69results about How to "Easy to ream" patented technology

The invention discloses an ultrahigh-strength hot-rolled complex phase steel plate and steel strip with good bending and broaching performance and a manufacturing method thereof. The ultrahigh-strength hot-rolled complex phase steel plate and steel strip comprise the following components in percentage by weight: 0.07-0.14% of C, 0.1-0.4% of Si, 1.55-2.00% of Mn, less than or equal to 0.015% of P, less than or equal to 0.004% of S, 0.01-0.05% of Al and less than or equal to 0.005% of N, and further comprises at least one of alloy elements of less than or equal to 0.07% of Nb, 0.02-0.15% of Ti and 0.10-0.20% of V, at least one of alloy elements of 0.15-0.50% of Cr and 0.15-0.50% of Mo, and the balance of Fe and inevitable impurities. The ultrahigh-strength hot-rolled complex phase steel has the tensile strength of above 800 MPa, the yield strength of above 700 MPa, the cold bending performance of 0a at 180 DEG C, the broaching rate of above 50%, and the microstructure of bainite (at least 80%) and a small amount of ferrite, martensite and retained austenite, wherein the bainite is mainly lower bainite. The ultrahigh-strength hot-rolled complex phase steel can be applied to manufacture of an automobile chassis, a hanging component, a bumper and other products.

The invention provides a 780 MPa hot-rolled high-strength steel with high hole expansion ratio and a manufacturing method thereof. The 780 MPa hot-rolled high-strength steel with high hole expansion ratio comprises the following chemical components in percentage by mass: more than or equal to 0.03 percent and less than or equal to 0.07 percent of C, less than or equal to 0.2 percent of Si, more than or equal to 1.0 percent and less than or equal to 2.0 percent of Mn, less than or equal to 0.02 percent of P, less than or equal to 0.005 percent of S, more than or equal to 0.02 percent and less than or equal to 0.05 percent of Al, less than or equal to 0.005 percent of N, more than or equal to 0.08 percent and less than or equal to 0.20 percent of Ti, more than or equal to 0.15 percent and less than or equal to 0.25 percent of Mo, less than or equal to 0.003 percent of O and the balance of Fe and inevitable impurity elements, wherein Ti/Mo is more than or equal to 0.25 and less than or equal to 1.5, and (Ti-3.42N)/4+Mo/8 is more than or equal to 0.03 percent and less than or equal to 0.07 percent. The 780 MPa hot-rolled high-strength steel with high hole expansion ratio is obtained through smelting, casting, high-temperature heating, hot rolling and reeling processes, and is more than or equal to 750 MPa in yield strength, more than or equal to 780 MPa in tensile strength, more than or equal to 20 percent in extensibility, more than or equal to 70 percent in hole expansion ratio when the thickness is 3-6 mm.

The invention discloses a two-step activation preparation method of activated carbon and application thereof in a supercapacitor. The method comprises the following steps that blind coal is smashed and sieved, and an additive and a binder are added to be stirred; the mixture is added into a muffle furnace to be carbonized and then, shifted into a tubular activating oven, activated gas is introduced to be activated; diluted hydrochloric acid is used for acid pickling, filtering is performed, then, distilled water is used for washing, and a KOH solution is used for dipping; one-time activated carbon is placed into the activating oven, and protective gas is introduced to be activated; diluted hydrochloric acid is used for acid pickling, filtering is performed, then, distilled water is used for washing till pH is 7, and then drying is performed; reactivated de-ashing activated carbon is uniformly mixed with ethylene and polytetrafluoroethylene after being ground, the mixture coats foamed nickel, and after drying is performed, tabletting is performed to prepare the supercapacitor. Blind coal is adopted as a raw material, reaction conditions are mild, on the basis of the conventional activated carbon production technology, reactivation and de-ashing are performed, the synthesis cost is greatly lowered, and the huge application and popularization potential is achieved in the field of activated carbon for the high-performance supercapacitor.

