9results 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.

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 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.

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.