19results about How to "Avoid pores" patented technology

The invention discloses a pressure-controlled drainage gas production method and system for a coal-bed gas well. The pressure-controlled drainage gas production method comprises the steps that drainage is conducted through the first daily drainage amount, wherein the first daily drainage amount meets the eliminating demand for production interference objects in a coal bed; and a pressure-supplementing medium is injected while drainage is conducted, and the downhole flow pressure daily drop amount is maintained as a first differential pressure value so as to avoid retracting and closing of pores and cracks in the coal bed. According to the pressure-controlled drainage gas production method for the coal-bed gas well, the drainage speed at the drainage state can be conveniently determined, the eliminating demands for drilling and completion fluids, pulverized coal and slack coal in the coal bed can be met, and meanwhile, retracting and closing of the pores and the cracks in the coal bed can also be avoided; and compared with the prior art, the pressure-controlled drainage gas production method is simple in process, the production efficiency of the coal-bed gas well can be greatly improved, and quite high practical value and popularization value are achieved.

The invention provides a preparation method of a high-temperature-resistant antioxidant chopped carbon fiber reinforced ceramic-based composite material, and relates to the field of ceramic-based composite material preparation, and the preparation method comprises the following steps: S1, selection and surface treatment of reinforced fibers: selecting chopped carbon fibers as a reinforced material, and carrying out surface modification treatment on the chopped carbon fibers to obtain the reinforced fibers; according to the present invention, the surface modification treatment is performed on the short carbon fiber, and particularly the SiC coating is coated on the fiber surface by using the chemical vapor deposition (CVD) method, such that the oxidation resistance of the carbon fiber under the high temperature condition is effectively improved. The coating enhances the stability of the fiber, reduces the oxidation loss of the fiber at high temperature, enhances the interface bonding force between the fiber and the ceramic matrix, and avoids stripping or interface failure in a high-temperature environment, thereby ensuring the overall stability and service life of the material.

The invention belongs to the technical field of aluminum oxide ceramics, and particularly relates to a high-strength 99 aluminum oxide ceramic as well as a preparation method and application thereof. The boehmite and the hydrotalcite are used as main components of a binder, the boehmite and hydrotalcite composite sol is obtained by adopting a specific preparation method, and the boehmite and hydrotalcite composite sol is applied to a preparation process of aluminum oxide ceramics, so that an aluminum oxide ceramic material with high strength and high density can be obtained. Besides, the sintering aid adopted by the invention can react with MgO and Al2O3 generated by decomposition in the binder to generate a low-melting-point liquid phase, so that redistribution of substances among particles and filling of pores are facilitated, and the density and the dielectric property are further improved.

This utility model discloses a mold for processing and casting hollow concrete bricks, relating to the field of fuel tank technology. It includes a base, with a mounting frame fixedly installed on the upper end of the base. A brick casting platform is fixedly installed on the upper end of the mounting frame. The brick casting platform has several through holes, each containing a movably inserted plastic block. One end of the plastic block is connected to a lifting drive assembly. A plastic template is installed on the upper end of the brick casting platform. Two sets of electric telescopic rods are fixedly installed on both sides of the mounting frame, with their drive ends fixedly installed on both sides of the plastic template. This utility model uses a drive cylinder to lower the mounting platform and the plastic block. The plastic block slides out of the brick casting platform through the through holes, and then the electric telescopic rods lift the plastic template, allowing workers to easily remove the formed hollow concrete bricks from the brick casting platform without sequentially removing the plastic template, thus improving demolding efficiency.

The present application relates to crystallizer drying technical field, especially to a kind of crystallizer baking drying device and its using method, including crystallizer main body, and fixedly installed on the support vertical frame of crystallizer main body, be provided with for the drying mechanism in the drying of crystallizer main body inside in support vertical frame, the sealing mechanism for being used to seal its top in crystallizer main body, wherein, drying mechanism includes setting in the inside of crystallizer main body lifting frame, and setting in the top of lifting frame movable crosspiece, heater is slidably arranged on lifting frame.The present application is favorable to the more thorough water vapor drying in the crystallizer main body, improves the effect of crystallizer baking drying, keeps the inside of crystallizer completely dry to facilitate to solve the electric slag ingot blowhole, avoid the heat of prior art cannot be uniformly transmitted to the entire crystallizer inside, and the crystallizer drying is not sufficient condition caused, while being favorable to the opening and closing of crystallizer main body more convenient, improves the sealing of crystallizer main body.

