A manufacturing method of the honeycomb structure uses a grinding wheel having a coarse abrasive grain layer and a pair of fine abrasive grain layers sintered and secured to be formed on both sides of the coarse abrasive grain layer, and has a grinding wheel rotating step of rotating the pair of grinding wheels disposed via a predetermined space in a state where fine abrasive grain layers of the grinding wheels face each other; a conveying step of conveying a honeycomb formed body formed by extrusion and the like; an end face grinding step of grinding end faces of the conveyed honeycomb formed body with the rotating grinding wheels; and a firing step of firing the honeycomb formed body.

A manufacturing method of the honeycomb structure uses a grinding wheel having a coarse abrasive grain layer and a pair of fine abrasive grain layers sintered and secured to be formed on both sides of the coarse abrasive grain layer, and has a grinding wheel rotating step of rotating the pair of grinding wheels disposed via a predetermined space in a state where fine abrasive grain layers of the grinding wheels face each other; a conveying step of conveying a honeycomb formed body formed by extrusion and the like; an end face grinding step of grinding end faces of the conveyed honeycomb formed body with the rotating grinding wheels; and a firing step of firing the honeycomb formed body.

The honeycomb structure includes a pillar-shaped honeycomb structure body, and a circumferential coating layer disposed to surround a circumference of the honeycomb structure body, and cells which are formed at an outermost circumference of the honeycomb structure body and in which peripheries of the cells are defined by the partition walls without any lacks are defined as outermost circumference complete cells, and in a cross section of the honeycomb structure body which is perpendicular to an extending direction of the cells a minimum distance T (mm) among distances from the outermost circumference complete cells to the surface of the circumferential coating layer and a porosity P (%) of the circumferential coating layer satisfy relations of Equation (1) and Equation (2) as follows:
1.5T16(100P).sup.1.4; andEquation (1):
20P75Equation (2).

A lightweight thermal insulating cement-based material is formed from a mixture that includes cement, water and a foaming agent. The foaming agent can be an aluminum powder or a surfactant. The insulating material has a maximum use temperature of about 900 degrees Celsius or more.

The present disclosure generally relates to integrated core-shell investment casting molds that provide a filament structure corresponding to a cooling hole pattern in the surface of the turbine blade, stator vane, or shroud. The disclosure also relates to the forming of a ceramic coating on at least a portion of the shell of the core-shell casting mold.

The subject matter of the present invention is a method for producing coated, and in particular painted, building boards (1), preferably for the interior finishing of buildings. First, the respective building board (1) is provided on its longitudinal edges (2) and/or transverse edges with a bevel (4). Then, the respective building board (1) is transferred to a rubber-like transporting belt (7) in such a way that the edges (2) respectively provided with the bevels (4) are arranged transversely in relation to the conveying direction (F) of the transporting belt (7) and the bevels (4) are arranged adjacent to a visible side (6) of the building board (1), facing away from the transporting belt (7). Finally, a coating material, and in particular paint (13), is applied to the visible side (6) of the building board (1) and respective bevel areas (5) of the bevels (4) in one operation with the aid of at least one roller (11) arranged above the transporting belt (7) and rotating substantially transversely in relation to the conveying direction (F).

The invention describes a device for applying sand to preforms for wetting and sanding bricks prior to firing (preforms), in order to prevent sticking of the stacked bricks in the firing oven. The device consists of a sanding device in which the preforms are placed in order to wet and sand the contact surfaces in a targeted manner. In one embodiment, the sanding device consists of a liquid pan and a sanding pan for first wetting and then sanding the contact surfaces of the preforms. By means of the targeted and sustainable application of sand on a surface of preforms, it is ensured that sufficient sand is applied between the preforms as an intermediate layer in the firing oven, and scatter losses commonly caused by prior art sprinkling with sand from above. The device according to the invention not only saves sand, but also protects other system parts which are not designed to handle scattered sand. Also, the device according to the invention reduces dust generation during the sanding of preforms.

A method for digital printing in quantity, including the steps of providing a conveying unit adapted to convey printing substrates, setting a running velocity, providing a digital printer, providing a graphics file as input to the digital printer representing a motif to be reproduced on the printing substrates at a predefined resolution, calculating a decoration frequency for printing with decorative inks as a function of the predefined resolution and of the running velocity, calculating single material printing frequencies for each one of the material inks, calculating a synchronized printing frequency, calculating a scaling factor, calculating an actual printing frequency as a function of the scaling factors, calculating an actual printing resolution as a function of the actual frequency of material to be deposited and of the running velocity, and printing on the printing substrates at the actual printing resolution.

A housing comprising a ceramic material to which a plastic layer is firmly bonded includes a substrate, a plastic member, and a porous layer. The porous layer is pitted and formed between the substrate and the plastic member by coating and sintering a porous ceramic slurry on a surface of the ceramic substrate. The present disclosure also provides a method for manufacturing the housing.

A method for manufacturing an engineered stone comprising the steps of: providing a mixture comprising at least a stone or stone like material and a binder; compacting the mixture; curing the binder; and printing a printed pattern on at least a top surface of the engineered stone.