120 results about "Extrusion" patented technology

In on aspect, the invention includes a microcarrier bead having a porous three-dimensional core having (a) a polymeric porous three-dimensional body having porosity of about 15 to about 90% such that at least 99% of pores are interconnected and have diameters of at most 200 microns, (b) an outer protective layer and optionally (c) a filler. In another aspect, the invention includes a method of making an artificial scaffold wherein a scaffolding material is extruded into a coolant and thereby creating a porous material having a porosity of between 15-90% such that at least 99% of pores are interconnected and have diameters of at most 200 microns.

The invention relates to a method for producing energy-saving sintered bricks from mud. The sintered brick is made from river mud, municipal sludge and sea mud as raw material, by mixing with silica-based inorganic binder at a certain proportion, ageing, extruding with a extrusion molding machine to obtain blanks, cutting the blanks with a cutter, drying, sintering and burning. The invention makes full use of mud and the additional amount of mud is high up to 50%. The invention realizes energy and resource conservation and helps develop the circular economy and realize the comprehensive utilization of resources. The produced energy-saving sintered brick has the advantages of high porosity and good heat-insulation effect. During the sintering process, the flue gas is circularly treated, the exhaust gas is treated with acidic and alkaline solutions to remove harmful substances (such as dioxin) from the exhaust gas, and harmful substances such as heavy metals are solidified, therefore, the whole production process and the final product do not cause environmental pollution or hazard.

The present invention relates to a process for the manufacture of structural hybrid thermoplastic composites where organic and inorganic fibres are well dispersed in a thermoplastic matrix. The process comprises defibrillating the organic fibres with or without the presence of surface active agents using a mixer at a high shear and at a temperature lower than the decomposition temperature of organic fibres and melting point of the surface active agents to separate the hydrogen bonded fibres and generate microfibres, followed by blending and dispersion of the organic fibres in the thermoplastic matrix to produce a fibre composite, followed by further blending and dispersion of the fibre composite with inorganic fibres at a low shear to get the moldable hybrid composite, followed by extrusion, injection or compression-injection molding. Low shear mixing maintains the inorganic fibre length. The process produces high performance composite materials having excellent performance properties and are ideally suited for automotive, aerospace, furniture, sports articles, upholstery and other structural and semi-structural applications.

The invention relates to a high-temperature iron-based zeolite molecular sieve honeycomb type denitration catalyst and a preparation method thereof, and belongs to the technical field of atmospheric pollution treatment technologies and environmentally friendly catalyzing materials. The preparation method comprises the following steps: mixing ferrous salts with ferrite; synthesizing a zeolite molecular sieve, natural zeolite molecular sieve powder, attapulgite clay or kaolin, glass fibers, an organic binding agent, wood pulp or sesbania cannabina powder, stearic acid and glycerinum; and carrying out mixing, ageing, extrusion forming, drying and roasting to obtain the iron-based zeolite molecular sieve honeycomb type denitration catalyst. According to the catalyst, the zeolite molecular sieve and natural raw mineral materials which have excellent thermal stability are used as carriers, and the running stability, the sintering resistance and the mechanical strength of the catalyst in a high-temperature environment are improved. The obtained honeycomb type denitration catalyst has good water resistance and sulfur poisoning resistance, and the conversion ratio of oxynitride is greater than 90% under the conditions that the temperature is in the high-temperature range of 400-600 DEG C and the air speed is 10,000 h<-1>.

The invention relates to high-strength Mg-Y-Ni-Mn alloy and a manufacturing method thereof. The high-strength Mg-Y-Ni-Mn alloy comprises 5.0-12.5% of Y, 2.0-6.0% of Ni, 0.4-1.0% of Mn and the balance magnesium and inevitable impurities. The alloy is manufactured through the following process of material preparing, vacuum melting ingot casting, cyclic homogenizing annealing, extruding and double aging. Materials do not need to be refined; the extrusion ratio is low (lambda=11); the limitations that the manufacturing process of high-performance magnesium alloy is complex and the manufacturing conditions are rigorous are broken; the process is simple; transportability is high; operation is easy, the room temperature tensile strength and the yield strength of the alloy are obviously improved; the high-performance magnesium alloy can be directly produced under existing industrial conditions; the problem that the application of the Mg alloy is limited due to the poor mechanical performance of the Mg alloy is solved; and the application range of the magnesium alloy is expanded.

