49results about How to "Good strength and stability" patented technology

A mobile chair (10) includes a seat (11), and a tray (12) having a front edge (17) that is shorter than its rear edge (18). A caster assembly (14) is carried by the tray (12) at the front and rear corners of the tray (12). A brace assembly (13) attaches the seat (11) to the tray (12) and includes a tube portion (27) attached to the tray (12) between the caster assemblies (14) at the front corners of the tray (12) and tube portions (34) attached to the tray (12) near the rear corners.

The invention discloses a high-strength aluminum-alloy material. The high-strength aluminum-alloy material contains the chemical elements in percentage by mass: not lower than 1.5% and not higher than 3.0% of Mg, not lower than 0.05% and not higher than 0.2% of Si, not lower than 0.1% and not higher than 0.2% of Mn, not lower than 0.2% and not higher than 0.4% of Fe, higher than 0 and not higher than 0.03% of Cu, higher than 0 and not higher than 0.05% of Ti, either not lower than 0.05% and not higher than 0.15% of Ca or not lower than 0.05% and not higher than 0.15% of Sr and the balance of Al and other unavoidable impurities. The invention further discloses an aluminum-alloy plate manufactured from the aluminum-alloy material. The invention further discloses a manufacturing method of the aluminum-alloy plate, wherein the method comprises the steps of carrying out double-strip casting, carrying out cold rolling, carrying out online solid solution treatment and carrying out online aging pretreatment. The high-strength aluminum-alloy material and the aluminum-alloy plate, disclosed by the invention, have relatively high strength and good natural aging stability. After painting and baking, the yield strength of the high-strength aluminum-alloy material and the aluminum-alloy plate is higher than 300Mpa.

The invention relates to a compound curing agent for dredged silt and a preparation method thereof. The compound curing agent for dredged silt comprises the following components in parts by weight: 20-30 parts of aluminum sulfate cement clinker, 30-40 parts of expandable graphite, 5-10 parts of organobentonite, 3-8 parts of pozzolanic material, 1-3 parts of calcined diatomite, 3-5 parts of enhanced aggregate, 6-12 parts of quicklime, 10-15 parts of sodium hydroxide, 8-10 parts of expansible resin, 5-8 parts of sodium silicate and 5-8 parts of carbon fiber. The curing agent provided by the invention combines the respective advantages of multiple traditional soil stabilizers, and the various effective components are organically combined together according to a proper ratio, thereby giving full play to the characteristics and synergistic action of the components. The curing agent provided by the invention has the advantages of favorable early strength performance, excellent strength stability, favorable water stability and the like, can obviously improve the properties of silt such as high water content, low strength and the like, and converts the waste dredged silt into a reproducible geomaterial for utilization, thereby achieving excellent curing effects and economic effects.

The invention provides a monitoring system for semiconductor processing technology, which consists of: a continuum light source, an intermittent mechanism, an optical circuit controller, an optical alignment device, a spectrometer, a data processing unit and an algorithm unit; the continuum light source enters the semiconductor processing cavity through the intermittent mechanism, the optical circuit controller controls the intermittent mechanism to convert continuous incident light into pulsed light and controls the spectrometer to collect the spectrum signals sent from the semiconductor processing cavity. The data processing unit and the algorithm unit are used for processing the data and confirm end point of the technology; and simultaneously, the invention provides a monitoring method for semiconductor processing technology. In the monitoring system and the method for semiconductor processing technology disclosed by the invention, the interference spectrum signals are not easy to be interfered by the plasma emission spectrum and the fluctuation thereof, thus remarkably improving the signal to noise ratio and the resolution ratio. Additionally, the accurate control to the stability and the service life of the light source is realized by carrying out the real-time monitoring for the intensity and the service life of the light source, thereby greatly improving the accuracy and reliability of the technology monitoring.

