205 results about "Abrasive blasting" patented technology

The invention relates to the field of metal processing, and particularly discloses a low-carbon steel oxide scale reduction annealing process and a hot galvanizing process, the low-carbon steel oxide scale reduction annealing process comprises the following steps: S1, pretreatment: firstly carrying out water / abrasive sand blasting treatment on a hot-rolled strip steel substrate, then washing with water, then heating to 650-700 DEG C at a heating rate of 50-60 DEG C / s, and keeping the temperature for 2-3 hours; after heat preservation treatment, taking out and immediately putting into a salt solution to obtain a pretreated base material; s2, reduction annealing: carrying out reduction annealing on the prepared pretreated base material in a reducing gas atmosphere; the hot galvanizing process comprises the following steps: carrying out oxide scale reduction annealing treatment on a hot-rolled strip steel base material; and hot galvanizing is conducted on the hot-rolled strip steel obtained after the oxide scale reduction annealing treatment is conducted in zinc liquid, a zinc coating is formed on the surface of the hot-rolled strip steel, and the hot-galvanized plate is prepared. The method has the characteristics that the oxide scale is effectively reduced, good adhesion of a zinc layer and a substrate is ensured, and the quality of a plating layer is improved.

The present disclosure provides for an abrasive blasting remote assembly having a shroud and a deadman lever pivotally connected to the shroud. The deadman lever is pitoval between a closed operating position and a released position. In the closed operating position, the deadman ever engages a momentary deadman switch disposed within the shroud. The momentary deadman switch is electrically connected to a wireless transmitter circuit board, which sends a wireless operational signal to a blasting pot wireless receiver to activate airflow through a blasting hose from a blasting pot, for the movement of abrasive media through the blasting hose, when the deadman lever depresses the momentary deadman switch in the closed operating position.

The invention relates to a pickling process of a cold-rolled strip, and belongs to the technical field of metal surface treatment. The acid pickling process comprises the steps of surface pretreatment, sand blasting treatment, acid pickling, water washing, passivation and the like. In the surface pretreatment, an oil removing agent and a rust removing agent are used for removing oil stains and rust stains on the surface of the cold-rolled strip, and then deionized water is used for cleaning. 200-mesh brown aluminum oxide and high-purity nitrogen are used for blowing and removing solid impurities in the sand blasting treatment. And pickling is carried out by using a 180-220g / L hydrochloric acid solution at 60-80 DEG C for 3-10 minutes. And after washing, drying at 110 DEG C in a nitrogen atmosphere. In the passivation step, a sodium nitrite passivation solution with the mass fraction of 30-50% is sprayed under the nitrogen atmosphere, and a laser drying method is used for drying. In addition, the invention further provides a preparation method of the oil removal agent and the rust removal agent and specific parameters of sand blasting treatment, nitrogen purging, acid pickling, spraying and laser drying.

The invention discloses a purification treatment device for paint spraying waste gas on the surface of a steel structure. The purification treatment device comprises a treatment bin, a fixing frame I, a fixing plate I, a partition plate II, a sand blasting area, a spraying area, a shot blasting mechanism, a turnover mechanism, a spraying mechanism and a purification treatment mechanism. One end of the treatment bin is provided with a feed port, and the other end is provided with a discharge port; the interior of the treatment bin is separated into a sand blasting area and a spraying area through the partition plate II, the sand blasting area is located at the feeding port end, and the spraying area is located at the discharging port end; a conveying mechanism is arranged among the feeding hole, the turnover mechanism and the shot blasting mechanism; the shot blasting mechanism is mounted in the sand blasting area; and the turnover mechanism, the spraying mechanism and the purification treatment mechanism are all mounted in the spraying area. While sand blasting is conducted on the surface of the steel structure, rust dust and metal chippings generated during sand blasting are collected, waste gas generated during spraying is recycled in time, overflow and diffusion are prevented, environmental pollution is greatly reduced, and meanwhile the environmental protection property and efficiency of device treatment are improved.

