1182 results about "Abrasive blasting" patented technology

An apparatus and processes for large scale inline manufacturing of CdTe photovoltaic modules in which all steps, including rapid substrate heating, deposition of CdS, deposition of CdTe, CdCl₂ treatment, and ohmic contact formation, are performed within a single vacuum boundary at modest vacuum pressures. A p+ ohmic contact region is formed by subliming a metal salt onto the CdTe layer. A back electrode is formed by way of a low cost spray process, and module scribing is performed by means of abrasive blasting or mechanical brushing through a mask. The vacuum process apparatus facilitates selective heating of substrates and films, exposure of substrates and films to vapor with minimal vapor leakage, deposition of thin films onto a substrate, and stripping thin films from a substrate. A substrate transport apparatus permits the movement of substrates into and out of vacuum during the thin film deposition processes, while preventing the collection of coatings on the substrate transport apparatus itself.

Provided is a coating layer for cutting tools, as a hard coating layer stacked and formed in the sequence of a TiN layer, a TiCN layer, a bonding layer, an alumina (Al₂O₃) layer, and a cover layer from the bottom by using a chemical vapor deposition (CVD) method on a parent material, able to improve cutting performance, because surface residual stress of the coating layer may be maintained in a compressive stress state by adjusting a composition of the cover layer without using a separate additional process, such as a blasting operation, or a mixed process of CVD and physical vapor deposition (PVD), and simultaneously the cover layer may also be used as a wear-resistant layer.

The coating layer according to present invention is formed on a surface of a parent material by using a CVD method, in which the coating layer includes an alumina layer formed of an α-phase, disposed on the parent material and composed of a composite structure having a columnar crystal structure and an equiaxed crystal structure mixed therein, and a cover layer formed of Al_xTi_ySi_zCr_wN (herein, x+y+z+w=1, x≧0.75, y≧0.2, 0≦z≦0.06, 0≦w≦0.08) and disposed on the alumina layer.

A blasting nozzle for a blasting apparatus includes an inlet for attachment to the outlet hose of the blasting apparatus, an accelerating portion, and an outlet portion through which an accelerated abrasive-laden jet can be ejected. The outlet portion has an interior surface that flares outwards to define a single outlet orifice but that also defines a transverse cross-section profile having at least two lobes between which is at least one splitter element. In use, the abrasive within the jet is directed by the splitter element into one or other of the two lobes within the single egressing jet. The overall effect is such that the abrasive distribution transversely across the jet is much more even than in a conventional blasting nozzle.

A CVD-coated cutting tool insert with a TiC_xN_y-layer with a low tensile stress level of 10-300 MPa and an α-Al₂O₃-layer with a high surface smoothness of <0.1 μm as measured by AFM-technique is disclosed. This is obtained by subjecting the coating to a first intensive wet blasting operation with a slurry of F80 grits of Al₂O₃ followed by a second wet blasting treatment with a slurry of F320 grits of Al₂O₃.

A reaction chamber assembly for thin film deposition processes or the like includes an outer wall assembly for enclosing an outer volume and a removable liner installed into the outer volume through an outer aperture for preventing precursors or reactants from coming into contact with internal surfaces of the outer wall assembly and forming thin film layers thereon. The removable liner encloses a reaction chamber and includes substrate support trays or the like for supporting substrates being coated. Thin film layers are formed onto internal surfaces of the removable liner instead of onto surfaces of the outer wall assembly. The removable liner may be disposable or may comprise stainless steel, which can be removed when contaminated, cleaned by abrasive blasting such as bead blasting, and replaced. Two removable liners can be used to periodically swap removable liners and clean one of the liners while the other is in service with minimal disruption to production coating schedules. Other removable cleanable elements such as input and output plenums, door liners and conduits comprising stainless steel can be periodically removed and cleaned by abrasive blasting.

The invention discloses a method for processing the surface of an attachment-resisting plate. The method comprises the following steps: providing an attachment-resisting plate with a smooth surface; patterning the attachment-resisting surface of the attachment-resisting plate with a smooth surface to form an uneven attachment-resisting surface; blasting the attachment-resisting surface; and meltallizing the attachment-resisting surface after blasting. The smooth surface of the attachment-resisting plate is subject to the patterning, the blasting and the meltallizing so that the surface of theattachment-resisting plate has corrosion resistance, rust prevention, abrasion resistance, lubrication, roughness, adsorption, insulation, heat insulation and other properties; the attachment-resisting surface of the attachment-resisting plate achieves even roughness; and the attachment-resisting plate can easily absorb target atoms or large-sized particles so that the target atoms or large-sizedparticles do not fall on a substrate, thereby increasing the sediment capability of the attachment-resisting plate, improving the cleanness of the inner wall of a sputtering machine, improving the filming rate of sputtering and prolonging the service life of the attachment-resisting plate.

