31results about How to "Quite strong" patented technology

The invention discloses a phosphorous slag aerated concrete. The concrete is characterized by consisting of a binding material, an exciting agent, an air entraining agent and water which are mixed, wherein the binding material consists of 60 to 100 weight percent of phosphorous slag and 0 to 40 weight percent of pulverized fuel ash; the exciting agent is water glass with modulus of 1.0 to 1.6; the water glass accounts for 5 to 8 weight percent of the binding material based on the weight of Na2O; the air entraining agent is aluminum powder or simple substance silicon; the using amount of the aluminum powder is 0.1 to 0.2 weight percent of the binding material; the using amount of the simple substance silicon is 0.05 to 0.1 weight percent of the binding material; and the weight ratio of theusing amount of the water to the using amount of the binding material is 0.28 to 0.32. The phosphorous slag aerated concrete product is prepared by taking the industrial waste slag such as the phosphorous slag and the like as the binding material and mixing the phosphorous slag, the exciting agent, the air entraining agent and the water. The phosphorous slag aerated concrete has the advantages that: the preparation process is simple without vapor-pressure process, so that the equipment investment can be greatly reduced; and the product is a sealed porous structure and has the characteristics of light weight, high strength, low thermal conductivity, good thermal insulation property and the like.

The invention relates to a stainless cold-rolling strip steel containing the following components in percentage by weight: not more than 0.02 wt% of C, 0.3 to 0.80 wt% of Si, 0.2 to 0.80 wt% of Mn, not more than 0.040 wt% of P, not more than 0.15 wt% of S, 16.5 to 19.5 wt% of Cr, not more than 0.02 wt% of N, 0.2 to 0.6 wt% of Nb, 0.005 to 0.08 wt% of Al and the balance of Fe and inevitable impurities. The manufacturing method of the stainless cold-rolling strip steel comprises the following steps of: continuously casting the components into a plate blank after smelting, wherein the electromagnetic stirring is adopted in the continuous casting process so that the isometric crystal ratio of the section of the plate blank reaches above 40%; hot rolling: the plate blank is heated to 950 to 1200 DEG C, rolled into strip steel for multiple times and then coiled into a steel roll, wherein the final rolling temperature is 750 to 900 DEG C, the coiling temperature is 350 to 700 DEG C, and then the steel roll is air-cooled into the room temperature; cold rolling: the hot-rolled steel roll is firstly acid-washed, wherein the annealing temperature is 800 to 1000 DEG C, and the annealing time is 0.5 to 5.0 min; rolling for multiple times by cold rolling, wherein the overall reduction is 60% to 75%; and finally annealing the cold-rolled strip steel by acid washing, wherein the annealing temperature is 800 to 1,050 DEG C, and the annealing time is 0.5 to 3 min; and cooling the steel roll below 550 DEG C so that the high-strength strip steel is obtained.

The invention relates to a method for preparing boracic low-alloy high-speed steel rolls, which is characterized by comprising the following steps: firstly carrying out metal mold casting of the roll, wherein a roll body is made of boracic low-alloy high-speed steel, and a roll core is made of ductile cast iron; putting the roll into a heating furnace at the temperature of lower than 200 DEG C after rough machining, preserving heat for 1-3 hours, then heating to the temperature of 520-580 DEG C at the temperature rising speed of 15-25 DEG C per hour, and air cooling after heat preservation; and then, putting the roll into the heating furnace at the temperature of lower than 300 DEG C again, preserving heat for 1-2 hours, then heating to the temperature of 480-510 DEG C at the temperature rising speed of 28-40 DEG C per hour, cooling the furnace to the temperature of lower than 180 DEG C after heat preservation, and air cooling to the room temperature. The method not only has low energy consumption and a short heating processing period, but also has good use effect when being used for the heating processing of the boracic low-alloy high-speed steel roll.

