7results about How to "Improve casting effect" patented technology

The invention discloses a metal bar casting device for a building climbing frame chain, and relates to the technical field of building climbing frames. The device comprises a mounting bracket, wherein a conveying mechanism and a casting mechanism which are matched for use are arranged at the top end of the mounting bracket; through cooperative use of the casting mechanism and the material vibrating mechanism, mold opening and mold closing can be conveniently achieved, so that convenient casting of the metal rod for manufacturing the building climbing frame chain can be guaranteed, and after molten metal liquid is cast, a knocking sinker bar can be driven to reciprocate up and down through cooperative use of an elastic shifting piece and a reset spring; according to the metal bar for manufacturing the building climbing frame chain, the first mold can collide with the second mold, so that the corresponding second mold and the first mold can generate vibration, bubbles doped in casting molten metal liquid in the corresponding second mold and the first mold can be effectively discharged, and the casting effect of the metal bar for manufacturing the building climbing frame chain is effectively improved; therefore, the phenomenon that the strength of the building climbing frame chain is reduced due to bubbles can be avoided.

The preparation method comprises the following steps: smelting 0.25%-0.5% of Mg, 1.5%-2.5% of Si, less than or equal to 0.5% of Fe, less than or equal to 0.2% of Sc, less than or equal to 0.15% of Zr, less than or equal to 0.025% of Ti, 0.002%-0.08% of B, less than or equal to 0.01% of Mn + Cr + V, 0.05%-0.2% of fullerene, less than or equal to 0.05% of single other impurities, less than or equal to 0.15% of the total amount of the impurities and the balance of aluminum in a temperature range of 720-750 DEG C; uniformly mixed precast blocks of Al-2Sc or Al-5Zr alloy powder and fullerene are pressed into the melt until the precast blocks are completely melted, and the alloy melt is subjected to casting molding to obtain a corresponding product. By adding the fullerene, the alloy has good casting formability, casting forming of a high-voltage switch product can be achieved, the hardness of the alloy is larger than or equal to 75 HBW and the conductivity is larger than or equal to 46% IACS by combining a specific two-stage heat treatment process, and by adding the fullerene, the thermal expansion coefficient of the alloy can be reduced, and the product size stability can be improved.

The present invention discloses a die-cast aluminum alloy and a preparation method and application thereof, and belongs to the technical field of metal materials. The die-cast aluminum alloy provided by the present invention is composed of the following components in mass percentage: 10.5-13% Si, 0.4-0.8% Fe, 0-0.45% Mn, 0.25-0.45% Mg, 0.06-0.1% Ti, 0.05-0.12% Zr, 0.005-0.01% B, 0.015-0.03% Sr, and the remainder is impurity elements and Al; the sum of the mass percentages of Mn and Fe is 0.7-0.9%. The present invention is based on Al-Si alloy, designs a higher Fe content, and prepares a die-cast aluminum alloy with good casting formability and high strength and toughness through the composition optimization design of the main alloy components of Si, Fe, and Mg and the trace elements of Ti, B, Sr, Zr, and Mn.

The application provides an aluminum alloy composite plate, an Al-Mg-Si aluminum alloy and a casting method thereof. The aluminum alloy composite plate comprises a first barrier layer, a core material layer and a second barrier layer in sequence. The core material layer comprises the following alloy components in percentage by weight: Si: 0.3-0.7%, Mg: 0.6-1.1%, Fe: 0.25-0.7%, Cu: 0.05-0.5%, Zr: 0.02-0.1%, and Ti: 0.01-0.1%. After aging, the Si and Mg elements in the core material layer exist in the state of beta'' strengthening phase, beta' strengthening phase and beta phase. The aluminum alloy composite plate provided by the application can balance the requirements of casting forming property and stamping forming property, has high strength, and has wide application prospect.

The utility model discloses a controllable flow's large -scale casting with flow inoculation device, including storage box, the bottom fixed connection of storage box has ration assembly, one side fixed mounting of ration assembly has power component no.

The invention provides crystallizer casting powder for continuous casting of a high-hydrogen-content medium carbon steel slab, a preparation method and application, and the crystallizer casting powder for continuous casting of the high-hydrogen-content medium carbon steel slab comprises the following components in percentage by mass: 15-22% of CaO, 30-38% of SiO2, 9-14% of Na2O + K2O, 6-9% of F, 0.5-1.5% of Li2O, 1-3% of B2O3, 4-6% of C and the balance of inevitable impurities. Moreover, the preparation method is simple, convenient to operate and suitable for industrial large-scale production, and the production cost is reduced.

The utility model relates to the field of casting, in particular to an aluminum alloy casting structure of a heavy truck compressor box body, which comprises a part formed by casting and a die for forming the part by casting, two through holes with different sizes are formed in the part, inner cavity lugs are formed in the positions, close to each other, of the two through holes, two bottom flanges are formed at the bottom of the part, and the inner cavity lugs and the root positions of the bottom flanges are hot spot positions of the sand core. The mold cavity is located in the mold, an opening is formed in the side face of the mold, the sand core is arranged in the mold cavity in a matched mode, the chilling blocks are arranged at the hot spot position of the outer wall of the sand core, and the casting opening core head lengthening piece is arranged on the portion, at the casting opening, of the sand core. A part is formed between the mold cavity and the sand core, and the casting opening core head lengthening piece penetrates through the through hole in a matched mode after forming. According to the utility model, the chilling block and the casting gate core head lengthening piece are arranged, so that the casting effect is better, the original hot spot shrinkage cavity part is greatly improved, and the quality of the final finished product part is good.