50results about How to "Liquid-solid phase solidification temperature range is low" patented technology

The invention discloses silver-free and brittle fracture-resistant 18K rose gold and a processing technology thereof. The silver-free and brittle fracture-resistant 18K rose gold comprises the following components in percent by weight: 0.2-0.4wt.% of Ba, 0.6-0.8wt.% of V, 1.2-1.6wt.% of Ni, 1.0-1.2wt.% of Sb, 8.0-12.0wt.% of In, 74.0-76.0wt.% of Au and the balance of copper. The invention providesnovel silver-free 18K rose gold and the processing technology thereof, and the characteristic of low-temperature brittle fracture of the conventional rose gold is avoided. Through the innovation andoptimization of the alloy components, the development bottleneck of a 18K red gold material for jewelries is broken through; implementation and industrialization of the material achieve plenteous economic results and social benefits.

The invention discloses high damping Ca and Mg containing aluminum alloy for pressure casting and a processing technology thereof. The alloy is prepared from the following components in percentage byweight: 0.8-1.5wt% of Ca, 2.0-8.0wt% of Mg, 3.0-5.0wt% of Sn, 0.5-1.2wt% of Y, 0.4-0.6wt% of Mo, 0.2-0.5wt% of Be and the balance of aluminum. The aluminum-calcium alloy has excellent pressure castingperform and excellent damping perform and is expected to have positive significance of development and promotion of an aluminum alloy pressure casting technology and even the whole pressure casting industry and a technology thereof.

The invention discloses a high temperature-resistant Ba-Re-Te zinc alloy applied to cold chamber die casting and a processing process thereof. The alloy is prepared from the following components in percentage by weight: 0.4-1.2wt% of Ba, 0.4-0.8wt% of Re, 0.6-0.8wt% of Te, 2.0-4.0wt% of Ge, 0.5-0.8wt% of V, 0.2-0.4wt% of Pr and the balance of zinc. The zinc-barium alloy has excellent die-casting performance and can be used for producing long thin-walled parts; meanwhile, in the die casting process, the zinc-barium alloy can be casted by using cold chamber; the production efficiency is greatlyimproved; the energy consumption is reduced; the obtained products can be widely used in electric appliance manufacturing industry and radio industry.

The invention discloses an Ag-Li-Sn silver lithium electrical contact alloy with high thermal conductivity and damping and a processing technology thereof. By weight percentage, the chemical composition of the alloy is: Li:0.5‑3.0wt.%, Sn:1.0‑1.5wt.%, Zn:2.0‑4.0wt.%, Ba:0.5‑1.5wt.%, Sr:0.5‑ 1.2wt.%, Pd: 0.2‑0.4wt.%, Zr: 0.2‑0.3wt.%, Th: 0.1‑0.2wt.%, Ce: 0.5‑0.8wt.%, B: 0.5‑1.0wt.%, The balance is silver. Compared with silver alloys used in traditional electrical contact materials, this material has excellent mechanical properties, high electrical conductivity and high damping coefficient.

The invention discloses a high-damping Ag-Li-Sn silver-lithium alloy with electrical conductivity close to that of pure silver. In terms of weight percentage, the chemical composition of the alloy is: Li:0.5‑3.4wt.%, Sn:2.6‑3.8wt.%, Be:0.2‑0.5wt.%, Hf:0.1‑0.3wt.%, Sr:0.5‑ 0.8wt.%, Ge: 0.2‑0.4wt.%, In: 0.1‑0.3wt.%, Ta: 0.1‑0.3wt.%, Gd: 0.2‑0.3wt.%, B: 0.2‑0.4wt.%, The balance is silver. Compared with traditional electrical contact silver alloys, the material has excellent mechanical properties, high electrical conductivity and excellent damping properties.

The invention discloses high-thermal-conductivity Ge-containing magnesium alloy suitable for cold chamber die casting and a processing technology thereof. The alloy is prepared from the following components in percentage by weight: 0.5-1.2wt.% of Ca, 2.4-3.5wt.% of Ge, 1.0-2.5wt.% of Mn, 2.4-3.8wt.% of Ni, 0.5-1.2wt.% of Y, 0.2-0.6wt.% of Nb and the balance of magnesium. The magnesium-calcium alloy has excellent die casting properties and excellent thermal conductivity and is expected to have a promotion effect of enabling fine new materials independently researched and developed in China to occupy the market of international fine new materials.

