38results about How to "Improve form factor" patented technology

The invention relates to a conductive silicon rubber material with ultralow compressive deformation and low hardness and a preparation method thereof and belongs to the technical field of conductive silicon rubber materials. The rubber material is prepared by filling conductive fillers with different shape factors so as to ensure that a network passage is formed under the condition of low-usage conductive filler. The rubber material comprises the following ingredients in parts by mass: 100 parts of silicon rubber, 1-15 parts of vulcanizing agent, 0 or 1-8 parts of vulcanizing assistant, 5-15 parts of carbon black and 0.5-5 parts of carbon nanotubes. According to the material, the material is endowed with higher conductivity under the condition that lower compression permanent deformation and lower hardness are guaranteed; the preparation process is simple, and the cost is low; and through testing the electrical and mechanical properties of the material, the conductive silicon rubber material has the following properties: the Shore A hardness is not higher than 50, the 25% constant compression permanent deformation is not higher than 10% (100 DEG C * 24 h), the instantaneous resilience performance is not lower than 60%, and the volume resistivity is not higher than 50 omega.cm.

In certain embodiments, architectural lighting comprises a luminaire with a light source and a waveguide having forward and rearward surfaces. The waveguide can be disposed with respect to the light source such that light from the light source is input into the waveguide and guided therein. The waveguide can include a plurality of turning features that turn the light guided within the waveguide out the forward surface and one or more mounting fixtures for mounting the luminaire on an architectural structure. Some embodiments include a luminaire comprising a light source, a waveguide, turning features, and a lamp stand. Other embodiments are also described.

A burner having a high shape factor nozzle including a nozzle opening having a shape factor from about 10 to about 75, the shape factor being defined as the square of the nozzle perimeter divided by twice the nozzle cross-sectional area, and an annular nozzle surrounding the high shape factor nozzle, wherein the high shape factor nozzle is configured to be supplied with one of a fuel gas and an oxidizer gas, and the annular nozzle is configured to be supplied with the other of a fuel gas and an oxidizer gas. A method of rapid energy release combustion, including supplying a fuel gas and an oxidizer gas to a burner having a high shape factor nozzle and an annular nozzle surrounding the high shape factor nozzle.

The invention discloses a dissimilar metal welding method for low-carbon steel and cast iron. The welding method comprises the following steps that S1, base materials are prepared, wherein the carbon content of the low-carbon steel is less than or equal to 0.6wt%, the carbon content of the cast iron is 2-4wt%, and the thickness of the low-carbon steel and the thickness of the cast iron are smaller than or equal to 10 mm; S2, surface cleaning and assembling of the base materials are carried out, wherein the base materials are cleaned so as to remove oxides and oil stains on the surface, horizontal butt joint assembly is carried out on the to-be-welded low-carbon steel and cast iron which are subjected to the surface cleaning, and a tool clamp is adopted for fixation to form a to-be-welded part, wherein the assembling clearance of the butt joint between the low-carbon steel and the cast iron is less than 20% of the thickness of the low-carbon steel and the cast iron; and S3, a welding process is carried out, wherein the dissimilar metal connection of the low-carbon steel and the cast iron adopts a swing and offset self-melting welding process to weld the to-be-welded part, the deviation of a laser incidence point to deviate towards the low-carbon steel side is the 35-45% of swing amplitude, so that the crack resistance of a weld joint is improved. According to the welding method, the welding cost can be reduced, and the crack resistance of the weld joint can be improved.

An oxy-fuel furnace and method of heating material in an oxy-fuel furnace are disclosed. The method includes combusting oxygen and fuel with an oxy-fuel burner arrangement in the oxy-fuel furnace forming combustion gases, and maintaining a vortex including the combustion gases within a central region of an enclosure of the oxy-fuel furnace. The oxy-fuel burner arrangement includes a plurality of high momentum oxy-fuel burners arranged at an angle to generate the vortex, the angle being greater than 15 degrees but less than 75 degrees with respect to a furnace wall boundary of the enclosure, an angular velocity of greater than 0.07 radians per second, or a combination thereof. The furnace includes an oxy-fuel burner arrangement including at least two high momentum oxy-fuel burners having high shape factor nozzle geometries, and an enclosure. The vortex increases convective heating within the enclosure and uniformity of heating within the enclosure.

The invention discloses a dissimilar metal welding method of low-carbon steel and cast iron. The method comprises the following steps of S1, preparing of base metal, wherein the carbon content of the low-carbon steel is smaller than or equal to 0.6wt%, the thickness of the low-carbon steel ranges from 0.5 mm to 8 mm, the carbon content of the cast iron ranges from 2wt% to 4wt%, and the thickness of the cast iron is larger than or equal to 1 mm; S2, base metal surface cleaning and assembling, wherein the base metal is cleaned, oxide and oil dirt on the surface are removed, the to-be-welded low-carbon steel and cast iron subjected to surface cleaning are in lap joint and are assembled, a tool clamp is adopted for fixing, a to-be-welded part is formed, and the assembly gap of a lap joint of the low-carbon steel and the cast iron is smaller than or equal to 0.5 mm; and S3, a welding process, wherein a galvanometer laser welding head is adopted, swinging and self-fluxing welding are carried out in the welding process, the low-carbon steel is all subjected to penetration through laser welding, the side surface of the cast iron is partially molten, and the contact faces of the low-carbon steel and the cast iron are subjected to self-fluxing to form a weld bead for fixed connection. According to the method, the welding cost can be reduced, and the anti-cracking performance of the weld bead can be improved; and compared with traditional welding methods such as gas shielding welding, deformation of the welding joint is small, and the obvious technical advantages are achieved.

