38results about How to "High molybdenum content" patented technology

The invention relates to a low-nickel aging strengthening type iron-nickel based corrosion resistant alloy. The alloy is prepared from the following components in percentage by weight: 36.0-42.0 percent of Ni, 19.0-25.0 percent of Cr, 3.0-6.0 percent of Mo, 1.0-3.50 percent of Cu, 1.5-3.0 percent of Ti, 0.2-0.6 percent of Al, less than or equal to 0.5 percent of Nb, less than or equal to 0.03 percent of C, less than or equal to 0.5 percent of Si, less than or equal to 0.5 percent of Mn, less than or equal to 0.0010 percent of S, less than or equal to 0.005 percent of P, 0.01-0.6 percent of trace elements and the balance of Fe. The alloy has high strength, high toughness and high corrosion resistance of existing iron-nickel based alloy. Compared with existing iron-nickel based alloy, the alloy has the advantages of better thermal processing performance and lower cost.

The invention relates to an interalloy for smelting. A vacuum aluminium-molybdenum-silicon alloy, is charactrized in that the alloy has close structure without slag inclusion and segregation, comprising, based on weight percentage, Mo of 40-63%, si of 4.0-5.0%, O of not more than 0.015%, H of not more than 0.002%, N of not more than 0.006%, C of not more than 0.06%, Fe of not more than 0.10%, and the residual is Al. The invention solves the technical problem that the non-vacuum aluminium -silicon alloy has segregation, slag inclusion, high content gas impurity without close structure, secondly solves the technical problem of low content of molybdenum in the alloy.

The invention provides high-performance cold extrusion die steel and metallurgical manufacturing method thereof. The high-performance cold extrusion die steel comprises the following chemical components in percentage by mass: 0.95 to 1.02 percent of C, 0.20 to 0.40 percent of Mn, 8.60 to 9.00 percent of Cr, 0.87 to 1.10 percent of Si, 1.80 to 2.00 percent of Mo, 0.40 to 0.60 percent of V, less than or equal to 0.30 percent of Cu, less than or equal to 0.25 percent of Ni, less than or equal to 0.025 percent of P, less than or equal to 0.010 percent of S, and the balance of Fe and inevitable impurities. According to the component proportion, the toughness performance of the high-performance cold extrusion die steel can be greatly improved. The metallurgical manufacturing method comprises theprocesses of electric furnace steel making, electroslag remelting and steel forging by a radial forging press. In the process of electroslag remelting, the voltage is between 57 and 59V, and the current is between11,000 and 12,000A; and in the process of steel forging by the radial forging press, steel ingots are heated to between 1,150 DEG C and 1,170 DEG C, and the temperature keeps for 2 to 4hours. The method is simple and convenient, and can remarkably improve the performance index of the steel.

Thie invention relates to a novel asymmetrical, secondary dialkylamine-based molybdenum dithiocarbamate with improved friction reducing performance, viscosity and solubility, and lubricating compositions containing the same. The compounds are produced from asymmetrical dialkylamine of the formula R1-NH-R2 where R1 and R2 are different, and are independently selected from alkyl groups C3 to C19. In a preferred embodiment, R3 and R4 are different and are independently selected from alkyl groups C3 to C19. The molybdenum dithiocarbamates can be represented by the following formula:

The invention discloses high-temperature-resistant silicon molybdenum ferrite nodular cast iron for a steam turbine and a preparation technology therefor. The nodular cast iron comprises components: 3.0-3.5% of C, 2.8-3.2% of Si, less than 0.2% of Mn, less than 0.040% of P, less than 0.015% of S, 0.5-0.8% of Mo, less than 0.010% of Re, 0.040-0.055% of Mg, and 0.004-0.007% of Sb, the balance being iron and residual elements. The preparation technology comprises furnace charge matching; intermediate frequency induction furnace fusing; spheroidizing and addition of first inoculation ferrosilicon; control of contents of elements; pouring into a pulling runner box for secondary inoculation; casting moulding. The obtained nodular cast iron has good combination properties and a low cost, the nodularity reaches more than 80% of the nodularity prescribed by GB/T9441-2009 nodular cast iron metallographic examination, the ferrite amount is more than 90%, and normal temperature and high temperature mechanical properties meet production requirements.

The invention discloses a preparation method of a molybdenum-sulfur complex lubricating oil additive with high molybdenum content. The preparation method comprises the following steps: I, preparing a mixed liquid A from a hexavalent molybdenum compound, a sulfur-containing compound and distilled water, and then adjusting a pH value; II, adding dialkyl amine into the mixed liquid A which is subjected to pH value adjustment, then stirring, and then adding a phase transfer catalyst to obtain a mixed liquid B; III, under the protection of a nitrogen atmosphere, dropwise adding carbon disulfide into the mixed liquid B to obtain a mixed liquid C; and IV, standing the mixed liquid C till the mixed liquid C is layered, removing a water phase, washing an organic phase by virtue of an alkaline solution and an organic solvent, then distilling, and drying to obtain the high-molybdenum-content molybdenum-sulfur complex lubricating oil additive of which the mass percentage content of molybdenum is not less than 10%. The preparation method disclosed by the invention is simple in preparation process, and is favorable for industrial production; and the prepared molybdenum-sulfur complex lubricating oil additive has relatively high molybdenum content and good oil solubility, and after the additive is added into lubricating oil, the anti-wear and friction reduction properties of the lubricating oil can be greatly improved.

