44results about How to "Good alloying performance" patented technology

The invention provides an anode material for liquid-state and semi-liquid-state metal energy-storing batteries, belongs to an electrode material of an energy-storing battery, and solves the problems that the operation temperature is high, the working voltage is low, the corrosion is strong and the pollution to the environment is caused in an existing liquid-state metal battery. The anode material is Sn alloy formed by metal Sn or the Sn and one or more than one monomer of Sb, Pb, Bi and Te. The metal Sn or the Sn alloy is used as the anode material, the smelting point of the metal Sn is low (231.9 DEG C) and the metal Sn has no environmental pollution; the Sn alloy is simple to prepare and is low in cost; the metal Sn, the Sn alloy and an existing cathode material have the good alloy performance and have stability under a high temperature; when the metal Sn and the Sn alloy are applied to a liquid-state metal battery and a semi-liquid-state double-metal battery, the operation temperature can be lowered, the maintenance cost can be reduced, the voltage of the battery can be increased or stabilized, the large-current and high-density charging/discharging performance of the battery is improved, and the service life of the battery is prolonged.

The invention relates to a grinding medium applied to the powder body engineering in industries, such as construction materials, cement and the like, in particular to a production process method of ahigh-carbon multi-element alloy casting grinding ball. The casting grinding ball comprises the following chemical components by weight percent: 1.4-2.5% of carbon, 0.75-0.82% of silicon, 0.46-0.9% ofmanganese, 4.5-6.0% of chromium, 0.04-0.06% of phosphorus, 0.04-0.054% of sulfur, 0.04-0.06% of copper, 0.03-0.04% of molybdenum, 0.02-0.03% of nickel, 0.02% of tungsten, 0.13-0.15% of compound heavyrare earth modificator and 90.4-91.4% of iron. The production operation comprises steps of smelting, casting, heat treatment, mechanical property detection and pouring inspection, wherein heat treatment quenching is oil quenching treatment. The improvements are that: (A) austenitizing treatment is carried out before quenching; and (B) the temperature of quenching oil is 80-140 DEG C, and the quenching time is 6-20 minutes. The formula of the invention is adopted to thin the crystal grains of a grinding ball, the tissues are compact, and the toughness is enhanced; by adopting the technology ofthe invention, the hardness of a high-chromium grinding ball reaches HRc62-64, and the toughness and the wear resistance of the grinding ball are obviously enhanced. On the precondition of further enhancing the properties of wear resistance and crushing resistance of the grinding ball, the content of the noble metal of chromium is reduced, and the manufacturing cost of the grinding ball is also lowered.

The invention discloses a composite solder flux-cored aluminum welding wire and a preparation method thereof. The composite solder flux aluminum welding wire comprises a sheath and a flux core filling the sheath. The sheath is made by rolling the alloy of Cu, Al and the like. The composite solder flux-cored aluminum welding wire and the preparation method thereof have the advantages that the sheath in the composite belt form replaces the traditional alloy sheath, good processability of the composite belt ensures processability of the composite solder flux-cored welding wire, and the problem that solder is hard to process into the flux-cored welding wire is solved.

The invention provides a high-temperature alloy which comprises the components such as C, Cr, Ni, Mo, Mn, Si, Nb, RE, N, Ti, B, Zr and the like, wherein the optimal content of each component is selected after reasonable analysis and repeated tests so that the components of the alloy realize the best interaction effect; and the tests prove that the high-temperature alloy provided by the invention is obviously superior to 25-20 steel and 316 steel in terms of average hardness, high-temperature oxidation resistance, high-temperature corrosion resistance and high-temperature washout resistance, and has good high-temperature comprehensive performance.

The invention discloses a sheath-coated flux-cored brazing wire and a production method thereof. The flux-cored wire is composed of an alloy sheath, sandwich wires and brazing flux, and is characterized in that compositions of the composite flux-cored wire are determined according to the proportion of the alloy sheath and the sandwich wires, the alloy sheath is 0.2-0.8mm in thickness, the sandwich wires are copper wires, brass wires and the like with the diameter phi of 0.02-0.2mm, and the brazing flux is potassium fluoroaluminate or cesium tetrafluoroaluminate complex, or a chemical compound which is synthesized from KF, AlF3 and CsF in an eutectic manner. When the novel wire is produced, sheath alloy is processed into an alloy strip 0.2-0.8mm in thickness and 6-16mm in width, the alloy strip is rolled into an U-shaped groove via a forming machine, the sandwich wires are put into the U-shaped groove, then the brazing flux is added, the diameter is reduced to phi 2.4-3.0mm after the wires and the brazing flux are synthesized to be O-shaped, diameter reducing is performed via a wire drawing machine unit, and the O-shaped product is fed into a wire rewinding machine to be produced into the novel sheath-coated flux-cored wire. The novel heath-coated flux-cored wire has the advantages that alloying effect of the alloy sheath and the sandwich wires is good during brazing, brazing seams are uniform in composition, joint strength is high, and the problem that part of high-performance brazing solder cannot be processed into the flux-cored wire easily is solved.