The invention discloses a single-screw extruder comprising a frame, a bearing chamber, a transitional shaft, a seal cover, a feed inlet, a discharge sleeve, a discharge outlet, a screw tapered shaft and the like. One end of the screw tapered shaft penetrates the left of the seal cover and is in insetting connection with the head of the transitional shaft. The discharge side of the other end of the screw tapered shaft is mounted within the discharge sleeve and is connected with a moving cantilever of the discharge sleeve. The screw tapered shaft is provided with a plurality of spiral blades; a screen plate is disposed between the screw tapered shaft and the seal cover. The screw tapered shaft in such a shape that the diameter of the screw tapered shaft decreases and then increases from the feed end to the discharge end; the pitch of the spiral blades gradually increases from the feed end to the discharge end; the diameter of the part, at the first blade and close to the discharge sleeve, of the screw tapered shaft is 396mm to 398mm, and the diameter of the part, at the third blade and close to the discharge sleeve, of the discharge sleeve is 386mm to 392mm; the discharge sleeve is tubular, with the inner diameter being 400mm to 406mm; a distance between the discharge sleeve and the screw tapered shaft is 7mm to 10mm. The single-screw extruder has the advantages such that extrusion, tearing and dewatering are effective and the screw tapered shaft rarely abrades.

The invention provides a 3D (three-dimensional) printing extruder, a 3D printer and a manufacturing method of the 3D printing extruder. The 3D printing extruder comprises a wire change part and a printing head, wherein the wire change part is equipped with multiple silk input ends, multiple conveying channels and a silk output end, each silk input end is connected with the silk output end throughone conveying channel, the printing head is provided with an extrusion channel, a feeding port of the extrusion channel is in butted communication with the silk output end, the extrusion channel is provided with a discharging port at the outermost end and is conical, the diameter of the extrusion channel is monotonically decreased from the feeding port to the discharging port, and the diameter ofthe feeding port is equal to that of the silk output end; the conveying channels are arranged in a bending manner, and the conveying channels and the curvature center of the conveying channels are located on the same side of an axis based on the extrusion channel. With the adoption of the special bending setting of the conveying channels and the extrusion channel, the conveying channels and the extrusion channel are free of steps, printing materials are input more smoothly and easily, no obvious bridging is produced, and the condition of blockage is prevented.

A high-precision 3D printer comprises a base, wherein a supporting plate is vertically fixed on the base; a workbench device moving in an X axis is arranged on the base; a printing mechanism is arranged on the supporting plate; the printing mechanism comprises an extrusion feeding device and a printing nozzle device; the extrusion feeding device comprises a fixing block; a connector and an extrusion wheel set are fixed to the upper end and the lower end of the fixing block respectively; the printing nozzle device comprises a throat pipe, a heating tube and a printing nozzle. The high-precision3D printer is reasonable and contact in structure; through the addition of an optical position detecting component into a motion control system and coordination of the workbench device and the printing mechanism, stepping motors in three directions are controlled by the same main control panel, and the main control panel is provided with a touch screen, so that the high-precision 3D printer is convenient and easy to operate and high in printing precision, has the advantage of lower cost than that of the conventional motion control system and can meet a requirement on the 40[mu]m printing precision; the high-precision control of the 3D printer is achieved, and the high-precision 3D printer is good in using effect and suitable for popularization.

