What kinds of cutting flames can a flame cutter produce? What are the characteristics?

When cutting, different cutting flames can be used to meet the requirements of different processes in the flame cutting, which can be achieved only by the proportion of the gas source. Then we need to understand the types of cutting flames, and their respective characteristics and production methods.

When using the flame cutting method, three different cutting flames of neutral flame, oxidizing flame and reducing flame can be obtained by adjusting the ratio of oxygen and acetylene. The most obvious feature of the neutral flame is that there is no free oxygen and activated carbon in its reduction zone, only carbon oxide and hydrogen produced by combustion. Observing the neutral flame, it is found that its flame core has a sharp outline, and its end is a uniform round and bright shell, compared to the darker shell. Speaking of its temperature, the temperature of the neutral flame reduction zone can reach about 3000 ° C, and the temperature of the outer flame can also be changed between 1200 ~ 2500 ° C.

The so-called oxidized flame is produced under the condition of oxygen process. Its flame center is conical, and the length is significantly shortened. In addition, the outline and brightness are not very clear. In particular, the oxygen content is relatively large, so the oxidizing flame is accompanied by a sound when burning, and its size is related to the pressure of oxygen. The temperature of the oxygen flame is generally relatively high, so it is easy to cause quality deterioration when cutting.

There is also a reducing flame, which is produced in the case of an excess of acetylene as opposed to an oxygen flame. The flame core has no obvious contour and has a green edge at the end. When there is too much acetylene, it will start to emit black smoke due to lack of oxygen during combustion.