56results about How to "High deformation efficiency" patented technology

The invention provides a deformation design method of a product STL model, which is characterized in that the approaching plane of an editing area of the product STL model is solved by adopting the least square method, the vertex of the product STL model is projected to the approaching plane to set up a local plane coordinate system of a projection point set and obtain an axial bounding rectangle with minimum area of the projection point set, the vertex of the product STL model is parameterized, the reference curved surface of the editing area is solved, the mapping relation between the vertex of the product STL model and the projection point on the reference curved surface is set up, the control vertex of the reference curved surface is adjusted, the displacement of the projection point is calculated, the vertex coordinate of the product STL model is adjusted according to the displacement of the projection point to finish the deformation of the editing area of the product STL model, a first-order geometric continuous triangular B * zier curved surface is constructed for the deformed model to realize smoothing treatment of the model, and a smoothed product STL model is obtained by dispersing the triangular B * zier curved surface to finish the deformation innovative design of the product STL model. The method can accurately control the model shape and effectively improve the smoothness and deformation design efficiency of the product STL model.

The invention discloses a preparation method of an electrified railway chromium-zirconium-copper contact line. Copper is taken as a substrate, 0.30-0.70% of Cr and 0.10-0.35% of Zr in percentage by weight are added into the substrate, and the total sum of impurities is no greater than 0.05%. The preparation method comprises the following steps: performing vacuum melting and vacuum horizontal continuous casting, thereby obtaining a long-length large cross section chromium-zirconium-copper continuous cast blank; performing full hot continuous rolling and on-line solid solution, thereby obtaining a long-length chromium-zirconium-copper line rod disc; drawing and peeling the disc, and performing cold continuous rolling, thereby reducing the diameter; further performing aging treatment to reinforce the disc; further performing cold continuous rolling by using a Y-type rolling machine, thereby pre-forming the line; and finally performing fine drawing formation once. The chromium-zirconium-copper contact line produced by using the preparation process is fine and uniform in grain, free of defect, high in strength, high in conductivity and high in softening temperature, and applicable to industrialized production.

The invention relates to a method for preparing a semisolid blank, utilizes an improved SIMA (strain induced melt activation) method to prepare the semisolid blank, and belongs to the technical field of metal semisolid blank. The method comprises the following steps of: firstly, measuring a liquid solid phase line point of the semisolid alloy to be prepared, then, heating an alloy blank so as to carry out asynchronization multitrack rolling or pillar squeezing transformation, finally, remelting, and carrying out heat preservation for a long time so as to obtain the required semisolid blank. The asynchronization rolling or pillar squeezing transformation is capable of generating large deformation amount, group bough crystal formed in the blank is destroyed, the asynchronization rolling is utilized to replace pre-deformation processes such as the existing upset, compression, equal diameter angle compression, and the semisolid blank is prepared and has the advantages of uniform formation, high nodularity, and accurate control solid phase rate.

A first piezoelectric layer is laminated on a first common electrode and comprised of a first piezoelectric material having a first residual stress. A drive electrode is laminated on the first piezoelectric layer, to which a drive signal is supplied externally. A second piezoelectric layer is laminated on the drive electrode and comprised of a second piezoelectric material having a second residual stress lower than the first residual stress. A second common electrode is laminated on the second piezoelectric layer.

The invention belongs to the field of chemical technology and specifically relates to a method for removing residual formic acid in epoxidized fatty acid methyl esters or epoxidized soybean oil by the use of a eutectic solvent. The method provided by the invention comprises the following specific steps: sending crude epoxidized fatty acid methyl esters or crude epoxidized soybean oil which contains 0.2-15wt% of formic acid and is obtained by a epoxidation process through a formic acid method into an extraction kettle, adding a certain amount of an extractant under the condition of stirring, stirring for a period of time, standing for layering, sending a material on the upper layer into a vacuum dehydration kettle for further dehydration and refining, pouring an extract on the lower layer into an extractant regeneration kettle; heating under the condition of pressure reduction to distill formic acid in the extract, recycling the formic acid steam after being condensed in a condenser, and sending residual extractant left in the extractant regeneration kettle into the extraction kettle for recycling. The method provided by the invention has advantages of no discharge of waste water, high formic acid removal rate, simple technological operation, environmental protection, safety and low cost, and is suitable for both small-scale device and large-scale device production.