The invention discloses a preparation method for an Nb-Zr alloy/Cu multi-core composite wire. The preparation method includes the following steps that firstly, Nb and Zr are melted to be cast into an Nb-Zr alloy cast ingot; secondly, hot extrusion is conducted, and an Nb-Zr alloy bar is obtained; thirdly, drawing is conducted, and an Nb-Zr alloy wire is obtained; fourthly, pretreatment is conducted; fifthly, primary compounding is conducted, and a pretreated Nb-Zr alloy/Cu primary composite wire is obtained; and sixthly, secondary compounding is conducted, and the Nb-Zr alloy/Cu multi-core composite wire is obtained. By means of the preparation method, due to electric arc melting and with the combination of a bundle drawing technology, preparation of the multi-core composite wire where core wires are evenly distributed and the organization structure is stable is successfully achieved; and the wire prepared through the method has high strength and high conductivity and also has good oxidation resisting capability and excellent corrosion resisting capability.

The invention relates to a tungsten-base composite material applied to ray shielding and a preparation method thereof. The tungsten-base composite material comprises the following components in parts by weight: 100 parts of rubber, 200-2000 parts of tungsten powder, 0.5-50 parts of tungsten fiber, 0.5-150 parts of barite powder and/or 0.5-250 parts of rare-earth oxide powder, 0.5-6 parts of compatilizer, 3-9 parts of activator, 0.5-50 parts of plasticizer, 0.5-3 parts of anti-aging agent, 0.05-0.5 part of anti-scorching agent, 0.5-3 parts of vulcanization accelerator and 0.5-3 parts of vulcanizing agent. The preparation method comprises the following steps: (1) proportioning and preparation of raw materials; (2) preparation of mixed filler; (3) mixing of rubber matrix; (4) extrusion and calendering; and (5) vulcanization molding and the like. The composite material is free of lead, and has the advantages of favorable ray shielding performance, favorable physical and mechanical properties and the like.

The invention relates to a screw bolt with isothermal oil for cooling the inner wall of the front section of an EPE/EPS single screw bolt foaming extruding machine, which belongs to the field of single screw bolt foaming extruding machines taking LDPE/GPPS as main raw materials according to the principle of physical foaming by injecting foaming agent to produce EPE/EPS sheets. The invention solves the technical problem that the prior EPE/EPS single screw bolt foaming extruding machine can not cool material sectionally, thereby influencing the quality of products. The invention adopts the technical scheme that the centers of the front section and the rear section of the screw bolt are provided with different oil returning channels; cooling oil is pumped into the bottom end of a central blind hole in the front section of the screw bolt after passing through a small oil inlet pipe to return through the inner wall of the central blind hole in the front section of the screw bolt and enters a passage between a small oil inlet pipe and a large return pipe in a central through hole in the rear section of the screw bolt after cooling the front section of the screw bolt; and because an air heat-insulating layer exists between the inner wall of the central through hole in the rear section of the screw bolt and the outer wall of the large return pipe, the cooling oil can not cool the rear section of the screw bolt. The invention can be widely applied to the field of processes requiring the material cooling sectionally.

The invention discloses an antibacterial and hydrolysis-resistant thermoplastic polyurethane elastomer and a preparation method of the polyurethane elastomer, and belongs to the field of high molecular materials. The polyurethane elastomer is prepared from the following raw materials by mass percentage: 40-70% of hydroxyl-terminated polyhydric alcohol, 20-40% of diisocyanate, 4-15% of micromolecular dihydric alcohol chain extender, 1-5% of hydrolysis stabilizer, 0.1-0.5% of antioxidant, 0.1-0.5% of light stabilizer, 0.1-0.5% of mildewproof agent, 0.5-1% of lubricant and 0.001-0.005% of catalyst. The mildewproof agent is added, so that the antibacterial property of the polyurethane elastomer is improved, and the service life of the polyurethane elastomer is prolonged; the hydrolysis stabilizer is added, so that the problem of degradation of the polyurethane elastomer in a hygrothermal environment is solved; and compared with current commonly used disc method and casting method technologies, a product synthetized by the polyurethane elastomer has the characteristics of stable extrusion, uniform molecular weight and few colloidal crystal point.

