304不锈钢管材挤压金属损伤规律仿真研究  

Numerical Simulation of Damage Behavior of Billet During Extruding 304 Stainless Steel Pipe

作　　者：魏燕明[1] 赵严[2] 宁永权[2] 

机构地区：[1]西京学院基础部,陕西西安710072 [2]西北工业大学材料学院,陕西西安710072

出　　处：《热加工工艺》2013年第1期85-86,90,共3页Hot Working Technology

基　　金：中国博士后基金特别资助项目(2012T50818)

摘　　要：在304不锈钢管材挤压成形中,合理、有效调节挤压速度,进而降低坯料金属损伤对于提高管材表面质量和抗应力腐蚀能力有极为重要意义。基于DEFORM-2D软件,研究了准40mm×6mm规格304不锈钢管材挤压过程中坯料金属损伤的分布规律和挤压速度影响规律。结果表明,坯料损伤较大值主要集中在成形管材外侧,厚度约1.3mm;随着挤压速度增大,坯料损伤较大值厚度保持不变,坯料金属损伤峰值不断下降;当挤压速度大于150mm/s之后,坯料金属损伤峰值下降明显减慢。The proper and effective adjusting the extrusion speed, thus reducing metallic damage, has very important significance for enhancing surface quality and stress corrosion resistance in extruding 304 stainless steel pipe. The distribution law of billet metal damage and influence law of the extrusion speed were investigated based on the DEFORM-2D software in extrusion process of φ40 mm×6 mm 304 stainless steel pipes. Results show that the larger damage values are mainly in the lateral pipe, thickness is about lmm. With the increase of the extrusion speed, thickness of the larger damage values is always constant, and peak damage of billet metal decrease continuously; when the extrusion speed is greater than 150 mm/s, the peak damage of billet metal decrease significantly slower.

关 键 词：304不锈钢管材 挤压速度 坯料金属损伤 数值模拟 

分 类 号：TG376.9[金属学及工艺—金属压力加工]