60results about How to "Geometrically stable" patented technology

The present ivnention relates to a high-strength ultrafine fibre imitation leather. It is made up by using sea-island ultrafine fibre base cloth through processes of impregnating with polyurethane, extracting treatment and after-finishing. The described base cloth is a double-layer or more than double-layer composite base cloth formed from sea-island composite fibre woven fabric and non-woven fabric which are combined together by means of needling process or cohesive process, then said invention makes the composite base cloth undergo the processes of impregnating with polyurethane, hardening, extracting 'sea' component in the solvent capable of removing 'sea' component from sea-island fibre to obtain semifinished product, widening forming, mellowing, dyeing, grinding or sticking film so as to obtain the invented product.

The invention relates to a steel blank grinding abrasion wheel adopting microcrystal ceramic bonding agents, which is in a structure made of polycrystalline solid materials with the coexistence of glass and crystals and adopts the bonding agents of clay, feldspar, boron-containing microcrystal glass, pyrophyllite and soapstone to be made into high-intensity and low-shrinkage engineering ceramic bonding agents, good performance of the glass and the ceramics such as high mechnical intensity, wear resistance, corrosion resistance and the like are integrated, then, the glass and the ceramics are combined with mixed grinding materials, a molding pressing method is adopted for the high-pressure double-side pressing process forming, the low-temperature firing is adopted, the positive pressure reducing atmosphere heat simulation crystallization is adopted at the 800 DEG C heat insulation section, and the mixed grinding material and micro porous glass phase high-intensity microcrystal engineering ceramic composite structure is formed, so the intensity and the bonding degree of the steel blank grinding abrasion wheel are greatly improved, the use linear speed of the abrasion wheel is accelerated, and the safety factor is high. The steel blank grinding abrasion wheel belongs to the novel efficient special steel blank grinding abrasion wheel with the characteristics that the intensity andthe hardness are high, the tissue density is uniform, the grinding ratio is great under the condition of high-speed grinding, workpieces can not be damaged through firing, and the automation of iron and steel industries is easy to realize.

The invention discloses a spherical reticulated shell composed of connected quadrilateral-planed six-rod tetrahedron units. In the structure of the prior art, the number of node concurrent rod pieces is large, which leads the installation and the construction to be difficult. The quadrilateral-planed six-rod tetrahedron unit comprises an upper chord, a lower chord and four web members. The upper chord and the lower chord are in space quadrature arrangement at the center of the rod pieces; the four web members are respectively connected with the upper chord and the lower chord; the spherical reticulated shell is formed by radially and toroidally extending quadrilateral-planed six-rod tetrahedron unit along the open-mouthed spherical shell; among the basic units, the nodes of the upper chords are connected and the nodes of the lower chords are connected; when the quadrilateral-planed six-rod tetrahedron units radially extend, the radial rod pieces of each unit are the same in length, the toroidal rod pieces of each unit have linear variation in length, and a circle of rod pieces are added in the inner ring of the structure from the opening edge to the bottom edge of the shell body. The spherical reticulated shell has stable structure, fewer node concurrent rod pieces and simple and beautiful shape.

The invention belongs to the technical field of engine cylinder sleeves, and particularly relates to a cast iron material for a cylinder sleeve, the cylinder sleeve and a preparation method thereof. The cast iron material for the cylinder sleeve is prepared the following components in percentage by weight: 2.7-3.2% of C, 1.8-2.3% of Si, 2.0-2.5% of Mn, 0.1-0.3% of Mo, 0.1-0.3% of Nb, smaller thanor equal to 0.1% of P, smaller than or equal to 0.1% of S and the balance of Fe. According to the cast iron material for the cylinder sleeve, only a small amount of noble elements of Mo and Nb are added, the total weight of the Mo and the Nb is no more than 0.5%, the type of alloy is few, and the content of the alloy is low. The strength of extension at room temperature of the cylinder sleeve madeof the cast iron material for the cylinder sleeve reaches up to about 470 MPa, and the strength level is much stronger than the higher level of an existing pearlite-based gray cast iron cylinder sleeve.

The invention relates to a colored special-shaped size-stabilized type polyester monofilament and a preparation method thereof. The colored special-shaped size-stabilized type polyester monofilament is composed of, by weight, 84.5 parts to 99.75 parts of polyethylene terephthalate (PET), 0.2 part to 5 parts of color master batches, 0.1 part to 10 parts of poly(ethylene 2,6-naphthalate) (PEN) and 0.05 part to 1 part of barium sulfate powder. By adding the PEN, the thermal resistance of fiber is improved, and no roller sticking phenomenon can occur even when the heat setting temperature is above 245 DEG C; nanometer barium sulfate plays a role of plasticizer, the slippage among high polymers is improved, the drawing ratio is increased, the fiber contraction rate is decreased, and meanwhile the colored fiber can be more uniform and brighter in color and luster; the high drawing ratio is achieved in the fiber drawing process, induced crystallization produced in the fiber drawing process is improved, and the boiling water shrinkage is decreased; the fiber preparing process is simple, dry strands are uniform, fiber is uniform in thickness, woven fabric is smooth, grids are exquisite and uniform, and a colored special-shaped filament is softer and richer in color so that stylized reflection can be facilitated.

