36results about How to "Realize continuous pouring" patented technology

The invention belongs to the technical field of gutter construction, and particularly discloses one-step forming and construction equipment and a construction method for a gutter. The construction equipment comprises walking tracks arranged on tops of slopes on two sides of the gutter side by side, idler wheels in rolling fit with the walking tracks, a limit platform supported among all the idler wheels, an electric generator, a vibrating table, a feed bin, a control console for controlling the vibrating table, and a setting steel mould fixed below the limit platform and matched with the gutter, wherein the electric generator, the vibrating table and the feed bin are fixed on the limit platform. According to the construction method, multiple procedures such as material distribution, spreading, vibrating and leveling can be completed in one step, man power is saved, and the spreading quality and efficiency are improved. Continuous concrete pouring of the gutter is realized, one-step forming is realized, concrete pouring of the gutter of a roadbed is completed in a high quality and high efficient way, and the integrality of a concrete structure is effectively ensured.

The invention relates to the field of steel smelting, in particular to low-carbon aluminum-containing steel and a smelting control method thereof. The method comprises the following steps of controlling the endpoint carbon content in molten steel to range from 0.08 percent to 0.12 percent during converter tapping; carrying out decarburization treatment on the molten steel by adopting a vacuum degassing process; adding aluminum into the molten steel for carrying out deoxidation; and after refining is finished, conducting calcium treatment on the molten steel. The carbon content in the converterendpoint molten steel is controlled to range from 0.08 percent to 0.12 percent , so that the oxidability of the molten steel and the erosion of the high-temperature molten steel to a furnace lining are reduced, and the service life of a converter is prolonged. Meanwhile, an oxygen source can be brought to natural decarburization under the subsequent vacuum degassing condition, and conditions arecreated for VD natural decarburization. A VD treatment process is adopted for decarburization, so that carbon is lower after decarburization is finished. The aluminum is added for deoxidation, so thatthe deoxidation efficiency can be improved, and the deoxidation speed is high. The deoxygenation of refining slag is facilitated. After LF treatment is finished, the molten steel is subjected to calcium treatment, inclusions can be subjected to denaturation treatment, so that low-melting-point calcium aluminate is formed, and the castability of the molten steel is improved.

The invention provides a clay tunnel steel lining concrete pouring anti-floating structure and a construction method. A steel lining is arranged in a clay tunnel; two semi-annular steel arch supports are arranged on the inner wall of the tunnel and connected at the waist of the tunnel through a splicing plate structure; the steel arch supports are arranged in a concrete layer on the inner wall of the tunnel; a concrete bottom plate is arranged at the bottom of the tunnel; I-shaped steel is arranged in the concrete bottom plate; a nail plate is arranged at the top arch position of the tunnel; the splicing plate structure, the I-shaped steel and the nail plate are connected with a stiffening ring of the steel lining; and a telescopic combined supporting structure is arranged in the steel lining. Various construction defects caused by layered pouring and common steel lining inner supports are overcome, concrete pouring buoyancy can be effectively resisted, continuous pouring of backfill concrete is achieved, and damage to the inner surface of the steel lining and secondary painting of anti-corrosion materials during inner support installation are avoided.

The invention discloses a construction method of an air coating material with an additionally-added synergist in a road. The construction method includes the following steps of (1) construction site preparation, (2) concrete synergist preparation, (3) concrete slurry preparation, (4) foam preparation, (5) foam concrete preparation, (6) foam concrete pouring, and (7) foam concrete curing. By the adoption of the construction method of the air coating material with the additionally-added synergist in the road, the use amount of cement can be reduced, the hydration degree of cement minerals is increased, the number of gels is increased through promotion of hydration of the minerals difficult to hydrate, and the strength of foam concrete is improved. Meanwhile, by the adoption of a constructionprocess of the cast-in-place foam concrete, continuous pouring can be simply, conveniently and efficiently achieved, and the pouring quality of the cast-in-place foam concrete meets the site construction requirements.

The invention belongs to the technical field of steelmaking, and relates to a rare earth steel production method for preventing a continuous casting nozzle from nodulating. The method comprises the procedures of electric arc furnace primary smelting, eccentric bottom tapping and deoxidation, furnace rear slagging-off, LF furnace slagging refining, RH vacuum refining, soft blowing treatment and continuous casting. In the electric arc furnace primary smelting procedure, furnace charge is direct reduced iron and low-sulfur waste steel, and the sulfur content in terminal steel of an electric arc furnace is controlled to be smaller than or equal to 0.006%; the eccentric bottom tapping technology is adopted, the slag amount of tapping is reduced, meanwhile, deoxidation is conducted in the tapping process, and the oxygen content in the deoxidized steel is smaller than or equal to 0.001%; in the furnace rear slagging-off procedure, slag formed in the electric arc furnace tapping process is removed; pre-melted refining slag and lime are added into an LF refining furnace again for slagging refining, the sulfur content in steel is controlled to be smaller than or equal to 0.0020% after LF refining is completed, and the oxygen content in the steel is controlled to be smaller than or equal to 0.001% in the LF refining process; a rare earth alloy is added in the RH vacuum refining process, and the nitrogen content in steel in the process is controlled to be smaller than or equal to 0.003%; and in the continuous casting process, argon is adopted for whole-process sealing protection, and the continuous casting nitrogen increasing amount is controlled to be smaller than or equal to 0.0003%.

