Flame Cutting Heat Affected Zone Range of 50Mn Steel Plate with Different Thickness
摘 要
针对不同厚度50Mn钢板火焰切割取样过程中,取样范围较难确定的问题,通过试验和数值模拟研究了5 mm厚度50Mn热轧钢板在氧-乙炔火焰切割条件下热影响区的范围,并进行了硬度试验来验证模拟精度;利用热力学分析软件FLUNT对不同厚度50Mn钢板火焰切割过程进行温度场模拟,得到了不同厚度50Mn钢板火焰切割的热影响区范围;最后对热影响区宽度和钢板厚度进行了线性拟和,确定了最小加工余量Y与50Mn钢板厚度x的关系为Y=1+int(10.31+0.11x)。
Abstract
In order to solve the problem that it is difficult to determine the sampling range in the flame cutting sampling process of 50Mn steel plates with different thickness, the range of the heat affected zone of 5 mm thickness 50Mn steel plates under oxygen-acetylene flame cutting conditions was studied by experiment and numerical simulation, and the simulation accuracy was verified by hardness test. The temperature field of 50Mn steel plates with different thickness during flame cutting process was simulated by using the software FLUNT, and the range of the heat affected zone in flame cutting of 50Mn steel plates with different thickness was obtained. The width of the heat affected zone and the thickness of the steel plates were linearly fitted, and the relationship between the minimum machining allowance Y and the thickness of 50Mn steel plates x was Y=1+int(10.31+0.11x).
中图分类号 TG481.1 DOI 10.11973/lhjy-wl201905005
所属栏目 试验技术与方法
基金项目 国家质量基础的共性技术研究与应用专项(2018YFF0215502);广东省重大科技专项(2017B010116005)
收稿日期 2019/1/17
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备注周崎(1974-),男,高级工程师,主要从事金属材料检测方面的研究,13533415892@163.com
引用该论文: ZHOU Qi,LI Hao,WANG Jinsha,CHEN Guifeng. Flame Cutting Heat Affected Zone Range of 50Mn Steel Plate with Different Thickness[J]. Physical Testing and Chemical Analysis part A:Physical Testing, 2019, 55(5): 305~310
周崎,李浩,王尽沙,陈桂丰. 不同厚度50Mn钢板火焰切割热影响区范围[J]. 理化检验-物理分册, 2019, 55(5): 305~310
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【3】孙震,徐惟诚,陆海兵. B-HARD400钢板自动火焰切割热影响区深度的判定[J]. 理化检验(物理分册),2015,51(4):243-247.
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【5】蒋同武. 数控火焰切割机下料件热变形的控制措施[J]. 爆炸性环境电气防爆技术,1997(1):28-29.
【6】俞昊,林其钊,胡超. 火焰切割割缝宽度的实验与数值模拟研究[J]. 工业加热,2017,46(6):29-31.
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