The present invention is suitable for production of external adhesion type composite plate. The production process includes the successive step of setting light organic heat-insulating material as core material, spreading GRC cement mortar layer, leveling the cement mortar layer with vibrating scraper to required thickness, spreading glass fiber cloth, spreading the second GRC cement, mortar layer, leveling, spreading non-woven cloth, off-line curing for 24 hr and cutting in required size. The production equipment consists of belt conveyer, driving wheel, scraper, vibrating bin, support wheel shaft and leveling unit combined together. The product of the present invention is suitable for fast in-situ installation.

The invention discloses an efficient isothermal forging mould base. The efficient isothermal forging mould base comprises an upper supporting plate, an upper heat-insulating plate, an upper sleeve, an upper mould rack, an upper mould, a lower mould, a lower mould rack, a lower sleeve, a sensor, a hole, a lower heat-insulating plate and a lower supporting plate, wherein the upper mould and the lower mould are fixed on the upper mould rack and the lower mould rack respectively; the upper sleeve and the lower sleeve are arranged on the outer sides of the upper mould rack and the lower mould rack respectively; the upper mould rack is connected with the upper supporting plate through the upper heat-insulating plate; the lower mould rack is connected with the lower supporting plate through the lower heat-insulating plate; a clamping block is arranged on an axial end surface of the lower sleeve; the sensor is arranged on the outer side of the lower sleeve; and the hole is formed on the lower sleeve. The efficient isothermal forging mould base is heated through the sensor and a mould is fed therein and taken out through the special hole, so that after isothermal forging, the mould is high in size precision, stable in geometric size, small in machining allowance and small in residual stress; and the mold can be heated to a deformation temperature at a very high heating efficiency, so that the production cost is reduced and resources are saved.

The invention belongs to the technical field of inorganic materials, and relates to a synthetic beta-spodumene solid solution, microcrystalline glass prepared from the synthetic beta-spodumene solid solution and a preparation method of the microcrystalline glass In the synthetic beta-spodumene solid solution, according to the theoretical mass ratio of Li2O to Al2O3 to nSiO2 in the chemical formulaLi2OAl2O3nSiO2 of the beta-spodumene solid solution, n is larger than 4 and smaller than or equal to 8, corresponding raw materials containing Li2O, Al2O3 and SiO2 are prepared according to the ratiorequired by synthesis and sintered at the sintering temperature, and the synthesized Li2OAl2O3nSiO2 is obtained, wherein the part of SiO2 of which n is greater than 4 is excessive free SiO2 absorbedin beta spodumene crystal lattices or added SiO2 to form the beta-spodumene solid solution. The microcrystalline glass is prepared from the synthesized beta spodumene solid solution and matrix glass.The microcrystalline glass comprises the following chemical components in percentage by weight: 68%-78% of SiO2, 14.0%-22.0% of Al2O3, 2%-5.5% of Li2O, 0.3%-1.8% of MgO, 1%-3% of ZnO, 1%-3% of B2O3, 0%-3% of BaO, 0.2%-0.4% of ZrO2, 0-1.5% of TiO2, 0%-0.3% of K2O and 0%-0.3% of Na2O.

The invention discloses a manufacture method of a rigidity seal ball valve. The manufacture method of the rigidity seal ball valve comprises the following steps: 1) casting thermal treatment; 2) ball body and valve seat surface hardening treatment; 3) ball body and valve seat cleaning treatment. In the step of casting thermal treatment, a casting is heated to temperature which is 30-50DEG C above a critical point during cooling, and the casting is taken out to naturally cool in the air after the casting is kept warm for 2-5 hours; then, the casting is reheated to the temperature which is 20-30DEG C below critical temperature, and the casting is naturally cooled in the air after the casting is kept warm for 4-8 hours. Thermal spraying technology is adopted for the ball body and valve seat surface hardening treatment. The ball body and valve seat cleaning treatment comprises ungrease treatment and shot blasting. According to the manufacture method of the rigidity seal ball valve, which is provided by the invention, valve body tissue stability is further improved, the internal stress of the valve body is eliminated, ball body and sealing surface hardness can be furthest improved, and the service life of the sealing surface under the states of high temperature, high pressure, corrosion and granularity medium is guaranteed.

