First, the definition
A mechanical device that uses concentrated heat to melt and separate materials. According to the type of heat energy used for thermal cutting, it can be divided into gas cutting machine, arc cutting machine, plasma arc cutting machine and laser cutting machine. The hot cutting machine is indispensable for the metal material cutting, component processing, disintegration of waste materials, installation and dismantling in the industrial sector.
Second, the basic principles
In 1876, the Frenchman A.L.de Lavoisier proposed the basic principle of gas cutting. In 1887, the American Fletcher test successfully cut steel with oxyacetylene flame. In 1901, the Belgian Joelland designed and manufactured a manual gas cutting torch to make gas cutting practical. In the 1940s, due to the emergence of semi-automatic and automatic gas cutting equipment, the working conditions of gas cutting were improved. In the 1950s, arc and plasma arc cutting occurred, and later developed a more automated type of precision thermal cutting equipment such as profiling, photoelectric tracking, and numerical control. In the 1960s, laser cutting technology was developed.
The various heat source equipment used in the hot cutting machine is basically the same as the heat source equipment used for fusion welding, and the hot cutting machine is often used for the welding of the weldment before the welding and the joint beveling, which is closely related to the welding, so the hot cutting is often merged. In the field of welding technology.