A polarimeter for measuring a polarization rotation caused by a measurement object is provided, the polarimeter including an optically active material. The polarimeter includes a light source unit for irradiating a measurement object with light having a specific polarization; an anisotropic meta surface element for splitting reaction light, obtained by reacting the light of the specific polarization irradiated by the light source unit with the measurement object, into first and second reaction light; and a detection unit for detecting the first and second reaction light separated by the anisotropic meta surface element according to polarization. The polarization rotation caused by the measurement object may be calculated by comparing detection signals of the first and second reaction light detected by the detection unit.

The present invention relates to a power feedback device, including: an AC input power source, which is three-phase or multi-phase AC, or three-phase or multi-phase AC in which the output terminal is connected in series with an inductor, for generating power; a plurality of power converting units, the input terminals of which are respectively connected with two phases of the AC input power source, for power converting the two phases of AC generated by the AC input power source respectively; an isolating transformer, the primary side of which is a three-phase winding and connected with a power network, the secondary side of which is multi-path of three-phase windings and connected with the output terminals of the plurality of power converting units, for feeding the AC converted by the plurality of power converting units back to the power network. The power feedback device according to the present invention can improve the waveform coefficients of the current of the power generation device, and increase the power factors and the utilization rate of the device, and also, the device matches power networks of different voltage levels, thereby improving the waveform coefficients of the current fed back to the power networks and lowering harmonic component.

The invention discloses an ultrathin vehicle-mounted magnetic suspension flywheel battery for an electric vehicle, and a working method thereof. A motor bracket, an axial magnetic flux motor, a flywheel, an inner stator of a five-degree-of-freedom magnetic bearing, a coil and a permanent magnet are coaxially arranged in a shell from top to bottom, and the flywheel consists of an upper layer, a middle layer and a lower layer which are continuous; an upper annular groove is formed in the middle of the upper annular layer of the upper flywheel, the axial flux motor is placed in the upper annular groove, and an annular inner groove, a middle annular cavity and a lower annular groove are communicated and jointly used for placing the inner stator, the coil and the permanent magnet of the five-degree-of-freedom magnetic bearing; and the five-degree-of-freedom magnetic bearing comprises an axial magnetic bearing, a repulsion magnetic bearing, a torsion magnetic bearing and a radial spherical magnetic bearing from inside to outside. The mode that magnetic bearings with different properties are reused is adopted, advantage complementation is achieved, the bearing capacity and control precision of magnetic bearing supporting can be improved, the stability of a flywheel is remarkably improved, and the problem that the loss of a control coil is large due to complex working conditions can be effectively solved.

A semiconductor device includes a semiconductor channel region and a gate region, wherein the gate region includes at least one buried part extending under the channel region. The buried part of the gate region is formed from a cavity under the channel region. The cavity is filled with a first material. An opening is made to access the first material. In one implementation, aluminum is deposited in the opening in contact with the first material. An anneal is performed to cause the aluminum to be substituted for the first material in the cavity. In another implementation, a second material different from the first material is deposited in the opening. An anneal is performed to cause an alloy of the first and second materials to be formed in the cavity.

The invention relates to a demagnetization power supply device for a ship, and a demagnetization signal generation method. The device comprises an LLC conversion module, an H4 inverter module, an LCLfilter module and a common mode rejection module which are electrically connected in sequence; the input end of the LLC conversion module is connected with a direct-current voltage; and the output endof the common mode rejection module outputs a demagnetization sine wave. According to the technical scheme, the demagnetization sine wave with a better waveform coefficient and higher precision can be obtained, and the influence on sensitive equipment on the ship is reduced.

The invention provides an aluminum alloy plate and a preparation method. The preparation method of the aluminum alloy plate comprises the steps that a first 5000-series aluminum alloy mother plate and a second 5000-series aluminum alloy mother plate are welded through a laser stirring welding technology to obtain the aluminum alloy plate, wherein the surface of the first 5000-series aluminum alloy mother plate and the surface of the second 5000-series aluminum alloy mother plate each comprise a Ti/Zr film. According to the preparation method, the first 5000-series aluminum alloy mother plate and the second 5000-series aluminum alloy mother plate do not need to be specially cleaned before welding, additional filling of welding wires are not needed, the preparation cost is saved, and the aluminum alloy plate which is high in welding strength, equal to a base metal in strength and free of welding defects can be obtained.