Method for completing underwater cutting by aid of cutting system

A cutting system and underwater cutting technology, applied in welding/cutting media/materials, welding media, manufacturing tools, etc., can solve problems such as the inability to meet the cutting requirements, the cutting system cannot meet the underwater cutting requirements, and achieve a wide range of cutting objects, Low cost and high cutting efficiency

Active Publication Date: 2012-10-03
柳吉兰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Utility model patent CN201020597547.1 discloses a manual rapid cutting system, but the powder core components and component content of the manual rapid cutting material are only suitable for cutting in air, and the exothermic alloys CuO and Fe burn in oxygen The heat released is far from enough to support the continuous burning of cutting materials in water, so it cannot meet the requirements of underwater cutting, and the corresponding cutting system cannot meet the requirements of underwater cutting.

Method used

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  • Method for completing underwater cutting by aid of cutting system
  • Method for completing underwater cutting by aid of cutting system
  • Method for completing underwater cutting by aid of cutting system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Wherein, the iron powder particle size is -80 to 200 mesh, the CuO powder particle size is -80 to 200 mesh, and the CuO powder particle size is -80 to 200 mesh. 2 The particle size of the O powder is -80-200 mesh, and the particle size of the rare earth cerium is -300 mesh.

[0050] Then, it is manufactured by multi-roller continuous rolling and multi-channel continuous wire drawing and diameter reduction through a multifunctional powder core wire forming machine. After strip cutting, strip rolling, powder filling, sealing, wire drawing, straightening and shearing processes, it can be obtained Cut the wire; the wire preparation speed is about 40m / min, and the straightening speed is about 5m / min.

[0051] The steel pipe prepared by the forging process is used as the external cut pipe, and the inside and outside of the steel pipe are plated with a 0.1mm thick copper layer by electroplating process; the polyethylene tape is used to wrap the outside of the cut pipe as an in...

Embodiment 2

[0058] This embodiment is different from Example 1 in that: Al powder, Fe powder, Cu 2 O powder, CuO powder and rare earth cerium are mixed evenly according to the content ratio shown in Table 2, and 5 cutting wires are assembled in the inner cavity of the cutting pipe, of which 4 are steel sheaths and 1 is aluminum sheaths. The wire speed is about 120m / min and the straightening speed is about 22m / min.

[0059] Table 2

[0060] Powder core composition

% by weight

Cu 2 O powder

20％

CuO powder

5％

Aluminum powder

5％

rare earth cerium

7％

iron powder

margin

[0061] The underwater manual rapid cutting material prepared by the above method was tested on a 45# steel plate with a thickness of 20 mm at a water depth of 1 meter, and the cutting speed was 1.4 mm / s.

[0062] Wherein, the cutting pipe can also use the above-mentioned copper-iron-copper three-layer composite pipe, the cutting pipe wound b...

Embodiment 3

[0064] This embodiment is different from Example 1 in that: Al powder, Fe powder, Cu 2 O powder, CuO powder and rare earth cerium are mixed evenly according to the content ratio shown in Table 3. When there are 7 wires in the pipe, 1 to 3 wires can be covered with aluminum sheath and metal powder, and the rest are iron sheathed wires. For leather-wrapped metal powder, the wire preparation speed is about 80m / min, and the straightening speed is about 18m / min.

[0065] Wherein, the cutting pipe can also use the above-mentioned copper-iron-copper three-layer composite pipe, the cutting pipe wound by the composite metal strip can realize the flexible bending of the cutting pipe, and coil together like a soft rope.

[0066] The underwater manual rapid cutting material prepared by the above method was tested on a 45# steel plate with a thickness of 20 mm at a water depth of 1 meter, and the cutting speed was 2.5 mm / s.

[0067] The material of the present invention can be applied to ...

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Abstract

The invention relates to a method for completing underwater cutting by the aid of a cutting system. The method includes, step 1 connecting various components of the cutting system; step 2, respectively connecting two poles of an arc striking power source (6) to a cutting gun (12) and a copper starting weld tab (8) after the components are connected, and enabling a knife switch (5) to be in a switch-off state and the arc striking power source (6) and an industrial oxygen cylinder (9) to be always positioned above a water line; step 3, performing underwater cutting, enabling the cutting gun (12), a workpiece (10) and the copper starting weld tab (8) to be positioned below the water line, and clamping the cutting gun (12) for a underwater manual quick cutting material (11); and step 4, switching off the knife switch (5) after arc combustion is stable, and shifting an end of the cut material (11) to the workpiece (10) to cut the cut material (11). The method has the advantages of quick cutting speed, safety, convenience in carrying, simplicity in operation and capability of realizing underwater material cutting at a low cost, and is used for quickly cutting and detaching steel structures and reinforced concrete in underwater environments.

Description

technical field [0001] The invention belongs to the technical field of underwater manual rapid cutting of metal materials, and in particular relates to a method for completing underwater cutting by using a cutting system. Background technique [0002] The 21st century is the century of the ocean. With the development of the ocean, a large number of offshore buildings have been built. At the same time, a large number of underwater buildings such as abandoned docks and abandoned drilling platforms will need to be demolished to remove obstacles for navigation. The difficulty of breaking the barriers of these underwater buildings is that the underwater part of the structure can only be dismantled underwater, and these underwater buildings have reinforced concrete structures, which also increases the difficulty of dismantling. [0003] At present, the underwater cutting technology is mainly used to dismantle underwater metal structures and reinforced concrete structures. The comm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K28/00B23K35/22
Inventor 柳吉兰衣衍亮
Owner 柳吉兰
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