37results about How to "No cracking problems" patented technology

The invention relates to a pouring sealant for pouring a limited-angle motor stator and a pouring method. The pouring sealant comprises the components: 10 parts of epoxy resin, 1.2-1.6 parts of a component with curing and promoting effects, 5-15 parts of a filler component, and 1.5 to 5 parts of an epoxy toughening agent. The pouring method comprises the steps: 1, mounting and fixing a limited-angle motor stator into a potting mold; 2, putting the limited-angle motor stator after mold mounting into a drying oven for preheating; 3, preparing the pouring sealant according to the proportion of the components; 4, putting the pouring sealant into vacuum equipment to remove internal bubbles; 5, injecting the pouring sealant into the upper end face of the limited-angle motor stator through a sealant injection through hole of an upper mold, and achieving pouring; 6, removing bubbles in the mold in a vacuum environment; 7, putting the mold into an oven, carrying out thermocuring treatment, andcooling along with the oven after curing; and 8, disassembling the pouring mold, taking out the limited-angle motor stator, and processing to remove redundant colloid. According to the invention, theproblems of cracking of the pouring sealant and cracks among the pouring sealant, the punching sheet and the shaft sleeve are solved.

The invention discloses an X80 pipeline steel plate with thickness larger than or equal to 26.4 mm used in a longitudinal submerged arc welding pipe and a production method thereof. The X80 pipeline steel plate comprises the following components in percentage by weight: 0.035-0.055% of C, 0.15-0.30% of Si, 0.25-0.55% of Mn, less than or equal to 0.012% of P, less than or equal to 0.0012% of S, less than or equal to 0.006% of N, 0.065-0.085% of Nb, 0.010-0.025% of Ti, 0.15-0.30% of Cr, 0.02-0.05% of Al, 0.08-0.15% of Mo, 0.1-0.2% of Cu and 0.30-0.50% of Ni. The production method comprises the steps that casting blanks are stacked and slowly cooled for more than 24 h; and the casting blanks are heated, rough rolled, fine rolled, cooled, straightened, tempered, straightened again and then isair cooled to room temperature on a cooling bed. By adopting the production method, the anti-acid performance is good; the yield strength (horizontal) : Rt 0.5 is greater than or equal to 555 MPa; Rmis greater than or equal to 630 MPa; A50.8 is greater than or equal to 25%; a pipe wall is not cracked with increasing conveying pressure; the thickness is greater than or equal to 26.4 mm; structureuniformity is good; Rt0.5 / Rm is less than or equal to 0.91; V-notch impact work KV2 is greater than or equal to 250 J at minus 20 DEG C; the drop weight tear tenacity DWTT:SA is greater than or equalto 85% at minus 15 DEG C; and the Vickers hardness HV10 is less than or equal to 250.

The invention discloses a construction method of a soft soil anti-collapse concrete road surface. The construction method is characterized by comprising the following steps of: (1) treating a soft soil matrix: excavating sludge, filling slags, and performing layered rolling for levelling; (2) preparing a semi-rigid base course material: wherein the semi-rigid base course material is cement-stabilized macadam with a cement content of 5%, and is obtained by uniformly mixing cement, water, macadam and stone powder in a mass ratio of the cement to the water, to the macadam and to the stone powder being 102 to 120 to (1390-1400) to (650-660); and (3) performing construction of a semi-rigid base course: laying the cement-stabilized macadam obtained in the step (2) on the soft soil matrix treated in the step (1), performing paving, performing rolling and performing curing. The construction method disclosed by the invention aims to solve the technical problem of providing the construction method of the soft soil anti-collapse concrete road surface, which is good in firmness, few in cracks and high in construction speed, and besides, road materials can be saved, so that the paving cost is further reduced.

This invention provides a method for manufacturing micro-condensers including: providing a base with at least one dielectric layer, forming a first film on the dielectric layer, etching said film to form at least one micro-convex block, forming a second film on the surfaces of the micro-convex block and the dielectric layer to form the micro-condenser with the convex block to be used in high temperature without processing an extra protecting layer.

