112results about How to "Improve pull performance" patented technology

The invention discloses a high-carbon steel wire rod low in network cementite precipitation and used for fine wire drawing and a production method of the high-carbon steel wire rod. The high-carbon steel wire rod comprises 0.79%-0.84% of C, 0.20%-0.40% of Si, 0.45%-0.55% of Mn, smaller than or equal to 0.010% of P, 0.0020%-0.010% of S, 0.0005%-0.00010% of Al, 0.0002%-0.0006% of Ti, 0.0015%-0.0025%of total oxygen and the balance Fe and inevitable impurities. The high-carbon steel wire rod is used for producing a fine steel wire with the diameter being 0.22 mm, the breaking rate of a produced steel wire cord thread is not larger than 3 times/ton, and the using requirement of a user is met.

The invention discloses a high-speed wire production method capable of controlling the same-circle mechanical property fluctuation of high-carbon steel wire rods, belonging to the technical field of roll steel. The high-speed wire production method capable of controlling the same-circle mechanical property fluctuation of the high-carbon steel wire rods comprises the following steps: controlling vibration value fluctuation of a wire discharging machine to be 2-3mm per second, controlling the wire discharging circle diameter to be in a range of 9.5-1.1m and ensuring the specific distribution of coils on a Stelmor air-cooling roller channel; controlling the initial rate of the roller channel to be 0.6-0.7m per second and controlling wire rod density of overlapping nodes and non-overlapping points; adjusting angles of Jialing baffles of a fan under the Stelmor air-cooling roller channel according to the specifications of the wire rods; controlling the angles of Jialing baffles of wire rods which are 5.5-8mm long to be 10 degrees, controlling the angles of Jialing baffles of wire rods which are 8-12mm long to be 8 degrees, and controlling the angles of Jialing baffles of wire rods which are 12-16mm to be 5 degrees; controlling phase transformation start temperature to be within 20-30 DEG C. The high-speed wire production method capable of controlling the same-circle mechanical property fluctuation of the high-carbon steel wire rods has the advantages that the same-circle property fluctuation of the wire rods is effectively alleviated, the drawing capability of the wire rods and the stability of the steel wire property are improved, the method is high in practicability and suitable for improving the quality of high-carbon steel wire rods of a high-speed wire factory; the same-circle mechanical property fluctuation of the 82B wire rods of the high-speed wire production factory is controlled to be within 40Mpa.

The invention provides a rough rolling method capable of improving a core tissue of a high-carbon steel wire and belongs to the technical field of high-wire rolled steel. The technical parameters controlled in the process are as follows: high-wire rolling is carried out on a 150mm*150mm or 160mm*160mm continuously-cast small square blank, and the temperature difference between the core and surface of a continuously-cast blank discharged from a heating furnace is controlled at 20-40 DEG C; the rolling speed of a first rack for rough rolling is controlled at 0.15-0.17m/min; the working diameter of a roll is controlled at 550-580mm, and the equivalent strain is controlled at 0.33-0.35; the rolling speed of a second rack for rough rolling is controlled at 0.2-0.22m/s, the working diameter of a roll is controlled at 530-550mm, and the equivalent strain is controlled at 0.28-0.39; the rolling speed of a third rack for rough rolling is controlled at 0.28-0.3m/s, the diameter of a roll is controlled at 600-620mm, the equivalent strain is controlled at 0.55-0.75, and the extension coefficient is controlled at 1.5-1.6. The rough rolling method is suitable for developing high-carbon steel wire varieties by use of rolling in one heat and continuously-cast small square blanks in a steel mill. The rough rolling method has the advantage of improving the comprehensive mechanical property and quality of the high-carbon steel wire.

The invention discloses a gas protection welding wire which comprises, by mass, 0.06-0.15% of C, 0.15-0.50% of Si, 0.5-2.0% of Mn, 8.5-10% of Cr, 0.4-0.8% of Ni, 0.8-1.2% of Mo, 0.10-0.30% of V, 0.02-0.08% of Nb, greater than 0 and smaller than or equal to 0.05% of Al, 0.02-0.07% of N, and the balance being iron and other inevitable impurities. In addition, the invention further discloses a manufacturing method of the gas protection welding wire, comprising the steps: (1), smelting and casting; (2), making a square billet; (3) rolling to obtain a wire rod; (4) wire rod annealing, wherein the annealing temperature is 805-835 DEG C; and (5) rolling or drawing to obtain the gas shielded welding wire. The tensile strength of deposited metal obtained by welding by the gas shielded welding wireis greater than or equal to 600 MPa, and the elongation is greater than or equal to 17 percent.

