104results about How to "Ensure product quality stability" patented technology

The invention relates to a grain boundary diffusion method for improving properties of sintered NdFeB magnets. The grain boundary diffusion method comprises the following steps of stacking sintered NdFeB magnets and diffusion alloy sheets together and placing in a hot-pressing furnace; vacuumizing the hot-pressing furnace until the vacuum degree reaches a set value, heating the hot-pressing furnace, and when the temperature of the hot-pressing furnace reaches a set value, beginning to exert a pressure and maintaining the pressure and putting the diffused sample into a high-vacuum furnace for annealing, wherein the diffusion alloy sheets are low-melting-point eutectic diffusion alloys and are represented by R-TM, R is one or more of Sc, Y, La, Ce, Pr or Nd and TM is one or more of Ti, V, Cr, Mn, Fe, Co, Ni, Cu and Zn. Compared with the prior art, the sintered NdFeB magnets modified by the pressure diffusion method, which is provided by the invention, have the advantages of large diffusion depth of a diffusion agent, uniform distribution of grain boundary phases, high coercivity and the like, especially, low-melting-point diffusion alloys designed by the invention are free of expensive heavy rare earth element dysprosium and thus the cost of the raw materials is relatively low, the diffusion temperature is low and the energy consumption in the diffusion process is small.

The invention provides a Ti (C, N)-based metal ceramic cutter material and a preparation method thereof. The cutter material comprises the following raw materials in percentage by mass: 20.5-55. 5 percent of Ti (C0.5, N0.5), 0-35.5 percent of (Ti39.8W46.9) C, 0-15 percent of WC, 0-12 percent of TiC, 10-11 percent of Mo2C, 5-7 percent of TaC, 0-1.5 percent of VC, 6-9 percent of Co, 6-9 percent of Ni and 0-1 percent of C. The preparation method comprises the steps of material mixing and wet milling, spray granulation, die forming and degreasing and sintering. The material provided by the invention has the beneficial effects that the bending strength, the hardness, the fracture toughness, the wear resistance and the like of Ti (C, N)-based metal ceramic are improved by adjusting the relationship between carbide and carbonitride, thereby effectively improving the cutting performance of a cutter.

The invention discloses a vertical continuous-cooling crystallization machine. The vertical continuous-cooling crystallization machine comprises an outer cylinder and a spiral stirring paddle. The spiral stirring paddle is erected in the outer cylinder. The outer wall of the outer cylinder is provided with a cooling water jacket. The spiral stirring paddle is arranged in a top suspension way. A shaft of the spiral stirring paddle has a sleeve-type hollow shaft structure. Cavities are formed in blades of the spiral stirring paddle. Upper and low ends of each one of the cavities are communicated with the shaft having the sleeve-type hollow shaft structure. The vertical continuous-cooling crystallization machine has the advantages that 1, a housing jacket and the hollow blades of the spiral stirring paddle are combined and cooling water is fed into the combined structures simultaneously so that a heat exchange area is greatly improved and a crystal yield is greatly improved; 2, the spiral stirring paddle can rotate by 360 degrees so that no-dead corner medium cooling is realized, formation of crystal nucleuses and stable and natural growth of crystals are promoted, a cooling rate is improved and product quality stability is guaranteed; and 3, intelligent configuration improves productivity and reduces a cost.

The invention discloses a processing technology for white carbon black with the low water content. The processing technology provided by the invention has the advantages that rice hull ash is utilized as a raw material, soluble glass is obtained through the rice hull ash subjected to alkali lye treatment, and a white carbon black finished product is obtained through acidification sedimentation and three-section drying. The processing technology provided by the invention has the advantages that the technology steps are rigorous, technology parameters are definite, the white carbon black is subjected to three-section drying treatment, the content of water of the white carbon black is low, the particle size distribution is uniform, particles are small, energy is recycled, and the white carbon black processing technology is environmentally-friendly and efficient.

