Dual-arm backward erosion corrosion testing device

Abstract

The invention discloses a dual-arm backward erosion corrosion testing device. The dual-arm backward erosion corrosion testing device comprises a bracket, a test groove, a computer feedback control system, an electrochemical workstation and two groups of transmission systems, wherein a heater is arranged in the test groove; each group of transmission systems comprises a frequency converter, a rotary table, a sample frame, a revolving shaft and a motor connected with the frequency converter; the motors are connected with upper ends of the revolving shafts; lower ends of the revolving shafts are vertically connected with the rotary tables; the sample frames are vertically connected with the revolving shafts; the computer feedback control system comprises a computer and a control cabinet; the heater and the two frequency converters are connected with the control cabinet; the control cabinet is used for controlling the two groups of transmission systems to drive the two revolving shafts to rotate reversely in order to drive the sample frames on the two rotary tables to rotate in the test groove; outer walls of the revolving shafts are provided with electrochemical assemblies which are connected with the electrochemical workstation, and rotation speed sensors which are connected with the computer. By adopting the dual-arm backward erosion corrosion testing device, dual-shaft reverse rotation is adopted, so that a more accurate relative motion speed can be obtained during rotation of a sample, the flow state stability of a medium can be improved, and an optimal erosion effect is achieved.

Description

technical field [0001] The invention relates to the technical field of erosion corrosion, in particular to a double-arm reverse erosion corrosion test device. Background technique [0002] Erosion corrosion is the phenomenon of metal damage or performance degradation caused by relative motion and corrosion between the metal surface and the corrosive medium. A kind of more harmful localized corrosion. Erosion corrosion is a process in which erosion and corrosion exist simultaneously in a solution, accompanied by complex interactions. Erosion is a mechanical process in which solid particles impact the surface of a material to cause removal or deformation of the material. Corrosion is caused by chemical or electrochemical reactions on the surface of the material. The process of material removal, erosion-corrosion encompasses everything from erosive dissolution to mechanical erosion, depending on the dominant mechanism. [0003] At present, there are mainly two methods to stud...

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Problems solved by technology

But at the same time, the numerical simulation method has some unavoidable problems. The main manifestations are that the setting of the boundary conditions of the numerical simulation needs to be based on certain assumptions, the calculation of corrosion and erosion in the numerical simulation must be based on a certain calculation model, and the time-accumulated The impact of wall corrosion product accumulation on fluid flow distribution cannot be evaluated. Therefore, although the numerical simulation method has been greatly developed, it is still impossible to obtain the most intuitive erosion corrosion parameters of the experimental research method.

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