66results about How to "Has a strengthening effect" patented technology

The invention discloses a low-temperature-resistant hot-rolled H-shaped steel and a preparation method thereof. The hot-rolled H-shaped steel comprises the following chemical components in percentage by weight: 0.07-0.10% of C, 0.2-0.4% of Si, 1.30-1.60% of Mn, at most 0.020% of P, at most 0.015% of S, 0.015-0.070% of V, 0.010-0.030% of Ti, and the balance of Fe and inevitable impurities. The production method comprises the following steps: converter smelting, LF (ladle furnace) refining, continuous casting, rolling and the like. The structure of the H-shaped steel is a polygonal ferrite and pearlite structure, the yield strength is 350-450 MPa, the tensile strength is 480-600 MPa, the percentage elongation after fracture is greater than or equal to 22%, and the -40-DEG C V-notch Charpy impact energy is greater than or equal to 200J.

The invention relates to a method designing a multi-overflow tray by an equal residence time method, which is intended to raise tray mass transfer efficiency and processing capability, and alleviate amplification effect of equipment. The method is defined by residence time of the liquid on a tray bubbling zone, integrates advantages using an equal channel length method and an equal bubbling area method, takes regard of a contraction effect of a tower wall to a liquid flow and influence of physical property condition on the flow, and provides a calculating formula of the channel length in the tray bubbling zone under the equal residence time. Downcomer weirs on the edge at two sides of the tray are in a backswept weir structure, in order to increase overflow circumference length of the downcomer at two sides. A lower edge of an eccentric downcomer uses an arc or tooth-form structure, in order to balance a bottom gap outlet area of the downcomer. A liquid distribution plate is arranged in a liquid accepting plate, in order to balance liquid flow distribution at two sides of the downcomer. The method enables the liquid flow on each tray bubbling zone to have similar residence time and mass transfer efficiency, and achieves effects of reasonably distributing liquid, promoting gas and liquid uniform distribution and alleviating amplification effect of the tower equipment. The method is particularly suitable for large-scale tower equipment with high gas-liquid phase load.

The invention discloses a preparation method for a high-molecular weight polylactic acid steric compound with fusion stability. The preparation method comprises the following steps of (1) preparing poly-levolactic acid, poly-dextrolactic acid and plasticizer polyethylene glycol according to a certain weight ratio; (2) respectively dissolving the poly-levolactic acid, the poly-dextrolactic acid and the polyethylene glycol in an organic solvent, performing mixing and solution-casting under the condition of intense agitation after the poly-levolactic acid, the poly-dextrolactic acid and the polyethylene glycol are completely dissolved, and performing vacuum drying on a solution-casting sample; and (3) rapidly heating the solution-casting sample to 230 to 270 DEG C at a speed of 100 DEG C/minute under the condition of nitrogen protection after the vacuum drying, and slowly cooling at a speed of 10 DEG C/minute after 2 minutes of constant temperature. According to the preparation method, a very high possibility is provided for reserving, properties, such as the excellent mechanical property, the heat resistance and the like, of the polylactic acid steric compound in fused products.

The invention provides a flux-free vacuum-cast high-purity magnesium alloy and a preparation method thereof. The method includes the following steps that (1) raw materials are preheated; (2) heating and smelting are performed as follows: after the inside of a furnace is pumped to be vacuum, the furnace is filled with inert gas to be under the pressure being 500-1,000 Pa, power-transmission heatingis started, and the three-stage type heating manner is adopted in the heating process; (3) gas introduction and refinement are performed as follows: gas introduction and refinement are performed in melt obtained in step (2), the inert gas is introduced, in the process of gas introduction and refinement, the temperature is increased to be 800-850 DEG C at the rate of 3-8 DEG C/min, then high-temperature standing is performed under the temperature condition that 800-850 DEG C is kept, and the standing time ranges from 15 min to 40 min; (4) filtering and casting are performed as follows: after high-temperature standing in step (3) ends, the temperature is reduced to be 760-820 DEG C, and casting is performed after filtering; (5) cooling is performed as follows: after casting in step (4), furnace cooling is started, or the inert gas is introduced for boosting cooling, and then a magnesium alloy cast ingot is obtained. The obtained magnesium alloy is uniform in structure, free of nonmetalslag inclusions (such as flux slag inclusions and oxidation slag inclusions), low in shrinkage porosity, few in cast ingot defect and obvious in effect on magnesium-rare earth alloys difficult in slagremoval.

