187results about "Ceramic extrusion dies" patented technology

According to the forming equipment for refractory brick machining, the forming equipment is applied to the technical field of refractory brick forming, the composite die composed of the upper die body, the lower die body and the side die body is arranged, the upper die body, the lower die body and the side die body can punch refractory bricks during forming, and therefore the refractory bricks can be punched and formed in all directions; refractory bricks can be formed more uniformly, the density gradient is reduced, then the cracking phenomenon is reduced, the forming quality of the refractory bricks is improved, downward stamping force of the upper die can be converted into stamping force of the side face and the bottom face through a reversing stamping part arranged in the side die and a lower stamping part arranged in the lower die, all-directional stamping forming is achieved, and the production efficiency is improved. The fixed separating pieces are arranged between the adjacent side dies, the situation that formed refractory bricks are adsorbed on the side dies and are difficult to take out is prevented through side die separation, discharging is more convenient and efficient, meanwhile, abrasion of the side dies and the refractory bricks caused by friction between the refractory bricks and the side dies during discharging can be avoided, the side dies are protected, and the forming quality of the refractory bricks is improved.

The present invention relates to the technical field of concrete vibration, and in particular to an intelligent concrete vibration method and system. The method comprises determining concrete flow parameters based on sampled image information, determining whether concrete vibration parameters are qualified based on the concrete flow parameters, determining whether concrete vibration parameters are qualified based on bubble variation characterization values, and adjusting the concrete vibration parameters when abnormalities are determined. The vibration parameters include vibration frequency, vibration amplitude, and vibration duration. Vibration problems existing during on-site construction can be promptly identified, and vibration parameters can be adjusted when abnormalities occur, thereby ensuring the quality of concrete vibration.

The current invention relates to a cutting device (2) and related method for cutting an extruded strand (3) into parts (44) for forming bricks or slips (4). The strand (3) is cut in a direction (H) transverse to its longitudinal direction (L), whereby first (5) and second (6) cutting faces of the parts (44) are formed, in addition to the extruded faces (7-10). The cutting device (2) comprises a transverse cutting knife (11) with a blade (12), comprising a first partial blade (13) and a second partial blade (16) at an angle (α) to the first partial blade (13), for correspondingly providing a first said cutting face (5) with a first partial cutting face (15), at a first edge (15a) adjacent to a first said extruded face (7), and a second partial cutting face (18), at said angle (α) to the first partial cutting face (15) at a second edge (15b) of the first partial cutting face (15) away from the first edge (15a).

To provide a production method for a mold suppressing generation of crack or melting defect generated in a honeycomb filter through heat impact by partial exothermic heat and acute temperature change in exhaust gas without increasing pressure loss and for a honeycomb molding.SOLUTION: A mold to form a honeycomb molding for a honeycomb segment with an outer peripheral wall thicker than a partition wall through extrusion is provided with a mold body and a guide ring attached on an outer peripheral side of the mold body. The mold body comprises: a first surface where a cray supply hole opens; a second surface placed opposite to the first surface, where grate slits in communication with the cray supply hole opens; and a third surface positioned at an opposite side of the first surface and at an outer periphery of the second surface, the second surface constitutes an area forming a grid-like partition wall in a honeycomb body, the third surface constitutes an outer peripheral area forming the outer peripheral wall, the second surface is higher than the third surface by a step part H, and the guide ring has a gap between the third surface and itself and an opening with an enough size to cover the outer peripheral side part of the outer peripheral area.SELECTED DRAWING: Figure 7(b)

The application relates to a pit mud preparation system, which comprises a feeding device through which pit mud is fed, a first cutting device which cuts the pit mud, a first conveying device, a second cutting device which cuts the pit mud again, a second conveying device, a first stirring device which stirs the pit mud after adding water, a granulating device which prepares the pit mud into strips, a third conveying device, a second stirring device which stirs the pit mud again after adding water, and a forming box. The application can improve the uniformity of the pit mud when the pit mud is cut through the first cutting device and the second cutting device. The pit mud is stirred twice through the first stirring device and the second stirring device, and the pit mud is granulated again through the granulating device between the two times of water stirring, so that the soaking effect of the pit mud is improved, the phenomenon that the pit mud is dry and wet after water stirring is avoided, the stirring effect of the pit mud is guaranteed, and the quality of the prepared pit mud is guaranteed.

