63results about How to "Save metal" patented technology

The invention provides a method for preparing a ceramic particle reinforced steel-based mesh material, which comprises: forming a mixture of hard ceramic particles and alloy powder into strip blocks by powder sintering or by using and adhesive; joining the strip blocks into a corresponding mesh structure or joining and overlapping the strip blocks into mesh three-dimensional framework structure; and performing normal sand casting or lost foam casting, namely melting a substrate metal material, pouring the molten substrate metal material in a molding cavity, allowing the molten substrate metal material to cool and condense at room temperature, removing sand and obtaining the ceramic particle reinforced steel-based mesh material. The obtained ceramic particle reinforced steel-based mesh material gives full play to the high wear resistance of the ceramic particle hard phase and the toughness of the steel base; and the method with convenience for regulation and reliable process solves the problem of incomplete reaction of the composite material, nonuniform reinforcing phase particle distribution, pollution weakening on a reinforcing phase interface and the like and is used in wear resistance fields of mines, power, metallurgy, coal, building materials and the like.

The invention discloses a preparation method of a particle-reinforced metal matrix composite material, and belongs to the technical field of a novel material. The method comprises the following steps: firstly, putting reinforced particles and matrix powder into a ball grinder, so as to evenly mix; then putting the mixed powder into a graphite jig, putting into spark plasma sintering (SPS) equipment; setting a proper sintering parameter, and putting the sintered sample into a vacuum tube furnace to set heating temperature, so as to change a bonding interface between the reinforced particles and the matrix in the composite material, or prompt interface reaction. The reinforced particles in the composite material prepared by the method can be well evenly distributed inside a composite layer, so that the comprehensive properties of the materials are greatly improved, the composite material is even and single in texture, the mechanical property can be changed to a certain extent, and reference is provided for high-temperature wear-resisting fields, such as steel, metallurgy, coal and the like, parts under chilled and heated conditions or other researchers for researching the composite material performances.

The invention discloses an isothermal forging method for titanium alloy blade, which is implemented by the following steps: (1) coating lubricant on the surface of pre-forged titanium alloy blade blank; pre-heating with an electrothermal furnace to the deformation temperature of the blade blank; (2) fixing a lower die holder in an isothermal molding heater, and respectively fixing the upper die and the lower die on the upper die holder and lower die holder; (3) fixing the isothermal molding heater on a hydraulic press, heating to 900-930 DEG C and maintaining the temperature for at least 3h; (4) taking the blade blank out of the electrothermal furnace, putting into the upper die and the lower die in the isothermal molding heater, forging by the hydraulic press, and controlling the hydraulic press to perform return stroke operation when the dimension of the blade blank satisfies the requirement. The titanium alloy blade blank obtained by the inventive method has a preciseness satisfying technical requirement and obviously improved mechanical property.

The invention discloses a preparation method of a titanium-steel composite plate, and belongs to the field of material processing. The preparation method of the titanium-steel composite plate comprises the steps that the surfaces of adopted titanium blanks and the surface of an adopted steel blank are treated, and then the surfaces of the titanium blanks are coated with paint and dried at the roomtemperature; the two titanium blanks with the surfaces being treated and coated with paint are aligned and stacked together, the steel blank is placed between the two titanium blanks, and then the blanks are assembled together symmetrically; the periphery of a composite blank is welded and sealed, and vacuumizing treatment is conducted; and the composite blank is placed in a heating furnace so asto be subject to heat treatment, then multi-pass rolling is conducted, the composite blank is air cooled after being rolled, and edge cutting, tension-straightening and flattening are conducted. According to the preparation method of the titanium-steel composite plate, the surfaces of the titanium blanks are coated with protective coatings, so that the titanium blanks are protected, the situationthat the composite performance is affected due to the fact that titanium with active chemical properties is oxidized and forms compounds with other elements is avoided, and the coatings are preparedfrom isolation paint which can prevent oxidization of titanium and prevent diffusion of harmful elements (such as C and N) at high temperatures.

