摘要
基于SYSWELD模拟,针对大型主索鞍鞍头与座体的对接焊缝,分析了材料焊接性,模拟了一定热输入条件下的焊接温度场、焊缝及热影响区的组织分布。模拟表明:热输入越大,焊缝及热影响区经800~500℃冷却所需时间越长,较硬脆的马氏体、贝氏体组织含量越少,而韧塑性较好的铁素体+珠光体的组织含量越多。该研究给出了铸焊式主索鞍较合理的焊接工艺方案,为大型铸焊式主索鞍的焊接生产提供了设计思路,对降低生产成本、提高产品质量具有重要应用价值。
Based on SYSWELD software simulation,the authors analyzed the material weldability regarding the butt welds between the saddle-bow and the cable saddle's base. The welding numerical simulation on the temperature fields,the distributions of microstructure in the weld zone and HAZ were carned on. The simulation results showed that the more the heat input's energy,the longer the duration that the weld zone and HAZ spent the time cooling from 800~500 ℃,the less the martensite and bainite with a little bit hard and brittle,in the contrast,the more the ferrite and peralite with the better plasticity and toughness. The research worked out the welding process and schedule,provided the design solution for the welding production of large scale castwelded main cable saddle,being the important application values for reducing the cost and increasing the production quality.
出处
《焊接技术》
2017年第11期41-45,共5页
Welding Technology
