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Machined Finished Zirconium Forged Flange ASTM B493 R60702

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Shaanxi High-end Industry &Trade Co., Ltd.

Machined Finished Zirconium Forged Flange ASTM B493 R60702

Country/Region	china
City & Province	baoji Shaanxi
Categories	Flanges

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Zirconium forged Astm b493 R60702 forged flange

Product

Spongy zirconium is used as raw material in the ingot for the processing of tube and rod.The spindles used in nuclear power engineering should be made from zirconium sponge of nuclear grade, and the content of more than 20 impurity elements such as HF, B, Cd and U should be strictly limited.Alloying elements may be added in the form of high purity metals or master alloys.

Spongy zirconium and alloying elements were pressed into rod-like electrodes and smelted twice in a vacuum consumable electric arc furnace to obtain the ingot with compact structure and uniform composition.The sponge zirconium and alloying elements should be largely evenly mixed before the rod electrode is pressed.The pressed electrode should be of appropriate density.

The chemical composition of the spindle in all parts of the surface shall be within the prescribed limits for secondary smelting.In order to avoid the possibility of the low melting point alloying element (Sn) flowing ahead in the first smelting, the alloying element is added in the form of the parent alloy, which is more conducive to the uniformity of the composition of the ingot than that of the pure metal.Zr-Sn-Cr-Fe or Zr-Sn-Cr-Fe-Ni parent alloys are used for casting Zr-Sn-Sn alloy.

In the smelting of zirconium and niobium alloy ingots, the addition of alloying elements in the form of Zr-Nb master alloy is easier to avoid the segregation of refractory elements (Nb) than that of pure niobium.The parent alloy is usually refined in a vacuum non-white electrode arc furnace.Zirconium alloy ingots prepared by vacuum consumable smelting generally weigh about several hundred kilograms, and its composition uniformity is easy to control, which is also suitable for plastic processing.Advances in modern casting techniques have enabled the production of homogeneous ingots weighing more than 1t.

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