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38results about How to "Achieve hardness" patented technology

Nanometer graphene reflection thermal insulation composite multifunctional ceramic coating layer and preparation method thereof

The invention discloses a reinforced alloy material; and a surface layer of the alloy material contains such elements as aluminum oxide, silicon dioxide and nanometer graphene. The alloy material is deeply extended on the basis of anodic oxidation, microarc oxidation and multi-component composite oxidation, and is a result under a complex effect of instant high temperature, multi-component composite oxidation liquid and nanometer penetrant through applying positive and negative high voltage, high current and positive and negative pulses by using unique structures, physical and chemical characteristics as ultrahigh hardness and high-temperature resistance, small size effects and surface and interface effects of such nanometer materials as nanometer graphene and nanometer silicon dioxide. The method comprises the steps of: (1) surface cleaning; (2) oxidation; and (3) penetration. The light alloy material after surface reinforcement by the method, in particular a combustion chamber of an internal combustion engine with fuel combustion consumption and generating a pollution source is prominent in reflection thermal insulation anti-carbon self catalysis function, and is higher in high-temperature erosion resistance and wear resistance.
Owner:四川鸿森达铝业科技有限公司

Traceable in-situ micro-nano indentation test instrument and method under variable-temperature working condition

The invention relates to a traceable in-situ micro-nano indentation test instrument and a traceable in-situ micro-nano indentation test method under a variable temperature working condition, and belongs to the technical field of precise instruments and material test. The macro-micro switching type mechanical loading module, the nano mechanical loading module and the press-in position optical positioning module are fixed on the gantry cross beam; the optical imaging axis of the optical microscopic in-situ observation / needle alignment module is coplanar with the loading axis of the nano mechanical loading module, the optical microscopic in-situ observation / needle alignment module and the function switching module are installed on the table top of the marble base, and the contact / atmosphere mixed temperature changing module is fixed to the function switching module. Modular design, a micro-nano indentation test instrument is used as a core; the multi-stage vacuum / atmosphere chamber, the press-in depth traceability calibration module and the multiple groups of optical microscopic imaging assemblies are combined to realize researches of press-in depth calibration under a variable temperature working condition, needle alignment of a nano mechanical loading micro-force sensor, accurate positioning of a press-in position, in-situ dynamic monitoring of micro-area mechanical properties and a damage mechanism of a test material in different dimensions and the like.
Owner:JILIN UNIV

Ion exchange resin modified polyvinylidene fluoride (PVDF) charcoal electrode and preparation method thereof

The invention relates to an ion exchange resin modified polyvinylidene fluoride (PVDF) charcoal electrode and a preparation method thereof. The ion exchange resin modified PVDF charcoal electrode is used for a fresh water treatment technology, and is prepared from activated charcoal powder, graphite powder, PVDF, ion exchange resin powder, organic solvent and the like. The prepared ion exchange resin modified PVDF charcoal electrode can adsorb ions in water by means of applied voltage, thereby efficiently removing salt in water; and the electrode has sufficient mechanical strength for bearingthe shearing force of water flow and favorable reversibility, thereby having a wide application range of raw water quality. The PVDF used as a binder can bind the activated charcoal powder and the graphite, the doping of the ion exchange resin powder can increase -SO3H and -OH on the electrode, and both the -SO3H and -OH are hydrophilic functional groups. The preparation process provided by the invention is simple and low in energy consumption, produces no byproduct, has no secondary pollution, and is low in treatment cost. The ion exchange resin modified PVDF charcoal electrode can perform electro-adsorption salt removal under normal temperature and normal pressure, and the salt removal rate is up to 90%. Thus, the invention can be used in the electro-adsorption water treatment field.
Owner:CHUTIAN HUATONG PHARM EQUIP CO LTD

Method for improving wear resistance and impact resistance of laser additive manufacturing alloy steel component

The invention belongs to the field of metal laser additive manufacturing, and particularly relates to a method for improving wear resistance and impact resistance of a laser additive manufacturing alloy steel component. The method is suitable for obviously improving the wear resistance and impact resistance of various alloy steel component laser additive materials. First, one, two or more powdersof Mo, TiC, B, Si, V, Cr, Ni and the like which have the same particle size as an alloy steel powder are adopted, are uniformly mixed for a certain proportion in the alloy steel powder through a ballmill, a laser deposition substrate is preheated, then laser deposition is performed in a vacuum glove box by using a synchronous powder feeding method, a laser deposition active area is covered with argon with a certain flow rate in the deposition process, and the substrate is heated and maintained by using induction, so that the compact deposited layer and timely controllable wear resistance andimpact resistance laser additive manufacturing can be realized. According to the method, an efficient and reliable novel technological method for improving the wear resistance and impact resistance ofthe laser additive manufacturing of the alloy steel component is provided, and the method has important significance for manufacturing the alloy steel component and the laser surface modification ofthe alloy steel component.
Owner:浙江翰德圣智能再制造技术有限公司

