高压磨料水射流切割Q235钢的切深预测模型

Depth Prediction Model of High Pressure Abrasive Water Jet Cutting of Q235 Steel

针对于常用的Q235钢,应用高压磨料水射流切割装置,分别试验研究了泵压、横移速度、靶距以及入射角度等工艺参数对切割深度的影响,建立了基于实测数据的经验数学模型。试验结果表明,切割深度随泵压增大呈现线性增大,随横移速度增大而减小。靶距在4 mm左右,喷嘴横移方向与喷嘴出口射流夹角为105°左右,使得切割深度最大。通过比较模型计算切深与实测切深,得出数学模型对预测切深具有一定的可靠性。

In view of the Q235 steel,experimental study was conducted by application of high pressure abrasive water jet cutting device to investigate the influence of pump pressure, traverse speed,target distance and incident angle on cutting depth,and the empirical mathematical model is established based on measured data. The experimental results show that the cutting depth increase with increasing pump pressure linearly, while decreases with increasing transverse speed. Standoff distance around 4 mm and incident angle about 105° between nozzle traverse direction and water jet direction make cutting depth the maximum. By comparing the model calculation cutting depth with the measured cutting depth,mathematical model has a certain reliability to predict cutting depth.