64results about How to "No reduction in strength" patented technology

The invention provides Al-Mg alloys for automobile body sheets and a manufacturing method thereof, belonging to the technical field of alloy materials. The invention solves the problem that the existing 5754 series alloys have poor strength and impact resistance. The alloys comprise the following components in percentage by weight: 0.001-0.25wt% of Cu, 0.05-0.35wt% of Mn, 2.5-3.5wt% of Mg; 0.005-0.25wt% of Cr, 0.008-0.8wt% of Zn, 0.01-0.15wt% of Ti, 0.001-0.2wt% of Zr, not more than 0.2wt% of Si, not more than 0.3wt% of Fe and the balance Al. The alloys have the advantages of good impact resistance and plasticity and strong feasibility, and the manufacturing method has the advantage of realizing the aims of energy conservation and emission reduction in the process of machining.

The reformable soft gasket consists of chloroprene rubber 2-10 wt%, teflon emulsion 50-84 wt%, silk floss or polymer fiber 3-20 wt%, reinforcing stuffing 0.5-5 wt%, lubricating oil 10-20 wt%, plasticizer 0.5-3 wt% and graphite 0-24 w. The gasket of the present invention has the features of excellent sealing performance, high durability, low friction coefficient, no need of water cooling, good self-lubricating performance, no wear of shaft and muff, power saving, corrosion resistance, capacity of being reused, etc.

The invention provides a high-strength and high-conductivity heat-resistant aluminum alloy wire. The high-strength and high-conductivity heat-resistant aluminum alloy wire comprises the following compositions of, by weight, 0.2-2% of zirconium Zr, 5-12% of cerium Ce, 0.05-0.2% of iron Fe, 0.05-0.1% of silicon Si, less than 0.10% of other impurities and the balance aluminum. The invention furtherprovides a preparation method of the high-strength and high-conductivity heat-resistant aluminum alloy wire. The high-strength and high-conductivity heat-resistant aluminum alloy wire simultaneously has high strength, high conductivity and high heat resistance and low running line loss, the tensile strength of the heat-resistant aluminum alloy wire is greater than 280 MPa and can reach 322 MPa, the conductivity reaches 62% IACS, and the long-term running temperature can reach 210 DEG C. After heating at 280 DEG C for 1 hour for short-term heat resistance test, the strength increases instead ofdecreasing.

The invention discloses a metal sealing ring for an end part of an oil pipe hanger, and a sealing device. The metal sealing ring comprises a metal sealing ring body, wherein the longitudinal section of the metal sealing ring body is rhombic, and a plurality of annular stress relief grooves and deformation grooves which are horizontally arranged are formed in both of the inner wall and the outer wall of the metal sealing ring body at intervals from top to bottom. The sealing device comprises an upper support ring, a lower support ring and the metal sealing ring, wherein the upper support ring and the lower support ring are arranged on the top surface and the bottom surface of the metal sealing ring respectively; the bottom surface of the upper support ring is an inclined surface, and the inclined surface contacts with the vertex angle of the metal sealing ring body and has an angle difference; and the top surface of the lower support ring is an inclined surface, and the inclined surface contacts with the base angle of the metal sealing ring body and has an angle difference. The metal sealing ring and the sealing device, which are disclosed by the invention, have the advantages of being simple in structure, small in size, liable to deform, capable of forming metal sealing with a carrier, good in sealing reliability, and capable of being used for a corrosion environment; and meanwhile, stress deformation is elastic deformation, and the metal sealing ring and the sealing device can be repeatedly used without damage to the carrier, so that the cost can be reduced.

The invention discloses a preparation method of low-temperature quick-soluble agar. The method comprises the following steps: 1, mixing agar powder with water to obtain a mixture, and heating at high temperature until the mixture is completely dissolved to form an agar solution; 2, carrying out ultrasonic treatment of the agar solution; 3, adding cosolvent into the solution obtained in the step 2, fully dissolving and evenly stirring; 4, carrying out high pressure homogenization treatment of the solution obtained in the step 3; 5, carrying out granulation treatment of the solution obtained in the step 4; and 6, sieving to prepare the low-temperature quick-soluble agar. Under the premise of reducing a melting point of the low-temperature quick-soluble agar, the low-temperature quick-soluble agar has relatively strong gel strength.