The invention provides a porcelain insulator with high cold resistance which comprises 22-30 parts of semi-mountain clay, 15-25 parts of Changfeng mud, 12 to 22 parts of illite; 10-18 parts of bauxite, 10-18 parts of a molecular sieve, 10-18 parts of bentonite, 10-18 parts of zirconium oxide, 10-18 parts of calcium phosphate fiber, 3-15 parts of reinforced fiber, 3-15 parts of boric acid, 1-8 parts of a modified nano titanium dioxide-silica powder additive, 2-8 parts of sepiolite powder, 1-8 parts of a coupling agent, 1-8 parts of a surfactant and 1-8 parts of an anti-freezing agent. The porcelain insulator disclosed by the invention is compounded by adopting various functional raw materials, so that the cold resistance of the porcelain insulator is improved. The invention also provides apreparation method of the porcelain insulator with high cold resistance. The preparation method comprises the following steps: preparing the modified nano titanium dioxide-silica powder additive; mixing, ball-milling and modifying the raw materials in batches; sieving, removing iron, carrying out filter pressing, aging, forming a blank, and drying; glazing and firing; and carrying out glue bindingand maintenance. The porcelain insulator obtained by the method provided by the invention has the characteristics of high mechanical strength and excellent freeze-thaw resistance.

The invention relates to a cement adhesive with low energy consumption and super-early strength for binding of an insulator and a preparation method thereof. The cement adhesive is prepared from the following raw materials of quick-hardening cement, common cement, micro-silicon powder, binding quartz sand, a composite admixture and water, wherein the composite admixture consists of a retarder, a polycarboxylate superplasticizer, an early strength agent, a tackifier and a defoamer according to a ratio. The cement adhesive has the beneficial effects that (1) the production efficiency of the insulator is greatly improved by the compounding of the quick-hardening cement and the common cement; (2) the strength stability, anti-seepage property and durability are excellent; (3) by adopting the proper tackifier, the water sensitivity is decreased, the viscosity of the cement adhesive is adjusted, and the operability of the cement adhesive is obviously improved; (4) the binding time of the adhered insulator is greatly shortened, and the utilization rate of a curing tank is improved; (5) by adopting the three-step mixing method, the ratio of premixture to the quick-hardening cement is properly adjusted, so as to maintain the actual condensing time and operation time of the cement adhesive.

The invention relates the salt-water cement mud. The mud comprises 100 parts G grade cement, 44-50 parts 15-18% salt-water, 1.2-1.8 parts salt resistance dispersing agent, 3-4 parts salt resistance filtration-reducing agent, and 0.1-0.5 parts defoaming agent. The invention also provides the technology, which has low cost and simple operation and meets other mating technology. The cement has advantages of low temperature fast coagulation, good salt resistance, high-early-strength, preference consistency, low filteration loss and good stability.

The invention discloses a recycling method of a concrete waste material and recycled concrete, and belongs to the technical field of concrete preparation. According to the technical key points, the recycling method of the concrete waste material comprises the following steps: S1, humidifying and freezing; S2, pre-crushing; respectively crushing the frozen waste concrete material and the frozen waste ceramic material; S3, grinding and drying; S4, screening and mixing; respectively screening the dried waste concrete material and waste ceramic material, mixing the waste concrete material with theparticle size of more than 4mm with the waste ceramic material to serve as recycled coarse aggregate, and mixing the waste concrete material with the particle size of less than 4mm with the waste ceramic material to serve as recycled fine aggregate; and S5, preparing concrete. According to the scheme, the waste concrete material and the waste ceramic material are used for preparing the concrete so that the waste gas concrete material and the waste ceramic material are recycled, the environmental problem is effectively solved, and natural resources are prevented from being wasted.

An easily erected, collapsible cardboard display for merchandise having a front panel, integral side panels and a rear panel integral with a side panel forming a housing into which a separate support panel is inserted to provide support. Shelves formed from the display's front panel are secured to the support panel and shelves formed from the support panel are secured to a rear panel to provide supported interior shelving. The housing side panels are integrally attached to the front panel and have longitudinal perforated fold lines formed down the middle dividing the side panel into equal sections allowing the display to be collapsed to a flat configuration.

