Load applying method of refractory material tester

Abstract

The invention discloses a load applying method of a refractory material tester. A movable pulley mechanism is used for applying constant stress; two groups of stress transferring mechanisms consisting of movable pulleys, fixed pulleys and flexible steel wire ropes respectively share the action of load application and balance adjustment, wherein the two movable pulleys form a movable pulley block, and a central shaft of crossed and branched chains is connected with a pressurizing rod; and one end of each of the two steel wire ropes is respectively connected with an applied load and a balance hammer. The method has the advantages that the load is applied by a movable pulley structure, so that the load and the mass for adjusting balance are greatly reduced, and the adjustment and the operation are more convenient; the test error is reduced; the service life of the steel wire ropes is correspondingly prolonged; the labor intensity of an operator is greatly reduced, and the safety of staffs and equipment is greatly improved; and the load application and the balance adjustment are respectively shared by the two flexible steel wire ropes, respective adjustment is realized and the operation is flexible.

Description

technical field [0001] The invention belongs to testing instruments, and relates to a testing instrument for pressure creep, load softening temperature, thermal expansion and other properties of refractory materials, in particular to a load applying method and mechanism of the testing instrument. Background technique [0002] Performance indicators such as pressure creep, load softening temperature, and thermal expansion of refractory materials are important performances. The test principle is that a sample of a specified size is subjected to constant load and heating rate, with the increase of temperature or at a certain temperature. Over time, the height of the sample will expand and compress. The temperature corresponding to the specified compression deformation of the sample is the load softening temperature; the percentage of the deformation of the sample and the original height of the sample at room temperature, and the difference between a certain time interval is the...

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Problems solved by technology

[0005] The above-mentioned first method has some shortcomings in the load-applying mechanism: 1) The diameter of the furnace body is about 500mm, and the mass is about 100Kg. It can be directly seen that only blind loading is used, and it is easy to deviate from the central axis of the sample. It is very difficult to adjust the loading along the central axis of the sample; 2) The huge furnace body is not only difficult to install, but also the lining material and heat generation Components may change in quality due to use

The weight and weight are about 100Kg in total, and they are hung on the wire rope, which is not only difficult to install, but also poses a safety hazard of falling

[0007] In the third and fourth methods above, a lever loading mechanism is used, and the direction of its applied pressure is easy to deviate from the axis of the sample, adding shear force to the sample and affecting the accuracy of the experimental results.

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