The application relates to an anode target disc welding structure and an anode target disc preparation method. The anode target disc welding structure comprises a ring-shaped base, a ring-shaped base body and solder. Two stop portions are recessed on one side of the ring-shaped surface of the ring-shaped base. A raised ring is formed between the two stop portions, and the surface of the raised ring is provided with a plurality of spaced grooves. The ring-shaped base body is located on one side of the ring-shaped base close to the stop portions. Two stop rings are protruded on the ring-shaped surface of the ring-shaped base body close to the ring-shaped base, and a containing groove is formed between the two stop rings. The containing groove corresponds to the raised ring and can accommodate the raised ring. The ring-shaped base body and the ring-shaped base have a preset containing space. The solder is located on the raised ring. The volume of the solder is not less than the volume of the preset containing space. The application can improve the connection strength and stability between the ring-shaped base and the ring-shaped base body, thereby improving the stability and reliability of the anode target disc work.

The application belongs to the technical field of new energy battery pole friction welding, in particular to a new energy battery pole friction welding device; it comprises: a friction welding machine, which can perform friction welding on copper poles and aluminum poles; a manipulator, the front end of the manipulator is provided with a gripper, and the clamping of the gripper and the manipulator realizes the feeding and discharging of the friction welding machine; the new energy battery pole friction welding device further comprises: a cleaning unit; the front end of the manipulator is provided with a cleaning unit, when welding, the upper surface of the copper pole and the lower surface of the aluminum pole are welded, so the cleaning unit realizes the pre-welding cleaning of the upper surface of the copper pole and the lower surface of the aluminum pole through wiping and blowing and the overturning of the gripper; the welding quality is ensured, and the welding yield of the new energy battery pole is improved.

The utility model discloses a bayonet type sanitary pinch valve, which comprises a valve seat, the valve seat comprises a seat body, a barrier strip and a mounting flange, the seat body is a cylinder, a cavity is arranged in the seat body, a hole with a round inner part and a narrow outer part is arranged on a single side of the side wall and is used for clamping a hose, a strip-shaped positioning slide way is radially arranged at the aligning center position of the side wall, and openings are arranged at two ends of the seat body. One end is connected with the mounting flange, two mounting holes are symmetrically formed in the other end close to the opening and used for fixing the barrier strip and the valve element, the valve element is slidably arranged in the cavity of the seat body, and when the valve element moves in the direction away from the mounting flange, the distance between the valve element and the seat body is shortened, and a pipeline is clamped and fixed. According to the pipe clamp valve, the air cylinder drives the valve element to slide in the cavity of the seat body, a pipeline is clamped and fixed through the chuck at one end of the valve element and the seat body, operation is easy, and fixation is firmer.

The utility model discloses a natural gas fuel cell device, the anode plate, proton exchange membrane and cathode plate are set gradually along material direction in battery main part, the cooling tank is located at the bottom of battery main part, the inside of cooling tank is provided with heat exchange pipe, the side of battery main part is close to the cathode plate and has the oxidant inlet pipe, the preheating box is placed in the outside of battery main part, the spiral pipe way is provided in the preheating box, one end of spiral pipe way is located in the outside of preheating box, one end of spiral pipe way extends to battery main part and is contacted with anode plate, the lateral wall of preheating box has the water inlet pipe and return pipe, the input end of heat exchange pipe is linked with return pipe, the output end of heat exchange pipe is linked with water inlet pipe, the utility model utilizes the waste heat energy of battery main part and preheats natural gas, reduces the demand of system to external energy, reduces energy consumption, avoids the heat pollution caused by direct waste heat emission simultaneously.

The application discloses a kind of chopped carbon fiber reinforced fluorine-containing resin composite material and preparation method and application, belong to composite material preparation technical field, the application includes: to chopped carbon fiber is sequentially carried out surface activation treatment, homogeneity coating treatment and chemical bonding treatment, to be gradually structured interface bonding layer on the surface of chopped carbon fiber;The treated chopped carbon fiber is mixed with fluorine-containing resin matrix, and extrusion forming is obtained, and composite material is obtained.The application is sequentially carried out surface activation, homogeneity coating and the three-step synergistic modification of chemical bonding, first activation provides reaction site, then pass through homogeneity coating and eliminate the interface energy difference between fiber and matrix, finally pass through chemical bonding and lock interface, and gradually structured interface layer of strong combination, effectively solve the problem that chopped carbon fiber and fluorine-containing resin interface compatibility is poor, and easily peeling, realize the significant improvement of the mechanical properties of composite material.