The method employs blast media containing a first grainy material, consisting mainly of a material with a hardness equal to or less than that of the target member to be restored in granular form. This blast media, along with gas, is ejected from a nozzle with a substantially rectangular-shaped outlet, while adjusting the flow rate. The ejected mixture functions as a graining tool to remove pollution, exposing underlying or surrounding surface to be restored of the target member without grinding away the surface and simultaneously providing a rough treatment to form fine texture on the restored surface.

The invention particularly discloses a sand blasting and coating integrated production device used after PE sheet extrusion. The sand blasting and coating integrated production device comprises an unwinding roller, a machine body and a drying box which are continuously arranged. A plurality of guide rollers are arranged on the machine body and used for guiding the PE sheets on the unwinding roller into the drying box; a surface treatment mechanism, a glue spraying mechanism and a glue scraping mechanism are sequentially arranged on the machine body in the movement direction of the PE sheet; the surface treatment mechanism comprises a main shell, and a sand blasting treatment assembly is arranged on one side of the main shell and used for conducting sand blasting cleaning on the surface of the PE sheet. A processing roller assembly is arranged at the bottom of the main shell and used for conducting galling processing on the PE sheet. And a suction assembly is arranged on the other side of the main shell. Through process integration and structure optimization, the production efficiency is improved, the product quality is guaranteed, meanwhile, environment-friendly and energy-saving production is achieved, and the device has remarkable technical advantages and practical value and can be widely applied to large-scale machining and production of PE sheets.

The invention provides a gradient construction method for an anti-corrosion coating of a marine photovoltaic support, and relates to the technical field of marine photovoltaic. The method comprises the following steps: carrying out surface treatment on the bracket, wherein the surface treatment comprises one of steel structure defect repair, pollutant removal, soluble salt grading treatment and composite abrasive blasting; sequential control coating is conducted on the support subjected to surface treatment, sequential control coating comprises the steps that pre-coating operation and spraying operation are completed within 4-6 hours after abrasive blasting is conducted on the composite abrasive, welding seam topology filling is conducted through bi-component epoxy resin in the pre-coating operation, gradient film thickness control is conducted in the spraying operation, and the spraying operation is completed within 4-6 hours after abrasive blasting is conducted on the composite abrasive. The film thickness of the edge area of the stent is increased by 20-30% compared with the film thickness of the plane area; repairing operation is conducted on the coated support, the repairing operation comprises selectively executing steel plate-level repairing or finish paint-level repairing based on the detection result of the damage depth of the coating, the steel plate-level repairing adopts a laser rust removal and three-coating step curing process, the anti-corrosion effect of the anti-corrosion coating can be improved, and the service life of the anti-corrosion coating can be prolonged.

To provide a blasting device for a wall surface that requires less manpower for work.SOLUTION: A wall-surface blasting device for performing blast treatment on a steel portion of a wall surface of a steel bridge, comprises a body portion and a lifting portion that lifts the body portion and causes the body portion to face the steel portion. The body portion includes: a projection unit that projects an abrasive material for the blast treatment; a collection unit that collects the abrasive material projected by the projection unit; and a circulation unit that supplies the abrasive material, collected by the collection unit, to the projection unit. A closed projection space in which the abrasive material is projected toward the wall surface is defined by its being closed by the wall surface while the body portion is kept facing the steel portion. The abrasive material projected from the projection unit in the closed projection space is collected by the collection unit, and the abrasive material is supplied to the circulation unit. The abrasive material supplied to the circulation unit is supplied to the projection unit, and the abrasive material is projected again from the projection unit.SELECTED DRAWING: Figure 1

This disclosure relates to the field of waste resource utilization technology, and in particular to a method and apparatus for preparing coal gangue blasting abrasive, as well as the coal gangue blasting abrasive itself. The method includes: feeding coal gangue tailings to a hydrocyclone for coal slime removal to obtain coarse-grained coal gangue; centrifuging the coarse-grained coal gangue to obtain dehydrated coal gangue; and feeding the dehydrated coal gangue into a hot air drying system for drying to obtain dried coal gangue blasting abrasive. Through targeted coal slime removal, the amount of dust generated during the blasting process of the coal gangue blasting abrasive can be reduced, improving the environment; processing coal gangue tailings into coal gangue blasting abrasive results in extremely low raw material costs, and the entire process allows for wastewater recycling without secondary pollution.