The 3D printing apparatus includes a stage that provides a support base for the object; first and second discharge nozzles arranged on the stage to respectively discharge a first material in a paste or slurry state that forms the outline of the object and a second material in a liquid state that fills a filling space surrounded by the outline of the object made of the first material; an extrusion device connected to the first discharge nozzle that extrudes the first material toward the first discharge nozzle to discharge the first material in a paste or slurry state that is a mixture of ceramic particles and a matrix in which the ceramic particles are dispersed; a heating funnel connected to the second discharge nozzle that uses a metal block as an input and melts the metal block to discharge the second material in a liquid metal flow state formed by melting the metal block through the second discharge nozzle; and a heating chamber that houses the stage and provides a space for slowly cooling the first and second materials accumulated on the stage from the first and second discharge nozzles.

The high-precision constant-speed honeycomb ceramic extruding machine comprises a main machine, an automatic material conveying mechanism, a segmented material cutting mechanism, a hydraulic station and an automatic control device, the main machine comprises an upper cross beam, a material cavity beam plate and stand columns, a hydraulic plunger is fixedly arranged on the upper cross beam, a main column rod and an ejector rod are arranged in the hydraulic plunger, and the lower end of the main column rod is connected with a movable mold frame; the lower end of the ejector rod penetrates through the movable die frame and is fixedly provided with a pressing head, a pressing sleeve is arranged between the vacuum sealing plate and the ejector rod, a die sleeve assembly is fixedly arranged on the material cavity beam plate, the vacuum sealing plate and the upper end face of the die sleeve assembly are tightly sealed, and a material cavity in the die sleeve assembly is vacuum. The pressing head can stretch into the cavity material in a sealed mode and press pug in the material cavity out of the die sleeve assembly. The four-column type honeycomb ceramic extruder is high in precision, large in pressure, high in vacuum degree, constant in extrusion speed and good in sealing ring effect, the production efficiency can be improved, the production cost can be reduced, and the product quality can be improved.

The present invention discloses a novel design of a lower mold with a transfer portion. The lower mold with a transfer portion is used in an airtight continuous atmosphere sintering hot pressing forming device, wherein: the lower end outer edge of the lower mold has a transfer portion that is larger than the outer edge of the lower mold and is integrally processed and formed with the lower mold. The transfer portion is in direct contact with the lower heating plate and directly conducts heat to the lower heating plate. In addition to having the effect of continuous, high-efficiency and high-quality hot pressing forming products, it also has consistent and better heating and cooling speeds.

The present invention relates to a device for producing a porous tubular support from a ceramic composition by extrusion, comprising: a fixed extrusion die (6) fitted with a punch holder (7) provided with a centrally located straight punch (8a) and at least one helical punch (8) wound around an axis of symmetry (X) along a winding direction and winding pitch; a system (10) for rotationally driving the punch holder (7) about said axis of symmetry (X) along a direction of rotation opposite to the winding direction of the punch (8) and at a rotational speed coordinated with the linear extrusion speed of the ceramic composition.

A drainage plate (10) for an extruder assembly including a body (12) having an inner edge (14) and an outer edge (15). A seal portion (24) of the body extends radially from the inner perimeter toward the outer perimeter. One of more drainage features are located radially outward of the seal portion. The one or more drainage features extend an axial depth into the body such that a first thickness (t1) of the drainage plate at the seal portion is greater than a second thickness (t2) of the drainage plate at the one or more drainage features. Methods of manufacturing a drainage plate and manufacturing ceramic articles are also disclosed.

