System and method of rapidly manufacturing coal-like rock similar material test piece

Abstract

The invention discloses a system and a method of rapidly manufacturing a coal-like rock similar material test piece. The system comprises a quantitative water injection agitating machine, a high-frequency impact tester, an automatic strip machine, a constant temperature moisturizing cabinet, and a base, wherein the quantitative water injection agitating machine is arranged at the left of the high-frequency impact tester and is used for uniformly mixing raw materials of coal-like rock similar materials, the high-frequency impact tester is arranged at the left of the automatic strip machine andis used for pressing the raw materials of the coal-like rock similar materials mixed uniformly by the quantitative water injection agitating machine into a test piece through a mold, the automatic strip machine is arranged at the left of the constant temperature moisturizing cabinet and is used for ejecting the test piece pressed in the mold by the high-frequency impact tester out of the mold. Thesystem agitates, shapes, presses the test piece and demolds efficiently, in addition, the system can maintain the test piece in later period, thereby providing a good condition for tests of the testpiece.

Description

Technical field [0001] The invention belongs to the technical field of making test pieces of coal-like materials, and in particular relates to a method and system for quickly batch-making test pieces of coal-like materials. Background technique [0002] The preparation process of coal-like material specimens is divided into: material mixing and mixing, molding through a mold, demolding, and static curing. [0003] First of all, for the mixing and mixing of materials, manual mixing is currently used, which is time-consuming and laborious and has poor mixing uniformity. [0004] Secondly, for molding by mold compression, manual tamping or hydraulic press is currently used. The specific implementation process of the manual tamping method is as follows: firstly, load similar materials with good proportions into the mold; then use a hammer to manually tamping; the speed is slow, time-consuming and laborious, and the tamping strength of the test piece is uneven, and the compaction of the ...

AI Technical Summary

Problems solved by technology

For manual demoulding, the strength of each knock is different. Excessive force will cause tiny cracks inside the test piece during the demoulding process, which will affect the reliability of subsequent tests. If the force is too small, the test piece will not easily come off

In addition, the model test requires a large number of test pieces, and the artificial method takes a long time to make test pieces, which is time-consuming and laborious.

At the same time, for the production of molded coal test pieces, due to the finer particles of coal powder during the pressing process, the coal powder particles are in close contact with the inner surface of the mold, so that the test piece is easily broken from the middle when taking the mold during the demoulding process. Greatly affects the success rate of test piece production

[0006] Finally, for static curing, the current test personnel do not pay much attention to the maintenance of the specimens. The fabricated specimens are generally directly exposed to the air, and uncontrollable factors such as indoor and outdoor temperature and humidity have a greater impact on the specimens.

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