41results about How to "Strength reached" patented technology

The invention discloses a restoring method of oil pumping rod rigidity in the oil exploitation technique domain, which is characterized by the following: adapting alternative quenching method to restore the oil pumping rod; improving the rod rigidity; reaching new rod rigidity level; changing the oil pumping rod from grade C to grade D; making the old oil pumping rod of grade D more than 980 MPa.

The invention relates to a prefabricated component, in particular to a forming die of a prefabricated component. The invention aims at solving the technical problem to provide the forming die of the prefabricated component. The forming die of the prefabricated component comprises a support frame, a control screen, a motor, a conveying pipe, a cover plate, an air pump, a feeding mechanism, a variable-speed vibrating mechanism, a vibrating table, a flatly spreading mechanism, a compacting mechanism, an ascending and descending plate, a first electric push rod and a discharging opening, wherein the control screen is arranged at the upper side of the middle part of the left end inside the support frame; and the motor is arranged at the right side of the bottom end inside the support frame. Theforming die of the prefabricated part achieves the effects that the mechanical operations of feeding, vibration and press polishing on a die of the prefabricated component is realized; the die is enabled not to be damaged when concrete is added into the die; the overflowing waste cannot be caused; a layering phenomenon is enabled to be avoided during the vibration; the vibration completion degreeis improved; no air bubble and no crack existing on the surface are ensured; the intensity of the prefabricated component is improved; and meanwhile, the mass production can be realized.

A proces for preparing the grog used for producing aluminium oxide by sinter method includes pulverizing bauxite, proportionally mixing it with concentrated carbon liquid, lime, sodium carbonate and other circulating materials, ball grinding to obtain raw slurry, drying, shaping, stacking in kiln and calcining. Its advantages are less environmental pollution, low energy consumption and high productivity.

The invention relates to the technical field of steel rolling, and particularly relates to continuously hot-galvanized high-strength steel and a production method thereof. The high-strength steel comprises the following chemical components in percentage by mass: 0.05-0.15% of C, 0.6-1.5% of Mn, 0.10-0.50% of Si, less than or equal to 0.015% of P, less than or equal to 0.018% of S, 0.03-0.07% of Als, 0.05-0.10% of Ti, and the balance of Fe and unavoidable impurities. The invention also provides the production method of the hot-galvanized high-strength steel S550GD + Z. The production method comprises the steps of steelmaking, hot rolling, cold rolling, continuous hot galvanizing, and finishing. According to the production method of the continuously hot-galvanized high-strength steel provided by the invention, a required strength is achieved through controlling the components, the coiling temperature, the soaking temperature of continuous hot galvanizing, and the ductility of a finishing machine. The method greatly increases the plasticity of finished products, and avoids resource wasting caused by temperature transition arising from low-temperature annealing in a conventional continuous hot galvanizing production method.

The invention relates to a quick-setting and rapid-hardening road pavement repair concrete with super-early strength and a preparation method thereof. The quick-setting and rapid-hardening road pavement repair concrete is prepared from the following raw materials in unit usage amount (kg/m<3>): 320 to 350 parts of gel material, 730 to 790 parts of river sand, 920 to 960 parts of crushed stone, 250 to 350 parts of cement, 3 to 4 parts of initiator, and 1.5 to 2 parts of accelerant. The quick-setting and rapid-hardening road pavement repair concrete with super-early strength has the advantages that the content of gel material is 320 to 350kg/m<3>; the content of gel material is low, the cost is low, the mechanical property is better, the shrinkage rate is little, the 6h compressive strength is no lower than 30MPa, the total shrinkage rate is 0.03 to 0.05%, the 7d compressive strength is higher than 60MPa, the 28d compressive strength is higher than 72.6MPa, and the requirement on road curing conditions is low.

According to an elevated half-tube intelligent five-rail high-temperature superconducting maglev train system, a plurality of magnetic circuits of four electromagnetic rails of an elevated half-tube intelligent five-rail subsystem are linearly arranged and connected with a plurality of single coils in series in the same direction, and the four electromagnetic rails generate a continuous and uniform magnetic field in the rail direction; pinning magnetic fluxes generated by high-temperature superconducting blocks in 12 monitoring type intelligent Dewar are correspondingly arranged on the four electromagnetic rails in the half tubes respectively, the four electromagnetic rails are surrounded, and the acting force of automatic suspension, automatic stabilization and automatic guiding of the maglev train is enhanced; a plurality of section converters supply power under the control of a photoelectric proximity switch and a wireless remote control receiving module, the electromagnetic field intensity of the electromagnetic rails and the middle electromagnetic rail in the four sections can be controlled, the electromagnetic field can be turned off, and the four electromagnetic rails and the middle electromagnetic rail outside the sections are all in a power-off state; the electromagnetic rails in the interval generate a moving magnetic field to drive a linear direct-current permanent magnet motor rotor; and a linear alternating current generator rotor synchronously induces alternating current output.

The invention discloses an environment-friendly rectangular composite plate comprising a surface plate, a bottom plate, and a central layer arranged between the surface plate and the bottom plate. The central layer is a honeycomb paper core. The surface plate and the bottom plate are respectively adhered with the central layer by using glue. The surface plate and the bottom plate both comprise at least one layer of paperboard or paper skin. The central layer also comprises a rectangular frame arranged on the periphery of the honeycomb paper core and glued with the honeycomb paper core. The thickness of the frame is same as that of the honeycomb paper core. According to the invention, the central layer is the honeycomb paper core, and the surface plate and the bottom plate are paper skin or paperboard. The three are all sourced from paper products, such that advantages of light weight and low cost are provided. Wood is not directly used, such that forest resource protection is promoted. The strength of the composite plate reaches that of a wood composite plate or even higher.

