Introduction of oxygen welding for cutting metal

Gas cutting oxygen plays a role in combustion, increase the melting temperature metal fusion hyperbaric oxygen metal liquid blown out of shape, cut seam welding metal weld to avoid oxidation of oxygen weld.It belongs to the harmful element. The alloy element of welding material can reduce the weld performance.

Oxygen cutting referred to as gas cutting, it has the advantages of simple equipment, flexible and convenient, good quality, and so on, it is suitable for cutting the thickness of large, long size scrap, such as large scrap steel plate, steel casting, waste boiler, scrap structure frame.It can play a more flexible and convenient role in the disintegration of scrap cars and old ships. It is not limited by the narrow site or the size of objects, and can be used in any situation.In addition to the use of gas cutting processing steelmaking furnace charge, can also be used in the scrap steel cutting valuable plate, type, pipe and other materials for production use.Therefore, oxygen cutting is the main method of scrap iron and steel processing.

Ii. Process of oxygen welding and metal cutting oxygen cutting is a method to realize metal cutting by using the heat energy of gas flame to preheat the cutting place of the workpiece to the ignition point and then spew out a high-speed cutting oxygen stream.Gas cutting process has three stages:

1, the preheating

At the beginning of gas cutting, a gas flame (oxyacetylene or oxypropane flame) is used to preheat the workpiece to be cut to the combustion temperature -- ignition point of the metal material (about 1100-1150 for carbon steel).

Timg (1)

2, the combustion

Spewing a high speed cutting oxygen stream, so that the metal has reached the ignition point in the oxygen stream intense combustion, oxide.

3. The oxide generated by the combustion of slag metal is blown off by the oxygen flow, forming an incision, separating the metal and completing the cutting process.

Speaking of oxygen welding, we have provided installation for steel works, thermal gas mass flowmeter, one size fits all installation provided by the factory with pipe fittings and valves.For non-weldable pipes, the factory shall provide the pipe clamp.

For example, weldable piping.Weld the connector with the pipeline first, then install the valve, drill hole with special tools, and then install the instrument, as shown in the figure below.

When maintaining the instrument, remove the instrument and close the valve, without affecting the normal production.During installation, it should be noted that the "medium flow mark" identified on the instrument should be the same as the actual flow direction of the gas.

In the course of the afternoon the oxygen meter was successfully installed in the pipe.