33results about How to "Improve the quality of anticorrosion" patented technology

The invention relates to a polyethylene coated steel pipe and on-line method and apparatus for preparing same. Steel pipe is employed as base material for polyethylene coated steel pipe, and the outer surface of the steel pipe is coated with jointless annular polyethylene gummed tape. Production facilities of the pipe includes steel pipe shot-blast rust cleaning machine comprised of a rotating cylinder bracket, a rotating cylinder, a feeding wheel, a support wheel, a feeding worm wheel speed reducer, a feeding direct current dynamo, a high-frequency induction heating coil, a driving worm wheel speed reducer, a driving AC motor and a electrical control cabinet, and a steel pipe outer anticorrosion coating machine comprised of a induction heating transformer, a walking frame, a swing frame, a rotating frame, a winding device, a supporting frame, a low-voltage electrical casing and a controller. In pipeline installation locale, the steel pipes are welded into pipelines after derusted by the steel pipe shot-blast rust cleaning machine, the steel pipe outer anticorrosion coating machine is nested on the pipeline and carries out helical motion, after high-frequency induction heating on the steel pipe, the spray head injects the epoxy powder on outer surface of the steel pipe, after high-frequency induction heating of the belt-winding cylinder, adhesive tape and polyethylene gummed tape pulled out from the winding device become hot tapes, by helical motion of the steel pipe outer anticorrosion coating machine along pipeline centre-line, the adhesive tape and polyethylene gummed tape are coated on the outer surface of the steel pipes.

The invention relates to a high-seawater-resistant epoxy coating suitable for ocean platforms and ships as well as a preparation method of the high-seawater-resistant epoxy coating. A liquid A is composed of bisphenol A liquid epoxy resin, C9 petroleum resin, an epoxystearic acid alkyl ester, a polyurethane modified high-molecular compound, a modified hydrogenated castor oil, a silicone polyether, a nonionic surfactant, a mixture of dimethyl polysiloxane and hydrophobic silica, aerosol, micaceous iron oxide gray, quartz powder, silica micropowder, titanium dioxide powder, carbon black and aluminium triphosphate. A liquid B is a phenolic aldehyde amine curing agent with an amine value of 305 to 335. When the epoxy coating is used, the liquid A and the liquid B are mixed to form a coating layer which has a good adhesive force with a steel base material and is excellent in seawater resistance, salt spray resistance and cathodic disbonding resistance, so that the anticorrosion quality of ocean steel structures is effectively improved. Thus, the dock repairing of the ocean platforms, the ships and the like due to the failure of the coating layers is reduced.

The invention relates to a cleaning device for the inner wall of a steel pipe for driving flocculent materials to work through wind energy. Blades in a cyclone power working device are mounted on a shaft with a worm, and the blades are provided with fluid channels. The flocculent materials are evenly distributed along the circumferences of the blade and are compressed and fixed through pressing bar compressing devices. The worm on the shaft with the worm in an advancing guide device drives a turbine, the turbine drives a transmission gear for advancing, the transmission gear drives a power wheel to advance, and the power wheel is stably guided and advances at constant speed with the supporting assistance of multiple supporting wheels. According to the cleaning device, fluid output by a pipeline fan flows into the blade channels in the axial direction to drive the blades to rotate, the rotary blades push the steaming-around fluid in the axial direction, pushing of the blades works on the fluid, and the energy of the fluid is increased and discharged in the axal direction. At this moment, the flocculent materials are influenced by the rotating speed to generate centrifugal gravity, the flocculent materials are thrown into an arc through the gravity and scour the inner wall of the steel pipe, and the inner wall of the steel pipe is powerfully cleaned.

