Prepetition method of protective powder coating

The invention relates to a protective powder coating. The protective powder coating comprises 10 parts of hexafluorobutyl methacrylate, 20 parts of hexafluorobutyl methacrylate modified epoxy resin, 20 parts of polyester resin, 2 pars of curing agent, 2 parts of nano sodium-montmorillonite, 1 part of flatting agent, 3 parts of rutile titanium dioxide, 2 parts of wetting accelerant, 15 parts of Cu/Ni/Ti/Sn/Si alloy powder and 10 parts of pigment. The protective powder coating has excellent hydrophobicity and oleophobicity, good wear resistance and good corrosion resistance.

Power sampler for soil

The invention discloses a power sampler for soil. The power sampler comprises a gasoline engine, a rotary supporting rod, a connection rod and a drilling head, wherein a lower end column of a gear box of the gasoline engine is connected with the upper end of the connection rod through an engine rod connection sleeve head; the rotary supporting rod is arranged at the top of the connection rod; the drilling head is arranged at the bottom of the connection rod. The power sampler is simple in structure, convenient and reliable to use and high in practicability, can be suitable for sampling of different types of soil, is convenient and quick, and can be used for obtaining soil at different depths according to a requirement and also used for taking undisturbed soil and frozen soil; as for the undisturbed soil, the sampler does not damage and interfere soil samples, so that the representativeness of the test soil samples in a scientific research test is improved; as for the frozen soil, the sampler ...

High-resistance throwing object pneumatic membrane resistance-reducing and lift-increasing structure

The invention provides a high-resistance throwing object pneumatic membrane resistance reducing and lift increasing structure which comprises a bullet head air bag module and a bullet body air bag module. The inflatable membrane drag reduction and lift augmentation structure has the advantages of being light in weight, small in folding size, low in use cost, reusable, rapid to unfold and the like, an inflatable membrane drag reduction thought is adopted, the static stable state of the high-resistance throwing object is changed into the static unstable state by locally optimizing the appearance of the high-resistance throwing object, the resistance of the high-resistance throwing object during flight in the air is reduced, and the flying speed of the high-resistance throwing object is increased. Under the condition that the overall gravity center position is not changed, the position of the pneumatic center is changed to change the poor maneuverability of the high-resistance throwing object ...

Floating-assisting and resistance-reducing inflatable membrane material for vehicle and manufacturing method thereof

The invention provides a floating-assisting and resistance-reducing inflatable membrane material for a vehicle and a manufacturing method thereof, the inflatable membrane material adopts a three-layer composite structure, and consists of an outer wear-resistant layer, a middle reinforcing layer and an inner contact layer; wherein the outer anti-abrasion layer is made of butadiene rubber, the middle reinforcing layer is formed by stranding, weaving and winding high-strength carbon fibers, the inner contact layer is made of nitrile rubber, and the middle reinforcing layer is bonded with the outer anti-abrasion layer and the inner contact layer through epoxy resin. The inflatable membrane material is prepared by adopting a soft core method. According to the method, the bursting strength of the membrane material can be greatly improved, and the technical problem that under the high-speed and high-sea condition, the wave slapping load is close to the inflation pressure of the inflatable membrane ...

Internet-of-things credibility evaluation method based on extended activity sequence diagram model tests

The invention discloses an internet-of-things credibility evaluation method based on extended activity sequence diagram model tests, and belongs to the technical field of the internet of things. According to the method, a probability time activity sequence diagram is adopted to intuitively and quantitatively describe operations of the internet of things, the activity sequence diagram is adopted to limit operating scenes of the internet of things, the method of model detection is adopted, and internet-of-things credibility evaluation is implemented. The method is high in automation level, requirements on calculating space are low, the process is clear, and operability and reusability are high. By the aid of the method, theoretical awareness level and actual detecting technology level in the design and operation of the internet of things are raised in the industry, and the method plays an important promoting role in increasing the speed of healthy and sustainable development of the internet ...

