46results about How to "Does not reduce hardness" patented technology

The invention discloses a steel strip plated with composite film containing cobalt nanowires and a preparation method thereof. the steel strip of the invention uses a steel strip as the substrate, and the both sides of the steel strip are respectively plated with a multilayer composite film containing cobalt nanowires. The bottom layer of each multilayer composite film containing cobalt nanowiresis a micron crystalline nickle plating, the middle layer is a nickle composite plating containing cobalt nanowires and the surface layer is nanocrystalline nickle-cobalt alloy plating. The invention also provides the preparation method of the steel strip. The preparation method comprises the following steps: degreasing and activating a steel strip, adopting the direct current electroplating mode to prepare a micron crystalline nickle plating on the substrate, annealing, adopting the pulse electroplating mode to prepare a nickle composite plating containing cobalt nanowires on the nickle plating and then adopting the pulse injection mode to prepare a nanocrystalline nickle-cobalt alloy plating on the nickle composite plating containing cobalt nanowires. The steel strip is closely combined by the multilayer composite film containing cobalt nanowires and the low carbon steel strip, has good corrosion resistance, punching property and high load resistance and can be used as the shell material of the lithium ion power battery and high-performance alkaline Zn / MnO2 battery.

A conductive particle comprises a core particle and a conductive layer formed on the surface of the core particle. The core particle is formed from at least a resin or a metal. The surface of the conductive layer has a phosphorus-containing hydrophobic group.

The present invention relates to a coated cutting insert for metalworking, especially machining of low-chip materials, etc., comprising a tungsten carbide substrate having a binder-phase-rich surface region, having at least one rake face and at least one clearance face, intersecting Form the cutting edge. The binder phase-rich surface region is at least partially absent from the rake face comprising at least a portion of the surface extending from the cutting edge. The strength and wear resistance of the cutting edge can thus be optimized.

The invention relates to a composite and separable physical disinfection method and a device of barreled drinking water; full physical disinfection technology without any chemical sanitizing agent and any chemical preservative is utilized; a disinfection system consists of a forward series connection type ultrafiltration membrane filter system in a water production factory and backward series connection type ultraviolet radiation disinfection systems respectively set at all user ends; a disinfection safety automatic detection control device is also configured; more than 99.99 percent of viruses in the original water and more than 99.9 percent of other pathogenic microbes can be killed; more than 99.9 percent of generated reproduction bacteria caused by barrel wall stemming and water gas mixing during storage and transportation after the barreled drinking water is packed and during the operation can be killed; meanwhile, any disinfection by-product can not be generated; the drinking water of good quality and with remained quantity property can be obtained; the method can practically solve the problems that the disinfection by-product is generated in the current chemical technology and the current physical disinfection technology is short of disinfection durative and safety; the view having been generally recognized by the water production industry for a long time is changed that the physical disinfection technology cannot be used separately and can be combined with the chemical disinfection method; thus, the method of the invention has strong practicability.

A surface treatment agent for vulcanized rubber, comprising an organic solvent solution containing fluororesin particles in a ratio of 10-160 parts by weight with respect to 100 parts by weight in terms of solid content of a 1,2-polybutadiene containing an isocyanate group, the organic solvent solution using as a dispersing agent 2.5-20 parts by weight of a fluorine-containing surfactant based on an oligomer containing a perfluoroalkyl group. This surface treatment agent for vulcanized rubber has enhanced liquid stability of the organic solvent solution and enhances product torque evaluation and additional hardness and abrasion resistance overall in a coating film formed therefrom, and is effective for use as a coating agent or the like a seal lip part of an oil seal.

The invention provides a rubber composition which achieves higher silica dispersibility without lowering workability and hardness, while having excellently low fuel consumption properties; and a pneumatic tire which uses this rubber composition. A rubber composition which is obtained by blending 5-200 parts by mass of (B) silica relative to 100 parts by mass of (A) a diene rubber, 1-20% by mass of (C) a silane coupling agent relative to the silica, and 1-20% by mass of (D) a glycerol mono-fatty acid ester relative to the mass of silica, said glycerol mono-fatty acid ester being derived from a fatty acid having 8-24 carbon atoms. With respect to this rubber composition, 10 parts by mass or more in 100 parts by mass of the component (A) has a heteroatom-containing functional group in the main chain and / or at an end.

The invention discloses a special ceramic cutter material for circuit board powder or circuit board crushing and a preparation method thereof, belonging to the technical field of crushing equipment. The ceramic cutter uses whiskers as toughening material, tungsten carbide as base material, titanium carbide as wear-resistant agent, carbon as deoxidizer, chromium-containing compound, lanthanum oxide and cerium oxide as additives, and the above components are uniform After mixing, it is directly molded by hot pressing. After the raw materials are fully mixed, they are taken out and placed in the sample hot-pressing tank of the hot-pressing machine for direct hot-pressing. The pressure during hot-pressing is 10-40MPa, and the hot-pressing temperature is 1480-1600°C. The special tough ceramic cutter developed by the invention has good impact toughness, wear resistance and chemical stability, and simultaneously has high hardness. The tool material not only has a simple preparation process, but also has a production cycle much shorter than the conventional preparation method in which mixed raw materials are first pressed into shape and then sintered into shape. The cutter material is not only suitable for making special cutters for waste circuit boards / circuit board crushing equipment.

