278results about How to "Short service life" patented technology

A chromium stainless steel pickling agent consists of hydrochloric acid 30-80% with concentration 30%, fluohydric acid 17.2-69.7% with concentration 50-55%, hexamethine tetramine or Rhodin or LK corrosion inhibitor 0.3-3.8%. It can remove oxide skin directly, simplify process, and have excellent protection performance for chromium stainless steel surface. The surface is clean and smooth, and it can be used for heat-treatment chromium stainless steel wire stocks, rods, sections, pipe materials, silks and mechanical work pieces.

The invention relates to a self-weight thermal forming process for a titanium alloy thin-wall cylindrical part, which is characterized in that under the action of self-weight of a thermal forming clamp, a pressure instead of a dynamic force is generated on the titanium alloy thin-wall cylindrical part; and the thermal forming of the titanium alloy thin-wall cylindrical part is completed in a vacuum furnace. The used clamp of the invention has a simple structure, a low manufacturing cost and a short development and application period. The whole process is a novel idea and provides a new approach to the forming of the thin-wall titanium alloy cylindrical parts. The process is significant in technical innovation and economic benefit, and can be widely applied in related technical fields.

The invention relates to a key exchange method for automobile electronic control unit communication, which comprises the following steps that 1, an encryption object is selected, and a plurality of electronic control units are classified into a Master and a Slave; 2, a system is initialized, the Slave is accessed to the Master, and the Master checks whether a key parameter needs to be generated ornot; if so, a key parameter is generated, and simultaneously the key parameter is stored into safe storage areas of the Master and the Slave; if not, the originally generated key parameters are used;3, a secret key is generated in real time, after the vehicle is ignited each time, the Master and the Slave respectively generate a random number, and the secret key is generated according to secretkey parameters and the random numbers; and step 4, data encryption: the Master encrypts the communication data needing to be sent to the Slave through the secret key, and the Slave encrypts the communication data needing to be sent to the Master through the secret key. The secret key exchange method for automobile electronic control unit communication is low in encryption cost, does not need to establish a special server to store the secret key, is low in secret key leakage risk, and has very high safety.

A process for treating water by catalytic ozonizing method includes such steps as pre-treating the water to be treated, catalytic ozonizing by using the carbon nanotubes as catalyst instead of activated carbon, and post-treating. It can oxidize the organic pollutants to become CO2 and H2O.

A loom driver is composed of beating up motor and mechanism, opening motor and mechanism, speed variators, back beam oscillating mechanism, selvedge binder mechanism, and controller. Its advantages are simple structure, and no need of expensive electromagnetic brake and clutch.

The invention discloses formaldehyde adsorption paint. The formaldehyde adsorption paint comprises the following components by mass part: 5-20 parts of a purslane extract, 1-10 parts of lauric acid, 2-10 parts of tannic acid, 1-3 parts of hyaluronic acid, 3-10 parts of kaolin, 10-20 parts of titanium dioxide, 5-15 parts of olive oil, 10-35 parts of Vaseline, 5-15 parts of stannous octoate, 5-15 parts of active carbon, 0.2 parts of hydroxypropyl methyl cellulose and 0.2 parts of methyl cellulose. The invention also discloses a preparation method of the formaldehyde adsorption paint. The formaldehyde adsorption paint has the advantages of short usage period, economy and utility, and good effect, and can avoid formaldehyde volatilization while being coated on walls. The formaldehyde adsorption paint has unique superpower adsorption capability, can thoroughly absorb formaldehyde in wall in 5 days, and thereby formaldehyde can be effectively removed, and skin damage can be avoided.

