Tantalum clad pressure vessel is a closed vessel that can withstand pressure. Tantalum clad pressure vessel is widely used. It plays an important role in many departments such as industry, civil, military industry, and many fields of scientific research. Most of them are used in the inorganic chemical industry and petrochemical industry. The pressure vessels only used in the inorganic chemical industry account for about 50% of the total number of pressure vessels. In the leading cities of chemical and petrochemical industry, tantalum clad pressure vessel is mainly used for heat transfer, mass transfer, reaction, and other process processes, as well as the storage and transportation of pressurized gas or liquefied gas; It is also widely used in other industrial and civil fields. Let me introduce the features and applications of the tantalum-clad pressure vessel.

Here is the content list:

• Characteristics of tantalum clad pressure vessel

• Material of tantalum clad pressure vessel

• Process key points of tantalum clad pressure vessel

Characteristics of tantalum clad pressure vessel

The design of tantalum clad pressure vessel considers that tantalum cannot be directly welded with the steel base because the melting point of tantalum is quite different from that of steel. Before welding, the button layer on both sides of the groove shall be polished and removed. After the steel base is welded and polished flush, appropriate cushion strip materials shall be used to fill the vacant part. The cushion strip is mainly used for mechanical support, and its thickness shall be consistent with the button lining layer. At the same time, the design of tantalum clad pressure vessel also considers the leakage detection system to protect the inert gas channel on the back of the welded joint during welding, to inspect the welding quality of the lined welded joint, and discharge the gas and leaked medium under the lining layer during use to prevent shell corrosion.

Material of tantalum clad pressure vessel

Tantalum clad pressure vessel's thin tantalum plate and tantalum heat exchange tube are highly international commodities. Because the thermal conductivity of tantalum metal is much smaller than that of carbon material and steel, the cooling speed of weld and heat-affected zone during welding is slow. To achieve the purpose of protection, there is a protective cover in the welding process of tantalum metal, in which argon is introduced to protect the weld and heat-affected zone during cooling. Because tantalum metal and steel cannot be welded, the surface of lining parts and lined workpieces can also be connected by tantalum screws.

Process key points of tantalum clad pressure vessel

The forming method of composite plate head of tantalum clad pressure vessel needs to be determined according to tantalum material and substrate. When heated to more than 300 ℃, hydrogen, oxygen, nitrogen and other gases in the air will react violently with tantalum to form brittle compounds, so it is a long Time and high-temperature heating will have a very adverse impact on the strength of tantalum lining. If the wall thickness of the tantalum-clad pressure vessel is large and the pressing temperature is too low, it will lead to forming difficulties. Therefore, it is very important to select the appropriate heating temperature and holding time. Before stamping, the abrasives shall be cleaned first to avoid mechanical damage and pollution to the base material surface. In the process of head pressing, a special high-temperature anti-oxidation coating can be applied to isolate the air and effectively avoid high-temperature oxidation of tantalum and substrate.

Nanjing Suntech Metal Equipment Co., Ltd. has mature production technology and large production scale and market scale. The tantalum clad pressure vessel produced by the company is widely used in the production and processing industry related to inorganic chemistry, and has been tested for production quality many times, and has safety performance.