36results about How to "Eliminate bending deformation" patented technology

The invention provides a method for producing an overturning plate valve cover by resin sand, aiming at effectively reducing the cementite tissue in a casting piece, and improving the yield. The method comprises the following steps of: firstly manufacturing a mould and a sand box, wherein the mould is of an integrated structure, and the sand box is wholly cast by nodular iron; evenly mixing raw sand and curing agent, and adding furan resin in proportion, and evenly mixing; filling the resin sand into the sand box till the sand box is filled and struck off, and putting on a plain jolter to be mechanically rammed; preparing coating material, and coating the coating material on the surface of formed resin sand, wherein the coating method adopts a pouring and coating method; after the coating material is dried, baking the surface of the resin sand coated with the coating material by a blast burner; hoisting the sand box to a pouring platform for mould assembling; adding raw materials into an intermediate frequency furnace to be smelted according to the normal nodular iron proportion, and balling according to a normal method; transporting the balled molten iron to the pouring platform, pouring under the temperature condition of 1450 DEG C, releasing a box clamp after pouring for 1 hour, and keeping the temperature for 2 hours; falling the sand after cooling to be less than 200 DEG C; and cleaning the casting piece.

An ultrahigh-speed cooling system for the hot-rolling line of wire and rod materials is composed of at least one cooler consisting of main body, inlet horn pipe, outlet guide pipe and the sleeve pipe of guide pipe, at least one main valve, at least one water trunk, high-pressure water pump, the bench with at least one pair of castors, casing of cooler, and reverse water barrier for preventing the splashing of high-pressure water.

The invention discloses a method for connecting a palladium-based alloy film and a porous stainless steel carrier, comprising the following steps: 1. Sintering aluminum silicate fiber paper to obtain a pressure transmission material; 2. Putting the pressure transmission material and the porous stainless steel carrier on the Press molding between the two layers of quartz glass to obtain the assembly; 3. Cover the surface of the porous stainless steel carrier of the assembly with a palladium-based alloy film to obtain the assembly; 4. Place the assembly in a vacuum hot-pressing sintering furnace. Vacuum diffusion welding treatment; 5. Leveling in a creep forming device to obtain a palladium composite film. The invention effectively reduces the gap between the ultra-thin palladium-based alloy film and the porous stainless steel carrier by adopting the pressure transmission material with elastic deformation ability, improves the uniformity of the pressure in the vacuum diffusion welding process, and effectively improves the pressure of the palladium alloy. The combination rate of the membrane and the porous stainless steel carrier makes the prepared palladium composite membrane have better tissue uniformity and higher density, and is suitable for mass production of the palladium composite membrane.

The invention belongs to the technical field of mechanical equipment, and in particular relates to a plate welding process for winch production, including: plate processing; pre-deformation treatment; and welding forming. The bending deformation of the workpiece after welding can be effectively eliminated, and the assembly accuracy and production quality of the winch are improved.

The invention relates to a fatigue property test method for a wallboard lap joint structure. The fatigue property test method is characterized by comprising the following steps of: installing a test piece in a triaxial bending-limitation clamp; clamping two ends of the test piece by using an upper chuck and a lower chuck of a tester, wherein the centering line of the two chucks is overlapped with the central line of the two ends of the test piece; then prestretching a connection piece twice; continuing to load a sine waveform with a frequency of 5 Hz, wherein the peak value of the load is 0.3[P]n; and reducing the frequency by 1 Hz every 1,000-3,000 times so as to acquire the length a of a crack at each time and a corresponding load cycle number N. The fatigue property test method has the beneficial effects that a fatigue crack extension test for the wallboard lap joint structure with longitudinal load can be carried out; a good test effect is achieved during actual use; and furthermore, any obvious vibration or deformation can be avoided, bending deformation can be eliminated effectively, axial load transmission and deformation cannot be influenced and the effectiveness of test data is guaranteed.

The invention relates to a preparation method for an ITO (Indium Tin Oxide) electrode. The method comprises the steps of firstly forming an ITO conductive layer on a substrate, etching the ITO conductive layer to be a preset pattern, then printing conductive silver paste in the etched area of the ITO conductive layer, baking the conductive silver paste and finally forming an optical cement layer on the surface, opposite to the ITO conductive layer, of the substrate. Since optical cement is flexible, the optical cement layer can be attached onto the surface of the substrate, so that bending deformation caused by stress difference can be made up. Moreover, since the optical refractive index of the optical cement is equivalent to the optical refractive index of the substrate, the bending deformation can be eliminated visually and the goal of relieving the visibility of the surface deformation of the ITO electrode can be achieved. Therefore, the ITO electrode prepared by adopting the method has the advantage that the visibility of the surface deformation can be effectively relieved. Besides, the invention additionally provides the ITO electrode.

The invention discloses a linear compressor scroll plate spring axial stiffness testing device and a manufacturing method thereof. The testing device is formed by an upper cover, a base, a pull rod, an outer washer, an inner washer, a pressing nut, an outer gasket and an inner gasket. The inner edge and the outer edge of a scroll plate spring are respectively fixed through the testing device of the invention, thus the stress directions of the inner edge and the outer edge are strict axial directions and are parallel to each other in a reverse way, the stress bias and bending deformation generated in a scroll plate spring axial stiffness test is eliminated to the maximum so as to accurately measure the displacement of the plate spring under axial stress and the corresponding intensity value and changing trend, the comparison and reference of accurate measured data are provided for the design and manufacture of the scroll plate spring, and the device has positive effect for the optimal design of the scroll plate spring and the development of a linear compressor.

This invention provides movable portal digital-control heavy-plate leveling hydrostatic machine, which is characterized in that, arranging portal on fixed guide rail, welding support plate on wall side of portal bottom, arranging gear roller on guide and joggled small gear and drive motor; arranging leading screw with one end connected to drive frequency conversion motor and leading screw nut on dolly bottom; arranging two side cylinders on main cylinder sides; arranging dust brush on bearing plate to clear dirty on plant. The invention improves the precision, simplifies structure and increases service life.

The invention discloses a method for eliminating bending deformation of a rolling mill-type heavy part. Design idea of the invention is as below: when a workpiece is in an edge-on state, bending deformation caused by deadweight is little, so processing a flatwise cushion block holding surface and a measure reference surface under the state can gain high precision. A plurality of measure reference points are transversely arranged on a measure reference surface, and a flatness of each measure reference point position is measured and recorded. When a workpiece is disposed horizontally, bending deformation will be occurred near a middle part of the workpiece, due to deadweight effect; under this circumstance, only a height of a cushion block under the workpiece needs to be adjusted, so that the flatness of the workpiece at each measure reference point corresponds with the data recorded in the edge-on state of the workpiece, thereby eliminating bending deformation of the workpiece. The method for eliminating bending deformation of the rolling mill-type heavy part of the invention can eliminate bending deformation of the heavy part before processing and increase processing precision of the workpiece.