33results about How to "High shell strength" patented technology

The invention relates to an anti-interface reaction composite ceramic shell. The shell consists of a surface layer and a reinforcing layer, the surface layer is made of yttria powder as refractory powder, yttria sand as refractory aggregate and silica sol as binder by adopting a multi-coating method, the reinforcing layer is made of electro-fused mullite powder as refractory powder, electro-fused corundum sand as refractory aggregate and silica sol as binder by adopting the multi-coating method, the reinforcing layer is fixed on the top surface of the surface layer, and the reinforcing layer and the surface layer are of an integrated structure; the total thickness of the shell is 5mm to 13mm, wherein the thickness of the surface layer is 0.15mm to 1.4mm. After the shell produced by the method is roasted, the surface of the cavity of the shell is smooth and does not have cracks, the surface does not have floating sand and floating powder, and the shape of a blade wax pattern is completely and clearly copied.

The invention relates to an improved energy-storage impact-type pneumatic wrench. An air distribution mechanism is additionally arranged in an impact mechanism, the structural design of a hammer device is optimized, the impact energy and the output torque are effectively improved and the dead weight is obviously reduced. The energy-storage impact-type pneumatic wrench has the outstanding advantages that the structure is unique and novel, the weight is light, the torque is large, the pneumatic wrench is flexible and convenient and is suitable for mobile operation, the safety, the reliability and the efficiency are high, the labor productivity can be greatly improved and the labor intensity of operators is reduced. The improved energy-storage impact-type pneumatic wrench is suitable for use in an assembling line and in dangerous environments such as flammable and explosive environments, upper air and the like, and is especially suitable for rushed deadlines and rushed repair operation in industries such as petroleum, chemical industry and the like. The improved energy-storage impact-type pneumatic wrench is a high-efficiency manual tool for disassembling and assembling nuts, and can be widely used for bolt disassembling and assembling operation in industries such as machinery manufacture, petroleum, chemical industry, power plants, bridges, ships, locomotives and the like.

The invention discloses a ceramic component, a shell device of a mobile terminal and the mobile terminal. The ceramic component comprises a ceramic shell and a fastener; the thickness of the ceramic shell is smaller than that of a conventional ceramic rear cover in the mobile terminal; the ceramic shell is connected with the fastener; the fastener is any one of a metal plate, a magnesium alloy, a stainless steel and a plastic component. The embodiment of the invention can reduce the thickness of the ceramic shell, so as to reduce the whole weight of the ceramic component.

The invention discloses a method for preparing a shell primary layer coating for titanium alloy precision investment casting. The method includes the steps that electric melting yttrium oxide powder with a certain coarse and fine powder ratio is obtained through preprocessing of primary layer fireproof materials, a compound binding agent is prepared from organic acid, an inert organic solvent and acetic acid zirconium, and finally the primary layer coating is prepared. According to the method for preparing the shell primary layer coating for titanium alloy precision investment casting, the specific surface area of the yttrium oxide powder is reduced, organic acid and yttrium oxide can generate hydroxide of yttrium salt, the hydration of yttrium oxide is weakened, and the function of the high-temperature binding agent is achieved; viscosity is adjusted regularly, volatilization is reduced regularly, and stability of the coating is kept. The performance of the primary layer coating prepared through the method is stable and can be prolonged for 20 days, the temperature of the coating is 20+/-5 DEG C, and therefore preparing and preserving can be conducted in a common constant-temperature and constant-humidity environment, and the coating preparing and preserving technology control is simplified.

The invention discloses a mineral substance additive premix of white jade snails. The standard is to prepare 25kg of premix, and the components thereof and the use amount thereof are: 240-360g of copper sulfate, 1, 664-2, 496g of ferrous sulphate, 1, 664-2, 496g of manganese sulphate, 1, 720-2, 580g of zinc sulfate, 832-1, 248g of 1% cobalt chloride, 133.36-200.4g of 1% sodium selenite, 384-576g of 1% potassium iodide and the balance of bran cake. The premix has excellent compatibility, supplements the requirement of white jade snails on mineral substances and promotes growth. The mineral substance has no residue and no pollution in snail meat. The premix can be added to feed according to the addition ratio of 0.25 percent in the total weight of the feed.

