53results about How to "Guaranteed final performance" patented technology

The invention discloses a resource-saving Q345 low-alloy series steel plate and a production method thereof. The steel plate comprises the following chemical components in percent by weight: 0.15 to 0.18 percent of C, 0.15 to 0.50 percent of Si, 1.10 to 1.25 percent of Mn, not more than 0.030 percent of P, not more than 0.035 percent of S, 0 to 0.045 percent of Alt, not more than 0.44 percent of carbon equivalent, and the balance of Fe and inevitable impurities. The production process of the steel plate comprises 150 t converter, LF external refining, slab continuous casting, slab heating, steckel mill controlled rolling, controlled cooling, thermal straightening, cooling, shearing and mark warehousing. The resource-saving Q345 low-alloy series steel plate, produced by the production method, has the yield strength of 360 to 420 MPa, the tensile strength of 500 to 550 MPa, and the elongation of 24 to 32%, and acicular ferrite with the thickness of 3 to 6 mm, polygonal ferrite, degenerate perlite and a small amount of granular bainite are arranged on the surface layer of the steel plate.

The invention discloses a high-strength high-heat-conductivity 6-series aluminum alloy strip and a preparation method thereof. The high-strength high-heat-conductivity 6-series aluminum alloy strip comprises, by mass, 0.20-0.55% of Si, 0.03-0.08% of Fe, 0.01-0.10% of Cu, 0.01-0.02% of Mn, 0.40-0.80% of Mg, 0.01-0.10%fo Cr, 0.01-0.02% of Zn, 0.01-0.03% of Ti, and the balance Al and inevitable impurities, wherein aluminum ingots, aluminum intermediate alloy ingots, magnesium ingots and manganese additives serve as raw materials, and the high-strength high-heat-conductivity 6-series aluminum alloy strip is prepared through the steps of melting, casting, soaking, hot rolling, cold rolling, solid treatment, stretch straightening, ageing treatment and the like. By controlling alloy chemical components and optimizing technological parameters, the prepared 6-series aluminum alloy strip has the advantages of high surface quality, smooth strip shape, high strength, good in formability and high heat conduction performance, and the overseas technical monopoly in this aspect is broken.

The invention belongs to the technical field of cutter manufacturing, and particularly relates to a cutting edge treatment method. In order to solve the problem that when imported high-quality steel is adopted to manufacture a cutter so as to improve the cutting edge performance of the cutter at present, the manufacturing cost of the cutter is high, the invention discloses the cutting edge treatment method. The cutting edge treatment method specifically comprises the following steps that S1, manufacturing preparation of a cutter is carried out, and the cutting edge part is cleaned; S2, a welding and laser cladding combined mode is adopted for machining a cutting edge strengthened layer; and S3, the cutting edge strengthened layer is coped, and final cutting edges are obtained. When the cutting edge treatment method is adopted for cutting edge treatment, not only can the performance of the cutting edges be greatly improved, the use effect of the cutter is guaranteed, but also the requirements for cutter body materials can be reduced, and the cost of the cutter is reduced.

The invention relates to a synthesis-gas carbon-based catalyst preparation method by reforming methane and carbon dioxide. The method comprises the following steps that 1 coal with the grain size ranging from 60-80 meshes is liquefied directly, the residue is mixed with a composite modifying agent according to a mass ratio of 1:1-3, and the mixture is grinded uniformly; the composite modifying agent comprises, by weight, 90-98% of alkali and 2-20% of nitrate; 2 the obtained mixture grinded uniformly is heated in inert atmosphere to conduct carbonizing treatment; 3 the mixture in which carbonizing treatment is conducted is cooled and washed to be neutral; 4 the mixture washed to be neutral is dried, and the carbon-based catalyst is obtained. According to the synthesis-gas carbon-based catalyst preparation method by reforming the methane and the carbon dioxide, the residue CLR of shenhua coal being liquefied directly is used as raw material, the carbon-based catalyst is obtained through the carbonizing treatment on the residue, the main by-product produced in the direct coal liquefaction process is utilized effectively, the preparation method is simple, and the prepared catalyst is large in specific surface area; the catalyst has a good catalytic activity on the reforming reaction of the methane and the carbon dioxide.