The invention relates to an energy-contained shaped charge cover with micro-nano thermite as a material. The shaped charge cover is formed by mixing and pressing raw materials including, by mass percent, 15% to 35% of aluminum powder, 55% to 80% of metallic oxides, 1% to 5% of dicyclopentadienyl iron and 1% to 8% of a binding agent; the binding agent is a fluororubber and polystyrene compound system; and the energy-contained shaped charge cover is high in energy density and high in safety performance, and a reaction cannot be carried out immediately during explosive driving; however, in the penetration process, a strong chemical reaction can start, and extremely-high heat can be sent out, so that a high-temperature incandescence reaction product is generated. The energy-contained shaped charge cover can be combined with a conventional shaped charge cover in a matched manner for use, the effects of properly expanding the diameter of a shooting hole and successively setting on a fire can be achieved, and the damage or killing effect can be enhanced.

The invention discloses an injection moulded phenolic moulding plastic for a commentator. The injection moulded phenolic moulding plastic comprises the following components in parts by weight: 15-24 parts of phenolic resin, 3-8 parts of a curing agent, 1-3 parts of a curing accelerator, 25-33 parts of reinforced fibers, 0.5-2 parts of a releasing agent, 10-45 parts of inorganic filler and 1-5 parts of a flexibilizer. The phenolic moulding plastic can be used for an injection moulding machine, so that the moulding efficiency is greatly improved. The mould is not sticky, the bending strength of the moulded product reaches up to over 180Mpa, the thermal deformation temperature is greater than 240 DEG C, and the insulation resistance is greater than 1011 ohms.

The invention discloses a multifunctional reamer for geological prospecting. The reamer comprises a drill pipe, a drill bit, three spiral reamer plates and a fixing band; an impactor is fixed on the upper portion of the drill pipe, the fixing band is fixed on the lower portion, close to the drill bit, of the drill pipe, three rotating shafts are uniformly fixed on the edge of the fixing band, each spiral reamer plate is rotatably connected with the fixing band through the corresponding rotating shaft, the portions, close to the fixing band, of the upper portion and the lower portion of the internal surface of each spiral reamer plate are connected with the drill pipe through telescopic cross rods, a compression spring is installed in each telescopic cross rod, protruding blocks are uniformly welded to the outer surface of each spiral reamer plate, and a dust cover is rotatably connected to the portion, above the impactor, of the drill pipe through a thread. According to the multifunctional reamer for geological prospecting, the structure is simple, the reaming effect is rapid and significant, time and labor are saved, the functions of achieving reaming and discharging mud and gravel to prevent blocking and dust are achieved simultaneously, and the multifunctional reamer is worthy of popularization.

The present invention discloses a high-density graphite battery negative electrode material and a preparation method thereof. The graphite battery negative electrode material comprises the following raw materials: graphite carbon material supported modified quartz sand and a graphite carbon material, wherein a mass ratio of the graphite carbon material supported modified quartz sand to the graphite carbon material is 1:20-25. The preparation steps comprise: preparing modified quartz sand and graphite carbon material supported modified quartz sand, and adopting the graphite carbon material supported modified quartz sand and a graphite carbon material as raw materials to prepare the graphite battery negative electrode material. According to the present invention, the first discharge capacity is not less than 450 mAh/g (the irreversible capacity is less than 15 mAh/g), the first charge and discharge efficiency is more than 97.0%, and more than 90% of the first capacity is still retained after cycle 500 times; and the graphite battery negative electrode material has advantages of high capacitance, low irreversible capacity, stable cycle performance, high yield and simple process, and has broad application prospects in the applications in lithium-ion batteries and other negative electrode materials.