The invention provides a processing method of an air inlet end cone. The processing method comprises the steps of (1) preparing a wax mould; (2) preparing a mould shell; (3) dewaxing; (4) roasting the mould shell; (5) pouring; (6) after pouring, carrying out shell shaking, shot blasting, cutting, acid pickling and finishing; and (7) processing end openings of the air inlet end cone through adopting rolling. According to the processing method, through adopting a reasonable shell making technology, the obtained shell is high in strength and is easily unshelled, the production technology is simplified, the production cost is reduced, and the production efficiency is improved.

The invention relates to the field of a motor, and specifically relates to a high-rotation speed and rapid heat-conduction motor. The motor comprises a stator, a rotor sleeved in the stator and a rotation shaft penetrating the rotor. The motor also comprises a shell and a base which fit with each other. The shell sleevesthe stator. Vent holes are arranged on a shell end face. A positioning and installing hole post is arranged at the center of the base. A circuit board is arranged on an outer side frame of the base. A drainage fan is fixedly arranged on the rotation shaft and is located at the outer side of the shell end face. A plastic package body is packaged out of the stator. A plastic package reinforcing connection ring is integrally connected with the end face of one side of the plastic package body facing towards the base. The plastic package reinforcing connection ring is arranged against the side wall face of the shell. Airflow at the rear end of the circuit board is sent in the motor through the circuit board and the vent holes on a base plate. Equally, the airflow between the circuit board and the base plate is sent in the motor through the vent holes on the base plate, then the heat in the motor is absorbed by the airflow, and then the airflow is rapidly exported out of the motor through vent holes on an incline reinforced hole slot wall. The whole motor has the advantages of high integrity, compact structure, convenient disassembly, low cost, high strength, high stability and low noise.

The invention relates to a bismaleimide resin hollow polymer microsphere, a preparation method thereof and a method for modifying cyanate ester resin. The bismaleimide resin hollow polymer microsphere with a shell layer containing a high-activity dangling double bond group and a maleimide group is prepared by adopting a template method and a precipitation polymerization mode, and the active group can chemically react with cyanate ester resin at a relatively low curing temperature; as a heat-resistant modifier, the microspheres can effectively enhance the mechanical properties of modified resin, and meanwhile, by utilizing the unique hollow structure and excellent dielectric properties of the microspheres, the dielectric loss and dielectric constant of a cyanate resin matrix can be effectively reduced, so that the requirements in the application fields of large-scale integrated circuits, radar antennas, 5G communication and the like are expected to be met.

The invention provides an injection mold for molding of a carbon fiber composite material outer shell; the injection mold comprises a fixed mold, a movable mold and a runner system; the runner system forms runners having a plurality of pouring gates communicated with a molding cavity of the injection mold. The invention also provides a molding method using the injection mold, wherein the molding method comprises the steps: the fixed mold and the movable mold are assembled, so that the pouring gates are communicated with the molding cavity; a carbon fiber composite material successively passes through a main runner and sub-runners and then is injected into the molding cavity by the plurality of pouring gates, and thus the outer shell is obtained; and the fixed mold and the movable mold are opened, the outer shell is pushed out from one side of the fixed mold through a thimble and is separated from the injection mold. The injection mold and the molding method are simple and practical, are suitable for injection molding of the carbon fiber composite material, and have low requirement on liquidity of the carbon fiber composite material which can be molded; and the carbon fiber content of the carbon fiber composite material which can be subjected to injection molding is higher, and the molded carbon fiber composite material outer shell has higher strength.

The invention discloses a device for uniformly mixing medicines under the condition of low rotating speed. The device comprises a stirring bin, explosion-proof structures, an electrostatic neutralization structure and a dehumidification structure. A crusher is arranged in the middle of the interior of the stirring bin, and one side of the crusher is connected with a servo motor. A feeding ladder is arranged on one side of the servo motor, and handrails are installed at the two ends of the feeding ladder. The explosion-proof structures are arranged at the top end and the bottom end of the stirring bin. A fixing rod is arranged at the top end of one side of the stirring bin, the dehumidification structure is installed on one side of the bottom end of the fixing rod, and the electrostatic neutralization structure is installed on the other side of the bottom end of the fixing rod. Supporting frames are installed on the two sides of the bottom end of the stirring bin, and a base is installed at the bottom ends of the supporting frames. By means of an exhaust fan in the dehumidification mechanism, moisture in air is pumped out, the problem that explosives cannot be used due to the fact that the explosives are exposed in the air and affected with damp is solved, and the production cost is saved through the structure.