The invention discloses a process for producing a marine hot-rolled T-shaped steel. The raw material of the process is special steel for marine steel, and billet blanking is calculated according to the specification of a finished product, multiple lengths and the internal width of a heating furnace. The billet is heated at the temperature of 1140-1200 DEG C, firstly roughly rolled and secondarily rolled by a conventional mill train, and then finely rolled by a universal mill train to obtain a finished product rolled piece, the rolled piece is further cooled, straightened and cold sawn to length to obtain a finished product. The invention has the advantages of one-time forming by hot rolling, high precision of the finished product, and reduces metal consumption and production cost.

The invention provides a high-elongation-rate heat-resistant aluminum alloy suitable for gravity casting and a preparation method thereof. The alloy comprises the following elements of, by weight, 9.0-12.0% of Si, 0.05-0.4% of Cu, 0.02-0.05% of Mg, 0.05-0.1% of Sc, 0.6-0.8% of M and and the balance Al and inevitable Fe impurities, wherein the M comprises at least two elements of Ti, Zr and V. After gravity casting of the high-elongation-rate heat-resistant aluminum alloy suitable for gravity casting, room-temperature yield strength of the as-cast alloy can reach 143-152MPa, the elongation ratecan reach 8.0%-12.0%, high-temperature tensile strength at 200 DEG C can reach 158-170MPa, the high-temperature elongation rate can reach 10.0%-20.0%, the room-temperature yield strength and heat resistance are excellent, the alloy can be applied to automobile parts without solid solution heat treatment, so that the requirements of light-weight development of automobiles can be met.

The invention relates to the technology of heat exchangers, particularly a weldless plate-type heat exchanger. A plurality of fluid passages are formed by a plurality of heat exchange plates 1 which are vertically placed in a rectangularly (90 DEG) staggered manner, wherein, the openings of adjacent fluid passages among the fluid passages are mutually staggered at an angle of 90 DEG to form hot fluid passages and cold fluid passages; upward right-angled fold edges are formed on the two symmetric sides of each heat exchange plate 1, and right-angled double-fold edges are formed on the other two corresponding sides so as to form L-shaped fold edges; each two vertically adjacent heat exchange plates are placed in a rectangularly (90 DEG) staggered manner, that is, the downward L-shaped fold edge of an upper heat exchange plate is correspondingly placed between the upward right-angled fold edges of a lower heat exchanges plate, and the upward rectangular (90 DEG) fold edge of the lower heat exchange plate serves the function of limiting to the L-shaped fold edge of the upper heat exchange plate; a sealing gasket 5 is arranged between the lower heat exchange plate and the upper exchange plate; a flexible sealing layering 3 is arranged between each two adjacent heat exchange plates; and a support strip 2 is arranged between the passage formed by the upper heat exchange plate and thelower heat exchange plate.

The invention discloses a casting method capable of preventing a precise investment casting from generating hot-spot shrinkage holes. The casting method comprises the following steps that: a dead head position is determined according to a conventional method, and a dead head metal patch is replaced by a shell patch at a part, needing to be provided with the dead head metal patch, of the precise investment casting, wherein the material of the shell patch is mortar paste prepared from back layer slurry, back layer powder and back layer sand in a mass ratio of 1:1:5; the shell patch is bonded by the mortar paste, wherein before bonding, a layer of back layer slurry is brushed at a part needing to be bonded with the mortar paste at first, and then the wedge-shaped shell patch is formed according to a method that the thickness at a dead head is greater than that at a hot spot; after that, shell roasting and pouring are performed. Due to the action of the shell patch, the dead head and the hot spot keep a good feeding channel, thus realizing a mode of sequentially solidifying from the hot spot to the dead head, and then preventing the hot spot of the casting from generating the shrinkage holes. According to the method, patch metal for the casting is saved, the product yield of the process increases, and the visual quality of the casting is guaranteed.