Disclosed is a reaming drilling tool. The reaming drilling tool comprises a hollow tube body, an enlarged cutting wing, a first cutting wing, a second cutting wing, multiple groups of stirring blades, and wear-resisting plates, the stirring blades are arranged in the outer wall of the hollow tube in an up-and-down spaced mode, and an included angle of 90 degrees is formed between the two relative groups in the radial direction; the first cutting wing and the second cutting wing are both in a two-head form and arranged on the outer wall of the hollow tube body in a radial mode around the hollow tube body, and an included angle of a certain angles is formed in the radial direction of the hollow tube body; the wear-resisting plates are fixedly arranged on the stirring blades, the enlarging cutting wing, the first cutting wing, the second cutting wing and the free end arc surface which has the same axis with the hollow tube body respectively; an included angle of a certain degree is formed between a first wing blade and a second wing blade in the radial direction of the tube body of a drilling tool; an enlarged cutter body, a first cutter body and a second cutter body are made of cemented carbide blocks. The reaming drilling tool has the advantages that the reaming is simple, the strength of the cutter bodies is high, the wear resistance of spiral blades is high, the drilling capacity is high and the stirring is sufficient, and therefore the drilling efficiency and construction quality are effectively improved.

The invention discloses a simple hand-operated puncher and relates to the technical field of portable drilling machines. The simple hand-operated puncher comprises a drill rod and a drill bit and is characterized in that the middle of the drill rod is provided with a U-shaped rocking arm; the rocking arm is provided with a sleeve; one end of the drill rod is provided with a chuck, the drill bit is fixedly connected with the drill rod by virtue of the chuck; and the other end of the drill rod is provided with a grab handle. The simple hand-operated puncher is simple in structure, convenient to carry and use, and convenient in bit replacement, especially can be used for conveniently and easily punching and broaching an ammeter box and a wall under the condition of no power supply in the power construction process, is rapid and accurate, and can be used for greatly shortening the installation and fixation time of the ammeter box and improving the overall working efficiency; and the chuck is convenient to use, and the drill bit can be firmly chucked.

The invention discloses a boring cutter automatic feeding mechanism, which comprises a fixed frame, the inside of the fixed frame is slidably connected with a cross bar, both ends of the cross bar are provided with sliders, and the inner walls of both sides of the fixed frame are provided with A chute, the slider is slidably connected in the chute, a first motor is fixed on the outer wall of one side of the fixed frame by screws, the output shaft of the first motor is connected with a threaded rod, and the threaded rod is rotatably connected in a chute, and the thread The rod is threadedly connected with the slider in the chute, the top side wall of the cross bar is equipped with a rack, the outside of the cross bar is sleeved with a movable frame, and a second motor is fixed on one side wall of the movable frame by screws. The output shafts of the two electric motors are connected with gears, and the gears are located inside the movable frame. The invention can realize left and right forward and backward movement, can realize the adjustment of processing angle, is convenient for processing round holes or arcs of different sizes, does not need to repeatedly adjust the position of the object to be processed, and has high processing efficiency.

A broaching drilling tool comprises a hollow pipe body, an enlarging cutting wing, a second cutting wing, a plurality of stirring blades and wear-resisting plates; the multiple stirring blades are arranged on the outer wall of the hollow pipe body in a vertically-spaced mode, and every two opposite stirring blades form an inclined angle of 90 degrees in the radial direction; the second cutting wing is in a double-head shape and arranged on the outer wall of the hollow pipe body in the mode that the hollow pipe body is enclosed in a radial mode, and an inclined angle of a certain degree is formed in the radial direction of the second cutting wing; the wear-resisting plates are fixedly installed on the free end arc surfaces, which are with the same axle center as the hollow pipe body, of the stirring blades, the enlarging cutting wing and the second cutting wing correspondingly; and second wing pieces from an inclined angle of a certain degree in the radial direction of a drilling tool pipe body, and an enlarging knife body and a second cutting knife body are each made of hard alloy blocks. The broaching drilling tool has the characteristics of being easy and convenient to broach, high in cutting knife strength and spiral piece wear-resisting property, large in drilling and excavating capacity, sufficient in stirring and the like; and drilling and excavating efficiency and the construction quality are effectively improved.

The invention relates to a large screw hole reaming device, in particular to a reaming machine. A motor is used for providing power; a belt is connected with a worm; a worm wheel is used for providing transmission to drive a reamer bar; a lead screw is arranged in the reamer bar; and a Huff clip, a planet gear, a transmission nut, a plane thrust bearing and a hand wheel are arranged on the reamer bar. The reaming machine is provided with compact transmission and feeding components which are convenient for the drilling and reaming operations in the narrow space, and has two working modes of electric operation and manual operation, thereby having high efficiency and easy control of precision, reducing the construction period and improving the economic benefit. Meanwhile, each of the power, transmission and feeding components utilizes a dismountable connection, thereby being convenient for the transport, assembly and disassembly of the device and greatly reducing the labor intensity of workers.

