41results about How to "Reduce the annealing process" patented technology

A method of manufacturing a transistor according to some embodiments includes sequentially forming a dummy gate oxide layer and a dummy gate electrode on an active region of a semiconductor substrate, ion-implanting a first conductive impurity into source/drain regions to form first impurity regions, and ion-implanting the first conductive impurity to form second impurity regions that are overlapped by the first impurity regions. The method includes forming a pad polysilicon layer on the source/drain regions, sequentially removing the pad polysilicon layer and the dummy gate electrode from a gate region of the semiconductor substrate, annealing the semiconductor substrate, and ion-implanting a second conductive impurity to form a third impurity region in the gate region. The method includes removing the dummy gate oxide layer, forming a gate insulation layer, and forming a gate electrode on the gate region.

The invention relates to a preparation method for a high-magnesium aluminum alloy O-state plate of 5XXX series. The method comprises the steps of smelting, refining, casting, soaking, saw cutting, surface milling, preheating, hot rolling, cross-cutting and uncoiling or edge trimming, saw cutting, packaging and warehousing and the like. According to the preparation method, the high-magnesium aluminum alloy O-state plate of the 5XXX series is prepared through a new production process, under the condition that the performance and structure stability of high-magnesium aluminum alloy are maintained, the production procedures can be reduced, and surface quality defects of the high-magnesium aluminum alloy can be reduced; products can be directly produced after the aluminum alloy plate with the thickness being equal to or larger than 3 mm is subjected to hot rolling, the product yield can be substantially increased, and production efficiency can be improved sufficiently.

The present invention provides a forming method of shaped wire material and its equipment. Said equipment has a forming unit formed from combination of non-driven front part 4 square roll turks heads and power-driven rear part 4 square roll turks heads, and the rear portion of the forming unit is equipped with successively and straight-line arranged non-driven 4 square roll turks heads with finishing roll line. The forming roll of power-driven turks head has the diameter which is above 70 times greater than height of edge of formed material, and the tension beared by formed material between the above-mentioned non-driven turks heads and power-driven turks head can be controlled below 300N. Said invention can high-effectively and high-accurately produce shaped wire material.

The invention relates to the field of special-shaped hollow current conducting plates for copper electrolysis technique and especially relates to a continuous production technique of special-shaped hollow current conducting plates for electrolysis, and the continuous production technique comprises: upward continuous casting, continuously extrusion forming, precise drawing and determining the dimension and sawing to obtain a finished product. The current continuous extruding mainframe equipment is reformed, and the invention provides a continuous production technique of deformed hollow current conducting plates for electrolysis, which has short procedure, little investment, high efficiency and energy conservation is provided. The special-shaped hollow current conducting plate for electrolysis produced by the technique has the advantages of high yield, dense product tissue, small crystalline grain, excellent metallographic structure and excellent mechanical property and electrical conductivity, and the forming precision required by the copper electrolysis technique is satisfied; and the good drapability and reliable conductive contact of cathode plates and anode plates are guaranteed. The invention can solve such problems in the prior art as large raw material inventory, complex production technique procedures and difficult control of product quality, etc.

The invention relates to an aluminum alloy plate strip, in particular to a production method of a 3005-H16 aluminum alloy plate strip, and aims at solving the technical problems that the requirement for annealing temperature uniformity is relatively high, the requirement for annealing furnace temperature control is relatively high, the performance, especially the yield strength, is unstable duringthe intermediate annealing process of the aluminum alloy plate strips, and surface defects such as oil patches and the like are easy to generate to cause waste products if cold rolling strips are notspecially cleaned in the prior art. The method comprises the following steps of: carrying out casting, wherein the ingot casting obtained through the casting comprises the following chemical components in mass percent: less than or equal to 0.5% of Si, 0.4-0.6% of Fe, less than or equal to 0.2% of Cu, less than or equal to 0.05% of each of other impurities, less than or equal to 0.10% of a sum ofthe other impurities and the balance of Al, a smelting temperature is 740-760 DE C, a refining temperature is 730-750 DEG C, a casting temperature is 685-700 DEG C, and a casting speed is 50-60 mm/min; and carrying out milling, heating, hot rolling and cold rolling to obtain the finished 3005-H16 aluminum alloy plate strip.

The invention discloses a nickel-saving stainless steel differential temperature drawing and forming device and method. The device comprises a heating device used for heating a female die and an edge pressing ring, a cavity is formed in a male die, and an air cooling device used for cooling a male die body is arranged in the cavity. By heating the female die and the edge pressing ring, the temperature of the female die and the edge pressing ring is kept between 100 DEG C and 150 DEG C, stability of a nickel-saving stainless steel flange deformation area is improved, martensitic transformation is not generated in the plastic deformation process, and the material ageing cracking defect is overcome. Meanwhile, the male die is cooled, the temperature of the male die is kept below 40 DEG C, tensile strength of a dangerous section of a drawing part is improved, and primary deformation capacity of materials is improved. The device and method reduce ageing cracking sensitivity of nickel-saving stainless steel, the conventional annealing procedure for preventing cracking of the drawing part is omitted, the primary drawing deformation limit of materials is improved, and forming passes are reduced.

