For the problems presented in the test and some unreasonable parts of the structure of the whole high-pressure water cutting station, further improvement opinions are put forward, so as to provide the theory and basis for the next research and development. In the whole water jet equipment, the selection is made after the trial cutting of high-pressure soft parts. In this way, through the numerical simulation of impinging jet passing through the horizontal divergent premise, the influence of nozzle outlet velocity and impinging height on the material profile pressure can be analyzed. In the seven years since the completion and opening of Shanghai Jiading Expressway in 988, under the guidance of "national highway system planning", China's expressway has achieved sustained, rapid and orderly growth.

The cutting mechanism of high-pressure water jet makes it have the characteristics of F: (because the cutting pressure of high-pressure water jet is high (tens of MPa to hundreds of MPA), the nozzle diameter is small (0.5-5 RAM), the energy is highly concentrated, and the cutting reaction force is small, only 10 kg, which is convenient for automatic saving in the cutting process. In fact, through the high water jet and abrasive grinding and dyeing, the cutting process is accelerated. p. 2. It can be seen that when the transverse (o) is applied between two points, it can be concluded that when the moving speed increases, the impact pressure of the flat papta22,2 (3) of the jet will decrease, so, 2, the cutting depth will decrease, but because the nozzle channel is generally tubular structure, that is, a = 2, the cutting area generation rate will increase And suppose P =: 2.

(4) because high pressure water cutting is non-contact cutting, the material to be cut has no wear on the cutting tool. In the middle of the 9th century, non agglomerated deposits were mined by water jet once in North America. The most useful target distance, d24y, N, an index, is determined by experiment; 2. The impact pressure of nozzle and its influence on cutting field - dimensionless gap target distance; 0. For continuous jet, the realistic target distance is applied between two points inside and outside the nozzle exit section; Bernoulli equation, if the height difference between two points is ignored The next D is the diameter of the nozzle, and the column relation is the transverse velocity of the nozzle.