31results about How to "Reduce surface scratches" patented technology

The utility model relates to the field of solar photovoltaic technology, in particular to a battery piece, a battery piece stacking structure and a solar battery assembly. In the battery piece, the plurality of first isolation bulges are arranged on the back surface of the battery piece body, and the first isolation bulges protrude out of the back surface of the battery piece body; the plurality of second isolation bulges are arranged on the front surface of the battery piece body and protrude out of the front surface of the battery piece body; the plurality of grid lines 40 are arranged on at least one surface of the battery piece body; in the thickness direction of the battery piece body, the height of at least one of the first isolation bulges and the second isolation bulges is greater than that of all the grid lines; and the plurality of second isolation bulges are projected on the back surface of the battery piece body, and the projection does not intersect with the first isolation bulges, or the projection partially intersects with the first isolation bulges. The arrangement of the first isolation protrusions and the second isolation protrusions effectively prevents the grid lines from making contact with the front face of the battery piece body.

The invention relates to the field of matt films, in particular to a scratch-resistant BOPP (biaxially-oriented polypropylene) matt film and a preparation method thereof. The scratch-resistant BOPP matt film comprises an upper surface matt layer, a middle core layer and a lower surface layer which are sequentially arranged, the upper surface matting layer comprises a matting master batch; the matting master batch comprises 28 to 50 weight percent of co-polypropylene, 8 to 14 weight percent of ethylene-octylene block copolymer, 6 to 10 weight percent of micro-crosslinked polypropylene and 30 to 50 weight percent of high-density polyethylene; the ethylene-octylene segmented copolymer comprises a hard segment with low octylene content and high crystallinity, and an amorphous soft segment with high octylene content; the middle core layer comprises homo-polypropylene; the lower surface layer comprises a smooth surface layer or an extinction layer. By utilizing the synergistic effect of the ethylene-octylene block copolymer and the micro-crosslinked polypropylene, the compressive deformation performance, the impact strength, the tensile strength and the yield strength of the co-polypropylene are improved, the indentation of a film surface in a scraping pressure applying stage and the scratches and damages generated in a sliding stage are reduced, the scratch resistance of the upper surface matting layer is improved, and the matting effect is ensured.

The present invention provides a tray structure, comprising: a tray body, formed with a receiving groove and a notch, the notch being connected to the receiving groove; a support assembly, arranged in the receiving groove, the support assembly being formed with a support wall, the support wall facing the notch; wherein the support wall is a convex curved surface. The tray structure provided by the present invention can abut against the surface of the electronic glass product through the support wall in the form of a convex curved surface, while ensuring the supporting effect of the tray structure, further reducing the contact area between the tray structure and the electronic glass product, thereby reducing the possibility of scratching or dirt on the surface of the electronic glass product, improving the production yield of the electronic glass product, and being conducive to saving production costs and improving production efficiency.

The utility model relates to the technical field of glass, and discloses a fireproof multilayer toughened glass, which comprises a toughened glass main body and an aluminum frame, the toughened glass main body comprises a first glass and a second glass, a transparent shell is fixedly arranged on the opposite sides of the first glass and the second glass, fluorescent liquid is arranged in the transparent shell, and the first glass and the second glass are fixedly arranged on the aluminum frame. The first glass comprises a first base layer, a first fireproof layer is fixedly arranged on one side of the first base layer, a first toughening layer is fixedly arranged on one side of the first fireproof layer, and a reflecting layer is fixedly arranged on one side of the first toughening layer. According to the toughened glass, the first glass and the second glass are arranged, the first glass and the second glass are both provided with the fireproof layers, the flame spreading speed can be slowed down when a fire disaster happens, damage to the glass by the fire disaster is reduced, the reflecting layer arranged on the outer side of the first glass can reduce heat loss, and the buffering layer arranged on the outer side of the second glass can reduce heat loss. And surface scratches can be reduced.