An integrative method for a packer to pack off a multi-layer hydraulic sand-spraying perforation and pressure fracture is used in the multi-layer perforation and the pressure fracture of a well of well completion of a petroleum casing. A pipe column comprises an oil pipe, a safety joint, a hydraulic ejector, a K34 or a Y34 packer, a uniflow valve, a sieve vessel and an end cap, wherein, the lower layer of a hydraulic ejector position requires perforation depth. With the completion of perforation, the hydraulic sand-spraying fractures the lower layer by actively circulating the lower layer of the hydraulic sand-spraying perforation. When the hydraulic sand-spraying pressure fracture for the lower layer is completed, a reverse circulation surge tank is processed and the pipe column is leveled up and dragged to the upper layer of perforation pressure fracture to continue to fracture the upper layer by hydraulic sand-spraying perforation. After completion, the pipe column is lifted to be put into the well-completion pipe column to discharge liquid and finish production. The perforation is not required by each layer because only an oil pipe needs to be dragged to finish the multiple fracturing of multiple layers of the well. The integrative method integrating the perforation, the fracture and the packing-off together is new stimulation treatment technology. In addition, the fracture is reliable, construction is easy and convenient and period is short.

A method and apparatus are disclosed for selective removal of a conformal coating from the solder balls of grid array packages such that the benefits of the coating are realized. An ancillary benefit of the invention is improved process-ability of the grid array package by improving the mechanical containment of the solder during the reflow process and improved electrical isolation between the individual solder attachment points. For example, a method for coating a ball grid array is provided, which includes coating the ball grid array with a thin layer of parylene. Next, the solder ball side of the part is butter smeared or squeegeed with a water soluble coating and assembled wet. A mask having holes in the same pattern as the balls in the grid, and a thickness that is about 80% of the height of the balls, is applied to the solder ball side of the part. This side of the part is then butter smeared again with the water soluble coating, and the entire assembly is allowed to dry. At this point, about 20% of each parylene-coated solder ball protrudes higher than the surface of the mask. The solder ball side of the part is then grit blasted with an abrasive material. The extent that the abrasive material removes the parylene coating from the solder balls is limited by the mask and the layer of water soluble coating. Therefore, the grit blasting removes the parylene coating from only the protruding areas (e.g., about top 20%) of the solder balls. Water is then used to remove the water soluble coating, and the parylene coated part is baked to remove moisture. Thus, a parylene coated ball grid array (or column grid array) is provided that is highly impervious to moisture, has a very high dielectric strength, and thereby improves the electrical performance and reliability of the surface mounted part.

The present invention relates to a device in the technical field of material processing, in particular to a peener which carries out the surface deformation strengthening process on magnesium alloy samples. The present invention comprises a main peening system, an upper whirlwind separation system, a dedusting system, an air compression system and an electric system, wherein, the upper whirlwind separation system is positioned on the upper end of the main peening system, the lower part of the upper whirlwind separation system is communicated with the main peening system, the upper part is connected with the dedusting system, which is positioned outside the main peening system, the air inlets of both the dedusting system and the main peening system are connected with the air compression system, and the electric system is connected with the main peening system, the upper whirlwind separation system, the dedusting system and the air compression system. The present invention can conveniently assemble and disassemble the samples of the shaft class, the range of the generated peening strenghth is wide, the effect and uniformity of peening is good, and moreover, pollution can be prevented.

A system and method for managing abrasive blasting may include timing duration of blast media being blown in performing abrasive blasting using an abrasive blasting machine. Time duration that an operator worked in association with the duration of the blast media being blown may be received. A blasting efficiency ratio may be computed based on the duration of the blasting media being blown and duration of that the operator worked. The blasting efficiency ratio may be displayed to a user.

The invention discloses a laser cladding method of a composite coating containing spherical tungsten carbide, which is characterized by comprising the following steps of: cleaning a metal to be clad by using acetone to remove oil, and blasting sand onto the metal to coarsen the metal; presetting composite powder containing 5 to 50 percent of 0.5 to 2.0 millimeter spherical tungsten carbide and 50 to 95 percent of an iron or nickel based self-fluxing alloy on the surface of the metal; and performing the laser cladding of the metal by using a CO2 laser. In the laser cladding method of the invention, the spherical form of the tungsten carbide composite coating is unchanged, the wear resistance of the cladding is high, defects such as cracks and air holes are avoided, the production working procedures are simple and the working efficiency is high. The method is suitable to be used for metal surface treatment.

The invention discloses graphene inorganic paint and a use method thereof. The graphene inorganic paint solves the problem that the existing inorganic paint has poor adhesion to a metal surface. The graphene inorganic paint is prepared by modifying inorganic paint by graphene, wherein a use amount of graphene is 0.001% to 5% of that of the inorganic paint. The graphene inorganic paint can greatly improve inorganic paint adhesion to the metal surface so that the surface adhesion effect of the graphene inorganic paint is the same as surface adhesion effect improved by metal surface abrasive blasting or corrosion roughening. The graphene inorganic paint avoids metal surface abrasive blasting or corrosion roughening thereby greatly reducing construction difficulty.