The invention discloses an underwater acoustic electronic tag for identity authentication. The underwater acoustic electronic tag comprises a stimulation receiving module, an acoustic tag module, a transmitting module and a power supply module, wherein the power supply module is used for supplying electricity to the stimulation receiving module, the acoustic tag module and the transmitting module; the stimulation receiving module establishes communication connection with a receiving-sending-integrated underwater acoustic transducer and is connected with the acoustic tag module to send a command signal received from the receiving-sending-integrated underwater acoustic transducer into the acoustic tag module; the output end of the acoustic tag module is connected with the transmitting module; and the acoustic tag module acquires relevant information of underwater devices after processing the signal and sends the information from the transmitting module back to a card reader. According to the underwater acoustic electronic tag for the identity authentication, the electronic tag can be used for realizing underwater identity authentication and can contain the relevant information of the underwater devices, a plurality of tags can be simultaneously identified, and great conveniences are provided to the acquiring of the device information of each port. The invention further discloses a control method of the underwater acoustic electronic tag for the identity authentication.

The invention discloses a heat treatment device for a large steel plate converter shell. The heat treatment device for the large steel plate converter shell comprises an oil supply system, a combustion system, a temperature measurement control system, a dedusting system, a heat preservation system and a heat treatment protection system. The heat treatment protection system comprises heat insulation materials, a backing ring supporting device and a converter supporting follow-up device. The heat insulation materials are arranged between a converter body and a backing ring. The backing ring supporting device tightly abuts against the backing ring. The converter supporting follow-up device is arranged at a converter mouth. The invention further provides a heat treatment method for the large steel plate converter shell. By the adoption of the heat treatment device and method for the large steel plate converter shell, the assembly precision of the converter shell can be guaranteed, the safety using requirement for a converter can be met, and the cost is relatively low.

The invention relates to a method for processing an impact cylinder of a pneumatic tool. The pneumatic tool consists of a power source and an impact mechanism, wherein the power source is supplied by an air motor which consists of blades, a rotor and a cylinder; the impact mechanism comprises a striking shaft; one end of the striking shaft is provided with a striking surface which is matched witha striking block; the striking block is provided with a striking pin; two ends of the striking pin are fixed in the impact cylinder through a liner and a drive sleeve respectively; the drive sleeve is meshed with the rotor; and the other end of the striking shaft is made into a rectangular head which is connected with a sleeve. The method is characterized by comprising the following steps for processing the impact cylinder: taking metal blanks, and forging the metal blanks into a solid cylinder; performing normalizing heat treatment on the forged and molded solid cylinder; forming a center hole in the center of the solid cylinder through rough machining, and reserving an end face as an end cover; performing quenching heat treatment; performing fine machining; processing a semicircle orifice straight-through end cover at one end of the inner wall of the cylinder center hole through linear cutting, and forming a round orifice on the end cover; performing destressing tempering; and performing sandblasting on the surface of the cylinder and the hole wall to obtain the finished product.

The invention discloses an ionization ray shielding protection plate. The protection plate includes the following components by weight: 30%-40% of lead sulfide, 10%-20% of mica, 10%-20% of wollastonite, 5%-10% of blanc fixe, 5%-10% of expanded perlite, 15%-30% of binding material, 1%-8% of phosphoric acid and 2%-8% of ferrous sulfate. A manufacture method of the ionization ray shielding protection plate is further disclosed. The ionization ray shielding protection plate is light in plate material weight, high in strength, stable in geometrical size, not easy to deform, strong in shielding performance of ionization ray and capable of being widely used in ionization ray protection and can replace a lead plate in use.

A method for preparing X ray protection slab includes mixing magnesium sulfate with water as per certain ratio uniformly, adding a match amount of lead oxide or iron oxide in mixed material, agitating said material uniformly to be a semi-fluid adhesion matter with shielding function and then using template to form said semi-fluid adhesion matter for obtaining protection slab.

The invention relates to the field of a wear-resistant material and an application thereof, and in particular relates to a wear-resistant alloy and an application thereof in a millstone tile of a coal mill, which are used for solving the problems that the wear-resistant material in the prior art has lower comprehensive performance in strength, hardness, toughness, service life and the like. The wear-resistant alloy comprises the following chemical components in percentage by weight: 0.32-0.35% of C, 0.9-1.1% of Si, 0.8-1.0% of Mn, less than or equal to 0.04% of P, less than or equal to 0.04% of S, 22-24% of Cr, 1.1-1.2% of Cu, 1-3% of Mo, 0.1-0.2% of Al, 0.4-0.6% of V, 0.02-0.004% of B, 0.3-0.5% of rare earth element and the balance of Fe. The millstone tile is subjected to sand casting and casting molding by use of the wear-resistant alloy. By adopting the specific alloy components and the heat treatment technology, the service life of the produced millstone tile is not shorter than twice the average service life of the like products; the millstone tile still can be used normally after 19,859 hours of test use, thereby indicating good performance of the product; and moreover, the labor intensity of workers can be reduced, and the efficiency can be improved.