The invention relates to a device and method for continuous preparation of lithium hexafluorophosphate. The device comprises a continuous evaporation crystallizer, a condensation recoverer, a heater, an ex-situ circulation pump, a product crystal delivery pump and a separation apparatus. Specifically, the continuous evaporation crystallizer is internally equipped with a stirrer, and the lower part of the continuous evaporation crystallizer is equipped with an elutriating leg; the ex-situ circulation pump, the heater, and the continuous evaporation crystallizer are connected in order; the elutriating leg is connected to the product crystal delivery pump; the product crystal delivery pump is connected to the separation apparatus; and the condensation recoverer is connected to the upper part of the continuous evaporation crystallizer. The invention employs an effective evaporative crystallization method and the advanced DBT type continuous efficient evaporation crystallizer to make the crystalline particles of lithium hexafluorophosphate more uniform, and effectively lowers the product investment cost and energy consumption per ton, thus realizing continuous, efficient and large-scale production of lithium hexafluorophosphate.

The invention provides a heat-resistant high-pressure casting Al-Si-Ni-Cu aluminum alloy and a preparation method thereof, the aluminum alloy comprises the following elements in percentage by weight:10.5-12.0% of Si, 2.0-5.0% of Ni, 2.0-4.0% of Cu, 0.05-0.2% of Mg, 0.1-0.5% of Cr, 0.01-0.04% of Sr, 0.3-0.6% of M, 0.1-0.5% of Fe and the balance of Al, wherein M is at least two elements of Ti, Zr,and V. The tensile strength of die-casting alloy at room temperature, 350 DEG C instantaneous and 350 thermal insulation is 318-360 MPa, 140-155 MPa and 75-93 MPa, and the elongation is 1.2-2.0%, 5.3-6.3% and 5.8-7.2%; without solution heat treatment, the die-casting alloy can be applied to automotive heat-resistant parts such as pistons so as to meet the needs of automotive lightweight development.

The invention relates to a pair of environment-friendly nail clippers. The environment-friendly nail clippers are formed by an upper knife edge, a lower knife edge, a spring clip, a handle, a pull ring and a pull ring pin. The rear portion of the upper knife edge and the rear portion of the lower knife edge are each provided with a tail core, the spring clip is in the U shape, inner holes are formed in the two ends of the spring clip, and the tail core of the upper knife edge and the tail core of the lower knife edge are inserted into the two inner holes respectively. The pull ring is concave, transverse holes are formed in the two ends of the pull ring, and the pull ring is clamped to the outer side of the front end of the spring clip from bottom to top; a transverse hole is formed in the lower end of the handle, and the upper end of the handle is in the tongue shape; the lower end of the handle is movably connected with the pull ring through the pull ring pin. When the environment-friendly nail clippers are used, the handle and the pull ring are moved to the front portions of the ends of the spring clip and then are pressed downwards. When the environment-friendly nail clippers are not used, the handle and the pull ring are moved to the rear portion of the spring clip, and the handle is turned forwards. The environment-friendly nail clippers are simple in structure, practical and reliable, and metal materials are saved.

The invention discloses a pressure casting process for a bearing block, which includes the steps: mounting a die; preheating the die; cleaning the die; spraying coatings on the die; placing the die on a die assembly device for die assembly; selecting injection pressure and filling speed; injecting liquid metal into a cavity and leading the cavity to be filled with the liquid metal; continuing injection under the action of an injection plunger until the liquid metal filled to a flow gate of the cavity is completely solidified; taking out a casting by opening the cavity after maintaining pressure; and cleaning the casting. The pressure casting process has the advantages that fine product quality is ensured, precision, strength and hardness are high, machining amount is small, large quantities of machining equipment and machining time are reduced, metal utilization rate is increased, both assembly time and the metal are saved, production efficiency is high, and mechanization and automation are easy to realize.