The invention discloses novel frost-resistant concrete. Raw materials comprise cement, stones, yellow sands, melon seed-shaped drug slices, coal gangue, phosphorus slag powder, zeolite powder, rubber powder, a carboxylated butadiene-styrene rubber emulsion, cellulose, a water reducer, an accelerator, a compound pumping aid, an alkaline-aggregate reaction inhibitor, sodium thiosulfate, sodium acetate and water. The compound pumping aid is obtained by mixing, grinding, crushing and screening calcium lignosulphonate, a polycarboxylate efficient water reducer, anhydrous sodium sulfate, sodium abietate, hydroxyethylmethylcellulose and coal ash. The novel frost-resistant concrete is high in strength and good in frost-resistance.

The invention discloses a high-plasticity and easy-to-be-eliminated extrusion molding agent. The extrusion molding agent is prepared by the following raw materials, by weight: polyvinyl butyral 10-20%, butylcarbitol (diethylene glycol monobutyl ether) 60-70%, cocinic acid (yituomin) 1-5%, DBP (dibutyl phthalate) 1-5% and paraffin 10-15%. The extrusion molding agent provided in the invention provides a pressed shape with a fairly good strength and plasticity. With the extrusion molding agent provided in the invention, qualified rate of products is improved and production period of the extrusion products is shortened.

The invention relates to a composite floating body material structure which comprises a polystyrene foam inner core (1). The composite floating body material structure is characterized in that inserting type cushion blocks (5) are distributed on the polystyrene foam inner core (1); transverse ribs (3) are arranged in positions corresponding to the cushion blocks (5); the transverse ribs (3) and longitudinal ribs (4) are uniformly distributed around the polystyrene foam inner core (1); the transverse ribs (3) and the longitudinal ribs (4) are connected together in a bundling mode; a polyurethane foamed protection layer (2) is arranged on the outer layer of the polystyrene foam inner core (1); the transverse rib (3) and the longitudinal ribs (4) are wrapped with the polyurethane foamed protection layer (2), therefore, a composite floating body material structure is formed. The transverse ribs (3) and the longitudinal ribs (4) are partitioned for certain distances by the polystyrene foam inner core (1). Reinforcing steel ribs are added to the surface of a polystyrene foam material, and a polyurethane foaming agent is injected, so that the strength, the toughness and the buoyancy are improved.

The invention relates to a manufacturing method of a greenhouse thin film, belongs to the technical field of agricultural materials, aims to solve the problem that an existing greenhouse thin film is poor in pulling resistance, and provides the manufacturing method of the greenhouse thin film. The method comprises the following steps: enabling a plurality of plastic film pressing belts and plastic thin films to synchronously move towards different procedures under the effect of a traction force, wherein the plastic film pressing belts are parallel to one another, and the plastic film pressing belts are flat; enabling each plastic film pressing belt and the corresponding plastic thin film to be subjected to thermal combination treatment by a thermal combination procedure; enabling the heating temperature of a side of each plastic film pressing belt to be 220-240 DEG C; enabling the heating temperature of a side of each plastic thin film to be 160-190 DEG C; and cooling every plastic film pressing belt and the corresponding plastic thin film after every plastic film pressing belt and the corresponding plastic thin film are subjected to thermal combination integrally so as to obtain the corresponding greenhouse thin film. The binding fastness of every plastic film pressing belt and the corresponding plastic thin film is improved integrally, and therefore, the pulling resistance is improved.

The invention relates to the field of excimer lasers, in particular to a circuit for triggering an excimer laser to generate plasma. The circuit comprises a device for triggering the excimer laser and a pulse circuit for driving the excimer laser. The device for triggering the excimer laser comprises a signal acquisition module and an electric signal processing module. The pulse circuit for driving the excimer laser comprises a trigger pulse circuit, and the trigger pulse circuit comprises a first power supply unit used for supplying power to the trigger end of the gas laser. The first power supply unit comprises a tenth capacitor and a charging power supply used for charging the tenth capacitor. Therefore, the time that the seed light reaches the excimer laser can be ensured to be synchronous with the discharge of the excimer laser. Therefore, under the mutual matching action of the transistor and the tenth capacitor, a high-voltage pulse signal with a fast front edge and low jitter can be generated and sent to the excimer laser, so that the working performance of the excimer laser is ensured.

The invention relates to the field of excimer lasers, in particular to a device for triggering an excimer laser. The device comprises the following components: a signal collection module is used for acquiring a trigger signal of a light beam laser which sends seed light to a gas laser; an electric signal processing module is used for receiving and processing the trigger signal, collected by the signal collection module, of the light beam laser, and inputting the processed trigger signal to the enabling end of the gas laser, so that the time when the seed light reaches the gas laser is synchronous with the discharge time of the gas laser; and the discharge time of the gas laser is controlled by the enabling end of the gas laser. Therefore, the time that the seed light reaches the excimer laser can be ensured to be synchronous with the discharge of the excimer laser, so that the excimer laser can be used as a laser amplifier.