33results about How to "Less prone to shrinkage cavity formation" patented technology

The invention discloses Mg-Ca-In magnesium alloy for pressure casting and with high damping characteristic as well as a processing process thereof. The alloy comprises the following components in percentage by weight: 0.6 to 1.5 percent of Ca, 1.6 to 3.2 percent of In, 3.0 to 4.5 percent of Sn, 0.8 to 1.5 percent of Sb, 0.4 to 0.8 percent of Zr, 0.2 to 0.5 percent of Be and the balance of magnesium. The magnesium calcium alloy has excellent pressure casting property and also has excellent damping property. The bottom layer property of the traditional magnesium for casing is expected to be innovated and optimized, so positive significance in development and improvement of the magnesium alloy pressure casting process, even the whole pressure casting industry and the technology thereof is achieved.

The invention discloses an aluminum-lithium alloy with extremely excellent die-casting performance when smelted between 700-800 degrees and a processing technology thereof. In terms of weight percentage, the chemical composition of the alloy is: Li: 4.0‑8.0wt.%, Sr: 1.0‑1.5wt.%, Si: 2.0‑3.0wt.%, Mg: 1.0‑1.5wt.%, Ge: 0.5 ‑1.2wt.%, Th: 0.1‑0.3wt.%, Nd: 0.2‑0.5wt.%, B: 0.5‑1.2wt.%, and the balance is aluminum. The aluminum-lithium alloy material has good casting properties and is suitable for pressure casting of thin-walled parts under a protective atmosphere. It is especially suitable for casting lightweight structural materials that require lightweight features, and has a huge market prospect.

The invention discloses a silver alloy with hydrogen sulfide corrosion resistance and excellent die casting performance for jewelry. The alloy comprises, by weight, 0.1%-0.2% of B, 1.2%-1.5% of Ca, 2.0%-3.0% of Al, 1.6%-1.8% of Ni, 3.0%-5.0% of In, 1.0%-1.2% of Ge, 1.5%-1.8% of Sn and the balance silver. According to the silver alloy, a material solution is provided for sulphide discoloration of the silver alloy on the current market. Not only is the production cost reduced, but also the relevant production technology and equipment requirements are simplified greatly. It can be estimated thatrich economic results and social benefits can be achieved through implementation and industrialization of the silver alloy.

The invention discloses a jewelry silver alloy having blue gloss and corrosion resistance and a technology of the silver alloy. The alloy comprises compositions including, by weight, 0.1%-0.2% of P, 1.0%-1.2% of Mg, 4.0%-5.0% of In, 3.2%-4.8% of Co, 0.4%-0.6% of Mo, 0.1%-0.2% of Th, 1.5%-1.8% of Ge and the balance silver. A new type capable of having the blue gloss is provided for colorful silveron the market at present by means of the material, and in addition, the material further has the excellent color-changing-resistant characteristic. The production cost is reduced, and the related production technology and equipment meets are greatly simplified. It can be predicted that material implementation and industrialization can obtain plenteous economic gains and social benefits.

The invention discloses high-strength anticorrosion V-containing zinc alloy suitable for hot chamber die casting and a processing technology of the high-strength anticorrosion V-containing zinc alloy.The high-strength anticorrosion V-containing zinc alloy is prepared from the following components by weight percent: 0.8 to 1.5 percent of Ba, 0.3 to 0.5 percent of Ru, 0.8 to 1.2 percent of V, 0.5 to 0.8 percent of In, 0.5 to 1.0 percent of Co, 1.5 to 2.4 percent of Sb, and the balance of zinc. The zinc-barium alloy has excellent die casting performance and can also be cast by adopting a hot chamber. The high-strength anticorrosion V-containing zinc alloy has excellent mechanical performance and anticorrosion performance and can be widely applied in the industries such as transportation, power electronics, machinery, national defense and military industry.

The invention discloses a corrosion-resistant aluminum alloy containing Ca and Cr and used for die casting and a processing technology thereof. The alloy comprises the components of, by weight, 0.5-1.0 % of Ca, 1.6-2.4% of Cr, 0.8-1.2% of Pd, 0.5-0.8% of Ge, 0.2-0.5% of Sb, 0.4-0.8% of Be, and the balance aluminum. The aluminum-calcium alloy has excellent die-casting performance and excellent corrosion resistance, and it is expected that the corrosion-resistant aluminum alloy containing Ca and Cr and used for die casting and the processing technology thereof have positive significance to the aluminum alloy die-casting technology and even the whole die casting industry and development and promotion of the technique thereof.