关键词: 低碳合金钢, 磨料水射流, 切割特性, 切割深度, 切割宽度

Abstract: Low⁃carbon alloy steel is widely used in industrial design such as pressure vessels, vehicles, bridges, etc.By studying the influence of high pressure abrasive water jet on the cutting of low carbon alloy steel, the influence of water jet cutting characteristics on the cutting effect is analyzed, which has certain reference significance for improving cutting efficiency and reducing cutting cost.In the experiment, the five⁃axis linkage NC water cutter cutting machine is used，take Q345B as an example and the effects of cutting pressure, target distance and transverse speed on cutting depth and width are analyzed. The experimental results show that: with the increase of cutting pressure, the depth of cutting increases greatly. but the effect on cutting width is not obvious. Under certain conditions, there is an optimum target distance to maximize the cutting depth, the cutting depth decreases with increasing mobile speed. The target distance has a great effect on the cutting width, but the moving speed has little effect on the cutting width.

Key words: Low carbon alloy steel, Abrasive water jet, Cutting characteristics, Depth of cut, Width of cut