The utility model relates to the technical field of punch forming, in particular to a silicon carbide ceramic special-shaped part near-net forming device which comprises a seat body, conveying structures are arranged at the left end and the right end of one side of the seat body, a raw material storage structure capable of transversely moving is connected between the two conveying structures, and a forming lower die is arranged below the other side of the seat body. And a supporting frame is fixedly installed over the forming lower mold and fixedly installed at the top of the base body, a driving air cylinder is installed at the top of the supporting frame, and the output end of the bottom of the driving air cylinder is fixedly connected with an upper mold base. And then the solid raw materials are conveyed to the position beside the forming device through the conveying structure, then the storage rack is lifted to a certain height through the lifting air cylinder, meanwhile, the electric push rod is used for driving the material pushing plate to push the solid raw materials to the slope end, and the solid raw materials are conveyed into a forming lower mold through the slope.

To provide a production method for a mold suppressing generation of crack or melting defect generated in a honeycomb filter through heat impact by partial exothermic heat and acute temperature change in exhaust gas without increasing pressure loss and for a honeycomb molding.SOLUTION: A mold to form a honeycomb molding for a honeycomb segment with an outer peripheral wall thicker than a partition wall through extrusion is provided with a mold body and a guide ring attached on an outer peripheral side of the mold body. The mold body comprises: a first surface where a cray supply hole opens; a second surface placed opposite to the first surface, where grate slits in communication with the cray supply hole opens; and a third surface positioned at an opposite side of the first surface and at an outer periphery of the second surface, the second surface constitutes an area forming a grid-like partition wall in a honeycomb body, the third surface constitutes an outer peripheral area forming the outer peripheral wall, the second surface is higher than the third surface by a step part H, and the guide ring has a gap between the third surface and itself and an opening with an enough size to cover the outer peripheral side part of the outer peripheral area.SELECTED DRAWING: Figure 7(b)

The invention relates to the technical field of brick making equipment, and discloses all-solid waste sintering brick making equipment which comprises a base, a brick making equipment body arranged at the top of the base, an extrusion pipe connected with the brick making equipment body and an extrusion mold connected with the extrusion pipe, and a spraying assembly is arranged at the position, close to the discharging end of the extrusion mold, of the top of the base. The spraying assembly comprises a box body, the box body is arranged at the top of the base, and a pipe body is arranged on the inner side wall of the box body; the water pipe I is arranged on the box body and is communicated with the pipe body; the spray head is arranged on the inner side wall of the pipe body and communicates with the pipe body, a humidifying assembly is arranged on the inner side wall of the box body, and the humidifying assembly comprises a first roller body and a second roller body, and the first roller body is rotationally connected to the box body; treatment is conducted through the spraying assembly, the sprayers arranged on the equipment in an annular array mode evenly spray water to the outer surfaces of the mud strips, the moisture content of the surfaces of the mud strips is effectively guaranteed, and therefore the sun crack phenomenon in the follow-up link is obviously reduced.

This invention belongs to the field of crucible preparation technology, specifically relating to a method for preparing an alumina crucible, comprising the following steps: Step 1: preparing a mixed solution and placing it in a ball mill; Step 2: obtaining a composite alumina slurry in the ball mill; Step 3: preparing composite alumina powder from the composite alumina slurry; Step 4: adding a binder to the composite alumina powder to obtain an alumina mixture; Step 5: molding the alumina mixture using a mold to obtain a crucible blank, wherein the mold forming process is a double-sided suction process. Compared with the prior art, the advantages and positive effects of this invention are: the double-sided suction process adsorbs fine particles in the material onto the product surface, while coarse particles are located in the middle layer of the product, thereby greatly improving the surface roughness of the finished alumina crucible, making the size of the alumina crucible more controllable, eliminating the need for a wax removal process, and effectively reducing the risk of the surface of the finished alumina crucible peeling off during use.