A method of reinforcing the bone in an acetabulum for receiving a prosthetic acetabular implant includes preparing a surface of the acetabulum to receive an acetabular implant. At least one porous generally cylindrical bone reinforcement element is provided. At least one bore is drilled in an area of the acetabulum receiving the prosthetic acetabular implant for receiving at least one and preferably more reinforcement elements in the form of cylindrical pilings. The cylindrical porous bone reinforcement element is inserted in the bore such that an exposed surface of the porous bone reinforcement element is adjacent the surface of the acetabulum. The acetabular implant is then implanted with an outer surface of the acetabular implant supported by the reinforcement members.

The invention belongs to the technical field of hot continuous rolling plate strips, and particularly relates to bainite-based wear-resistant steel and a production method thereof. The technical problem to be solved by the invention is to provide the bainite-based wear-resistant steel which comprises the following chemical components in percentage by mass: 0.15 to 0.25 percent of C, 0.35 to 0.50 percent of Ti, 0 to 0.05 percent of Nb, 0 to 0.5 percent of Cr, 0.1 to 0.3 percent of Mo and the balance of Fe and inevitable impurities. According to the bainite-based wear-resistant steel and the production method thereof provided by the invention, micron-nano double-scale Ti (C, N) is separated out to serve as a hard phase, so that the wear-resistant service life is prolonged; and through controlling the matrix structure to be granular bainite and a small amount of acicular ferrite, the material is ensured to have an excellent performance.

The invention discloses drilling equipment with a hole expanding function. The drilling equipment comprises a machine body, a clamping cavity is formed in the machine body, supporting bases are fixedly arranged on the left side and the right side of the clamping cavity correspondingly, supporting columns are slidably connected in the supporting bases, supporting springs are connected between the supporting columns and the supporting bases, a main body is fixedly arranged between the supporting columns, and a clamping device for clamping a workpiece is arranged in the machine body. According tothe drilling equipment, the accuracy of drilling in position and vertical direction can be guaranteed, hole expanding machining can be carried out during drilling, tool replacement is avoided, and the machining speed and the machining efficiency are improved.

The invention discloses a multifunctional drill bit and belongs to the field of drill bit rock drilling and reaming tools. The multifunctional drill bit comprises a columnar connecting body connectedwith a drill rod, a conical impact surface is arranged at one end of the columnar connecting body, alloy tooth mounting holes are formed in the conical impact surface, and a circular-arc-shaped notchis formed in the side wall of the columnar connecting body. The multifunctional drill bit is characterized in that clamping pin holes are formed in the inner walls of the alloy tooth mounting holes; clamping pins in clearance fit with the clamping pin holes are arranged in the clamping pin holes; alloy teeth are mounted in the alloy tooth mounting holes; clamping openings corresponding to the clamping pin holes are formed in the side walls of the alloy teeth; and the columnar connecting body is sleeved with a detachable reaming device. According to the multifunctional drill bit, the advantagesof existing drill bit equipment can be fully utilized while metal teeth are prevented from falling off, the utilizing value of an existing drill bit is explored, efficient reaming can be conducted, and the production cost is saved.

