Heating furnace for creep and rupture life tester

Abstract

The invention discloses a heating furnace for a creep and rupture life tester, which comprises an operating handle, a fixing piece, an outer furnace shell, an inner furnace shell, a heat-preservation layer and a fire-retarding layer, wherein the heat-preservation layer adopts aluminosilicate fiber cotton; a heat-resistance layer in the core part of the heating furnace has a tubular structure; the inside diameter of the tubular heat-resistance layer ranges from 100 to 110 millimeters and is divided into upper, middle and lower three layers; each layer of the heat-resistance layer is formed by joining two high-alumina bricks with a half-'tubular' structure and the layers of the heat-resistance layer have a consistent coaxiality with the axis of the furnace shells; the inner wall of each layer of the heat-resistance layer is spirally and uniformly distributed with 16 circles of furnace wires; the diameter of the furnace wires is 5 to 6 millimeters; the screw pitch is 10 millimeters; the spiral height is 160 millimeters; and the furnace wires on the inner wall of each layer of the heat-resistance layer are led out of the furnace shells respectively to be connected with a power supply. Compared with the prior art, the heating furnace has the advantages of safety, economy and practicality, can be used for heating in creep and rupture life tests of various metal materials at 100 to 1,200 DEG C and can truly reflect the homoiothermy of a whole test process.

Description

technical field [0001] The invention relates to a heating furnace for a creep and enduring strength testing machine, which belongs to the technical field of thermal processing. Background technique [0002] Creep and Endurance Strength Test is a high-temperature tensile test carried out under constant temperature and constant load. The heating furnace is a kind of heating equipment that must be used in the creep and durable strength mechanical performance test of metal materials. The мп-3г test machine heating furnace produced by the former Soviet Union, such as figure 1 As shown, the electric heating element is a furnace wire of φ1.5mm, which is spirally wound on the muffle cover in the form of a filament, as shown in figure 2 As shown, two sections of furnace wire are used for temperature control, and the soaking zone of the furnace is achieved through thermal balance. The soaking zone of the heating furnace is 150mm, and the inner diameter of the furnace is φ70mm. Bec...

AI Technical Summary

Problems solved by technology

With the development of material science, it can no longer meet the test requirements of large quantities of higher performance materials, especially the test requirements of materials with a test temperature above 1000 °C.

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