An abrasive blasting system that includes a blast hose; and a deadman assembly operably coupled therewith for controlling discharge out of the blast hose. The deadman assembly has a position of either a signal-flow or a no-flow position. When engaged to the signal-flow position, a burst or pulse of purge air is transferred to a mixer via a water injection conduit.

The invention discloses a beryllium sheet embedded type sand blasting surface treatment method, and belongs to the technical field of plate surface treatment. The method comprises the following steps that S1, a sand blasting template is manufactured according to the shape of a beryllium sheet; the beryllium sheet is embedded into a counter bore in the sand blasting template; step S2, filling a gap between the beryllium sheet and the counter bore with a sand material to be blasted, finally performing sand blasting on one surface of the beryllium sheet, and cleaning sand grains left on the sand blasting template and the beryllium sheet; and S3, the beryllium piece is turned over, and after sand blasting is conducted on the other face of the beryllium piece according to the step S1 and the step S2, burr treatment is conducted. According to the method, it can be guaranteed that beryllium sheets are firmly clamped and not prone to flying out in the sand blasting process, the defects such as scratches, pits and smudginess are avoided, the method can be suitable for surface treatment of beryllium sheets of small sizes and different shapes, and the transmission effect of X rays is guaranteed.

The application discloses the technical field of metal pipe surface treatment and relates to a deburring device for spiral micro-ribbed pipes. In view of the problems of the prior art, such as the easy embedding of heterogeneous abrasive into the base body and the incapability of existing equipment to match the spiral micro-rib pitch characteristics, the application provides a non-damage, high-precision and environment-friendly deburring device.The device comprises a fully-closed sandblasting box, a clamping mechanism, a ring-shaped sandblasting mechanism, a translation mechanism and a sandblasting recovery mechanism, the device uses particles of the same material as the pipe as the sandblasting abrasive, controls the moving speed of the ring-shaped sandblasting mechanism along the axial direction of the pipe, the rotating speed of the pipe and the spiral micro-rib pitch to meet a synchronous relationship, makes the sandblasting track completely coincide with the spiral micro-rib and realizes accurate deburring along the rib.Meanwhile, the fully-closed box is matched with a negative pressure dust removal and an abrasive recycling system to realize dust-free operation and repeated use of the abrasive.The application fundamentally avoids the embedding of the abrasive into the base body and damage to the base body, and guarantees the dimensional accuracy and the appearance consistency of the micro-rib.

A carrier assembly for holding a hose that includes a main body having a first portion selectively moveable to engage with a second portion at an at least one contact point. Either the first portion or the second portion is configured with a gripper feature. The carrier assembly is movable between an open position and a closed position.

TITLE: METHOD FOR FINISHING A PART MADE BY DEPOSIT AND SOLIDIFICATION OF SUCCESSIVE LAYERS OF POWDER AND PART OBTAINED BY THIS METHOD. One aspect of the invention relates to a method for finishing a part made by depositing and solidifying successive layers of a powder, characterized in that it comprises: a roughing step (E1) by sandblasting a portion of a surface of the part with an initial roughness (Ra0) using a first sand (S1) having a rough grain size (G1) and projected at a rough sandblasting angle (A1) and a rough sandblasting pressure (P1) until a rough roughness (Ra1) of the portion of the surface of the part is achieved, and a finishing step (E2, E2') of the portion of the surface of the part until a Final roughness (Ra2) of the surface area of ​​the part, with the final roughness (Ra2) lower than the roughing roughness (Ra1). Figure to be published with the abbreviation: Figure 2

To provide a blast device capable of further cleaning sucked air.SOLUTION: A blast device 10 comprises: a recovery tank 20 into which an abrasive P, powder dust P1, fine powder dust P2 finer than the powder dust P1, and fine particles P3 flow together with air A and which recovers the abrasive P; a cyclone unit 40 that collects the powder dust P1 among the powder dust P1, the fine powder dust P2, and the fine particles P3 flowing out from the recovery tank 20; a dust collector 60 that collects the fine powder dust P2 of the fine powder dust P2 and the fine particles P3 flowing out from the cyclone unit 40; and a filter 80 that collects the fine particles P3 flowing out from the dust collector 60. The air A is discharged from the filter 80.SELECTED DRAWING: Figure 1

