30results about How to "Increase hardening" patented technology

The invention relates to a high-temperature polyurea lubricating grease composition and a preparation method thereof. The high-temperature polyurea lubricating grease composition comprises 5-20% of thickener, 80-95% of base oil, 0.05-3.5% of anticorrosive agent, 0.5-10% of rust inhibitor, 0.05-5% of high-temperature improver and 0.1-4% of antioxidant. The preparation method comprises the following steps: adding part of base oil into a reaction kettle, adding diisocyanate, heating to 40-90 DEG C, adding mixed amine, and carrying out thermostatic reaction at 100-140 DEG C for 30-100 minutes; after the reaction finishes, adding a structure improver, heating to 160-195 DEG C, cooling to 120-170 DEG C with base oil in the reaction kettle, naturally cooling, and adjusting to a proper thickness; and cooling to 60-90 DEG C, and adding the additive components. The high-temperature polyurea lubricating grease provided by the invention does not soften or has low softening tendency at 100-120 DEG C, and has greatly improved hardenability at the high temperature of 180 DEG C.

A vehicle window lifting motor capable of overload protection relates to the technical field of motors. The motor includes a connector. An inner wall of the connector is provided with uniformly distributed clamping grooves, an output shaft is connected on a middle part of the connector in a clamped manner, and evenly distributed fixed columns are fixedly connected on an inner wall of the output shaft. In the vehicle window lifting motor capable of overload protection, clamping blocks and the clamping grooves are used in a cooperative manner, the clamping blocks are connected with the clampinggrooves in a clamped manner in an initial state, and the connector is enabled to be connected with the output shaft in a clamped manner; when the rotating output shaft suddenly stops, a limiting blockmoves towards a front side due to centrifugal force, an electrically conductive sheet is driven to move toward the front side, the electrically conductive sheet is separated from a rheostat, a circuit for suspending liquid is disconnected, the suspending liquid is turned into fluid, the clamping blocks are squeezed into the output shaft under the action of the clamping grooves, piston blocks moveto both sides under the action of the suspending liquid to make the output shaft idle, thus overload protection can be achieved, overload use of the motor can be prevented, and service life of the motor is prolonged.

The invention provides a steel material acid-washing and phosphorization method, wherein phosphorization film protection is provided for a matrix metal after acid washing so as to prevent the metal from re-corrosion, the method can be used for priming before painting so as to improve adhesion and corrosion resistance of the paint film layer, the friction reduction lubrication effect is provided during a metal cold processing process, and saponification is provided after phosphorization so as to substantially increase the protection performance of the phosphorization solution phosphorization film. According to the present invention, the multi-step quality and concentration increasing hydrochloric acid solution acidification treatments are provided so as to remove oil stains and rusts on the steel material surface, save acid solution consumption and provide the smoothness of the treated surface; and energy source saving is easily achieved with normal temperature soaking, and the single-step acid soaking time is shortened so as to achieve prevention of occurrence of hydrogen embrittlement on the basis of energy source saving.

The invention discloses a high-frequency pulse current assisted surface shot blasting reinforcement machining device. The device is characterized by consisting of a surface shot blasting reinforcement device and a pulse power supply device; the surface shot blasting reinforcement device comprises a shot blasting chamber, a shot blasting mechanism mounted on the shot blasting chamber and used for blasting shots into the shot blasting chamber, and a workpiece clamping mechanism arranged in the shot blasting chamber and used for fixing workpieces; and the pulse power supply device is connected to the workpieces during shot blasting to apply pulse current on the workpieces. The invention further discloses a high-frequency pulse current assisted surface shot blasting reinforcement machining method; the method uses an electroplastic effect of high-frequency pulse current to improve the surface plasticity of such aviation parts as titanium alloys and aluminum alloys, to reduce the hardness, to improve the surface shot blasting reinforcement effect of the parts and to improve the wear resistance and the fatigue intensity of the aviation parts.

The invention provides a preparation method of kiwi fruit powder. The preparation method includes the steps that after kiwi fruits are subjected to vacuum freeze drying in a vacuum freeze drying device, seed-pulp separation is carried out in a low-temperature seed-pulp separation device; vacuum freeze drying specifically includes the procedures that a temperature probe is placed in a sample disc containing the kiwi fruits, quick freezing is carried out on the kiwi fruits, the refrigeration rate is reduced to range from -20 DEG C to -30 DEG C from the room temperature of +25 DEG C, operation is completed within 2-3 hours, the kiwi fruit slices are frozen, the state is kept for 30 min to 2 hours, and then lyophilization is carried out; obtained pulp is smashed in a low-temperature pulp low-speed smasher, and the kiwi fruit powder is obtained. The method is simple in preparation process, and the content of vitamin C in the kiwi fruits can be reserved to the maximum degree.