The invention discloses a high-electric-conductivity Ba and Re-contained aluminum alloy for a copper-clad aluminum conductor and a machining process thereof. The alloy comprises the following components in percentage by weight: 0.8-1.5 wt.% of Ba, 0.2-0.4 wt.% of Re, 0.2-0.3 wt.% of Zr, 0.5-0.8 wt.% of Zn, 0.1-0.2 wt.% of Pd, 0.5-0.8 wt.% of Te, and the balance of aluminum. The aluminum rhenium alloy achieves excellent mechanical performances and electric conductivity, which are not possessed by a traditional aluminum alloy for the copper-clad aluminum conductor. The alloy achieves wide purposes in the electric appliance manufacturing industry, the electric wire and cable industry and the radio industry.

The invention discloses a palladium-magnesium alloy for a magnesium-containing high-conductivity and high-strength electrical contact material. In terms of weight percentage, the chemical composition of the alloy is: Mg: 1.5‑3.0wt.%, Hf: 0.2‑0.8wt.%, Re: 0.2‑1.4wt.%, Sn: 1.2‑1.4wt.%, Al: 1.0‑ 1.5wt.%, Co: 0.4‑0.5wt.%, Ag: 0.2‑0.8wt.%, Si: 0.2‑0.4wt.%, Ge: 0.1‑0.2wt.%, B: 0.2‑0.5wt.%, The balance is palladium. Compared with the traditional electrical contact palladium alloy, the material has excellent mechanical properties and high electrical conductivity.

The invention discloses high-strength W-containing magnesium alloy applicable to cold chamber die casting and a machining process of the high-strength W-containing magnesium alloy. The high-strength W-containing magnesium alloy comprises the following components in percentage by weight: 1.2wt% to 1.6wt% of Ca, 0.4wt% to 0.8wt% of W, 0.2wt% to 0.5wt% of Cr, 1.2wt% to 1.8wt% of Sc, 0.4wt% to 0.6wt%of Ta, 1.2wt% to2.6 wt% of In and the balance of magnesium. The magnesium-calcium alloy is excellent in die casting property and is also excellent in mechanical property. Expectedly, the high-strengthW-containing magnesium alloy plays a promotion role for our country to independently research and develop competitive new materials and occupy the international competitive new material markets.

The invention discloses a high thermal conductivity Ca and Re containing aluminum alloy for pressure casting and a machining technology thereof. The high thermal conductivity Ca and Re containing aluminum alloy for pressure casting is prepared from the components of, in percentage by weight, 0.6-1.5% of Ca, 1.6-3.2% of Re, 3.0-4.5% of In, 0.8-1.5% of Sc, 0.4-0.8% of Mn, 0.2-0.5% of Be, and the balance of aluminum. The kalzium metal has the excellent pressure casting property, and excellent thermal conductivity performance. The invention is predicted that the aluminum alloy has active meaning on the aluminum alloy pressure casting technology even the whole pressure casting industry and development and improvement of the technique of pressure casting.

The invention discloses a high-temperature-resisting Y containing lead-lithium alloy with an extremely low machining hardening rate and a machining technology of the high-temperature-resisting Y containing lead-lithium alloy. The high-temperature-resisting Y containing lead-lithium alloy comprises components including, by weight percent, 0.8 wt.%-1.5 wt.% of Li, 0.3 wt.%-0.5 wt.% of Y, 0.2 wt.%-0.4 wt.% of Nb, 0.5 wt.%-0.8 wt.% of Ge, 0.3 wt.%-0.5 wt.% of W, 0.2 wt.%-0.3 wt.% of Te and the balance lead. The lead-lithium alloy has the extremely low machining hardening rate and excellent high-temperature performance. The performance exceeds a traditional shielding material lead alloy, and the high-temperature-resisting Y containing lead-lithium alloy is widely applied to the military and civil fields.

The invention discloses a corrosion-resistant Cu-Li-Os copper-lithium alloy with conductivity close to that of pure copper. In terms of weight percentage, the chemical composition of the alloy is: Li:0.5‑1.2wt.%, Os:0.2‑0.4wt.%, Pt:0.4‑0.8wt.%, Al:0.2‑0.6wt.%, Sr:1.0‑ 1.5wt.%, Bi: 0.2‑0.4wt.%, Ga: 0.2‑1.2wt.%, Ag: 0.2‑0.4wt.%, Ho: 0.1‑0.2wt.%, B: 0.2‑0.6wt.%, The balance is copper. Compared with traditional copper alloys for cables, this material has excellent mechanical properties, excellent corrosion resistance and high electrical conductivity.