The invention relates to high-performance granular bainite rail steel and a production process, belonging to the technical field of metallurgical manufacturing. The high-performance granular bainite rail steel comprises the following raw materials in proportion: 0.19-0.28% of C, 1.20-1.70% of Si, 1.60-2.20% of Mn, 0.40-0.80% of Ni, 0.45-0.80% of Mo, not more than 0.018% of P, not more than 0.01% of S, not more than 0.20% of Cu, 1.20-1.80% of Cr, 0.04-0.18% of V and 92.362-95.02% of ingot iron. The production process of the high-performance granular bainite rail steel comprises the following steps of: (1) smelting at intermediate frequency to prepare electrode ingots; (2) remelting electroslag to prepare electroslag ingots; (3) carrying out hydrogen expansion on forgings; and (4) normalizing and tempering the forgings. The high-performance granular bainite rail steel has the advantages of reasonable proportion of chemical components, low manufacturing cost, good alloying effect, large forging ration change and favorable density of metal tissues; and each performance index of the product reaches or exceeds the levels of like products at home and abroad.

The invention discloses a high-reliability cathode component for a vacuum electron device, wherein the ruthenium-vanadium binary alloy high-temperature cored solder taking refractory metal tungsten and molybdenum as base materials consists of the following materials in weight percentage: 23 to 40 percent of vanadium, and the balance being ruthenium and inevitable micro impurities; and the contents of Zn, Pb, Bi and Mg elements in the micro impurities are no more than 0.001 percent respectively. The cored solder can be used to braze-solder refractory metal w, Mo and alloy of w or Mo in the H2 or Ar gas atmosphere or in a vacuum state, the cored solder does not absorb hydrogen, can spread over base metal, and has good wettability; the wet angle is less than 10 degrees; and when a soldering piece is soldered under the vacuum working condition with a temperature of between 1,000 and 1,200 DEG C, the vapor pressure of the cored solder is lower than 1x10<-5>Pa; moreover, the cored solder is low in price, and is the first choice of solder replacing the Pt and Pt-based solder for the braze solder of the cathode component for the vacuum electron device, and the melting temperature of the cored solder is between 1,750 and 1,850 DEG C.

The invention discloses a high-reliability cathode component for a vacuum electron device, wherein the ruthenium-niobium binary alloy high-temperature cored solder taking refractory metal tungsten and molybdenum as base materials consists of the following materials in weight percentage: 27 to 38 percent of Nb, and the balance being ruthenium and inevitable micro impurities; and the contents of Zn, Pb, Bi and Mg elements in the micro impurities are no more than 0.001 percent respectively. The cored solder can be used to braze-solder tungsten, molybdenum and alloy of tungsten or molybdenum in the H2 or Ar gas atmosphere and in a vacuum state; the cored solder does not absorb hydrogen, can spread over base metal, and has good wettability; the wet angle is less than 10 degrees; and when a soldering piece is soldered under the vacuum working condition with a temperature of between 1,000 and 1,200 DEG C, the vapor pressure of the cored solder is not higher than 1x10<-5>Pa; moreover, the cored solder is low in price, and is the first choice of solder replacing the Pt and Pt-based solder for the braze solder of the cathode component for the vacuum electron device, and the melting temperature of the cored solder is between 1,700 and 1,850 DEG C.

