Processing method and device based on high-pressure water jet cavitation effect
Inactive Publication Date: 2016-12-14
JIANGSU UNIV
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[0005] For this reason, the present invention proposes a kind of brand-new processing method, does not
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Embodiment 1
[0030] Embodiment 1: The material of the workpiece 14 used in this embodiment is ordinary steel with a hardness of HB=200. The thickness H=5mm and the diameter D based on the high-pressure water jet cavitation effect are described in detail in conjunction with the accompanying drawings. 1 =10mm through hole processing, which includes the following steps:
[0031] (1) Start the high-pressure pump set and run it for 10 minutes without load, and all indicators are normal;
[0032] (2) Control the pressure regulating valve, and wait for the pressure gauge 5 to rise slowly to 150MPa for 30 minutes, indicating that the high-pressure pump unit is operating normally, the system has no obvious leakage, the pressure is stable, and meets the implementation requirements;
[0033] (3) Fill the high-pressure vessel 11 with water and the height d from the water surface to the upper edge of the cavitation nozzle 12 1 =180mm, and pressurized so that the pressure p in the high pressure vessel ...
Embodiment 2
[0041] Embodiment 2: The material of the workpiece 14 used in this embodiment is ordinary steel with a hardness of HB=200. The thickness H=5 mm and the diameter D based on the high-pressure water jet cavitation effect are described in detail in conjunction with the accompanying drawings. 1 =10mm through hole processing, which includes the following steps:
[0042] (1) Start the high-pressure pump set and run it for 10 minutes without load, and all indicators are normal;
[0043] (2) Control the pressure regulating valve, and wait for the pressure gauge 5 to rise slowly to 150MPa for 30 minutes, indicating that the high-pressure pump unit is operating normally, the system has no obvious leakage, the pressure is stable, and meets the implementation requirements;
[0044] (3) Fill the high-pressure vessel 11 with water and the height d from the water surface to the upper edge of the cavitation nozzle 12 1 =180mm, and pressurized so that the pressure p in the high pressure vessel...
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Abstract
The invention discloses a processing method and device based on a high-pressure water jet cavitation effect, and relates to the technical field of removal manufacturing. The high-pressure water jet is utilized to generate the cavitation effect to perform denudation processing on a workpiece to form a required shape through accumulation. The device comprises a jet flow generation system, a high-pressure submersion system, a water tank, a high-pressure hose and a filter. According to the device, when a high-pressure water jet cavitation group moves to the surface of the workpiece, the cavitation group is broken due to stagnation pressure generated from retardation of the workpiece, about (5000 +/- 200)K of hot stops are generated for material melting and weakening, and the fatigue threshold of materials is decreased; fatigue fracture of the materials is caused under the composite action of high-frequency high-pressure shock waves, round block-shaped denudation is achieved, and removal manufacturing is achieved; and the device is simple in structure, easy to maintain, relatively low in cost and low in environmental pollution, and can process various materials and micro parts difficult to shape.
Description
technical field [0001] The invention relates to the fields of mechanical manufacturing and material forming, in particular to the technical field of material removal manufacturing and processing, in particular to a processing method and device based on the cavitation effect of high-pressure water jets. Background technique [0002] In the industrial field, there are more and more occasions where various difficult-to-form materials and miniature parts are used, such as the application of high-strength steel, high-performance aluminum alloy, and titanium alloy. The application of magnesium alloy is gradually expanding, and the structure is developing towards miniaturization. Forming is becoming more and more difficult, not only the processing difficulty brought about by the improvement of material properties, but also the complexity brought about by the small structure of the workpiece. For example, the steel is increased from 250MPA to 1000MPA, and the plasticity is reduced fr...
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Application Information
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