42results about How to "No flow phenomenon" patented technology

The invention discloses a technology of processing a magnesium alloy with high intensity and flexibility, which subsequently includes vacuum melting, continuous casting, extrusion, forging and such procedures. The invention reasonably matches the solution body composition and the metamorphism liquid during casting process, and the grains are refined through the chilling action of a crystallizer at first; the magnesium alloy liquid is transmitted by an electromagnetic pump so as to prevent secondary oxidation and ensure safety in casting of the magnesium alloy; and then further refining the grains through electromagnetic mixing power, large ratio extrusion and heat treatment secondary crystallization, which effectively ensures tiny enough isometric crystals can be obtained from the alloy microstructure. The magnesium alloy elements of the automotive steering control arms, support elements of motorcycles and bicycles, can be obtained for the first time by the improvement, which are fully filled, good in surface quality, fine and even in grain size, reasonable in streamline distribution and without disordered streamline, vortexing and draining phenomena. The invention combines a plurality of technological processes into a production cycle, which reduces the turnover links, saves energy and reduces cost.

The invention provides automobile paste high-expansion vibration-reduction and sound-insulation rubber and a manufacturing process thereof. Butadiene rubber, EVA, liquid butyronitrile, rubber oil, epoxy resin, polyisobutene, nano activated calcium carbonate, a foaming agent, sulfur, an accelerating agent, a rust inhibitor, a vulcanizing agent, a plasticizer and a tackifier are selected and used, and a pressure kneader is used for mixing the dispersed materials. The rubber is spread on corresponding parts of steel plates in an automobile body welding workshop by a glue spreading pump; the rubber passes through a painting shop after automobile body welding, is heated with an electrophoretic paint drying line to foam to fill up an entire cavity, and achieves the effects of vibration reduction, sound insulation, dust separation and dust prevention.

The invention relates to high-voltage-insulation sealing adhesive. The high-voltage-insulation sealing adhesive comprises a first composition and a second composition which are stored separately, wherein the first composition comprises the following components in parts by weight: 40-60 parts of hydroxy-terminated polysiloxane, 3-10 parts of silicon dioxide, 10-60 parts of a filler, 1-5 parts of a cross-linking agent and 0.2-1 part of a silane coupling agent; the second composition comprises the following components in parts by weight: 30-60 parts of hydroxy-terminated polysiloxane, 0-10 parts of polymethyl siloxane, 10-60 parts of a filler and 0.8-1.5 parts of a catalyst. The first composition and the second composition are stored separately, and during room-temperature mixing, sulfuration reaction is performed on the hydroxy-terminated polysiloxane, the cross-linking agent and the silane coupling agent under the action of the catalyst; after the sulfuration reaction, a product is excellent in flame retardance, electrical performance and bonding strength, and has shockproof and waterproof functions; the two compositions are shaped as blocks, and can be directly kneaded into any shapes by hands for sealing, so that the high-voltage-insulation sealing adhesive is easy and convenient to use.

The invention discloses a high temperature-resistant step-cured epoxy paint and an application method of the paint. The high temperature-resistant step-cured epoxy paint is obtained by mixing ingredient A, ingredient B and ingredient C in A certain proportion, wherein the ingredient A is an epoxy resin ingredient and comprises E-20 bisphenol A epoxy resin, E-51 bisphenol A epoxy resin, F-51 phenolic aldehyde epoxy resin, carboxylate-terminated nitrile butadiene rubber modified tetraglycidylamine type epoxy resin, aluminum oxide, aluminum nitride, fumed silica, a wetting dispersant, and a coupling agent; the ingredient B is a first curing agent ingredient and comprises an YH-82 epoxy curing agent, a C-1041 anacardol epoxy resin curing agent, DMP-30, fumed silica, and aluminum nitride; and the ingredient C is a second curing agent ingredient and comprises hexahydrophthalic anhydride, fumed silica, and aluminum nitride. The high temperature-resistant step-cured epoxy paint disclosed by the invention can be pre-cured at low temperature, does not form an unsmooth paint film, is cured at a high temperature, and remains the advantages of high strength and good adhesive force of the paint film which is cured at a high temperature.

