51results about How to "Improve calendering effect" patented technology

The invention discloses a steam device of a supercalender and a paper sheet moisture regulation method therefor. In the steam device, a steam box and a spray box are arranged sequentially along paper sheet conveying direction, air atomizers are arranged in the spray box, a steam header pipe is connected with the steam box through steam branch pipes, a compressed air header pipe is connected with the air atomizers through compressed air branch pipes, and a low-pressure water header pipe is connected with the air atomizers through low-pressure water branch pipes. According to the paper sheet moisture regulation method, steam is conveyed into the steam box by the steam header pipe through the steam branch pipes and is sprayed to the surface of a paper sheet through through holes in a bottom plate; and meanwhile, compressed air is conveyed into the air atomizers by the compressed air header pipe through the compressed air branch pipes, low-pressure water is conveyed into the air atomizers by the low-pressure water header pipe through the low-pressure water branch pipes, and water mist is formed by the compressed air and the low-pressure water in the air atomizers and is sprayed to the surface of the paper sheet so as to further regulate the temperature and humidity of the paper sheet. According to the steam device of the supercalender and the paper sheet moisture regulation method therefor, the temperature and humidity of the paper sheet can be effectively regulated so as to improve the calendering effect.

The invention discloses ultrathin photovoltaic rolled glass. The ultrathin photovoltaic rolled glass comprises the following oxides by mass percentage: 71.0-73.18% of SiO2, 8.0-8.50% of CaO, 3.50-4.50% of MgO, 1.35-2.8% of Al2O3, 13.30-14.0% of Na2O, 0.6-1.0% of B2O3, 0.05-0.18% of Sb2O3, 0.05-0.1% of CeO2 and 0.01-0.012% of Fe2O3. According to the content of the oxides, the raw materials are compounded, and the photovoltaic rolled glass of which the thickness is less than 2.0 mm is prepared by founding, rolling forming and annealing processes; a glass component system is optimized, the B2O3 is introduced to reduce the glass expansion factor and increase the glass refractive index so as to play the fluxing action; the CeO2 and nitrate perform the combined action, so the clarification and decoloration effects are improved, the drawability of the glass is enhanced, and the plasticity of the photovoltaic rolled glass is improved; and the content of the Al2O3 and MgO is high, and the frit performance is improved. The final performance can satisfy the high-transparent and high-speed formability requirements of the industrial production of the photovoltaic glass of which the thickness is less than 2.0 mm, the production cost is saved, and the industrial production of the light and thin photovoltaic glass is realized.

The invention discloses an extrusion preparation method for extra-large-orifice PTFE pipe fitting paste. The extrusion preparation method comprises the following steps of: mixing raw materials; pre-forming the raw materials; extruding and forming the raw materials; tracing extrusion speed and a position of an extruded pipe fitting, controlling an extruder through a feedback signal; sintering and forming; performing position measuring and feedback control on the position of a sintered extra-large-orifice PTFE pipe fitting product; and enabling polytetrafluoroethylene dispersion resin tube to form a product. The invention further discloses extrusion equipment for extra-large-orifice PTFE pipe fitting paste. The extrusion equipment comprises an extrusion drive part, a pushing-pressing assembly, a mandrel assembly, a raw material barrel, an extrusion mould and a thermal forming assembly which are sequentially connected coaxially, wherein the extrusion drive part is mounted on the tail part of the rack; one end of the pushing-pressing assembly is connected with the extrusion drive part; the other end of the pushing-pressing assembly is connected with one end of the mandrel assembly; the raw material barrel is mounted on the front part of the rack; the extrusion mould is mounted at an outlet end of the raw material barrel; the mandrel assembly passes through the center of the raw material barrel and the center of the extrusion mould; and the thermal forming assembly is supported in front of the rack and is concentric with the raw material barrel.

The invention discloses a portable ultrasonic calendering tool. An inner sleeve (6) is disposed in an outer sleeve (4) to form an elastic telescopic mechanism through a spring (5); an ultrasonic transducer (701) is disposed in the inner sleeve (6) and electrically connected with an ultrasonic generator (1) through a cable (2); a luffing bar (703) is inside a roller supporting sleeve (8) after extending out of the inner sleeve (6), a roller adjusting nut (9) is in threaded connection to the front end of the roller supporting sleeve (8), a roller receiving cavity is formed between the roller supporting sleeve (8) and the roller adjusting nut (9), the front end of the a roller (11) contacts the surface of a workpiece, and the rear end of the roller (11) contacts the front end of the luffing bar (703); the invention has the advantages that finishing after composite ultrasonic treatment with the calendering tool is effective, pressure stress is generated on the surface of a part that is calendered, cutting resistance is greatly reduced and vibrational impact on a machine tool is reduced.