The invention discloses a hole coupling and tuning device for utilizing a sliding piston to conduct tuning. The device comprises a coupling hole 1, a waveguide 2, a coaxial wire-waveguide converter 3 and the sliding piston 4. The coupling hole 1 is formed in one end of the waveguide 2, the sliding piston 4 is arranged at the other end, the sliding piston 4 forms the short circuit face of the waveguide 2, the position of the short circuit face in the waveguide 2 is adjusted by moving the sliding piston 4, the coaxial wire-waveguide converter 3 is arranged on the waveguide wall of the waveguide 2, and the coaxial wire-waveguide converter 3 is located between the coupling hole 1 and the sliding piston 4 at the horizontal position. The coupling size of the hole can be changed through the sliding piston tuning. The tuning device is simple in structure, high in structure consistency and reliability and good in strength stability, solves the problem that the conventional hole coupling is impure in mode and low in reliability, and can be conveniently applied to a resonant cavity requiring accurate adjustment of a coupling coefficient, especially the resonant cavity with more than one coupling coefficient required to be accurately adjusted.

Provided is a car seat sliding rail locking mechanism. The locking mechanism comprises a movable guide rail, a fixed guide rail, a locking mechanism and an unlocking mechanism. The locking mechanism further comprises a locking claw, a fixed bracket, a rotating shaft and a locking spring. The lower end of the lock claw is provided with a plurality of lock gears; the upper end of the lock claw is provided with a control panel; the middle two sides of the lock claw is provided with a pair of first fold ears; a spring hole is installed at the connection part of the control panel and the lock gear; the one side of the fixed bracket is provided with a pair of second fold ears, and the other side of the fixed bracket is provided with a reinforced flanging and the middle of the fixed bracket is provided a hook spring slot; the locking spring is installed between a pair of the first fold ears, wherein a first spring hook at the one end is hooked up to the spring hole, and a second spring hook at the other end is hooked up to the hook spring groove; the middle of the rotating shaft is provided with the locking spring in a clamping mode, and both ends of the rotating shaft are passed through and formed in shaft holes of a pair of first fold ears and a pair of second fold ears; an abdication groove, a square hole and a lock groove are formed in the moving guide rail; a plurality of locking row holes are formed in the edgefold of the fixed guide rail; a wrench hole is formed in the locking mechanism. The sliding rail locking mechanism has the advantages that the locking strength is high; a gear of the locking mechanism is prevented from skipping under impact; the unlocking trip is short; the unlocking force is weak; the processing is convenient; the locking is reliable; the processing accuracy requirement is low and the assembling is convenient.

The invention relates to a preparation method of a catalyst, and in particular relates to a clean type hydrocarbon steam pre-conversion catalyst and a preparation method thereof. The catalyst takes mixed oxide of aluminum oxide and titanium dioxide as carriers, one or more of lanthanum oxide, cerium protoxide and magnesium oxide in any proportion as an accelerant, and nickel oxide as an active component, wherein a precursor of lanthanum oxide, cerium protoxide, magnesium oxide or nickel oxide is a nonnitrogenous salt or compound, preferably corresponding acetate and oxalate. The prepared clean type hydrocarbon steam pre-conversion catalyst has the characteristics of being high in mechanical strength, good in activity, good in strength stability, structure stability, activity stability and the like, all materialization properties can achieve industrial use requirements, no pollutant gas such as nitrogen oxide is emitted in a preparation process, the pollution problem in the production process of the catalyst can be solved, and the cleanness of the gaseous hydrocarbon steam pre-conversion catalyst in the preparation process can be realized.

The invention provides a bainitic steel. The bainitic steel comprises the following components: C 0.1 wt%-0.3 wt%, Mn 1.5 wt%-3.0 wt%, Si 1.0 wt%-2.0 wt%, B 0.003 wt%-0.006 wt%, Ti 0.05 wt%-0.15 wt%, Cr greater than 0 and less than or equal to 1.0 wt%, RE greater than 0 and less than or equal to 0.03 wt%, S 0-0.01 wt%, P 0-0.01 wt% and the balance of Fe. The invention also provides a preparation method of the bainitic steel. As the bainitic steel provided by the invention is added with alloy elements, such as the Mn, the Si, the Cr and the B, and a heat treatment process is adjusted, intensity stability of the bainitic steel is improved, and service life of the bainitic steel under a frictional and abrasive working condition is prolonged.