The invention provides a building construction method of a modular house. The building construction method comprises the steps of S1, design of the modular house; S2, main body production; S3, foundation arrangement; S4, erection of embedded parts; S5, connection of stand columns; S6, laying of ground beams; S7, splicing of wall bodies; S8, installation of roof components; and S9, pouring of foam concrete. The preparation steps of the modular house are simple, cavities in the wall bodies are poured by adopting the foam concrete, materials are saved, continuous pouring is achieved, the pouring time is shortened, the building cost is reduced, waste materials in the construction process are few, and people can live in the house without being decorated again after construction.

The invention provides continuous casting covering slag for high-titanium steel. The continuous casting covering slag comprises the following components: 0-6 wt% of CaO; 20-30 wt% of SiO2; 0-10 wt% of Fe2O3; 5-14 wt% of F; 3-10 wt% of LiO2; 35-50 wt% of BaO; 3-15 wt% of C; and the balance of impurities. Aiming at the high-titanium steel, the crystallizer covering slag suitable for continuous casting pouring is designed and developed; according to the covering slag, the reactivity of substances such as Fe2O3, Al2O3, Na2O and B2O3 with titanium in the steel is effectively reduced, so that the performance of the covering slag is stabilized; and in addition, the content of CaO in the covering slag is greatly reduced, the production of high-melting-point perovskite is effectively prevented, and the performance stability of the high-titanium steel in the pouring process is ensured. The invention further provides a preparation method of the continuous casting covering slag for the high-titanium steel.

The invention discloses a symmetrical synchronous layered distributing and casting system for an open trench tunnel lining. The symmetrical synchronous layered distributing and casting system for theopen trench tunnel lining comprises a central aggregate groove, multiple casting tumbling barrels, multiple silos, aggregate funnels and multiple distributing sliding chutes, wherein the central aggregate groove is fixed to the center of a lining formwork arch apex and is provided with multiple independent discharge holes; the multiple casting tumbling barrels are fixed into a lining side wall atintervals; the multiple silos are arranged in a layered way; the aggregate funnels are in one-to-one correspondence to the casting tumbling barrels; the lower end ports of the aggregate funnels communicate with the upper end ports of the casting tumbling barrels; the multiple distributing sliding chutes correspond to the multiple discharge holes; and the lower ends of the distributing sliding chutes are located at upper openings of the aggregate funnels or located at distributing trough ports of the silos located on one same layer. The invention further discloses a symmetrical synchronous layered distributing and casting construction method for the open trench tunnel lining. The symmetrical synchronous layered distributing and casting system and the symmetrical synchronous layered distributing and casting construction method for the open trench tunnel lining provided by the invention have the advantages of high construction efficiency, simplicity in operation, reduction in labor intensity, capability of realizing semi-automatic casting, cleanliness in construction due to no concrete drop on site, environment protection without pollution, and the like.

The invention discloses a method for pouring a large-area above-water support. The specific technical scheme is: ground pump pipe arrangement, concrete pouring of the first concrete support, concrete pouring of the next concrete support and pouring of the remaining concrete supports. The large-area water support pouring method proposed by the present invention is simple and easy to operate. After each support is poured, workers do not need to re-distribute pipes, and only need to manually switch the stop valve to realize continuous pouring of large-area water support concrete. The pouring time is greatly saved, and the construction cost of the project is reduced.

The invention discloses a free face transverse slip form concrete pouring device including afixing device, the lower end of the fixing device is fixedly connected with a first pulley; the middle partof the fixing device is connected with a steel box girder bridge floor; a guide rail part is fixedly connected to the upper end of the fixing device, a guide rail is fixedly connected to the lower portion of the guide rail part, a second pulley is movably connected to the guide rail, a support is fixedly connected to a middle shaft of the second pulley, a steel rope is fixedly connected to the support, and a reinforced concrete formwork is fixedly connected to the lower end of the steel rope. According to the device, through cooperative use of the first pulley and the second pulley, continuouspouring work of free face concrete is completed, the formwork dismounting process is simple, and the construction period is short.