Cooling system for plastic corrugated pipe equipment

The invention discloses a cooling system for plastic corrugated pipe equipment. The cooling system for the plastic corrugated pipe equipment comprises a molding module cooling device which is arrangedon a molding module and a diameter fixing sleeve cooling device which is arranged on a diameter fixing sleeve, wherein the diameter fixing sleeve cooling device comprises a main pipeline assembly which is provided with a water channel and an air channel; the main pipeline assembly passes through an inner cavity of the diameter fixing sleeve in the axial direction; the inner part of the peripheralwall of the diameter fixing sleeve is provided with a diameter fixing sleeve cooling water channel; a plurality of diameter fixing sleeve water distribution pipe groups are connected between the diameter fixing sleeve cooling water channel and the main pipeline assembly; a plurality of air outlets which communicate with the air channel are formed in the tail end of the main pipeline assembly; andthe molding module cooling device comprises a molding module water cooling device and a molding module air cooling device. The inner wall and the outer wall of a corrugated pipe are cooled through the diameter fixing sleeve cooling device and the molding module cooling device, so that the inner wall and the outer wall of the corrugated pipe are quickly cooled, and the plastic corrugated pipe is further cooled through a corrugated pipe secondary air cooling device, so that the plastic corrugated pipe is quickly cooled, subsequent cutting is convenient to carry out, and the production efficiency of the plastic corrugated pipe is improved.
Owner:潍坊中云科研有限公司

Mouse feed for preventing and controlling mouse salmonella typhi infection as well as preparation method and application thereof

The invention relates to mouse feed for preventing and controlling mouse salmonella typhi infection. The mouse feed is prepared from the following raw materials according to the ratio of g/kg: 340 to390 parts of corn starch, 55 to 105 parts of resistant starch, 240 to 280 parts of fish meal, 80 to 100 parts of sucrose, 40 to 50 parts of soybean oil, 50 to 60 parts of wheat bran, 20 to 35 parts ofcompound mineral premix, 10 to 20 parts of multivitamin premix, 2 to 3 parts of DL-methionine, 2 to 3 parts of L-cystine, 1 to 2 parts of choline chloride, 1 to 2 parts of choline bitartrate and 20 to 50 parts of gelatin. The mouse feed provided by the invention has the effects of eliminating dampness and stopping diarrhea, and resisting bacteria and diminishing inflammation, and can be used forpreventing and controlling a salmonella typhi disease of a laboratory mouse; the problem that drug-resisting strains occur, caused by the fact that antibiotics are abused to prevent and control the salmonella typhi disease, is solved. The invention provides a green and safe dietetic therapy which has the advantages of simple requirements on equipment, remarkable effect, safety and no side effect,and is suitable for large-scale popularization and application.
Owner:TIANJIN UNIVERSITY OF SCIENCE AND TECHNOLOGY

Combined cycloid rotor and preparation method thereof

The invention relates to the field of machines, in particular to a combined cycloid rotor and a preparation method thereof. The combined cycloid rotor comprises an outer rotor body with an outer circle being provided with a tooth disc, and an inner cycloid rotor body matched in the molded line. The outer rotor body comprises the cylindrical outer circle. The tooth disc is arranged at the end face,close to the cylindrical outer circle, of the outer rotor body and formed by N sets of tooth crests and tooth troughs which are arranged alternately and distributed circumferentially and evenly. A groove is formed in the intersection of the tooth disc and the outer circle. An inner cavity of the outer rotor body is a cavity designed according to the pump flow requirement. The cavity is formed bycircumferentially and evenly distributing N tooth-shaped arcs and 2N transition arcs r. The inner rotor body comprises a cylindrical inner hole. The two ends of the cylindrical inner hole are providedwith chamfers facilitating assembling. An outline curve of the inner rotor body is a cycloidal curve conjugated with an inner cavity curve of the outer rotor body. The number of teeth of the cycloidal curve is one fewer than that of the outer rotor body.
Owner:山西东睦华晟粉末冶金有限公司

Preparation method of hybrid synergistically reinforced iron-based wear-resistant material

The invention belongs to the technical field of preparation and application of wear-resistant materials, and particularly relates to a preparation method of a hybrid synergistically reinforced iron-based wear-resistant material. In order to solve the problem about how to add Al2O3 and ZrO2 ceramics into a metal matrix through an advanced preparation method, adjust the proportion of Al2O3 and ZrO2, ensure uniform dispersion of Al2O3 and ZrO2 in the material at the same time and avoid direct contact of Al2O3 and ZrO2 so as to meet the requirement of heavy industry for wear resistance of mechanical equipment parts, the preparation method of the hybrid synergistically reinforced iron-based wear-resistant material is provided. According to the method, Al2O3 and ZrO2 in a proper proportion are uniformly added into iron-based alloy through the advanced preparation technology, high-quality combination of ceramic particles in the material and the metal matrix is ensured, and the volume ratio of Al2O3 to ZrO2 is optimized and adjusted under the condition of adding a certain amount of the ceramic particles according to the actual working conditions, so that the wear resistance of the mechanical equipment parts is further improved. The method is also of great significance to economic development and social development in China.
Owner:TAIYUAN UNIV OF TECH

