14 results about "Carbide" patented technology

The invention discloses a manufacture method for a slip sheet of an air conditioner compressor, relating to the parts of air conditioner compressors. The method comprises the steps of: taking the elements in percentage by mass: C 3.2-3.8%, Si 2.0-2.6%, Mn 0.5-1.0%, Cr 0.2.-0.6%, Mo 0.1.-0.6%, V 0-0.5%, B 0-0.1%, Ti 0.04-0.15%, Nb 0-0.5%, Cu 0-0.5%, P < 0.3%, S <0.1% and the balance of Fe; and carrying out smelting, inoculating, casting, grinding, quenching and tempering heat treatment, refining, polishing and ion-sulfurizing to manufacture the slip sheet product of the air conditioner compressor. According to the product, a certain amount of carbides and flake graphite and a tempered martensite substrate with good comprehensive mechanical property are formed in a cast structure, and the manufacture method overcomes the defects of high cost and tedious machining procedures of the traditional high-speed steel or stainless steel slip sheets.

The invention discloses application of a two-dimensional transitional metal carbide nanosheet as a radionuclide adsorbent. Due to the fact that two-dimensional transitional metal carbide nanosheet MXene material has an absorption effect on radionuclide, the two-dimensional transitional metal carbide nanosheet can be utilized as the adsorbent for absorbing radionuclide.Compared with other inorganic nanometer adsorption material, MXene material, featuring a nano layered structure, can effectively increase adsorption capacity of radionuclide. In the meantime, storage space of the adsorbent is greatly reduced due to large density of MXene material.Accordingly, MXene material has potential application value in the field of irradiated fuel reprocessing, control over radioactive pollutants discharged by a nuclear power station, a hospital, a factory and others.

The invention relates to a solid waste-based baking-free environment-friendly hollow brick and a preparation method thereof, and belongs to the field of solid waste utilization environmental protection and the field of hollow bricks. Red mud, mineral powder, industrial by-product gypsum, fly ash, silica fume, aluminum ash, carbide slag, wastewater and other solid wastes and waste liquids are usedas main raw materials. The hollow brick comprises the raw materials in parts by mass: 35-50% of red mud, 30-45% of mineral powder, 10-20% of industrial by-product gypsum, 5-15% of a reinforcing agent,0.5-3% of a cementing agent and the balance of sewage or wastewater, wherein the reinforcing agent is prepared by mixing 15-23% of silica fume, 10-25% of aluminum ash, 20-30% of fly ash, 15-30% of carbide slag, 5-10% of zeolite powder and 5-15% of asphalt. Large-scale resource utilization of solid waste is achieved, the occupied area of the solid waste is reduced, environmental pollution is reduced, no natural mineral resources are consumed during preparation, multiple solid waste and waste liquid are used as main raw materials of the baking-free hollow brick, and the product has the advantages of high strength, low cost, environmental protection, energy conservation, simple and convenient process and easiness in popularization and application.

The invention discloses high-volume industrial solid waste composite Portland cement and a preparation method thereof. The high-volume industrial solid waste composite Portland cement is prepared fromthe following raw materials in parts by weight: 85-115 parts of cement clinker, 5-6 parts of modified desulfurized fly ash and 0.05-0.1 part of a grinding aid, wherein the cement clinker is preparedfrom the following raw materials in parts by weight: 95-95.9 parts of a fired cement raw material and 4.1-5 parts of coal ash; the cement raw material is prepared from the following raw materials in parts by weight: 42.5-45 parts of carbide slag, 15-17 parts of iron tailings, 5-6 parts of fly ash, 35-40 parts of limestone and 2 parts of iron ore powder. According to the invention, industrial solidwastes such as carbide slag, iron tailings, desulfurized fly ash and the like are fully utilized, so that the preparation of the high-volume industrial solid waste composite Portland cement is realized, the problems that the industrial solid wastes such as carbide slag, iron tailings, desulfurized fly ash and the like occupy a large amount of land resources and cause serious environmental pollution are solved, and the utilization rate of the industrial solid wastes is improved.

The invention discloses a method for preparing coarse granularity chromium carbide powder capable of simplifying the process, saving the energy consumption, improving the rate of qualified products ina milling process and well meeting requirements of preparation of wear-resistant, corrosion-resistant, high-temperature oxidation resistant novel materials in industries such as hard-face materials,flux-cored wires, high temperature alloys and the like. The method comprises the following steps: burdening chromium sesquioxide powder and carbon, and adding an adhesive to be uniformly mixed; molding with a press after uniform mixing; placing the molded material block in a high-temperature vacuum induction heating furnace graphite crucible, vacuumizing, performing power-on heating and raising the temperature, and maintaining the vacuum degree to be within 200-400Pa; carrying out a vacuum carbonation reaction between the chromium sesquioxide powder and carbon to produce chromium carbide, andcontrolling the carbonation reaction temperature to be 1350-1550 DEG C, wherein the carbonation reaction time is 8-15 hours; enabling the vacuum degree to be less than 100Pa, filling the furnace withargon after the carbonation reaction is completed, controlling the pressure in the furnace to be 40-80kPa, and increasing the heating power to melt the chromium carbide sintered body so as to obtain achromium carbide ingot; crushing the chromium carbide ingot into particles with the granularity of less than 10mm by using a mechanical method, milling by an impact crusher, and passing through a 60-mesh sieve, thereby obtaining the coarse granularity chromium carbide powder.

