5results about How to "Improve filling ability" patented technology

The utility model relates to the field of evanescent mode casting, in particular to a double-liquid double-metal hammerhead preparation mold based on evanescent mode casting. The preparation mold comprises a hammer head model, the hammer head model comprises a riser, a hammer head part, a hammer handle part and a temperature measurement pouring gate, the riser, the hammer head part and the hammer handle part are sequentially connected from top to bottom, the temperature measurement pouring gate is located on one side of the riser, and the bottom end of the temperature measurement pouring gate is connected with the hammer handle part and is close to the joint of the hammer handle part and the hammer head part; the casting sand box is provided with a cavity matched with the hammerhead model; the thermocouple is used for being inserted into the bottom of a cavity where the temperature measuring pouring gate is located; the ultrasonic device is used for being inserted into a cavity where the riser, the hammer handle part and the hammer head part are located; and the lifting device is in transmission connection with the ultrasonic device so as to drive the ultrasonic device to move in the vertical direction. By means of the manufacturing mold, the problem that casting defects exist when a double-liquid double-metal hammer is cast in an existing casting technology is solved, and the production cost is reduced.

The invention relates to a semi-solid alloying method for preparing a metal alloy material. The method comprises the following steps: firstly, obtaining a solid-liquid coexistence temperature interval suitable for treatment based on a phase diagram and thermodynamics calculation; then selecting metal raw materials forming the target component, and assembling the metal raw materials into an original blank with a close contact interface; and in the semi-solid temperature interval, a heat-force coupling process is adopted, a solid-liquid coexisting semi-solid structure is formed through local liquefaction induced by diffusion / mass transfer, and macroscopic flow mixing and microstructure reconstruction of the material are enhanced under the shear deformation or stirring effect, so that uniform alloying and structure refinement of the target alloy material are achieved. Compared with the prior art, the method has the advantages that uniform alloying and structure refinement of the alloy material can be realized under the condition that the traditional multi-step series connection of smelting, casting, heat treatment, deformation processing and the like is not needed, the alloy material with uniform components, fine matrix structure and uniformly distributed second phase is obtained, the process flow is simplified, and the energy consumption is low.

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.

The application discloses a magnesium alloy melt self-moving quantitative pouring method, which realizes die casting forming by pouring the smelted magnesium alloy melt into a die casting machine, characterized in that the smelted magnesium alloy melt is first introduced into a first containing body at a first fixed point to realize metering and obtain a fixed volume of magnesium alloy melt; then the metered magnesium alloy melt is transferred to a second containing body, the second containing body is kept closed, ultrasonic vibration is applied to the magnesium alloy melt in the second containing body, and the second containing body is moved to a second fixed point; and the magnesium alloy melt in the second containing body is introduced into the die casting machine at the second fixed point to realize die casting forming. The application can realize rapid pouring with accurate metering, reduce product defects, improve production efficiency, and is particularly suitable for laboratory magnesium alloy test pieces and small-scale trial production of enterprises.

This invention discloses a near-net-shape forming mold and forming method for complex thin-walled magnesium alloy components with multiple inner ring ribs. The mold includes an upper mold and a lower mold. A punch pad is provided at the bottom of the upper mold, and a punch sleeve is provided at the bottom of the punch pad. The side of the punch sleeve is detachably connected to the upper mold via screw C. A lower pad is provided at the top of the lower mold, and an ejector rod is inserted inside the lower mold. A die pad block is provided at the top of the lower pad. The forming method includes the following steps: magnesium alloy ingot preparation, double-stage homogenization treatment, extrusion billet preparation, homogenized casting for large plastic deformation to obtain a hollow deformed billet with fine and uniform microstructure, and near-net-shape forming of the thin-walled component with multiple inner ring ribs. This invention can achieve one-pass integrated forming of thin-walled cabin components with complex structures such as multiple inner ring ribs and internal bosses. The prepared magnesium alloy cabin components have stable performance and low anisotropy.