The invention discloses a microstructure and mechanical property testing method for ultrasonic shot peening induced nano-alloying. The testing method comprises the specific steps that first, a test technician writes test steps, grasps test matters needing attention and prepares test materials and equipment; second, Q235 steel plate samples are prepared and tested in groups, wherein the tests include that a, the Q235 steel plate sample 1 is maintained; b, the Q235 steel plate sample 2 is subject to ultrasonic shot peening under 30kHz power for 5min; c, Cr powder is added, and then the Q235 steel plate sample 3 is subject to ultrasonic shot peening under 30kHz power for 20min; d, Cr powder is added, and then the Q235 steel plate sample 4 is subject to ultrasonic shot peening under 30kHz power for 10min; and e, Cr powder is added, and then the Q235 steel plate sample 5 is subject to ultrasonic shot peening under 20kHz power for 10min; and third, a scanning electron microscope is utilizedto perform ray scanning on sample surface regions in the five tests performed in the second step respectively. The microstructure and mechanical property testing method for ultrasonic shot peening induced nano-alloying is simple, practical and convenient to operate, the obtained conclusion is representative, and the method is suitable for wide application and popularization.

The invention belongs to the technical field of alloy nanometer materials, and particularly relates to a method for preparing a copper-nickel alloy nanometer material with cutting-angle twin-cone morphology features in a hydrophobic phase. The method includes the steps of mixing copper salt, nickel salt, a complexing agent and an organic solvent to form mixed liquid, conducting thermal reaction after heating the mixed liquid, cooling to the room temperature after reaction to obtain reaction liquid, and washing the reaction liquid to obtain the finished product. The single-twin-crystal cutting-angle twin-cone copper-nickel alloy nanometer material with the special morphology features in the hydrophobic phase is prepared for the first time, and the limitation of the material morphology is reduced; the copper-nickel alloy nanometer material is simple in process and can be obtained only by mixing the organic solvent, a copper-nickel precursor and the complexing agent and conducting the heating reaction without oscillation, ultrasonic treatment and other reaction means, and the raw materials are easy to obtain; and the prepared single-twin-crystal cutting-angle twin-cone copper-nickel alloy nanometer material with the special morphology features can be used as a high-activity catalyst in coupling reaction and redox reaction.

The invention provides a method for preparing silicon vanadium nitride, and relates to the technical field of alloy smelting. The method has the advantages of low raw material cost, simple process route, short production time, and low equipment requirement, and can obtain silicon vanadium nitride products with higher nitrogen content and better alloying effects. The method comprises the followingsteps: S1, uniformly mixing a vanadium source, a silicon source and carbon powder for later use; and S2, calcining the mixed material obtained in S1 in a nitrogen atmosphere to obtain silicon vanadiumnitride. The technical solution provided by the invention is applicable to a preparation process of silicon nitride vanadium.

The invention discloses bainitic steel applied to a frog. The chemical compositions of the bainitic steel comprise, by weight, 0.03% to 0.05% of C, 0.3% to 0.5% of Si, 1.8% to 2% of Mn, no more than 0.007% of P, no more than 0.006% of S, no more than 0.0040% of N, 0.25% to 0.45% of Mo, 0.03% to 0.05% of Ti, 0.6% to 0.8% of Cr, 0.9% to 1.1% of Ni, 0.3% to 0.5% of Cu, 0.020% to 0.040% of V, 0.002% to 0.004% of B, 0.01% to 0.02% of Als, and the balance of iron and unavoidable impurities.

The invention relates to a method for smelting a high-purity nickel-molybdenum alloy. The high-purity nickel-molybdenum alloy comprises the following main components in percentage by weight: 8-30wt% of Ni, 10-30wt% of Mo, no more than 0.5wt% of Si, no more than 0.5wt% of C, no more than 0.1wt% of Cu, no more than 0.03wt% of P, no more than 0.03wt% of S and the balance of iron. According to the invention, the advantageous resource Mo in China is added in the known formula, and simultaneously, the process is improved to reduce the S (sulfur) and P (phosphorus) content, thereby ensuring that the high-purity nickel-molybdenum alloy completely achieves various performance indices of like products at home and abroad.

The invention discloses a production method of micro-alloyed gray cast iron for bearing caps. Firstly, the gray cast iron raw material is smelted in an electric furnace to obtain molten iron, and then molybdenum powder, vanadium powder and nano-silicon carbide doped alloy powder are added to the molten iron. The heat of the molten iron melts the doped alloy powder and is absorbed by the gray cast iron molten iron, so that the molten iron is subjected to microalloying treatment, and finally the microalloyed molten iron is poured to obtain the microalloyed bearing cap gray cast iron. The micro-alloyed bearing cover gray cast iron produced by the invention has both good cutting performance and impact resistance toughness, strong fatigue resistance and high durability, and is an excellent material for the bearing cover of an automobile engine.