A method of forming an extrusion, the method including steps of: receiving a flow of extrudable material; extruding a plurality of flow streams from the flow of extrudable material; inducing a change in volumetric flow rate of at least one of the flow streams relative to another one of the flow streams; and combining each of the flow streams to form an extrudate having a velocity gradient.

Systems, methods and devices to create a wall system having a cross sectional density gradient obtained by structural 3D printing are disclosed. A mechanism is described that accepts a cementitious material and combines it with a gaseous bubble mixture and then partially mixes the various materials in such a controlled manner as to create a density gradient. The gaseous mixture may be primarily composed of carbon dioxide.

A honeycomb extrusion die (120) with improved wear properties. Extrusion die has a die body (121) with inlet (122) and exit (123) faces, feedholes (124) with feedhole entrances (124A) and outlets (124B), and a plurality of die pins (126) having side surfaces (128) configured to define a matrix of intersecting slots (130). At least some of the intersecting slots and die pins define a slot structure with divots (132) formed in the side surfaces of the die pins between the feedholes and the exit face, entrance slot portions between the feedhole outlets and the divots, the entrance slot portions having an entrance slot width WA, and exit slot portions between the divots and the exit face, the exit slot portions having an exit slot width WB, wherein WA > WB over an entire slot length. Methods of manufacturing honeycomb structures using the honeycomb extrusion dies and of fabricating the extrusion dies are provided as are other aspects.

The present invention provides a multi-tow continuous fiber reinforced concrete 3D printing device and printing method based on active yarn feeding. The active yarn feeding mechanism arranged on the periphery of the concrete barrel includes a drive system, a universal transmission assembly, a material roller shaft, and a yarn threading tube. The fiber tow drawn from the material roller passes through the yarn threading tube and extends into the inner cavity of the concrete barrel, and the fiber tow segment between the yarn threading tube outlet and the material roller is always in a relaxed state; the printing method steps include: pulling the fiber tow from the material roller and passing it through the yarn threading tube until the front end of the fiber tow extends into the inner cavity of the concrete barrel and is pulled out; turning on the active yarn feeding mechanism, and then turning on the concrete pumping system and power system. The concrete material enters the inner cavity of the concrete barrel and is stirred. The present invention is conducive to the stable deposition of continuous fiber tows inside the concrete module, fundamentally avoiding the problem of pulling the fiber tows out of the concrete module, and will not cause wear to the continuous fiber tows.

The invention relates to a municipal sludge ceramsite preparation device and method.The municipal sludge ceramsite preparation device comprises a preparation device body, a filtering and discharging mechanism is arranged at the top of the preparation device body, and a granulation mechanism is arranged on one side of the preparation device body; when a user puts treated sludge on a filter screen, then the user can start a motor, the output end of the motor can drive a lead screw to rotate, the lead screw can drive two sliding plates to move through two supports, and in the moving process of the sliding plates, pre-pressing springs at the bottoms of the sliding plates can drive mud baffles to enable rolling rods to extrude the sludge; and the blockage caused by excessive sludge on the filter screen is avoided, the sludge is accelerated to pass through the filter screen, and the harder sludge is ground and decomposed.

The utility model is applicable to the field of ceramics, and provides a shaping device for zirconia ceramic rod processing, which comprises a pressure box, a pressure channel is arranged in the pressure box, a feeding funnel is arranged at the top end of the pressure box, the bottom of the feeding funnel extends into the pressure channel, a hydraulic machine is arranged at the left end of the pressure box, and the hydraulic machine is arranged in the pressure channel. A telescopic rod of the hydraulic machine extends into the pressure channel, and a plunger plate is arranged at the end of the telescopic rod. When the extrusion die is used, a hydraulic machine drives the plunger plate to push forwards to push materials into the extrusion die pipe for shaping, at the moment, the charging tile is inserted into the material pipe in a penetrating mode, the charging tile is attached to the lower portion of the outer side wall of the extrusion die pipe, and the extrusion speed of a blank at a port of the extrusion die pipe is the same as the retreating speed of the charging tile. After a cylindrical blank is loaded on the loading tile, a worker cuts off the blank through a cutter, and at the moment, a steering motor drives the loading tile to twist by 180 degrees and then puts the blank into a material pipe.

