974results about How to "Fully broken" patented technology

The invention discloses a manufacturing method of a large-calibre seamless titanium alloy barrel body, which comprises the steps of: 1, casting: casting titanium alloy raw materials into a large-calibre titanium alloy barrel blank by using a vacuum smelting furnace and through a vacuum smelting method; 2, hot isostatic pressing: performing the hot isostatic pressing for the large-bore titanium alloy barrel blank in an inert protective atmosphere by using a hot isostatic pressing device; 3, mechanical machining: processing a chamfer angle for spinning at the head of the large-bore titanium alloy barrel blank after the hot isostatic pressing by using mechanical processing equipment to obtain a spinning barrel blank; 4, spinning: thermally spinning the mechanically processed spinning barrel blank with the total deformation rate not less than 60% for many times by using spinning equipment to obtain a large-bore seamless titanium alloy thin-wall barrel body; and 5, subsequent treatment. The production process has short process flow, high yield, low cost, high utilization rate of materials and easy realization, and the defects of the large-bore seamless titanium alloy barrel body, such as complex process, high cost, low yield and the like of the traditional production process can be effectively solved.

The present invention relates to a superplastic forming method for the titanium plate specially used for the plate type heat exchanger, which belongs to the field of mechanical processing technology. The present invention comprises the following steps that spongy titanium is chosen to be the melted raw material; the spongy titanium is placed in a vacuum plasma smelting furnace to be directly cast into plate base; the plate base forms a plate of a thickness of 2.0 to 2.4 mm after the process of heating, hot rolling, acid and alkali washing; second heating, hot rolling and acid and alkali washing and annealing; the plate of a thickness of 2.0 to 2.4 mm after the annealing in the vacuum smelting furnace forms a titanium plate of a thickness of 0.5 to 0.6 mm after the process of cold rolling, cleaning, second annealing and cold rolling, acid and alkali washing and third annealing. The present invention adopts the process that the spongy titanium which contains oxygen, iron and nitrogen of comparatively high content is directly processed into the titanium plate base in the plasma smelting furnace and directly rolled into the plate without forging and pressing.

The invention discloses a method for manufacturing large cake forgings of high-carbon and high-chromium cold working die steel. The method is characterized by comprising the following steps of: obtaining Cr12MoV or Cr12Mo1V1 steel by adopting primary smelting with an electric furnace, ladle refining and vacuum degassing process smelting; pouring the tapped steel to form a 6 to 9t octangular ingot; conveying the octangular ingot to a press at the temperature of more than or equal to 300 DEG C, forging the octangular ingot to a blank with the diameter of 300 to 700 millimeters, removing surface defects by annealing, polishing or turning and local grinding, performing cold saw cutting on the end face and blanking to form a cake blank; and heating the cake blank to the temperature of between 1,150 and 1,190 DEG C, upsetting and forging the cake blank by using the press, annealing and turning, and thus obtaining the large cake forgings of the high-carbon and high-chromium cold working die steel. By adopting the method, the yield is improved to 40 to 60 percent; and the manufactured large cake forgings of the high-carbon and high-chromium cold working die steel can comprehensively meet the requirements of hardness, impact toughness and the like and ultrasonic flaw detection quality.

The invention provides an axial embedded blast hole of a reinforced concrete beam and a blasting demolition method. The blast hole is formed in the mode that a pipe is embedded in the beam in the axial direction, continuous or discontinuous charging is adopted in the blast hole, a detonating fuse is arranged in the blast hole in an overall-length mode, a stirrup is cut off, and other technical means are taken. In this way, drilling operation is avoided, the number of blast holes and the number of detonators are reduced, consumption of explosive and the detonators is reduced, the smashing effect on reinforced concrete is improved, and the damage of explosion to the environment is reduced. The axial embedded blast hole of the reinforced concrete beam and the blasting demolition method can bring remarkable economic and social benefits.

The invention relates to a high-strength high-ductility low-density steel plate of the 1200 MPa grade and a manufacturing method thereof. The high-strength high-ductility low-density steel plate is prepared from the following components according to mass percent: 0.7 to 1% of C, 13 to 20% of Mn, 8 to 11% of Al, 1 to 4% of Ni, less than 0.1% of Si, less than 0.01% of S, less than 0.01% of P, 0 to 0.1% of Ti, 0 to 0.1% of Nb and 0 to 0.15% of V; the tensile strength is 1200 to 1300 MPa, the elongation is 30 to 40%, and the density is 6.5 to 7 g/cm<3>. The manufacturing method comprises the following steps of (1) smelting molten steel according to the components, and pouring; (2) heating to 1100 to 1200 DEG C, performing hot rolling after heat preservation, and performing water cooling to theroom temperature after hot rolling is finished; (3) heating to 900 to 1100 DEG C, and performing water cooling after heat preservation; (4) performing cold rolling after pickling; and (5) heating to800 to 1000 DEG C, and performing air cooling after heat preservation. The low-density steel plate has high strength and high ductility.

