4results about How to "Good castability" patented technology

This invention belongs to the field of aluminum alloy technology, specifically a modified ZL303 aluminum alloy and its manufacturing method. The ZL303 aluminum alloy is modified using a Zr-based amorphous nanocrystalline alloy modifier. By modifying the ZL303 aluminum alloy, its hardness and toughness are improved while maintaining its good corrosion resistance and casting performance. The modified ZL303 aluminum alloy obtained by this invention has an average grain size of 8.0–8.5 μm, a Vickers hardness ≥75 HV, a tensile strength ≥220 MPa, and a fracture toughness ≥70 kg·mm². ‑3 / 2 .

The invention discloses a high-toughness and high-corrosion-resistance extrusion casting aluminum alloy material which comprises the following components in percentage by weight: 6%-10% of Si, 0.4%-0.6% of Mg, 0.8%-1.4% of Cu, 0.08%-0.15% of Fe, 0.04%-0.12% of Ti, 0.015%-0.030% of Sr, 0.02%-0.15% of Cr, 0.02%-0.09% of Zr, less than or equal to 0.1% of impurities and the balance of Al, and the weight ratio of Ti to Zr is Ti + Zr < lt >. 0.18%, 0.1% lt; cr + Zr [lt]; and 0.2%. According to the aluminum alloy material, the strength and toughness are improved by reasonably proportioning Cu and Mg elements, the structure compactness is optimized by combining an extrusion casting process, an oxidation film is thickened by accurately adding low-content Cr and Zr elements, the strength and the corrosion resistance are synergistically improved, the blank in the aspect of optimizing the comprehensive performance of AlSiMg alloy in the prior art is filled up, and the aluminum alloy material is suitable for being used in the field of aluminum alloy production. And the harsh requirements on materials in the high-end manufacturing field are met.

The application relates to an aluminum-silicon-strontium-titanium-zirconium alloy and an aluminum-silicon-strontium-titanium-zirconium alloy welding wire prepared from the same and belongs to the technical field of aluminum alloy welding wires. The alloy components and the weight percentages are as follows: Si: 4.50-5.50%; Mg: 0.01-0.05%; Sr: 0.02-0.50%; Ti: 0.01-0.15%; Zr: 0.01-0.20%; La: 0.01-0.10%; Ce: 0.01-0.15%; C: <0.0010%; the balance is Al and inevitable impurity elements, and the content of the inevitable impurity elements is less than 1.0 wt%. The application further discloses an aluminum-silicon-strontium-titanium-zirconium alloy welding wire prepared from the aluminum-silicon-strontium-titanium-zirconium alloy. Through control of the alloy components and the content of each component, the welding wire formed by the application has excellent performance in alloy mechanical properties, casting performance, grain refinement and welding quality.

The application provides a high-casting-performance beryllium aluminum alloy and a preparation method thereof, and belongs to the technical field of alloy materials.The preparation method comprises the following steps: preparing materials according to the weight percentages of Be ingots, Al ingots, Ag ingots, Co sheets, Si and La metals; placing the Ag ingots, the Co sheets, the Si and the La metals at the bottom of a crucible, then sequentially placing the Al ingots and the beryllium ingots into the crucible, refining, and obtaining a melt; uniformly stirring the melt, then gradually cooling the melt to a pouring temperature, then pouring the melt into a prefabricated ceramic mold shell, and standing for 3-5 minutes in a furnace and cooling outside the furnace.The beryllium aluminum alloy has a uniform and dense structure, good fluidity, high casting performance, and is easy to be cast into a shape, and has fewer casting defects.