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An oxygen-free underwater cutting electrode and underwater steel cutting method

An underwater cutting and electrode technology, applied in welding/cutting medium/material, arc welding equipment, welding equipment, etc., to achieve the effects of good portability, improved energy, and high cutting speed

Active Publication Date: 2020-03-31
OCEANOGRAPHIC INSTR RES INST SHANDONG ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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  • An oxygen-free underwater cutting electrode and underwater steel cutting method
  • An oxygen-free underwater cutting electrode and underwater steel cutting method

Examples

Experimental program
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Effect test

Embodiment 1

[0028] Such as figure 1 and 2 As shown, a pure aluminum electrode core with a diameter of 4.0 mm is selected as the metal core 43 of the cutting electrode, and its length is 400 mm. Paraffin wax is used as the material of the waterproof layer 41, and the paraffin wax is applied to the outside of the coating 42. The formula of the coating 42 is : Aluminum powder 5%, hematite 15%, marble 32%, potassium carbonate 4%, potassium permanganate 4%, calcium peroxide 8%, cerium oxide 2%, iron powder 3%, made of cutting electrode 4. Under the condition of cutting current 150-180A, the 8mm thick Q235 steel plate can be cut underwater, and the cutting edge with good quality can be obtained, and the cutting edge is easy to remove slag. Specific steps are as follows:

[0029] (1) Connect the components of the underwater anaerobic cutting system. The cutting system includes: constant current welding power supply 1, cable 2, underwater welding handle 3, cutting electrode 4 and base material ...

Embodiment 2

[0034] The coating formula of the cutting electrode is: aluminum powder 8%, hematite 24%, marble 40%, potassium carbonate 5%, potassium permanganate 4%, calcium peroxide 8%, cerium oxide 3%, iron powder 8% , the rest of the components are the same as in Example 1, and the underwater anaerobic cutting method is the same as in Example 1, and will not be repeated here.

Embodiment 3

[0036] The coating formula of the cutting electrode is: aluminum powder 12%, hematite 36%, marble 40%, potassium carbonate 5%, potassium permanganate 5%, calcium peroxide 10%, cerium oxide 4%, iron powder 11% , the rest of the components are the same as in Example 1, and the underwater anaerobic cutting method is the same as in Example 1, and will not be repeated here.

[0037] In summary, the cutting process of the present invention does not need to provide oxygen, and the cutting electrode comes with an oxygen generator and a gas-generating agent, which can generate oxygen and protective gas required for the cutting process through chemical reactions, which has high safety; during the construction process, constant current welding The power source is above the water surface, and the cutting electrode is delivered only by divers’ manual operation. The operator only needs to carry the underwater welding handle and cutting electrode to work underwater, and one person can carry i...

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Abstract

The invention discloses an anaerobic underwater cutting electrode. The anaerobic underwater cutting electrode comprises an outer waterproof layer, a covering and a metal core. The metal core is of analuminum material, and the waterproof layer is formed in a manner that a waterproof material is coated to the exterior of the covering. The covering comprises the following components, by mass percent, 20%-50% of a thermite, 35%-50% of a gas-forming agent, 10%-15% of an oxygen generation agent, 2%-4% of an arc stabilizer and 3%-11% of iron powder. The anaerobic underwater cutting electrode is usedfor conducting anaerobic underwater steel cutting, oxygen does not need to be provided in the cutting process, in the construction process, a constant-current welding power source is located above the water face, cutting electrode feeding is completed only through manual operation of a diver, an operator only needs to carry an underwater welding rod holder and the cutting electrode to work underwater, one person can carry the underwater welding rod holder and the cutting electrode, it does not need to carry a wire feeding device and other equipment with a relatively large mass to carry out diving operation, and safety and universality are high.

Description

technical field [0001] The invention belongs to the technical field of metal material welding and cutting, and in particular relates to a cutting electrode for underwater wet arc cutting, in particular to an oxygen-free underwater cutting electrode and an underwater steel cutting method without additional oxygen supply, resorting to The underwater electrode arc welding welding equipment can successfully implement the underwater cutting process. Background technique [0002] Underwater cutting technology was first used to salvage shipwreck engineering, and gradually developed. Especially in recent years, with the development of marine development, in order to adapt to the development of underwater engineering construction and dismantling, from the perspective of improving underwater cutting ability, speed and quality, and in order to meet the needs of special structures and special environments, successive developments have been made. Some new underwater cutting methods and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K9/013B23K35/02B23K35/22
CPCB23K9/013B23K35/0216B23K35/228
Inventor 杜永鹏杨振林李海新殷子强张婧韩焱飞袁新
Owner OCEANOGRAPHIC INSTR RES INST SHANDONG ACAD OF SCI
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