92results about How to "Simple smelting and processing method" patented technology

The invention discloses a magnesium-lithium alloy material with extremely high thermal conductivity and containing two-phase α+β and a processing technology thereof. In terms of weight percentage, the composition of the alloy is: Li: 8.0‑10.0wt.%, Si: 5.0‑14.0wt.%, In: 1.0‑3.0wt.%, Sn: 0.2‑1.2wt.%, Ti: 0.8‑ 1.2wt.%, Mo: 0.2‑0.4wt.%, Cd: 2.0‑4.0wt.%, Al: 1.2‑1.4wt.%, Co: 1.0‑5.0wt.%, Mn: 3.0‑5.0wt.%, The balance is magnesium. The material has the mechanical properties of traditional magnesium-lithium alloys: the elastic modulus is 50-70GPa, the yield strength is 90-120MPa, the tensile strength is 140-160MPa, and the elongation is 6-18%. And it has high thermal conductivity that traditional magnesium-lithium alloys do not have: the thermal conductivity is 120-130W/m. K, the traditional magnesium-lithium alloy is 80W/m. K or so. While ensuring the mechanical properties of common magnesium-lithium alloys, the heat transfer coefficient of the alloy can be increased by about 50%. This enables the alloy to have further specific applications in the occasions where the heat generation is large and the weight of the device is required, and it is convenient for large-scale industrial application.

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 an iron-based high-damping alloy with high thermal conductivity and a preparation method thereof. The iron-based high-damping alloy comprises the following components in percentage by weight: 6-8% of Cr, 1-2% of Si, 4-6% of Al, 1.5-2.5% of Hf, 4-9% of Cu, 1-2% of B, 2.5-4.5% of Sn, 2-3% of Co and the balance of Fe. The iron-based high-damping alloy with high thermal conductivity has the mechanical property and damping capacity of the traditional iron-based high-damping alloy: the tensile strength is 540-550 MPa, the elasticity modulus is 80-85 GPa, the yield strength is 240-280 MPa, the elongation is 24-32%, and the SDC is 30-34%. On the basis of ensuring the damping capacity and mechanical property of the existing iron-based high-damping alloy for deformation, the thermal conductivity of the alloy is increased to 110-150 W/m.K from about 60-90 W/m.K and the alloy can be applied to occasions of higher temperature and vibration attenuation on a large scale.

The invention discloses a Mg-Li-Sn alloy with flame retardance and a machining process thereof, and unshielded melting of the Mg-Li-Sn alloy under the atmospheric condition can be achieved. The alloyis composed of, by weight, 10.0-12.0% of Li, 2.0-9.0% of Sn, 4.0-6.0% of Sr, 0.2-0.8% of Mn, 0.1-0.2% of Dy, 0.2-0.3% of Ho, 0.8-1.2% of S, 0.2-0.4% of B, and the balance Mg. The solution of a novel material is provided specific to the current situation that a Mg-Li alloy needs shielded melting during melting under high temperature currently. The Mg-Li-Sn flame-retardant alloy with the excellent flame retardance is obtained by an alloying method, and unshielded melting of the Mg-Li alloy under the atmospheric condition is achieved. When the alloy is exposed in the atmosphere under high temperature, an oxide layer and a nitride film are formed on the surface of the alloy. The films are compact in structure and high in spreadability, and the films are solid and not prone to volatilizing under high temperature and can provide excellent protection so that a magnesium alloy melt can be prevented from being further oxidized. The obtained Mg-Li alloy material has the mechanical performance asa traditional Mg-Li alloy under the room temperature, and further has the high heat transfer coefficient which is not possessed by the traditional Mg-Li alloy, specifically, the heat transfer coefficient of the obtained Mg-Li alloy material is 110-120 W/m.K and the heat conductivity coefficient of the traditional material is about 80 W/m.K.

The invention discloses an additive for increasing the martensite temperature of a Mn-Cu damping alloy and a use method of the additive. The additive is prepared from following components in part by weight: 4-8% of Zn, 1-2% of Eu, 1-3% of Al, 0.2-0.4% of Hf, 2-3% of Ce, 1-2% of Cr, 4-8% of Sn and the balance Fe. On the basis of guaranteeing the damping performance and the mechanical performance of the existing Mn-Cu-based damping alloy for deformation and with the manganese content of 40-60%, the martensite temperature of the alloy is increased to about 60-90 DEG C. Thus, the high damping performance of the alloy can be obtained through furnace cooling after homogenizing treatment for 12 hours at the temperature of 900 DEG C after casting is completed, and no annealing treatment for 4 hours at the temperature of about 425 DEG C is needed.