This utility model discloses a multi-axis automatic positioning mechanism for an electro-hydraulic bending machine, belonging to the technical field of bending machines. The multi-axis automatic positioning mechanism for an electro-hydraulic bending machine includes a base, a limiting mechanism on the base for positioning the sheet metal, a fixed seat fixed to the top of the base, two bearing seats mounted on the fixed seat, a drive shaft rotatably connected between the two bearing seats, two connecting seats fixed to the outside of the drive shaft, a flipping plate fixed to the connecting seats, a rubber pad connected to the top of the flipping plate, a drive mechanism on the fixed seat for driving the drive shaft to rotate, and a buffer assembly on the base. This utility model solves the problem that existing automatic positioning mechanisms for bending machines cannot dynamically support the sheet metal. By setting a flipping support structure, this utility model provides real-time support to the bottom of the sheet metal during bending, effectively preventing sagging, displacement, or deformation of the sheet metal due to its own weight or uneven force.

The utility model discloses a kind of semiconductor polishing liquid anti-deposition devices, including the storage tank for storing semiconductor polishing liquid, the side surface of the storage tank is equipped with circulation conveying component for semiconductor polishing liquid circulation, rotating drive component is installed on the position of the storage tank and corresponding the circulation conveying component, the bottom of the storage tank is also equipped with agitating component for semiconductor polishing liquid agitation, the circulation conveying component includes fixedly connected in the bottom of the side surface of the storage tank circulation pump, conveying pipe is installed on the circulation pump, rotatable annular pipe is connected to the other end of the conveying pipe.The utility model is by circulation pump and is sent to annular pipe by conveying pipe in the storage tank polishing liquid and is evenly sprayed by spray head, positive and negative rotation motor drives driving link to make annular pipe reciprocating rotation expand spraying range, while agitating motor drives agitating blade to agitate the polishing liquid in the storage tank, ensure its uniform distribution.

The utility model relates to medical instrument technical field, concretely is a kind of metal support cutting quality detection frock, including base, still including rotating part and adjusting part, the cross section shape of base is U shape, the middle installation of base is transparent board, sliding slot is set up on the inner wall of both ends of base, rotating part is installed in the left end inside of base, rotating part is driven rotating cylinder rotation by rotating handle, and rotating cylinder is driven cylinder rotation by the meshing transmission between bevel gear, and rotating cylinder drives support to rotate, adjusting part is installed below rotating part, adjusting part adjusts the distance between cylinder by rotating adjusting handle, and the distance of adjusting cylinder can place support of different diameters.

The utility model relates to the technical field of aluminum alloy surface strengthening treatment, and discloses an aluminum alloy surface shot peening strengthening device which comprises shot peening equipment, the shot peening equipment comprises a box body and a plurality of sand shot nozzles arranged in the box body, one end of the box body is a profile inlet end and is directly connected with a discharge port of an aluminum alloy extrusion die, and the other end of the box body is connected with the shot peening equipment. The other end of the box body is a profile outlet end; the high-temperature compressed air supply equipment is used for providing high-temperature compressed air for a sand shot spray head of the shot blasting equipment; the sand shot supply equipment is used for supplying sand shots to a sand shot spray head of the shot blasting equipment; and the sand shot recovery equipment is used for recovering the sprayed sand shots. According to the utility model, the shot blasting equipment is directly connected to the extrusion on-line discharge hole of the aluminum alloy, and high-temperature shot blasting is carried out in combination with the high-temperature compressed air supply equipment, so that plasticity and toughness which are better than those of room-temperature shot blasting can be obtained in a short time, the strengthening effect of shot blasting treatment is greatly improved, the time cost is saved, and the efficiency is improved.

The utility model relates to the technical field of metal coatings, and discloses a hot brush coating device for metal profiles, which comprises an aqueduct mechanism, a coating mechanism is movably connected to the top side of the aqueduct mechanism, a protection mechanism is arranged on the rear side of the top end of the aqueduct mechanism, and a filtering mechanism is fixedly connected to the rear end of the coating mechanism. The rear side of the filtering mechanism is slidably connected to the top end of the protection mechanism, and the right end of the outer side of the aqueduct mechanism is fixedly connected with an operation mechanism. The smearing mechanism is exquisite and unique in structural design, the solution on the side wall can be effectively prevented from caking, it is guaranteed that the solution is evenly smeared on the surface of the workpiece, and the machining quality is improved. Besides, the filtering mechanism can exert certain elastic kicking on the side wall of the workpiece, the situation that the workpiece is tightly attached to the inner side wall of the smearing mechanism and the inner side wall of the filtering mechanism for a long time is effectively avoided, the risks of surface scratches and damage are reduced, the qualified rate of products is increased, meanwhile, the working efficiency is improved, and the production cost is reduced.