The invention relates to a method for pre-stretch bending of a metal thick slab and numerical control machining forming of a high-rib wallboard with curvature, and mainly solves the problems that residual stress is high, the streamline of a molded surface is poor, deviation between an actual curved surface shape and a theoretical shape is large and the like in the conventional forming method. The method mainly comprises the following steps of: the pre-stretch bending of the metal thick slab, and the numerical control machining forming of the high-rib wallboard with the curvature. The method aims to greatly reduce the workload of the subsequent assembly process, improve production efficiency and whole quality and prolong service life. The residual stress in the slab is controlled by stretching and bending deformation modes in the pre-stretch bending process, so that the shape of the slab is approximate to the curved surface shape of the wallboard; the release process of the residual stress is controlled, and new residual stress is not generated or a little new residual stress is generated by controlling numerical control machining environment, process and parameters in the wallboard forming process, so that the forming quality of the wallboard is ensured; and numerical control machining is used as the final process of wallboard production in the method, so that product quality and process stability can be ensured to a great extent, and the designed theoretical shape of the wallboard can be ensured to the greatest extent.

The invention discloses an automatic machining machine tool for a four-station valve body, which comprises a rotary disc, wherein the rotary disc is connected with a gear through a clutch, and a rack moves left and right to drive the gear meshed with the rack to rotate under the action of a hydraulic cylinder; the gear drives the rotary disc to rotate through the clutch to realize the conversion of the stations, and four stations are uniformly distributed on the circumference of the rotary disc; a first station is positioned right above the rotary disc, a second station is positioned at the left of the rotary disc, a third station is positioned right below the rotary disc, and a fourth station is positioned at the right of the rotary disc; a workpiece to be machined is installed and positioned on the first station, is bored on the second station, is tapped on the third station, and is taken down on the fourth station so as to complete the four working procedures of feeding, boring, tapping and discharging. According to the automatic machining machine tool provided by the invention, the defect that the workpiece needs to be machined on a plurality of machine tools is overcome, the machining efficiency is greatly improved, the labor cost is saved, and the stability of product quality is ensured.

The invention relates to an external-cooling-into-internal-cooling tool handle and an external-cooling-into-internal-cooling tool handle assembly. The external-cooling-into-internal-cooling tool handle comprises a tool handle body, a positioning ring, a bearing base, bearings, a positioning pillar, an elastic piece and a tool changing block. When the tool handle body needs to be assembled or takendown, a mechanical arm grabs the tool handle body to make the tool handle body stretch into or separated from a main shaft, then the tool handle body moves downwards or acts on the positioning pillardownwards, then a first clamping part and a second clamping part are loosened or clamped, and then the tool handle body freely rotates or gets limited. Internal cooling lubricating is achieved through an internal cooling tool; meanwhile, positioning is achieved through the first clamping part on the positioning ring and the second clamping part on the positioning pillar, the purpose of quickly changing a tool handle is achieved, manual adjustment of the position or jetting angle of a nozzle is avoided, the efficiency is improved, the labor cost is lowered, and quality stability of the productis guaranteed.

The invention discloses an automatic pressing device of split pins. The automatic pressing device of split pins comprises a pressing machine, an automatic feeder, an split pin pre-tightening mechanism, a clamp part, a servo indexing rotation disc part, a safe grating part, a vision detection device and an electric control cabinet operation panel, wherein the automatic feeder, the split pin pre-tightening mechanism, the servo indexing rotation disc part, the safe grating part and the vision detection device are mounted on a platform surface of the pressing machine; the servo indexing rotation disc part is connected with the clamp part; multi-station accurate rotation and indexing of the clamp part can be achieved; the split pin pre-tightening mechanism is arranged in a second station direction and is aligned to a center position of a punching head of the pressing machine, so that center positions of the pre-tightened split pins, the center position of the punching head of the pressing machine and a center position of a workpiece pin hole are concentric. Through the automatic pressing device of the split pins, the defects of inconsistent directions of split pins, great pressing size accuracy deviation and low production efficiency during manually pressing are solved.