The invention discloses a high-strength high-tenacity alloy cast steel material used for draw gears of railway vehicles. The alloy caste steel material is composed of, by weight, 0.14-0.20 part of C, 0.20-0.40 part of Si, 0.90-1.20 parts of Mn, 1.00-1.20 parts of Cr, 0.60-0.90 part of Ni, 0.20-0.40 parts of Mo, 0-0.030 part of S, 0-0.030 part of P and the balance Fe and inevitable impurities. According to the alloy caste steel material, the yield strength is equal to or larger than 800 MPa, the tensile strength is equal to or larger than 920 MPa, the elongation is equal to or larger than 14%, the percentage reduction of area is equal to or larger than 40%, and the ballistic work at the temperature of-40 DEG C is equal to or larger than 35 J.

The invention discloses a water-soluble minimum quantity lubricating liquid containing MoS2. The lubricating liquid comprises the following components in percentage by weight: 2-20% of nano MoS2, 10-30% of a lubricant, 1-5% of a dispersing agent, 2-20% of a surfactant, 0.05-0.5% of a defoaming agent, 0.05-5% of a preservative, 0.05-5% of a descaling agent, 1-5% of an antirust agent and the balanceof deionized water, wherein the sum of the weight percentages of the nano MoS2 and the nano cubic boron nitride is 3-30%; the particle size distribution of the nano MoS2 is 20-150nm, the average particle size is 50-80nm, and the specific surface area is 50-150 m<2>/g; the particle size distribution of the nano cubic boron nitride is 50-200 nm, and the average particle size is 70-80 nm. The lubricating liquid has the characteristics that molybdenum disulfide is small in particle size and uniform in distribution, precipitation, blockage and other faults are not likely to be formed, fog drops can be efficiently formed, the molybdenum content in the lubricating liquid is high, and the lubricating effect is good.

The invention discloses a chemical nickel-plating-molybdenum-phosphorus alloy solution for preparing a high molybdenum and high phosphorus coating. The problem that an existing chemical nickel-plating-molybdenum-phosphorus alloy solution cannot simultaneously prepare a coating with high Mo and P contents is solved. The chemical nickel-plating-molybdenum-phosphorus alloy solution comprises nickel sulfate, sodium hypophosphite, sodium molybdate, sodium citrate, propionic acid, sodium tetraborate, sodium acetate and saccharin; and the PH is 8.0-8.5, and the plating solution temperature is 75-80 DEG C. The deposition rate of the coating is required to be controlled at 5-8 microns per hour. The results of scanning electron microscopy showed that the contents of molybdenum and phosphorus are higher in the coating prepared by the chemical nickel-plating-molybdenum-phosphorus alloy solution. The chemical nickel-plating-molybdenum-phosphorus alloy solution can be widely used in the field whichboth the thermal stability and amorphous structures are required and a chemical nickel-plating-molybdenum-phosphorus coating is used as a diffusion impervious layer in electron industries.

The invention relates to an ageing strengthening type iron nickel base corrosion resistant alloy easily processed into a thick-walled seamless tube. The alloy comprises the following components by weight percent: 40-45% of Ni, 20-25% of Cr, 2-5% of Mo, 1-3% of Cu, 1.5-3% of Ti, 0.1-0.5% of Al, 0.01-0.5% of V, 0.001-0.05% of Zr, 0.001-0.005% of B, 0.005-0.05% of Mg, 1.0% or less of Nb, 0.05% or less of C, 0.5% or less of Si and 0.5% or less of Mn, with the balance being Fe. According to the alloy, the hot working plasticity of the alloy can be improved, the heat checking tendency during the hot working process is reduced, the strength is high, the toughness and plasticity are good, the corrosion resistance is good, and the comprehensive performance is good.

The invention discloses a high-strength steel submerged-arc stranded wire. The high-strength steel submerged-arc stranded wire comprises the following components of, by mass percentage, 0.08-1.2% of carbon, 0.4-0.8% of manganese, 0.05-0.1% of copper, 0.1-0.2% of nickel, 0.1-0.2% of zirconium, 0.11-0.18% of silicon, 0.02-0.08% of molybdenum, 0.01-0.02% of titanium, 0.2-0.4% of boron, less than 0.01% of phosphorus, not larger than 0.005% of sulfur and the balance iron and inevitable impurities. The invention discloses a welding method of the high-strength steel submerged-arc stranded wire. The welding method comprises the steps that a steel plate to be welded is pretreated, then the inner side welding and the outer side welding are carried out, and then heating, heat preservation and air cooling are carried out. A welding seam formed by welding has the beneficial effects of being good in low-temperature impact toughness, low in yield ratio, high in strength, attractive in forming and thelike; and moreover, the welding spatter is small, and the welding process performance is excellent.