A main body of the swing arm shell is an arm support extending leftwards and rightwards, a transmission cavity used for installing a cutting transmission mechanism is formed in the arm support, and an input end gear installation hole and an output end gear installation hole are formed in the two ends of the transmission cavity respectively. The ends where the input end gear mounting hole and the output end gear mounting hole are located are the high-speed end and the low-speed end of the arm support respectively, a connecting arm overhanging forwards from the arm support is arranged in the middle of the arm support, a front arm and a rear arm overhanging leftwards or rightwards from the connecting arm are arranged on the connecting arm, and the front arm, the rear arm and the high-speed end of the arm support are sequentially arranged at intervals from front to back. The front arm and the rear arm are respectively provided with a front pin shaft mounting hole and a rear pin shaft mounting hole which are used for mounting the cutting motor as a pin shaft; and the front pin shaft mounting hole and the rear pin shaft mounting hole are coaxial with the input end gear mounting hole. According to the invention, a larger mining range can be provided, the machine body can be shortened, and the gravity center of the coal mining machine can be improved.

The invention relates to a cutting mechanism of a thin seam mining machine, which is characterized in that a swing arm shell is hinged with a main body shell by taking a cutting motor as a pin shaft, the cutting motor is fixed relative to the main body shell, the main body of the swing arm shell is an arm frame extending left and right, and a connecting arm overhanging forwards from the arm frame is arranged in the middle of the arm frame; a front arm and a rear arm which overhang leftwards or rightwards are arranged on the connecting arm, the front arm, the rear arm and the high-speed end of the arm frame are sequentially arranged at intervals from front to back, the front arm and the rear arm are hinged to a first lug base, a second lug base and a third lug base on the front portion of the main body shell, and loads from the roller are transmitted to the main body shell. An input end gear of a cutting transmission mechanism installed in the high-speed end of the arm frame is in coaxial transmission connection with an output shaft of the cutting motor, a height adjusting oil cylinder is arranged in an inner cavity in the front portion of the main body shell, and the two ends of the height adjusting oil cylinder are hinged to the front arm and the main body shell respectively. A large mining range can be provided, the machine body can be shortened, and the gravity center of the coal mining machine is improved.

The invention relates to a thin seam short-span coal mining machine swing arm shell, a main body of the shell is an arm frame extending left and right, a transmission cavity used for installing a cutting transmission mechanism is arranged in the arm frame, and the left end and the right end of the arm frame are respectively a high-speed end and a low-speed end. An input end gear mounting hole and an output end gear mounting hole are formed in the rear portion of the high-speed end of the arm frame and the low-speed end of the arm frame respectively, a connecting arm overhanging forwards from the arm frame is arranged in the middle of the arm frame, and a front arm overhanging leftwards or rightwards from the connecting arm is arranged on the connecting arm. The front parts of the high-speed ends of the front arm and the arm frame are respectively provided with a front pin shaft mounting hole and a rear pin shaft mounting hole which are used for mounting the cutting motor as a pin shaft; and the front pin shaft mounting hole, the rear pin shaft mounting hole and the input end gear mounting hole are coaxial. According to the invention, a larger mining range and larger cutting power can be provided, the machine body can be shortened, and the gravity center of the coal mining machine can be improved.

The invention relates to a thin seam short-span coal mining machine cutting mechanism which comprises a cutting motor, a swing arm shell and a front main body shell, a main body of the swing arm shell is an arm frame extending left and right, a connecting arm overhanging forwards is arranged in the middle of the arm frame, and a front arm overhanging leftwards or rightwards is arranged on the connecting arm. A first lug seat, a second lug seat and a connecting base are sequentially arranged on the right edge or the left edge of the front main body part shell from front to back, and the high-speed end of the front arm and the high-speed end of the arm frame are mutually inserted and hinged with the first lug seat, the second lug seat and the connecting base of the front main body part shell; an output shaft of the cutting motor is in coaxial transmission connection with an input end gear of a cutting transmission mechanism in the arm frame, and the cutting motor is fixedly connected and rotationally connected relative to the front main body part shell and the swing arm shell respectively. According to the invention, a larger mining range and larger cutting power can be provided, the machine body can be shortened, and the gravity center of the coal mining machine can be improved.