|
| 基于热加工图的锻造斗齿用钢热加工工艺参数 |
| Hot Processing Parameters of Steel for Forging Bucket Teeth Based on Processing Maps |
| Received:January 20, 2017 Revised:March 10, 2017 |
| DOI：10.3969/j.issn.1674-6457.2017.02.008 |
| 中文关键词: 热加工图 低合金耐磨钢 锻造斗齿 高温变形行为 |
| 英文关键词: processing map low-alloy wear-resistant steel forging bucket teeth high temperature deformation behavior |
| 基金项目:郑州市科技重大专项资金（152PZDX007） |
| Author Name | Affiliation | | XU Wu-yang | Zhengzhou Research Institute of Mechanical Engineering, Zhengzhou 450001, China | | LIU Hua | Zhengzhou Research Institute of Mechanical Engineering, Zhengzhou 450001, China | | LIU Bai-xuan | Zhengzhou Research Institute of Mechanical Engineering, Zhengzhou 450001, China | | CAO Jun-hui | Zhengzhou Research Institute of Mechanical Engineering, Zhengzhou 450001, China | | SUN Hong-xing | 1.Zhengzhou Research Institute of Mechanical Engineering, Zhengzhou 450001, China
2.School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an 710049, China | | WU Sheng-chao | Zhengzhou Research Institute of Mechanical Engineering, Zhengzhou 450001, China |
|
| Hits: 4837 |
| Download times: 3511 |
| 中文摘要: |
| 目的 制定一种锻造斗齿用新型低合金耐磨钢的热加工工艺参数。方法 采用Gleeble-1500D 热模拟试验机对实验钢进行高温压缩，在变形温度为1173～1473 K，应变速率为0.01～10 s-1 条件下，压缩变形60%，得到其真应力-真应变曲线。依据压缩实验数据，基于动态材料模型，建立材料的热加工图，分析实验钢在不同热变形条件下的变形特点。结果 该锻造斗齿用低合金耐磨钢在不同应变下的热加工图呈现相近特征，能量耗散系数η 随变形温度的升高而增大，随着应变速率的减小而减小；当应变值大于等于0.3 时，在变形温度为1173~1440 K，应变速率为0.32~10 s-1 范围内，热加工失稳区域随着变形温度的升高而减小，随着应变速率的减小而减小。结论 该锻造斗齿用低合金耐磨钢适宜的热加工工艺参数范围：变形温度为1185~1373K，应变速率为0.01~2 s-1；最优参数范围：变形温度为1330~1340 K，应变速率为0.2~0.5 s-1。 |
| 英文摘要: |
| The paper aims to set the hot processing parameters of new low-alloy wear-resistant steel used for forging bucket teeth. The high temperature compression of testing steel was carried out with Gleeble-1500D thermal-simulation machine. The true stress-true strain curve from the test was obtained at temperatures of 1173~1473 K, with 0.01~10 s-1 of train rates and 60% of compressive deformation. Processing maps for hot processing were built based on a dynamic materials model with the compression test date. The hot deformation characteristics of testing steel under deferent conditions were analyzed. The wear-resistant steel for forging bucket teeth shows similar characteristics within deferent strains. The dissipation factor η of power increased with the increase of deformation temperature and decreased with the decrease of strain rate. When the strain was equal to or over 0.3, the area of hot working instability decreased with the increase of deformation temperature and decreased with the decrease of strain rate at temperature range of 1173~1440 K with strain rate range of 0.32~10 s-1. The appropriate hot processing parameters of testing steel are: temperature range of 1185 K~1373 K and strain rate range of 0.01~2 s-1. The optimal parameter ranges are: temperature range of 1330~1340 K and strain rate range of 0.2~0.5 s-1. |
|
View Full Text
View/Add Comment Download reader |
| Close |
渝公网安备 50010702501719号