钢结构热矫正工艺评定试验方法研究  

Study on Heat Straightening Procedure Qualification Testing Method for Steel Structure

作　　者：白晓科 程尚华[1] 王旭[1] BAI Xiaoke;CHENG Shanghua;WANG Xu(Penglai Jutal Offshore Engineering Heavy Industries Co.,Ltd.,Yantai 265609,China)

机构地区：[1]蓬莱巨涛海洋工程重工有限公司,山东烟台265609

出　　处：《电焊机》2024年第5期148-152,共5页Electric Welding Machine

基　　金：山东省重点研发计划(2020CXGC010304)。

摘　　要：热矫正是一种调整钢结构尺寸的工艺,其中火焰矫正是最常用的方法,它通过局部加热和冷却来改变钢材的应力状态,实现矫正目的。欧洲钢结构规范EN1090-2要求进行火焰矫正工艺评定,但当前的国际和国内规范并未具体规定热矫正工艺评定的试验方法。热矫正工艺评定试验需要考虑母材性能、热源、加热控制和冷却控制等影响因素,并将这些因素分为重要因素和次要因素。提出了浅表热矫正和全厚度热矫正的试板形式和尺寸,以及热矫正过程中需要详细记录的各项变素。将拉伸、冲击、硬度试验和微观金相试验作为评定热矫正效果的检验内容。研究得出结论,建议根据钢结构的材质、厚度和工厂具体情况,拟定热矫正工艺评定方案,组织试板的热矫正工艺试验和理化试验,并编制热矫正工艺指导书。此外,培训具备相应技能水平的热矫正作业人员,以保证热矫正作业要求的有效执行。通过工艺评定和技能两方面的保证,确保热矫正后钢结构的产品质量。To explore the experimental methods for the evaluation of thermal correction processes in steel structures,in or‐der to meet the requirements of the European steel structure specification EN1090-2 for the assessment of flame correction processes,and to fill the gap in the specific requirements for the evaluation of thermal correction processes in the current specifications.The factors affecting the performance of steel during thermal correction were analyzed,including the proper‐ties of the base metal,the heat source,the heating control,and the cooling control.Based on these influencing factors,an ex‐perimental method for the evaluation of thermal correction processes was proposed,including the heating method for the evaluation test plates,the recording of the test process,and the content of the inspection.Through the process evaluation ex‐periments,key evaluation variables for thermal correction processes were identified,and these variables were divided into important factors and secondary factors.Tensile,impact,hardness tests,and micrographic metallographic tests were used as the content for evaluating the effects of thermal correction.The study concluded that it is recommended to formulate a ther‐mal correction process evaluation plan according to the material,thickness,and specific conditions of the factory for steel structures,organize thermal correction process experiments and physical and chemical tests for the test plates,and compile a thermal correction process guide.In addition,train thermal correction operators with the corresponding skill level to ensure the effective implementation of thermal correction work requirements.

关 键 词：钢结构 热矫正 火焰矫正 工艺评定 

分 类 号：TU391[建筑科学—结构工程]