351results about How to "Organizational stability" patented technology

Devices, systems and methods related to endoscopic surgery, particularly related to robotic surgical operations, provide a tissue stabilizer for endoscopically stabilizing a target tissue within a patient's body. For stabilizing a beating heart during a closed-chest coronary artery bypass grafting procedure, a stabilizer is inserted through an endoscopic cannula and provides sufficient surface area to contact the heart and effectively stabilize the target tissue area. The stabilizer can straddle a blood vessel, such as a coronary artery, which is targeted for an anastomosis. Vessel occlusion fasteners may occlude the target blood vessel prior to the anastomosis procedure.

The invention relates to high-toughness and hydrogen sulfide corrosion resistant round steel and a manufacturing method thereof. The round steel comprises, by mass, 0.25-0.40% of C, 0.20-0.45% of Si, 0.95-1.50% of Mn, 1.35-1.90% of Cr, less than or equal to 0.002% of S, less than or equal to 0.008% of P, 0.75-1.30% of Mo, 0.10-0.30% of Ni, 0.05-0.25% of V, 0.010-0.050% of Nb, 0.10-0.30% of Cu, less than or equal to 0.050% of Al, 0.0005-0.005% of Ca, and the balance Fe and unavoidable impurity elements. The hot-rolled round steel is produced through a process route of continuous casting-continuous rolling-annealing, the round steel is subjected to heat treatment directly, or a machined semi-finished drill tool is subjected to heat treatment. On the premise that related 130KSI and 135KSI synthesized mechanical properties are met correspondingly, according to an America NACE TM0177 standard hydrogen-sulfide-resistant stress corrosion test, a product is not broken for 720 hours under the condition that 70% of nominal yield stress is pre-loaded in a saturated H2S solution. The material is suitable for 130KSI-strength-grade and 135KSI-strength-grade drill tools under the mining environment of acidic oil and gas fields.

The invention provides a fresh and cool enzymolysis grain beverage and a preparation method thereof, relating to a non-alcoholic beverage. The invention aims to provide a fresh and cool enzymolysis grain beverage which retains original nutrition and functional components of grains and is fine, fresh and cool in taste, stable in product composition and low in viscosity, and a preparation method thereof. The beverage is prepared from the following raw materials: 8-12% of grains, 0.01-0.2% of sodium citrate, 0.01-0.4% of emulsifier, 0.05-0.5% of stabilizer, 1.0-2.3% of processing auxiliary agent and the balance of water. The preparation method comprises the steps of: pre-cooking or baking the grains, carrying out colloid milling and homogenizing, adding the processing auxiliary agent, carrying out enzymolysis, then inactivating the enzyme, separating, and filtering to obtain coarse fiber and a material liquid C; adding the material liquid C, sodium citrate, emulsifier and stabilizer to hot water, diluting to certain volume with blending water to obtain a blended liquid, cooling, then conveying to an ultrahigh-temperature instantaneous sterilizing system, preheating, degassing, homogenizing, and then carrying out ultrahigh-temperature instantaneous sterilizing; and filling the blended liquid after ultrahigh-temperature instantaneous sterilizing, and then packaging.

The invention provides a high efficient submerged arc additive manufacturing method for a metal component with good mechanical property. The metal component submerged arc overlay welding forming method is as follow: two poles of a welding power supply are connected with a welding gun and a base material respectively, a particle-shaped welding flux and a metal welding wire are synchronously conveyed to the surface of the base material, the power is switched on, an electric arc is generated between the welding wire and the base material under the coverage of the welding flux, so that the surfaces of the welding wire and the base material locally melt, a weld pool is formed on the surface of the base material, the welding wire and the welding flux are continuously conveyed, the relative movement track of the welding gun and the base material is controlled according to the component digital to analog data, and a metal component is formed through layer-by-layer overlay welding deposition on the base material.

The invention discloses a mineral high-strength wear-resistant material which is prepared from the following raw materials in percentage by weight: 0.30-0.50% of C, 0.10-0.65% of Si, less than or equal to 1.0% of Mn, 1.0-4.5% of Cr, 0.05-3% of Ni, 0.15-1.5% of Mo, 0.05-0.5% of V, 0.010-0.5% of Nb, 0.01-0.5% of Al, less than or equal to 0.025% of P, less than or equal to 0.015% of S and the balanceof Fe. A chain wheel manufactured from the mineral high-strength wear-resistant material is excellent in alloy element proportion, is pure in steel, is uniform in structure, has excellent comprehensive performance, is high in chain gear hardness, is uniform in hardness and is good in wear resistance; and meanwhile, a base body part has good impact toughness and strength. The defects that a commonChinese chain wheel is poor in comprehensive performance and is low in coal passing amount are solved. The mineral high-strength wear-resistant material greatly improves the coal passing amount of the chain wheel, reduces chain wheel use cost, and improves economic benefits.

