7 results about "Recoating" patented technology

A three-dimensional (3D) printing system configured to manufacture a three-dimensional (3D) article includes a vessel configured to contain a photocurable resin, a build plate coupled to the vertical movement mechanism, an imaging subsystem configured to selectively image over a build plane that is above the build plate, a coating subsystem including a plurality (N) of coater blades coupled to a horizontal movement mechanism, the N coater blades defining lateral regions therebetween, and a controller. The controller is configured to operate the vertical movement mechanism to position an upper surface of the build plate or the 3D article one layer thickness below the build plane, operate the horizontal movement mechanism to translate the N coater blades over the build plane and to provide a new layer of resin over the upper surface, and operate the imaging subsystem to selectively irradiate the new layer of resin in the lateral regions.

The invention relates to a process for locally recoating a ceramic layer system (1), wherein first a recess (16) is produced in a ceramic layer system (1) by means of a layer removal process, a ceramic coating being locally completely removed and a metal coating being locally at least partially removed, a metal adhesion-promoter layer (7) then being applied, and preferably a protection means (19) being used around the recess (16), and, after the metal adhesion-promoter layer (7') has been completely applied or repaired, a slope is produced within the recess (16) in its edge regions by the incremental removal of material of the ceramic layer (10) around the recess (16), and then in the last step new ceramic material (31) is applied in the modified recess (16').

The invention discloses a thermal insulation paint and a preparation method thereof. The invention belongs to the technical field of paint, by adding the efficient heat insulation filler and the reflective pigment, the heat conductivity coefficient of the coating is remarkably reduced, and conduction and radiation of heat can be effectively blocked; the coating disclosed by the invention has high adhesive force, can be firmly attached to the surfaces of various substrates and is not easy to fall off; through the efficient heat insulation performance, the energy consumption of building and industrial equipment is remarkably reduced, the energy cost is saved, the maintenance and recoating frequency is reduced due to the long service life and durability of the coating, and the long-term use cost is reduced; the heat-insulating and heat-preserving coating not only has a heat-insulating and heat-preserving function, but also has waterproof, moisture-proof and fireproof properties and the like, various application requirements are met, the attractiveness of the coating can be improved by using the reflective pigment, and the heat-insulating and heat-preserving coating is suitable for occasions with high appearance requirements.

The invention relates to a method for the local recoating of a ceramic layer system (1), in which a depression (16) is first created in a ceramic layer system (1) by means of a decoating process, wherein a ceramic coating is completely removed locally and a metallic coating is at least partially removed locally, wherein a metallic adhesion promoter layer (7) is then applied, wherein preferably a protection (19) is used around the depression (16), and after the complete application or repair of the metallic adhesion promoter layer (7'), a bevel is created within the depression (16) in its edge regions by material of the ceramic layer (10) around the depression (16) being gradually removed, and then, in the last step, new ceramic material (31) is applied into the modified depression (16').

The present invention relates to a method for partial recoating of a ceramic layer system (1), wherein a recess (16) is first created in the ceramic layer system (1) by means of a coating removal method, wherein the ceramic coating is partially and completely removed and the metal coating is partially and at least partially removed, wherein a metal adsorbent layer (7) is then applied, wherein a protective portion (19) is preferably used around the recess (16), and after the metal adsorbent layer (7') is fully applied or repaired, material is removed obliquely in the edge region within the recess (16) in such a way as to remove the material of the ceramic layer (10) in a stepped manner around the recess (16), and then, in a final step, new ceramic material (31) is applied to the repaired recess (16').

The invention belongs to the technical field of micro-drill de-coating, and discloses a micro-drill de-coating method and a micro-drill de-coating device. The micro drill coating removing method is used for removing a coating on a coating surface of a micro drill and comprises the following steps: determining the thickness of the coating; judging whether the thickness of the coating is less than or equal to 1 [mu] m or not, if so, executing the step of scanning the coating layer by layer by using ultrafast laser generated by an ultrafast laser generator until the coating is completely removed, and if not, scanning the coating layer by layer by using nanosecond laser generated by a nanosecond laser generator until the thickness of the coating is 0.08-0.12 [mu] m, and then scanning the coating layer by layer by using nanosecond laser generated by a nanosecond laser generator until the thickness of the coating is 0.08-0.12 [mu] m; and then ultrafast laser generated by an ultrafast laser generator is adopted to scan the coating layer by layer until the coating is completely removed. The micro-drill de-coating device comprises a fixing device, a nanosecond laser generator and an ultrafast laser generator. The micro-drill de-coating method and the micro-drill de-coating device provided by the invention have better de-coating effect and higher de-coating efficiency.

An additive manufacturing apparatus with multiple powder feeding and recoating units, and an additive manufacturing method. The apparatus comprises a scanning device, a control device, a substrate and a plurality of powder feeding and recoating units. The scanning device is used for performing scan melting on a powder material according to a preset path and process parameters. The substrate is used for bearing the powder material and a workpiece formed by the melting, the whole working area of the upper surface of the substrate that is used for the powder recoating and the scan melting being divided into a plurality of sub-working areas. The control device is used for controlling the scanning device to perform scan melting on some sub-working areas among all the sub-working areas, and simultaneously controlling the powder feeding and recoating units to recoat other sub-working areas with a powder. The present application allows powder recoating and scanning to be simultaneously and independently carried out, that is, powder recoating does not occupy the scanning time of the apparatus, thereby improving the printing efficiency of the apparatus to the maximum extent.