The invention discloses a high-toughness zinc alloy material and a preparation method thereof. The alloy material takes zinc alloy as a substrate, and metal wire balls formed by copper wires and iron wires are distributed in the substrate, wherein the diameters of the copper wires and the iron wires are 1-2mm, the diameters of the metal wire balls are 10-15cm, the total lengths of the copper wires and the iron wires in the material are equal, and the copper wires and the iron wires account for 10-35% of the material in volume percent. The high-toughness zinc alloy material provided by the invention has stronger toughness, low production cost and a simple preparation process.

The invention discloses a heat-resistant titanium alloy material and a preparation method thereof. The material adopts a titanium alloy as a substrate and metal wire clusters formed by alloy-steel wires and iron wires are distributed in the substrate; the diameter of each alloy steel wire and the diameter of each iron wire are 1mm to 2 mm; the diameter of each metal wire cluster is 10cm to 15cm; in the material, the total length of the iron wires is twice as long as that of the alloy-steel wires; and the volume percentage of the alloy-steel wires and the iron wires in the material is 10% to 35%. The heat-resistant titanium alloy material disclosed by the invention has higher heat resistance performance, low production cost and simple preparation technology.

The invention provides a calibration lamp system for an astroobservation spectrometer. The system is characterized in that the structure of the system is as follows: a color temperature filter, a semi-transparent semi-reflection mirror, a first group of lenses, a piece of frosted glass, and a second group of lenses are successively arranged at an optical axis of a white-light lamp source. A thorium-argon hollow cathode lamp is arranged at a vertical optical axis of the semi-transparent semi-reflection mirror. A distance between the filament of the white-light lamp and the semi-transparent semi-reflection mirror is equal to a distance between the filament of the thorium-argon hollow cathode lamp and the semi-transparent semi-reflection mirror. The first group of lenses are coupled with the second group of lenses by a focal point. According to the calibration lamp system provided by the invention, two kinds of light sources are coupled to one output point perfectly; and the system is essential to the astroobservation spectrometer. When the system is in use, the light source switching becomes convenient; the light source is uniform; and the intensities of the two groups of light are equal. A box body is used as an adjusting guide rail, thereby substantially simplifying the structure. The adjusting time and the manufacturing cost are saved.

The invention provides a thin slab layer for formation of an enhanced honeycomb structure and a preparation method of the honeycomb structure. The thin slab layer for formation of the enhanced honeycomb structure and the preparation method of the honeycomb structure have the following beneficial effects: the problem that an enhanced honeycomb structure can only be manufactured by a forming method but cannot be manufactured by a tension method in the prior art is solved; a thin slab material at cell gluing positions in the forming-mode manufacturing is replaced with a strengthening layer of three cell wall width, and the position of binder line is changed between the thin slab material and the strengthening layer so as to realize tension-mode manufacturing; and materials which are not easy to form, such as aromatic polyamide paper, can be used to make the enhanced honeycomb structure, so as to expand the material application range and reduce manufacturing cost. Strength of the honeycomb structure obtained by the preparation method is similar to strength of a honeycomb structure prepared by a conventional forming method. The preparation method has high manufacturing efficiency.

The invention discloses a connection structure for welding titanium and copper by using multi-intermediate layer brazing material, which comprises a titanium base material and a copper base material. The structure of the intermediate layer includes a brazing filler metal 1 and a brazing filler metal 2. A refractory metal intermediate layer is arranged between the brazing filler metal 1 and the brazing filler metal 2, and the refractory metal intermediate layer does not melt within the brazing temperature range; the brazing filler metal 1 is located in the titanium base metal. Between the interlayer of the refractory metal and melting at the brazing temperature to realize the diffusion brazing connection; the brazing filler metal 2 is located between the interlayer of the refractory metal and the copper base material, and melts at the brazing temperature to realize the active brazing connection The brazing method comprises the following steps: pre-treatment of the surfaces to be welded of titanium base material and copper base material; pre-treatment of multi-intermediate layer materials; assembly of brazed components; brazing in furnace; solving joints in conventional titanium-copper welding The problem of generating a large amount of brittle intermetallic compounds at the interface leads to a titanium-copper joint without brittle interface reaction products.