The invention belongs to the field of rubber tire manufacturing, and discloses a snow tire, a snow tire tread rubber composition and a rubber composition mixing method. The snow tire tread rubber composition comprises in parts by weight: 100 parts of a rubber component, 35-55 parts of liquid polybutadiene rubber, and 70-90 parts of silica, wherein the mass percentage of the liquid polybutadiene rubber is 13% or more in the total composition. The liquid polybutadiene rubber is introduced into the composition, the plasticizing property of the liquid polybutadiene rubber is utilized, a part of environment-friendly oil is replaced by the liquid polybutadiene rubber, the oil content in tread rubber is reduced, and the liquid polybutadiene rubber has a relatively low glass transition temperature, so that effects of low hardness, low modulus, and low low-temperature hardening degree of the tread rubber can be achieved when a relatively large amount of the liquid polybutadiene rubber is used for filling.

A photosensitive composition comprising: (A) a sensitizing dye selected from the group consisting of compounds represented by formulae (1) and (2) defined herein; (B) an initiator compound capable of generating a radical, an acid or a base; and (C) a compound capable of changing irreversibly its physical or chemical property with at least one of a radical, an acid and a base.

The invention relates to a preparation method of kiwifruit shaped crisps. The method comprises the following steps: selection and cleaning of fruits, peeling and placement in dishes, refrigeration and pre-freezing, micro-unfreezing and quick-freezing, sublimation and drying, and balancing and packaging in boxes. The preparation method of kiwi berry fruit shaped crisps employs whole fruits or hemi fruits of kiwifruit as raw materials for drying; the product presents intrinsic goods values of kiwi berries, eating and ingestion of kiwi berry natural vitamins in different seasons are facilitated, and a series of unsolved problems of hard sublimation of drying moisture in whole fruits or hemi fruits of kiwi berries in prior drying methods of kiwi berries, energy consumption of long time or repeat freeze-drying, easy charring, hard reduction of quality of fresh fruits, and the like are solved; the original shapes of naked fruits of kiwi berries are kept, original flavours of kiwi berries are kept, water content of crisps reaches requirements, original colors of kiwi berries are kept, nutrient composition of kiwi berries are condensed, and the like; compared with traditional freeze drying technologies, the preparation method has lower process cost and better effects.

The invention provides a wire rope pickling method. A phosphating film protection is provided to base metal through pickling, so as to prevent the metal from being corroded again; the phosphating film protection can be used for priming before painting; the adhesive force and the anti-corrosion ability of a paint film layer are improved; and the wire rope pickling method plays an anti-wearing lubrication role in metal cold processing technology. In addition, saponification is provided after phosphorization, and the protective property of the phosphating film of phosphating solution is greatly improved. Acid treatment of hydrochloric acid solution of which the concentration is gradually increased is carried out many times; greasy dirt and corrosion of the surface of the wire rope can be removed; the consumption of an acid liquor is reduced; and the smoothness of the treatment surface is provided. In addition, conservation of energy source is facilitated by normal-temperature soaking; the single soaking time of the acid liquor is shortened; and the hydrogen embrittlement phenomenon is prevented on the basis of saving the energy sources.

The invention relates to a fireproof, waterproof and moistureproof outer decoration prefabricated wall enclosure material, and a preparation method and application thereof, which belong to the field of materials. The enclosure material is prepared from the raw materials of portland cement, expanded perlite, aluminum silicate fiber, a sulfonate fire retardant, a butadiene-styrene copolymer, polyanionic cellulose, polyester fiber, sodium sulfate, a hardening agent, a mildew preventive, a modifier and a retarder. The material has excellent fireproof, waterproof and moistureproof functions at thesame time, and can be beneficial to improving the fireproof, waterproof and moistureproof capabilities of buildings when being applied to the buildings. The preparation method of the material comprises the steps of smashing the expanded perlite; mixing the portland cement and the water; then mixing the smashed perlite, the portland cement mixed with the water, and other raw materials except for the hardening agent; heating for the first time; adding the hardening agent; heating for the second time. The preparation method is simple, and the process is easy to control.

