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热喷枪工作原理

1950
热切割枪在机械工程应用中切割钢筋混凝土。

(图片仅供参考)

A thermal lance, or thermic lance, is a tool that cuts materials using the intense heat from the oxidation of iron. It consists of a steel tube packed with steel rods. Pressurized oxygen is fed through the tube, and the tip is ignited. The iron in the lance acts as fuel, burning in the oxygen stream to create a 高速, high-temperature jet.

The fundamental principle of a thermal lance is the rapid and highly exothermic oxidation of iron in a pure oxygen environment. The device is deceptively simple in its construction, comprising an outer steel pipe filled with smaller steel rods or a mix of steel and aluminum/magnesium wires. This packing increases the surface area of the fuel (the iron) exposed to the oxygen flow, promoting a more intense and sustained reaction. To initiate the process, the tip of the lance must be heated to iron’s ignition temperature, approximately 900 °C, typically using an oxy-acetylene torch. Once ignited, a self-sustaining reaction begins. The pressurized oxygen, usually at 4 to 10 bar (60 to 150 psi), flows through the pipe, reacting with the hot iron. This reaction, [latex]4Fe + 3O_2 \rightarrow 2Fe_2O_3[/latex], releases a tremendous amount of energy, raising the temperature at the tip to between 3,500 °C and 4,500 °C. This temperature is well above the melting point of most materials, including steel, rock, and concrete. The kinetic energy of the high-pressure oxygen jet helps to physically blow away the molten material and slag, creating the cut or hole. The lance itself is consumed during this process, with burn rates varying depending on the lance diameter and oxygen pressure.

UNESCO Nomenclature: 3305
– Mechanical engineering

类型

Physical Device

中断

重大的

用法

广泛使用

前体

  • 卡尔·威廉·舍勒和约瑟夫·普里斯特利发现氧气
  • 开发了贝塞麦炼钢法,利用氧气去除杂质
  • 氧乙炔焊接和切割的发明
  • 了解放热化学反应和燃烧
  • 无缝钢管制造的进步

应用程序

  • 钢筋混凝土结构拆除
  • 切割大型金属铸件或冻结的金属溢出物
  • 拆除重型机械中卡住的销钉
  • 船舶和潜艇退役
  • 熔炉和冶炼厂维护

专利:

NA

潜在创新理念

  • 用于危险环境中机器人修复的微型喷枪
  • 用于精确工业切割的自动喷枪系统
  • 具有特殊燃料棒成分的喷枪,用于切割特殊合金
  • 用于打捞和海上平台退役的水下热枪型号
  • 基于长矛的小行星采矿和资源开采系统
  • 用于突破加固结构的紧急救援工具
  • 采用热喷枪原理的地热钻头
  • 采用喷枪技术的废弃物玻璃化系统
  • 用于清除连铸生产线堵塞物的铸造工具
  • 用于创作大型作品的艺术金属雕刻工具
Related to: thermal lance, thermic lance, exothermic reaction, oxidation, cutting tool, demolition, steel cutting, oxygen lance, burning bar, iron oxidation.

历史背景

热喷枪工作原理

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(如果日期未知或不相关,例如“流体力学”,则提供其显著出现的近似估计)

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