The invention relates to manufacturing technology of an expansion joint and a deformation joint of a bridge crash barrier. A steel plate and two foam plates are used for reserving the deformation joint and the expansion joint. The deformation joint steel plate is machined according to designed barrier formwork splicing section size. A bolt hole is reserved according to a bolt position of a barrier formwork. When the crash barrier formwork is mounted, a formwork splicing joint is adjusted to a designed deformation joint position, the steel plate is inserted at the splicing joint, and the steel plate and the barrier formwork are integrally connected through a bolt. Then, the foam plates are attached on two sides of the steel plate according to the width of the reserved deformation joint, the foam plates are machined to be in a barrier shape, and lubricating oil is coated on the contacting faces of the steel plate and the foam plates. When the formwork is disassembled, the steel plate is taken out upwards, and the standard deformation joint is formed. According to the technology, the formwork is convenient to assemble and disassemble and can be used repeatedly, cost is saved, the manufactured deformation joint and the manufactured expansion joint are straight and attractive, manufacturing is convenient, simple, quick and reliable, the used formwork can be used as a plug plate at the same time, reinforcing effect is achieved, the reserved joints are hollow, and deformation effect is really achieved.

The invention relates to the technical field of health products, and in particular relates to a lucid ganoderma refined powder compound soft capsule and a preparation method thereof. The lucid ganoderma refined powder compound soft capsule comprises 1 to 300 parts of lucid ganoderma refined powder, 1 to 50 parts of lycopene, 1 to 50 parts of grifolan, and 1 to 500 parts of safflower oil. According to the lucid ganoderma refined powder compound soft capsule, the lucid ganoderma refined powder, lycopene, grifolan and safflower oil which are different in molecular structure are used in common and have some same pesticide effects and also have individual outstanding pesticide effects; and after being organically combined in proportion, the four materials complement and promote one another on curative effect and maximize the effects individually. A preparation in form of the soft capsule can cover the discomfort smell of the contents and effectively improve the stability of the lycopene and safflower oil, enables quick and complete intake and absorption of the healthcare components, and give full play to inflammation resistance, pain alleviating, poisonousness reducing, wound repair promoting, immunoregulation, tumor inhibition, resisting to cancer, three highs (high blood pressure, high blood sugar and high blood lipid) and cardiovascular disease, senescence delaying, improvement of liver function, organism balancing and adjusting and other effects.

The invention relates to an aluminum alloy wire suitable for overhead transmission lines, belonging to the technical field of aluminum alloy wires, which is made of the following components in mass percentage: Mg2.0~3.2%; Si3.5~4.5%; Mn0.2 ~0.3%; Cr: 0.1~0.2%; Zr0.18~0.25%; Ti0.35~0.40%; Yb0.15~0.3%; the balance is Al and impurities with content ≤0.05%. The invention provides an aluminum alloy wire, which can improve the strength and corrosion resistance of the aluminum alloy wire while enhancing the conductivity of the aluminum alloy wire, so as to meet the needs of harsh environments.

The invention discloses a fishing net thread use quality improvement processing process. The process includes steps: (1) cleaning and deoiling treatment; (2) phosphoric acid solution soaking treatment; (3) treating fluid A soaking treatment; (4) ultraviolet irradiation treatment; (5) treating fluid B soaking treatment; (6) flushing and drying treatment. By special processing of fishing net threads, under joint actions in each step, the grafting effect of the fishing net threads is evidently improved, utilization characteristics of the fishing net threads are improved, and the finally treaded fishing net threads are high in coating compatibility, corrosion resistance, strength and comprehensive quality, thereby being high in popularization and utilization value.

A laser shock compounding method and device of perforated plate bushings are especially suitable for compound treatment of bushings of perforated parts such as granulator templates. The method includes the steps that shock waves generated on the surface of a laser radiation material shocks a compound layer material covering the surface of a perforated plate, the compound layer material generates tensile deformation and is embedded into holes of the perforated plate, and eventually the compound layer material is punched and broken to get through bushings holes through macro-energy laser pulses. The device is composed of a laser generator, transparent liquid, a blank holder, a clamp, a compound layer, the perforated plate, a working platform, a working platform control device, a computer and a laser generator control device. Through the laser shock compound treatment of the perforated plate bushings, the inner walls of all the holes and the working surface of the perforated plate are covered with the compound layer material, the whole abrasive resistance of the bushings is improved, the bushings of all the holes are connected together through the compound layer material covering the working surface of the perforated plate to form a whole, and therefore the bushings can not fall off in the working process.

