Q550D低合金高强钢在塔式起重机的焊接工艺研究及应用  

A Study of Welding Process for Q550D Low Alloy High Strength Steel for Tower Crane Jib

作　　者：张欣 Zhang Xin(Shanxi Construction Machinery Co.,Ltd.,Taiyuan Shanxi 030000,China)

机构地区：[1]山西省工程机械有限公司,山西太原030000

出　　处：《机械管理开发》2025年第2期248-250,253,共4页Mechanical Management and Development

摘　　要：伴随建筑工业的快速发展,对高性能、高强度、轻量化塔式起重机的需求愈演愈烈。介绍了Q550D低合金高强钢在塔式起重机上的焊接工艺,采用优化后的焊接工艺参数组合,预热温度为150~200℃,多层多道可实现优质Q550D低合金高强钢焊接接头。重点研究了该焊接接头的拉伸性能、弯曲性能、冲击性能,检验结果均满足标准,焊接接头力学性能良好,为Q550D低合金高强钢在塔式起重机中的应用提供了重要的理论依据。Along with the rapid development of the construction industry,the demand for high-performance,high-strength,lightweight tower cranes is intensifying.This paper introduced the Q550D low alloy high strength steel in the tower crane welding process,using the optimized combination of welding process parameters,preheating temperature of 150~200℃,multi-layer multi-channel can be achieved high-quality Q550D low alloy high strength steel welded joints.Focused on the study of welded joint tensile properties,bending properties,impact properties,test results are to meet the standards,welded joints mechanical properties are good,for the Q550D low alloy high-strength steel in the tower crane provides an important theoretical basis for the application.

关 键 词：塔式起重机 Q550D 焊接接头 力学性能 

分 类 号：TH213.3[机械工程—机械制造及自动化]