The invention belongs to the technical field of animal physiology and health index information detection, and discloses an Internet-based cow multi-function physical sign early warning system and an early warning method. The early warning system includes a physical sign measuring unit that measures temperature data through a wireless thermometer and transmits the measured data to a signal relay transmission part via an MCU and a wireless transmitter, pedometer data being transmitted every 24 hours; a signal relay output part in which a wireless signal transmitting and receiving base station stores ear temperature measuring unit data to a cloud server or a client server via the Internet; and a client part that shows the temperature change in a visualized curve, displays a real-time temperature curve, sets upper and lower limits, and automatically turns on an alarm when the limits are exceeded. The continuous power supply of the invention solves the problem of energy consumption, and canbe used continuously throughout the breeding cycle of the animal; the body temperature signals are combined with the pedometer data to achieve the infinite transmission of cow physical signs; and theremote transmission and sharing of data are achieved by the cloud platform.

The invention relates to a resource recycling method for N-methylmorpholine oxide in a lyocell fiber production process, and belongs to the field of lyocell fiber. The method comprises the following steps: 1) filtering and recycling N-methylmorpholine oxide for producing lyocell fiber through a recycling system to be ready for use; 2) performing decolorization and ion removal on the N-methylmorpholine oxide in step 1) by an anion-cation exchanger; the brand numbers of ion exchange membranes being A500, LX-70B, DOC2001, and C150; 3) allowing the N-methylmorpholine oxide in step 2) to be concentrated in an evaporation system, thereby achieving the recycling of N-methylmorpholine oxide. Meanwhile, in the resource regeneration method of ion exchange resin provided by the present invention, thevariation characteristics of the concentrations of a cleaning liquid and a regeneration liquid in the regeneration process are fully considered, and the cleaning liquid and the recycling liquid are fully recycled as resources, thereby effectively reducing the regeneration cost of the ion exchange resin.

The invention discloses a bridge water surface pile tie beam hoisting device and a construction method thereof.The bridge water surface pile tie beam hoisting device comprises a hoisting point support, a bearing mechanism and a pile tie beam wood formwork, a hoisting component is arranged between the hoisting point support and the bearing mechanism, and the bearing mechanism comprises a plurality of lower longitudinal beams and bearing beams arranged on the lower longitudinal beams; the pile tie beam wood formwork comprises square timbers and bamboo plywood. The hoisting component comprises a hoisting rod, an upper adjusting nut arranged on the hoisting rod in a sleeving mode and a lower locking nut arranged on the hoisting rod in a sleeving mode. The method comprises the following steps: 1, preparing before construction; 2, mounting a hoisting device; 3, hoisting the bearing beam for the first time; 4, mounting a timber formwork of the pile tie beam; 5, binding a pier pile foundation reinforcement cage and a pile tie beam reinforcement cage; 6, conducting secondary hoisting of the bearing beam and the pile tie beam wood formwork; and 7, installing a pier pile foundation steel formwork and a pile tie beam side steel formwork, and pouring concrete. The construction method is reasonable in design, hoisting of the pile tie beam construction formwork is achieved, and then concrete pouring construction of the pile tie beam is completed.

The invention discloses a weather-resistant water-based adhesive and a preparation method thereof. The weather-resistant water-based adhesive is prepared from deionized water, sodium acetate, disodium hydrogen phosphate dodecahydrate, a protective colloid, tartaric acid, a crosslinking agent, vinyl acetate, crosslinking monomer, oxydol, a mold preventive, a defoaming agent and a film-forming assistant. The preparation method comprises the following steps: adding the sodium acetate, disodium hydrogen phosphate dodecahydrate, protective colloid and defoaming agent into the deionized water to obtain a protective colloid solution; adding part of the vinyl acetate and crosslinking monomer into the protective colloid solution, adding all the crosslinking agent solution, and adding part of the oxydol and tartaric acid to obtain a seed emulsion; and dropwisely adding part of the vinyl acetate and oxydol into the seed emulsion, adding the rest of tartaric acid, dropwisely adding the rest of vinyl acetate and oxydol, carrying out curing reaction, adding the film-forming assistant, and adding the mold preventive to obtain the weather-resistant water-based adhesive. The weather-resistant water-based adhesive has the advantages of high bonding strength, excellent heat resistance and excellent water resistance, is convenient to use, enhances the work efficiency and lowers the cost.

