Abstract: Apparatus (1) for additively manufacturing three-dimensional objects (2) by means of successive layerwise selective irradiation and consolidation of layers of a build material (3) which can be consolidated by means of an energy source (4).

Abstract: Apparatus for additively manufacturing three-dimensional objects by means of successive layerwise selective irradiation and consolidation of layers of a build material which can be consolidated by means of an energy beam, comprising an irradiation device is adapted to generate the energy beam and guide the energy beam over a determination plane, in particular a build plane in which the build material is applied to be irradiated, wherein the irradiation device is adapted to generate at least one irradiation region, in particular a melt pool, in the determination plane, wherein a determination device is provided that is adapted to determine a focal position of the energy beam and/or a difference between a reference focal position and an actual focal position of the energy beam based on radiation that is emitted from at least one irradiation region.

Abstract: Method for operating at least one apparatus (1) for additively manufacturing three-dimensional objects (2) by means of successive layerwise selective irradiation and consolidation of layers of a build material (3) which can be consolidated by means of at least one energy beam (4), wherein the energy beam (4) can be guided along at least one defined beam path (9) arranged in a build plane (6) to irradiate build material (3), wherein dependent on at least one parameter relating to a length of the at least one defined beam path (9) and/or relating to a geometry of at least one region (10, 13) of at least one layer to be irradiated, the energy beam (4) is guided along the defined beam path (9) or along a substitute beam path (12).

Abstract: Apparatus (1) for additively manufacturing three-dimensional objects (2) by means of successive layerwise selective irradiation and consolidation of layers of a build material (3) which can be consolidated by means of an energy source (4), which apparatus (1) comprises an application unit (6) with at least one application element (7) adapted to apply build material (3) on a build plane (8), characterized in by a determination unit (12) that is adapted to determine contact information relating to a force acting on the at least one application element (7), preferably during an application process.

Abstract: Apparatus (1) for additively manufacturing of three-dimensional objects (2) by means of successive layerwise selective irradiation and consolidation of layers of a build material (3) which can be consolidated by means of an energy beam (4), wherein a detection device (13) is provided that is configured to detect splash particles (8-10) generated by at least partially evaporating build material (3) in a consolidation zone (7) in which the energy beam (4) irradiates the build material (3).

Abstract: The invention relates to an adapter (1) for aerosol cans, particularly for discharging mounting foams, said adapter comprising a receiving device (2) for the valve of the aerosol can, a conveying tube (3) for can content to be discharged which is arranged at the receiving device (2), a connection (4) on the conveying tube (3) to accommodate a trunk (16) used to enable the can content to be discharged in a well-aimed manner, a handle (5) to actuate the receiving device (2) counter to the valve of the can as well as holding means (6) for fixing the adapter to a crimping lip of the dome (15) of the can, with the receiving device (2) interacting with and having a sealing effect on the valve disk of the aerosol can and the receiving device (2) being flexibly integrated into the adapter (1).

Abstract: The invention relates to a pressurized can comprising a body, a valve arranged in a dome, a base (16), an inner shell (1) with detachable, push-off type cover (8) arranged on the base (16) and a movable shaft (7) arranged in a fixing element (2) and extending through the base (16) into the inner shell (1) and serving as release element for the inner shell with the inner shell (1) being connected to the base (16) via the fixing element (2), moreover comprising a piston element (3) movable in longitudinal direction of the inner shell (1) and being arranged inside the inner shell (1), the piston element yielding a sealing effect at the inner shell's (1) inner wall and interacting with the shaft (7) in such a manner that when the shaft (7) is moved into the inner shell (1) the piston element (3) causes a liquid present inside the inner shell (1) to be pressurized so that the cover (8) is forced off.

Abstract: The invention relates to a molding composition for producing casting molds for the foundry industry, comprising at least: a refractory mold material; a binder for curing the molding composition; a proportion of a borosilicate glass. The invention further relates to a process for producing a molding from the molding composition of the invention, the corresponding casting mold or the corresponding molding and also their use in metal casting.

Abstract: A system and a method for determining a position of two objects relative to each other is suggested, comprising: a source 43 of coherent radiation, a beam guidance for providing a measuring branch 49 for a measuring beam, which has an optical path length dependent on the position of the two objects, a radiation intensity sensor 65 for measuring an intensity of an interfering superposition of radiation, which include radiation at least after passing through the measuring branch 49, and a calculator 67 which responds to a measuring signal from the radiation intensity sensor 65, in order to detect optical path lengths of the measuring branch 49 and therefrom to detect the position of the two objects relative to each other, wherein the measuring branch 49 includes: at least one emitter fixedly mountable on a first of the two objects for emitting radiation supplied to the measuring branch 49 in a space between the two objects, at least three retroreflectors 19 mountable on the second one of the two objects, such t

Abstract: In the laser doping method in accordance with the invention firstly a medium containing a dopant is brought into contact with a surface of the solid-state material. Then, by beaming with laser pulses, a region of the solid-state material below the surface contacted by the medium is melted so that the dopant diffuses into the melted region and recrystallizes during cooling of the melted region. The laser beam is focussed linearly on the solid-state material, the width of the linear focus being preferably smaller than 10 ?m.