The application provides a porous sintered brick extruder, relates to the field of brick making equipment, and comprises a feeding hopper, an extrusion cylinder, an extrusion screw, a screw driving part, an extrusion die and a heating unit. The extrusion cylinder is formed with an extrusion cavity. The feeding hopper is communicated with the extrusion cavity. The extrusion screw is arranged in the extrusion cavity. One end of the extrusion screw extends from one end of the extrusion cylinder and is connected with the screw driving part. The extrusion die is connected with the other end of the extrusion cylinder. The other end of the extrusion screw is rotatably connected to the end of the extrusion cylinder close to the extrusion die. The heating unit is arranged outside the extrusion die. The application has the effect of conveniently controlling the water content of the extruded green bricks, so that the extruded green bricks are not prone to deformation.

A device (100) for dispensing a hydraulically hardening building material (2), such as concrete, mortar, binder, and the like, wherein at least one further medium (3), for example, steel, is introduced into the building material, comprising a nozzle (1) for supplying the liquid, pasty, or plastic building material (2), wherein at least one pipe (11) projects into the nozzle (1) for supplying at least one further medium (3). According to the invention, the position of the opening of at least one pipe (11) within the cross-section of the nozzle (1) is adjustable. This makes it possible, for example, to introduce cable-shaped reinforcement materials into the areas of the building material (2) or component that are subject to higher mechanical stress. Furthermore, the use of the device in 3D printing is presented.

An apparatus for making and depositing bricks includes a nozzle having an inlet opening, an outlet opening, and a plurality of walls surrounding the outlet opening. At least one of the walls is configured to retract relative to the other walls. When a first brick is deposited, all of the nozzle walls are in the extended position. When subsequent bricks are deposited, one or more of the nozzle walls are retracted so that the form for the subsequent bricks is provided by the walls that are in the extended position and the sides of the already-deposited bricks. In this manner, the nozzle is configured to deposit the bricks directly adjacent to each other without any space or intervening material between them. The bricks may be deposited in a heated state and they meld together as they cool. The nozzle is particularly advantageous for paving autonomously in otherwise inaccessible locations, such as surfaces on the moon or other planets.

The application discloses an energy-saving material production extruding mud device, which comprises a barrel, a hopper, a machine head, a die head, a first motor, an extruding screw and an inner lining unit installed in the barrel. The extruding mud device can rotate the inner lining, so that the wear degree of the rotating inner lining is the same in the whole circumferential direction. The modularized inner lining design facilitates the replacement of the seriously worn inner lining, so that the maintenance is more convenient and the maintenance cost is low. Moreover, the work of the inner lining can be monitored to ensure the normal work of the inner lining.

The invention relates to a print head (1) for a pumpable plastic-viscous mixture, for example for 3D concrete printing or 3D mortar printing. The print head (1) comprises: - a mixing chamber (2) having a side wall (21), a feed opening (3) and an outlet (4) designed as a nozzle element (41); - a device for connecting a material conveying hose (31) to the feed opening (3) of the mixing chamber (2); and - at least one injection device (5) having injection nozzles (51) for injecting at least one liquid additive. According to the invention, two or more injection nozzles (51) are arranged on the print head (1) on the side wall (21) of the mixing chamber (2). Furthermore, a plurality of injection nozzles (51) are connected for injection, via a single feed line (52).

The invention relates to a print head (1) for a pumpable plastic-viscous mixture, for example for 3D concrete printing or 3D mortar printing. The print head (1) comprises - a mixing chamber (2) with a side wall (21), a feed opening (3) and an outlet (4) designed as a nozzle element (41). - a device for connecting a material conveying hose (31) to the feed opening (3) of the mixing chamber (2), - at least one injection device (5) with injection nozzles (51) for injecting at least one liquid additive. According to the invention, two or more injection nozzles (51) are arranged on the side wall (21) of the mixing chamber (2) of the print head (1). Furthermore, several injection nozzles (51) are connected via a single supply line (52) for injection.