The invention provides a connection structure of a wiring terminal and an enameled wire, a connection method, a coil assembly and a motor. The wiring terminal of the present invention comprises a wiring terminal body, and a wiring post which is connected with the wiring end of the enamel wire; the wiring post is fixed to the wiring terminal body and includes a first surface, and a first groove which is formed in the first surface and faces downwardly; the connection structure of the wiring terminal and the enameled wire includes the enameled wire and the wiring terminal; the wiring end of theenameled wire is arranged in the first groove; a fixing terminal is crimped and is fixed to the wiring end of the enameled wire and the wiring post; and the wiring end of the enameled wire is butt-welded to the fixing terminal and the wiring post. With the connection structure, and the connection method of the invention adopted, the enameled wire can be arranged and fixed on the wiring post more conveniently and firmly, the enameled wire can be favorably protected, and the enameled wire is unlikely to be damaged due to external forces; the butt-welded connection of the enameled wire and the wiring post is realized, and therefore, the length of the removed sheath of the enameled wire can be controlled, and the service life of the coil assembly or motor can be prolonged.

A flexible flat cable and an apparatus for assembling the flexible flat cable are provided. The flexible flat cable has a conductive wire group including conductive wires disposed parallel to each other and arranged in a synthetic resin cover, in which both end portions and of the conductive wire group protrude outward from the end edges of the cover, and a pair of synthetic resin reinforcing plates are fixed to areas extending from one surface at the respective end portions of the cover through one surface at the respective end portions of the conductive wire group. One of the reinforcing plates includes a hollow square reinforcing plate formed by providing a through hole at the center of a reinforcing plate, and the other reinforcing plate includes a central reinforcing plate extracted from the hollow square reinforcing plate.

The invention provides magnesia cement that has an excellent storage property and is cured to become magnesia concrete having excellent stability. The magnesia cement at least comprises (a) magnesium oxide, (b) at least one of mono- to hexa-hydrates of magnesium chloride, and (c) at least one of mono- to hepta-hydrates of magnesium sulfate. When (b) magnesium chloride includes mono-hydrate or hepta-hydrate, (c) magnesium sulfate is not hepta-hydrate.

The invention discloses silicate cement clinker and a preparation method thereof, and relates to the technical field of preparation of cement. The silicate cement clinker prepared by the invention isprepared from the following raw materials in percentage by weight: 42-72% of limestone as a calcium material, 1-20% of a silicon material, 10-40% of a supplement calcium material, 0-5% of an iron material, and 3-15% of an iron-aluminium material. The supplement calcium material is limestone moulding sand waste. According to the invention, the limestone moulding sand waste is applied to the cementclinker, so that cost of the enterprises can be reduced; waste can be changed into things of value; and great social benefits and economic benefits are achieved for society and the enterprises.

The invention discloses a method for preparing a curcumin-loaded polyacrylonitrile fiber by a dope dyeing method. A wet spinning technology, a dry spinning technology or a dry-jet wet spinning technology can be adopted by a spinning solution which is prepared from polyacrylonitrile, curcumin, a skin penetration enhancer and a solvent; the prepared fiber is beautiful yellow, and can be continuously used directly as a colored fiber without dyeing processing; the color fastness is greater than or equal to 4-5 grades; the method is applied to a drug-loaded functional fiber, has a drug sustained-release effect, and is convenient to medicate and small in side effect; and the curcumin-loaded polyacrylonitrile fiber has weaving mechanical property and can be woven into a fabric.

The invention discloses a book gluing and binding method. The method comprises the steps of book feeding treatment, book back treatment, gluing, covering and book shaping. A page detection device is arranged, so that unqualified pages are prevented from flowing into subsequent procedures, the qualification rate of books is effectively improved, and the waste of raw materials is avoided; a book back treatment mechanism is redesigned, so that paper scraps are prevented from affecting adhesion of glue, strength of the books is improved, meanwhile, the paper scraps on the pages can be prevented from falling into a glue pool, and purity of the glue is guaranteed. A first glue roller, a second glue roller and a distance sensor are arranged, so that gluing of the pages is neither too thick nor too thin, gluing is more uniform, waste of the raw materials can be avoided, and strength and reading experience of the books are not influenced. PUR hot melt adhesive is adopted for book adhesive binding, so that the reading comfort of a reader is improved, and use at high temperature or low temperature can be facilitated. Finally, the cooling time of PUR adhesive coating is shorter, so that the book processing speed is increased.

Illumination optical unit comprising a collector mirror, which produces a polarization distribution that is applied to the first faceted optical element during the operation of the illumination optical unit, wherein there are at least two first facet elements to which radiation having a differing polarization is applied, and furthermore the first faceted optical element has at least one first state in which the normal vectors of the reflective surfaces of the first facet elements are selected in such a way that a first predetermined polarization distribution results at the location of the object field during the operation of the illumination optical unit.

