| Customization: | Available |
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| Application: | Transportation Tools, Door & Window, Glass Wall, Heat Sink, Decorations |
| Shape: | Round |
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The invention discloses an aluminum-titanium-boron alloy and a powder metallurgy forming method thereof. The aluminum-titanium-boron alloy contains 69% 73% aluminum, 24% 28% titanium and 2% 4% boron by weight ratio; The powder metallurgy forming method includes four steps: preparation of raw materials, auxiliary materials, tooling and equipment, vacuum induction melting of alloy, preparation of master alloy powder and powder metallurgy forming. The aluminum-titanium-boron alloy of the invention has low impurity content, fine grain, uniform composition and high titanium-boron content, and the powder metallurgy method has high purity, no pollutants, no waste gas, easy control, stable quality and high yield.
itanium and its alloys are widely used in the fields of aviation, aerospace, shipbuilding, automobile, chemical industry and medicine because of their low density, high specific strength, strong corrosion resistance and non-toxic. Due to the unique processing characteristics of titanium products, the finished product rate in the process of production and processing is generally about 50%, and a large number of titanium chips will be produced in mechanical processing, so it is necessary to recycle titanium chips. At present, the recovery of titanium chips mainly adopts special titanium chip recovery equipment or based on the existing equipment to recover titanium chips.The former has high equipment cost and low utilization rate; Due to the small density and poor compactness of the titanium chip electrode, the latter reacts unstably in the vacuum smelting process, causing damage to the equipment and easily causing danger.
As an effective grain refiner for aluminum and aluminum alloys, Al Ti B alloy is widely used in production. The preparation of Al Ti B alloy is mainly fluorinated salt reaction method, melt element mixing method, self-propagating high temperature synthesis method, etc. Aluminum-titanium-boron alloy is prepared by fluoride reaction by adding a certain proportion of potassium fluotitanate and potassium fluoborate into the molten aluminum melt. The aluminum-titanium-boron alloy produced by this method has low price and strong refining effect, which is widely used in industrial production. However, titanium and boron in the fluorine-salt reaction are derived from fluorine-containing compounds, so a large number of fluorine-containing compounds need to be used as raw materials, resulting in the release of a large amount of fluoride dust in the preparation process, which not only pollutes the environment but also has a certain impact on health. In addition, the fluoride produced corrodes the lining to a certain extent and is included in the aluminum-titanium-boron alloy, which deteriorates the performance of the alloy. Aluminum-ti-boron alloy is prepared by melt element mixing method by reacting the alkali metals of sponge titanium and boron with aluminum melt. This method can reduce the amount of granular raw materials, the volatilization of fluorine salts and the decrease of melt temperature, but there are more borides in the prepared alloy, less effective particles tib2, the refining effect is not ideal and the cost is high. The self-propagating high-temperature synthesis method is to make aluminum-titanium-boron alloy by adding the elemental powder pressed block of aluminum, titanium and boron into the aluminum melt. The purity of the alloy obtained by this method is high, but it is not easy to be used in the actual production because the reaction temperature is not easy to control and the price of raw materials is expensive.
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