A fusion cutting device for the linking parts of the serially linked sausage segments is composed of a serially linked sausage segments conveyer, multiple electric electrodes arranged at intervals, and the power supply for supplying current to said electrodes. A method for preparing said serially linked sausage segments is also disclosed. Its advantages are no end leakage of each sausage segment and high productivity.

The invention discloses a high-energy power lead-acid storage battery grid alloy. The high-energy power lead-acid storage battery grid alloy comprises the following materials by weight percent: 0.5-2.0% of tin, 0.01%-0.04% of cerium, 0.05%-0.15% of magnesium, 0.01%-0.05% of sodium, 0.001%-0.004% of silver and the balance of lead. The manufacturing method of the high-energy power lead-acid storagebattery grid alloy comprises the following steps: heating the lead to 550-650 DEG C, melting, sequentially adding tin, sodium, magnesium and silver, stirring, stirring for at least 15 minutes each time one metal element is added, then adding the next metal element, adding cerium, stirring for 35-50 minutes, and then starting pouring a grid. The high-energy power lead-acid storage battery grid alloy has the advantages that: the magnesium is added into the grid alloy to replace the traditional metal calcium, so that the grid achieves excellent electric conductivity and corrosion resistance, thecycle life of a battery reaches 800 times or more, the battery is an ideal option for a power battery, and the revolutionary breakthrough of the grid alloy is realized. Meanwhile, the various metal materials are sequentially added and evenly stirred for a long time according to the characteristics of various metal elements, so that the various metal materials have sufficient time to react.

The invention provides a surface hardening treatment process of a melamine decorative panel. The surface hardening treatment process comprises the following steps: firstly, the melamine decorative panel is hung on a jig and cleaned through ultrasonic waves; then the melamine decorative panel is soaked in soda for 10-30 minutes; and then the melamine decorative panel is irradiated under an ultraviolet lamp with the wavelength being 220-240 nm for 10 minutes. According to the surface hardening treatment process of the melamine decorative panel, the melamine decorative panel is cleaned firstly, then subjected to antioxidant treatment through a tartaric acid solution, and then dried; the outer surface of the melamine decorative panel is hardened through a hardening material to obtain a layer of impact-resistant protective film; finally, the hardening degree of the outer surface is increased through reinforcing liquid; and compared with a traditional mode that the melamine decorative panelis hardened only through paint brushing, according to the treatment process, the strength and flexibility of the outer surface of the melamine decorative panel are higher, and a good resistance effecton the impact load is achieved.

The invention relates to a self-compacting concrete preparation process. Components include, by weight, 160-175 parts of water, 250-260 parts of cement, 115-130 parts of coal ash, 38-45 parts of mineral powder, 1000-1050 parts of medium sands, 800-850 parts of broken stones, 0.5-0.8 part of dispersing agents, 0.01-0.2 part of thickening agents and 7.5-8.0 parts of water reducing agents. Sand-stoneaggregates in self-compacting concrete are the broken stones and the medium sands with small particle sizes, the coal ash, the mineral powder, the cement and the like are mixed with the water to achieve good viscosity, the substances are fine powdery, so that the filling degree is high in casting, and the prepared concrete after curing has fewer surface pores and holes and is high in flatness andlow in roughness. By adding special modified additives, the concrete has good dispersing effects, aggregate and slurry separation is avoided, vibration is omitted in the whole process, and good filling effects are achieved.

The invention relates to the technical field of metal processing, in particular to a metal part surface coating strengthening method based on laser beam heat treatment. According to the method, laserheat treatment is sequentially conducted on a frosted annular belt area from inside to outside through annular belt laser beams, a high-area metal surface structure with the low frosted degree flows to a low-area metal surface structure with the high frosted degree in a diverging mode after absorbing heat, rapid diffusion of the inner-side metal surface structure is facilitated, and the heat treatment efficiency is improved; a metal surface group diffuses from the inner side to the outer side to reinforce a polished concave-convex part to form a smooth surface, so that the uniformity of metalsurface strengthening is improved, and the smoothness of the metal surface is also improved; the metal surface is coated with nano coating liquid, so that nano components in the nano coating liquid can be reversely embedded into the metal surface structure in the heat absorption process of the metal surface structure, and the hardening degree of the metal surface strengthening is improved; and theproblems of sparse outer side structure and dense inner side structure of the metal surface in the divergent flowing process are solved.

