High-temperature fatigue testing device under combined action of vanadium pentoxide corrosion and sulfuric acid corrosion

Abstract

The invention discloses a high-temperature fatigue testing device under the combined action of vanadium pentoxide corrosion and sulfuric acid corrosion. The device comprises a heating cabin (1), the heating cabin (1) consists of two parts which are hinged with each other; through holes are formed in a top plate and a bottom plate of the heating cabin (1); an electric heating device (2) is arrangedon the inner wall of the heating cabin (1), and a tray (3) is arranged at the bottom; the testing device further comprises a sample clamping mechanism (4); the sample clamping mechanism (4) is composed of two clamping assemblies which are longitudinally distributed; the clamping assembly comprises a hydraulic cylinder (5); a clamping jaw (6) is connected to the working end of the hydraulic cylinder (5), a connecting piece (7) is clamped in the clamping jaw (6), one end of the connecting piece (7) is matched with the clamping jaw (6), a connecting rod (8) is connected to the other end of the connecting piece (7) in a sleeved mode, and meanwhile a locking jackscrew (9) matched with the connecting rod (8) is in threaded connection.

Description

technical field [0001] The invention relates to a metal fatigue testing device, in particular to a high-temperature fatigue testing device in which vanadium pentoxide corrosion and sulfuric acid corrosion act together. Background technique [0002] The failure of diesel engine combustion chamber components will directly affect the service life of the diesel engine. If the specific cause of the failure can be found and targeted improvements can be made, the service life of the diesel engine can be greatly improved, and the use cost of the diesel engine can be reduced. However, some parts in the combustion chamber of a diesel engine not only need to undergo repeated and multiple stretching operations, but more importantly, they will be in a high-temperature environment and a corrosive environment for a long time. The combined effect of sulfuric acid produced by heavy oil; therefore, if only the conventional tensile fatigue test device is used to test the workpiece, more accura...

AI Technical Summary

Problems solved by technology

However, some parts in the combustion chamber of a diesel engine not only need to undergo repeated and multiple stretching operations, but more importantly, they will be in a high-temperature environment and a corrosive environment for a long time. The combined effect of sulfuric acid produced by heavy oil; therefore, if only the conventional tensile fatigue test device is used to test the workpiece, more accurate data cannot be obtained, so a method or device that can solve the above problems is now needed

Images