39 results about "Beryllium-Aluminum Alloy" patented technology

The invention discloses a beryllium-aluminum-zirconium-series multi-element alloy and a preparation method thereof which aim at solving the problems that at present, a method that a beryllium-aluminumalloy is prepared by adopting powder hot isostatic pressing is complicated in technology and very high in cost and greatly limits application of the beryllium-aluminum alloy. The beryllium-aluminum-zirconium-series multi-element alloy is prepared and formed by adopting the following raw materials of, by weight, 54-80% of metal beryllium, 17-45% of metal aluminum, 0.2-2% of metal zirconium and 0.1-1.0% of add element. In the beryllium-aluminum-zirconium-series multi-element alloy and the preparation method thereof, based on an existing beryllium-aluminum alloy, the metal zirconium and other alloying elements are added, a beryllium-aluminum alloy base material is prepared firstly, then a pre-alloying beryllium-aluminum-zirconium-series multi-element alloy is prepared through a vacuum induction smelting method, and then the beryllium-aluminum-zirconium-series multi-element alloy is obtained through subsequent remelting. According to the beryllium-aluminum-zirconium-series multi-element alloy and the preparation method thereof, by conducting multi-element alloying of zirconium and other elements on the beryllium-aluminum alloy, an equiaxed crystal alloy with the refined structure andthe uniform size can be obtained, structure defects and composition segregation are reduced, and alloy plasticity is improved, so that alloy mechanical properties are greatly improved, and the excellent comprehensive performance is achieved.

The invention discloses a special composite slag removing agent for beryllium aluminum alloy refining, a preparation method and a slag removing method. The slag removing agent comprises the followingcomponents in parts by weight: 30-50 parts of sodium tetraborate, 2-8 parts of AlB12 intermediate alloy, 2-5 parts of hexachloroethane, 7-10 parts of sodium hexafluorisilicate, 2-6 parts of sodium fluoroaluminate, 1-5 parts of sodium fluoride, 5-12 parts of potassium chloride, 6-13 parts of beryllium chloride, 2-5 parts of lithium chloride, 2-5 parts of sodium carbonate, and 1-3 parts of clay. Theslag removing agent achieves excellent high-temperature stability and reliability under the vacuum condition, and is excellent in adhesiveness after melting, high in spreadability, quick in slag collection, easy incrustation of slag skin and excellent in slag removing and refining effect. Through the synergistic effect of all the components, oxides in melts, magnesium-contained impurities and hydrogen achieve excellent slag removing and absorbing effects; and meanwhile, the slag skin can effectively cover the surfaces of the melts, so that the temperature loss can be effectively reduced, thesplashing of the melts is inhibited, and new melting slag and secondary oxidation are prevented.