The invention relates to pouring slurry for a light board. The pouring slurry is prepared from the following raw materials in parts by weight: 60-120 parts of cement, 70-120 parts of light materials, 2-6 parts of emulsion powder, 5-25 parts of coal ash, 30-50 parts of gypsum powder, 10-25 parts of triangular pyramid cage type glass fiber reinforced plastic particles, 0.05-3.5 parts of sodium carboxymethylcellulose, 0.8-3.0 parts of lignocelluloses, 0.6-2.0 parts of carbon fiber, 0.1-0.5 part of cellulose ether, 2.7-7.8 parts of beta-cyclodextrin, 0.01-10 parts of an early strength agent, 0.1-5 parts of a water reducer and 0.05-4 parts of an air entraining agent. The pouring slurry has the characteristics of light weight, high strength, heat resistance and shock resistance.

The invention relates to a light weight porous melamine resin type border-crossing capturing material and a preparation method thereof. The preparation method comprises the following steps: (1) evenly mixing crystal water mineral powder, melamine-formaldehyde resin, a surfactant, and a curing agent according to a certain ratio to form stable slurry; (2) heating the slurry prepared in the step (1) to a temperature of 70 to 85 DEG C, rapidly adding a foaming agent, and carrying out curing reactions to form a light weight porous material; (3) drying the light weight porous material obtained in the step (2); (4) cutting the light weight porous material obtained in the step (3) according to the size requirements through hot cutting. The prepared capturing material has a good anti-freezing performance and overcomes the shortage of easily flammable property of common spraying organic substances.

The invention discloses a novel anti-pullout pedicle screw based on the additive manufacturing technology, which is high in strength and capable of promoting osseointegration. The pedicle screw is composed of a solid nail lower end with a thread, a nail upper end with a peripheral tensile expansion structure and an internal solid cylinder, and a nail base connected with the peripheral tensile expansion structure, as is shown in Figure 1. With the tensile expansion performance of the tensile expansion structure, the pedicle screw expands when tensioned, and thus the stability of the pedicle screw and the vertebral body is improved; meanwhile, the tensile expansion structure part is of a porous structure, and osteocytes can grow into the porous structure easily to promote osseointegration and accelerate integration of the pedicle screw and the vertebral body; besides, unique structural design is adopted to overcome the defect of low strength of the tensile expansion structure, so that the mechanical strength of the pedicle screw is ensured and the internal fixation effect is improved while the anti-pullout performance of the pedicle screw is achieved. The pedicle screw can be easilyapplied to design of orthopedic medical instruments.

The invention provides inorganic slurry for a thermosetting compound polystyrene board. The inorganic slurry is prepared from the following components in parts by weight: 80-100 parts of silicate cement, 0.1-10 part of enhancer, 0-10 parts of a suspending agent, 0-3 parts of a thickening agent, 0-5 parts of interface adhesive, 0-3 parts of water reducer, 0-1 part of surfactant, 0-2 part of retarder and 50-70 parts of water, wherein the enhancer is prepared from one or more of high-alumina cement, calcium sulphoaluminate and calcium formate. The invention further provides a preparation method of the inorganic slurry. The board produced from the inorganic slurry has a heat conductivity coefficient controlled to be 0.050 or less, is A-class non-combustible, has high strength and good integration with a substrate wall, does not have potential safety hazard, is relatively low in cost, and is easy to popularize and apply.

A protective cover for an air conditioner outdoor unit on an outer wall comprises a plurality of connected square protective frames. The protective cover is characterized in that an upper limit part and a lower limit part are arranged on the upper border and the lower border of each protective cover correspondingly, an opening sash is movably clamped in each protective frame, and the top and the bottom of each opening sash are movably clamped in the corresponding upper limit part and the corresponding lower limit part correspondingly; the bottom of each opening sash abuts against the corresponding lower border, and a gap is formed between the top of each opening sash and the corresponding upper border so that the opening sash can be lifted upwards to be moved out of the corresponding protective frame. The protective cover for the air conditioner outdoor unit on the outer wall is reasonable in structure design, good in stability, low in production cost, simple in production process and convenient to use when an air conditioner is mounted, and the problems in the prior art are solved.

