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Mine abrasive water jet cutting method and device

A technology of abrasive water jet and cutting method, applied in abrasives, grinding/polishing equipment, metal processing equipment, etc., to achieve the effects of improved adaptability, improved effect, and reduced working pressure

Inactive Publication Date: 2009-09-23
CHINA UNIV OF MINING & TECH (BEIJING)
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In practical applications, the effect is obvious when cutting some materials with loose, soft or large gaps, but it is powerless for relatively hard rocks or steel, especially in mines under complex environmental conditions, how to use cold cutting methods, Design a kind of new cutting method, improve cutting effect and just become the problem to be solved in the present invention

Method used

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  • Mine abrasive water jet cutting method and device
  • Mine abrasive water jet cutting method and device

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Embodiment Construction

[0019] In the mine abrasive water jet cutting method described in the present invention, firstly, 80-mesh garnet is selected as the abrasive material, and the abrasive material itself is hard; then, the abrasive material and part of the high-pressure water are uniformly mixed in the container in the previous mixing method to form a suspension, Finally, the suspension is sent out from the container and mixed with the high-pressure water for cutting, and the high-pressure water for cutting and the suspension are ejected from the nozzle together to form a flow of abrasive particles with a very high speed-abrasive jet. The high-frequency impact and erosion effect can complete the cutting work on the surface to be cut. Among them, the pressure of the high-pressure water is 40MPa, the diameter of the nozzle is 0.8mm, and the amount of abrasive added generally does not exceed 20% of the capacity of the container. Of course, the abrasive can also be garnet between 60-80 mesh, and the ...

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Abstract

The invention discloses a mine abrasive water jet cutting method and a device. The method comprises the steps of mixing the abrasive with partial high-pressure water in a forward mixing manner in a high-pressure abrasive tank to form uniform suspension, and then mixing the suspension with cutting high-pressure water in a mixing chamber, and jetting the mixture from the spout of a spray pistol in an accelerative manner to form abrasive particle flow-abrasive jet to cut the object to be cut at an extremely high speed. The abrasive particle of the forward mixing manner has long acceleration time, obtains huge energy, and has good cutting effect. The entire device has quick cutting speed without sparkle in the cutting process, does not cause gas explosion, has low cost, and is free from pollution and extremely suitably used for cutting in complex environment in mine.

Description

technical field [0001] The invention belongs to the technical field of coal mines, in particular to a mining abrasive water jet cutting method and device. Background technique [0002] In the coal mining industry, rocks and bolts will be cut in roadway mining and coal mining roadway support. For example, in the excavation of underground caverns, it is necessary to take rock samples or cores from geological bodies in a certain area for geological and mechanical testing and analysis without damaging the surrounding rock of the cavern. , explosive and dangerous gas, and the space inside the cave is narrow and the cutting conditions are complicated. It cannot be cut by mechanical cutting methods that are prone to sparks such as electric welding. In order to meet the needs of underground production, workers have to transport materials to the ground for cutting. On the one hand, it affects the continuity of underground work, and on the other hand, it will consume a lot of time an...

Claims

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Application Information

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IPC IPC(8): B24C1/00B24C11/00B24C5/00
Inventor 聂百胜何学秋
Owner CHINA UNIV OF MINING & TECH (BEIJING)
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