The invention discloses a preparation method for nickel-base superalloy powder for laser forming, and belongs to the field of superalloy and powder metallurgy. According to the preparation method, vacuum induction melting and argon atomization powder making technologies are adopted, and the nickel-base superalloy powder suitable for laser forming is prepared. The nickel-base superalloy powder prepared through the method is high in small grain size powder, high in degree of sphericity, low in oxygen content, good in flowing performance, free of hollow defects, less in satellite powder and capable of meeting the technical requirement for laser forming.

The invention discloses and provides a heavy metal polluted soil treatment system and process, aiming to solve the screening problem of magnetic heavy metal pollutants in polluted soil, which includes a first crushing and screening mechanism, a second crushing and screening mechanism, and a transfer and conveying mechanism And the lifting mechanism, through the oblique lifting and throwing of the heavy metal contaminated soil after the initial crushing to the screening rake with magnetic adsorption, the secondary crushing of the heavy metal contaminated soil is carried out by the screening rake, and the heavy metal contaminated soil is sucked out by magnetic adsorption The magnetic heavy metals contained in it improve the quality and efficiency of heavy metal pollutants in the subsequent treatment process.

The invention provides a preparation method for fine metal powder and equipment achieving the method. On the one hand, metal materials are fused and atomized into liquid drops to be sprayed to a high-speed rotation disc and smashed into small liquid drops, and the center spraying axis of the liquid drops is perpendicular to the rotation disc face; on the other hand, the liquid drops sprayed to the high-speed rotation disc are cooled after being smashed, and the metal powder is obtained. Compared with the prior art, the metal powder prepared through the method is fine in grain size, good in degree of sphericity and narrow in grain size distribution range and has good application prospects.

The invention discloses an electric arc preheating repair welding method for a stir friction plug, relates to a repair welding method for the stir friction plug and aims to solve the problem of poor continuous flowability of a material because a stirring needle is broken before complete plastic deformation and flow under the action of strong resisting force of a material at a repair welding position of the stir friction plug. The method comprises the following steps of: 1, performing electric arc preheating on a key hole left by friction stir welding or secondary friction stir welding repairing, namely, putting a circular ring at a key hole position until the center of the circular ring is coincided with that of the key hole, performing electric arc heating on the circular ring by using a tungsten electrode argon arc welding machine at the temperature of between 180 and 200 DEG C and transferring heat to a region needing repair welding after the circular ring is heated so as to preheat the key hole in the region needing repair welding, wherein the central pore diameter of the circular ring is greater than that of the key hole; and 2, performing repair welding on the key hole, namely, during repair welding, moving a welding tool towards a welding direction by 1 to 5 millimeters and allowing the stirring needle to undergo plastic deformation and flow so as to fill the key hole. The method is used for performing repair welding on the weld defects of the stir friction welding and the key hole.

The invention relates to the technical field of nonwoven fabrics and particularly discloses a waste recovery device for nonwoven fabric processing. The waste recovery device comprises a pressing chamber, a crushing chamber and a screw extruding chamber in sequential connection. The pressing chamber is used for compacting nonwoven fabric waste; the crushing chamber is used for crushing the nonwovenfabric waste; the screw extruding chamber is used for heating and melting the nonwoven fabric waste. The side wall of the top end of the pressing chamber is provided with a feeding port, a repeated pressing mechanism is arranged in the pressing chamber, a pushing-out mechanism is arranged at the bottom end of the pressing chamber, a two-stage crushing mechanism is arranged in the crushing chamber, and a shearing extrusion mechanism is arranged in the screw extruding chamber. The waste recovery device has advantages that leftover materials cut in a nonwoven fabric processing process can be comprehensively recovered, various mechanical functions are integrated, the problem of proneness to entangling of cutting parts in nonwoven fabric cutting in the prior art is solved, and potential safetyhazards are avoided.

The invention provides a tantalum target and a manufacturing method thereof; the manufacturing method comprises the steps: firstly, performing a first forging to a tantalum ingot and obtaining a primary forged blank; performing a second forging and a first thermal treatment to the primary forged blank obtained in the previous step and obtaining a secondary forged blank; performing a third forging and a second thermal treatment to the secondary forged blank obtained in the previous step and obtaining a tertiary forged blank; performing a fourth forging and a third thermal treatment to the tertiary forged blank obtained in the previous step and obtaining a quartus forged blank; and finally, rolling and performing a fourth thermal treatment to the quartus forged blank obtained in the previous step and obtaining the tantalum target; the first forging is a rotary forging; the temperature of the first forging is 800-1400 degrees centigrade. The prepared tantalum target is uniform in texture distribution, small in grain size and capable of satisfying usage requirements in high-level semiconductor film-coating industries.