Non-lethal low-penetration warhead and preparation method thereof

The invention relates to the technical field of ammunition engineering, in particular to a non-lethal low-penetration bullet and a preparation method thereof.The non-lethal low-penetration bullet comprises a powder compact bullet core, and the powder compact bullet core is prepared through a powder pressing method; the powder compact bomb core is made of metal powder and irritants. And the stimulant is granular or powdery. According to the powder compact bomb core, good designability and mechanical strength of the metal powder are mainly utilized, only mechanical bonding instead of metallurgical bonding is formed between the metal powder and between the metal powder and a stimulant in the powder compacting process, and therefore the powder compact bomb core has the advantages that the powder compact bomb core is simple in structure and low in cost. And the processed powder compact bullet core has relatively low mechanical strength and good redesignability. When the low-penetration bullet ...

Preparation method for powder coating

The invention relates to a powder coating which comprises 20 parts of hexafluorobutyl methacrylate, 30 parts of hexafluorobutyl methacrylate modified epoxy resin, two parts of curing agents, two parts of sodium nano-calcium montmorillonite, one part of a flatting agent, three parts of rutile-type titanium dioxide, two parts of wetting accelerants, 15 parts of Cu/Ni/Ti/Sn/Sn/Si alloyed powder and 10 parts of pigment. The powder coating has excellent hydrophobic and oleophobic performance and good abrasive resistance and corrosion resistance.

Three-cam feeding device

The invention discloses a three-cam feeding device. According to the three-cam feeding device, when quantitative filling needs to be achieved, external fed materials enter the quantitative groove, the quantitative groove has the fixed size, the transverse cam drives the quantitative groove to do linear motion, and therefore the materials are discharged through the quantitative groove to form quantitative feeding. After quantitative feeding enters the discharging nozzle, firstly, the lower cam drives the discharging nozzle to move to a designated discharging position, then the pressing plate is driven by the upper cam to push materials, the feeding in the discharging nozzle is discharged to the designated discharging position, and therefore quantitative filling of the materials is finally achieved.

Deep foundation pit water stop system and construction method

The invention relates to the field of building construction, in particular to a deep foundation pit water stop system and a construction method. The deep foundation pit water stopping system comprises a foundation pit, a retaining wall layer, an underground diaphragm wall, a water retaining curtain and a construction road, the retaining wall layer is arranged in the circumferential direction of the foundation pit and comprises an inner retaining wall layer and an outer retaining wall layer which are coaxially arranged, the inner diameter of the inner retaining wall layer is equal to the diameter of the foundation pit, and the diameter of the outer retaining wall layer is larger than that of the inner retaining wall layer; the underground diaphragm wall is arranged between the inner protection wall layer and the outer protection wall layer; the water retaining curtain is arranged on the circle, away from the foundation pit, of the underground diaphragm wall in the circumferential direction ...

Adjustable interval type weeding and topdressing machine

The invention discloses an adjustable interval type weeding and topdressing machine, and relates to the field of farm machinery. The adjustable interval type weeding and topdressing machine comprises a fertilization box, fertilizer discharge pipes, weed removing shovel interval adjustment devices, weed removing shovels, driving wheels, chains, driving wheel height adjustment devices and a rack. The fertilization box is arranged above the rack, the fertilizer discharge pipes are arranged at the bottom of the fertilization box, the four weed removing shovel interval adjustment devices are arranged on a beam of the outer side of the rack, the weed removing shovels are connected with the bottoms of the weed removing shovel interval adjustment devices, the chains are arranged on the outer sides of both ends of the rack, the chains are matched with transmission gears, the driving gears are connected with the driving wheels through driving shafts, and the driving gears are connected with the driving ...