To provide a manufacturing method for a wiring board that has excellent recess formability and minimize step differences in a cross-sectional shape.SOLUTION: A manufacturing method for a wiring board includes a step (A) of forming, in this order, an insulating layer (20) containing a cured product of a resin composition and a thermoplastic resin layer (30) on a substrate (10), a step (B) of forming a mask pattern (40') on the thermoplastic resin layer, and a step (C) of performing wet blasting treatment using abrasive grains to form recesses in the thermoplastic resin layer and the insulating layer, and the resin composition contains a thermosetting resin.SELECTED DRAWING: Figure 7

The application discloses an aluminum melt spraying reinforced film blocking plate for filter sand blasting pretreatment, which comprises a base layer and an aluminum melt spraying porous rough coating, the aluminum melt spraying porous rough coating is arranged on the upper surface of the base layer, the thickness of the aluminum melt spraying porous rough coating is 150-250 mu m, the porosity of the aluminum melt spraying porous rough coating is 8-12%, and the surface roughness of the aluminum melt spraying porous rough coating is 100-150 mu m. The aluminum melt spraying porous rough coating forms a porous rough coating on the surface of the base layer through an aluminum melt spraying process, which is a porous rough structure formed by high-speed atomization deposition of molten aluminum, can be closely attached to the working surface of the base layer, is combined with the base layer through mechanical engagement, is used for grabbing sand blasting dust to prevent the sand blasting dust from falling off and anchoring a redundant film layer of a plated film, can effectively solve the problem that the dust is easy to fall off, and thus can make sand blasting uniform, improve the adhesion of the film layer and reduce the point defect rate.

According to the split type tool bit production technology, during sand blasting treatment, part of a rotary disc device is located in a machine cover, part of the rotary disc device is located outside the machine cover, and after a sand blasting device conducts sand blasting on a tool bit which is about to be close to a station, rotation of the rotary disc device is matched with lifting of a sealing door; the sand-blasted tool bit rotates to the part outside the hood along with the rotation of the turntable device, and at the moment, in the sand blasting treatment process of the tool bit in the hood, the sand-blasted tool bit outside the hood is conveniently taken down, and the unprocessed tool bit is mounted, so that the sand blasting treatment efficiency is improved; meanwhile, part of abrasive materials can fall on the upper surface of the turntable device in the sand blasting process, and the air blowing mechanism is arranged at the bottom of the front side of the sealing door, so that the abrasive materials attached to the upper surface of the part, located on the outer side of the hood, of the turntable device are blown off and collected through the collecting hopper; and the situation that the grinding materials fall on the ground in the rotating process of the rotating disc device is avoided.

This application discloses a quick-change abrasive coating nozzle device, including a mounting frame and a nozzle body. The mounting frame is installed on the spraying equipment, and the nozzle body is connected to the mounting frame via a locking part. The mounting frame is provided with a connecting sleeve, and the top of the nozzle body is provided with a mounting sleeve that passes through the connecting sleeve. The locking part includes multiple sets of locking components and a starting ring. The locking components can switch between compressed and expanded states. In the expanded state, they are locked inside the connecting sleeve, and the starting ring is sleeved on the connecting sleeve. Rotation can switch the state of the locking components. A connecting pipe is provided inside the connecting sleeve. One end of the nozzle body is provided with a liquid inlet pipe, and the other end is provided with a nozzle. The connecting pipe is connected to the liquid inlet pipe and a sealing component is provided between them. The connecting pipe is also connected to the spraying equipment. This device can realize tool-free quick disassembly and assembly of the nozzle body, simplifying the replacement process and shortening the replacement time. At the same time, the sealing component reduces abrasive leakage, improves the operational stability of the device, and ensures continuous abrasive coating operations.