A first common electrode is formed on a vibration plate and to be fixed at a predetermined potential. A first piezoelectric layer is laminated on the first common electrode and having a first thickness. A drive electrode is laminated on the first piezoelectric layer, to which a drive signal is supplied externally. A second piezoelectric layer is laminated on the drive electrode and having a second thickness thicker than the first thickness. A second common electrode is laminated on the second piezoelectric layer and to be fixed at the predetermined potential.

A first common electrode is fixed at a predetermined potential. A first piezoelectric layer is laminated on the first common electrode and has a first deformability with respect to a predetermined voltage. A drive electrode is laminated on the first piezoelectric layer, to which a drive signal is supplied externally. A second piezoelectric layer is laminated on the drive electrode and having a second deformability with respect to the predetermined voltage which is larger than the first deformability. A second common electrode is laminated on the second piezoelectric layer and to be fixed at the predetermined potential.

A piezoelectric device includes a substrate with a cavity, a vibrating plate which is provided on the substrate so as to block an opening surface of the cavity, and a piezoelectric element which is provided on a surface of the vibrating plate opposite to the cavity, including a first electrode, a piezoelectric layer, and a second electrode, in which the second electrode has a laminated structure including a Pt layer (lower layer side electrode) and an Ir layer (upper layer side electrode), in which the Pt layer is in contact with the piezoelectric layer, and in which, if it is assumed that two directions which are parallel to a surface of the substrate and mutually perpendicular are defined as an X direction and a Y direction, the Ir layer is extended to an outside of the cavity at least in the X direction on an X-Y plane view.

Since two polarizing external electrodes sandwich a portion of a sheet-stacked piezoelectric body that is located between first and second internal electrodes, that portion of the stacked piezoelectric body is polarized in a direction perpendicular to a direction in which the first and second internal electrodes are opposed to each other, when a polarizing voltage is applied to the two polarizing electrodes. Subsequently, the two polarizing electrodes are electrically connected to the second internal electrodes. Thus, the sheet-stacked piezoelectric body can be manufactured without needing to remove the polarizing electrodes. When a drive voltage is applied to the first and second internal electrodes, intermediate piezoelectric sheets of the stacked piezoelectric body are deformed in a “shear” mode, i.e., are curved toward a pressure chamber in which ink is accommodated. Since, simultaneously, an electric field parallel to the direction of polarization of the stacked piezoelectric body is produced in an outermost piezoelectric sheet of the stacked body, the outermost sheet is elongated in the direction of stacking of the piezoelectric sheets, whereby the amount of deformation of the stacked piezoelectric body toward the pressure chamber is increased.

The invention discloses a Q500-steel-grade low-alloy structural steel bar and a controlled-rolling and controlled-cooling rolling method thereof, the Q500-steel-grade low-alloy structural steel bar comprises the following chemical components by weight percentage: 0.05%-0.18% of C, 0.20%-0.40% of Si, 1.00%-1.60% of Mn, less than or equal to 0.030% of P, less than or equal to 0.030% of S, less than or equal to 0.20% of Cr, less than or equal to 0.20% of Ni, less than or equal to 0.10% of Mo, less than or equal to 0.15% of Cu, 0.02-0.10% of V, less than or equal to 0.05% of Nb, less than or equal to 0.02% of Ti, less than or equal to 0.004% of B, 0.005-0.012% of N, 0.02-0.04% of Al and less than or equal to 0.45% of CEV=C+Mn/6+(Cr+Mo+V)/5+(Ni+Cu)/15. According to the method, the initial rolling temperature of rolling ranges from 1000DEG C to 1050DEG C; by adopting the method, the uniformity of rolled piece structure can be realized.

The invention provides a downward-pressing arc-shaped steel plate processing device which comprises a die seat, a punching die and a supporting seat. In the process of bending a steel plate prefabricated member, the punching die squeezes a steel plate prefabricated member from top to bottom; in the process of punching, utilizing of dead weight of the punching die and the steel plate prefabricatedmember to improve deformation efficiency is facilitated, so that energy consumption is lowered. A groove is arranged to integrate a die with a clamp, so that processing steps and structure of the processing device are simplified, lowering of operation difficulty is facilitated, and processing cost is lowered.