The invention discloses a biodegradable material and a preparation method thereof. The biodegradable material comprises the following raw materials in parts by weight: 10-79 parts of bio-based resin,5-45 parts of a bio-based filler, 3-20 parts of modified nano calcium carbonate, 5-15 parts of talcum powder, 5-15 parts of glass fiber powder, 6-18 parts of zinc oxide powder, 5-20 parts of a plasticizer, 1-5 parts of a lubricant, 0.5-5 parts of a biodegradation accelerator, 10-50 parts of an antistatic agent and 3-15 parts of epoxidized vegetable oil. The biodegradable material disclosed by theinvention is safe, environment-friendly and non-toxic, has complete biodegradability, relieves environmental pressure caused by large-scale use of fossil plastic, has excellent mechanical properties compared with an existing biodegradable material, and has the advantages that the temperature resistance, the wear resistance, the hydrophobicity, the creep resistance, the rigidity, the tensile property and the impact resistance are remarkably improved, and production cost is significantly reduced.

The invention provides a textile fabric shaping, production and processing device. The textile fabric shaping, production and processing device comprises a processing box, wherein a mounting frame ismounted in the processing box; and a fabric is conveyed on the mounting frame, a negative-pressure neatening mechanism, an incineration mechanism, a smoothening mechanism and a dust cleaning mechanismare separately mounted on the mounting frame in the fabric conveying direction, a rolling mechanism is installed outwards during processing, and after being subjected to singeing treatment, home textile fabrics are subjected to rotary scraping cleaning of ash incineration by using the dust cleaning mechanism before rolling; and during cleaning, rotation switching of the dust cleaning mechanism isutilized, a pressing roller is used for carrying out rolling and tensioning adjustment and smoothening treatment on the fabric to be rolled, the fabric is always smooth in a rolling process, and theproblem that the fabric has wrinkles in the rolling process after singeing is solved.

The invention relates to a novel composite underwater anti-dispersion high-strength acrylate grouting material which comprises a material A, a material B and a material C. The material A is composed of a calcium magnesium acrylate solution, deionized water, a surfactant, a calcium magnesium ion chelating agent, a cross-linking agent and an accelerant. The material B is prepared from an initiator and deionized water; the material C is prepared from superfine cement, a flocculating agent, steel slag microspheres, an active excitant and low-temperature expandable microspheres. According to the underwater anti-dispersion high-strength acrylate grouting material, the calcium-magnesium ion chelating agent is used as a retarder, so that the grouting material is green, environment-friendly, non-toxic and harmless; superfine cement is matched with a flocculating agent, so that the compressive strength and the water dispersion resistance are greatly improved, and meanwhile, heat is provided forexpansion of the low-temperature expandable microspheres; the low-temperature expandable microspheres are adopted, so that the slurry has excellent elasticity and tensile property while maintaining high compressive strength after hardening, and the elongation rate can reach 205%; and the steel slag microspheres are adopted, so that the viscosity of the slurry is sharply reduced to 8Pa. S, and thegrouting performance is excellent.

The invention discloses a plating aluminium welding wire for a carbon dioxide arc welding and a preparation method thereof; a magnesium titanium alloy layer is plated on the surface of the welding wire by a hot-dipping method. As the surface plating layer of the prepared welding wire contains metal elements such as aluminium, magnesium, titanium and the like, the welding wire can reduce splash and increases the welding quality in the premise of ensuring the electrical conductivity; in the preparation method, the hot-dipping method is adopted for cladding material and can avoid the pollution brought by about the traditional coppering technique.

The invention relates to the technical field of preparation of building waterproof materials, in particular to a preparation method of a low temperature-resistant modified asphalt waterproof coil. Thepreparation method comprises the following steps of doping self-prepared SBS (styrene-butadiene-styrene) rubber powder and base oil into asphalt, and emulsifying, so as to obtain rubber powder modified asphalt; melting and mixing the rubber powder modified asphalt, polypropylene master batch and fly ash, so as to obtain modified asphalt coating material; melting and extruding shell powder, silicagel powder and polyvinyl chloride, and cooling, so as to obtain isolation resin particles; paving the isolation resin particles on an oxidized film-coating polyester felt, and calendering, so as to obtain the waterproof coil. The preparation method has the advantages that the SBS forms a special lattice structure in the asphalt, so that the low-temperature sticking property of the waterproof coilis improved; when the modified asphalt coating material is catalyzed and oxidized, the viscosity of the asphalt coating material is improved by the carbonyl compound; after the polypropylene is addedinto the melted asphalt, the viscoelastic property of the asphalt is greatly changed under the adsorbing and swelling functions, so that the waterproof coil can maintain better viscoelastic propertyat low temperature, the tension property is also improved and the application prospect is broad.

The invention discloses a Z-shaped large-caliber plastic pipe connected through inserted electric heat fusion. The plastic pipe comprises a pipe body, a socket end, a plug end and an electric heating piece. The socket end is arranged at one end of the pipe body, and the plug end is arranged at the other end of the pipe body. The plug end comprises a first ring face and a second ring face. The diameter of the second ring face is larger than that of the first ring face. A conical transition section is arranged between the first ring face and the second ring face. The socket end comprises a third ring face and a fourth ring face, the diameter of the fourth ring face is larger than that of the third ring face, and a funnel-shaped transition section is arranged between the third ring face and the fourth ring face. The electric heating piece is arranged at the socket end and/or the plug end. The Z-shaped plastic pipe is arranged at the plastic pipe joint. Compared with butt joint heat fusion and parallel inserted electric heat fusion, fusion welding faces are not located on one section and extend to the x direction and the y direction, and the fusion welding strength is greatly improved; and the drawing performance of a pipeline system is improved, and the capability of the pipeline for resisting the surface subsidence is improved.