The invention discloses Li and Sn gold alloy for 14K red gold with low-temperature brittle fracture inhibition. The alloy comprises, by weight, 0.2-0.4wt.% of Li, 0.4-0.6wt.% of V, 1.5-1.8wt.% of Sn,2.0-2.4wt.% of Al, 12.0-20.0wt.% of Ag, 57.0-59.0wt.% of Au and the balance of copper. The problem about lag in technology that existing 14K red gold materials are low-temperature brittle is solved; through innovation and optimization of alloy composition, the bottleneck of the 14K red gold material for jewelry is broken through; the implementation of the material and the industrialization can predictably achieve substantial economical results and social benefits.

The invention discloses a high-wear-resistance high-thermal-conductivity zinc alloy containing strontium and sodium. The alloy comprises, by weight, 0.8-1.2wt% of Na, 0.2-0.3wt% of Sr, 4. 5-6.3wt% ofIn, 0.8-1.2wt% of Zr, 0.4-0. 8wt% of Si, 2.4-3.6wt% of Sn, 0.2-0.5wt% of Yb, 0.1-0.2wt% of Nd, 0.8-1.0wt% of S and the balance of zinc. Compared with a traditional zinc alloy, the high-wear-resistancehigh-thermal-conductivity zinc alloy containing strontium and sodium has excellent mechanical property and heat conduction performance.

The invention discloses Li-containing and Re-containing gold alloy capable of inhibiting low-temperature brittleness and used for 10K red gold. The alloy comprises the following components in percentage by weight: 0.2 to 0.4 percent of Li, 0.3 to 0.5 percent of Re, 0.2 to 0.3 percent of Ti, 3.0 to 4.5 percent of Sn, 25.0 to 32.0 percent of Ag, 41.0 to 43.0 percent of Au and the balance of copper.The patent solves the existing conditions that the current 10K red gold material has low-temperature brittleness and the technology falls behind. The development bottleneck of the 10K red gold material for jewelry is broken through by innovating and optimizing the alloy components. Through prediction, implementation and industrialization of the material can achieve plenteous economic gain and social benefit.

The invention discloses a beryllium containing double phase alpha+beta magnesium-lithium alloy and a processing technology thereof. The alloy is composed of the following components in percentage by weight: 6.0 to 10.0 wt.% of Li, 0.2 to 0.4 wt.% of Be, 1.0 to 3.0 wt.% of Sb, 0.2 to 0.4 wt.% of Cr, 0.1 to 0.2 wt.% of V, 0.2 to 0.4 wt.% of Pb, 0.2 to 0.3 wt.% of Se, and the balance being magnesium.The formula of the alloy is optimized, the melting technology and heat treatment parameters are also optimized, the high temperature phase and strengthening phase of the magnesium-lithium alloy are perfectly matched, and finally the multi-component magnesium-lithium alloy with a strong heatproof performance is obtained. At a room temperature, the magnesium-lithium alloy has the following indexes:yield strength: 120-145 MPa, tensile strength: 170-195 MPa, and elongation rate: 7-12%. At a temperature of 100 DEG C, the magnesium-lithium alloy has the following indexes: yield strength: 120-140 MPa, tensile strength: 165-170 MPa, and elongation rate: 12-16% The alloy melting method is simple, the production cost is low, and the alloy is suitable for industrial large scale application.

The invention discloses single-phase alpha magnesium-lithium alloy with excellent high-temperature mechanical performance and a processing technique of the single-phase alpha magnesium-lithium alloy. The single-phase alpha magnesium-lithium alloy is prepared from the following ingredients by weight percent: 2.0 to 6.0 percent of Li, 0.2 to 0.4 percent of Ca, 0.1 to 0.3 percent of Hf, 0.1 to 0.3 percent of Mo, 0.1 to 0.4 percent of Pb, 0.1 to 0.2 percent of Th, and the balance of magnesium. The invention provides a solution of a novel materials science for the sharp decrease and worsening of mechanical performance of the magnesium-lithium alloy at about 100 DEG C. The material has the mechanical performance of the traditional magnesium-lithium alloy: the elastic modulus is 50 to 70 GPa, the yield strength is 90 to 120 MPa, the tensile strength is 140 to 160 MPa, and ductility is 6 to 18 percent. The single-phase alpha magnesium-lithium alloy has the high-temperature mechanical performance that the traditional magnesium-lithium alloy does not have: the yield strength is 140 to 150 MPa at a temperature lower than 100 DEG C, and the yield strength of the traditional magnesium-lithium alloy is 65 MPa at a temperature lower than 100 DEG C. While the high-temperature mechanical performance is ensured, the service life of the alloy is further prolonged, and the industrialized mass application is facilitated. The magnesium-lithium alloy of the invention can be used at the temperature lower than 100 DEG C and has a significant light-weight effect.

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.