激光切割和数控铣床加工的拉伸试样力学性能差异探究

Exploring the Differences in Mechanical Properties of Tensile Specimens Processed by Laser Cutting and CNC Milling Machines

主要讨论了激光切割工艺和数控铣床加工对拉伸试样力学性能的影响。分别用激光切割机和数控铣床将3 mm以下的薄板加工为拉伸试样,再用全自动拉伸试验机测试其力学性能,得到试样的规定塑性延伸强度、抗拉强度和断后伸长率,并据此分析两种加工方式的差异性。测试结果表明,两种制样方法所得试样的抗拉强度无显著差异,规定非比例延伸强度和断后伸长率存在差异。

The main discussion was on the effects of laser cutting technology and CNC milling machine processing on the mechanical properties of tensile specimens.Thin plates below 3 mm were processed into tensile specimens using laser cutting machines and CNC milling machines,and their mechanical properties were tested using a fully automatic tensile testing machine to obtain the specified plastic extension strength,tensile strength,and elongation after fracture of the specimens.Based on this,the differences between the two processing methods were analyzed.The test results of the two sample preparation methods show that there is no significant difference in tensile strength,but there is a difference in the specified non proportional elongation strength and elongation after fracture.