The invention provides a planetary gear rack and a manufacture method thereof, which are capable of reducing component number and processing steps during manufacture of a planetary gear rack, and improving yield of materials. Raw materials (W) of a side wall preset part (3p) and a seat surface preset position (4p) are alternatively configured at the surrounding of a protruding edge (2), via expansion of the seat surface preset position (4p), a seat surface (4) of a small gear is formed, and an opening (6) used for making the small gear be exposed is formed. Via stretching of the side wall preset part (3p), the side wall preset part (3p) is formed to be a side wall (3) connected with the protruding edge (2), and also the seat surface (4) is made to move toward the lower part of the protruding edge (2).

The invention discloses a preparation process for silicate cement clinker, and relates to the technical field of cement manufacturing. According to the invention, limestone moulding sand waste is applied to calcination of clinker to the greatest extent by adopting a limestone moulding sand waste harmful component stripping method, and limestone moulding sand waste partly or completely replace limestone. According to the invention, the limestone moulding sand waste is applied to the calcination of the cement clinker, so that cost of enterprises can be reduced, and waste is changed into things of value, and therefore, great social benefits and economic benefits are achieved for society and the enterprises.

The invention relates to a precoatable anaerobic adhesive microcapsule capable of raising penetration resistance of wall materials and a preparation method thereof. The microcapsule is composed of the following ingredients, by weight, 4-10 parts of urea, 10-30 parts of a formaldehyde solution, 5-15 parts of montmorillonite, 1-10 parts of a core material, 30-80 parts of water, 1-8 parts of a promoter, 1-10 parts of a surfactant and 0.01-3 parts of other auxiliary agents. The preparation method comprises the following steps: firstly adding urea, formaldehyde and montmorillonite into a reaction bottle, adjusting pH to 7-8 and reacting at 72 DEG C for 1.5h; then adding an emulsified solution of the core material, water, an antifoaming agent and the surfactant, adjusting pH to 2-4 and reacting for 4h; and finally filtering and washing to obtain the microcapsule. According to the invention, penetration resistance of the prepared microcapsule is greatly raised, and within a certain period of time, precipitation quantity of the microcapsule in acetone is obviously reduced. In addition, high-temperature storage stability of the microcapsule is enhanced, but strength is not reduced.

The invention discloses a machine head of a casting machine being capable of adjusting the temperature of pipeline fittings of different raw material components, which comprises a machine body, a raw material mixing chamber and a heat-conducting medium circulating loop. The machine head is characterized in that a high-temperature raw material chamber and a low-temperature raw material chamber which are mutually isolated and internally provided with a heat exchange pipeline, a heat-conducting medium inlet opening and a heat-conducting medium outlet opening respectively, and an intermediate feeding chamber are respectively arranged in the machine body, and more than one high-temperature and low-temperature raw material chambers are arranged at the side of the intermediate feeding chamber; the respective heat-conducting media of the high-temperature raw material chambers performs heating and heat preserving to the high-temperature raw material chambers, the heat-conducting media of the high-temperature raw material chambers with operating temperature higher than that of the low-temperature raw material chambers and with higher demand to the local temperature controlling accuracy performs heating and heat preserving to all the low-temperature raw material chambers, the temperature thereof is controlled by adjusting the flow of the heat-conducting media divided by a flow dividing valve per unit time, and the heat-conducting media of one high-temperature raw material chamber performs heating and heat preserving to the intermediate feeding chamber. The invention has the advantages of accurate temperature control, simplified structure, convenient maintenance and prolonging service life of the equipment.

The invention discloses a bamboo-wood combined chopping board. The bamboo-wood combined chopping board includes a chopping board body. The chopping board body includes an upper bamboo board layer anda lower bamboo board layer. A pressed wood board layer is arranged between the upper bamboo board layer and the lower bamboo board layer. The structural points of the bamboo-wood combined chopping board are that the upper surface and the lower surface of the pressed wood board layer are respectively provided with upper stripe grooves and lower stripe grooves, the upper stripe grooves and the lowerstripe grooves are arranged to be wavy and inclined, inclination directions of the upper stripe grooves and the lower stripe grooves are opposite, the lower surface of the upper bamboo board layer and the upper surface of the lower bamboo board layer are provided with frosted layers, and the pressed wood board layer is bonded and compacted with the upper bamboo board layer and the lower bamboo board layer by high-strength waterproof glue. Compared with the prior art, the beneficial effects of the bamboo-wood combined chopping board are that the bamboo-wood combined chopping board is reasonable in design and simple in structure, reduces the production cost without reducing the strength of force, reduces the weight to facilitate transportation, and can make use of discarded wood chips.