The disclosure relates to a method for producing of refiner disc segments. The method for producing of the invention allows for forming a multitude of refiner segments with only one forming process of a first die which may be lightweight and has reduced cost while at the same time a surface structure with high hardness which reduces wear of the die's surface. The method for producing a disc-type refiner segment for refining lignocellulosic material includes 3D printing a first model; forming a first die part using investment casting; 3D printing a second model; combining the first die part and the second model to create a first die model; using the first die model to generate for forming a sand model by compressing molding sand between the first die and the second die; and casting a refiner disc segment by casting a metal material using the sand model.

The present invention has solved the problems of conventional molding materials, and provides a hydraulic composition for additive manufacturing devices having high strength development, particularly high early strength development, and less generation of gas defect and graphite spheroidization defect. Specifically, the hydraulic composition for additive manufacturing devices of the present invention at least contains calcium aluminate. It is preferable that the hydraulic composition contain 0.5-10 parts by mass of gypsum with respect to 100 parts by mass of the calcium aluminate.

The invention relates to a binder based on phenolic resins of the benzyl ether type and isocyanate compounds having at least two isocyanate groups, containing free phenol and free hydroxybenzyl alcohols in the polyol component. The invention further relates to mold material mixtures containing the binder and to cores, molds, or risers produced with the mold material mixtures and to the use thereof in metal casting.

The invention relates to a binder based on phenolic resins of the benzyl ether type and isocyanate compounds having at least two isocyanate groups, containing free phenol and free hydroxybenzyl alcohols in the polyol component. The invention further relates to mold material mixtures containing the binder and to cores, molds, or risers produced with the mold material mixtures and to the use thereof in metal casting.

Disclosed is a method of manufacturing at least one component by 3D printing on a construction platform provided with a heating device, the method comprising: applying a layer of loose particulate material to the construction platform, heating the applied layer of loose particulate material by means of the heating device of the construction platform, outputting a liquid treatment agent onto a partial area of the heated layer of loose particulate material, and repeating said steps to build up the at least one component in layers. The heating by means of the heating device of the construction platform is carried out in such a manner that a temperature of the construction platform increases toward a predetermined construction platform maximum temperature during the build-up of the component to set a surface temperature of the respectively last applied layer.

Disclosed is a method of manufacturing at least one component by 3D printing on a construction platform provided with a heating device, the method comprising: applying a layer of loose particulate material to the construction platform, heating the applied layer of loose particulate material by means of the heating device of the construction platform, outputting a liquid treatment agent onto a partial area of the heated layer of loose particulate material, and repeating said steps to build up the at least one component in layers. The heating by means of the heating device of the construction platform is carried out in such a manner that a temperature of the construction platform increases toward a predetermined construction platform maximum temperature during the build-up of the component to set a surface temperature of the respectively last applied layer.

The present invention reasonably sets a molding condition of a mold for casting. A molding condition deriving device (i) collects a molding condition of a mold which molding condition excludes at least one molding condition, a sand property condition, and a quality condition of the mold, (ii) inputs the molding condition, the sand property condition, and the quality condition into a learned model learned with use of the molding condition, the sand property condition, and the quality condition, and (iii) derives the at least one molding condition.

The present invention reasonably sets a molding condition of a mold for casting. A molding condition deriving device (i) collects a molding condition of a mold which molding condition excludes at least one molding condition, a sand property condition, and a quality condition of the mold, (ii) inputs the molding condition, the sand property condition, and the quality condition into a learned model learned with use of the molding condition, the sand property condition, and the quality condition, and (iii) derives the at least one molding condition.

An additive manufacturing system includes a build platform, a particulate dispenser assembly configured to dispense or remove particulate to or from the build platform, and a plurality of print heads each having at least one binder jet. The binder jets are configured to dispense at least one binder in varying densities onto the particulate in multiple locations to consolidate the particulate to form the component with a variable binder density throughout. The system also includes a plurality of arms extending at least partially across the build platform and supporting the print heads and at least one actuator assembly configured to rotate the print heads and/or the build platform about a rotation axis and move at least one of the print heads and the build platform in a build direction perpendicular to the build platform as part of a helical build process for the component.

A method of forming a rotor by forming a mold by forming a first mold cake, a second mold cake, and a core that fits between the first and the second mold cake. The method includes a step of locating the core between the first mold cake and the second mold cake. The core includes a body, one or more projections extending from the body for forming one or more holes in a base portion of the rotor, and one or more projections extending from the body for forming one or more holes in a bat wall of the rotor.