Quenching oil capable of enabling screw to blacken automatically after quenched and quenching method thereof

The invention discloses quenching oil capable of enabling an screw to blacken automatically after quenched and a quenching method thereof. The invention belongs to the field of metal heat treatment technology. The quenching oil comprises the following components, by weight, 35-40 parts of refined base oil, 6-10 parts of cooling catalyzed composite agent, 0.4-0.6 parts of blackening composite agent, 0.3-0.7 parts of brightening agent, 0.4-0.7 parts of surface activating agent and 0.02-0.04 parts of antioxidant. The cooling catalyzed composite agent is a mixture of dialkyl naphthalene and petroleum sulfonate; the blackening composite agent the mixture of short oil alkyd resin, colouring agent and wetting agent; the brightening agent is the mixture of imidazoline oleate and methyl terpene resin; the surface activating agent is span-80. The colouring agent is disperse black 9; the wetting agent is fatty alcohol-polyoxyethylene ether. The best using temperature of the quenching oil is between 75 DEG C and 80 DEG C. Between 75 DEG C and 80 DEG C, the cooling speed of the quenching oil for the screw is moderate, the surface can be blackened automatically and a protective film can be formed while the quenching, so that the processes can be reduced and the efficiency can be improved.
Owner:马鞍山金泉工业介质科技有限公司

Method for preparing shell structure imitated steel-based coating on aluminium substrate

ActiveCN110643919APreventing the Kirkendall EffectImprove wear resistanceMolten spray coatingCarbide siliconAluminium matrix
The invention discloses a method for preparing a shell structure imitated steel-based coating on an aluminium substrate. The method comprises the following steps of first, laminating iron-aluminum alloy foil and stainless steel foil in sequence and spreading on the surface of the aluminium substrate, and placing in a high vacuum heating furnace for foil-substrate adhesive suction treatment to obtain a coating perform; and then preparing a steel bonded silicon carbidemetal ceramic layer on the surface of the coating perform from atomized stainless steel powder and granulated silicon carbide powder as raw materials by adopting a supersonic plasma dual-spraying technology, and bonding the stainless steel foil on the surface of the steel bonded silicon carbide metal ceramic layer, and obtaining a metal ceramic layer by adopting the dual-spraying technology, in such a way, and finally completing the preparation of the shell structure imitated steel-based coating on the aluminium substrate.The method has the advantages that the coating thickness control precision is high, the process stability and repeatability are higher, and the strong interface and the high performance of the shell structure imitated steel-based coating can be realized.
Owner:LANZHOU UNIVERSITY OF TECHNOLOGY

A kind of differential speed quenching device and process method of casting groove for mining scraper machine

The invention belongs to the technical field of ledge casting and particularly relates to a sectionalized differential quenching device and process method for a mine scraper blade machine casting ledge. The sectionalized differential quenching device for the mine scraper blade machine casting ledge comprises water pumps and a water trough. A waterpower hole plate is arranged in the water trough, water outlet holes are evenly distributed in the waterpower hole plate, and a plurality of supporting strips are arranged on the waterpower hole plate. The waterpower hole plate divides the water trough into an upper layer and a lower layer. The lower layer of one side wall of the water trough is provided with at least one water inlet, and each water inlet is correspondingly connected with one water pump. The upper layer of the side wall of the water trough is provided with a water outlet, and a water level adjusting device is arranged at the position of the water outlet. The sectionalized differential quenching device for the mine scraper blade machine casting ledge is convenient to operate, the process is advanced and reasonable, the ledge performance is improved, meanwhile, the quenching temperature is improved, the temperature keeping time is shortened, grains are refined, the production efficiency is improved, and the electric energy is saved.
Owner:山西煤矿机械制造股份有限公司

Nano graphene reflective heat insulation composite multifunctional ceramic coating and preparation method thereof

The invention discloses a reinforced alloy material; and a surface layer of the alloy material contains such elements as aluminum oxide, silicon dioxide and nanometer graphene. The alloy material is deeply extended on the basis of anodic oxidation, microarc oxidation and multi-component composite oxidation, and is a result under a complex effect of instant high temperature, multi-component composite oxidation liquid and nanometer penetrant through applying positive and negative high voltage, high current and positive and negative pulses by using unique structures, physical and chemical characteristics as ultrahigh hardness and high-temperature resistance, small size effects and surface and interface effects of such nanometer materials as nanometer graphene and nanometer silicon dioxide. The method comprises the steps of: (1) surface cleaning; (2) oxidation; and (3) penetration. The light alloy material after surface reinforcement by the method, in particular a combustion chamber of an internal combustion engine with fuel combustion consumption and generating a pollution source is prominent in reflection thermal insulation anti-carbon self catalysis function, and is higher in high-temperature erosion resistance and wear resistance.
Owner:四川鸿森达铝业科技有限公司
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