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[CN 201711268911.2] Hydraulic system of hydraulic press capable of realizing local loading quickly and stably
[CN 201711268911.2] Title of a hydraulic system of a hydraulic press capable of realizing local loading quickly and stably: Application number of a hydraulic system of a hydraulic press capable of realizing local loading quickly and stably: CN 201711268911.2 Applicant: Xi 'an Jiaotong University Application Date: 2017-12-5 Patent Type: Invention Application for a hydraulic system of a hydraulic press capable of realizing local loading quickly and stably, including power output system, pressure control system and loading system, multi-pass and multi-local loading step forming is adopted. The loading area can be continuously changed through low-pressure large-flow pump and high-pressure small-flow pump, so as to ensure that large forming load can be applied to the loading deformation area and small constraint load can be applied to the unloaded area quickly during the forming process. The hydraulic cylinder obtains large flow hydraulic oil in the descending and returning stages, realizing fast descending and fast return; the hydraulic system adopts an integrated cartridge valve, which has rapid response and sensitive action. The charging valve can not only assist in realizing rapid downward movement and rapid return, but also enable the hydraulic cylinder to quickly reduce pressure after completing a loading step, reduce energy consumption and save energy. In the forming process, the local loading area can be changed multiple times within one fire heating, and the forming capacity greater than the overall loading forming under the same installed power can be obtained.
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