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117results about How to "Reduce thinning" patented technology

Edge drop control method of cold-rolled non-oriented silicon steel

The invention provides an edge drop control method of cold-rolled non-oriented silicon steel. The edge drop control method includes that a cold rolling five frame and all six roller rolling mill is utilized as an object; an objective function is that the horizontal thickness difference of the non-oriented silicon steel is minimum; the complete set of working roller forecast and feedback and working roller bending compensation control method for edge thinning control of the non-oriented silicon steel is established through introduction of an efficiency effected function array. According to the edge drop control method of the cold-rolled non-oriented silicon steel, the original control device is fully utilized; the maintenance is easy; the technology import capital investment is saved; meanwhile the influence on the flatness control accuracy can be effectively reduced and the horizontal thickness control accuracy of the non-oriented silicon steel can be improved to enable the horizontal thickness difference to decrease from 25 microns to 8 microns below and accordingly the laminated rate of the non-oriented silicon steel finished product and the qualified rate of the quality of the finished product are improved and a new solution is provided to adapt to the edge drop control presetting and feedback of industrial application.
Owner:ANGANG STEEL CO LTD

Conveying belt of aramid fiber high in wear resistance and high in bond strength

ActiveCN104071521AExtended flex lifeReduced canvas layersNatural rubber adhesivesConveyorsRettingMaterials science
The invention relates to a conveying belt of aramid fiber high in wear resistance and high in bond strength. The conveying belt of the aramid fiber high in wear resistance and high in bond strength comprises an aramid fiber skeleton layer, a buffer layer, upper layer cover gum and lower layer cover gum, wherein the buffer layer is arranged between the upper layer cover gum and the aramid fiber skeleton layer, and the upper layer cover gum and the buffer layer, the aramid fiber skeleton layer and the buffer layer, and the aramid fiber skeleton layer and the lower layer cover gum are respectively bonded together through core gum high in bond strength. Main warp threads of skeleton material of the conveying belt of the aramid fiber high in wear resistance and high in bond strength are made of aramid fiber gum dipping canvas high in strength, and the strength level of the conveying belt which is produced can reach 3150N/mm. The conveying belt of the aramid fiber high in wear resistance and high in bond strength can meet the performance requirements that the belt body of the conveying belt is high in strength, high in wear resistance and high in bond strength, resists impact, resists tearing and the like. The braided structure of the skeleton material of the conveying belt of the aramid fiber high in wear resistance and high in bond strength is a straight warp and straight weft structure, and the conveying belt of the aramid fiber high in wear resistance and high in bond strength is long in use life, low in running energy consumption, reduces the diameter of a transmission drum, and decreases the number of long distance connecting times of ends.
Owner:YANKUANG GRP CO LTD +1

Forward-backward drawing and forming method for metal plate soft mould

ActiveCN105537360AInhibit entryEffective anti-wrinkle blank holder forceShaping toolsForward backwardSolid particle
The invention discloses a forward-backward drawing and forming method for a metal plate soft mould. A lower drawing ring is arranged on the outer surface of a male mould of a mould device in a sleeving mode; a drawing slot is formed in the lower drawing ring; an upper drawing ring is arranged on the upper surface of the lower drawing ring; a charging barrel is arranged on the upper drawing ring; a force-reducing column is arranged in the charging barrel; a pressure head is arranged between the force-reducing column and the charging barrel; and the lower end of the force-reducing column is a concave surface which corresponds to the male mould. The forming method is mainly characterized in that the upper and the lower drawing rings are oppositely pressed by external force; a solid particle medium is put into a ring-shaped cavity, the pressure head descends at a speed of v1, and the particle medium is compressed to carry out forward drawing deformation on the plate; meanwhile, under the action of back pressure P1, the force-reducing column is always in a contact state with the plate, the pressure head continuously descends, and the upper and the lower drawing rings float along with the pressing of the pressure head, wherein a flotation speed is smaller than a pressing speed of the pressure head. According to the invention, by combining solid particle medium soft mould forming and backward drawing into one set of mould, the invention provides the forward-backward drawing and forming method for the metal plate soft mould which is simple in structure, is energy-saving and environmentally-friendly, and is formed once.
Owner:YANSHAN UNIV