The invention relates to a method of the amorphous alloy core thin epoxy resin coating, characterized by using the brush coating. The method includes removing the surface dust of the amorphous alloy core through a brush; sticking the adhesive tape with the width 1 cm beside the coating along the line A-A on the amorphous alloy core 1, for preventing the epoxy resin extravasating; brushing the epoxy resin evenly on the core surface above the line A-A on the amorphous alloy core 1, wherein the thickness of the epoxy resin is lower than 1mm; putting the amorphous alloy core with the coating into the oven for roasting at the roasting temperature 100-150 DEG C for 10 minutes to 30 minutes. The invention has the advantages of lower no-load loss, smaller no-load current; the solidifying time of the epoxy resin is reduced for 60%, the whole height of the core is reduced for 2-3 minutes, thereby reducing the size of the transformer for saving.

The invention relates to processing equipment for fireproof cross-band veneer. The processing equipment comprises a rack, a horizontal lifting workbench is arranged in the rack, at least two heating forming insulation boards capable of sliding on the rack are arranged on the horizontal lifting workbench, a heating forming area is formed between every two adjacent heating forming insulation boards, the heating forming insulation boards are perpendicular to the lifting workbench, and a hot water circulating pipe is arranged in each heating forming insulation board. A left ejector plate and a right ejector plate are arranged at the two ends of the rack, pushed by a tightening mechanism and used for compressing the heating forming insulation boards and workpieces to be processed to achieve forming. The processing equipment is arranged horizontally, so that the fireproof cross-band veneer is convenient to take and store, no complex lifting device is needed, fireproof mortar materials are poured conveniently, one-shot forming is achieved, mortar cannot flow everywhere, the surface of the fireproof cross-band veneer is smooth, and the processing equipment can be used for fireproof cross-band veneer of different sizes.

The invention provides a lateral permeable road and a construction method thereof. A subgrade is formed by paving a treated soil layer, a clay compacted layer and a permeable layer from bottom to top respectively, wherein the permeable layer is composed of permeable broken stone bags which are closely arranged in a staggered manner; a leveling layer and a pavement surface are paved on the permeable layer. The construction method comprises the following steps: performing filling earthwork construction on the bottom part of the subgrade, mixing lime treated soil in the excavated road cutting and then compacting to form the treated soil layer; paving a geomembrane, putting a clay layer on the geomembrane and compacting to form the clay compacted layer; putting broken stones in permeable woven bags and sealing to form the permeable broken stone bags; flatly laying the permeable woven bags in a layered manner and closely arranging the permeable woven bags above the clay compacted layer, closely arranging the permeable broken stone bags of every two adjacent broken stone permeable layers in a staggered way and filling the gap between the adjacent broken stone permeable layers with the broken stones, thereby forming the permeable layer; putting soil on the permeable layer and compacting to form the leveling layer; performing pavement construction on the leveling course.

The invention discloses a surface-mounted fuse based on a low-temperature co-fired ceramic technology and a preparation method thereof. The preparation method comprises the following steps of sequentially preparing low-temperature co-fired ceramic powder, an organic carrier, low-temperature co-fired ceramic slurry, fuse electrode slurry, terminal electrode slurry, a positive electrode layer and aback electrode layer, then sequentially printing the low-temperature co-fired ceramic slurry, the fuse electrode slurry and the terminal electrode slurry on a ceramic substrate, and then co-firing each printing slurry layer to obtain a surface-mounted fuse semi-finished product, then, manufacturing a glass protection layer and identification characters on the surface-mounted fuse semi-finished product, and finally, acquiring a surface-mounted fuse finished product through a post-processing procedure. According to the preparation method, a low-temperature co-fired ceramic technology is utilized, so that the problems of diffusion and uneven surface during printing of the fuse electrode slurry are solved, and the pattern of the fuse is more complete, clearer and higher in controllability; thefusing process of the prepared surface-mounted fuse is rapid, and the phenomenon of arc discharge is avoided.

The invention relates to traditional Chinese medicine pretreatment equipment which comprises a machine body, wherein the machine body comprises an interlayer and a cleaning tank; an ultrasonic transducer and ultrasonic generators are arranged at the bottom of the interlayer; a controller is arranged on the upper right of the interlayer; upper interlayers are arranged above the interlayer; motors are arranged in the upper interlayers; rotating shafts are connected with the output shaft ends of the motors; two rope winders are connected onto each rotating shaft in a clamping manner; a heating sheet is arranged on the outer wall of the cleaning tank; a water draining pipe is arranged at the bottom of the cleaning tank; a water draining solenoid valve is arranged on the water draining pipe; supporting columns are arranged at four corners of the bottom of the cleaning tank; an intercepting net is arranged above the supporting columns; hanging holes are formed in four corners of the intercepting net; water pipes are arranged around the upper part of the cleaning tank; a plurality of water nozzles are arranged on the water pipes; a water inlet pipe is connected with the water pipes; a water inlet solenoid valve is arranged on the water inlet pipe; a machine cover is connected with the upper part of the machine body; and a fan is arranged inside the machine cover. The traditional Chinese medicine pretreatment equipment provided by the invention has the advantages that the structure is simple, the cleaning efficiency is high, and traditional Chinese medicine is not easy to damage.