A deacidification apparatus and a deacidification process using the apparatus are disclosed. The deacidification apparatus includes a deacidification furnace, of which a furnace upper section, a furnace middle section and a furnace lower section are provided in upper, middle and lower portions respectively, wherein a gas-solid mixture inlet (1), a exhaust outlet (3) and a filtered air port (2) are provided on the furnace upper section, a product outlet (13) is provided on the furnace lower section, the upper portion of the deacidification is mounted with a filter (5) to which the gas-solid mixture inlet (1), the exhaust outlet (2) and the filtered air port (3) are connected, the filtered air port (2) is connected with a gas pulse device and a vacuum device by a three-way connecting device, and the exhaust outlet (3) is connected with atmosphere or connected with the vacuum device.

The invention relates to a continuous preparation method of polyester polyol. The method comprises three reaction stages including esterification, flash evaporation and polycondensation. The esterification reaction is performed at 130-260 DEG C, preferably, 180-240 DEG C and more preferably, 200-230 DEG C, the esterification rate is about 50%-95%, and the loss of raw material polyhydric alcohols can be reduced when the esterification reaction is performed at the higher temperature. Small molecules such as water and the like can be removed efficiently and quickly through flash evaporation, thereaction speed can be increased, the production time can be saved, and energy consumption can be reduced. A mixture of a catalyst and polyester polyol is fed, catalyst hydrolysis can be effectively reduced in thermodynamics and kinetics in a ligand change manner, and the dosage of the catalyst can be reduced. The polyester polyol produced with the technology has the advantages of low catalyst residues, low color number and stable product quality.

The invention discloses an automatic assembling device for a flexible shaft. The flexible shaft is formed by assembling connectors at the two ends of a spring. The automatic assembling device for the flexible shaft comprises an automatic spring supply mechanism, a spring positioning, clamping and feeding mechanism, two automatic connector supply mechanisms, two connector positioning and clamping rotating shaft mechanisms and two rotating torque control mechanisms. According to the automatic assembling device for the flexible shaft, positioning and screwing of the spring and the connectors of the flexible shaft are achieved through the automatic mechanical devices such as the automatic spring supply mechanism, and the automatic degree is high; torque clutches are adopted in the rotating torque control mechanisms; when torque is increased to a certain extent, driving force is lost between the torque clutches and rotating shafts of servo motors of the control mechanisms; scrapped products caused when the torque is excessively large and the spring and the connectors are screwed excessively are avoided, and the production cost is lowered; and the clutch torque can be adjusted by adjusting adjustment screw rods and nuts, and the requirement for assembling different flexible shafts is met.

The invention discloses a donkey-hide gelatin cake cutting machine. The donkey-hide gelatin cake cutting machine comprises a screw cap, a material pushing bar, a knife dish component, a material holding box, a machine body, foundations, a motor and a control switch, wherein a cover cap and a material pushing cavity are arranged on the screw cap, and an opening at the bottom of the screw cap is communicated with the knife dish component; the material pushing bar can be inserted into a hollow passageway of the material pushing cavity; the knife dish component is installed at the upper part of the machine body, and a cutting blade is horizontally installed in a weld knife dish and can rotate around a rotating shaft; the material holding box is movably arranged on one side of the machine body and is located below a discharge hole of the weld knife dish; the machine body provides installing bases for all the components; the foundations comprise a machine body foundation and an electronic control module installed on the machine body foundation; the motor is installed inside the machine body through a motor support and is connected to the rotating shaft of the cutting blade; the control switch controls start and stop of the motor. According to the donkey-hide gelatin cake cutting machine, quantitative cutting of the decocted donkey-hide gelatin cake barstock can be achieved, blanking is uniform and stable, bonding and damage of donkey-hide gelatin blocks can be avoided, appearance of a donkey-hide gelatin cake slice product is improved, convenience is brought to eating of a client, the situation that a finger accidentally touches the cutting blade from a material feeding opening is prevented, and thus the safety of operating personnel is guaranteed.