The invention discloses a U-turning machine for rapid transportation of steel billets, comprising a rotating bracket, a slewing device, a dynamic support device, a driving device, and a lifting device; the rotating bracket is movably connected to a foundation through the dynamic support device; the inner end of the rotating bracket is rotatably connected to the foundation through the slewing device; the outer end of the rotating bracket is drive-connected to the foundation through the driving device; and the lifting device is arranged on the rotating bracket. The U-turning machine can realize the direction of the steel billet on the cooling bed to any angle of 270 degrees, realize the transfer of the steel billet to the transport roller in the shortest time, realize the rapid transportation of the steel billet, realize the hot loading and hot delivery function, the surface scratches of the steel billet are small, the quality of the steel billet is well guaranteed, the steel transportation time is short, the equipment investment is small, the floor space is small, and the temperature drop of the steel billet is small.

The utility model discloses a double-wheel polishing device which comprises a jig assembly, a polishing assembly and a supporting assembly, the polishing assembly is connected with the supporting assembly, and the polishing assembly is located above the jig assembly. The polishing assembly comprises a first mounting frame, a first driving part, a connecting shaft and two polishing structures, the first mounting frame is connected with the supporting assembly, the first driving part is mounted on the first mounting frame, an output shaft of the first driving part is provided with a first meshing end, and each polishing structure is provided with a connecting end and a second meshing end; the two ends of the connecting shaft are connected with the first mounting frame correspondingly, the polishing structures are arranged on the connecting shaft in a sleeving mode, the connecting end is rotationally connected with the first mounting frame, and the two second meshing ends are oppositely arranged and meshed with the first meshing ends correspondingly so as to drive the two polishing structures to rotate. The two polishing wheels are driven by the first driving piece to rotate reversely so as to act on the surface of a workpiece from two directions at the same time, the material removing process is accelerated, and compared with single-wheel polishing, the polishing speed is greatly increased.

The utility model discloses a kind of transport pallets for rubber plug production, including rectangular tray main body, the middle part of tray main body inner cavity is provided with baffle, the two sides of the baffle correspond parallel distribution have T type sliding slot, two T type clamping blocks are correspondingly movably connected in the T type sliding slot, the side of the T type clamping block is provided with strong magnet with the magnetic adsorption of T type sliding slot inner wall, T type clamping block is installed with lug seat by the bolt assembly of elasticity adjustable, lug seat is provided with elastic limit buckle, the two sides of the elastic limit buckle are respectively mounted with arc plate and straight plate, the top edge of tray main body is provided with stand column. The utility model structure design scientific and reasonable, realize the position and angle of elastic limit buckle adjustable, solve the problem that traditional tray fixed mode is single, only adapts single specification rubber plug, make tray can pass through flexible adjustment limit area size and shape, compatible different diameter, boss structure's rubber plug, significantly improve versatility.

The utility model relates to a plastic cutting cutting processing device convenient to adjust belongs to plastic pipeline cutting processing technical field, this plastic cutting cutting processing device convenient to adjust, include: cutting table, one side of cutting table rotatory installation has the conveying frame, the top fixed mounting of cutting table has the cutting machine, cutting cleaning mechanism is used for cutting the collection cleaning of cutting debris when cutting plastic pipeline, and the cutting cleaning mechanism sets up in one side of cutting machine, wherein, cutting cleaning mechanism includes the collection box fixed mounting in one side of cutting table, one side of collection box is provided with cleaning component, and one side of conveying frame is provided with feeding assembly, and the plastic debris and dust around cutting point can be synchronously absorbed and collected when the cleaning component works in cutting machine, and it is guided into the collection box in time, prevents the debris splashing, accumulation or diffusion, and feeding assembly can be adjusted according to the plastic pipeline outer diameter fast, realizes the stable feeding of multi -specification pipeline.