Abstract: The invention relates to an adapter (1) for aerosol cans, particularly for discharging mounting foams, said adapter comprising a receiving device (2) for the valve of the aerosol can, a conveying tube (3) for can content to be discharged which is arranged at the receiving device (2), a connection (4) on the conveying tube (3) to accommodate a trunk (16) used to enable the can content to be discharged in a well-aimed manner, a handle (5) to actuate the receiving device (2) counter to the valve of the can as well as holding means (6) for fixing the adapter to a crimping lip of the dome (15) of the can, with the receiving device (2) interacting with and having a sealing effect on the valve disk of the aerosol can and the receiving device (2) being flexibly integrated into the adapter (1).

Abstract: A process for the preparation of acylphosphines formula (1) wherein m is 1 or 2; R1, R2, and R3 are organic residues derived from aliphatic or aromatic hydrocarbons; by (1) reacting organic phosphorus halides of formula (II) wherein Y is Br or Cl,with an alkali metal in a solvent in the presence of an activator, wherein the alkali metal is present in the form of a dispersion of alkali metal particles having a mean particle size of ?500 ?m in the solvent, (2) subsequent reaction with acid halides of formula (III) which process is carried out without isolation of the intermediates. Preferably, R1, R2 and R3 are independently from each other phenyl, naphthyl and bi-phenyl, being unsubstituted or substituted by one to five halogen, C1-C8 alky and/or C1-C8 alkoxy. Most preferably, R1 and R3 are phenyl and R2 is 2,4,6-trimethylphenyl. The alkali metal is preferably sodium, the activator is preferably chlorobenzene and/or n-butanol.

Abstract: The present invention provides dye preparations comprising, each percentage being based on the weight of the preparation, a) from 0.1% to 30% by weight of one or more anthraquinone, quinophthalone or azo dyes which are free of ionic groups as a component (A), b) from 0.1% to 20% by weight of a dispersant based on a naphthalenesulfonic acid-formaldehyde condensation product having an average molecular weight of at least 11 000 g/mol, as a component (B), c) from 0.1% to 90% by weight of one or more mono- or polyhydric alcohols as a component (C), d) from 0% to 5% by weight of customary assistants as a component (D), and e) optionally water ad 100% by weight.

Abstract: A process for preparing a solution of sulfone-containing tanning materials comprises a) preparing a component A by a1) reacting phenol with concentrated sulfuric acid, with oleum of an SO3 content of from 20 to 65% by weight or with a mixture of sulfuric acid and oleum of an SO3 content of from 20 to 65% by weight, the molar ratio of total sulfuric acid, reckoned as SO3, to phenol being in the range from 0.7:1 to 1.5:1, at from 100 to 180° C. to form a mixture containing phenolsulfonic acid, dihydroxydiphenyl sulfone and sulfuric acid, or mixing the individual components to prepare a corresponding mixture, a2) then condensing said mixture with from 0.25 to 4 mol of urea and with from 0.5 to 4 mol of an aliphatic aldehyde of 1 to 6 carbon atoms per mole of phenol units present at from 40 to 90° C., a3) optionally adding a base to set a pH of from 4 to 5, b) preparing a component B by b1) reacting dihydroxydiphenyl sulfone with from 0.

Abstract: A process for preparing a solution of sulfone-containing tanning materials comprises

Abstract: The invention relates to a lightweight substance molded body made of a lightweight aggregate and a sintering auxiliary agent, wherein said molded body consist of a sintering product containing 60-95 wt. % lightweight aggregate with 40-5 wt. % water-soluble alkali silicate.

Abstract: A system and a method for determining a position of two objects relative to each other is suggested, comprising: a source 43 of coherent radiation, a beam guidance for providing a measuring branch 49 for a measuring beam, which has an optical path length dependent on the position of the two objects, a radiation intensity sensor 65 for measuring an intensity of an interfering superposition of radiation, which include radiation at least after passing through the measuring branch 49, and a calculator 67 which responds to a measuring signal from the radiation intensity sensor 65, in order to detect optical path lengths of the measuring branch 49 and therefrom to detect the position of the two objects relative to each other, wherein the measuring branch 49 includes: at least one emitter fixedly mountable on a first of the two objects for emitting radiation supplied to the measuring branch 49 in a space between the two objects, at least three retroreflectors 19 mountable on the second one of the two objects, such t

Abstract: The invention relates to a lightweight substance molded body made of a lightweight aggregate and a sintering auxiliary agent, wherein said molded body consist of a sintering product containing 60-95 wt. % lightweight aggregate with 40-5 wt. % water-soluble alkali silicate.

Abstract: A composition containing (A) one or more aromatic sulfonates, (B) one or more aldehyde resins and (C) a buffer and is prepared and used for treating, in particular neutralizing, leather tanned with mineral compounds or mineral-free compounds.

Abstract: A pressure medium-tight inductive pickup for a fluid control element has a pressure pipe composed of a non-magnetic material, a magnetic core received in the pressure pipe, connecting means at the open end of the pressure pipe for pressure-tight connection of the pressure pipe with the control element, a spool body surrounding the pressure pipe, a housing surrounding the spool body and having an axis, and an adjusting element for adjusting zero position of the pickup, wherein the spool body is axially displaceable on the pressure pipe and in the housing, and the adjusting element is formed as a worm drive adjustable from outside and arranged so that the spool body is coupled with the worm drive in a play-free manner in an axial direction.