48results about How to "Not deformed" patented technology

The invention discloses a method for molding a phenolic panel honeycomb sandwich structural member and belongs to the technical field of composite material molding. The phenolic panel honeycomb sandwich structural member comprises inner covering skin, outer covering skin, a frame, a honeycomb, a reinforcing fiber prepreg tape reinforcing layer, an inner glue film layer and an outer glue film layer. The method comprises preparing a phenolic resin prepreg cloth, preparing a mold having the honeycomb sandwich structure shape, pre-curing the inner covering skin and the frame, paving a reinforcing fiber prepreg tape through bonding the reinforcing fiber prepreg tape to the surface of the pre-molded inner covering skin to obtain the reinforcing fiber prepreg tape reinforcing layer, carrying out honeycomb installation and pre-curing, pre-curing the outer covering skin, assembling a product through paving the outer covering skin layer, integrally curing the assembled product and carrying out demolding. The method can mold a large-size honeycomb sandwich structure. The molded honeycomb sandwich structure does not deform, lose viscidity and produce bulge, has the size, weight and shape satisfying design requirements and has good ablation resistance.

The invention discloses a method for preparing a hard particle coating on a hard substrate through laser-assisted cold spraying. The method comprises the following steps: subjecting the hard substrate to sand blasting, wherein the hardness of the hard substrate is 300 HV; preheating a spherical hard particle with a diameter in a range of 30 to 50 mu m, wherein preheating temperature is 300 to 600 DEG C, and the hard particle is one or more selected from the group consisting of 2Cr13, 17-4PH, Ni45, Ni60 and Inconel718; carrying out spraying on the surface of the hard substrate by using compressed air having a pressure of 1.5 to 3.0 MPa and carrying the preheated hard particle; and starting laser to synchronously heat a spraying area so as to form the hard particle coating on the surface of the hard substrate, wherein laser power density is 3*10<5> to 5*10<5> W/cm<2>, and wavelength is 850 to 1060 nm. The method provided by the invention can substantially improve plastic deformation generated during collision between the hard particle and the substrate, so the binding force of the coating is improved; thus, the coating with higher stability is obtained.

A moisture-proof, heatproof, size-stable, deformation-free and anti-cracking solid wood floor processing method provided by the invention relates to the technical field of building materials. By the adoption of a wet-heat resistant, anti-deformation and anti-cracking key technology, a solid wood floor blank is completely immersed in a container filled with a waterproof moisture-proof substance in a liquid state of 35-95 DEG C, and simultaneously a pressure of 0.2-1.5Mpa is applied for 24-72 hours so as to make the waterproof moisture-proof substance to be permeated into the inside of the solid wood floor blank; and after the solid wood floor blank is taken out and infiltrated, the solid wood floor blank is dried and processed according to specification requirements so as to manufacture the moisture-proof, heatproof, size-stable, deformation-free and anti-cracking solid wood floor product. The waterproof moisture-proof substance comprises, by weight, 0-100% of wax and 0-100% of dry plant oil, is used in wet-heat resistant, anti-deformation and anti-cracking processing of wood floor, and can be used to make solid wood floor moisture-proof, heatproof, size-stable, deformation-free, anti-cracking and durable.

The invention discloses a stripping device and a stripping method adopting the same, which are used for stripping a flexible substrate from a substrate. The stripping device comprises a laser transmitter and a coil unwinding wheel, wherein the coil unwinding wheel is provided with a roller and a plurality of suckers positioned on the roller; the laser transmitter is used for transmitting laser to an interface between the flexible substrate and the substrate at an edge area of the flexible substrate; the coil unwinding wheel is used for adsorbing the flexible substrate by adopting the suckers; the whole flexible substrate is wound by using the rolling of the roller. According to the stripping device provided by the embodiment of the invention, adverse influence such as deformation of the flexible substrate and damage to an active layer caused by a laser integral stripping technology can be avoided, and no deformation and no damage of the flexible substrate in a stripping process are guaranteed.