The invention discloses a high-strength die casting zinc alloy containing Ca and Be for an ocean platform and a processing technology of the high-strength die casting zinc alloy. The zinc alloy is prepared from the following components by weight percent: 1.0 to 1.5 percent of Ca, 0.5 to 0.8 percent of Be, 1.5 to 2.0 percent of Cu, 0.5 to 0.9 percent of Sc, 1.5 to 2.8 percent of Co, 0.4 to 0.8 percent of Te, and the balance of zinc. The zinc-calcium alloy has excellent die casting performance and excellent mechanical performance. The high-strength die casting zinc alloy containing Ca and Be isexpected to be widely applied to the industry of novel ocean platforms.

The invention discloses a Cu-Li-Sc copper-lithium alloy with high thermal conductivity close to the conductivity of pure copper. In terms of weight percentage, the chemical composition of the alloy is: Li:0.2‑1.0wt.%, Sc:0.2‑0.8wt.%, Pd:0.4‑1.2wt.%, In:0.4‑0.8wt.%, Sr:1.5‑ 2.0wt.%, Cr: 0.4‑0.8wt.%, Ru: 0.2‑0.6wt.%, Ir: 0.2‑0.5wt.%, Pr: 0.1‑0.2wt.%, B: 0.4‑1.0wt.%, The balance is copper. Compared with traditional copper alloys for cables, this material has excellent mechanical properties, high electrical conductivity and high thermal conductivity.

The invention discloses corrosion-resistant 10K rose gold without silver and a processing technology of the 10K rose gold. Components of the alloy comprise, by weight percentage, 0.6-0.8 wt.% of Li, 1.0-1.5 wt.% of Rh, 0.3-0.5 wt.% of Ta, 0.1-0.4 wt.% of Pr, 30.0-32.0 wt.% of In, 40.0-42.0 wt.% of Au and the balance copper. The invention provides the novel 10K rose gold without silver and the processing technology of the 10K rose gold. The characteristics that color fading and surface scratches happen in use of traditional rose gold are avoided. Due to innovation and optimization of the alloycomponents, the developing bottleneck of a 10K rose gold material for jewelry is broken through, fruitful economic gain and social benefits can be obtained during implementing and industrialization ofthe material.

The invention discloses a high-wear-resistant Ba-Re-Ge zinc alloy suitable for cold chamber die casting, and a processing technology thereof. The alloy is prepared from the components in percentage byweight: 0.8 to 1.2 percent of Ba, 0.4 to 0.6 percent of Re, 1.5 to 2.4 percent of Ge, 1.2 to 1.6 percent of Sc, 0.5 to 0.6 percent of Nb, 0.2 to 0.3 percent of Ce, and the balance of zinc. The zinc-barium alloy has an excellent die casting performance, and can be used for growing a long thin-wall parts. In addition, during a die casting process, a cold chamber can be adopted for casting, so thatthe production efficiency is greatly improved, and the energy consumption is reduced. The obtained product is widely used in an electric appliance manufacturing industry and a radio industry.

The invention discloses an Al-Li-Ba aluminum-lithium alloy with higher electrical conductivity than pure aluminum and high thermal conductivity. In terms of weight percentage, the chemical composition of the alloy is: Li:2.0‑4.0wt.%, Ba:0.2‑0.6wt.%, Cu:1.5‑2.5wt.%, Ag:0.5‑1.5wt.%, Sr:1.0‑ 1.5wt.%, Pt: 0.2‑0.3wt.%, Zr: 0.2‑0.5wt.%, Nb: 0.1‑0.4wt.%, Gd: 0.1‑0.2wt.%, B: 0.5‑1.0wt.%, The balance is aluminum. Compared with traditional aluminum alloys for cables, this material has excellent mechanical properties, high electrical conductivity and high thermal conductivity.

The invention discloses a high thermal conductivity Au-Li-Se gold-lithium alloy for electrical contact materials. In terms of weight percentage, the chemical composition of the alloy is: Li:0.2‑0.4wt.%, Se:0.2‑0.5wt.%, Bi:1.0‑2.5wt.%, Nb:0.2‑0.5wt.%, Mg:1.5‑ 3.5wt.%, Fe: 0.2‑0.8wt.%, Be: 0.1‑0.2wt.%, Al: 0.2‑0.6wt.%, Si: 0.2‑0.6wt.%, B: 0.2‑0.5wt.%, The balance is gold. Compared with traditional electrical contact gold alloys, the material has excellent mechanical properties, high electrical conductivity and high thermal conductivity.