Скачать или смотреть Oxygen cutting of large parts – a common thermal cutting method

The video shows the process of cutting large parts with oxygen. Oxygen cutting is a common thermal cutting method, mainly used for cutting metals such as steel. Its core principle is to preheat the metal surface to its ignition point using a high-temperature gas flame, and then use a high-pressure oxygen stream to trigger a violent oxidation reaction in the metal, thus achieving cutting. First, a preheating flame heats the metal surface to its ignition point. Once the metal reaches its ignition point, high-pressure pure oxygen is injected into the cutting point, reacting violently with the high-temperature metal to generate liquid iron oxide slag. This chemical reaction releases a large amount of heat, keeping the metal at the cutting edge at a continuously high temperature. The momentum of the high-speed oxygen stream blows away the slag, forming a cut. As cutting progresses, the combustion and slag-blowing process proceeds layer by layer downwards until the workpiece is completely cut. The entire process is the result of a combination of chemical reaction and physical action. Oxygen purity and cutting oxygen pressure are crucial to cutting efficiency. Safety precautions must be taken during operation, such as preventing backfire and maintaining an appropriate distance between the cutting nozzle and the workpiece.