The invention discloses a guide guide-wheel for high-speed rolling. The guide guide-wheel comprises the chemical compositions of, by mass, 0.83%-0.92% of C, 12.6%-13.8% of Cr, 4.68%-5.32% of Ni, 0.95%-1.23% of Mo, 1.23%-1.35% of V, 0.22%-0.34% of Co, 0.2%-0.36% of W, 0.135%-0.146% of RE, 0.065%-0.120% of Nb, less than or equal to 0.33% of Si, less than or equal to 0.38% of Mn, and the balance Fe.After the guide-wheel is subjected to carbide refining treatment and final treatment after isothermal quenching and tempering, the surface contains a lot of carbides and has ultrahigh hardness; and after the guide-wheel is subjected to carbide refining treatment, isothermal quenching and cryogenic treatment, the abrasion loss is the minimum, the abrasion resistance is the highest, and the servicelife of the guide-wheel is several times higher than that of a guide-wheel subjected to conventional treatment.

The invention relates to a preparation method of medicinal active carbon. The dried bagasse is used as raw materials, and is crushed; then, the materials are added into a potassium carbonate solution to be soaked; the weight ratio of the bagasse to the potassium carbonate solution is 1:(4 to 7); the soaked bagasse is subjected to centrifugation dewatering; then, air isolation is performed for carbonization treatment; carbides are obtained; the carbides are subjected to acid washing by hydrochloric acid, and are then washed by water to a neutral state; finally, drying and sieving are performed. The medicinal active carbon has the advantages that the decoloring speed is high; the adsorption capability is high; the medical property of the medicine per se is not influenced. The bagasse is used as the raw materials; the resource waste and the environment pollution are avoided; the ecological environment protection is facilitated; in addition, the bagasse per se is a safe and nontoxic reproducible substance material; the product added value is high; good social and economic benefits can be generated.

The invention discloses a novel electrode material of a supercapacitor, wherein the novel electrode material of the supercapacitor is carbon carbide material/graphene oxide/chitosan. Polypyrrole composite is a kind of carbon/graphene oxide/chitosan composite under protective atmosphere. Polypyrrole composites are prepared by sintering and carbonization, and the carbonization temperature is 800 DEGC-900 DEG C. The supercapacitor of the invention comprises a supercapacitor, a connecting ring is slidably connected on the side wall of the supercapacitor, and the connecting ring can directly mountthe supercapacitors connected together on a circuit board for welding, the welding is more convenient, and the connecting ring can rotate. A long chain of that chitosan and the polypyrrole molecule are uniformly disper and loaded on graphene oxide and carbon material to form a three-dimensional open pore structure, which is favorable for the charged particles to diffuse to the electrode interface, has good cycle performance, wide work range, fast charging and the like, and has the advantages of larger specific surface area and more active sites.

The invention relates to a method for preparing carbonitride-silicide solid solution composite ceramic at a low temperature by a reaction hot pressing sintering technology, and belongs to the field of multiphase ceramic materials. The invention aims to solve the technical problems of poor sinterability and high-temperature performance of the existing multiphase ceramic. The method comprises the following steps: 1, mixing carbide powder, carbonitride powder and silicon powder, and carrying out ball milling to obtain composite powder; and 2, sintering the composite powder obtained in the step 1 to obtain the carbonitride-silicide solid solution composite ceramic. Fourth subgroup carbides and carbonitride capable of generating solid-phase exchange are selected, the solid-phase reaction and the solid-solution coupling synergistic process of original powder in the sintering process are fully utilized, an anion-cation dual solid solution or split-phase solid solution can be formed, and compared with a traditional means, the sintering temperature can be reduced by 300-500 DEG C. And the relatively low sintering temperature ensures that the material prepared by the method has a fine average grain size, and the strength and the hardness of the material are remarkably improved.

The welding wire comprises a flux core and a welding skin, the flux core is composed of, by mass, 1%-2% of graphene, 0.5%-0.7% of Si powder, 1%-3% of Mn powder, 60%-65% of Cr powder, 2%-3% of V powder, 2%-3% of B powder, 2%-3% of Ti powder, 1%-2% of CeO2 powder and the balance Fe powder, and the sum of the mass percentages of the components is 100%. The welding wire is specially used for arc surfacing repairing and remanufacturing of the mining scraper, the continuous service requirement can be met, and the production cost can be remarkably reduced. The invention further provides a preparation method of the welding wire for composite carbide reinforced scraper surfacing and a preparation method of a composite carbide reinforced scraper surfacing layer.