The invention discloses a facial mask for whitening skin and removing freckles and psoriasis in four days. The facial mask is prepared from the following components in parts by weight: 5-20 parts of water, 1-10 parts of lauric acid, 2-10 parts of tannic acid, 1-3 parts of hyaluronic acid, 3-10 parts of kaolin, 10-20 parts of titanium dioxide, 5-15 parts of olive oil, 10-35 parts of vaseline, 5-15 parts of fruit oil, 5-15 parts of skin-whitening and freckle-removing additives, 0.2 parts of pigments, and 0.2 parts of spices. The invention furthermore discloses a preparation method of the facial mask for whitening the skin and removing the freckles and the psoriasis in the four days. The skin-whitening and freckle-removing facial mask provided by the invention is short in usage period, is economic and practical, is good in effect, and can assist in rapid metabolism of keratinocytes of skin aging and quickly facilitate growth. The facial mask has a unique ultra-strong adsorption capability, and can radically adsorb pigments and cutin wastes stacked in a bottom layer of the skin in five days, so that chloasma, pimples, acnes, freckles, psoriasis and the like are effectively removed; and after use, dead skin residues, cutin grease, pigment wastes and the like of a surface layer of the skin can be removed completely, and no adverse reactions are caused.

The present invention provides a controller for a magnetic wheel, which is added with an alternated adjusting seat within the external rotary disk of the magnetic wheel controller. A flexible locker of alternated adjusting seat can be flexibly locked into second latch groove of external rotary disk. When a cam shaft of a tester has not reached a signal locating point, but the cable of magnetic component has been fixed during initial assembly of the magnetic wheel and controller, the flexible lock is flexibly locked with a second latch groove, such that the external rotary disk and alternated adjusting seat will continue to rotate until the tester senses the locating signal. Thus, no manual adjustment of cable is required in order to shorten assembly time and improve manufacturing efficiency for a higher practicability.

The invention discloses a roller sleeve of a roller press and a preparation method of the roller sleeve, and belongs to the technical field of roller press machines. The roller sleeve comprises an outer working layer, an inner core part and a transition layer located between the working layer and the core part. The working layer is made of high-speed steel, the transition layer is made of semisteel, and the core part is made of medium-carbon alloy steel. According to the roller sleeve, the working layer of the roller sleeve of the roller press is high in hardness and high in wear resistance, and the phenomenon of cracking and cracking after being used on a machine is avoided; the strength of the core part is high, and the toughness is high, the service life of the roller sleeve is long, and all parts of the roller sleeve are tightly combined; and in addition, the preparation method has the advantages of being high in material utilization rate and low in comprehensive cost.

The invention relates to a double-suspension device and unit used for carrying a child. The double-suspension device and unit comprises a vehicle frame, wheels mounted on the vehicle frame and a sitting and lying device used for sitting and laying of the child and is further provided with a seat stool which is hinged to the vehicle frame through a hinged seat stool connecting rod. The two sides of the sitting and lying device are separately hinged to the vehicle frame through two sets of connecting rod assemblies. The vehicle frame comprises a first vehicle frame body and a second vehicle frame body hinged to the first vehicle frame body. The sitting and lying device is formed by sequentially hinging one end of a first seat bracket, a seat left inner connecting rod, a seat left outer connecting rod and one end of a second seat bracket through a first seat shaft, a second seat shaft, a third seat shaft and a fourth seat shaft and sequentially hinging the other end of the first seat bracket, a seat right inner connecting rod, a seat right outer connecting rod and the other end of the second seat bracket through a fifth seat shaft, a sixth seat shaft, a seventh seat shaft and an eighth seat shaft. The first seat bracket and the second seat bracket can rotate by 0-360 degrees relative to the seat left inner connecting rod, the seat left outer connecting rod, the seat right inner connecting rod and the seating right outer connecting rod.

