Rhenium ingot manufacturers tell you that preparation of compact rheni-um refers to the process of producing metal rhenium ingots or rhenium bars with compact structure and metal material properties using metal rhenium powder as raw material. Commonly used industrial methods are high temperature sintering and smelting, and the products are rhenium bars and rhenium ingots. The high-temperature sintering method to obtain dense rhenium bars generally needs to go through the general process of powder metallurgy, so it is also called powder metallurgy.

The smelting method uses sintered zinc bars as raw materials to obtain dense metal rhenium through arc smelting, electron beam smelting and district smelting. Rhenium ingot manufacturers tell you that electron beam smelting or district smelting is commonly used in industry. Rhenium can also be plated on tungsten and molybdenum products by thermal dissociation of rhenium halide.
Electron beam melting
The high-energy electron beam generated by the electron gun concentrated on the tip of the consumable rhenium rod and melted it, and the molten rhenium droplets were dropped into the water-cooled copper crucible. The manufacturer of Rhenium ingot tells you that because part of the electron beam is projected into the crucible by means of a magnetic deflector, the metal rhenium on the surface of the crucible is kept in a molten state. And can completely remove impurities. The obtained rhenium ingot was a columnar crystal. Using the raw material of sintered rhenium bars with a purity of over 99.99%, electron beam smelting under 10-6Pa vacuum can obtain high-purity rhenium ingots with a purity of over 99.99%.
Regional smelting
Due to the high melting point and strong chemical activity of rhenium, high-purity dense rhenium and rhenium single crystals are usually prepared by the suspension zone melting method heated by electron beams. The Rhenium ingot manufacturer tells you to use a rhenium bar as the anode, the electron gun as the cathode, and the two poles move slowly relative to each other. The part heated by the electron gun is just in a molten state, resulting in a narrow melting zone, and the molten rhenium does not fall under the action of surface tension. The manufacturer of Rhenium ingot tells you that with the upward movement of the powder electron gun, the impurity elements with distribution coefficient less than 1 are gradually enriched upward. Similarly, impurities with a distribution coefficient greater than 1 are concentrated at the lower end. Cut off the head and tail to take the middle section, so as to achieve the purpose of purification. The rhenium region smelting under 10-10Pa vacuum can obtain rhenium single crystal with spectral purity.