The invention relates to the technical field of an adsorption material, and aims at providing preparation and application of a kapok fiber-based elastic foam material. The preparation comprises the following steps of taking kapok fiber; putting the kapok fiber into a reaction kettle; adding a glutaraldehyde solution so that the kapok fiber solution is completely soaked and is continuously soaked; raising the temperature to perform a hydrothermal carbonation reaction; after the reaction is completed, performing natural cooling to obtain blocky brown elastic materials; performing soaking and rinsing firstly by deionized water and then using absolute ethyl alcohol until the final soaking liquid is colorless and transparent; after the natural drying, obtaining the kapok fiber-based elastic foam material. The preparation has the advantages that the raw material sources are rich; the price is low; the defects of a conventional method for preparing carbon-based materials can be overcome. Compared with a high-temperature carbonization treatment process, the preparation has the characteristics of simple preparation process, low production cost and the like. The prepared elastic hollow foams with hydrophilic and oleophilic characteristics have good hydrophilic performance on the basis of maintaining the original oleophilic performance; the obvious adsorption effect can be achieved on various kinds of dye in oil, organic solvents and water solution; the repeated utilization rate is high.

The invention discloses an aluminum alloy material for casting. The aluminum alloy material comprises the following compositions in percentage by mass: 7.2 percent to 7.8 percent of Si, less than or equal to 0.45 percent of Fe, 3.1 percent to 3.6 percent of Cu, 0.2 percent to 0.5 percent of Mn, 0.25 percent to 0.4 percent of Mg, 0.2 percent to 0.3 percent of Zn, less than or equal to 0.04 percent of Cr, 0.1 percent to 0.25 percent of Ni, 0.12 percent to 0.2 percent of Ti, 0.004 percent to 0.01 percent of Sr, less than or equal to 0.1 percent of Pb, and the balance of Al and inevitable impurities. By adopting the aluminum alloy material for casting disclosed by the invention, the problems of poor comprehensive mechanical properties and high formula costs of casting aluminum alloys in the prior art can be reasonably solved.

The invention discloses a portable universal life support system for field emergency treatment. The portable universal life support system comprises a life support system host which is quickly positioned on a stretcher through a stretcher fixing device, wherein the life support system host comprises a host shell and an infusion device; a host main bracket is fixedly arranged inside the host shell; a mechanical ventilation module and a breathing module are positioned inside the host main bracket; the mechanical ventilation module is used for providing mixed oxygen for a patient and can avoid the situation that gas exhaled by the patient cannot be discharged; the breathing module is communicated with the mechanical ventilation module, is used for performing breathing treatment on the patient and can ensure that the patient inhales autonomously; a power supply module for supplying power to the whole device is arranged inside the host main bracket; and a system control module is arranged above the host main bracket. According to the portable universal life support system disclosed by the invention, infusion treatment and breathing treatment on the patient can be realized, the patient can be continuously and normally subjected to breathing treatment, and normal breathing of the patient is not influenced even if the device fails.

The invention discloses a smart atomization water supplementing system suitable for a CRTS 3 type pre-tensioned track board. The system comprises a master control cabinet, a control valve, an ultrasonic atomizer, an atomization controller, a heating water tank, a filter, a water inlet valve, a temperature sensor and a humidity sensor, wherein the master control cabinet is used for analyzing data obtained by measurement of the temperature sensor and the humidity sensor, and commanding the atomization controller; the atomization controller is used for further controlling the heating water tank and the control valve; a water inlet of the heating water tank is connected with a tap water pipe by the water inlet valve, and a water outlet of the heating water tank is connected with the control valve; the control valve is connected with one end of the filter by a water pipe, and the other end of the filter is connected with the ultrasonic atomizer; the ultrasonic atomizer is used for transforming water into water mist by means of vibration, and introducing the water mist into a pedestal of the track board through a mist guide pipeline. After the smart atomization water supplementing system is adopted, the maintenance time is effectively shortened; after the track board is supplemented with water, a track board body is good in strength stability; therefore, the production efficiency is greatly improved.