The present invention discloses a wafer drying device and a wafer drying method. The wafer drying device comprises: a chuck; a support member, which is arranged on the chuck and is used to support the wafer; a rotating mechanism, which is connected to the chuck and is used to drive the chuck to rotate; a liquid recovery mechanism, which is arranged in a ring shape on the radially outer side of the chuck and is used to receive the liquid thrown outward by the wafer rotation; a recessed portion is circumferentially arranged at the edge of the upper surface of the chuck, and there is a smooth transition between the lowest point of the recessed portion and the edge of the upper surface of the chuck. The wafer drying method is implemented by the wafer drying device. By adopting the above technical scheme, the wafer drying device and the wafer drying method of the present invention optimize the discharge path of the liquid, ensure that the droplets quickly enter the liquid recovery mechanism, and improve the drying effect and liquid recovery efficiency.

The utility model discloses a ceramic cup with excellent wear resistance, which comprises a ceramic cup body, the right side of the ceramic cup body is fixedly connected with a handle, and the surface of the handle is fixedly sleeved with a heat insulation sleeve. The ceramic cup body, the base layer, the bonding layer, the wear-resistant protective layer, the first organic silicon resin coating layer, the glass fiber woven layer and the second organic silicon resin coating layer are matched with one another, so that the wear resistance and the scratch resistance of the ceramic cup body are greatly improved, surface scratches and wear can be effectively reduced in daily use, and the service life of the ceramic cup is prolonged. The attractiveness of the ceramic cup is prevented from being influenced, and the service life of the ceramic cup is prolonged.

The utility model belongs to the field of aluminum profile machining, and particularly relates to an aluminum profile rolling forming tool which comprises a rack. A base and a top seat are installed on the machine frame, a rotating shaft is rotationally connected to the base and the top seat, a forming roller is fixedly connected to the rotating shaft, an oil receiving disc is fixedly connected to the bottom of the machine frame, an oil conveying pump is installed in the oil receiving disc, a first pipe body is fixedly connected to the output end of the oil conveying pump, and an oil spraying pipe is fixedly connected to the first pipe body. The oil spraying pipe is located on the side face of the forming roller, a through groove is formed in the oil spraying pipe, during use, lubricating oil is stored in the oil receiving disc, in the rolling process, the oil conveying pump pumps the lubricating oil in the oil receiving disc, the lubricating oil is conveyed to the oil spraying pipe through the first pipe body and sprayed out of the through groove, and then the lubricating oil is sprayed to an aluminum profile. In this way, the friction force of the forming roller and aluminum profile forming can be reduced, the situation that the surface of the aluminum profile is scratched is reduced, and therefore the situation that the surface of the aluminum profile is scratched is reduced.

The application relates to the technical field of circuit board processing, in particular to a jacking and clapping device, a positioning and conveying device and an optical detection equipment. The jacking and clapping device comprises a jacking mechanism and a positioning mechanism. The jacking mechanism comprises a universal ball and a first lifting device, and the first lifting device is used for driving the universal ball to perform lifting movement. The positioning mechanism comprises interval-distributed positioning reference pieces and a clapping assembly. The first lifting device drives the universal ball to ascend to support the circuit board to be jacked up between the positioning reference pieces and the clapping assembly. The clapping assembly pushes the circuit board to move towards the positioning reference pieces, so that one side edge of the circuit board is in contact with the positioning reference pieces. The application can reduce or avoid surface scratches or damage of the circuit board, and can effectively prevent the circuit board from being curled or deformed under stress.

The present invention discloses a disassembly device for a gerotor motor, which includes a stator and a rotor arranged in the stator. The disassembly device includes: a support seat, a plurality of guide pins, and a rotor disassembly device. The support seat includes a first part and a second part located below the first part, the first part has a first inner hole, the second part has an inner cavity connected to the first inner hole, and the first part is used to support the stator and allow the rotor to pass through the first inner hole into the inner cavity. A plurality of guide pins are fixed on the first part of the support seat, extending upward from the upper end surface of the first part of the support seat, and are configured to cooperate with the fixing holes of the stator of the gerotor motor to position the stator in the radial direction and the circumferential direction of the stator. The rotor disassembly device is used to apply a downward force to the rotor while rotating the rotor. The use of the disassembly device can effectively reduce the surface scratches of the stator and the rotor, while greatly reducing the disassembly time and reducing the labor intensity of the workers.