The invention relates to a railway through ground wire. The ground wire comprises a cable core and a copper alloy protective sleeve which covers the outer layer of the cable core and is 0.9-10mm thick. The invention additionally provides a preparation device of a railway through ground wire and a corresponding preparation method, the copper alloy protective sleeve is formed by pouring a copper alloy solution to an outer layer of the cable core to crystallize and condense, the thickness of the copper alloy protective sleeve can be realized by changing the pipe diameter of a lower guide channel of a crystallizer, and the copper alloy molten solution in the lower guide channel can be controlled to grow from inside to outside the surface of the cable core by a heating induction coil and circulating cooling water channel, so as to obtain the railway through ground wire which has reliable connection on a separating place between the protective sleeve and the cable core and uniform metallographic structures of the protective sleeve.

The invention relates to a production process for a barrel-making hot dip galvanized steel strip, and belongs to the technical field of galvanized steel strips in the metallurgical industry. According to the technical scheme, the barrel-making hot dip galvanized steel strip consists of the following chemical components in percentage by mass: less than or equal to 0.07% of C, less than or equal to 0.025% of Si, less than or equal to 0.25% of Mn, less than or equal to 0.025% of P, less than or equal to 0.020% of S, 0.015-0.065% of Als, less than or equal to 30 ppm of T[O], less than or equal to 30 ppm of T[N], the balance iron and inevitable impurities. The production process comprises the following process steps: controlling the mass percentage of the components at a converter smelting end-point as follows: 0.03-0.07% of C, less than or equal to 0.020% of P, and less than or equal to 0.015% of S; (2) controlling a finish rolling temperature of hot rolling to be 885-905 DEG C, and controlling a coiling temperature to be 685-725 DEG C; (3) controlling a cold-rolling total reduction rate to be 70%-85%; and (4) controlling a plate temperature in a continuous annealing furnace to be 670-700 DEG C. The production process has the beneficial effects of reducing the production cost, improving the product performances and meeting using requirements.

The invention discloses a dielectric isolation material taking thermosetting resin as a matrix and a preparation method of the dielectric isolation material, and belongs to the technical field of electrical insulation composite materials. According to the invention, the dielectric isolation material is prepared by dispersing a static dissipative agent in the thermosetting resin matrix, dipping continuous fibers in a glue solution and carrying out defoaming, low-temperature pre-curing, high-temperature curing and other processes. The resistivity of the dielectric isolation material can reach 104-1010 omega.cm, and the dielectric isolation material has the mechanical properties of high tensile strength and high tensile modulus and can be applied to the field of high-temperature curing. And after 6 times of electric shock with a voltage of more than 10 kV, the performance of the material is kept unchanged. The material and preparation method thereof have the advantages of simple and feasible industrial implementation, low production cost and short curing time, has the obvious effects of static electricity conduction and strong current blocking when being used for lightning isolation and protection, and is easy to popularize and apply in general industries as a lightning protection material.

The invention relates to a multichannel KB microscope structure with a quasi-coaxial observation function. The structure comprises a plurality of reflecting mirror sets which are sequentially arrangedin the optical axis direction, wherein each reflecting mirror set is composed of a first reflecting mirror arranged in the meridian direction and a second reflecting mirror arranged in the sagittal direction, so that a plurality of independent imaging channels are formed. Compared with the prior art, the structure of the invention has the advantages of high coaxiality, reduction of observation visual angle difference, independent imaging, consideration of different X-ray energy requirements and the like. According to the invention, X-ray reflection is realized in a large energy span especially for the research of ICF (Inertial Constraint Fusion), so that the observation precision of ICF physical experiments can be effectively improved, and the difficulties of fusion ignition related research at home and abroad are solved.