The invention discloses an extrusion type rubber bushing structure. The rubber bushing structure comprises a bushing inner pipe, a bushing outer pipe and a rubber layer, wherein the rubber layer is vulcanized between the bushing inner pipe and the bushing outer pipe; a bushing inner hole is formed on the bushing inner pipe; the bushing outer pipe is provided with an outer pipe turned-over edge; the rubber layer is vulcanized till a rubber layer turned-over edge is formed on the outer pipe turned-over edge; two groups of notches are respectively formed on the outer pipe turned-over edge and the rubber layer turned-over edge in the same positions; and a slotted hole is formed on the rubber layer. When a rubber bushing is extruded, supporting points (namely, the notches) for exerting force in an opposite direction are arranged on the sleeve of the bushing, so that the bushing can be extruded conveniently. The rubber bushing has the advantages that the structure is simple; the replacement is convenient; no component is added; and the cost is saved.

The invention relates to the technical field of environment-friendly and energy-saving vermicelli manufacturing devices, and discloses a novel environment-friendly and energy-saving vermicelli manufacturing device which comprises a base plate. A box is fixedly connected to the top of the base plate. A motor is fixedly connected to one side of the top of the box through a supporting plate. the outer surface of an output shaft of the motor is sleeved with a first belt pulley, a gear is rotationally connected to the portion, on one side of the motor, of the top of the box, a second belt pulley isfixedly connected to the front face of the gear, the outer surface of the second belt pulley is in transmission connection with the outer surface of the first belt pulley through a belt, a supportingcolumn is fixedly connected to the portion, on one side of the gear, of the top of the box, and a straight toothed plate is in sliding connection with one side of the supporting column. When the novel environment-friendly and energy-saving vermicelli manufacturing device manufactures sweet potato vermicelli, an extrusion plate can be driven by a motor to flexibly extrude powder syrup, it is ensured that no crack is formed in the vermicelli manufacturing process, and the vermicelli production efficiency is improved.

The invention discloses a device and a method for step type hot extrusion preparation of an Nd-phase-rich Nd2Fe14B/alpha-Fe permanent magnet, and relates to a device and a method of preparation of the Nd2Fe14B/alpha-Fe permanent magnet. The device and the method for step type hot extrusion preparation of the Nd-phase-rich Nd2Fe14B/alpha-Fe permanent magnet solve the technical bottleneck of preparing a block nano complex phase magnet. The device is formed by an extrusion puncher pin, a primary extrusion die, a secondary extrusion die, a die fixing sleeve and a heating device and the like. The method mainly comprises that Nd-phase-rich Nd2Fe14B powder is mixed with alpha-Fe powder, the powder mixed by a ball mill is stirred, a cold pressing blank of the Nd-phase-rich Nd2Fe14B powder and the alpha-Fe powder is prefabricated, vacuum packaging is carried out, the blank and the dies are heated, and step hot extrusion is carried out. The device and the method for step type hot extrusion preparation of the Nd-phase-rich Nd2Fe14B/alpha-Fe permanent magnet are used for preparing a block dense high-performance nano coupling permanent magnet.

The invention provides a preparation technology for an aluminum alloy groove piece. The preparation technology solves the problems that an aluminum alloy section bar is little in deformation and low in rejection rate, saves energy, and is environment-friendly in the manufacturing process. The manufacturing process of the aluminum alloy section bar sequentially comprises the following steps that 1) aluminum is smelted and cast into aluminum-cast sticks; 2) squeezing forming is conducted; 3) aging treatment is conducted; 4) cold treatment is conducted. According to the preparation technology of the aluminum alloy groove piece, due to the fact that alloy elements are reasonably optimized and matched, the intensity, the corrosion-resisting performance and weather-proof performance of the aluminum alloy section bar are improved, the stretching-resisting strength at the indoor temperature can be 480-530 MPa, the average grain size can be 0.018-0.035 mm, the rejection rate of the section bar is greatly reduced and the forming of the section bar is stable in the water cooling state by controlling the section bar extrusion speed and extrusion pressure, uniformity of internal structures of aluminum materials and refining of crystalline grains are improved, and the quality and the machining performance of the aluminum alloy section bar are improved.