The invention belongs to the field of municipal solid waste treatment processes, in particularly relates to a municipal solid waste incineration power generation system which comprises a recovery module, a combustion-supporting module, a temperature control module, an optimization module, a road planning module and a waste treatment module. The recovery module comprises a flue gas extraction unit,an analysis unit, a spectrum display unit, a sorting unit, a judgment unit and a separation and recovery unit; the analysis unit is used for carrying out component analysis on the flue gas transmitted by the flue gas extraction unit, sending an analysis signal to the spectrum display unit and sending analysis data to the arrangement unit; the spectrum display unit is used for carrying out spectrum display on garbage combustion according to the analysis signal sent by the analysis unit and sending the spectrum data to the arrangement unit. The system is mainly used for solving the problems that in the prior art, metal in the waste incineration process cannot be recycled, the combustion condition cannot be monitored in real time, and whether the heat transmission condition is blocked or notcannot be known.

The invention relates to a multi-energy, low-carbon, energy-saving and environment-friendly synchronous one-stroke anti-detonation internal combustion engine. The engine is different from the existing internal combustion engines such as a four-stroke internal combustion engine and a two-stroke internal combustion engine, further perfects an authorized one-stroke anti-detonation free-piston engine and an authorized one-stroke anti-detonation internal combustion engine of the applicant, and is characterized in that two or more opposite air cylinder heads are arranged; an air inlet scavenging cylinder is arranged behind each of the two main air cylinders (detonation working air cylinders) at the two ends, and connected with a middle engine body; two air cylinders and two pistons are arranged on each side by taking a main shaft as a center, are the same in structure; in a center line of the air cylinders, the four pistons form a piston body which pushes a half-gear-shaped part through an upper rack and a lower rack to drive the main shaft to rotate in a clockwise direction; the two sides perform counter detonation; and since the main shaft works outwards, the purpose of synchronous operation incapable of being achieved by the former two patents in practice is achieved. In addition, a multi-energy device is designed; multiple energy can be used only by changing several parts on the same engine body; and the multi-energy device is a revolution of the existing internal combustion engines.

The invention discloses a method for calculating shape sizes of cross gate cross sections of gating systems for casting, relates to the field of casting, and aims at solving the problem that existingcalculation methods are incorrect in calculation results, need table lookup in calculation processes, are complex to operate and waste time and labor. According to the calculation method, a golden section number 0.618 is adopted to calculate shape sizes of cross gate cross sections; a formula (as shown in the specification) is calculated for the golden section number 0.618 through an area formula(as shown in the specification) for cross gate cross sections of gating systems for casting and a specific value of a theoretical width w of a set cross gate cross section to a height of the cross gate cross section; and results that a is approximately equal to 0.636h and b is approximately equal to 0.601h are obtained through a calculation formula (as shown in the specification) of an upper sidelength c of the cross gate cross section, a calculation formula a=w+2c of a lower side length a of the cross gate cross section and a calculation formula b=w-2c of a practical width b of the cross gate cross section. According to the method, the calculation process does not need table lookup, and the calculation is simple and accurate.

The invention relates to a multiple-energy source low-carbon energy-saving environment-friendly synchronous one-stroke opposite-explosion internal combustion engine which is different with existing internal combustion engines, such as a four-stroke or two-stroke internal combustion engine. A one-stroke free piston motor and a one-stroke opposite-explosion internal combustion engine authorized by the inventor are further perfected by the multiple-energy source low-carbon energy-saving environment-friendly synchronous one-stroke opposite-explosion internal combustion engine. The multiple-energy source low-carbon energy-saving environment-friendly synchronous one-stroke opposite-explosion internal combustion engine is characterized in that: two or more than two opposite cylinder heads are provided; an air inlet and air scavenging cylinder is installed at the back of main steam pumps (explosion working cylinders) to be connected with a middle engine body; a main shaft is used as the center; two cylinders and two pistons are arranged at each side, and both sides have the same structure and are on the same center line of the cylinders; a piston body is composed of the four pistons; the main shaft is driven by a half side shape similar gear pushed by an upper rack and a lower rack to be rotated clockwise so that both sides are oppositely exploded; and the purpose of synchronous operation failed to be achieved by the first two patents is achieved by external working of the main shaft. In addition, a multiple-energy source device is designed, multiple energy sources can be utilized so long as a plurality of parts on the same engine body is changed, and the multiple-energy source low-carbon energy-saving environment-friendly synchronous one-stroke opposite-explosion internal combustion engine is a revolution for the existing internal combustion engine.