The invention discloses a process for producing an aluminum medium gaugefoil through an 8150 alloy. The process includes the following steps that 1, material proportioning is performed; 2, smelting isperformed; 3, refining is performed; 4, cast rolling is performed; 5, cold rolling is performed; 6, rolling is performed through a rolling mill; 7, thickness shearing is performed; and 8, annealing and packaging are performed. An aluminum medium gaugefoil roll is annealed and cooled through an annealing furnace and then is packaged, and thus a finished aluminum medium gaugefoil is obtained. The aluminum medium gaugefoil produced through the process is excellent in tensile strength, ductility and the like, is not prone to cracking during stamping, is high in yield and meets the using requirement of a container foil.

The invention discloses a flux-cored wire for aluminum and aluminum welding. The flux-cored wire material comprises the following chemical components in percentage by weight: 0.01 to 20 percent of Si, 0 to 30 percent of Zn, 0 to 5 percent of Ti, 0 to 0.5 percent of Ce, 0.001 to 0.5 percent of P, less than 0.1 percent of other inevitable impurity and the balance of aluminum. The flux-cored wire has the characteristics of good drawing performance, high flowability, high weld strength, high postwelding gas tightness, and no corrosion, and can be widely applied to aluminum and aluminum welding of heat exchangers or radiators in air conditioning, refrigerator, automobile and refrigeration industry.

The invention discloses a pure metal/high-entropy alloy nano-multilayer film with controllable phase change characteristics and a preparation method thereof. The preparation method comprises the following steps: alternately carrying out magnetron sputtering on the surface of a silicon substrate with an oxide layer removed through a pure metal target and a high-entropy alloy target to obtain the pure metal/high-entropy alloy nano-multilayer film, wherein the pure metal target is a Cu target, and the high-entropy alloy target is a Fe50Mn30Co10Cr10 target or a Fe50Mn30Co10Ni10 target; during magnetron sputtering, the Cu target and the high-entropy alloy target both adopt a direct-current power supply, the power is 200 W, and the deposition air pressure is 0.8-1.3 Pa; and the pure metal/high-entropy alloy nano-multilayer film is a Cu/Fe50Mn30Co10Cr10 nano-multilayer film or a Cu/Fe50Mn30Co10Ni10 nano-multilayer film. According to the preparation method, the preparation of the metal/high-entropy alloy nano-multilayer film with adjustable phase change is realized.

The invention discloses an aluminum foil for an electronic tag with low pinholes and a high finish degree. The aluminum foil for the electronic tag with the low pinholes and the high finish degree comprises the following raw materials in percentage by weight: 0.15 to 0.3 percent of Si, 0.03 to 0.06 percent of Cu, 0.05 to 0.15 percent of Zn, 0.08 to 0.10 percent of Mn, 0.05 to 0.10 percent of Ti, 0.3 to 0.7 percent of Fe, 0.05 to 0.06 percent of Ni, 0.005 to 0.006 percent of Cr, 0.006 to 0.008 percent of Cd, 0.005 to 0.006 percent of Pb, 0.006 to 0.008 percent of Sn, 0.006 to 0.008 percent of Zr, and the balance Al, wherein the weight percentage of the Fe and the Si satisfies the relationship according to the following formulas: Fe/Si is equal to 2 to 3, and Fe+Si is less than or equal to 1percent. The aluminum foil produced by the invention solves the problems of rolled dark lines, tissue lines, easiness in causing strip breakage and the like encountered in the aluminum foil production process.

The invention provides antifouling paint for ships, as well as a preparation method and an application of the antifouling paint. The antifouling paint for the ships is prepared from Zn-Al-Mg-RE as main agents, organosilicon or fluoride as an auxiliary agent as well as cuprous oxide and auxiliary toxic agents as antifouling agents, wherein the auxiliary toxic agents are one or more of isothiazolinone, triazine and zinc and copper complexes of pyridyl thiophenol oxide. The anti-fouling effect is good in the corrosive environment. High-speed arc spraying is a dynamic and non-equilibrium rapid metallurgical process. As a result of asymmetry of melting of cored wires on two electrodes, the difference in composition of a wire sheath and composition of a core, and the asynchronism of melting of the sheath and the core, the size of droplets and alloying inside the droplets are seriously non-uniform, and various forms of tissue are formed during solidification and cooling.

