High-temperature hardness meter for continuous high-temperature hardness test

Abstract

The invention discloses a high-temperature hardness tester for continuous high-temperature hardness test. The high-temperature hardness tester comprises a lifting table, and a high-temperature furnace is fixedly mounted above the lifting table. A moving table is fixedly mounted in the high-temperature furnace. A connecting plate is fixedly mounted outside the moving table. The side, far away from the moving table, of the connecting plate is connected with a water circulation assembly. In order to ensure the leakproofness of a high-temperature cavity, a labyrinth seal is adopted between an upper furnace cover and a lower furnace cover. The upper furnace cover is matched with the lower furnace cover, and a very small gap is reserved between an annular boss and a groove, so that a labyrinth seal is formed. A trapezoidal hole is formed in the upper furnace cover, and high-temperature-resistant glass is placed in the trapezoidal hole, so that a sample is convenient to observe. The lower furnace cover, a heat insulation layer and a ceramic heat insulation layer are each provided with an arc-shaped groove with the radian of 140 degrees, so that after the indentation test is finished, when the upper furnace cover is rotated to 140 degrees, the high-temperature-resistant glass is just located over the sample, then an objective lens is rotated to the position, and the sample is observed through the high-temperature-resistant glass sheet.

Description

technical field [0001] The invention specifically relates to the technical field of high-temperature hardness testing, in particular to a high-temperature hardness tester for multi-point continuous high-temperature hardness testing. Background technique [0002] Hardness test is one of the important indicators to evaluate the mechanical properties of materials. High-temperature hardness can characterize the change law of mechanical properties of materials at different temperatures. High-temperature hardness testing requires not only a high-temperature environment, but also a vacuum environment to prevent high-temperature oxidation of the sample, and to achieve multi-point hardness testing of the same sample. [0003] However, the existing high-temperature chamber for continuous multi-point high-temperature hardness testing cannot solve the multi-point hardness testing under high-temperature environment, and the sealing cannot be directly realized in the high-temperature fur...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a high-temperature hardness tester for continuous high-temperature hardness testing, so as to solve the problem of multi-point hardness testing and high-temperature furnace airtightness in the high-temperature environment that cannot be solved at present in the above-mentioned background technology

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