The present invention relates to the field of wafer heating, and specifically to a wafer heating device, including a sealed chamber body, wherein the sealed chamber body is composed of a lower shell body and an upper cover body, a tray is arranged in the sealed chamber body, a clamping mechanism is arranged on the outer side of the tray, the clamping mechanism includes a first clamping assembly and a second clamping assembly, the first clamping assembly and the second clamping assembly respectively have at least three first limit members and second limit members uniformly distributed in the circumferential direction of the tray, each of the first limit members and the second limit members is provided with a linkage structure that cooperates with the tray, the present invention creates a closed heating environment by introducing hot air into the sealed chamber body, and in the alternating working mode of the first clamping assembly and the second clamping assembly, each part of the wafer can be effectively and efficiently heated, and at the same time, the cooperation of the linkage structure with the first limit member or the second limit member keeps the tray away from the wafer, ensuring complete heating and guaranteeing the quality of the wafer.

The utility model relates to processing turnover device technical field, specifically disclose a bearing processing turnover device, include: handrail, still include: a plurality of clamping components, clamping components set up in the inside of the box subassembly, clamping components are used for clamping bearing, clamping components include two support box, the inner chamber of two support box all slidingly connected with support components, two support box upper portion all are fixedly connected with first limiting component, wherein one support component upper portion fixedly connected with second limiting component, another support component upper portion all are fixedly connected with third limiting component. When the turnover to bearing, through the bearing is placed on the third limiting component, then utilizes second limiting component to limit the position of bearing on the third limiting component, prevents its movement, dumping and mutual collision because of vibration and jolt in the process of transfer, thereby reduces the surface scratch, edge collapse, guarantees the machining precision and surface quality of bearing.

The utility model relates to an adjustable-distance V-shaped supporting iron, belonging to the technical field of large-tonnage shaft part supporting machining. The utility model solves the problems of long production cycle and poor part machining stability in the prior art. Technical points: a concave positioning groove is formed in the left side of the supporting plate, and a convex positioning table is arranged on the right side of the supporting plate; a fixed bracket is arranged in the concave positioning groove, a moving bracket is installed on the convex positioning table, a fixed seat is installed on the right side of the supporting plate, a rotating screw right end portion extends into the fixed seat inner cavity, a rotating sleeve is threadedly connected with the rotating screw, the rotating sleeve is fixed on the moving bracket, and a handle is connected with the rotating screw right end; the inner sides of the fixed bracket and the moving bracket form a V-shaped working surface, and a workpiece backing plate is fixed on the V-shaped working surface. The utility model is simple to install, reduces surface scratches caused by rigid contact, improves shaft part machining quality, and reduces large-tonnage shaft part production and manufacturing cycle.

The invention discloses an oil squeezing device and an oil squeezing method during rolling of metal foil with high surface requirements, and the oil squeezing device comprises a mechanical part and a control system, the mechanical part comprises an upper oil squeezing motor, a lower oil squeezing motor, an upper oil squeezing speed reducer, a lower oil squeezing speed reducer, an upper oil squeezing coupler, a lower oil squeezing coupler, an upper oil squeezing roller, a lower oil squeezing roller, an oil squeezing rack, an inner oil squeezing hydraulic cylinder and an outer oil squeezing hydraulic cylinder, and the upper oil squeezing roller and the lower oil squeezing roller are installed in the oil squeezing rack through bearing seats; the axis of the upper oil squeezing roller and the axis of the lower oil squeezing roller are staggered by 2-5 mm, the position of the upper oil squeezing roller is fixed, and the lower oil squeezing roller can move in the vertical direction. Relative sliding between the oil squeezing roller and the metal foil during oil removal after rolling of the metal foil can be effectively reduced, so that surface scratches of the metal foil are reduced, the surface quality of a foil product is improved, and the requirement of the metal foil with high surface quality is met.

