31results about How to "Large elastic range" patented technology

The invention provides a high-intensity low-modulus metastable beta titanium alloy tooth arch wire which is characterized by comprising the following nominal chemical components in percentage by mass: 11 percent of Mo, 3 percent of Nb, 5 percent of Zr, 4 percent of Sn and the balance of titanium and unavoidable impurities. The tooth arch wire provided by the invention has good biocompatibility, high tensile strength, low elastic modulus, a wide elastic range and excellent resilience; moreover, the orthodontic force of the high-intensity low-modulus metastable beta titanium alloy tooth arch wire is lower than that of a stainless steel wire, but is higher than that of a nickel-titanium alloy wire, the elastic modulus of the high-intensity low-modulus metastable beta titanium alloy tooth arch wire is only one fourth to one third of that of the stainless steel wire, and the high-intensity low-modulus metastable beta titanium alloy tooth arch wire has a wider elastic range and a wider orthodontic displacement range than the stainless steel wire. Utilization of the tooth arch wire provided by the invention can obtain the stable and mild orthodontic force and durable and moderate displacement and can realize larger displacement of teeth without replacing an orthopedic wire or only by replacing the orthopedic wire a little.

The invention provides a bamboo elastic sheet mattress adopting left and right separate areas and realizing longitudinal grading, and relates to the technical field of articles for daily life. According to the technical scheme, an upper paving layer, spring core layers and a lower paving layer are arranged, wherein the two spring core layers are arranged on the left and right sides of the width direction of the mattress; the spring core layers are provided with a plurality of elastic support unit structures at intervals along the length direction of the mattress; and the spring core layers arearranged between the upper paving layer and the lower paving layer. According to the technical scheme, through the left and right separate areas, the demands for the hardness and support performanceof the mattress by people having different body weights and body figures can be satisfied, meanwhile, by combining with the longitudinal grading, the demand for the hardness of the mattress by all theparts of the body is satisfied, therefore, the comfort of the mattress is improved, and thus the mattress has a very good market prospect.

The invention belongs to luminous materials for optical storage, in particular relating to a luminous material for optical storage of Ba1-xMgLiGaMxFBr1-ySy: Rez, Ag0.1, which is employed to detect diagnostic images of X-ray of medical treatment and is coactivated by rare earth and silver ion which are coated on the surface of polymer with industrial nondestructive inspection. The invention also provides a process for preparing the luminous material for optical storage. The novel luminous material for optical storage of the invention is matched with an adjustable broad band of which the wavelength is between 650 nanometers and 1000 nanometers, and the adjustable broad band suits all semiconductor lasers in the wave band, wherein the semiconductor lasers are taken as driving light sources matched with the adjustable broad band, thereby greatly improving utilization convenience of a x-ray image plate which is produced by employing the sample to coat and increasing elastic range of choosing the matching driving light sources. In particular, the luminous property of the invention is further promoted by coating the surface via the polymer.

The invention relates to an automatic sizing roiling-up device, which comprises a support, a pair of air cylinders, a drive motor, a pair of support drums, a limit rod, two cloth guide rollers and a pair of support rods, wherein the support comprises two trapezoidal side surface supports and a long rod, the two trapezoidal side surface supports are connected through the long rod, the air cylinders are symmetrically arranged on the two sides of the two trapezoidal side surface supports along a center line of the support, the two cloth guide rollers are arranged on the sides of the support arranged on the same side of the air cylinders from bottom to top, the support rollers are parallel to the long rod of the support, and are arranged on a fixed frame which is arranged on upper transverse beams of the two trapezoidal side surface supports, one side of the fixed frame outwardly extends above the air cylinders, the other sides of the fixed frame are connected with the two trapezoidal side surface supports through hinges, the drive motor is arranged on the side surface of the support and is connected with the support drums, two support rods are respectively arranged in the middle of the two upper transverse beams of the two trapezoidal side surface supports, and limit rods are arranged on the upper ends of the support rods. The automatic sizing roiling-up device meets the demands of clients for large non-stop point cloth rolls, and meets the practical production requirements of time saving, easy management, easy operation and high efficiency.