The present invention relates to a blasting method using a superabsorbent polymer. The present invention is characterized by comprising, as specific means, a drilling step (S1) of forming a blast hole (H) in the ground; a water level measurement step (S2) of measuring the water level present inside the drilled blast hole (H); a superabsorbent polymer injection step (S4) of injecting a superabsorbent polymer into the blast hole (H) to absorb a volume of water corresponding to the measured water level in the blast hole (H); a hydrogel formation step (S5) in which the superabsorbent polymer reacts with water to form a gel; a charging step (S8) of installing an explosive (4) on top of the hydrogel (1); and a sealing step (S10) of covering and sealing the top of the explosive (4) with a sealing material (6). According to the present invention, by using a hydrogel and a flood prevention device, the flooding of explosives and the reduction of blasting efficiency are prevented, energy loss during the blasting process is minimized, and vibrations transmitted to the surrounding environment are reduced.

An impeller sand blasting device belongs to the technical field of abrasive material jetting devices and comprises a sand blasting cylinder and a cylinder cover. A main shaft penetrates through the barrel cover, a driving wheel is fixedly arranged below the barrel cover, the main shaft coaxially penetrates through the driving wheel, a swing arm is arranged above the driving wheel, a driven wheel parallel to the driving wheel is rotationally arranged at the tail end of the swing arm, and the driven wheel is connected with the driving wheel; a cantilever is vertically arranged at the lower end of the main shaft and moves in the length direction; a connecting block is arranged at the tail end of the cantilever; a mounting shaft penetrates through the connecting block and rotates around the axis, the axis of the mounting shaft is perpendicular to the rotating axis of the connecting block, the upper end and the lower end of the mounting shaft are located above and below the cantilever respectively, the lower end of the mounting shaft extends to the spraying area of the nozzle and is used for being coaxially connected with the impeller, and the upper end of the mounting shaft is connected with the driven wheel through a universal joint. According to the scheme, the angle of the impeller can be automatically adjusted during sand blasting, sand blasting treatment can be conducted on all angles of the impeller, and the sand blasting uniformity of all positions of the impeller can be effectively improved.

The invention discloses a method for blasting sand on the inner wall of an oil pipe through brown aluminum oxide. The method comprises the steps of oil pipe protection, pretreatment, sand blasting treatment, aftertreatment and coating. According to the method for blasting the sand on the inner wall of the oil pipe by using the brown fused alumina, the brown fused alumina is used as a sand blasting grinding material for the inner wall of the oil pipe, can be broken in the sand blasting and circulating processes, cannot become a pill shape due to the loss of edges and corners like steel sand, and can always keep sharp edges and corners, so that a micro-form of rough anchor pattern standing is formed on a treated surface, and the specific surface area is greatly increased. The surface morphology of steel treated by taking steel grit and steel shots as sand blasting grinding materials on the inner wall of the oil pipe is improved, pollutants attached to the surface of brown aluminum oxide particles are also separated after the brown aluminum oxide particles are crushed, and secondary pollution of the grinding materials to the cleaned surface is effectively reduced. The secondary pollution degree is solved in the sand blasting process, and contributions are made to solving the problem that the adhesive force of a coating is increased in the pretreatment section of cleaning the inner wall of the oil pipe.

Provided are a blast-furnace operation method and blast furnace capable of realizing a smooth restart of a blast furnace by avoiding deterioration in melt discharging property as a result of restricting coke from forming smaller diameters due to combustion and consumption. The blast-furnace operation method is for restarting blasting after the blasting of a blast furnace is stopped upon operation shutdown, and this method includes: a combustion step of combusting coke remaining in the furnace by blowing an oxygen-containing gas into the furnace from a burner inserted into a tap hole after blasting is stopped, and thereby reducing the volume of in-furnace residues; a charging step of newly charging coke into a volume-reduced area formed in the combustion step; and a blasting step of restarting blasting from a tuyere, wherein an introduction step of introducing an inert gas into the furnace is provided during a period from after stopping blasting to before performing the blasting step.

The present disclosure provides for an abrasive blasting remote assembly having a shroud and a deadman lever pivotally connected to the shroud. The deadman lever is pitoval between a closed operating position and a released position. In the closed operating position, the deadman ever engages a momentary deadman switch disposed within the shroud. The momentary deadman switch is electrically connected to a wireless transmitter circuit board, which sends a wireless operational signal to a blasting pot wireless receiver to activate airflow through a blasting hose from a blasting pot, for the movement of abrasive media through the blasting hose, when the deadman lever depresses the momentary deadman switch in the closed operating position.