The invention relates to a railway through earth line. The railway through earth line comprise a cable core and a copper alloy protective sleeve coating the outer layer of the cable core, wherein the thickness of the copper alloy protective sleeve is 0.9mm-10mm. The invention further provides a preparation device and a preparation method for the railway through earth line, wherein the copper alloy protective sleeve is formed by pouring a copper alloy solution to the outer layer of the cable core for being crystallized and condensed; the thickness of the copper alloy protective sleeve can be realized by changing the tube diameter of a crystallization channel of a crystallizer; the copper alloy solution in a channel is guided to directionally grow from the inside to the outside on the surface of the cable core under the control through a heating induction coil and a circulating cooling water path to obtain the railway through earth line which is reliable in combining the protective sleeve with the cable core boundary and uniform in protective sleeve crystal structure.

The invention relates to a production process of resin pipe fittings, in particular to a one-time injection molding process and equipment for chlorinated polyvinyl chloride elbow pipe fittings. The process includes batching, drying, injection molding, pressure holding, and mold opening process. During the injection molding process, the heating part of the barrel of the injection molding machine is divided into seven sections, and the temperature range of each section is 150-155°C and 168-173°C. , 162~167℃, 160~165℃, 155~160℃, 150~155℃, 145~150℃, the mold temperature is controlled between 60~70℃; the injection pressure during injection molding is divided into three sections, respectively 58MPa , 65MPa and 80MPa. The pitch of the injection molding machine screw used in the method is equal to the diameter of the screw, the feeding section accounts for 25% of the total length, the compression section accounts for 50% of the total length, and the homogenization section accounts for 25% of the total length. The invention realizes one-time injection molding of DN400 large elbow pipe fittings through the improvement of process and equipment.

The invention relates to a feed control device for PE fuel gas pipe production. The feed control device comprises an injection molding machine and a suction machine; a feed port of the suction machine communicates with an injection molding particle charging barrel, and a discharge port of the suction machine is fixedly arranged above a feed bin of the injection molding machine; a material storage bin is arranged on the suction machine; the bottom of the material storage bin is provided with a baffle plate; a weight sensor is mounted on the baffle plate and is connected with a PLC control cabinet through a wire; the PLC control cabinet is connected with a driving component of the baffle plate through a wire to realize opening and closing of the baffle plate. Through reasonable assembling, the material storage bin is arranged on the suction machine, weight information can be immediately transmitted to the PLC control cabinet by additionally arranging the baffle plate and a weight acquiring device, the PLC control cabinet is used for driving the opening and closing of the baffle plate through comparison and computation to finish blanking; standardized and unified feeding amount can be uniformly represented each time just by enabling the material on the baffle plate to achieve a preset release amount, and the final effect of injection molding is guaranteed.

The invention relates to a lower limb rehabilitation training apparatus and a use method thereof. A spring fixed sleeve is fixedly arranged on a base below a bottom connecting plate, a vertical springis arranged in the spring fixed sleeve in a sleeving manner, the bottom of the vertical spring is fixedly connected with the internal of the bottom of the spring fixed sleeve, the top of the verticalspring is fixedly connected with the bottom of the bottom connecting plate, a horizontal spring mounting ring is fixedly arranged at the inner side of a foot fixer, and a horizontal spring is arranged on the horizontal spring mounting ring. Even though the patient does have walking capacity, the patient still can enter the sitting posture training state as early as possible, thereby implementingthe lower limb training in stages and gradients; and meanwhile, the training apparatus is in favor of the integral combined training of the legs and the pelvis of the patient, the comprehensive lowerlimb combined training of the sitting posture position is realized by adopting a combined training way of the sitting posture leg-bending opening-closing training and the sitting posture leg-unbendingstep-reaching training, and the combined effect of the lower limb training is greatly improved.