The invention provides composite precise repairing equipment for a metal component, and relates to the field of metal component repairing. The composite precise repairing equipment for the metal component comprises a base tool used for being installed on a machining center workbench, and further comprises a displacement clamp, an X-axis, Y-axis and Z-axis assembly, a laser-arc composite assembly and a coaxial powder blowing assembly, and the displacement clamp is installed on the base tool and used for achieving swinging and rotating of a workpiece; the XYZ-axis assembly is installed on the base tool, and the laser arc composite assembly is installed on the XYZ-axis assembly and used for moving along the X axis, the Y axis and the Z axis. According to the composite precise repairing equipment for the metal component, the machining freedom degree can be freely switched even in the face of cavitation and recesses in complex shapes, when a thin-wall workpiece is repaired, excessive profiles do not need to be cut off through a traditional tool, the laser arc composite assembly and the laser arc composite assembly are combined, high efficiency and high quality are achieved, and layer-by-layer stacking machining is achieved; and the original profile performance can be better recovered.

The invention relates to the field of aluminum oxide ceramics, in particular to high-strength 95 aluminum oxide ceramics and a preparation method and application thereof.The high-strength 95 aluminum oxide ceramics are prepared by adopting boehmite and hydrotalcite as main components of a binder and adopting the following method: S1, the boehmite and the hydrotalcite are mixed according to the mass ratio of 1: (1-3) and ground till the particle size ranges from 60 nm to 100 nm, and a nano powder mixture is obtained; s2, the ground nano powder mixture is added into a dispersing agent to be evenly mixed, a binder precursor is obtained, and the mass ratio of the nano powder mixture to the dispersing agent is 10: (0.1-0.5); and S3, slowly adding a nitric acid solution with the pH value of 2-3 into the binder precursor to obtain the binder disclosed by the invention. When the binder is applied to an aluminum oxide ceramic preparation process, the defect that pores and cracks appear in aluminum oxide ceramic due to the fact that a traditional binder is decomposed and overflows under the high-temperature condition can be overcome, the compactness of the aluminum oxide ceramic is further improved, and the strength and hardness of the aluminum oxide ceramic are improved.

The invention relates to a flange surface anti-corrosion treatment device which enables a spraying process to be carried out in an approximately oxygen-free environment, prevents a coating material from being oxidized, prevents bubbles or pores from being generated in a coating, improves compactness and adhesive force of the coating, enables the coating to be more uniform and smoother, and has better protection performance. The flange plate is uniformly heated through the induction heating coil, the internal stress of a coating in the curing process can be reduced through heating, the coating is prevented from cracking or stripping, rapid cooling is achieved after spraying is completed, meanwhile, particulate matter generated in the spraying process is taken away through airflow, pollution is reduced, efficient air purification is achieved, and the environment and the health of operators are protected; particulate matters in circulating gas are efficiently removed through the multi-stage filtering system, the cleanliness of exhausted gas is ensured, meanwhile, the particulate matters on the negative electrode ring and the positive electrode ring are automatically cleaned through the self-cleaning assembly, manual intervention is reduced, long-term efficient operation of the system is kept, and the maintenance cost is reduced.

The utility model discloses a kind of vacuum slurry production lines, it is related to precision casting technical field, to solve the problem of traditional slurry process low efficiency, slurry thickness uneven and bubble containing.The production line is mainly composed of slurry bucket, vacuum machine, sanding machine, blowing module and multi-axis manipulator. Among them, slurry bucket is used to perform slurry operation to workpiece;Blowing module is located above slurry bucket, can carry out blowing treatment to workpiece after slurry, to remove excess slurry;Vacuum machine is used to carry out vacuumizing to workpiece, eliminate bubble in slurry;Sanding machine is responsible for completing sanding to slurry workpiece;Multi-axis manipulator is connected with the clamp of grabbing workpiece, can grab workpiece and drive it to move between slurry bucket, vacuum machine, sanding machine and blowing module, realize whole-process transfer.This production line is through the cooperation of multiple equipment and automatic transfer, improve slurry efficiency and shell quality, meet the high-quality demand of precision casting to shell, applicable to the precision shell production of high-end manufacturing field.