The present application relates to a setting and hardening accelerator for a cement, mortar or concrete composition, optionally comprising cement replacement materials (CSMs). The accelerator composition comprises an aqueous nitrate solution and an alkaline hydroxide. Particularly, the aqueous accelerator composition comprises between 30 and 55 w/w % of a nitrate salt as a nitrate solution and between 0.02 and 0.1 w/w % of an alkaline hydroxide, which is dissolved in the nitrate solution and, optionally, as a hydroxide precipitate in the accelerator composition, wherein the accelerator composition has a pH of at least 9.0. In case the cement, mortar or concrete composition comprises CSMs, the accelerator composition has a pH of at least 12.0. The application furthermore relates to the use of the accelerator composition according to the present application and to a method for accelerating a cement, mortar or concrete composition by reacting the composition with the accelerator according to the application, in particular at cold temperatures.

The invention discloses a probe for a quick tester of hydrogen content in an aluminium alloy fusant and a manufacturing method thereof. In the hydrogen measuring device used at present, a hydrogen gauge probe has the problems of long measuring period and high price. The manufacturing method of the invention comprises: a, according to parts by weight, 16 parts of silicon carbide with 150 meshes, 5 parts of bentonite, 2 parts of powdery alumina, 1 part of powdery copper oxide and 4 parts of gypsum powder are put into the same crucible to be evenly and fully stirred, 7 parts of water are added, and the mixture is evenly stirred to form a probe raw material; b, the weighed probe raw material is loaded into a die to be compacted and shaped; c, the probe is taken out and is dried at room temperature, and then the probe head is completely dipped into phosphoric acid for 3-4 minutes; and d, after being totally dried, the probe dipped in acid is baked at high temperature. The probe of the invention is a mating device for quickly measuring the hydrogen content in the aluminium alloy fusant.

The invention provides a pretreatment method of improving surface oxygen permeation capability of a TC11 titanium alloy. The method is characterized in that on the premise that the parameters of an original mature oxygen permeation process are not changed, proper machining size control is adopted after proper preheating treatment and heat treatment are carried out, so that the oxygen permeation capability of the TC11 titanium alloy is improved, the surface hardness and the depth of an oxygen permeation layer of the TC11 titanium alloy part are remarkably improved, so that the requirement for the wear resistance of the surface of the part is better met.

The invention belongs to the technical field of straw, and particularly relates to a method for completely recycling straws. The method comprises: S1, carrying out early stage treatment, wherein strawis subjected to collection and centralization, air drying, carbonization, steam activation and drying to form charcoal; S2, mashing the carbonized straw to form charcoal powder, S3, adding an adhesive into the charcoal powder, putting into a stirrer, and uniformly stirring; S4, putting the stirred and mixed charcoal powder into a wood plate mold, and carrying out extrusion molding by using a hydraulic machine to form a plate shape; and S5, coating the outer surface of the molded charcoal plate with a curing agent layer. According to the invention, with the method, the use value of the charcoal powder can be developed in advance; and with the application of the charcoal plate made of the charcoal powder in building, the wood is saved, the manufacturing is convenient, the cost is low, the residual value of the straw can be further developed successfully, and the charcoal plate does not generate bacterial diseases, is environmentally friendly and does not harm human health in building decoration.

The invention relates to the technical field of logistics transportation, and discloses a single-stand-column reciprocating type lifting cargo carrying table protection device for logistics transportation, which comprises a cargo carrying table, a lifting column is movably connected to the inner wall of the middle part of the cargo carrying table, a limiting mechanism is movably connected to the inner wall of the middle part of the cargo carrying table, and an energy supply mechanism is movably connected to the inner wall of the middle part of the cargo carrying table; the inner wall of the middle of the energy supply mechanism is movably connected with a speed limiting mechanism and a triggering mechanism. According to the single-stand-column reciprocating type lifting cargo carrying table protection device for logistics transportation, the cargo carrying table drives the magnetic ring to move, the magnetic ring drives the coil to operate, then the blocking block and the electrorheological fluid are used in cooperation, and therefore the speed limiting protection effect is achieved, when the magnetic ring rotates rapidly under the action of the lifting column, the induced electromotive force generated by the coil is large, and the safety of the cargo carrying table is improved. The hardening degree of the electrorheological fluid is increased, the resistance borne by the blocking block is increased, at the moment, the blocking force borne by the magnetic ring is also increased, and therefore the cargo carrying table runs in a certain constant state.