Method and device for cavitation-erosion accumulation processing
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A processing method and technology of processing devices, which are applied in the fields of machinery manufacturing, material forming, and material removal manufacturing and processing, to achieve the effects of high potential value, low cost and little environmental impact
Active Publication Date: 2016-12-07
JIANGSU UNIV
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[0005] For this reason, the present invention proposes a kind of brand-new processing method, does not involve at home and abroad in this respect at present, so this method has huge potential for development
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Embodiment 1
[0036] Embodiment 1: The material of the workpiece 14 used in this embodiment is ordinary steel with hardness HB=200, and the cavitation accumulation thickness H=5mm, diameter D 1 =10mm through hole processing, which includes the following steps:
[0037](1) Start the high-pressure pump set and run it for 10 minutes without load, and all indicators are normal;
[0038] (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;
[0039] (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 11 1 =1.0MPa;
[0040] (4) Turn on the power switch, and the water in the pool 1 is sent to the filter 2 thro...
Embodiment 2
[0047] Embodiment 2: The material of the workpiece 14 used in this embodiment is ordinary steel with hardness HB=200, and the cavitation accumulation thickness H=5mm, diameter D 1 =10mm through hole processing, which includes the following steps:
[0048] (1) The through-hole mask 19 and the workpiece 14 are laminated by pressing the sheet, and fixed on the workpiece clamping device 9;
[0049] (2) Start the high-pressure pump set and run it without load for 10 minutes, and all indicators are normal;
[0050] (3) 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;
[0051] (4) 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 pressu...
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Abstract
The invention discloses a method and a device for cavitation-erosion accumulation processing, and relates to the technical field of material decrease manufacturing processing. According to the method and the device, which are disclosed by the invention, a cavitation effect is generated by virtue of a high-pressure water jet to carry out exfoliation erosion processing on a workpiece, and a needed shape is formed through accumulation. The device disclosed by the invention comprises a jet generation system, a high-pressure submerging system, a water pool (1), a high-pressure hose (13) and a filter (2). According to the method and the device, which are disclosed by the invention, a bubble cluster of the high-pressure water jet is collapsed due to a stagnation pressure generated by the stagnation of the workpiece while moving to the surface of the workpiece, about 5000+/-200K of heat points are generated for material melting and weakening, thus a fatigue threshold value of a material is reduced; and fatigue fracture of the material is caused and circular block-shaped exfoliation erosion is formed under the composite action of high-frequency high-pressure shock waves, thus material decrease manufacturing is realized. The device disclosed by the invention is simple in structure, easy to maintain, low in cost and less in environmental influence. The method and the device, which are disclosed by the invention, are capable of processing various difficult-to-form materials and micro parts.
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 cavitation accumulation processing method and a device thereof. 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 from 45% to 12%. Strength ...
Claims
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Application Information
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