The invention discloses a sintering cooling device. The sintering cooling device comprises a cooling furnace body, multiple cooling pipes are arranged in the cooling furnace body, and are seamless pipes, two ends of the cooling pipes penetrate through the corresponding inner wall of the cooling furnace body to the outer portion, one ends of the cooling pipes are connected with a water inlet main pipe, and the other ends of the cooling pipes are connected with a water outlet main pipe. The sintering cooling device has the higher service life, no leakage point exist in the device, and maintaining is facilitated.

The invention provides a quantum dot LED and a preparation method, and the quantum dot LED comprises a pair of electrodes arranged side by side at intervals; a flip-chip LED chip which is disposed onthe electrode and electrically connected with the electrodes; a quantum dot interlayer disposed on the flip-chip LED chip; a packaging layer which covers the electrodes, the flip-chip LED chip and thequantum dot interlayer; and a white glue layer surrounding the packaging layer. Through the setting of the quantum dot interlayer, the LED can prevent the invasion of the quantum dot layer and the LED chip by the external water and oxygen, provides an environment for isolating water and oxygen for the quantum dots, and facilitates the improvement of the luminous efficiency and the prolonging of the service life of the quantum dots. The LED is provided with the organic layer of the structure, and improves the light-emitting efficiency. The inorganic packaging layer is formed by atomic layer deposition, and the LED can be flat in surface and uniform in thickness. A film cannot crack.

The invention proposes a fast-curing constrained structure damping coating and a preparation method thereof, which belong to the technical field of special functional materials. Chain agent, glycol, dispersant, defoamer, substrate wetting agent, adhesion promoter, first catalyst, damping pigment and filler; constraining layer is two-component solvent-free polyurethane coating, including component A: isocyanate , polyol, liquid flame retardant; B component: amino-terminated polyether, polyether polyol, flame retardant pigments and fillers, hollow microspheres, chain extender, second catalyst, antioxidant, dispersant, water remover , Color paste. The damping paint of the present invention, the curing speed of the damping layer and the constraining layer can be adjusted, and can be quickly cured in winter construction without sagging. The material can not only be applied to the vibration and noise protection in the field of ships, but also can be widely used in rail transit, automobiles, etc. , construction machinery and other fields.

The invention discloses UHPC batching and mixing equipment. The UHPC batching and mixing equipment comprises a rack workbench, a first batching device and a second batching device are arranged on thetwo sides of the rack workbench, a first elevator is arranged on the first batching device, and a second elevator is arranged on the second batching device; and a mixing and stirring device which is communicated with the first elevator and the second elevator, a steel fiber vibration dispersing device arranged above the mixing and stirring device and a finished product loading and conveying devicearranged below the mixing and stirring device are arranged on the rack workbench. A steel fiber conveying belt is arranged on the steel fiber vibration dispersing device. The UHPC batching and mixingequipment has the effects that the UHPC material mixing production process is automatic, the machining efficiency is improved, and the construction environment is improved.

The invention discloses a water-based environment-friendly texture wood coating, which comprises emulsion, pigment, filler, auxiliary agent and water. The invention also discloses a preparation method of the water-based environmental-friendly textured wood coating. It has the following advantages and economic benefits: (1) After construction, the three-dimensional effect is strong, and there will be no collapse or deformation of the shape, and the thick paint film will not crack; No delamination phenomenon; (3) Two kinds of emulsions are used for compounding, which has excellent flexibility, and there will be no cracking problems when matched with primers and topcoats. At the same time, the product has low VOC, low odor, and excellent environmental performance; (4) Different additives are used Thickener matching, low brushing resistance, easy construction, high viscosity and easy spraying roller coating, can adapt to various construction methods of on-site brushing, spraying, and roller coating; (5) It can meet the needs of American antique coating art on wood in the market , has a large market value.