The invention discloses a non-water-soluble minimal quantity lubricating liquid containing MoS2. The lubricating liquid comprises 2-15 wt% of nanometer molybdenum disulfide, 1-10 wt% of nanometer cubic boron nitride, 10-30 wt% of modified vegetable oil, 1-5 wt% of a dispersing agent, 2-20 wt% of a surfactant, 0.05-0.5 wt% of a defoaming agent, 0.05-5 wt% of a preservative, 0.05-5 wt% of a descaling agent, 1-5 wt% of an antirust agent, and the balance of an organic solvent. The molybdenum content in the lubricating liquid is high, and the hexagonal boron nitride and the nano-MoS2 particles canform a synergistic effect to achieve the good lubricating effect; and the degradable modified vegetable oil is used for replacing mineral oil, so the service life is long, and environmental protectionis achieved.

The invention discloses a carbon quantum dot-doped foamed nickel-molybdenum alloy and a preparation method thereof. The method comprises the following steps: (1) preparing a part of electroplate liquid for electrodeposition of the foamed nickel-molybdenum alloy according to a known formula; (2) preparing a glucose carbon quantum dot solution by adopting a glucose hydrothermal method; (3) freezing and drying glucose carbon quantum dots into a carbon quantum dot solid, grinding the carbon quantum dot solid into carbon quantum dot powder, and adding the carbon quantum dot powder into the solution obtained in the step (1) to obtain an electro-deposition solution; (4) using nickel and molybdenum as anodes, foamed nickel as a cathode, placing the anodes and the cathodes in the electro-deposition solution, and performing electro-deposition in a single-cathode and double-anode mode; and (5) heating the solution to 35-55 DEG C, and carrying out electro-deposition under the condition that the apparent cathode current density is 110-130 mA/cm<2>. The foamed nickel-molybdenum alloy doped with the carbon quantum dots prepared by the method has the beneficial effects of good plating quality, good hydrogen evolution effect, high stability and high molybdenum content.

The invention discloses a method for planting rapeseed, adding an aqueous solution containing sodium selenite and the concentration of the solution during germination, not only can selenium-enriched rapeseeds be selected by drying, but also the accumulation of selenium in rapeseeds can be increased. And can kill some pathogenic microorganisms wherein, described thinning and topdressing are beneficial to the growth that improves rapeseed seedling, and can improve the output of field, described rapeseed flowering period molybdenum fertilizer, potassium dihydrogen phosphate, boron fertilizer, water are mixed evenly Spraying the rape leaves can not only prevent the rape leaves from turning yellow and the flower buds fall off, but also increase the molybdenum content of the rapeseed grains. The rapeseed in the early flowering stage can prevent and control sclerotinia and aphids with trimethazine and aphids. The rapeseed planted by this planting method has the advantages of high germination rate and high yield, and has huge market potential and broad prospects.

An X-ray tube includes: an envelope that is a case; a cathode assembly that emits electrons in the envelope; and an anode including a first member of which at least a portion extends to the outside of the envelope, a second member that is provided in a direction perpendicular to a central axis of the first member, comes into contact with the first member, and has a higher X-ray shielding performance than the first member, and a target that receives the electrons emitted from the cathode assembly and generates X-rays.

The invention discloses a hydrogenation catalyst, a preparation method and an application method thereof. It uses organic phosphonic acid and molybdenum source as reaction raw materials, utilizes the reaction of the two, and bonds the two together to prepare a hydrogenation catalyst. Among them, the inventors found for the first time that P in the organic phosphonic acid can change the surface acidity of the active phase, increase the surface acidity of the hydrogenation catalyst after sulfidation, and the increase in acidity helps to enhance the hydrogenation activity of the hydrogenation catalyst; in addition, the presence of P has It helps stabilize asphaltenes, thereby inhibiting asphaltene condensation and coking, thereby reducing the amount of coke, slowing down catalyst deactivation, and finally reducing the coking rate and increasing the hydrogenation yield. At the same time, it is also found that the presence of P helps to change the structure of the active phase in the hydrogenation catalyst, which can reduce the amount of molybdenum with a tetrahedral structure that is difficult to vulcanize, and increase the amount of molybdenum with an octahedral structure that is easy to sulfide, which in turn facilitates the sulfuration of molybdenum. In the process, it is converted into molybdenum disulfide with suitable stacking layers, thereby increasing the activity of the hydrogenation catalyst and increasing the hydrogenation yield.

The invention discloses an oil-soluble molybdenum caprylate catalyst as well as a preparation method and application thereof. The prepared molybdenum caprylate catalyst is good in dispersity and high in active metal content, can be used for hydro-conversion of inferior heavy oil, residual oil, oil sand and asphalt, can also be used for coal/oil co-refining, and can effectively inhibit coke formation in the reaction process and guarantee long-period operation of a device.