The invention relates to a high-transparency and low-shrinkage thermoplastic polyurethane elastomer and a preparation method thereof and belongs to the technical field of thermoplastic polyurethane. The high-transparency and low-shrinkage thermoplastic polyurethane elastomer comprises raw materials in percentage by mass as follows: 48%-70% of polyester diol, 25%-40% of diisocyanate, 3%-13% of a chain extender, 0.1%-0.3% of an antioxidant, 0.1%-0.8% of a light stabilizer and 0.008%-0.03% of a catalyst. The high-transparency and low-shrinkage thermoplastic polyurethane elastomer has lower shrinkage and higher transparency. The invention also provides the simple and easy preparation method.

The invention relates to a rotating disc type automatic voltage reduction device for lithium-manganese button cells. The rotating disc type automatic voltage reduction device comprises a frame, an upper flat plate and a lower flat plate are arranged on the frame, a feeding mechanism, a discharging mechanism and a touch screen are arranged on the upper flat plate, and a speed regulating motor and acam indexer are arranged on the lower flat plate. A cam mechanism is arranged on the upper flat plate and comprises a cam and a rolling wheel, and an output end of the speed regulating motor is connected with the cam. The rotating disc type automatic voltage reduction device has advantages that accuracy in positioning of the lithium-manganese button cells is achieved, automatic feeding and discharging can be realized, and quality stability and uniformity of products subjected to voltage reduction are guaranteed; the rotating disc type automatic voltage reduction device comprises sixteen stations, voltage reduction of sixteen units of cells can be realized in each rotating lap of a rotating disc, production efficiency is remarkably improved and production cost is reduced as compared with those of manual voltage reduction, manual operations are replaced by the rotating disc type automatic voltage reduction device, automation of enterprises is improved, labor intensity of operators is relieved, and labor cost is reduced.

The invention discloses a medical bone nail for orthopedics department and a preparation method thereof. The bone nail comprises a core shaft and carbon fiber reinforced polyether-ether-ketone wrapping the core shaft, the core shaft of the bone nail is made of Ti6Al4V titanium alloy, the core shaft structurally comprises a nut and a screw rod, the screw comprises a rod head part, a rod middle part and a rod tail part, the carbon fiber reinforced polyether-ether-ketone wraps the outer part of the rod middle part, and the diameter of the rod middle part wrapped by the carbon fiber reinforced polyether-ether-ketone is consistent with that of the rod head part; wherein the rod tail part is one end, close to the nut, of the screw rod and is provided with at least four threads, and the rod head part is the other end of the screw rod. The medical bone nail has excellent biological tissue compatibility, not only solves a problem of degeneration of adjacent bones and joints caused by stress shielding after surgery, but also solves problems of chronic vertebral pain caused by bioelectric potential difference and degenerative diseases of adjacent bone segments caused by stress shielding after surgery adopting a traditional orthopedic titanium alloy bone nail.

The invention relates to a coiling machine side guide plate with long service life. The coiling machine side guide plate comprises a side guide plate body and an idler wheel assemblies, wherein the side guide plate body comprises a left side guide plate body and a right side guide plate body; a plurality of idler wheel assemblies are arranged on the inner sides of the side guide plate body; each of the idler wheel assemblies comprises an idler wheel, a rolling bearing, a penetrating cover and a sealing element; the upper ends of the rolling bearings of the idler wheel assemblies are assembledon a fixed chuck plate; the fixed chuck plate is fixed on the side guide plate body through a bolt; and lower ends of the rolling bearings of the idler wheel assemblies are mounted on a guide plate body lower plate. According to the coiling machine side guide plate, the idle wheels can rotate freely, and as the rolling friction coefficient of the idler wheels is small, the generated friction forceis small, scratch to two side faces of a steel strip and burr generation are greatly reduced, and product quality and productions stability are ensured; and in addition, as the friction force is lowered, the abrasion loss is reduced, onetime looming service life of the side guide plate is greatly prolonged, the changing frequency of the side guide plate is reduced, the operating efficiency of a production line is improved and the operating cost is lowered.