The invention provides a novel press-polishing machine which can effectively avoid invalidation of sealing equipment, comprising a frame and hard roller which can rotate and is arranged on the frame; wherein, the hard roller comprises a roller body, two shaft heads, a supporting tube and a heating device, the roller body is of a prismatical hollow structure, the two shaft heads are respectively fixedly arranged at the two ends of a roller body along the axial direction, at least one sealing equipment is arranged between the shaft heads and the roller body, at least two fixed trays are arranged in the roller body along axial direction at intervals, the supporting tube penetrates through the radial central part of the fixed trays, the heating device is arranged in the supporting tube, an input end of the heating device is electrically connected with an external power source by a revolving connector, the sealing equipment comprises an internal tray, a ring-shaped copper tube and an external tray along the axial direction of the roller body, the lateral wall of the ring-shaped copper tube is respectively connected with the adjacent external side of an internal tray and internal side of the external tray and are combined into a whole, the other side of the internal tray and the other side of the external tray are respectively connected with the shaft head and the roller body and are combined into a whole.

The invention relates to the technical field of plating presses, especially to a plating press of an improved structure. The plating press comprises a frame and a felt wrapped roll. The felt wrapped roll is connected to the frame. The felt wrapped roll comprises a top roller and a bottom roller. The plating press further comprises a roller gap adjusting system used for adjusting the gap between the top roller and the bottom roller, and a double motor apparatus. The felt wrapped roll is in driven connection with the double motor apparatus. The roller gap adjusting system comprises a PLC control system and a hydraulic pressure station. The hydraulic pressure station is connected with the felt wrapped roll. The PLC control system and the hydraulic pressure station are electrically connected. With the plating press of the improved structure of the invention, paper joints can automatically pass through the pressing zone of the felt wrapped roll, the artificial link of manual operation is decreased, the press polish effect of paper is effectively improved, and the labor intensity is reduced. The plating press of improved structure of the invention is characterized by a high automation degree and high production efficiency. The paper through the roll compacting of the plating press of the improved structure of the invention has a good quality, and the paper smoothness is much higher than the superior grade standard prescribed by national GB/T16797-2008.

The invention discloses a method for improving the plastic strain ratio r value of cold-rolled deep-punching steel. The method comprises the following steps of carrying out cold rolling by adopting acold rolling reduction rate of 66.67% - 77.78%, and then carrying out batch annealing and leveling to obtain the cold-rolled deep-punching steel. According to the method for improving the plastic strain ratio r value of the cold-rolled deep-punching steel, the method of optimizing the production process is adopted, so that the obtained cold-rolled deep-punching steel has a good plastic strain ratio r value, the stamping and drawability performance of a steel plate material is improved, the probability of breakage of the steel material in the stamping and drawability processes is reduced, and the production qualified rate is improved; and according to the method for improving the plastic strain ratio r value of the cold-rolled deep-punching steel, improvement is carried out on the basis ofan original steel production line, technological parameter control is optimized, and industrial production improvement is facilitated.

The invention provides 316L stainless steel and a preparation method thereof. The preparation method comprises the steps that EAF coarse smelting is conducted on on a mixed material of 316L stainlesssteel; AOD pre-desulfurization is conducted on the mixed material subjected to EAF coarse smelting; AOD refining is conducted on the mixed material subjected to AOD pre-desulfurization; LT slagging-off treatment is conducted on the mixed material subjected to AOD refining; VOD vacuum desulfurization is conducted on the mixed material subjected to LT slagging-off treatment; and continuous casting is conducted on the mixed material subjected to VOD vacuum desulfurization to obtain the 316L stainless steel. The 316L stainless steel prepared through the method can effectively overcome the line scale defect of the edge portion of a cold (hot) rolled plate.

The invention provides a calendering film coating machine for a multifunctional fabric, and belongs to the technical field of fabrics. The calendering film coating machine solves the problems of complicated post-arrangement procedures and poor coating adhering property in the existing fabric. The calendering film coating machine for the multifunctional fabric comprises a fabric feeding roll, a rigid hot roll, a soft roll and a fabric discharging roll in parallel, wherein the rigid hot roll is made of metal material, and an electric heater is arranged in the rigid hot roll; the soft roll is made of plastic or rubber, and the fabric feeding roll and the cloth discharging roll are respectively positioned at the two sides of the rigid hot roll; the soft roll is positioned just in front of the rigid hot roll, or is inclined to the oblique upper part of one side of the fabric discharging roll; at least one group of spray nozzles and scrapers is arranged between the rigid hot roll and the fabric discharging roll and is used for applying functional coating onto the bottom surface of the fabric; the spray nozzles are positioned at one side of the rigid hot roll, spraying openings of the spray nozzles face upwards, and the scrapers are positioned at one side of the fabric discharging roll. The calendering film coating machine has the advantage that while the fabric is calendared, the functional coating can be coated, so that the functional property of the fabric is improved.