The invention discloses magnesium-based amorphous alloy solder used for magnesium alloy brazing and a preparation method for the magnesium-based amorphous alloy solder. The structural formula of the amorphous alloy solder is Mg66Cu15Ag5Zn4Dy1GdxNd9-x. According to the preparation method, Mg, Cd, Nd, Ni and Zn are mixed in a graphite crucible according to the needed element composition proportion, melted under the protection of argon and poured into a copper die, and then the Mg-Cu-Ag-Zn-Dy-Nd amorphous alloy solder is obtained. The magnesium-based amorphous alloy solder is suitable for magnesium alloy brazing at the solidus temperature of more than 400 DEG C, and has the characteristics of being low in melting point and high in strength. When the heat-resistant magnesium alloy solder is used for Gw103K magnesium alloy brazing, the room temperature shear strength of a brazing overlap joint is 128-136 MPa. The preparation method is simple, easy to operate, good in component control, small in impurity content and suitable for preparing high-quality magnesium-based amorphous alloy solder.

The invention discloses a preparation method of a titanium-aluminum alloy target material. According to the technical scheme, the preparation method of the titanium-aluminum alloy target material comprises main material powder, ingredient powder and trace powder, and further comprises the following steps that S1, the main material powder, the ingredient powder and the trace powder are mixed to beuniform, large-particle impurities are filtered out, powdery particles with the equal size are reserved, and mixed powder is obtained; and S2, the mixed powder remained after filtering in the step S1is poured into medical alcohol for soaking and cleaning; The preparation method of the titanium-aluminum alloy target material has the beneficial effects that the titanium-aluminum alloy target material is prepared by adding the ingredient powder composed of silicon powder and magnesium powder and the trace powder composed of chromium powder and then adopting a powder metallurgy method, the strength of the alloy is improved, the casting performance, the corrosion resistance and the welding performance are all improved, the finally prepared titanium-aluminum alloy target material is excellent in performance, balanced in attributes in all aspects and simple in production process, and therefore the production cost can be reduced, and production is more economical.

The invention discloses a method for preventing cast-in-place pile cage floating and an adopted reinforced concrete base. The reinforced concrete base is welded to the bottom of a reinforcing cage ofa cast-in-place pile, and a middle hole of the reinforced concrete base is arranged to be in a shape of a hopper with the large top and the small bottom; when pile concrete is poured, gravity of the concrete enables the reinforced concrete base to generate downward pulling force, and therefore the cage floating phenomenon is prevented. According to the method, the downward force is generated through the reinforced concrete base, and cage floating can be prevented; the bottom surface of the reinforced concrete base is in contact with the bottom surface of a pile hole, and upward floating forcegenerated by impact of the poured concrete basically has no influence on a pile bottom section; the reinforced concrete base has the strengthening effect on the pile bottom, the quality of the pile bottom can be improved, certain guarantees are provided, and the pile bottom quality is reliably guaranteed after a grouting pipe is used for secondary reinforcement on the pile bottom.

The invention belongs to the field of food processing and relates to highly digestible sweet soup balls and a preparation method thereof. The highly digestible sweet soup balls are characterized by being prepared from components by weight as follows: 40-70 parts of glutinous rice flour, 28-35 parts of wheat starch, 7-12 parts of lotus root starch, 3-8 parts of sucrose, 60-75 parts of water, 0.15-0.25 parts of hydroxypropyl distarch phosphate starch, 0.01-0.02 parts of monoglyceride, 0.03-0.05 parts of sucrose ester, 0.1-0.25 parts of ascorbic acid and 0.05-0.2 parts of composite phosphate. A traditional technology is adopted and tightly combined with a modern production technology, and production cost can be reduced substantially. The sweet soup balls prepared with the formula are easy toform and are full, besides, frost cracking rate and water loss rate of the quick-frozen sweet soup balls are greatly reduced, time for cooking is shortened, soup obtained after cooking cannot be turbid, and the digestive rate is increased by 10.5%.