60results about How to "Suppressor enrichment" patented technology

A method of continuous annealing / hot-dipping using a hot-dipping apparatus having an annealing furnace in which a silicon-containing steel sheet is hot-dipped. In this method, the silicon contained in the steel is caused to undergo internal oxidation without undergoing surface oxidation to thereby avoid a decrease in deposit adhesion to the steel and a delay in galvannealing. Also provided is the apparatus for use in this method. The method of continuous annealing / hot-dipping employs an annealing furnace having a former heating zone, latter heating zone, heat retention zone, and cooling zone in this order and a hot-dipping bath. It comprises conducting annealing under the following conditions. In regions where the steel sheet has a temperature of at least 300 DEG C, the steel sheet is heated or kept hot by means of indirect heating. The atmosphere inside the furnace in each zone is an atmosphere consisting of 1-10 vol.% hydrogen and, as the remainder, nitrogen and unavoidable impurities. In the former heating zone, the steel is heated to a maximum temperature of 550-750 DEG C and the atmosphere is regulated so as to have a dew point lower than -25 DEG C. In the subsequent latter heating zone and heat retention zone, the dew point is regulated to from -30 DEG C to 0 DEG C. In the cooling zone, the dew point is regulated to below -25 DEG C.

A spring steel wire rod according to the present invention is a spring steel wire rod wherein: the spring steel wire rod contains C: 0.35% to 0.7% (by mass, the same is hereunder applied), Si: 1.5% to 2.50%, Mn: 0.05% to 1.0%, Cr: 0.05% to 1.9%, Cu: 0.05% to 0.7%, Ni: 0.15% to 0.8%, P: 0.02% or less (excluding 0%), S: 0.02% or less (excluding 0%); and the balance being Fe and unavoidable impurities, wherein the ratio of Si to Cu (Si / Cu) is in the range of 4 or more; and the difference between the concentration of Cu in the surface layer and the concentration of Cu in the steel is 0.50% or less and the difference between the concentration of Ni in the surface layer and the concentration of Ni in the steel is 1.00% or less. The present invention makes it possible to improve pickling performance in a spring steel wire rod containing Si abundantly and further Cr, Cu, and Ni.

The invention discloses a solid oxide fuel cell cathode material and a preparation method thereof, which is characterized in that the cathode material is a perovskite oxide and an oxide MO2 (M=Ti, Zr) modified on the surface of the perovskite oxide , Nb, Ce, Ru, Sn) composite cathode. Wherein, the mass content of the oxide MO2 in the composite cathode is 1%-20%, the particle size of the oxide MO2 is 0.5-100 nanometers, and the oxide MO2 in the composite cathode is coated on the surface of the perovskite oxide. The perovskite oxide can be preferentially prepared on the surface of the electrolyte or separator of the battery by coating method, screen printing, casting method, etc., and then the oxide MO2 Modification of perovskite oxide surfaces in cathodes. The cathode material of the invention shows excellent electrochemical performance and good stability.

The invention discloses a high-temperature fuel cell cathode and a preparation method thereof. The high-temperature fuel cell cathode is characterized in that a cathode material comprises a body layerand a modified layer, the body layer is perovskite oxide, the modified layer is a composite oxide comprising the perovskite oxide and a fluorite oxide, the mass ratio of the perovskite oxide to the fluorite oxide is 20%-80%, the particle size of the composite oxide of the modified layer is 0.5 to 300 nanometers, and the modified layer coats the surface of the body layer. The body layer can be preferentially prepared on the surface of an electrolyte or a separator of a battery by a coating method, a screen printing method, a tape casting method, and the like, and then the modified layer can beprepared onto the surface of the body layer by solution impregnation, sol-immersion, magnetron sputtering, or other method. The cathode material exhibits excellent electrochemical performances and good stability.

A method of continuous annealing / hot-dipping using a hot-dipping apparatus having an annealing furnace in which a silicon-containing steel sheet is hot-dipped. In this method, the silicon contained in the steel is caused to undergo internal oxidation without undergoing surface oxidation to thereby avoid a decrease in deposit adhesion to the steel and a delay in galvannealing. Also provided is theapparatus for use in this method. The method of continuous annealing / hot-dipping employs an annealing furnace having a former heating zone, latter heating zone, heat retention zone, and cooling zone in this order and a hot-dipping bath. It comprises conducting annealing under the following conditions. In regions where the steel sheet has a temperature of at least 300 DEG C, the steel sheet is heated or kept hot by means of indirect heating. The atmosphere inside the furnace in each zone is an atmosphere consisting of 1-10 vol.% hydrogen and, as the remainder, nitrogen and unavoidable impurities. In the former heating zone, the steel is heated to a maximum temperature of 550-750 DEG C and the atmosphere is regulated so as to have a dew point lower than -25 DEG C. In the subsequent latter heating zone and heat retention zone, the dew point is regulated to from -30 DEG C to 0 DEG C. In the cooling zone, the dew point is regulated to below -25 DEG C.

The invention discloses a seedling raising greenhouse and belongs to the field of planting device. The seedling raising greenhouse comprises supporting columns inserted and buried in soil, a roof, a sun-shading layer and an automatic water supply system. The supporting columns are distributed on the periphery of seedling raising land. The upper ends of the supporting columns are connected with theroof, spraying pipes are installed on the roof, spraying heads are arranged on the spraying pipes, and the spraying pipes are connected with a first water pump through a first pipeline. The sun-shading layer is a sun-shading net, is arranged under the roof and is parallel to the seedling raising land. The automatic water supply system comprises a second water pump, a second pipeline and water spraying pipes, wherein one end of the second pipeline is connected with the water spraying pipes, the other end of the second pipeline is connected with the second water pump, the water spraying pipes are laid in the seedling raising land, atomizing spray heads are arranged on the water spraying pipes, the first water pump is connected with an impounding reservoir, the second water pump is connectedwith the impounding reservoir and a pesticide and fertilizer pond. The seedling raising greenhouse can quickly and effectively control the temperature, humidity and lighting intensity in the greenhouse and can also provide sufficient nutrients for seedlings in the seedling raising greenhouse and effectively prevent and control diseases and pests.