The invention relates to a process for preparing a sodium sulfate and magnesium nitride compound fertilizer by processing astrakhanite, which comprises the following steps of: mixing the astrakhanite, ammonium sulfate with water to form a mixed system; enabling the composition of the mixed system to be on the connecting line of an astrakhanite composition point and an ammonium sulfate compositionpoint of an Na2SO4-MgSO4-(NH4)2SO4-H2O system phase diagram at the temperature of 25 DEG C; then, reacting at the constant temperature of 25 DEG C, and then, separating the magnesium nitride compoundfertilizer by crystallization to obtain a mother solution B; then, adding Na2CO3 to the mother solution B; reacting at the room temperature to separate magnesium carbonate crystal by crystallization to obtain a mother solution C; performing cooling crystallization on the mother solution C at the temperature of 0 DEG C to separate Na2SO4.10H2O crystal by crystallization to obtain a mother solutionD; adding the astrakhanite, the ammonium sulfate and the water to the mother solution D; and reacting at the temperature of 25 DEG C to separate the magnesium nitride compound fertilizer by crystallization. The compositions and the mass percent compositions of the mother solutions meet the composition range of the mother solution B, and the mother solutions can be circularly produced. The processfor preparing the sodium sulfate and magnesium nitride compound fertilizer by processing the astrakhanite has the advantages that no waste liquor or waste residue or waste gas is discharged, generated little magnesium carbonate is also an important chemical raw material, and no environmental pollution is generated.

Relating to the field of material transfer equipment and reactors, the invention discloses a transfer and reaction device of a high-viscosity material. The transfer and reaction device comprises a jacket shell, a hollow shaft assembly and a dispersion assembly. The dispersion assembly rotates around the hollow shaft assembly in the shell, and is composed of a plurality of heat exchange pipe networks. The invention also provides a mass transfer method of a high-viscosity material. The heat exchange pipe networks with a high specific surface area rotate in an accommodating chamber holding the high-viscosity material, a heat conduction medium in the heat exchange pipe networks are distributed in the heat exchange pipe networks in an accelerated mode under the action of a centrifugal force, and ducts of the heat exchange pipe networks are communicated with an outer cooling system; and the high-viscosity material is thrown from the inner side of the dispersion assembly to the outer side through the rotary heat exchange pipe networks under the action of centrifugal force. The device and method provided by the invention have the beneficial effects of: increasing the effective heat transfer area, shortening the material retention time, broadening the elastic range of treated materials, treating super-viscous materials, reducing material coking, increasing the productivity, and increasing the equipment productivity.

The invention discloses a wood spring and a preparation method thereof. The spring is formed by bending wood, the wood is of a compact structure formed by tightly arranging wood cell units, and the wood cell units are of a solid structure composed of nano cellulose fibers. The preparation method comprises the steps that firstly, wood with part of lignin removed is obtained through a lignin removing technology, then the wood is treated in an N, N-dimethylacetamide/lithium chloride solution, and the wood is subjected to rotating, twisting, shaping and drying to obtain the wood spring. The wood spring is prepared for the first time, and has the characteristics of adjustable elasticity range, excellent environmental friendliness, simple whole preparation process, low energy consumption, suitability for various wood varieties and the like, thereby having a wide application range.

The invention discloses a threaded washer and an installation method thereof. The threaded washer comprises a threaded washer body, a connected part and a bolt, and one end of the bolt is in threadedconnection with the threaded washer body; the other end of the bolt is in threaded connection with the connected part, and the threaded washer is composed of a spiral body with metal plate threads, asupport body with metal plate threads, an arc-shaped body, a threaded process gap and a disc flange; one side of the spiral body with the metal plate threads is provided with the support body with themetal plate threads, and one side of the support body with the metal plate threads provided with the arc-shaped body; and the outer side of the arc-shaped body is connected with the disc flange, andthe middle diagonal of the threaded washer body is provided with the threaded process gap. The pre-tightening force is small, and the elastic range is wide; a part of dynamic load of fasteners can beabsorbed while the purposes of effective fastening and anti-looseness are achieved, so that the fasteners including the bolt are protected from being damaged; and the weight is light.

The invention belongs to luminous materials for optical storage, in particular relating to a luminous material for optical storage of TaVIn1-xMxSBrF1-yIy: Rez, Au0.1, which is employed to detect diagnostic images of X-ray of medical treatment and is coactivated by rare earth and cadmium ion which are coated on the surface of polymer with industrial nondestructive inspection. The invention also provides a process for preparing the luminous material for optical storage. The novel luminous material for optical storage of the invention is matched with an adjustable broad band of which the wavelength is between 650 nanometers and 1000 nanometers, and the adjustable broad band suits all semiconductor lasers in the wave band, wherein the semiconductor lasers are taken as driving light sources matched with the adjustable broad band, thereby greatly improving utilization convenience of a x-ray image plate which is produced by employing the sample to coat and increasing elastic range of choosing the matching driving light sources. In particular, the luminous property of the invention is further promoted by coating the surface via the polymer.