Request multi-replica task execution method applicable to online data intensive applications

The invention discloses a request multi-replica task execution method applicable to online data intensive applications and aims to solve the technical problem how to reduce extra resources occupied by multi-replica execution in guarantee of service quality of the online data intensive applications. The method includes steps: setting initial quantity and reference quality required by a task execution system, recording each time characteristic of each replica, judging time delay and checking and updating rear-end slave node state reference quantity. The method has the advantages that by adoption of sliding windows for extracting replica characteristics and performance predication of rear-end slave nodes, multi-replica proportions of tasks are adjusted dynamically to enable the online data intensive applications to effectively adapt to dynamic fluctuations of load levels, and accordingly utilization efficiency of system resources of the online data intensive applications is improved.

Production process of flyash haydite

The present invention relates to the production process of flyash haydite. The material includes flyash 85-95 wt%, clay 5-8 wt%, flue dust 0-5 wt% and water glass 1-3 wt%. The production process includes mixing mixing the first mentioned three kinds of material and loading the mixture into pelletizing plate, compounding water solution of water glass of 0.01-0.02% concentration, spraying the solution to the mixture, rolling the mixture to form pellets, sieving to eliminate powder of 0.8 mm below size, roasting in a kiln at 1300-1500 deg.c for 1-2 hr, cooling to 600-700 deg.c, taking out of thekiln for cooling naturally, and crushing to haydite product of 3-20 mm size.

Production process of fly ash haydite

High-temperature and high-pressure dynamic detection platform for mechanical seal of corrugated pipe

The invention provides a corrugated pipe mechanical seal high-temperature and high-pressure dynamic detection table, which comprises a mechanical seal detection unit and a hot oil supply unit, and is characterized in that a mechanical seal packaging box in the mechanical seal detection unit is arranged on the driving side of a bearing box and is used for packaging a to-be-detected corrugated pipe mechanical seal; and corrugated pipe mechanical seals are assembled between the mechanical seal assembly shaft in the box and the mounting holes of the two glands of the box. According to the technical scheme, the technical purpose that the detected corrugated pipe mechanical seal assembly is subjected to dynamic simulation testing in the set high-temperature and high-pressure working condition environments of all gears is achieved, the requirement of a user for actually mastering the technical performance of a product is met, and the detection function is complete.

Vehicle inflatable membrane floating-assisting and resistance-reducing airbag carrying system

The invention provides a vehicle inflatable membrane floating-assisting resistance-reducing air bag carrying system which comprises a vehicle head air bag module and a vehicle body air bag module. The bicycle head air bag module comprises a bicycle head air bag storage barrel, a bicycle head air bag, a folding nose cone, a bicycle head air bag inflation control unit, a gas generator and an inflation assembly. The vehicle body airbag module comprises a vehicle body airbag storage barrel, a vehicle body airbag, a vehicle body airbag inflation control unit, an unfolding motor, a recovery motor, a sliding rail, a fixed guide wheel, an unfolding cable, a gas generator and a relief device, and an inflation assembly, and the vehicle head airbag module and the vehicle body airbag module jointly form a catamaran type drag reduction structure suitable for underwater navigation. The carrying layout basically does not influence the land use performance of the vehicle, one-key automatic operation can ...

Novel oxygen and laughing gas linkage flow regulating valve

The invention relates to an oxygen and laughing gas flow regulation valve for controlling the flow ratio of oxygen to laughing gas. The flow is controlled by adopting a novel linear gap structure. The novel oxygen and laughing gas linkage flow regulating valve consists of a regulating valve main body, a linear gap structure flow control module (a flow control module for short), a linkage module, a transitional bolt and an oxygen and laughing gas regulating knob, and is characterized in that: the flows of the oxygen and the laughing gas are controlled by matching moving paths of flow regulating slide blocks and a linear gap of a flow sheet; and the flow ratio of the oxygen to the laughing gas is determined by the moving path of the oxygen flow regulating slide block and the moving path of the laughing gas flow regulating slide block. A pinion wheel of which the number of teeth is equal to 30 is arranged on a laughing gas flow regulating shaft; a gear wheel of which the number of teeth is ...