A steel tube with a high stretch, heat resistance, anti-corrosion, anti-abrasion Nami compound material coating layer production technique is provided, which comprises: use emery to proceed spraying seed on the inner and outer surface of the steel tube to remove the iron dust erosion product of the inner and outer wall of the steel tube; use compressed air to blow off the floating sand and dust which passes through the inner surface of the steel tube, then preheat in a preheat furnace to remove water and moist on the inner wall of the tube; proceed titanium alloy compound material spray finishing to the inner surface of the steel tube after preheating to form a coating layer; make the steel tube after spray finishing rotate with the tube axle and the coating layer level evenly and the surface of the tube is smooth and neat; then make the coating layer solid completely to get finished steel tube; the titanium alloy compound material is composed of several kinds titanium alloy Nami powder as active addition agent, optimized resin and addition agent, the steel tube with the coating layer can be used as oil well flow string or water inlet to meet the requirements under the working condition of 2000m to 5000m deep well, which has long service life and be used for saving a large amount of steel material and reducing production cost.

The invention belongs to the field of metal material and relates to a method for surface treatment of a titanium electrode substrate. The service life and the electrocatalysis performance of the titanium electrode are greatly increased by the abrasive blasting pretreatment to the substrate. The abrasive blasting treatment is carried out on the titanium substrate; the nozzle pressure of an abrasive blasting machine is 0.3-0.5MPa; the Al2O3 grinding medium of 70-90 meshes is adopted; the blasting angle is 45-90 degrees; the distance from the nozzle to a workpiece is 1-2cm; the coarsening time is 15-30s; the titanium substrate is then pickled for pickling treatment in a 10wt.% of oxalic acid solution for 1.5-2.5 hours at the temperature of 90-95 DEG C; a Ti/IrO2.Ta2O5 oxide coating electrode is prepared on the obtained substrate by a thermal decomposition method, wherein the Ir is chloro-iridic acid, Ta is tantalum pentachloride and the molar ratio of Ir to Ta is 7:3; a coating solution is uniformly coated on the pre-treated titanium substrate by a soft hair brush; the titanium substrate is dried for 10min at the temperature of 120 DEG C, is subsequently arranged in a box-type resistance furnace and sintered for 10min at the temperature of 450 DEG C; the above operations of coating, drying and sintering are repeatedly carried out by 5-20 times; and the final sintering is carried out for 1h at the temperature of 450 DEG C. The method provides optimum pretreatment parameters, greatly prolongs the service life of the titanium electrode, effectively improves the electrocatalytic activity and greatly reduces the running and repairing cost for the electrode.

The invention discloses a metal thermal spraying and powder coating electrostatic spraying composite coating anti-corrosion technology, which includes the following procedures: after a steel and iron work piece is deoiled, dried and pre-treated, the surface sand spraying treatment is conducted, with the rough degree of up to Ry40 to 100Mu m; the metal thermal spraying is conducted within 4 hours; after the thickness of a metal layer reaches 40 to 120Mu m, the powder coating electrostatic spraying is conducted, to make the thickness of a powder layer reach 60 to 120Mu m; and then the material is sent into a drying box for heating and solidification, so that the total thickness of the composite coating reaches 100 to 240Mu m. The composite coating treated by the technology has less thickness and stronger anti-corrosion than those of common coating, and is characterized by water resistance, impact resistance, weather resistance, long-lasting protection, long anti-corrosive service life, smooth appearance, environmental protection, cleanness, etc.

The invention provides an ultraviolet curing anti-sandblasting shielding protection printing ink, by taking total weight of a printing ink composition as a reference, the ultraviolet curing anti-sandblasting shielding protection printing ink comprises the following components by weight percentage: 50-70% of low polymer, 0.5-15% of active monomer, 3-8 parts of initiator and 15-30% of filling material; wherein the low polymer is one or two selected from aliphatic polyurethane acrylate and acid anhydride-modified epoxy acrylate. The ultraviolet curing anti-sandblasting shielding protection printing ink has the advantages of fast solidification speed, better adhesive force, CNC resistance, scratch resistance, immersion resistance by various cutting fluids, sandblasting resistance, easy stripping, no residues after film-stripping, and no base material corrosion; is suitable for metal base material and plastic cement base material, and is especially suitable for a metal and plastic cement-embedded composite base material.

The invention discloses an abrasive water jet cutting spray head device. The center of a spray head body is provided with a through hole, one end of the spray head body is provided with a high-pressure water inlet, an abrasive blasting pipe is arranged in a central hole of the other end of the spray head body, and a spring chuck is arranged at the end of the installation section of the abrasive blasting pipe. A water jet nozzle is positioned in the high-pressure water inlet of the spray head body. An abrasive mixing cavity is formed in an inner hole of the spray head body between the water jet nozzle and the abrasive blasting pipe. The shell of the spray head body is provided with a return water outlet, and the return water outlet corresponds to an abrasive inlet. The included angle between the central line of the return water outlet and the central line of the spray head body is 15 to 30 degrees. The abrasive mixing cavity is formed in the inner hole of the spray head body between the water jet nozzle and the abrasive blasting pipe. By symmetrically and uniformly forming sand inlets and return water holes, the return water produced when the sand blasting pipe 6 is blocked is prevented from entering an abrasive supply valve, and the reliability and the machining efficiency in the cutting process are improved. The device is simple in structure, convenient to machine and easy to implement.