Cutting and machining zirconium
Thermal treatment of zirconium
Zirconium is a valuable alloying element. This malleable and ductile metal is characterized by heat resistance and excellent corrosion resistance in aggressive environments. Its heat treatment has a number of peculiarities. For example, the tensile strength of this metal decreases with increasing temperature. It is also worth taking into account that when heating the billet above 400 ° C, creep indicators increase. Domestic engineers have developed technology of rolling pipes of any profile from zirconium alloy KTZ-110. Annealing is carried out in vacuum, the surface is etched. Such tubes are relevant in heat-exchange systems of nuclear boilers, they can operate at up to t° 2000°C.
Cutting
To increase the efficiency of cutting, CNC lathe with cutters of special composition (for example, plates ВК8) is used. Cutting ingots into blanks can be done with circular saws at low rpm in order to avoid overcutting. Surface cleanliness during turning is obtained by low feed and the use of a special lubricating fluid coolant.
Anodizing
The uniqueness of this metal has long attracted jewelers, Anodized zirconia can cast pure spectral colors, providing the greatest opportunity to implement any design ideas. If you're looking for exclusive pieces, you should consider anodized jewelry made from this metal. These pieces are elegant, thoughtful and beautifully crafted, appealing in their completeness.
Hydrogenation
When zirconia is hydrogenated, it expands several times in volume, allowing for the joining of diverse materials when soldering or welding is not applicable. This process is used to make double-layered tubes from materials with different heat resistance, such as brass and tungsten. If brass and tungsten sleeves are put on a zirconium ring and hydrogenated for one hour at 400°C, the brass and tungsten will stick together permanently.
Electro-refining
This is the primary method of cleaning zirconium sheets from impurities. The sheet is lowered into an electrolyte, and another zirconium sheet serves as a cathode, on the surface of which the pure metal is deposited. The process pays for itself through the "anodic slag", which easily decomposes into valuable chemical elements.
Furnizor
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