Long-time continuous working creep and rupture tester

Abstract

The invention discloses a long-time continuous working creep and rupture tester. The tester comprises a long-life-design mechanical creep and rupture loading host, heating furnace fault replacement equipment and a double-wire heating furnace, wherein the double-function redundancy design is adopted in electric components of the long-life-design mechanical creep and rupture loading host, and long-time continuous working of a loading mechanism is ensured. The double-wire heating furnace comprises a test heating furnace body and a standby heating furnace body, the test heating furnace body is arranged on the long-life-design mechanical creep and rupture loading host, and the standby heating furnace body is arranged on the heating furnace fault replacement equipment. The long-time continuous working creep and rupture tester is characterized in that when tests on the creep and rupture tester are interrupted by faults of the electric components or the heating furnace bodies, on the premise of ensuring original temperature and loads, the fault components and the fault heating furnace bodies can be replaced fast, continuous working of the tester is ensured within the load and temperature fluctuation range required by standards, and therefore the working life of the creep and rupture tester is prolonged infinitely.

Description

technical field [0001] The invention belongs to the field of testing and analyzing the mechanical properties of metal materials, especially the long-time continuous creep durability performance of more than 100,000 hours, and specifically relates to a long-time continuous working creep durability testing machine. Background technique [0002] When a solid material is kept at a certain temperature and the stress remains constant, the phenomenon that the strain increases with time is called creep. The creep behavior of materials is the result of the joint action of time, stress, and temperature. As long as the acting time is long enough, creep can also occur when the stress is much smaller than the elastic limit. Similarly, the creep behavior of materials also occurs at low temperatures, but it becomes significant only when a certain temperature is reached, which is called the creep temperature of the material. The creep temperature of various metal materials is about 0.3Tm (...

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Problems solved by technology

[0011] 2) Cases where the predicted lifetime is lower than its actual operating time

During the working process of the testing machine for more than 100,000 hours, the most likely failure is the failure of the heating furnace, and the test error caused by the failure is irrecoverable. Therefore, if the heating furnace fails during the test of the creep durability testing machine, it can Complete the rapid replacement of the heating furnace within the allowable temperature deviation, which is the key to ensure the long-term continuous operation of the creep durability tester

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