The invention discloses a two-time torsion extrusion device and method with a variable-section cavity for grain refining. The device comprises a male die part, a transmission mechanism, a power mechanism and a female die part, wherein the male die part is matched with the female die part, and the power mechanism is connected with the transmission mechanism; and the male die part comprises an upperdie plate and an upper die, the female die part comprises an upper cylinder, an upper plate and a main die, the upper die plate is arranged on the upper die, the upper die is matched with the upper cylinder and enters the upper cylinder and the main die in a working state under the action of a hydraulic press sliding block, the upper cylinder is arranged on the upper plate, the main die is arranged below the upper plate and connected with the upper cylinder, and the upper die enters the upper cylinder in the working process. According to the two-time torsion extrusion device and method, by changing the shape of the section of the inner cavity of the rotating die, the die with the variable-section cavity is rotated during extrusion, a material has both extrusion deformation and shearing deformation brought by die rotation, severe plastic deformation is realized, forming force is small, deformation efficiency is high, and a good grain refining effect can be achieved.

The invention belongs to the technical field of structured grids, structured/unstructured hybrid grids and point clouds, and specifically relates to a sample simplifying method of radial basis function support points. The data sample simplifying scheme of the invention comprises the following steps: boundary grid points are grouped through a group of cuboids firstly, the number of each group of grouped grid points is about 100, and an average position and an average deformation amount of each group of the grid points are calculated; and, when the next group of sample points are searched, the group is taken as a unit firstly, 3-5 groups the grid points of which have the maximum deformation amount error of the average position of the various groups of the grid points, the grid points in the 3-5 groups are then searched one by one, the grid point having the maximum grid deformation amount error in each group is determined, and the grid point, having the maximum grid deformation amount error in each group, as a new sample is added to a sample space. Time for search the sample points can be reduced through adoption of the technical scheme.

The invention discloses an intelligent valve and a using method thereof, and belongs to the field of intelligent valves. The intelligent valve comprises an intelligent valve body and an intelligent valve controller fixedly installed at the upper end of the intelligent valve body, and a temperature control type flexible sealing piece matched with the intelligent valve body is arranged between the intelligent valve body and an intelligent valve deck; a self-cleaning fish scale set is connected with the lower end of the temperature control type flexible sealing piece, the self-cleaning fish scale set can be washed through the matching effect of the temperature control type flexible sealing piece and the self-cleaning fish scale set by means of fluid pressure, residues of impurities on the wall face of the self-cleaning fish scale set are reduced, damage of the impurities to the temperature control type flexible sealing piece is reduced, the sealing effect of the intelligent valve body is improved, and the service life of the intelligent valve body is prolonged; and the self-cleaning effect is achieved through flowing resistance, the control difficulty of an intelligent valve controller is reduced, the manufacturing cost of the intelligent valve body is reduced, and the economic benefits of the intelligent valve body are improved.

The invention relates to forging and pressing equipment and a forging and pressing process thereof, and relates to the field of forging and pressing. The equipment comprises a rack, a mandrel, a firstmotor and an oiling assembly, wherein the mandrel is rotatably connected with the rack, the first motor is used for driving the mandrel to rotate, and the oiling assembly comprises a first lubricating oil tank, a lifting frame, a brush and a first driving cylinder; in a normal state, the brush is located in the first lubricating oil tank and is fixedly connected with the lifting frame, and the first driving cylinder is used for driving the brush to slide to the outer wall of the mandrel from the interior of the first lubricating oil tank; and during operation, lubricating oil is smeared on the inner wall of a cylindrical workpiece firstly, then the cylindrical workpiece is heated, lubricating oil is smeared on the outer wall of the mandrel, the outer wall of the mandrel is sleeved with the heated cylindrical workpiece, and finally the cylindrical workpiece is extruded. The equipment has the effect of improving the deformation efficiency of the cylindrical workpiece on the mandrel.

The invention discloses a balanced heating type resistance furnace, and belongs to the field of electric furnaces, the balanced heating type resistance furnace comprises a resistance furnace body, the lower inner wall of the resistance furnace body is fixedly connected with a partition temperature-equalizing plate located on the upper side of an electric heating element, and a plurality of temperature-equalizing adjusting holes are formed in the partition temperature-equalizing plate; a plurality of air-equalizing holes communicated with the temperature-equalizing adjusting holes are formed in the partition temperature-equalizing plate, air drum type supporting force bags are arranged in the temperature-equalizing adjusting holes, and heat generated by the electric heating element can be subjected to contact type heat conduction and partition heat radiation under the action of the air drum type supporting force bags and a heat radiation plate, so that the heat transfer efficiency of the electric heating element is improved; and thus, auxiliary heat conduction is conducted on a material shielding position area in the furnace, the balance of the temperature in the furnace is effectively improved, the heating efficiency of the resistance furnace body on the materials is improved, the material heating uniformity is effectively improved, the material smelting quality is improved, meanwhile, the energy loss of the resistance furnace body is reduced, and the environment friendliness of the resistance furnace body is improved.