The invention provides medium-strength high-plasticity titanium alloy. The medium-strength high-plasticity titanium alloy is prepared from, by mass, 11%-26% of Nb, 4%-11% of Mo+W, 0.08%-0.19% of O and the balance Ti and inevitable impurities, wherein Mo>=3%, and 0%<=W<=4%. After the titanium alloy is subjected to heat treatment, the room temperature tensile strength of the alloy is 600-800 MPa, the room temperature ductility is not smaller than 20%, the cold and heat machinability is excellent, and the titanium alloy has high plasticity under the normal temperature condition and the liquid hydrogen temperature condition and can meet the requirement for rivets and ultralow-temperature structural parts in the application fields such as the aviation field and the aerospace field.

The invention discloses an aging heat treatment method for a 7-series aluminum alloy, and belongs to the field of non-ferrous metal materials and heat treatment thereof. The aging heat treatment method is used for the 7-series aluminum alloy after solid solution treatment, and comprises the following steps that (1) first-stage aging is performed, specifically, a 7-series aluminum alloy workpiece is placed in a heating furnace of 90-120 DEG C for heat preservation for 10-30h; (2) second-stage aging is performed, specifically, the temperature is raised to a second-stage predetermined aging temperature of 165 DEG C-185 DEG C along with the furnace, and after the heat preservation is performed for 1-5h, the 7-series aluminum alloy workpiece is subjected to water cooling to the room temperature; (3) third-stage aging is performed, specifically, the 7-series aluminum alloy workpiece is then placed at a third-stage predetermined aging temperature of 60-90 DEG C for heat preservation for 20-30h; and (4) fourth-stage aging is performed, specifically, the temperature is raised to a fourth-stage predetermined aging temperature of 90-110 DEG C along with the furnace, and after the heat preservation is performed for 10-30h, the 7-series aluminum alloy workpiece is subjected to air cooling to the room temperature. In the second-stage high-temperature aging process, a method of lowering the temperature than the RRA temperature and increasing the heat preservation time is adopted, and the problem of uneven structure and performance caused by the temperature gradient due to rapid heating and cooling of large components is solved.

The invention discloses a gas engine cylinder cover comprising a gas cylinder cover in which a gas inlet manifold and a gas mixing chamber are arranged; the gas cylinder cover is in an integrated structure with the gas inlet manifold and the gas mixing chamber; the gas inlet manifold is provided with a gas nozzle hole; an air inlet is corresponding to one end of the gas inlet manifold; the gas cylinder cover is integrated with the gas inlet manifold and the gas mixing chamber to form one part, so that the number of parts of an engine is reduced, installation processes are reduced, the whole quality is improved, and the structure is compact; the gas inlet manifold is integrated onto the gas cylinder cover, so that the strength of the gas inlet manifold is the same with that of the gas cylinder cover, the structural strength of the gas inlet manifold is extremely improved, the gas inlet manifold can bear the explosion mixture shock same to that on a combustor, and the reliability of the gas inlet manifold is enhanced.

The invention discloses a water meter shell material and a preparation method thereof. The material is characterized by comprising the following raw materials in parts by weight: 75-90 parts of iron ore powder, 10-25 parts of polypropylene, 0.1-1.5 parts of antioxidant and 0.1-0.5 part of anti-ultraviolet agent. By using the iron ore powder as the main preparation material instead of the traditional pure plastic or stainless steel material, the method fully utilizes the wide-source low-price raw material; and the material prepared by mixing, cooling and setting the iron ore powder and molten polypropylene has the advantages of high strength, wide temperature variation resistance range (-30-60 DEG C), low tendency to frost crack, and good explosion resistance. Besides, compared with the traditional stainless steel, the material disclosed by the invention has the advantages of light weight and equivalent strength, and is convenient to install, allocate and transport.