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Method for preparing manual fast cutting material

A rapid cutting and manual technology, applied in the direction of welding/cutting media/materials, metal processing equipment, manufacturing tools, etc., can solve the problems of reducing cutting efficiency, paralyzing equipment and power facilities, delaying rescue time, etc., to achieve rapid cutting and cracking, Wide range of cutting objects and high cutting efficiency

Active Publication Date: 2012-08-15
衣衍亮
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is necessary to quickly and timely rescue the crushed people within the golden period of 72 hours. However, the road interruption caused by the earthquake made it impossible for large-scale equipment to reach the earthquake site in time to carry out disaster relief work
At the same time, some equipment that requires live work cannot be rescued due to the paralysis of power facilities
At present, the main method of disaster relief is still manual disaster relief. The tools used by disaster relief personnel are mainly picks, crowbars, and shovels. However, buildings are mainly constructed of reinforced concrete. Although the concrete has broken during the earthquake, it is connected by steel bars. brought great difficulties to the rescue work
At present, fire officers and soldiers mainly use steel bar shears and oxy-acetylene flame cutting methods to cut steel bars, but the efficiency of these two methods is very low, and they can only cut metal. Sometimes it is difficult to cut steel bars covered with concrete There is nothing that can be done. Rescuers need to break open the concrete outside to leak out the steel bars. Only then can steel bar shears and oxy-acetylene flames be used to cut the steel bars. The situation further reduces the cutting efficiency and delays the rescue time

Method used

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  • Method for preparing manual fast cutting material
  • Method for preparing manual fast cutting material
  • Method for preparing manual fast cutting material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Iron powder, CuO powder and rare earth alloy powder are mixed uniformly by the content ratio as shown in table 1 earlier with mixing agitator, and prepare low-carbon steel 08F steel strip, described low-carbon steel 08F steel strip chemical composition is: In weight percentage, C0.05%~0.11%, Si≤0.03%, Mn 0.25%~0.50%, P≤0.035%, S≤0.035%, Ni≤0.25%, Cr≤0.10%, the rest is iron and non Avoid impurities; then through the multi-functional powder core wire forming machine, it is manufactured by multi-roll continuous rolling and multi-channel continuous wire drawing and diameter reduction, after strip cutting, strip rolling, powder filling, sealing, wire drawing, straightening and shearing The process is to cut the wire; the wire preparation speed is about 10m / min, and the straightening speed is about 5m / min.

[0038] The steel pipe prepared by the forging process is used as the external cutting pipe, and the inside and outside of the steel pipe are plated with a 0.1mm thick cop...

Embodiment 2

[0044] The difference between this embodiment and Example 1 is that iron powder, CuO powder and rare earth alloy powder are uniformly mixed according to the content ratio shown in Table 2, and five cutting wires are assembled in the inner cavity of the cutting pipe to prepare wire The material speed is about 30m / min, and the straightening speed is about 22m / min.

[0045] Table 2

[0046] Powder core composition % by weight CuO powder 5％ rare earth cerium 1％ iron powder margin

[0047] The manual quick-cutting material prepared by the above-mentioned method was used to conduct a cutting test on a 45# steel plate with a thickness of 20mm, and the cutting speed was 5.9mm / s.

Embodiment 3

[0049] The difference between this embodiment and Example 1 is that iron powder, CuO powder and rare earth alloy powder are uniformly mixed according to the content ratio shown in Table 3, and seven cutting wires are assembled in the inner cavity of the cutting pipe to prepare wire The material speed is about 15m / min, and the straightening speed is about 18m / min.

[0050] table 3

[0051] Powder core composition % by weight CuO powder 8％ rare earth cerium 1.5％ iron powder margin

[0052] The manual rapid cutting material prepared by the above method was used for cutting test on 45# steel plate with a thickness of 20mm, and the cutting speed was 8.27mm / s.

[0053] The beneficial effects brought by the manual rapid cutting material prepared by the preparation method provided by the invention are as follows:

[0054] 1) Portability, using carbon fiber oxygen cylinders for fire-fighting, the cutting system and cutting materials used are li...

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Abstract

The invention discloses a method for preparing a manual fast cutting material, which comprises the following steps of: first uniformly mixing 2 to 8 weight percent of CuO powder, 0.4 to 2 weight percent of rare earth cerium and the balance of iron powder by using a material mixing stirrer, and preparing a low-carbon steel 08F steel strip; then performing manufacturing by adopting multi-roller continuous rolling and multipass continuous wire drawing and diameter reduction methods by using a multifunctional powder-cored wire molder, and performing strip cutting, strip rolling, powder filling, sealing, wire drawing, straightening and cutting processes to obtain cut wires; manufacturing a steel pipe by a forging and stamping process as an external cutting pipe, and plating a copper-plated layer with the thickness of 0.1mm on the inner side and outer side of the steel pipe by adopting an electroplating process respectively; and assembling a plurality of cut wires into a cavity of the cutting pipe to form the manual fast cutting material. The material is used for fast cutting and cracking reinforced concrete without any cutting fuel gas and cutting power supply in earthquake relief processes, has high cutting efficiency and low cost, and is convenient and safe to carry and simple to operate.

Description

technical field [0001] The invention belongs to the technical field of metal material cutting for manual rapid cutting, and relates to a preparation method of manual rapid cutting materials. Background technique [0002] my country is an earthquake-prone country. The earthquake caused road interruptions, power facilities to be paralyzed, and houses to collapse. A large number of people were crushed under houses and rubble. It is necessary to quickly and timely rescue the crushed people within the golden period of 72 hours. However, the road interruption caused by the earthquake made it impossible for large-scale equipment to reach the earthquake site in time to carry out disaster relief work. At the same time, some equipment that requires live work cannot be rescued due to the paralysis of power facilities. At present, the main method of disaster relief is still manual disaster relief. The tools used by disaster relief personnel are mainly picks, crowbars, and shovels. Howe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P15/00B23K35/00
Inventor 衣衍亮孟欣
Owner 衣衍亮
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