The invention provides a sealing structure and a gate valve with the sealing structure. The sealing structure is suitable for being arranged between a valve rod and a valve deck, wherein the valve deck is arranged on the valve rod in a sleeving manner. The sealing structure comprises a first seal, a second seal, at least one third seal and at least one fourth seal. The first seal is used for sealing one end of the valve rod. The second seal is used for sealing the other end of the valve rod. The third seals are arranged between the first seal and the second seal, are close to the first seal and can replace the first seal to achieve the sealing function only when sealing of the first seal fails. The fourth seals are arranged between the first seal and the second seal, are close to the second seal and can replace the second seal to achieve the sealing function only when sealing of the second seal fails. Due to the fact that the third seals and the fourth seals are arranged, the sealing structure can achieve continuous sealing, and a good sealing effect can be guaranteed. In addition, when the first seal and the second seal carry out seal normally, the third seals and the fourth seals do not bear liquid pressure, deformation is small, extrusion force between the sealing structure and the valve rod is small, abrasion is small, and the service life is long.

The invention relates to a preparation method of special coating resin composition for polyethylene. The preparation method comprises the following steps of: adding a peroxide crosslinking agent accounting for 0.001-0.5% of low-density polyethylene into the low-density polyethylene, and mixing and granulating to prepare the coating resin for the polyethylene, wherein the peroxide crosslinking agent consists of alkyl peroxide, lipid peroxide, diacyl peroxide and hydroperoxide, each of which accounts for 55-85%/5-15%/5-15%/5-15% according to the percentage by weight; the extrusion temperature of an extrusion machine is 150-250 DEG C, and the rotating speed of a screw is 20-60r/min; and the MFR (Melt Flow Rate) of the low-density polyethylene is 5.0-10.0g/10min, and the density is 0.915-0.925g/cm<3>. The special coating resin composition has the characteristics of high strength, good toughness, strong adhesive force and uniform filing forming and the like and is mainly used for surface coating, paper-plastic lamination, a bonding layer and film lamination of plastic woven bags.

The invention relates to an indoor-laying optical fiber and a manufacture method thereof. The optical fiber comprises a naked optical fiber, the periphery of the naked optical fiber is sequentially coated with a buffer layer and a transient layer, and the transient layer is wrapped with an external protection layer. The processing of the optical fiber is carried out on a same assembly from optical fiber pre-manufactured rod drawing, coating and extrusion molding to be formed in one step. The invention has the beneficial effects that: 1. the invention has simple structure, thin diameter, good bending performance, certain drawing-resistant capacity and flame-retardant water-proof performance, low cost and high cost performance; 2. the invention can be directly used for wiring the interior, ships and automobiles, and the wiring is continuous, convenient and room-saving; and 3. the whole optical fiber is formed from drawing in one step, thus enhancing working efficiency and lowering manufacture cost; and the processed optical fiber is good in quality and low in inner stress, can resist the influence of external force on the optical fiber during manufacturing and using, and avoid the damage and influence on the optical fiber caused by re-processing and heating on the optical fiber.

The invention belongs to the field of manufacturing method of plate strips, in particular to a high-precision plate strip production method, which comprises the following steps: extruding a raw material out of a tube by a continuous extruder in a continuous extrusion mode; cooling the tube by cooling liquid and performing on-line shearing to form a plate; and performing on-line fine rolling of the plate to form a plate strip. When the method is used for producing plate strips, the process in simple, the speed is high, the efficiency is high, the energy consumption is small, energy can be saved, and particularly large high-precision plate strips can be produced.