The invention belongs to the field of biomass utilization, and discloses a method for preparing nitrogen-doped carbon and a nitrogen-containing heterocyclic ring by using plasma. The method comprisesthe following steps: S1, mixing biomass with an activator; S2, reacting under the conditions of ammonia gas and plasma to obtain pyrolysis volatile matter; S3, carrying out a cyclization upgrading reaction on the pyrolysis volatile matter under the action of a catalyst to obtain a solid product and a nitrogen-containing heterocyclic ring volatile matter; and S4, cooling the nitrogen-containing heterocyclic ring volatile matter to obtain liquid oil enriched with the nitrogen-containing heterocyclic ring product, and carrying out acid washing, water washing and drying treatment on the solid product to obtain the porous nitrogen-doped carbon material. Plasma is introduced in the reaction process, the ammonia gas is promoted to be decomposed into nitrogen-containing free radical groups by utilizing plasmas, the reaction of the free radical groups and a biomass pyrolysis intermediate is enhanced, and the synergistic effect of the free radical groups and the activator is enhanced, so that the formation of the nitrogen-containing product is promoted, and the purpose of preparing the high-selectivity nitrogen-containing heterocyclic ring and the high-performance nitrogen-doped carbon by utilizing biomass is achieved.

The invention relates to the technical field of active coke, in particular to an active coke preparation method and preparation device. The active coke with large specific pore volume, high specific surface area and good adsorption performance can be obtained. The active coke preparation method includes the steps: 1) performing gasification reaction or pyrolysis reaction on pulverized coal to obtain semi-coke with preset structural parameters; 2) performing activating reaction of the semi-coke and activators to obtain the active coke. The preset structural parameters indicate that the carbon content of the semi-coke is larger than or equal to 80%, the specific pore volume is larger than or equal to 0.2cm<3>/g, and granularity is smaller than or equal to 250 micrometers. The active coke preparation method is used for preparing the active coke.

The invention relates to a drum drill for drilling an anchor rod, and belongs to the technical field of a foundation fixation building in soil layer drilling. The drum drill comprises a drum drill body and a drill bit, wherein a first through hole which passes through in the axial direction is formed in the drum drill body; a sliding casing is arranged inside the first through hole; a hole expanding blade is arranged on the casing; a base is manufactured at one end of the casing; a second through hole is formed in the base; an opening is formed in a side wall of the casing. During use, the casing slides and is completely fed into the first through hole, one end of the casing is in sealed meshing with the other end of the drum drill body, then the casing and the drum drill body can rotate synchronously; meanwhile water flows through the second through hole and the first through hole in sequence and is ejected out from the first through hole; when the base and the opening completely slide off the first through hole, the hole expansion blade extends outside the sleeve from the opening, and at the same time the water flows through the second through hole and the opening in sequence and is ejected out from the opening. The drum drill is simple in overall structure and reliable in action, and drilling, hole expansion, grouting and drill bit withdrawing can be completed at one time.

The invention belongs to the technical field of machining of seamless metal rings, and particularly discloses a rolling ring production process. The rolling ring production process comprises the following steps that blanks are weighed, specifically, the blanks and a blank loading device are prepared, and the blanks are sequentially weighed; heat treatment is conducted, specifically, a blank heating device is prepared, and the blank is placed in the blank heating device for heating; upsetting and slotting are conducted, specifically, a blank upsetting device is prepared, and and the blank is put into the blank upsetting device for upsetting and slotting; punching is conducted, specifically, a blank punching device is prepared, and the blank is put into the blank punching device to be punched; broaching is conducted, specifically, a ring rolling machine is prepared, and the blank is put into the ring rolling machine for broaching; and collecting is conducted, specifically, a ring rollingmachine conveying device is prepared, and the blank is put into the ring rolling machine conveying device for recycling. The invention aims to provide a ring rolling production process to solve the problem of difficult hole opening caused by large blank thickness.

The invention belongs to a method for preparing sulfur-oxygen co-doped porous carbon from paper, particularly waste paper. The sulfur doping content of a porous carbon material is regulated and controlled through hydrothermal synthesis of a sulfuric acid solution by utilizing hydrothermal synthesis and high-temperature pyrolysis technologies on the basis of inherent structural characteristics of the paper; and the S and O co-doped porous carbon material is prepared through KOH assisted pyrolysis. The sulfur element doping amount of the prepared porous carbon material can be regulated to 0.3 at%-4at%, and the material presents a reticular hierarchical pore structure. A symmetrical capacitor assembled by taking the material as an electrode has the specific capacitance retention rate of 96% after 10000 times of circulation, has good electric circulation stability, and is worthy of market popularization and application.