The utility model relates to the technical field of edge banding machines, and discloses a universal edge banding machine for plates with multiple thicknesses, which comprises an edge banding machine, the edge banding machine comprises a base, an edge banding table is fixedly mounted at the upper end of the base, a limiting assembly is mounted on one side of the edge banding table, the limiting assembly comprises a second U-shaped shell, one side of the second U-shaped shell is fixedly connected with the edge banding table, and the other side of the second U-shaped shell is fixedly connected with the edge banding table. A clamping assembly is arranged on one side of a second U-shaped shell in a sliding mode, a third conveying roller of the second U-shaped shell in a limiting assembly and the clamping assembly on a sliding rail form bidirectional constraint, one side of the plate extrudes the upper surface of the plate through a clamping plate in a U-shaped block under the elastic force of a torsional spring, and the clamping plate can be fixed through an electromagnet. In the adjusting process of the first conveying rollers, stable limiting is formed on the other sides of the plates, inclination caused by single-side extrusion is avoided, finally, the plates of different thicknesses are balanced in stress and free of inclination in the conveying process, edge abrasion and surface scratching are reduced, and the edge sealing quality is guaranteed.

The invention discloses a packaging system for aluminum ingot machining, and relates to the technical field of aluminum ingot machining, the packaging system comprises a workbench, supporting legs are fixedly mounted at the bottom of the workbench, two rotating shafts are rotatably mounted in the workbench, and the output end of a motor is fixedly mounted at the end, close to the left side of the workbench, of each rotating shaft; a motor is fixedly installed on the left side of the workbench, the two rotating shafts are in transmission connection through a conveying belt, a support is fixedly installed on the top of the workbench, a pushing device is arranged on the top of the workbench, a centering device is arranged on the top of the workbench, and a leveling device is arranged on the top of the workbench. The aluminum ingots are pushed to the conveying belt through movement of the first push plate, so that the aluminum ingots can quickly and smoothly enter the conveying belt, efficient operation of a production line is ensured, meanwhile, the labor burden of workers is reduced, and occupational diseases and injuries caused by carrying heavy objects for a long time are avoided.

This utility model discloses an elliptical rubber bushing, including an outer bushing tube and an inner bushing tube arranged coaxially. The outer bushing tube is composed of a straight part and a semi-circular part forming an elliptical structure. An integral rubber main spring is vulcanized in the gap between the inner wall of the outer bushing tube and the outer wall of the inner bushing tube. An integral rubber strap is vulcanized on the outer surface of the outer bushing tube. Through a high-temperature vulcanization process, the outer bushing tube, the inner bushing tube, the rubber main spring, and the rubber strap are vulcanized into one piece to form an elliptical rubber bushing. Utilizing its asymmetrical structure, it provides differentiated stiffness in different directions. The higher stiffness in the longitudinal direction ensures support stability, while the larger elastic deformation space in the lateral direction can effectively absorb vibration, achieving independent control of multi-directional stiffness and adapting to compact installation spaces. This solves the technical problems of existing circular bushings having a limited range of adjustable stiffness in a specific direction, making it difficult to meet the dynamic performance requirements under complex working conditions and the limited space in some installation scenarios.

The invention relates to the field of electronic product production and processing, and discloses a suspension type conveying mechanism of a shell packaging machine, the suspension type conveying mechanism comprises a bottom plate, a driving mechanism is fixedly connected to the right end of the bottom plate, a suspension mechanism is fixedly connected to the top side of the driving mechanism, and protection mechanisms are fixedly connected to the left end and the right end of the top side of the bottom plate; the top sides of the two protection mechanisms are fixedly connected with limiting mechanisms, the driving mechanism comprises a protection box and two guide blocks, the bottom end of the protection box is fixedly connected to the right end of the bottom plate, and a motor is fixedly connected to the interior of the protection box; the television shell on the right-end protection mechanism is blown up by high-pressure gas, the television shell gradually breaks away from the supporting face and starts to suspend, and therefore the problems of surface scratching and deformation caused by direct contact in the transmission process of the television shell are reduced; and the quality stability of a finished product is improved.