The invention relates to a production process of resin pipe fittings, in particular to a one-time injection molding process and equipment for chlorinated polyvinyl chloride tee pipe fittings. The process includes batching, drying, injection molding, pressure holding, and mold opening process. During the injection molding process, the heating part of the barrel of the injection molding machine is divided into seven sections, and the temperature range of each section is 150-155°C and 168-173°C. , 162~167℃, 160~165℃, 155~160℃, 150~155℃, 145~150℃, the mold temperature is controlled between 60~70℃; the injection pressure during injection molding is divided into three sections, respectively 58MPa , 60MPa and 78MPa. The pitch of the injection molding machine screw used in the method is equal to the diameter of the screw, the feeding section accounts for 25% of the total length, the compression section accounts for 50% of the total length, and the homogenization section accounts for 25% of the total length. The invention realizes one-time injection molding of DN400 large-scale three-way pipe fittings through the improvement of process and equipment.

The invention relates to a real-time isolated point removing method, device and system for a three-dimensional scanner, computer equipment and a computer readable storage medium, and the method comprises the steps: obtaining three-dimensional point data scanned by the three-dimensional scanner in real time; updating the obtained three-dimensional point data to a temporary display list, and openingthe display attribute of the temporary display list; carrying out isolated point detection on the three-dimensional point data in the temporary display list; according to the detection result, continuously leaving the isolated point data in the temporary display list, and closing the display attribute of the temporary display list; and putting the non-isolated point data into a permanent displaylist, and opening the display attribute of the permanent display list. According to the invention, real-time isolated point removal can be realized, visual drop feeling of people is avoided, and excellent real-time point cloud impression is brought to scanners while the final effect is ensured.

The invention discloses a forging forming technology for a large-size high-intensity and heat-resistant magnesium alloy thick plate and provides a forging forming technology for a magnesium alloy thick plate which is thicker than or as thick as 150mm. The forging forming technology comprises the steps of large-furnace smelting, semi-continuous casting, homogenizing annealing, variable-temperature multi-directional forging, fast forging and after-forming thermal treatment, wherein the variable-temperature multi-directional forging is executed on an oil press; before forging, the temperature of an ingot blank is preserved at 500-530 DEG C for 4-6 hours; the pressing speed is 200-400mm/min, the upsetting gate pressing amount is 30-50 percent, and the swaging gate pressing amount is 5-10 percent; the fast forging is executed on an air hammer; before fast forging, the temperature of the ingot blank is preserved at 480-500 DEG C for 2-4 hours. According to the forging forming technology, the high-temperature plasticity of a magnesium alloy is fully achieved, and the usability is obviously improved; at the temperature of 200 DEG C, the tensile strength of the thick plate in the length direction, the width direction and the height direction is higher than or equal to 330MPa, and the elongation rate is larger than or equal to 8 percent.

The invention discloses a forging process of a planet carrier, and relates to the processing technology field of the planet carrier. The forging process of the planet carrier aims at solving the technical problems that randomness in processing of a shot blasting machine is large, and unthorough oxide skin treatment of the planet carrier is easily caused. The main point of the technical scheme includes that the basic shot blasting machine is used for polishing, the surface of the planet carrier is washed through high pressure water, oxide skin adhered to the surface of the planet carrier is removed, then secondary sand blasting is performed for fine treatment, and finally high pressure airflow is used for removing chippings; and the treatment effect for the oxide skin is improved.

The invention relates to the field of textile equipment, in particular to a winding anti-deviation assembly capable of being used for yarns with different thicknesses. The winding anti-deviation assembly comprises a storage frame, the storage frame is fixedly connected with a placement mechanism and a bottom plate, the placement mechanism is provided with an adjusting mechanism, the storage frame is internally provided with the placement mechanism and a limiting mechanism, and the limiting mechanism is provided with a stretching mechanism; through the placement mechanism, the yarns of different specifications can be conveniently arranged before being wound, and the yarns of different thicknesses can be wound in cooperation with the limiting mechanism; the limiting mechanism is arranged in the storage frame, under the cooperation of the placement mechanism, a yarn can be conveniently limited through the limiting mechanism, deviation of the yarn in the winding process is avoided, and meanwhile the winding anti-deviation assembly capable of being used for the yarns with different thicknesses is suitable for winding of the yarn with different thicknesses; the stretching mechanism is arranged on the limiting mechanism, the tension in the winding process is controlled through the stretching mechanism, yarn deviation in the winding process is further avoided, and the final winding effect is guaranteed.