The invention provides a lead frame pin cutting structure. The lead frame pin cutting structure comprises a pin connection portion, multiple pins and multiple pin end portions between the pins and the pin connection portion, wherein the quantity of the pins is equal to the quantity of the pin end portions, the pins and the pin end portions are arranged at two sides of the pin connection portion, the pins, the pin end portions and the pin connection portion are an integrated structure, and width of the pin end portions connected with the pins is smaller than width of the pins. According to the lead frame pin cutting structure, design of the pin end portions of the QFN lead frame is optimized, gaps among the pins are enhanced at an early design period, metal of a blade cutting portion is reduced, influence of a cutting stress on quality of products in a production process is ameliorated, cutting service life of a blade is prolonged, and product cutting quality is improved.

The invention relates to an air-conditioning system for a vehicle, for example a bus, heavy goods vehicle or rail vehicle, in particular rooftop air-conditioning system for mounting on a vehicle roof,having a condenser module (18) which comprises a condenser housing (24) and a condenser (20) arranged in the condenser housing (24), and/or having an air-conditioning module (26) which comprises an air-conditioning housing (34) and an evaporator (28) arranged in the air-conditioning housing (34), and having a support frame (38) which bears the condenser module (18) and/or the air-conditioning module (26) and holds these on the vehicle roof. On the support frame (38) there is provided at least one detent connection (46) and/or a plug-type connection (45) with securing element (47) for the fastening of the support frame (38).

The invention discloses a ganoderma lucidum multi-component extraction and separation method and application thereof in preparation of an artificially planted ganoderma lucidum extract, and belongs to the technical field of deep processing of ganoderma lucidum. The ganoderma lucidum multi-component extraction and separation method comprises the following steps that ganoderma lucidum is crushed and then extracted, multi-stage separation is conducted on an extract, a ganoderma lucidum polysaccharide enrichment and a ganoderma lucidum triterpene enrichment are obtained, the material-liquid ratio of extraction is 1: (18-22), the extraction temperature is 60-80 DEG C, and the extraction time is 1-2 h; the multi-stage separation comprises the following steps: separating the extract by adopting a nanofiltration membrane with the molecular weight of 1000 to obtain ganoderma lucidum polysaccharide, and separating by adopting a nanofiltration membrane with the molecular weight of 500 to obtain ganoderma lucidum triterpenes. According to the preparation method, the purity of the beneficial components is effectively improved, the purity of the ganoderma lucidum polysaccharide can reach about 10%, the production cost of a ganoderma lucidum product is reduced, heavy metal and pesticide residues are obviously reduced, and the product safety is good.

The invention relates to an application method of an insulated feeder in evanescent mold casting and belongs to the technical field of evanescent mold casting. The application method of the insulatedfeeder in evanescent mold casting is characterized in that the application of the insulted feeder in evanescent mold casting is that during evanescent mold casting, the insulated feeder is additionally arranged on a casting part evanescent mold to increase the utilization ratio of molten iron, prolong the cooling time of the molten metal, enhance the feeding effect and increase the yield of casting parts. The application method of the insulated feeder in evanescent mold casting has the beneficial effects that the molten metal solidification time is long, metal is saved, the feeding effect is good, the utilization ratio of the molten iron and the yield are high, the molding sand and metal loss is reduced, the energy is saved, labor is saved, the production cost of the casting parts is reduced, and the application range is wide.