The invention relates to a method for producing a polytetrafluoroethylene hollow fiber tube, due to the self characteristics of PTFE materials, a PTFE hollow fiber membrane can be used in a wider temperature range under more complex conditions, after calendaring, vertical stretching and radial expansion, the PTFE hollow fiber membrane has a unique micro-pore structure, the inner aperture is greater than the outer aperture, the porosity is more uniform, by changing the ratio of the vertical stretching and the radial expansion, the micro-pore morphology of the PTFE hollow fiber membrane can be controlled, according to different requirements, products with different pore sizes can be produced, production quality and production efficiency can be effectively improved, and production cost is reduced.

The invention discloses a waist liner production process which comprises the following steps of: weaving gray fabrics, singeing, performing pre-rolling hot water treatment, alkali rolling stacking, washing, oxygen bleaching treatment, stiff setting and finishing, powder point coating treatment, baking, polishing, final inspection coiling, and finished product boxing. The waist liner is good in handfeel, high in stiffness, stable in size, low in shrinkage rate, lasting in retaining effect, the stiffness is not reduced when the waist liner is arranged for a long time, and the waist liner is high in thickness, high in adhesion firmness, difficult to unglue, good in polishing effect, long in service life and environment-friendly.

The hydraulic sectional controllable super calender for paper making includes frame, planishing roller connected to the frame, top roller and bottom roller, hydraulic controller connected to frame. It features the controllable top roller and bottom roller with planishing roller weight compensating units set between the roller end and the frame, and the fast hydraulic separator set below the bottom roller. The calender can raise greatly the transverse smoothness of paper, planish great-width paper, make the top and bottom roller separate timely to avoid dry friction and damage when the paper breaks.

The invention provides a heat-resistant nylon 66 as-spun filament which comprises nylon 66 and a heat-resistant agent in a ratio of (100-1000):1; and the heat-resistant agent comprises copper acetate and potassium iodide in a ratio of 1:(3-20). The invention also provides an indirect spinning method of the heat-resistant nylon 66 as-spun filament and application of the heat-resistant nylon 66 as-spun filament in producing high-elasticity weft. The production cost of the heat-resistant nylon 66 as-spun filament is greatly lowered; and the copper acetate has favorable heat stability in the polymerization or spinning process, and can not be lost or decomposed, so that the heat resistance is greatly enhanced. Thus, after the spun weft is subjected to 240-DEG C heat treatment for 3 minutes, the high power is 312cN, and the elongation percentage is 245%; and after gum dipping, the high power is greater than 295cN, and the elongation percentage is greater than 228%, thereby completely satisfying the requirements of the radial tire builder fabric for the elastic weft.

The invention provides a controllable crown roll and belongs to the technical field of papermaking equipment. The controllable crown roll is characterized in that a containing groove (8) is formed in the side face of a mandrel (1), an oil inlet hole (10) communicated with a static-pressure bearing piston (2) and a transition hole (13) communicated with the end face of the mandrel (1) are formed in the containing groove (8), and an oil pipe (12) communicated with the transition hole (13) and the oil inlet hole (10) is arranged in the containing groove (8). The containing groove is formed in the side face of the mandrel of the controllable crown roll, the oil pipe is installed in the containing groove, hydraulic oil is conveyed to the static-pressure bearing piston through the oil inlet hole and the transition hole in the containing groove, an axial through hole does not need to be machined in the middle of the mandrel during machining, and machining difficulty is greatly reduced. Besides, installation is convenient, the sealing requirement is low, maintenance is hardly needed, people only need to replace the damaged oil pipe or a sealing element, and maintenance difficulty is greatly reduced.

The invention relates to water-based buffing oil for paper and a preparation method thereof. In the invention, thermoplastic acrylic emulsion as the main film forming emulsion, thermoplastic acrylic resin as dispersion resin and isobutanol as an initiator are dispersed at high speed at normal temperature, then other additives are gradually added, ployethylene wax is hydrolyzed by de-ionized water to generate a release agent with high temperature resistant effect, and then the release agent is added to the formula. The water-based buffing oil for paper obtained in the invention has little toxicity and odor, small environment pollution, high luster, especially good high temperature resistance and demolding property, and good stability in storage and use, and can be widely used for glazing and buffing finishing of the surfaces of various paper products.

The invention discloses calendering production equipment. The calendaring production equipment comprises a calendaring main machine, a rack, a first stripping roller set, a cooling guide roller set, an auxiliary mechanism and a calendering mechanism, the calendaring main machine is arranged on the rack, one end of the first stripping roller set is located on one side of the upper end of the calendaring main machine, the calendering mechanism is arranged on the lower side of the other end of the first stripping roller set, the upper end of the cooling guide roller set is located on one side ofthe calendering mechanism, the auxiliary mechanism is arranged at the lower end of the cooling guide roller set; and the calendering mechanism comprises a first steel roller and a second steel roller.The calendering production equipment can calender thermoplastic materials, and the calendering effect is good.