Provided is a honeycomb structure which has CO2 adsorption performance, is easy to mold, generates less CO2 during production, is unlikely to crack during drying, and has improved water resistance. The honeycomb structure has a plurality of cell channels that pass through the inside of the honeycomb structure and are defined by partition walls containing a solid organic compound having an amino group, an organic binder, and an inorganic binder.

Honeycomb structure forming tool (100, 300) comprising: a first mold (10) disposed on an upstream side in an extrusion direction (X) of a kneaded material of a molding raw material, and in which a central portion (15) on the side of a kneaded material discharge surface (18) has a convex portion (16) projecting toward a downstream side in the extrusion direction (X); and an annular second mold (20) arranged on the downstream side of the first mold (10) and having a shape complementary to the convex region (16), wherein first kneading material introduction holes (12) and first grid slots (11) communicating with the first kneading material introduction holes (12) are formed in the central region (15) of the first mold (10), in a peripheral region (17) surrounding the central region (15) of the first mold (10), the first kneading material introduction holes (12) are formed such that they extend through the peripheral region (17) of the first mold (10), second kneading material introduction holes (22) are formed in the annular second mold (20), into which the kneading material discharged from the first kneading material introduction holes (12) formed in the peripheral region (17) of the first mold (10) is introduced, and second grid slots (21) communicating with the second kneading material introduction holes (22), Positions of the opening of the first kneading material introduction holes (12) of the peripheral region (17) of the first mold (10) do not coincide with the positions of the openings of the second kneading material introduction holes (22) of the second mold (20) at least in a part of the honeycomb structure molding tool (100, 300), an abutment surface (14) of the first mold (10) is an end face of the peripheral region (17) of the first mold (10) on a downstream side with respect to the extrusion direction (X), and an abutment surface (24) of the second mold (20) is an end face of the second mold (20) on an upstream side with respect to the extrusion direction (X), and wherein the honeycomb structure forming tool (100, 300) comprises: a gap region (35) between an outer peripheral surface of the convex portion (16) of the first mold (10) and an inner peripheral surface of the annular second mold (20) for extruding the kneaded material into a ring shape, and a groove region (31) having a plurality of grooves formed in the abutting surface (14) of the first mold (10) and / or in the abutting surface (24) of the second mold (20), and in which the movement of the kneading material between the first kneading material introduction holes (12) and the second kneading material introduction holes (22) is carried out, wherein the abutting surfaces (14, 24) of the first mold (10) and the second mold (20) are in contact with each other except for a region in which the groove region (31) is formed.

To provide a honeycomb structure capable of reducing the risk of cracking in the honeycomb structure when heated and a method for producing the same.SOLUTION: There is provided a honeycomb structure 1 which has a honeycomb structure part 2 having an outer peripheral wall 20 and a partition wall 21 which is arranged inside the outer peripheral wall 20 and dividedly forms a plurality of cells 21a forming a flow channel extending from one end face to the other end face and further has a plurality of slits 3 extending radially inwardly from an outer peripheral surface of the honeycomb structure 1 and extending in the extension direction of the cells 21a and a filler 4 filled in the plurality of slits 3, wherein when the difference between a width Y of the filler 4 and a width X of the slit 3 represented by the following expression (1) is determined for each slit 3, the difference between a maximum value A of the difference and a minimum value B of the difference represented by the following expression (2) is 0.4 mm or less. In the expression (1), X represents the width of the slit 3 on the outer peripheral surface of the honeycomb structure 1 and Y represents the width of filler 4 when looking at the filler 4 from the outside in the radial direction. Expression (1) Y-X. Expression (2) A-B.SELECTED DRAWING: Figure 1