The invention discloses a reactive dye formula for cotton/linen blending and a preparing method thereof. The reactive dye formula for cotton/linen blending is prepared from, by weight, 57-65% of dye, 0.1-1% of peregal, 0.4-0.6% of wet rubbing fastness improver, 1-5% of fixer, 0.1-1% of ricinoleic acid butyl ester sulphate, 0.1-2% of sodium hexametaphosphate, 0.5-1% of tributyl phosphate, 2% of soda ash, 20% of sodium chloride and the balance deionized water. The components are placed in a high-speed mixer or rotary mixer according to the formula for mixing, then wet particles are obtained through extrusion conducted by means of a pelletizer with the caliber of 1 mm, drying is conducted by means of a drier, and then polyhedron particles are obtained through sieving. The reactive dye formula for cotton/linen blending and the preparing method thereof have the advantage that by the adoption of the dye, the wet rubbing fastness and fixation rate of cotton/linen blended fabric are improved effectively.

Provided is a use method of an oil removal device. The oil removal device comprises a soup pot and an oil remover. The oil remover comprises a pot cover, an extrusion casing, a motor, a guide cylinder, a guide column, a guide sleeve, a lead screw and a controller. The guide cylinder is fixedly connected with the pot cover, the lead screw is meshed with threads of a guide threaded hole of the guide cylinder, and the lead screw is further connected with a rotating shaft of the motor. A motor base of the motor is fixedly connected with the extrusion casing. The pot cover is provided with an oil removal hole and an oil collection groove which are communicated with each other. The pot cover is further provided with a seal ring and an elastic buckle used for connecting the pot cover and the soup pot. During use, the controller controls the motor to drive the lead screw to rotate, the lead screw drives the extrusion casing to move downwards, the extrusion casing moves downwards to squeeze soup in the soup pot so as to raise soup oil on the surface of the soup, the liquid level of the soup oil is controlled by a first liquid level switch and a second liquid level switch of the controller, so the soup oil is discharged into the oil collection groove through the oil removal hole, accordingly the purpose of removing the soup oil on the surface of the soup is achieved, and the influence of edible soup oil on human health is reduced.

The invention provides an extrusion barrel and a food processor. The extrusion barrel comprises an extrusion barrel shell, a juice outlet, an opening sealing device and a residue outlet. The inner side wall of the extrusion barrel shell is provided with extrusion ribs; the juice outlet is formed in the side wall of the extrusion barrel shell and used for discharging food juice after separation ofthe juice from residues; the opening sealing device is movably mounted at the juice outlet in the extrusion barrel shell, and the movable opening sealing device can open or close the juice outlet; theresidue outlet is formed in one end portion of the extrusion barrel shell and used for discharging the food residues after separation of the juice from the residues. According to the embodiment, thejuice outlet can be closed by the opening sealing device when a juice receiving container is replaced to prevent the food juice from dripping on a table top or a product on which the juice receiving container is placed, so that waste of the food juice is avoided, and the hygiene of the table top or the product for placing the juice receiving container is ensured. At the same time, according to thearrangement above, the juice outlet can also be closed by using the opening sealing device when food materials are processed so that mixed food of the food juice and the food residues can be prepared, more functions of the extrusion barrel can be achieved, and the cost performance of products is improved.

The invention discloses steamed total millet flour cone-shaped bread and a producing method thereof. The producing method includes following steps: (1) milling the millet, sieving the milled millet through a sieve in 80-100 meshes, adjusting the content of water to be 16%, feeding the millet into a material-feeding hopper of a dual-screw extrusion puffing machine for performing extrusion puffing, re-milling the puffed millet and sieving the re-milled puffed millet through a sieve in 80-100 meshes to obtain millet extrusion powder; and (2) mixing millet starch, water, baking powder, instant dry yeast and the millet extrusion powder obtained in the step (1) and successively performing following operations: kneading, shaping, fermentation and steaming to obtain the steamed total millet flour cone-shaped bread. The steamed total millet flour cone-shaped bread is rich in nutrition, is good in palatability, is convenient to eat and has a wide market prospect.