Introduction and manufacturing characteristics of tantalum and tantalum tubes
Tantalum cannot be processed by ordinary methods for processing general metals. Generally, the initial process is forging and heat treatment, and flat billets or round and small billets are made by hammering and stamping.
Tantalum Ta, a metal element, mainly exists in tantalite and coexists with niobium. Tantalum has moderate hardness and rich ductility, and can be drawn into thin foils in the form of filaments. Its thermal expansion coefficient is very small. Tantalum has very excellent chemical properties and has extremely high corrosion resistance. Whether in cold or hot conditions, it does not react to hydrochloric acid, concentrated nitric acid and "aqua regia". It can be used to make evaporating vessels, etc., and can also be used as electrodes, rectifiers, and electrolytic capacitors for electron tubes. It is used in medicine to make thin sheets or thin wires to repair damaged tissues. Although tantalum has strong corrosion resistance, its corrosion resistance is due to the formation of a stable tantalum pentoxide (Ta₂O₅) protective film on the surface.
Manufacturing characteristics of tantalum tubes
Tantalum can be made into welded tubes and seamless tubes, and has a wide range of uses. Seamless tubes are manufactured by extrusion, tube reduction or deep drawing from sheet metal. The welded manufacturing method is to form the sheet metal strip first, then form the tube, and then weld the seams using gas tungsten arc (GTAW).
Tantalum tube basic parameters
|
Item |
Tantalum |
|
Relative atomic mass |
180.9479 |
|
Atomic number |
73 |
|
Melting point |
2996°C |
|
Boiling point |
5425°C |
|
Density |
16.65g/cm3 |
|
Method |
HIP/Melting |
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