39results about How to "Improve forming ability" patented technology

The invention discloses a high-toughness amorphous composite material and its preparation method and application. The amorphous composite material is prepared from a base alloy part and a toughness enhancing part; the element composition and atomic mole percentage of the base alloy part are: Zr: 45‑65%, Hf: 5‑15%, Al: 10‑20%, Ni: 10‑20%, M1 component: 5‑10%, M2 component: 2‑8%; the M1 group Divided into one or more of Sn, Bi, Si, Cu elements; the M2 component is one or two of Ag, Pd elements; the purity of each element in the basic alloy part is greater than 99.9%; the toughness enhancement part is One or more of WC, SiC, TiC, TiN, ZrC nano-powders, the amount added is 2-10% of the volume of the above-mentioned base alloy. The amorphous composite material in the invention has good impact toughness, and has high toughness and impact resistance without mechanical processing.

The invention discloses an image capture-based image capture push system for door curtains. The image capture push system comprises at least one hanging mechanism, a sliding rail, sliding blocks, an image capture unit, an image analysis unit, a control unit and linear motors, wherein the image capture unit is arranged on a door frame, and is used for capturing a human body entering the induction area of the door frame and generating an image signal; the image analysis unit is used for analyzing to obtain the coverage density of the human body in an image; the control unit is used for calculating the coverage density of the human body in the image to obtain the width value of the human body in the image, working out a width value to which door curtain bodies on the door frame need to be pushed, and converting the width value into a drive signal for controlling the motion of each motor and outputting the drive signal; the linear motors are respectively and fixedly arranged on the sliding blocks; each linear motor is used for driving the corresponding the sliding block according to the drive signal to do linear motion in the sliding rail so as to push the door curtain bodies on the hanging mechanism, and the stagger width between the door curtain bodies is driven to reach the width value to which the door curtain bodies need to be pushed. The image capture-based image capture push system disclosed by the invention automatically detects and calculates the width value to which the door curtains need to be pushed, and is more automatic and intelligent, and is capable of conveniently providing a pedestrian path.

The invention discloses a densification formation type preparation method of nickel-based alloy powder. The method is characterized by comprising the following steps: weighting the following components in percentage by mass: 34.3 to 39.4% of nickelous nitrate hexahydrate, 23.9 to 26.9% of chromic nitrate nonahydrate, 1.7 to 2.2% of iron nitrate nonahydrate, 2.5 to 3.1% of ammonium tungstate monohydrate, and 30.7 to 35.4% of oxalic acid; preparing a 300mol solution through nickelous nitrate hexahydrate, chromic nitrate nonahydrate, and ammonium tungstate monohydrate, then heating to reach the temperature of 60 to 85 DEG C, and uniformly stirring; adding 2ml ammonium hydroxide, and stirring for a few minutes; adding iron nitrate nonahydrate and oxalic acid to the solution; maintaining the temperature in a water bath, and uniformly stirring; moving out the solution; naturally cooling to reach the room temperature; filtering and precipitating; drying, filtering and grinding the precipitate; placing the grinded powder into a corundum boat-shaped container; transferring the corundum boat-shaped container into a hydrogenation furnace to reduce at the temperature of 750 DEG C, so as to obtain high-temperature nickel-based alloy powder.

The invention discloses a method for calculating the maximum negative mixing enthalpy of a ternary amorphous alloy. For any given ternary A-B-C alloy system, the composition of element A is known, then A m B 100‑x C x , where, x<100‑m‑x, and 0<x<m, 0<m<100; let the mixing enthalpy of A‑B be ΔH 1 , B‑C mixing enthalpy is ΔH 2 , A‑C enthalpy of mixing is ΔH 3 ; for 1mol A m B 100‑x C x , the enthalpy of mixing ΔH formed between x A, B and C atoms 1 =x(ΔH 1 +ΔH 2 +ΔH 3 ); for the remaining (m-x) A atoms and (100-m-2x) B atoms, the mixing enthalpy is ΔH2; then ΔH=ΔH1+ΔH2 is the maximum negative mixing enthalpy of the system. The invention calculates the maximum negative mixing enthalpy of the system, which has important guiding significance for designing the amorphous alloy composition with the maximum amorphous forming ability.

