Jet stream type erosion abrasion test device

Abstract

The invention discloses a jet type erosive wear test device which comprises a centrifugal pump and a connecting pipeline, wherein one end of the pipeline is firmly connected with a nozzle, the front end of the nozzle is corresponding with the position of a sample, the lower part of the nozzle and the sample is provided with a storage hopper, the storage hopper is leftwards and rightwards partitioned into an A chamber and a B chamber by a layer of filter screen, the interior of the storage hopper A chamber relative to the nozzle and the sample is provided with a sand hopper, the nozzle stretches into the sand hopper through a liquid lifting pipe, the interior of the storage hopper B chamber is provided with a pair of electrodes stretching into the interior, the electrode is connected with an external electric potential testing meter through a lead wire, and the other end of the pipeline is communicated with the storage hopper B chamber. The device provided in the invention can simulate the requirements of actual working conditions, which not only can implement the test study for the selection of wearable materials, but also can be suitable for the study of erosive wear mechanism.

Description

technical field [0001] The invention belongs to the technical field of wear testing, and relates to an erosion wear test device, in particular to a jet-type erosion wear test device. Background technique [0002] Wear is one of the main forms of failure of mechanical parts, and abrasive wear accounts for 50% of material wear. In abrasive wear, low stress erosion wear accounts for a certain proportion. Low-stress erosion wear widely exists in modern industrial production, such as the wear of flow-through parts, pipes and valves of mortar pumps in mines and power plants. During the working process, these wearable parts not only bear the erosion and cutting action of solid particles, but also bear the corrosive action of liquid medium and high temperature. The working environment is extremely harsh, so the service life of these wear-resistant parts is relatively low. To examine the erosion wear performance of materials, it is necessary to have test equipment with stable perfo...

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Problems solved by technology

The main advantage of the pipe flow test device is that it can better simulate the actual working conditions of pipeline erosion, but the whole system takes up a lot of space, the amount of solution required for the test is large, the cycle is long, and the cost of the whole set of equipment is high; The slurry of the wear tester will generate eddy current, which makes the erosion speed and impact angle uncontrollable, and is not suitable for the study of the mechanism and law of erosion wear; Precisely control the flow rate of the slurry flow, so it cannot simulate the actual working conditions well. To achieve a higher erosion rate, the pressure and power of the air source must be increased, which is difficult to manufacture, and it is not a circulation system, so the slurry supply is extremely inconvenient; Rotation The type erosion test device is one of the most researched in China at present, but it is difficult to effectively control the erosion angle due to the rotation of the sample.

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