The invention discloses a manufacturing method of a high-flatness VIA-IN-PAD circuit board. The manufacturing method comprises the following steps that through holes are drilled in a production boardwhich is subjected to early-stage pressing; then the through holes are metallized through a copper deposition and full-board electroplating process; the metallized through holes are filled with resin;pre-baking is carried out on the production board, and the filled resin is made to be in a semi-solidified state; the resin which is protruded out of the board surface after plugging is removed by adopting a non-woven grinding plate; then the production board is baked, so that the filled resin is completely solidified; and then secondary copper deposition and full-board electroplating is carriedout on the production board; and an outer-layer circuit, a solder-resistant layer and silk-screen characters are manufactured on the production board in sequence, and then surface treatment is performed to manufacture the circuit board. According to the method, the manufacturing process flow is optimized, the flatness of the surface of the resin and the board surface of the production board can beimproved, and the problem that the resin-plugged hole is sunken due to the leveling of an abrasive belt is solved.

The invention discloses a positive-pressure sealed exposure suit, including one-piece clothes, air-purifying feeding system, power supply, and support wind board. The air-purifying feeding system includes shield, gas feeding system, purifying system and gas output passage. The air feeding system includes electric machine and fan. The purifying system includes filtering layer, inactivation layer, and absorbing layer. The under part of the purifying system is connected with the support wind board and is set on the one-piece clothes. It seals doctors and nurses in the exposure suit, and the micro fan blows the processed fresh air into the exposure suit for people to breathe and carries away heat and gas exhaled, so as to prevent serious infectious disease, like the infection caused by SARS virus. It can also be used as anti-chemical clothes and fire clothes.

A copper removal brush for a gun barrel is formed by a brush head, a pipe brush and a brush handle which are connected into a whole; an air inlet plug and one end of a screw plug are connected with two ends of the brush handle respectively; the screw plug is provided with a liquid shifting hole and a liquid leakage hole which are communicated with each other; the brush head and the other end of the screw plug are connected with two ends of the pipe brush respectively; a screw plug end of the pipe brush is connected with a liquid coating plate which is closely attached to the liquid leakage hole formed in the screw plug. The diameter of the liquid shifting hole formed at the edge of the screw plug is small, the copper removal brush rotates to enable a solvent to be squeezed to the pipe wall under the action of the centrifugal force, easily enter the screw plug from the liquid shifting hole and flow onto wool felt through the needle point size of liquid leakage hole formed in the screw plug to be used, the liquid quantity is not large, and accordingly the flowing of liquid droplets is avoided, the use of a cleaning solution is reduced, and the pollution to the environment is not produced. The brush head is smooth and accordingly collisions and bruises of the inner wall of a gun bore are not produced, metal combustion materials and dirt of every position of the gun bore are removed through the spiral pipe brush, the sealing effect is achieved due to a sealing ring and the wool felt which are arranged at the brush handle end, and a copper removal agent can be uniformly brushed at every position of the inner wall of the gun bore without leakage due to the wool felt and accordingly the inner wall of the gun bore is fully utilized and is not damaged.

The invention relates to the field of civil engineering, in particular to a polyurea reinforced self-protection anti-corrosion concrete block, which includes steel bars and concrete, the outer layer of the steel bar has a polyurea protective layer, and the polyurea self-protection anti-corrosion concrete There may be a through hole in the block, and the cross section of the through hole may be circular, square, or triangular. The block may have an outrigger on the left side and an inner groove on the right side. The invention has the advantages of strong material corrosion resistance, fast and convenient construction operation, aging resistance, non-toxic and pollution-free construction and use, no potential safety hazards, safe and convenient installation and use, labor-saving, labor-saving, time-saving and economical advantages, and It can improve the fit and reduce the amount of cement, especially in the field of civil engineering.