The invention belongs to the technical field of solar energy photo-thermal utilization, and particularly relates to an antioxidation graphite sealing ring. The sealing ring is characterized by being prepared from, by mass, 5-15 parts of silica powder, 5-15 parts of boron carbide, 65-70 parts of pitch, 5-15 parts of graphite and 1-5 parts of tetrahydrofuran. After graphite, silica powder, boron carbide and pitch are mixed, tetrahydrofuran is used as a dispersing agent, the mixture is subjected to ball milling and dispersed and then is added into a mold, pressed and roasted to form a pipe shape, high-pressure dipping and pressurized roasted molding are carried out, and the mold pipe is cut into a ring after molding is finished, polished and ground. The product has the advantages of being high in antioxidation, high in strength, resistant to abrasion and thermal expansion and good in sealing performance.

polymeric ion-conducting membrane with an enhanced stability against attacks of free radicals for exteding its service time, which comprises (a) a polymer matrix, and (b) a redox stabilizer, where the redox stabilizer is attached to the polymer matrix by chemical or ligand bonding, or the redox stabilizer is physically mixed with the polymer matrix.

The present invention provides an eddy current sensor, comprising: a housing; a plurality of probes which are all disposed inside the housing, probing ends of the probes being all disposed at inner side of an exterior surface of the housing to avoid the probing ends of the probes from protruding out of the exterior surface of the housing. Because the probing ends of the plurality of probes are all located at the inner side of the exterior surface of the housing, the housing will protect the probes when the eddy current sensor is hit by an external force, thereby avoiding damage of the probes due to the impact, which reduces fault rate of the probes, enhances use reliability of the eddy current sensor, and prolongs service life of the eddy current sensor.

The invention relates to a chemical cleaning method for a reverse osmosis membrane. The chemical cleaning method comprises the following steps: S100, preparing a reverse osmosis cleaning agent, a sterilizing agent, an acidic cleaning agent and an alkaline cleaning agent; S200, preparing an acid washing reagent by using the acidic cleaning agent, the sterilizing agent and a hydrochloric acid solution, and preparing an alkali washing reagent by using the alkaline cleaning agent, the reverse osmosis cleaning agent and a sodium hydroxide solution; S300, carrying out acid washing, wherein the reverse osmosis membrane assemblies of all production sections are cleaned in series by using the acid washing reagent, and the reverse osmosis membrane assemblies of all production sections are treated in cooperation with ultrasonic oscillation; S400, carrying out replacement cleaning, wherein the reverse osmosis membrane assemblies of all the production sections are cleaned in series by using reverse osmosis inlet water until the pH value of the outlet water is neutral, and the reverse osmosis membrane assemblies of all the production sections are treated in cooperation with ultrasonic oscillation; S500, carrying out alkali washing, wherein the reverse osmosis membrane assembliesof all production sections are cleaned by using the alkali washing reagent, and the reverse osmosis membrane assemblies of all production sections are treated in cooperation with ultrasonic oscillation; and repeating the replacement cleaning step in the step S400 until the pH value of the effluent is neutral.

The invention provides a method for preventing and treating ichthyophthiriasis of freshwater fish. The method comprises specific steps as follows: high-alcohol baijiu with the alcohol strength of 60 V/V or above is firstly used for uniform splashing; after 3-4 h, a protozoon killer is uniformly sprayed to water and used once every other day; after the protozoon killer is continuously used 2-3 times, finally, florfenicol is used for uniform splashing. By means of the method, ichthyophthirius multifiliis can be effectively stripped from body surfaces and gills of fish and thus can be more efficiently and thoroughly killed, and the survival rate of the fish is increased; meanwhile, the method is applicable to almost all freshwater fish, is wide in applicable range, convenient to use, short inuse cycle and remarkable in pesticide effect, meets the aquaculture demands of the freshwater fish at present and has very great promotion value and huge market potentials.