Welding is a chemical welding method. Dabbing Unicorn welding shirt. That uses the flame retardant heat of oxygen in the gas to melt the welded metal and the additional welding rod that forms the weld. The gas-welding method is commonly used to weld thin metal plates and some colored alloys. Types of gases There are usually two types of gases: oxygen to maintain combustion and combustion gases such as hydrogen (H2), acetylene (C2H2), coal gas, gasoline vapor, benzene. The gas used for welding is acetylene. This gas, when burned in oxygen, emits a minimum heat of 11470 cal / m3 and brings the temperature to a maximum of 3150oC. Hydrogen is a colorless, odorless gas. Hydrogen can prepared by electrolysis or some other method.
Oxygen and hydrogen sold in the form of a container. Usually at a pressure of 150 at a standard capacity of 40 liters. Hydrogen gas welding was applied relatively early. But because of its relatively low heat generation and low temperature. It only used for welding nonferrous metals such as aluminum, lead, and solder steel plates. Or used to heat the material when cutting with oxygen. In addition, because of the low temperature, welding of thick steel plates will require the extraction of hot melting time. Dabbing Unicorn welding shirt. Which will lead to very high heat costs, which will result in high costs? As a result, acetone gas used more in gas welding, and hydrogen is less. Acetylene (also known as calcium carbide) is a slightly lighter gas than oxygen and hydrogen, colorless and slightly odorless, burns at 420 degrees Celsius.