The application discloses a special sand-blasting triangular belt with wear-resistant top glue, which comprises a strong layer, a stretching layer, a compression layer, a cloth layer and wear-resistant top glue; the strong layer is polyester steel wire; the stretching layer and the compression layer are adhered to the upper and lower sides of the strong layer; the cloth layer is wrapped outside the strong layer, the stretching layer and the compression layer to form a basic triangular belt; and the basic triangular belt is provided with a layer of wear-resistant top glue on the top. The triangular belt is provided with a layer of wear-resistant top glue on the top, which improves the wear resistance of the top surface; the triangular belts are arranged side by side to form a sand-blasting production line conveying line, which can complete the conveying task, effectively avoid the accumulation of the sprayed material, improve the sand-blasting effect and reduce the energy consumption of the conveying line; and the wear-resistant top glue can withstand the impact of the sprayed material and is not easy to wear, so that the service life of the triangular belt in the sand-blasting production line is long.

The invention provides a surface treatment method which is suitable for a metal base material, and the metal base material is provided with an appearance surface. The surface treatment method includes the following steps. The method comprises the following steps of: firstly, performing surface sand blasting treatment on the appearance surface to form a sand blasting surface; then, an electrolyte is matched, and micro-arc oxidation treatment is performed on the sand blasting surface, so that a micro-arc oxidation surface is formed. Then, forming a coating to cover the micro-arc oxidation surface; wherein the electrolyte comprises the following components: sodium phosphate, sodium silicate, sodium aluminate, potassium fluoride, potassium hydroxide, ammonium vanadate, potassium vanadate, disodium ethylene diamine tetraacetate (Na2EDTA) and sodium tetraborate.

The present invention pertains to a handheld device for the application of an abrasive material to a surface, in particular for sandblasting. The invention also pertains to the use of a handheld device for the application of an abrasive material to a surface. The invention also pertains to a method for applying an abrasive material, in particular sand blasting, with a handheld device for the application of an abrasive material to a surface.

The invention relates to the field of industrial solid waste steelmaking slag resource regeneration, and discloses a steel slag-based non-metal abrasive and a preparation method thereof, the abrasive comprises the following components: 89wt%-94wt% of molten steel slag, 1.28 wt%-4.68 wt% of iron tailings, and 3.38 wt%-7.71 wt% of lime; the preparation method comprises the following steps: (1) pouring molten steel slag, iron tailings and lime into a tundish, mixing, and uniformly stirring; (2) heating the mixture to 1500-1600 DEG C in the tundish, and then crushing and granulating the molten mixture by using a gas quenching and granulating device to obtain gas-quenched steel slag; and (3) drying the gas-quenched steel slag, and screening to obtain the non-metal grinding material. According to the invention, the industrial solid waste and the auxiliary materials are reasonably and scientifically matched, so that the industrial waste residue is quenched and crushed to produce an amorphous nonmetal product with higher chemical stability, and the amorphous nonmetal product is screened to obtain a nonmetal abrasive product which meets the standard requirements of sand blasting abrasives and has stable performance indexes.

The application relates to a pipe-in quick sand blasting device and method, and the pipe-in quick sand blasting device comprises a sand tank, a walking track, a sand blasting sleeve, an abrasive material recovery box, a backflow sand blasting head, a tail end abrasive material collecting box and an abrasive material recovery system, wherein the sand tank is installed on the walking track and can reciprocate along the ground walking track, one end of the sand blasting sleeve is fixedly connected with the sand tank, the other end is connected with the backflow sand blasting head, the backflow sand blasting head is assembled at the front end of the sand blasting sleeve, the sand blasting sleeve passes through the abrasive material recovery box and can reciprocate in the oil pipe under the driving of the sand tank, the abrasive material recovery box and the tail end abrasive material collecting box cooperatively fix and support two ends of the oil pipe, and the oil pipe is guaranteed to be horizontal. The sand blasting process is realized through the backflow sand blasting head, then the abrasive material flows back to the sand collecting box along the middle layer of the sleeve under the action of the abrasive material recovery box, the abrasive material has no contact with the pipe wall after sand blasting, and the uniformity of the anchor marks is guaranteed.