The invention discloses a portable nondestructive detecting instrument of a laser speckle tire and a detection method thereof. The detecting instrument disclosed by the invention comprises a driving mechanism and a detection mechanism which are mutually independently arranged, wherein the driving mechanism comprises a motor, a reduction gear, a driving wheel, a positioning rod, a pushing hand, anidler wheel and a rotating shaft; the motor and the reduction gear are connected and arranged at one end of the rotating shaft; the pushing hand is arranged at the other end of the rotating shaft; the pushing hand is in a U-shaped structure; the positioning rod is arranged between the U-shaped side of the pushing hand and the driving wheel; the detection mechanism comprises a detection head and atriangular bracket; the detection head is arranged on the triangular bracket; and the exterior of the detection head is connected with a computer. The detection method disclosed by the invention comprises the following steps: dividing the tire into multiple sectors; respectively shooting the tire surface section and tire side of each sector before and after pressurization; and analyzing the obtained picture, thereby judging the conditions of the breakage, actual bulge or air bubbles of the steel wire in the tire. The detecting instrument disclosed by the invention adopts a pressurized mode toload; and compared with the prior art, the detecting instrument is convenient to use, has the advantage of simpleness in operation and can be better suitable for the outdoors or the condition that the tire is installed on a vehicle.

The invention discloses a railway wheelset press-fitting mechanism with the end surface of an axle as a benchmark. The railway wheelset press-fitting mechanism with the end surface of the axle as the benchmark comprises a main pressure head, an auxiliary pressure head, a benchmark measuring rod, a right floating measuring rod and a left floating measuring rod, wherein the main pressure head and the auxiliary pressure head are coaxially arranged in opposite directions; the benchmark measuring rod, the right floating measuring rod and the left floating measuring rod move along a railway parallel to axes of the main pressure head and the auxiliary pressure head; the benchmark measuring rod is used for movement along with the end surface of the axle; the left floating measuring rod is used for movement along with the inner side surface of a left wheel of a wheelset; the right floating measuring rod is used for movement along with the inner side surface of a right wheel of the wheelset; the benchmark measuring rod, the right floating measuring rod and the left floating measuring rod are all perpendicular to the axes of the main pressure head and the auxiliary pressure head; first displacement sensing equipment is arranged between the benchmark measuring rod and the right floating measuring rod; and second displacement sensing equipment is arranged between the left floating measuring rod and the right floating measuring rod. The railway wheelset press-fitting mechanism with the end surface of the axle as the benchmark can reduce errors caused after a press-fitting size measuring and controlling device is stressed.

The invention provides a riveting device of a relay contact, which mainly consists of a punch, a compression spring, a supporting arm, a rivet pin, a base, a screw, a cylindrical pin, a pressing sleeve and a guide sleeve, wherein the punch is composed of a punch body and a cemented carbide rivet head; and the rivet pin is composed of a rivet pin body and a cemented carbide base rivet. According to the riveting device of the relay contact, a material with high strength and good abrasive resistance is nested on the working parts of the punch and the rivet pin, so that the service life reaches up to 300,000 times; and meanwhile, a part to be riveted is pre-pressed by using the pressing sleeve and the compression spring, thereby ensuring that the contact to be riveted is not crushed, transformed, polluted and the like, and improving the riveting quality and the work efficiency.

The invention provides a child dummy, which comprises a head, shoulder joints, a trunk, thighs, shanks, big arms, forearms, hip joints, knee joints and simulation skin, the head is fixedly connected with the trunk, the trunk is connected with the big arms through the shoulder joints, the trunk is connected with the thighs through the hip joints, the thighs are connected with the shanks through theknee joints, and the big arms are connected with the forearms; the simulation skin is laid on the head, the trunk, the thighs, the shanks, the big arms and the forearms; the simulation skin comprisesan epidermal layer, a supporting layer and a connecting layer; and a first gravity center adjusting mechanism is arranged in the trunk. The child dummy conforms to the appearance characteristics, themass distribution characteristics and the joint movement characteristics of the three-year-old Chinese children at the present stage, and the real biomechanical characteristics of the three-year-oldChinese children can be well reflected; based on ergonomic test requirements, biomechanical evaluation during product safety evaluation of the three-year-old children can be realized, and particularly, three-dimensional motion trails, human-computer interaction acting force and the like of the three-year-old children during toppling or falling and other tests can be objectively and truly reproduced.