The invention relates to a biosynthesis preparation method for ergothioneine, and a fermentation culture medium. The method comprises the following steps of S1: inoculating Hericium erinaceus myceliumslant cultures to a liquid seed culture medium to be cultured to obtain seed liquid; S2: inoculating the obtained seed liquid to the fermentation culture medium to be fermented, adding precusor substances for culturing, and fermenting to a fermentation destination through pH (Potential of Hydrogen) judging a fermentation liquor; S3: after fermentation finishes, adding enzyme, carrying out enzymolysis to the destination, raising the temperature to kill enzyme, and lixiviating the ergothioneine in the cell of the mycelium to the fermentation liquor out of the cell. By use of the method disclosed by the invention, the yield of the ergothioneine can be improved, the fermentation destination can be quickly and simply judged, fermentation byproducts are reduced, the enzyme is used for breakingmycelium cells, and ergothioneine is safe to be lixiviated.

The invention relates to a grinding device, in particular to a graphite powder multistage grinding device for new energy battery production. The technical problem to be solved by the present invention is to provide a graphite powder multistage grinding equipment for new energy battery production that can fully crush graphite and automatically add graphite for grinding. In order to solve the above technical problems, the present invention provides such a graphite powder multi-stage grinding equipment for new energy battery production, including a box, a filter screen, a mounting plate, a motor, a first rotating rod, a connecting rod, a storage box, etc.; The bottom wall of the box is connected with a filter screen, the lower side of the right wall of the box is connected with a mounting plate, the motor is installed on the right side of the top of the mounting plate, the output shaft of the motor is connected with the first rotating rod, and the upper side of the left wall of the box is connected with a connecting rod . The present invention designs a graphite powder multi-stage grinding equipment for new energy battery production. The first rotating rod drives the moving plate to move left and right so that the graphite is intermittently dropped from the storage box into the box.

The invention provides a preparation method of a 650 DEG C high-temperature titanium alloy sheet for superplastic forming. The preparation method adopts hot rolling machining to obtain 650 DEG C titanium alloy sheets with excellent superplastic properties. The preparation method comprises the steps that (1) after a 650 DEG C titanium alloy casting ingot is heated, cogging and forging are carried out, and a sheet blank for titanium alloy rolling is obtained; (2) after the obtained sheet blank is coated with a coating and is heated, cogging and rolling are carried out on a rolling machine; (3) after the sheet blank is heated, second rolling is carried out; (4) after the sheet blank is subjected to heat treatment above the beta phase transformation point, rapid water quenching cooling is carried out; (5) after the sheet blank is heated, third hot rolling is carried out; (6) after the sheet blank is heated, fourth reversing hot rolling is carried out; (7) the obtained blank is assembled and welded, and a coated overlapping rolling package is obtained; (8) after the overlapping rolling package is heated, hot rolling is carried out, and a semi-finished sheet is obtained; and (9) after the semi-finished sheet is subjected to creep deformation and forming correction, annealing and acid and alkali washing, a finished 650 DEG C titanium alloy sheet with thickness of 0.8-2.0 mm is obtained.

The invention provides a method of making mangel immune polysaccharides and yeasts extract, belonging to the technique field of preparing biological products, such as polysaccharides, by yeasts. Said method includes the following steps: brewers' yeast residue bitter-removing, foreign substance-removing, brewers' yeast autolysis, brewers' yeast complex enzymolysis and deactivation, segregation of polysaccharides and protein hydrolysate liquid, blink spray drying of mangel immune polysaccharides and yeasts extract, etc; it is characterized on: high yield, good quality, low cost, and could achieve the aim of preparing mangel immune polysaccharides and yeasts extract at the same time from identical yeast material, enhance the availability ratio of yeasts, avoid pollution to the environment in traditional method as a result of simply preparing one certain product and discharging other assistant liquid.

The invention discloses a method for processing cold-making green tea, comprising the following steps of: deactivating enzymes of fresh tea leaves by a vacuum microwave method, carrying out vitrification, followed by ultramicro crushing, carrying out vacuum freeze drying, crushing caking tea, packing by the use of a tea filter bag, and carrying out vacuum packing by the use of a plastic-aluminum bag for external packing, so as to prepare the cold-making green tea product. The vacuum microwave method for deactivating enzymes has advantages of rapid speed for killing enzyme and low action temperature; ultramicro crushing after vitrification realizes full crushing of tea under the low-temperature condition; and vacuum packing avoids oxidation, moisture absorption and browning of the product during the storage process. The cold-making green tea has advantages of good color, excellent flavor and rapid cold-making speed.