Light diffusion sheet and backlight unit using that

An object of the present invention is to provide a light diffusion sheet having a favorable cost reduction capability due to excellent scratching preventive property of the front face, and having in addition thereto, a favorable directional light diffusion function, transmittivity of rays of light, and a thin film character; and a backlight unit capable of promoting performances such as luminance as well as price reduction, and thin and light modeling capability. The light diffusion sheet of the present invention has a light diffusion sheet including a transparent substrate layer, and a light diffusion layer overlaid on the front face side of the substrate layer, wherein the light diffusion layer has resin beads and a resin binder, characterized in that the light diffusion layer has protruding parts having a shape of a partial spherical body on the front face in a scattering manner. It is preferred that mean height of the protruding parts be 1 mum or greater and 10 mum or less, mean diameter of the protruding parts be 4 mum or greater and 18mum or less, mean occupancy rate of the protruding parts be 2% or greater and 20% or less, and surface roughness (Ra) of the light diffusion layer be 1.5 mum or greater and 10 mum or less. As the beads, small monodisperse beads as a principal component, and large beads as a sub component may be included.
Owner:KEIWA INCORPORATED

Non-oriented silicon steel cold continuous rolling device and thickness control method

The invention discloses a non-oriented silicon steel cold continuous rolling device and a thickness control method, and belongs to the technical field of non-oriented silicon steel cold rolling and forming. The non-oriented silicon steel cold continuous rolling device comprises a five-rack six-roller cold continuous rolling mill and a double-drum coiling machine, chamfers are correspondingly arranged at the end parts of intermediate rollers on each cold rolling unit of the five-rack six-roller cold continuous rolling mill, chamfers are correspondingly arranged at the end parts of working rollers of first, second and third cold rolling units of the five-rack six-roller cold continuous rolling mill, and the chamfering heights of the working rollers of the first cold rolling unit and the second cold rolling unit are correspondingly greater than the chamfering height of the working roller of the third cold rolling unit. The non-oriented silicon steel cold continuous rolling device has thebeneficial effects that the structure of the cold continuous rolling device and the process of cold continuous rolling are improved and optimized, the measuring accuracy of the longitudinal thicknessof strip steel is ensured, the control force of the transverse thickness of a non-oriented silicon steel strip is improved, the length of out of tolerance thickness of the steel strip head and tail isreduced, the edge thinning of the non-oriented silicon steel strip is reduced, and the qualification rate of longitudinal thickness and transverse thickness of the steel strip is increased.
Owner:新余钢铁股份有限公司

Light sensing circuit and driving method thereof, display panel and display device

The invention discloses a light sensing circuit and a driving method thereof, a display panel and a display device, belonging to the technical field of display. The light sensing circuit comprises that: the gate of a first transistor is electrically connected to a first control terminal, the first pole is electrically connected to a first voltage terminal, and the second pole is electrically connected to a first node; the gate of a second transistor is electrically connected to the first node, the first pole is electrically connected to a second voltage terminal, and the second pole is electrically connected to the first pole of a third transistor; the gate of the third transistor is electrically connected to a second control terminal, and the second pole is electrically connected to a data line; the gate of a fourth transistor is electrically connected to a third control terminal, the first pole is coupled to the first node, and the second pole is electrically connected to a third voltage terminal; the first transistor and the fourth transistor comprise active layers formed of metal oxide, and the fourth transistor is multiplexed into a light sensing element; and the second transistor and the third transistor comprise active layers formed of polysilicon. Compared with the prior art, the invention is advantageous to reduce the process steps and thin the display panel.
Owner:XIAMEN TIANMA MICRO ELECTRONICS

Stretch forming-electromagnetism composite forming device and method for multi-curvature skin piece

The invention discloses a stretch forming-electromagnetism composite forming device and method for a multi-curvature skin piece. The stretch forming-electromagnetism composite forming device comprisesa bottom plate, a mold and an electromagnetic coil used for forming a plate on the mold, the mold is mounted on the bottom plate, and the electromagnetic coil is arranged above the mold. The stretchforming-electromagnetism composite forming device is characterized in that the stretch forming-electromagnetism composite forming device further comprises a vertical oil cylinder, a tangential oil cylinder, and a chuck used for clamping the edge of the plate, one end of the tangential oil cylinder used for tangentially stretching the plate is hinged to the bottom plate, and the other end of the tangential oil cylinder used for tangentially stretching the plate is hinged to the chuck. A stretch forming and discharging composite process is adopted, stretch forming is conducted to solve a certainspringback problem, then remaining springback is eliminated through electromagnetic force, in this way, the thickness reduction of the plate can meet the design requirement, and meanwhile the requirement for electromagnetic forming energy can also be greatly lowered.
Owner:CENT SOUTH UNIV
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