温度对Cr5冷轧辊钢断裂韧度影响的试验研究  

Experimental study on temperature influence to fracture toughness of Cr5 cold roll steel

作　　者：姜晶晶[1] 林卓英[1] 冯淼林[1] 孟祥琦[1] 蔡晓静[1] 刘飞[1] 

机构地区：[1]上海交通大学船舶海洋与建筑工程学院,上海200240

出　　处：《锻压技术》2012年第4期135-139,共5页Forging & Stamping Technology

基　　金：国家自然科学基金资助项目(10932007)

摘　　要：由于轧辊作为轧机的关键部件,在工作过程中承受着很大的轧制应力以及受到非定常热影响,因此,研究轧辊在温度变化条件下的断裂韧性具有重要的意义。本文通过对Cr5冷轧辊钢制备三点弯曲试样,在353,323,293和273K环境温度下进行了断裂韧度试验,计算得出Cr5钢材随温度变化的KIC值。结果显示,随着温度的降低,Cr5冷轧辊钢的断裂韧度也相应减小。同时,从断裂韧度的角度,研究了温度变化条件下Cr5冷轧辊钢的适应性能,实验数据可以为轧辊在工程设计中的应用提供参考。As a key component of the rolling mill, the roll is undertaken a large quantity of rolling stress and unsteady heat. It is of vital significance to do research on the fracture toughness of rolls with temperature. Three-point bending specimens made of Cr5 cold rolls were conducted to measure the fracture toughness Kic under the various temperatures of 353, 323, 293 and 273 K. It is found that the fracture toughness of the material descends with the decrease of the temperature. The study on the property of the fracture toughness for Cr5 cold roll steel can provide a reference for the engineering design.

关 键 词：Cr5冷轧辊 轧制应力 断裂韧度 

分 类 号：TG333.17[金属学及工艺—金属压力加工]