The invention discloses a prefabricated section bridge pier and its application in bridge construction. The prefabricated section bridge pier includes a bridge pier body and a sheath; The parts include a connecting steel plate fixed at the end of the pier body and a PBL connecting cylinder passing through the connecting steel plate. The PBL connecting cylinder is provided with a shear connection hole, and the PBL connecting cylinder is inserted into the shear connection hole at one end of the pier body. A perforated rib, the shear connection hole extending out of the outer end of the pier body is equipped with a second perforated rib; the side wall of the steel liner is provided with a vertical wall hole, and the side wall of the pier body is provided with a mounting hole; the sheath includes two pieces The sheath plate is provided with fixing holes opposite to the vertical wall holes. The segmental bridge pier in the present invention can be quickly assembled with low construction risk, and has small initial defects, guaranteed bearing safety, high resource utilization rate, less environmental pollution, and economical durability.

Provided in the present invention is a quantum dot LED and a manufacturing method, the quantum dot LED comprising: a pair of electrodes provided side by side and spaced apart; a flip-chip LED chip provided on the electrodes and electrically connected to the electrodes; a quantum dot interlayer provided on the flip-chip LED chip; a packaging layer encapsulating the electrodes, the flip-chip LED chip, and the quantum dot interlayer; and a white glue layer surrounding the packaging layer. In the present invention, a quantum dot interlayer is provided, preventing external moisture and oxygen from corroding a quantum dot layer and an LED chip, providing an environment for insulating moisture and oxygen for quantum dots, and aiding the improvement of the luminous efficiency and service life of quantum dots; an organic layer of a micro-nano structure is provided, improving the light extraction efficiency; and an inorganic packaging layer is formed by means of atomic layer deposition, so that the inorganic packaging layer can have a flat surface and a uniform thickness, and the problem of film layer cracking does not occur.

The invention discloses a molding process for embedding a large-piece special-shaped object in a transparent resin. The molding process comprises the following steps that (1), the transparent resin of47.286%-52.264% in proportion, transparent barras of 47.286%-52.264% in proportion, an accelerator of 0.1425%-0.1575% in proportion and a hardening agent of 0.285%-0.315% in proportion of raw materials are prepared; (2), the raw materials are mixed and uniformly stirred, and the raw materials are putted into a vacuum machine for vacuumizing; (3), the large-piece special-shaped object is fixed ina mold; (4), the embedding resin obtained in the step (2) is poured into the mold of the step (3) and is placed in the vacuum machine for vacuumizing; (5), standing is carried out for a period of time; (6), the steps (1)-(2) and (4)-(5) are carried out circularly for a plurality of times to enable the embedding resin to completely immerse the large-piece special-shaped object; and (7), demolding.According to the molding process, a large number of tests are carried out to obtain a scientific ratio of the embedding transparent resin and an accurate embedding and molding process, so that the embedding technology of the large-piece special-shaped object is realized, the success rate is high, and cracks are not exists; According to the technical scheme, the shape color of the special-shaped object embedded in the transparent resin is vivid, the resin transparency is high, and various details of the special-shaped object can be clearly observed.

It is a display and its detachable light source structure that comprises one light tube, one electrode, one first conjunction, one wire and second conjunction, wherein, the electrode is connected with light tube and the first conjunction comprises a first surface. The second conjunction comprises one-second surface and makes the wire electrically connected with the light tube through the second surface and first surface contacting.

The present invention provides an outer grid wall board mechanical loading worker, including cardboard molds and mobile loading systems; cardboard molds include mold bases, horizontal card boards and pressure plates;Pressing activity components, loading rod components and positioning connection structures; the stuck plate mold has a loading system base on the left and right sides, and the positioning connection structure on one side of the loading system base; two sets of pressure activity components on the loading system base; left and right; left and rightThe pressure activity components on both sides are connected through the loading rod component; the pressurized activity component includes the first liquid pressure cylinder.The present invention also provides a method of loading the outer grid wall board mechanical loading, which uses the aforementioned external mesh wall board mechanical loading.The present invention avoids part of the defects loaded by traditional mechanical methods, the cost is greatly reduced, and the mobile loading system with the adjustable surface can meet the production needs of multi -specification wall boards.