Oxyhydrogen flame

An oxyhydrogen flame resulting from the combustion of hydrogen and oxygen. The greenish luminous flame is characterized by a very high temperature. Hydrogen gas burns in oxygen or air to form water. The released heat is by Julius Thomsen 34116 calories ( 142745 joules) per gram of hydrogen burned. The heat release is almost independent of the type and manner in which the combustion process takes place; the temperature of the flame, however, depends on the conditions under which the process takes place. She seems to have reached its maximum when pure " oxyhydrogen " ( a mixture of hydrogen and oxygen in the ratio 2:1 by volume ) is ignited. You decreases when detonating gas such as nitrogen is mixed with an excess of one of the two gases involved or with an inert gas ( inert gas), because distributed in these cases, the same amount of heat to a larger amount of matter. The temperature of the flame may reach 3000 degrees Celsius

Applications

• The oxyhydrogen flame is used in the industrial production of glass under the name " fire polishing ".
• In the gemstone processing under the name hydrogen-oxygen cutting torch.
• When welding
• When goldsmiths: the very finely tapered tip of the oxyhydrogen flame sometimes there is used to selectively limited finest gold work executing, such as repairs
• Melting and quartz glass

History

There were invented some models of oxyhydrogen lamps, for example, the Drummondsche light. Due to the explosive nature of the gas mixture all at that time devices, however, were more or less dangerous. An important application was the oxyhydrogen flame in the processing of platinum as this metal can be melted only in the oxyhydrogen flame or in an electric furnace; and also in the production of Drummond 's lights have been used for the illumination of theaters. These two applications were however supplanted by electric furnaces and electric light.