINTY-CUP-LIKE DRAWING BREAK OF 6.5 mm 60# HARD WIRE BAR

作　　者：李娜[1] 

机构地区：[1]河北钢铁集团宣钢公司技术中心,河北宣化075100

出　　处：《河北冶金》2015年第8期57-60,共4页Hebei Metallurgy

摘　　要：采用金相显微镜和电子探针分析仪等方法对Φ6.5 mm 60#硬线盘条在冷拉拔过程中产生的尖杯状断口进行了分析,发现中心偏析区内有较多夹杂物、负偏析区内有网状铁素体,它们都是裂纹易发点。The pointy -cup- like fracture surface of 6.5 mm 60# hard wire bar in drawing is analyzed with metallographic microscope and electron microprobe. It is found that there is much inclusion in central segre- gation zone, net - like ferrite in negative segregation zone, and all of them are where cracks easy to be brought about.

关 键 词：硬线 盘条 拉拔断裂 原因 分析 

分 类 号：TG335.6[金属学及工艺—金属压力加工]