Fatigue test sample clamp with high temperature resistance, high pressure resistance and aqueous corrosion resistance and usage method thereof

Abstract

The invention belongs to the material test technical field, to be more exactly, relates to a fatigue test sample clamp with high temperature resistance, high pressure resistance and aqueous corrosion resistance and an usage method thereof, which solves the problems of high temperature irresistance, high pressure irresistance, aqueous corrosion, large screw thread slit and poor centering in the current sample clamp. The clamp is provided with a column, a platform, an upper press cap, a lower press cap and a conversion adapter; the lower part of the column of the clamp is fixed on a cover of anautoclave, the upper part of the column of the clamp is fixed on the platform, and respectively and tightly pressed by lock nuts, the lower part of the conversion adapter is connected with a stretching shaft of a fatigue machine, through elevating the stretching shaft, an upper convex plate and a lower convex plate of the test sample are respectively placed in a platform groove and a conversion adapter groove, two dimidiate semirings are pressed on upper convex plate and the lower convex plate of the test sample, the upper press cap and the lower press cap are sleeved, the press cap bolts arescrewed for fixing two ends. The fatigue test sample clamp can be used in the autoclave for carrying out various fatigue tests (stress-stress, stress-tension, tension-tension and the like) under the high temperature high pressure solution environment, and has the advantages of simple structure and low cost.

Description

technical field [0001] The invention belongs to the technical field of material experiments, and more precisely relates to a high-temperature, high-pressure water corrosion fatigue test sample fixture and a use method. Background technique [0002] In the petroleum, chemical, electric power and other industries where the service environment is dominated by high-temperature and high-pressure solutions, serious corrosion problems often occur in equipment, such as stress corrosion and corrosion fatigue. Major accidents have caused huge economic and personnel losses. In order to find out the cause of the accident and avoid the recurrence of the accident, it is necessary to study the corrosion mechanism of equipment materials in the service environment. It is an effective means to study the corrosion failure mechanism of these equipment materials by simulating the high temperature and high pressure environment in the laboratory, and to carry out such research must first solve the...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a sample fixture that can test the corrosion fatigue performance of materials in a high-temperature and high-pressure water environment and its use method, which solves the problem that the existing fatigue machine sample fixture cannot be used in an autoclave

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