Creep property testing device for heat-resistant steel micro sample for power station

Abstract

The invention discloses a creep property testing device for a heat-resistant steel micro sample for a power station, which is characterized in that a weight is placed on a supporting seat, the upper end of a punch rod is connected with the supporting seat, the lower end of the punch rod penetrates through an upper cross beam and is inserted into a quartz tube, the upper end of the quartz tube is fixed on the upper cross beam, and the lower end of the quartz tube is fixed on a lower cross beam; the open type tube furnace is sleeved on the outer side of the quartz tube, a clamp is arranged in the quartz tube and comprises an upper clamp and a lower clamp, a sample to be tested is clamped between the upper clamp and the lower clamp, and the lower end of the punch rod penetrates through the lower clamp and is in contact with the central position of the upper surface of the sample to be tested; the upper end of the quartz rod is in contact with the central position of the bottom of the sample to be tested, the lower end of the quartz rod penetrates through the lower clamp and then is matched with the displacement sensor, the displacement sensor is located on the supporting seat, and the output end of the displacement sensor is connected with the displacement recorder. The device can accurately measure the relationship between the deformation of the micro sample and the time, and has the characteristic of short test time consumption.

Description

technical field [0001] The invention belongs to the field of mechanical performance testing of metal materials, and relates to a creep performance testing device for heat-resistant steel micro-specimen used in power stations. Background technique [0002] Due to the particularity of my country's energy resources, thermal power generation is still the main way of supplying and storing power resources in my country. As my country's demand for electricity continues to increase, thermal power generation equipment continues to be optimized and improved, and ultra-supercritical thermal power generators have become the current preferred equipment. The operating temperature of ultra-supercritical thermal power units is higher than 600°C, and the internal steam pressure is relatively high. The service environment is harsh and the operating conditions are harsh. The material performance requirements for key components of the unit are high. [0003] Thermal power generation units work...

AI Technical Summary

Problems solved by technology

[0003] Thermal power generation units work under high temperature conditions for a long time, and the creep performance has become an important basis for measuring the life and operation of the unit. At present, the performance test of creep generally adopts the uniaxial creep tensile test method of standard creep specimens, but This method has problems such as large sample size, long test time, high cost, and high consumption. For the in-service unit, the preparation of standard creep samples needs to be cut and sampled directly on the equipment / components in service, which directly causes equipment damage. destructive damage and cannot be used, which is the biggest drawback of this method at present

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