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Pressure Vessels Are Widely Used In Chemical Industry Production Department
Oct 09, 2017


The pressure vessel is generally composed of a cylinder body (also known as a shell), the head (also known as the end cover), flange, sealing elements, openings and nozzles (manhole, hand hole, mirror hole, material import and export takeover, liquid level meter, flowmeter, temperature control, safety valve, etc.) and support and other various components.

Pressure vessels are not only widely used in chemistry, petrochemical, pharmaceutical, metallurgy, machinery, mining, electric power, aerospace, transportation and other industrial production sectors, in agriculture, civil and military departments are also quite common, especially in the petrochemical industry is the most widely used, petrochemical enterprises in the tower, kettle, trough, Pressure Vessel and Pressure Pipe Component Tank no one is not a receptacle or as a shell of equipment, and most of it is operating under pressure temperature, such as an annual output of 300,000 tons of ethylene equipment, about 793 units, Pressure Vessel and Pressure Pipe Component of which 281 units of pressure vessels, accounted for 35.4%. The steam boiler is also a pressure vessel, but it is a special pressurized vessel heated by direct flame, as for civilian or factory liquefied petroleum gas cylinders, it is more visible everywhere.

Manufacturing process of pressure vessel

1, pressure vessel manufacturing process can be divided into: raw material acceptance process, marking process, cutting process, derusting process, machining (including planing edge, etc.) process, rolling process, group on the process, welding process (product welding test board), nondestructive testing procedures, Pressure Vessel and Pressure Pipe Component open-hole marking process, the total inspection process, heat treatment procedures, pressure test procedures, Anti-Corrosion process.

2, different welding methods have different welding process. Welding process is mainly based on the material, brand, chemical composition, welding structure type, welding performance requirements to determine. First of all to determine the welding methods, such as hand arc welding, submerged arc welding, Pressure Vessel and Pressure Pipe Component tungsten argon arc welding, melting gas shielded welding and so on, welding methods are very many kinds, can only be selected according to the specific circumstances. Pressure Vessel and Pressure Pipe Component After the welding method is determined, the parameters of welding process are different, such as hand arc welding include: electrode type (or grade), diameter, current, voltage, type of welding power, polarity connection, welding layer number, road number, inspection method and so on.