The invention provides continuous pouring equipment for a tunnel special-shaped sewage ditch. The continuous pouring equipment comprises a vehicle body, a template, a hopper and a controller, a supporting frame and a lifting mechanism are connected to the trolley body, a hopper is fixedly connected to the supporting frame, walking wheels are fixedly connected to the lower side of the trolley body, an ejector rod and a pull rod are connected to one side of the trolley body, a sleeve is connected to the pull rod, and the sleeve is connected with a formwork. And the template is respectively provided with a feeding hole and is fixedly connected with a sleeve rod. The equipment is small in size, can be suitable for continuous pouring operation of the sewage ditch in a limited space, has the advantages of being easy to operate, time-saving, labor-saving, high in working efficiency and the like, and realizes the function of rolling and forming the sewage ditch at a time.

The invention discloses a subway engineering inspection pit stand column concrete construction auxiliary device and a using method, and relates to the technical field of concrete pouring tool equipment. The device comprises a hopper car and a funnel. The hopper car comprises a car frame, a hopper arranged on the car frame and used for storing a concrete slurry, and a walking assembly arranged below the car frame. At least two discharging openings capable of controlling opening and closing states are symmetrically arranged in a bottom surface of the hopper with the walking direction of the hopper as a symmetry center. The walking assembly comprises at least four pulleys which are arranged below the car frame and are matched with rails; and during usage, the funnel is mounted between an inspection pit stand column and the discharge openings and is connected with the inspection pit stand column and the discharge opening. The invention further discloses a using method of the device. The device is simple in structure and small in occupied area, and concrete construction of the subway engineering inspection pit stand column can be achieved without additionally arranging a concrete pumping-in device or a concrete storage device.

The invention relates to a crystallizer system for continuously casting double-flow plate blanks. The crystallizer system comprises a frame assembly, wide-surface copper plate assemblies, narrow-surface copper plate assemblies, a middle insertion plate assembly, a width adjusting device, a clamping device and a foot roll assembly; the frame assembly comprises a left frame, a right frame ,an inner arc frame and an outer arc frame, and the left frame is respectively connected with the left side of the inner arc frame and the left side of the outer arc frame; the right frame is respectively connected with the right side of the inner arc frame and the right side of the outer arc frame; and the wide-surface copper plate assemblies comprise inner arc copper plate assemblies and outer arc copper plate assemblies which are provided with water channels, the outer arc copper plate assemblies are connected with the inner side surface of the outer arc frame, and the inner arc copper plate assemblies are connected with the inner side surface of the outer arc frame. The crystallizer system has the advantages that the crystallizer system is important composition equipment of a continuous casting machine for double-flow plate blanks, liquid steel is filled into two independent cavities of the crystallizer system, and the double-flow plate blanks are subjected to continuous casting via working procedures such as cooling, vibration stripping and throwing; and the crystallizer system is low in production cost, and resources are saved.

The invention discloses a continuous pouring method for preventing cracking of an arch part of large-volume concrete of a huge-span underground cavern. The continuous pouring method comprises the following steps that first, pouring pipes are arranged in the nearly horizontal section of a vault every 5+/-0.5 m in the transverse direction and every 3+/-0.5 m in the longitudinal direction, the distance between the pouring pipes and the vault is 20+/-2 cm, and the height difference between the pouring pipes at the leftmost edge and the rightmost edge and the pouring pipe in the central line is 30-70 cm; second, self-compacting concrete is prepared; third, the side wall concrete on the left side and the right side of the huge-span underground cavern is poured firstly, and the longitudinal length of each time of concrete pouring is 10+/-0.5 m; fourth, the self-compacting concrete is adopted for synchronously pouring arch shoulder sections on the left side and the right side of the arch part;and fifth, the self-compacting concrete is adopted for pouring the nearly horizontal section of the vault, symmetrical pouring is conducted from the edge to the middle in the transverse direction, sequential pouring is conducted from inside to outside in the longitudinal direction, and the pouring pipes are reserved in the concrete after pouring and not taken out. The hydration heat peak value ofthe concrete in the nearly horizontal section of the vault is decreased, so that cracking is avoided, and the engineering quality and the construction efficiency of the huge-span underground cavern are improved.

The invention discloses an upper mould casting head device of a signal connector mould device. The upper mould casting head device comprises an upper main connecting block, wherein an upper mounting connecting block is fixedly arranged on the top surface of the upper main connecting block; a plurality of upper moulds are mounted on the bottom surface of the upper main connecting block; a casting main component is nested in a mounting groove in the upper mounting connecting block, and the bottom ends of branch casting pipes of the casting main component sequentially extend out of the bottom surface of the upper mounting connecting block and the bottom surface of the upper main connecting block and are inserted into casting through holes in the middles of the upper moulds. Continuous castingis realized as the casting main component adopting the plurality of branch casting pipes simultaneously communicates with the casting through holes of the plurality of upper moulds.