The invention belongs to the field of an aluminum alloy material and discloses high-strength weldable aluminum alloy. The high-strength weldable aluminum alloy comprises the following components: 0.4to 1.2 percent of Mg, 0.7 to 1.4 percent of Si, 0.2 to 0.7 percent of Mn, 0.05 to 0.2 percent of Cu, 0.1 to 0.5 percent of Zn, 0.4 to 0.6 percent of Fe, 0.05 to 0.15 percent of Cr, 0.1 to 0.3 percentof other alloy element and the balance of Al, wherein other alloy element comprises combination of Ni, V, Ti, Zr and rare earth element with the ratio of (1.2-1.4):(0.6-0.8):(2.4-2.6):(0.4-0.6):0.2; and the rare earth element comprises Ce, La and Er, and Ce account for more than 60 percent of the total amount of the rare earth element. Through improvement of the original formula, the aluminum alloy improves strength and mechanical property and can serve as aluminum alloy parts, such as an end plate and a tray, in a power battery of a new energy automobile.

The invention discloses strawberry picking apparatus. The apparatus comprises a rod body and a height adjuster; and the lower part of the rod body is connected with a direct current electrical machine, a power source button is installed above the direct current electrical machine, the upper part of the power source button is connected with the height adjuster, the top of the height adjuster is connected with a telescopic rod, the top end of the telescopic rod is fixedly connected with a fixing member, a fruit receiving box is installed on the fixing member, the top of the fruit receiving box is connected with a shearing device, a rotating disc is fixed in the middle of the shearing device, the right side of the rotating disc is connected with a second shearing component, and a first shearing component is installed at the left side of the second shearing component. According to the invention, the strawberry picking apparatus is provided with two pulleys, the pulleys are arranged in parallel and distributed at symmetrical positions around the center of the rod body, the two pulleys are respectively connected with a first pulling member and a second pulling member, and when a currentreaches the pulleys, the pulleys rotate at a high speed, so that the picking speed is accelerated, and the working efficiency is improved.

The invention relates to a green environment-friendly antibacterial high-strength wood-plastic composite board with a certain heat resistance and thermal deformation resistance, capability of keepingstrong toughness at low temperature, high heat intensity and efficient antibacterial, mould-proof and strong waterproof capacity. Waste chlorinated polyvinyl chloride plastics and waste polyvinyl chloride plastics are used for replacing raw material level chlorinated polyvinyl chloride and polyvinyl chloride, production cost can be reduced, pollution caused by original waste chlorinated polyvinylchloride plastics and waste polyvinyl chloride plastics can be reduced, or cost and time needed by degradation and recovery are greatly reduced, the polyvinyl chloride is modified by mixing and addingthe chlorinated polyvinyl chloride, and the heat resistance and various mechanical properties can be greatly enhanced. Compared with a traditional PVC (polyvinyl chloride) wood-plastic material preparation process, the preparation process has the advantages that uniform plasticizing can be achieved in a short time, and energy is saved.

The invention relates to the technical field of degradable plastics and an application of the degradable plastics, and in particular relates to a drawing process and application of the starch degradable plastics. The process comprises the following steps of 1) respectively weighing 80-99 percent by weight of starch degradable plastics, 0.5-10 percent by weight of ester compatilizers and 0.5-10 percent by weight of aids-acrylic assistants, and uniformly stirring the starch degradable plastics, the ester compatilizers and the aids-acrylic assistants at the temperature of 40-70 DEG C; 2) adding the materials which are stirred uniformly in the step 1 in a single-screw extruding machine, and extruding monofilaments or ribbon-like filaments at the temperature of 120-220 DEG C. Compared with the prior art, the drawing process of the starch degradable plastics has the advantages that the starch degradable plastics can be drawn into filaments, and the filaments are high in flexibility, high in intensity, high in tensile strength and high in mechanical performance; the processing performance of the materials can be obviously improved; the drawn filaments can be widely applied to the fields of silk ribbons, threads, nets, braids, luggage, handbag cloth or curtains and the like and have wide application.

A graphene-containing static-electricity-conducting polystyrene foaming material and a preparing method thereof are disclosed. The weight of graphene in the material is 0.4-1 wt% of the total weight of a styrene monomer and graphene before polymerization. Prepared graphene/polystyrene beads are subjected to foaming, plate pressing and molding to obtain a foam plate. The surface resistance of the foam plate is 10<6>-10<8> [omega], the antistatic requirement is met, the flame retardance grade of the foam plate can be the B1 grade, the heat conductivity decreases from original 0.039-0.042 W/(m.K) to 0.030-0.034 W/(m.K), and the drawing performance increases from original 90 KPa to 220-260 KPa.