The invention discloses a transverse automatic stretching device suitable for a long-thin-wall pipe blank. The transverse automatic stretching device comprises an oil cylinder fixed to a workbench, abase and a guide column arranged between the oil cylinder and the base. The guide column is in sliding connection with a guide plate. The guide plate is connected with a male die and a piston rod of the oil cylinder. A female die is arranged in the base. The left side face of the base is connected with a feeding plate. The feeding plate is provided with a positioning sleeve corresponding to the female die. A feeding mechanism and a material return mechanism are further included. The feeding mechanism comprises a sliding block fixing plate arranged on the feeding plate, a feeding sliding blockcapable of sliding up and down along the sliding block fixing plate, a tension spring and a push plate which is in linkage with the guide plate, wherein the tension spring connects the feeding slidingblock with the sliding block fixing plate and constantly keeps the feeding sliding block with the downward sliding tension. The material return mechanism comprises a material return plate and a material return spring, wherein the material return plate is in sliding fit with the guide column and is located on the right side of the guide plate. According to the transverse automatic stretching device, one stretching action can be finished in each cycle, the middle pause time can be neglected, the production efficiency is high, and potential safety hazards are avoided.

The invention relates to the field of functional foods and medicine materials, in particular to nanometer fungus dietary fibers and use thereof. The nanometer fungus dietary fibers disclosed by the invention are made from raw materials namely edible and medicinal funguses, and the nanometer fungus dietary fibers of which the granules are 200-300nm in particle diameter are made through technological processes of removing impurities, performing soaking in polished glutinous rice vinegar, performing rinsing, performing vacuum drying, performing superfine crushing, performing nanocrystallization crushing, performing sieving, performing freeze drying and the like. Through test, the nanometer fungus dietary fibers disclosed by the invention can significantly increase the implantation rate and the proliferation rate of probiotics; when the nanometer fungus dietary fibers are combined with the probiotics for preparing functional foods or medicines, the addition quantity of active probiotics can be reduced to a great extent, the cost and the price of products can be reduced, and the quality stability and the action effects of the products can be guaranteed.

The invention relates to the field of foods, and discloses a fruit juice milk tea beverage based on high proteins and a preparation method thereof. The invention successfully applies a high protein concept, fruit juice raw materials and an online spray tea extraction technology to the production process of high-protein milk tea beverage products, can meet the requirements of long-term continuous production through special formula compatibility and emulsion stability system construction, can realize the normal mouth feel and stable quality of the product within the shelf life at the same time,and can realize the production process and packaging mode of ultra-clean hot filling with PET bottles.

The invention discloses a glass ceramic board for industrial protection and a preparation method thereof. The preparation method comprises the following steps: 1) preparing raw materials according to requirements of the system CaO-MgO-Al2O3-SiO2 and allowing the raw materials to comprise the basic compound components consisting of, by weight, 50 to 55% of SiO2, 8 to 10% of MgO, 12 to 14% of CaO, 8 to 10% of Al2O3, 3 to 5% of FeO, 2 to 4% of Na2O and K2O, 6 to 8% of CaF2 and 3% of TiO2; 2) uniformly mixing the raw materials and carrying out melting and homogenization so as to obtain glass liquid; 3) subjecting the glass liquid to continuous calendering molding and annealing; 4) directly sending an annealed glass plate to a nucleation and crystallization furnace on line for nucleation and crystallization; and 5) and subjecting a glass ceramic plate having undergone nucleation and crystallization to on-line cutting and cooling to room temperature so as to obtain the glass ceramic board for industrial protection.

An on-line automatic cleaning apparatus of slit extrusion type coating die for lithium battery and a method associated therewith are provided. The cleaning apparatus includes: a die lip, a coating steel roller, and a cleaning mechanism disposed therebetween. The cleaning mechanism includes a cleaning chamber which includes elongated sealing strips and a flow-guiding arc groove. Front and rear ends of the cleaning chamber are connected to an inlet sealing plate and an outlet sealing plate respectively. The flow-guiding arc groove is in contact with and presses upper and lower sloped surfaces of the die lip through the elongated sealing strips to seal and thereby define a closed cleaning tunnel. The inlet and outlet sealing plates are in contact with and press two ends of the closed cleaning tunnel respectively for circumferential sealing. An inlet and an outlet are connected to pipes having solenoid valves installed thereon.