The invention relates to an efficient preparation method for a skutterudite thermoelectric material through laser. The efficient preparation method comprises the steps that 1, according to the chemical formula of the skutterudite thermoelectric material, pure metal powder is weighed to serve as raw material powder and is put into a graphite matrix after being uniformly mixed; 2, the graphite matrix loaded with the raw material powder is put into an inert atmosphere, and the raw material powder is heated through the laser melting technology, melted along with movement of laser spots and then condensed, so that a cast ingot is obtained; and 3, the cast ingot prepared in the step 2 is ground into powder, the cast ingot powder is sintered through spark plasmas, and thus the skutterudite thermoelectric material is obtained. According to the efficient preparation method for the skutterudite thermoelectric material through the laser, the local powder is heated through the high-energy laser, rapid melting is achieved, and the loss of Sb phases is reduced; then, small-capacity melt is rapidly condensed, and the segregation size is decreased; and subsequently, the SPS short-time heat treatment process is combined, so that efficient preparation of the skutterudite thermoelectric material is achieved.

The invention discloses a 5182-H36 aluminum alloy sheet material for a luggage compartment door plate of a new energy passenger car. The 5182-H36 aluminum alloy sheet material comprises the followingcomponents in percentage by mass: 0.05 to 0.10 percent of Si, 0.10 to 0.20 percent of Fe, 0.01 to 0.10 percent of Cu, 0.4 to 0.8 percent of Mn, 4.6 to 5.2 percent of Mg, 0.07 to 0.12 percent of Cr, 0.01 to 0.20 percent of Zn, 0.01 to 0.05 percent of Ti and the balance of Al. A preparation process comprises the following steps: smelting, filtering a melt, casting, carrying out saw cutting on a milling surface, heating a casting ingot, carrying out hot rolling, carrying out cold rolling and carrying out stabilized annealing. The 5182-H36 aluminum alloy sheet material for the luggage compartmentdoor plate of the new energy passenger car, prepared by a preparation method, has good properties including low density, corrosion resistance, high strength, good bending performance and the like, andcan meet requirements of the luggage compartment door plate of the new energy passenger car on light weight and high comprehensive performance of production materials.

The invention relates to a production method of a low-cost high-flatness 650 MPa-grade steel plate, and belongs to the technical field of metallurgy plate production. The method comprises the procedures of hot rolling, acid rolling, degreasing and straightening; and in the straightening procedure, a withdrawal and straightening machine and a straightening machine are adopted for straightening, the withdrawal and straightening elongation rate is 0.5-0.9%, and the straightening elongation rate is 0.3-0.5%. According to the method, the common wave shape and warping problems of a rolled hard coil can be effectively avoided, and the surface flatness of a final product can meet the surface quality requirement of a continuous annealing cold-rolled plate; the actually measured unevenness of the product is less than or equal to 2mm/m; and compared with an annealed coil, the alloy cost is reduced, the annealing procedure is omitted, and the product alloy cost and the procedure cost are effectively reduced.

The invention provides a fingerprint-resistant liquid and a fingerprint-resistant cold hard roll thereof. The fingerprint-resistant liquid comprises 30-70% of resin, 0.1-5% of inorganic salt, 0.1-1% of nano silicon dioxide, 1-4% of single crystal solid nano silicon dioxide fibers, 0.1-1% of nano copper particles, 0.1-0.5% of a silane coupling agent, 0.1-5% of a surfactant and the balance of a solvent. The preparation method of the fingerprint-resistant cold hard roll comprises the following steps: 1) fully mixing resin, nano silicon dioxide, nano silicon dioxide fibers, nano copper particles, a surfactant, inorganic salt, a silane coupling agent and a solvent, and carrying out ball milling for 24 hours to obtain a fingerprint-resistant solution; 2) rolling the ultrathin hot-rolled coil by 10-40% of deformation to obtain a non-galvanized cold hard coil with the thickness of 0.5-3mm; (3) coating the fingerprint-resistant liquid on the surface of the cold hard coil through a coil bar coating roller; and (4) the coated cold hard roll steel plate is fed into a curing room, and a finished product fingerprint-resistant cold hard roll is obtained after curing. The fingerprint-resistant cold hard roll prepared by the invention has excellent mechanical properties, conductivity and corrosion resistance, also has antiviral property, and is suitable for further popularization and application.

The invention provides a preparation method of a stainless steel wire for netting. The preparation method comprises the following steps that the pass deformation in a metal wire drawing procedure is reasonably arranged, the procedures of rough drawing, primary annealing, fine drawing and secondary annealing are carried out, a water-based lubricant is adopted in the last pass in fine drawing, and a lubricant on the surface of a semi-finished product wire is removed. The purpose that the stainless steel wire for netting can be obtained through two times of drawing-annealing is achieved, the produced stainless steel wire is smooth and clean in surface, it is guaranteed that the physical and chemical properties of the wire rod are flush with those of other processes while the technological process is shortened, the using effect is stable, the production process is shortened, economic benefits are good, and the stainless steel wire is suitable for industrial production and use.