The utility model discloses an oil -resistant type fluorine rubber aramid fiber composite sealing ring structure relates to the technical field of fluorine rubber sealing ring, including the outer layer, the middle layer and the inner layer, the inside of outer layer and the outside of middle layer rotation cooperation connection, the inside of middle layer and the outside of inner layer rotation cooperation connection, be equipped with the oil return groove on the inner layer, and the oil return groove is arranged in the inside of inner layer in spiral shape, and the outside and the inside are made of fluorine rubber, and the middle layer is made of aramid fiber. Three layer rotation cooperation structure has effectively solved the friction and abrasion problem of traditional integrated sealing ring under the rotating condition, and the relative rotation between layers disperses friction stress, reduces surface scratch, damage such as block, prolongs the service life of sealing ring. Spiral oil return groove can actively recover the leakage medium, reduces the risk of oil leakage, prevents the invasion of external impurities at the same time, guarantees the internal cleanliness of equipment, reduces the wear and corrosion of parts.

The invention relates to the field of wafer heating, in particular to a wafer heating device which comprises a sealing bin body, the sealing bin body is composed of a lower shell and an upper cover body, a tray is arranged in the sealing bin body, a clamping mechanism is arranged on the outer side of the tray, and the clamping mechanism comprises a first clamping assembly and a second clamping assembly. The first clamping assembly and the second clamping assembly are provided with at least three first limiting parts and at least three second limiting parts which are evenly distributed in the circumferential direction of the tray correspondingly, and each first limiting part and each second limiting part are each provided with a linkage structure matched with the tray. A closed heating environment is created, each part of the wafer can be effectively and efficiently heated in an alternate working mode of the first clamping assembly and the second clamping assembly, meanwhile, the tray is far away from the wafer through cooperation of the linkage structure and the first limiting piece or the second limiting piece, complete heating is ensured, and the quality of the wafer is guaranteed.

This invention provides a variable-temperature forging process for difficult-to-deform lightweight aluminum / magnesium alloys. The process involves determining the recrystallization temperature to lock in the preheating temperature; heating the difficult-to-deform aluminum or magnesium alloy billet to the preheating temperature; maintaining a die temperature 50-200°C higher than the billet temperature; implementing an initial temperature transfer deformation process on a forging press, with the die at a high temperature and the billet at a low temperature; ensuring the die temperature is 50-200°C higher than the billet temperature; performing plastic deformation at the same temperature for both the die and the billet when the forging deformation reaches 1 / 3-2 / 3 of the stage; maintaining pressure with the die temperature 50-100°C lower than the billet temperature; water quenching the formed forging, followed by aging heat treatment. This variable-temperature forging process for difficult-to-deform lightweight aluminum / magnesium alloys reduces the tendency for deformation damage during deformation, ensures low-temperature deformation of the workpiece without damage or cracking, improves the deformation uniformity of the workpiece, and optimizes its microstructure and mechanical properties.

The invention discloses ytterbium-doped nano spherical CeO2 particles as well as a preparation method and application thereof. The preparation method comprises the following steps: preparing a cerium source solution and an ytterbium source solution at room temperature; adding ethylene glycol into the prepared cerium source solution, uniformly mixing, adding acetic acid, fully stirring, adding the ytterbium source solution prepared in the step 1, fully stirring, transferring the mixed solution into a hydrothermal reaction kettle with polytetrafluoroethylene, carrying out a hydrothermal reaction, separating solid substances, drying, and sintering in a muffle furnace at 500-600 DEG C for 2-4 hours to obtain the ytterbium-doped cerium-doped ytterbium-doped ytterbium-doped ytterbium-doped ytterbium-doped ytterbium-doped ytterbium-doped ytterbium-doped ytterbium-doped ytterbium-doped ytterbium composite material. Then cooling along with the furnace to obtain ytterbium-doped nano spherical CeO2 particles; the formula is simple, the cost is low, the production process requirement is low, the prepared product is good in dispersity and narrow in size distribution, and the surface mechanical damage of the optical glass is further reduced on the basis of ensuring a certain material removal rate, so that the ultra-smooth surface of the optical glass is realized, and the surface quality is improved.