The invention provides a cooling method and device for anticorrosion steel pipe manufacturing. The cooling method for anticorrosion steel pipe manufacturing includes the steps that after the first pipe end of a steel pipe enters a cooling region from an anticorrosion working region, a first internal cooling device moves in the axial direction of the steel pipe at the same speed as the steel pipe, a cooling nozzle arrives at the cooling working position and is opened, a belt-shaped telescopic mechanism moves towards the interior of the steel pipe at the same speed as the steel pipe as well, and the cooling nozzle is kept still; when the second pipe end of the steel pipe enters the cooling nozzle position, the cooling nozzle is closed, and the first internal cooling device returns to the initial position for use; and the first internal cooling device and a second internal cooling device alternately conduct interior cooling on steel pipes passing the cooling region continuously. The cooling device applying the cooling method comprises a transmission device, the first internal cooling device, the second internal cooling device and a control system. By means of the cooling method and device, the anticorrosion quality and cooling efficiency of the steel pipes are improved, and production cost is lowered.

The invention discloses a wrapping belt for pipeline repaired opening corrosion prevention and a construction method. The wrapping belt is composed of a hot melting adhesive layer and a PE material layer. The PE material layer and the hot melting adhesive layer are arranged in sequence from the surface to the bottom face, and the side edge of the wrapping belt is a slope. According to the wrapping belt and the construction technology, the product performance and the construction quality stability can be effectively improved, the cooperative construction technology comprising the steps of spraying epoxy primer (formed by curing epoxy powder) to the surface of a pipeline and then adopting a special adhesive (hot melting adhesive) and the special (high-strength) PE material layer for forming the wrapping belt is adopted, the problem of construction quality instability is solved, the anti-corrosion quality and the reliability are improved, and the product service life is prolonged.

The invention belongs to the technical field of metal pipeline corrosion prevention, and particularly relates to a metal pipeline anti-corrosion treatment device. The device comprises a bottom plate; a coating roller fixedly connected with a rotating shaft is assembled in a liquid storage frame; the other end of a connecting rod is fixedly connected with a second rotating piece matched with a first rotating piece in position; a sealing block is slidably assembled in a cavity; a liquid inlet pipe communicated with the cavity is assembled at the lower end of a mounting seat; the other end of the liquid inlet pipe extends into the lower side in the liquid storage frame; the liquid storage pipe is provided with a plurality of nozzles pointing to a coating roller; the upper side of a height adjusting mechanism is in height connection with a fixed cylinder; four ejector rods are each vertically and rotatably provided with a plurality of rollers; and a jacking mechanism matched with the ejector rods is assembled in the fixed cylinder. The outer wall of a metal pipeline is painted instead of manual work, so that the metal pipeline is uniformly painted while the treatment effect is fast, the anti-corrosion quality is improved, the workload is reduced, and the working efficiency is improved.

The invention discloses a bolt surface oiling system. The system comprises a box body, a left box door, a right box door and a controller; a first partition plate and a second partition plate are sequentially and fixedly arranged in the box body from left to right; the first partition plate and the second partition plate sequentially divide the interior of the box body into a first oiling chamber, a drying chamber and a second oiling chamber from left to right; the left box door and the right box door are fixedly installed on the front side of the first oiling chamber and the front side of the second oiling chamber respectively; a set of horizontal guide rails sequentially penetrating through the first oiling chamber, the drying chamber and the second oiling chamber are further installed in the box body; and a first oiling mechanism and a clamping and moving mechanism are arranged in the first oiling chamber. According to the system, a nut, the rod part of a bolt and the head part of the bolt can be subjected to oiling treatment, the labor intensity of workers is reduced to a great extent, and the working efficiency and the overall anti-corrosion quality of a product are improved.

The invention discloses a sealable container anticorrosion technology. In order to solve problems, the technical scheme includes that an anti-corrosion method for a sealable container is further improved, corrosion prevention can be comprehensively performed for the sealable container, the penetrability of liquid is utilized for performing in-place protection for clearances existing in the interior of the sealable container, rotation is utilized for enabling the surface of the interior of the sealable container to be high in quality and even in paint film, the thickness of a paint film is easy to control, and anticorrosion quality can be effectively improved.