The invention researches a photonic crystal molecularly imprinted hydrogel sensor based on a water phase as well as a preparation method and a detection method of the photonic crystal molecularly imprinted hydrogel sensor, and belongs to the field of molecularly imprinted sensing. According to the invention, Lysozyme (Lyz) is selected as a research object, a molecular imprinting technology is combined with photonic crystals, and the photonic crystal molecularly imprinted hydrogel sensor is prepared in a water phase in a simple mode through a novel imprinting method and a novel imprinting system. The preparation method comprises the steps of preparing monodisperse silicon dioxide microspheres by adopting an improved method, then preparing a photonic crystal template by adopting a vertical self-assembly method, polymerizing a polymerization solution on the surface of the template to form a film, removing the photonic crystal template by using hydrofluoric acid, and finally obtaining the photonic crystal molecularly imprinted hydrogel sensor with the inverse opal structure by using the template. The hydrogel sensor has good selectivity and sensitivity, and can be successfully used for detecting lysozyme in an actual sample.

A milling tool for milling and / or drilling workpieces, which is rotatable in a direction of rotation about an axis of rotation during machining, comprising a milling head, which has a radius cutter that describes a portion in the form of a circular arc such that the milling head takes up a partially spherical, in particular a hemispherical volume, in rotation, a main body, which has a main feature in the form of a helical recess with respect to the rotation volume taken up by the rotating milling tool in order to form a conveying helix, wherein the main feature is provided with a cutting edge as main cutter, wherein the main feature has a smooth lateral surface arranged on the side facing away from the main cutter in the direction of rotation.

The invention discloses a technology for processing base paper of wallpaper. The technology disclosed by the invention comprises the following steps: (1), sending base paper, namely arranging a roller which the base paper winds on the conveying end of conveying equipment, and brushing the printing surface of the base paper conveyed onto a coating and plasticizing combination machine through a transmission roller wheel with a foaming paste coating; (2), heating, namely conveying the base paper brushed with the foaming paste coating into an oven through the transmission roller wheel, wherein the oven is divided into five sections which are at 160 DEG C, 180 DEG C, 190 DEG C, 200 DEG C and 185 DEG C in sequence along the base paper conveying direction; (3), pricking the coating, namely conveying the heated base paper onto a pricking machine through the transmission roller wheel, wherein a pricking needle template of the pricking machine is arranged along the width direction of the base paper and pricking needles are used for pricking the foaming paste coating with fixed beats; and (4), cooling, namely conveying the pricked base paper through the transmission roller wheel to pass through five cooling wheels, and finally, rolling the cooled base paper through a rolling machine. The base paper processed by the technology disclosed by the invention is excellent in air permeability and antibacterial property.

The invention discloses a manufacturing method of a light filled core mold. The method comprises covering fiber gridding cloth on the surface of a core mold made of foaming materials; spraying mortar on at least one surface of the core mold for solidification forming; packing the core mold with heat shrink film and performing heating until the heat shrink film tightly packs the core mold. According to the manufacturing method of the light filled core mold, the core mold can be provided with higher strength and higher stability, the manufacturing speed is high, the production cost is low and mass or bath production applicable to the market can be obtained. The invention also provides a light filled core mold structure.

The invention discloses a high-strength heat-resistant magnesium alloy and belongs to the technical field of magnesium alloy materials. The high-strength heat-resistant magnesium alloy comprises the following components in percentage by mass: 5.5-6.2% of Y, 0.5-0.7% of Ce, 0.4-0.6% of Zr, 0.2-0.5% of Sb and the balance of Mg and inevitable impurities. The magnesium alloy is prepared by taking pure Mg and Sb as well as intermediate alloys of Mg-25%Y, Mg-25%Ce and Mg-25%Zr as raw materials, smelting and casting to obtain magnesium alloy ingots at first, then performing solid-solution treatment on the magnesium alloy ingots sequentially for 8 hours at 525 DEG C, and performing aging treatment for 16 hours at 225 DEG C. The magnesium alloy disclosed by the invention has relatively high room-temperature and high-temperature strength, and has relatively good strength stability at 200-300 DEG C.