The invention discloses a preparation method of a nanocomposite adsorption material. The specific steps are: adding a certain amount of concentrated sulfuric acid into a 500mL beaker, slowly adding potassium permanganate and sodium nitrate in an ice bath, and fully stirring to dissolve Finally, add expanded graphite and stir evenly, put it in the refrigerator and store it at 273K for 24 hours; heat the beaker to 308K in an oil bath, keep it warm and stir for 30 minutes, slowly add deionized water dropwise, at the same time, keep stirring and keep the temperature Rising to 371K, insulated and stirred at 371K for 15 minutes; the present invention uses agar as a carrier to prepare activated carbon / graphene oxide / agar aerosol, which not only gives full play to the efficient adsorption performance of activated carbon and graphene oxide, but also avoids the easy absorption of graphene oxide. Agglomerated, micro-sized graphene oxide is difficult to remove from the water body, solving the problem of secondary micro-pollution to the water environment.

The invention relates to a detection technology of copper ions, and in particular relates to a preparation method of a reduced carbon quantum dot containing calcium alginate gel for detecting copper ions. The preparation method of the carbon quantum dot containing calcium alginate gel for detecting the copper ions comprises the following steps of: preparing fluorescent carbon quantum dots; neutralizing the fluorescent carbon quantum dots, adding sodium borohydride into the neutralized fluorescent carbon quantum dots to perform reduction; mixing deionized water with the neutralized fluorescent carbon quantum dots at equal volume, and adding sodium alginate into the mixture to obtain a sodium alginate sol; and spraying a calcium ion solution to the surface of the sol or soaking the sol into the calcium ion solution to perform crosslinking, and drying to obtain the calcium alginate gel. By using the characteristics that the carbon quantum dots have fluorescent characteristics, the fluorescence of the carbon quantum dots is enhanced after reduction, and the calcium alginate can enhance the fluorescent characteristics of the carbon quantum dots, when the copper ions are detected, the cost of an adopted fluorospectro photometer is low, the sample preparation and treatment steps are simple and easy to operate, and the detection sensitivity is high, so that the calcium alginate gel can be widely used for detecting the copper ions.

The invention belongs to the manufacturing technology of metal materials, and relates to a magnesium metal plate capable of being quickly rolled and formed and a rolling method of the magnesium metal plate. Zn and Er are selected as main alloying elements, the additive amount of Zn is 0-5.0 wt%, the additive amount of Er is 0-1.0 wt%, the sum of the mass percents of Zn and Er is not smaller than 0.5% and not larger than 5.0%, and Mg serves as the balance. The high-temperature rolling temperature interval ranges from 350 to 500 DEG C, and deformation of each pass is 25%-35%. The low-temperature rolling temperature interval ranges from 250 to 350 DEG C and does not include 350 DEG C, and deformation of each pass is 10%-25%. The accumulated deformation of high-temperature rolling and low-temperature rolling is not smaller than 80%. The plate is smooth in surface and edge and free of cracking, and is a metal material of the plate capable of being quickly rolled and formed.

The invention discloses a western-style clothes front shirt and liner molding die and a manufacturing method thereof. The western-style clothes front shirt and liner molding die comprises a first template, a clamping plate and a second template; the first template, the clamping plate and the second template are successively superposed and form turnover movable connection at one end, and needle walking grooves are formed in the first template, the clamping plate and the second template; the portions between the clamping plate and the first and second templates are respectively used for clampinga liner and a front shirt; a first protrusion, a second protrusion, a third protrusion and a fourth protrusion are arranged on the clamping plate along the needle walking grooves; the first protrusion is used for increasing remaining amount of a lapel corner of the liner; the second protrusion is used for increasing folding amount of a fold line of a lapel; the third protrusion is used for increasing loose amount of a lapel seam allowance end; the fourth protrusion is used for making a lower hem of the front shirt be concave after molding of the lower hem of the front shirt. Smoothness of theprepared western-style clothes front shirt and liner is better, the close-fitting characteristic of the lower hem of the front shirt and lapel is better, the lapel at the lapel corner position and the lapel fold line position is more close-fitting and cannot easily upwarp, the operation is simple, the production efficiency is higher, and the consistence of product quality is better.

A method for promoting crop straw to become efficiently decomposed by the use of alkaline residues and an application thereof. The method provided by the invention comprises the following steps of: crushing the straw and adjusting the water content to 60-70 wt%, adding inocula with uniformly mixing, adjusting the carbon / nitrogen ratio to 20-30 by the use of urea, adding alkaline residues which account for 5-15 wt% of the above mixture, culturing the materials in airtight condition for 50-60 days, ventilating once three days for 5-15 minutes each time, and adjusting the water content within 60-70 wt% during the period. According to the test, peanuts and rice straw are used as raw materials, two inocula are selected, and different levels of alkaline residues are respectively added; the promotion effect of adding different levels of alkaline residues under the condition of constant temperature incubation on the efficient decomposition of straw is studied, so as to provide an appropriate chemical additive for the aerobic composting of straw and raise the agricultural utilization value of straw.