The invention provides a PVC (Poly Vinyl Chloride) foamed ventilated window which comprises an upper frame, a lower frame, a left frame, a right frame and blades mounted between the left frame and theright frame. Component slots are formed in both the left frame and the right frame; the component slots face the end parts of the blades; upper frame fixed parts are arranged at the upper parts of the component slots; lower frame fixed parts are arranged at the lower parts of the component slots; metal reinforcement pipes are arranged at the middle parts of the component slots; each component slot comprises a component slot inner layer and a component slot outer layer; the upper frame and the upper frame fixed parts are fixed together; the lower frame and the lower frame fixed parts are fixedtogether; the metal reinforcement pipes are embedded in the component slot inner layers; blade mounting rods are arranged outside the metal reinforcement pipes; the blade mounting rods are positionedon the component slot outer layer; and the end parts of the blades are rotatably mounted on the blade mounting rods. Due to adoption of a PVC material, the PVC foamed ventilated window is light in weight and damp-proof, cannot be mildewed and cannot breed bugs; an aluminium skeleton is arranged in the PVC foamed ventilated window, so that the PVC foamed ventilated window has performance of resisting to high and low temperature difference deformation and is firm and durable; and due to adoption of a detachable structure, the PVC foamed ventilated window is convenient to mount, has excellent maneuverability and is attractive in appearance.

The invention discloses a knapsack correction device. The knapsack correcting device is a device used for correcting sitting postures and preventing shortsightedness and comprises a head cap 1, a tightness adjusting belt 2, a telescopic belt 3, a movable part 4, an elevation angle adjusting button 5, a connecting shaft 6, a main body part 7, a waist belt 8, a breathable layer 9 and a shoulder belt. People who sit for study or work for a long time can keep correct postures, and it is guaranteed that the spine and the cervical vertebra cannot deform due to fatigue.

The invention provides strawberry appearance repairing fertilizer. The strawberry appearance repairing fertilizer comprises, by weight, 90 to 110 parts of ammonium sulfate, 22 to 42 parts of triple superphosphate, 243 to 263 parts of urea, 190 to 210 parts of calcium superphosphate, 10 to 30 parts of calcium magnesium phosphate fertilizer, 310 to 330 parts of potassium sulfate, 8 to 12 parts of borax, 8 to 12 parts of polyamine peptide and 0.4 to 0.6 part of amino acid-containing water-soluble fertilizer. Uniform growth of strawberry crops is promoted, the morbidity of strawberries is reduced,the planted strawberries are not deformed, and the finally obtained strawberries are more nutritional, better in taste, higher in appearance appearance and more easily accepted by the market.

The invention provides a plate connecting structure. The plate connecting structure is characterized by comprising a column, a connecting rod and at least two plates; positioning grooves are formed in at least two side faces of the column in the length direction; positioning edges are arranged on the two sides of a notch of each positioning groove; one end of the connecting rod abuts against the interiors of the positioning grooves, and therefore the connecting rod and the column can be fixed; the other end of the connecting rod extends out of the positioning grooves, and the other end of the connecting rod and the plates are fixed through connecting auxiliary pieces; and the plates are attached to the column. According to the plate connecting structure, position deviation between the plates due to trepanning position deviation can be avoided, the pass percent of products is increased, and the quality of the products is improved. The invention further provides a plate connecting method capable of achieving position alignment between the plates, easy and convenient to operate and capable of improving the assembly efficiency and lowering the technology difficulty.

The invention provides an artificial wooden multilayer glued die-pressed door sheet and a manufacturing process thereof. The artificial wooden multilayer glued die-pressed door sheet comprises wood veneers sequentially stacked and laid transversely and longitudinally, the total number of the layers of the wood veneers is five, the length direction is the transverse direction, the width direction is the longitudinal direction, and natural grain of the wood veneers is shown in the longitudinal direction. According to the manufacturing process, water softening treatment is not needed, the depth of die-pressed patterns is more than 12 mm, the stereoscopic sense is higher, and meanwhile the technical problems of breakage, deformation and the like in the die-pressing process are effectively solved. The door sheet has the advantages of being free of deformation or cracking or angle uplifting, resistant to impact and the like.