The invention relates to an agent for promoting fruit coloration of Nanguo pear. The agent is aqueous and dedicated for Nanguo pear, and can increase the 'red fruit' rate by regulating and controlling the synthesis and metabolism of anthocyanidin in Nanguo pear. The agent contains the following components: uniconazole 0.1g / L, sucrose 1g / L, potassium sulfate 1g / L, calcium chloride 3g / L, levulinic acid 0.1g / L, glutamic acid 1.0g / L, tyrosine 0.3g / L, phenylalanine 0.3g / L, boric acid 0.3g / L, Tween 100 1ml / L, and water in balance. The agent is prepared by the following steps: (1) respectively weighting uniconazole, sucrose, potassium sulfate, calcium chloride, levulinic acid, glutamic acid, tyrosine, phenylalanine, boric acid and Tween 100 at the given ratio; (2) respectively dissolving the materials in water, wherein uniconazole is dissolved with methanol; glutamic acid, tyrosine and phenylalanine are dissolves with distilled water at 100 DEG C; and potassium sulfate and calcium chloride are dissolved with distilled water at 50-70 DEG C; mixing after dilution; adding water until the desired concentration; and stirring thoroughly to obtain the final product. The agent can increase the 'red fruit' rate of Nanguo pear by 14%, and is convenient to use and harmless and innoxious to human body and environment.

The invention discloses a lightweight fixing bracket for a car engine and a car body. The lightweight fixing bracket comprises a bracket body, the bracket body is of an L-shaped structure, comprises an upper side face and a lower side face, and the upper side face is vertically connected with the lower side face; an installation hole and a stop rotating edge are further arranged on the bracket body, the installation hole is formed in the center of the upper side face in a penetrating mode, the stop rotating edge is arranged at one end of the upper side face, the stop rotating edge is perpendicular to the upper side face, a flanging is arranged on the edge of the bracket body, the flanging is vertically connected with the bracket body, an arc included angle is formed at the connection, andthe stop rotating edge and the convex ends of the flanging have the same orientation. The rigidity of the fixing bracket is improved, and the rotating following phenomenon during installation is prevented.

The invention relates to the field of an epoxy resin-based composite material, in particular to a method for modifying a nanometer carbon material to enhance an epoxy resin-based composite material. Hydrogen in carboxyl is replaced by ammonium ions by utilizing hydrolysis of rich O=C-O structural functional groups (such as carboxyl, anhydride and lactone) on the surface of a nanometer carbon material (such as nanometer diamond, a nanometer carbon tube and graphene) as well as the characteristic that an acidic carboxyl functional group is liable to react with ammonia water, so that the aim of modifying a specific nitrogen-containing group on the nanometer carbon material is fulfilled. The modification process is green and pollution-free, and the volatilized ammonia water can be effectivelycollected and recycled. The modified nanometer carbon material is compounded with the epoxy resin material; and compared with the epoxy resin-based composite material without adding the nanometer carbon material or added with the unmodified nanometer carbon material, the obtained composite material greatly improves the storage modulus under the conditions of not reducing hardness, breaking tenacity and tensile strength. The process is simple, economic, efficient and environmentally friendly, and the industrialization problem of the high-performance nanometer carbon material-epoxy resin composite material is solved.

The invention relates to the field of local annealing heat treatment of carburized parts and specifically relates to a local softening method of high-strength alloy steel carburized parts. The local softening method can be applied to manufacturing the carburized parts having different requirements on the hardness of the high-strength steel. A carburized locking pin is locally heated by use of fused salt in a salt-bath furnace; the locking pin is made of martensitic steel 16Cr3NiWMoVNbE; an annealing heat-protective fixture is adopted for performing heat protection on the carburized surface of the locking pin part, and the local annealing part is heated till a temperature above 600 DEG C for softening. The local softening method of the high-strength alloy steel carburized parts is capable of reducing the hardness of the flaring positions of the parts and preventing the parts from cracking in the flaring process under the condition of guaranteeing the hardness of the carburized surfaces. According to the local softening method, the method of rapid heating annealing by use of protective salt bath is adopted for performing annealing treatment on the gear locking pin, so that the high strength of the carburized surface and the base body of the part can be prevented from reduction, and the hardness of the portion needing to be deformed can be reduced, and as a result, the cracking problem in the flaring deformation process of the part is solved.

The invention discloses a fireworks lead conveying device. The fireworks lead conveying device comprises a driving wheel (1), a lead inlet guiding pipe (3), a lead outlet guiding pipe (4), a first roller (5) and a second roller (6), wherein a flexible conveyer belt (8) is mounted on the first roller (5) and the second roller (6) in a wrapping manner and partly wraps the periphery of the driving wheel (1); the lead inlet guiding pipe (3) is aligned with the wrapping inlet of the driving wheel (1) and the flexible conveyer belt (8), and the lead outlet guiding pipe (4) is aligned with the wrapping outlet of the driving wheel (1) and the flexible conveyer belt (8). The fireworks lead conveying device disclosed by the invention can maintain the quality of a lead and does not change the combustion efficiency of the lead.

The invention relates to a composite and separable physical disinfection device; full physical disinfection technology without any chemical sanitizing agent and any chemical preservative is utilized; a disinfection system consists of a forward series connection type ultrafiltration membrane filter system in a water production factory and backward series connection type ultraviolet radiation disinfection systems respectively set at all user ends; a disinfection safety automatic detection control device is also configured; more than 99.99 percent of viruses in the original water and more than 99.9 percent of other pathogenic microbes can be killed; more than 99.9 percent of generated reproduction bacteria caused by barrel wall stemming and water gas mixing during storage and transportation after the barreled drinking water is packed and during the operation can be killed; meanwhile, any disinfection by-product can not be generated; the drinking water of good quality and with remained quantity property can be obtained; the method can practically solve the problems that the disinfection by-product is generated in the current chemical technology and the current physical disinfection technology is short of disinfection durative and safety; the view having been generally recognized by the water production industry for a long time is changed that the physical disinfection technology cannot be used separately and can be combined with the chemical disinfection method; thus, the method of the invention has strong practicability.