The invention provides a fiber-reinforced hard alloy and a preparation method and application thereof, and belongs to the technical field of hard alloys. The fiber-reinforced hard alloy comprises a hard alloy matrix and hard alloy fibers dispersed in the hard alloy matrix, the preparation raw materials of the hard alloy fibers comprise first WC powder, first Co powder and a modifier. And preparation raw materials of the hard alloy matrix comprise second WC powder and second Co powder. According to the fiber-reinforced hard alloy and the preparation method thereof, the hard alloy fiber is adopted as a toughening material and is dispersed in the hard alloy matrix of the same system to obtain the fiber-reinforced hard alloy, synergistic densification of the two hard alloys can be achieved, and the fiber-reinforced hard alloy has high hardness and good toughness at the same time; the problem of contradiction between hardness and toughness of fine and medium crystal hard alloy is solved, and the hard alloy can be applied to the fields of underground mine drilling, mold forming and the like under a certain impact working condition.

The invention discloses a combined crucible for continuous crystal pulling and a preparation method thereof, the combined crucible comprises a first crucible and a second crucible, the second crucible is arranged in the first crucible, the second crucible and the first crucible form a melt interlayer, the side wall of the second crucible is provided with at least one first through hole, and the second crucible is communicated with the first crucible. According to the combined crucible for continuous crystal pulling, the two crucible sleeves are adopted to form a communicating structure, and the problems that in the existing crystal pulling process, the liquid level is lowered, efficiency is low, and the influence of granular silicon on silicon liquid in the second crucible is large are solved.

This utility model relates to the field of forming tool technology and discloses an integrated forming tool with a milling and chamfering composite cutting edge. The tool shank has a receiving rod fixedly installed at its top and a milling cutter fixedly installed at its bottom. A limiting groove is formed on the outer wall of the tool shank, and an adjustment mechanism is provided inside the limiting groove. The adjustment mechanism includes a sliding ring slidably connected to the outer wall of the tool shank, and a limiting block is fixedly installed at the bottom of the sliding ring. A connecting block is fixedly installed at the bottom of the limiting block, and a chamfered portion is fixedly installed at the bottom of the connecting block. This utility model, through the design of the sliding ring, limiting block, connecting block, retaining ring, rotating ring, and reinforcing block, achieves rapid position adjustment of the chamfered portion, allowing adjustment according to the depth of the milling hole, thus improving the overall applicability of the tool. Simultaneously, the engagement of the limiting block and reinforcing block within the limiting groove enhances the torque bearing capacity of the tool during rotation.

The utility model provides a kind of resistance material belt laser welding device, it includes feeding assembly, welding assembly and winding frame sequentially arranged along material belt feeding direction.Welding assembly includes jig, vacuum box, distance adjusting support and two laser welding machines on distance adjusting support;Jig includes base, sealing cover, upper support, limit sliding block and two auxiliary clamping blocks, base is equipped with feeding end, discharge end and welding area, auxiliary clamping block is equipped with gas groove;Sealing cover is equipped with optical glass, optical glass is attached with anti -reflective film;First retaining roller and reference shaft are equipped in welding area, upper support is located in sealing cover, upper support is equipped with second retaining roller, limit sliding block is equipped with limit shaft.First retaining roller, second retaining roller, limit shaft and reference shaft cooperate to provide limit to material belt, avoid to occur to deviate or to miss weld, and vacuum box and auxiliary clamping block are vacuumized in welding position, remove the impurity generated in welding process, avoid the formation of blowhole or inclusion in weld position, improve welding quality.

This invention discloses an integrated mullite / rare earth silicate environmental barrier coating, its preparation method, and its application, belonging to the field of coating preparation technology. The environmental barrier coating is deposited on a C / C composite substrate, and from the surface of the C / C composite substrate outwards, consists of a SiC bonding layer, a mullite intermediate layer, and a rare earth silicate composite surface layer; the rare earth silicate composite surface layer is RE2SiO5-RE2Si2O7-RE3Al5O 12 RE can be Yb, Y, or Lu. The mullite intermediate layer and rare earth silicate composite surface layer are prepared by mixing SiC oxide powder with Al2O3 powder and RE2SiO5 powder with Al2O3 powder, respectively, into two slurries. These slurries are then applied layer by layer to the surface of the SiC bonding layer and dried, followed by in-situ heat treatment to form the composite layer. An in-situ reaction at the interface between the mullite intermediate layer and the rare earth silicate composite surface layer creates a component transition zone, exhibiting a multiphase structure where rare earth dual silicate phases are dispersed within the mullite framework. This environmental barrier coating addresses the technical problem of weak interlayer bonding and easy cracking during thermal cycling in existing coatings.