The invention relates to the field of building materials, in particular to a preparation method of a plastic support plate. The plastic support plate comprises polypropylene, polyethylene, solvent, reinforcing agent, anti-ageing agent, wood fiber, degreasing agent and plasticizing agent. The method comprises the following steps: mixing 30% of polypropylene, 30% of polyethylene, 8-10% of solvent, 3-5% of reinforcing agent and 1-2% of anti-ageing agent; mixing 15-20% of wood fiber and 5% of degreasing agent; adding 5% of plasticizing agent into the mixed raw materials, mixing, and stirring; pouring the mixture into an extruder for plasticizing; pouring the plasticized material into a plastic support plate mould; carrying out pressure forming with a hydraulic machine; and taking out the plate, and trimming. The plastic support plate produced by the method has the characteristics of high strength, light weight, water resistance, ageing resistance, worm damage prevention, no deformation, long service life and the like, is not stratified, can not be broken easily, is easy to transport, can be recycled and does not pollute the environment.

The invention provides a cultivation method for regulating and controlling the hydrangea flowering period, and belongs to the technical field of plant cultivation, and the cultivation method comprisesthe step of placing hydrangea plants at the temperature of-8 DEG C to 8 DEG C for 30-45 days. Experimental results show that by adopting the cultivation method for regulating and controlling the hydrangea flowering period, the blooming rate of the hydrangea reaches up to 100%, vegetative growth of the hydrangea can be effectively inhibited, the blooming period is advanced by 2-3 days, the blooming branch internode spacing is reduced by 20.5%, stem diameter is increased, and plant type is more compact without causing branch bud deformity.

The invention relates to a sitting posture myopia corrector. It is a device used to correct sitting posture and prevent myopia, including: head cap 1, elastic adjustment belt 2, telescopic belt 3, movable part 4, elevation adjustment twist 5, connecting shaft 6, main part 7, waist belt 8, breathable Layer 9 straps. Make people who sit and study or work for a long time maintain a correct posture to ensure that the spine and cervical cone will not be deformed due to fatigue.

The invention discloses a durable industrial adhesive tape, which comprises the following components by weight ratio: 7-14 parts of polyurethane, 3-5 parts of 3-hydroxyl-propionitrile, 2-3 parts of calcium stearate, 6-9 parts of polypropylene, 5-8 parts of polypropylene glycol 2000, 5-6 parts of ethylene oxide and 3-4 parts of o-phenylphenol. A preparation method of the industrial adhesive tape comprises the following steps: 1)turning on a mixing roll, preheating the mixing roll, respectively weighting polyurethane, 3-hydroxyl-propionitrile and calcium stearate, mixing under high temperature at 150-170 DEG C; 2)adding polypropylene, ethylene oxide and o-phenylphenol in the mixing roll for mixing again; 3)adding polypropylene glycol 2000 in the mixing roll for mixing again; and 4)after mixing is completed, compacting and molding the adhesive tape by using a mole to obtain the durable industrial adhesive tape.

The invention provides an excessive flash removing device and technology of an MIM (Metal Injection Molding) green body. The device comprises a excessive flash removing mechanism, wherein the excessive flash removing mechanism comprises an air compressing system, a refrigerated air dryer, an ice scrapping system and a feeding and injecting pipe, wherein the air compressing system is connected to the refrigerated air dryer; the refrigerated air dryer and the ice scrapping system are connected to the feeding and injecting pipe through pipelines; the refrigerated air dryer is used for refrigerating and drying compressed air to obtain refrigerated dried high-pressure air; the ice scrapping system is used for scrapping dry ice blocks into dry ice particles or dry ice powder, and the dry ice particles or the dry ice powder can be mixed with the refrigerated dried high-pressure air through the pipelines and then are injected at a high speed through the feeding and injecting pipe. Therefore, the force produced by volume expansion of the dry ice particles during being sublimated from a solid state into a gaseous state and the impacting force produced by the dry ice particles along with high-speed airflow are utilized to remove excessive flashes and burrs.