The invention discloses a rectangular flue gas duct system without internal supporting rods. The system comprises a flue gas duct body and a plurality of trusses in annular structures, the trusses in annular structures axially and sequentially sleeves the outer wall of the flue gas duct body, and a plurality of supporting hangers are arranged at bottoms of the trusses in annular structures. A plurality of reinforcing ribs are arranged between every two adjacent trusses in annular structures and uniformly and axially distributed on the outer wall of the flue gas duct body, and each reinforcing rib is connected with all of the trusses in annular structures. The system is low in resistance, uniform in flow field of the flue gas duct, low in investment cost and small in floor space, and the problem of proneness to abrasion, dust accumulation and shedding of the internal supporting rods is avoided.

The invention provides a cooling method for anti-corrosion steel pipe manufacturing, and a cooling device. The cooling method for anti-corrosion steel pipe manufacturing includes the steps that after the first pipe end of a steel pipe advances in a spiral manner to enter a cooling area from a corrosion prevention operating area, a cooling spray nozzle moves to a cooling work position in the steel pipe and keeps still, the steel pipe continues to advance in the spiral manner, and the inner wall of the steel pipe is continuously cooled through cooling water; when the second pipe end of the steel pipe advances to the position of the cooling spray nozzle, the cooling spray nozzle moves out of the steel pipe and arrives at a work waiting position, and meanwhile separation between the steel pipe and a next steel pipe is accelerated; a pipe pulling device pulls the steel pipe where internal cooling has been completed to the next procedure; and the steps are repeatedly executed, the cooling spray nozzle moves to the cooling work position to cool the inner portion of the next steel pipe. The cooling device for achieving the cooling method comprises a transmission device, an internal cooling device, the pipe pulling device and a control system. By means of the cooling method and the cooling device, the anti-corrosion quality and the cooling efficiency of the steel pipes are improved, and the production cost is reduced.

Aiming at solving the problems in the prior art, the invention adopts the following technical schemes: a corrosion prevention method of a sealed container is further improved, thus the comprehensive corrosion prevention is carried out on the sealed container; and the internal gaps of the sealed container can be protected by utilizing the penetrability of the liquid, and the internal surface quality is high, the lacquer film is uniform and the thickness of the lacquer film is easy to control by utilizing rotational energy, thus the corrosion prevention quality is effectively improved.

The invention relates to anticorrosion equipment of a sealable container. Specifically, rotational moulding technological parameters, such as rotational moulding time, rotational moulding temperature, rotation speeds of main and counter shafts, alternate time of main and counter shafts, and the like, are set on the operation panel of an electric control cabinet. A workpiece for rotational moulding is loaded on driving vehicle mould frameworks, two supporting bases of which are equipped with bearings inside. The inside of a supporting base on one end is provided with a hollow main shaft, the inside of which is provided with a counter shaft. The power of the main shaft is provided by a front chain wheel, while the power of the counter shaft is provided by a back chain wheel. And a pair of bevel gears changes the rotation angle so as to drive a die filling disc to rotate, thus realizing 360-degree rotation of the mould frameworks along two vertical shafts. When a mould needs to enter a heating chamber from a cooling position or to move out of the heating chamber to the cooling position, a PLC (programmable logic controller) microcomputer can initiate a walking part electric motor to drive a small vehicle to move and stop automatically when moving to a right place.

The invention discloses a high efficient improved wood preservation facility, which comprises a body, a first cavity arranged in the body, and a first transmission cavity arranged in the body. A second cavity with a downward opening is arranged in the top wall of the first cavity. A third cavity with an upward opening is arranged in the bottom wall of the first cavity. A fourth cavity that is communicated with the first cavity is arranged in the left wall of the third cavity. A fifth cavity that is communicated with the first cavity is arranged in the right wall of the third cavity. A second transmission cavity is arranged in the front wall of the first cavity. The provided facility has the advantages of simple structure and convenient operation. A wood plate is delivered and oil-painted by a same power source; during the oil painting process, the oil is gradually supplied, the anticorrosion oil can be painted more uniformly; at the same time, during the painting process, a drying device is used to accelerate the drying of the wood anticorrosion oil; steps cooperate with each other and do not influence other steps, the oil painting efficiency and anticorrosion quality are both improved, and the practicality of the facility is enhanced.