The invention discloses a production technology of a thin-gauge, ultra-low iron loss, low-noise and high-magnetic induction oriented silicon steel sheet. The oriented silicon steel sheet comprises the following components in percentage by weight: 0.003-0.05 percent of C, 4.1-9 percent of Si, 0.05-0.5 percent of Mn, 0.02-0.06 percent of Al, 0.01-1 percent of Sn, 0.05-0.1 percent of Mo, 0.2-1 percent of Cu, 0.003-0.02 percent of N, 0.002-0.06 percent of P, 0.001-0.008 percent of S and the balance of iron and other inevitable impurities. The high-magnetic induction oriented silicon steel sheet which is produced through hot rolling, cold rolling and annealing processes and the like has the superior performances such as ultra-low iron loss, high flux density, low magnetostriction coefficient and small thickness, has the advantages of simple process, stable texture and capabilities of greatly saving the materials and saving the resources while guaranteeing that the capacity of a transformer is unchanged, and is the best candidate material for manufacturing high-grade power transmission and distribution transformer cores at present.

One kind of titanium alloy surface wear-resisting coating flame spurts welds the technique, this craft through increases the surface in the superficial pretreatment craft to soak the zinc activation working procedure, and gater two into one, the surface decontamination working procedure with it; Simultaneously had reasonably determined in the technological process essential parameter, is concrete is: Treats spurts the surface roughness is Ra25~~12.5, the preheating temperature is 230~~270deg.C, when heavy melt the liquid state resident time is 20~~60S; And after spurts welds carries on 'to it the tempering' heat treatment, the heat treatment temperature range is 200~~600deg.C, guarantees the wet time is 0.5~~2H and so on a series of crafts measure, successfully brings to completion in the titanium alloy surface preparation gathers the performance fine flame to spurt welds the wear-resisting coating, better solution project practice implementation flexible question.

The invention discloses an environmental-friendly zinc-aluminum damping alloy and a preparation method of the environmental-friendly zinc-aluminum damping alloy. The alloy is made of, by weight percentage, 15%-27% of Al, 0.01%-0.1% of Ti, 0.1%-0.2% of rare earth, 0.02%-0.62% of Cu, 0.01%-0.5% of Mg and the balance Zn, and the sum of the weight percentages is 100%. Through the alloying and heat treatment processes, the microstructure of the alloy is obviously refined and uniformized, and the mechanical property of an existing zinc-aluminum alloy is improved. Compared with the existing zinc-aluminum damping alloy, according to the environmental-friendly zinc-aluminum damping alloy, alloy compositions do not contain silicon and lead, machining and cutting are easy, the alloy is not broken easily, environmental protection and zero pollution are achieved, and the alloy has good damping performance. The novel zinc-aluminum damping alloy can be used as a shock absorbing material and is widely used in the fields of building materials, electronics, general machines and the like.

The invention discloses a double-sided titanium steel composite plate taking IF steel as a transition layer and a high-temperature preparation method thereof. A composite blank for preparing the composite plate comprises a base material, the IF steel and a titanium composite material, wherein the base material is plain carbon steel or low alloy steel with C less than or equal to 0.22%, the titanium composite material is industrial pure titanium TA2, the thickness ratio of the base material to the titanium composite material is 5-10, the length and width of the titanium composite material are smaller than those of the base material, and the margin between the titanium composite material and four sides of the base material is 60-100 mm; and the vacuum welded composite blank is heated to 1040-1060 EDG C for heat preservation, the heat preservation time is 1 min/mm * the total thickness of the composite blank, the initial rolling temperature is 1020-1040 DEG C, the single-pass reduction rate is 15%-25%, the total reduction rate is greater than or equal to 70%, the finish rolling temperature is greater than or equal to 850 DEG C, air cooling is carried out to a room temperature, the thickness of the rolled IF steel transition layer is 280-320 [mu]m, and the double-sided titanium steel composite plate with the thickness of 6-75 mm is obtained after plate splitting, and excellent corrosion resistance and mechanical properties are achieved.

The invention relates to a machining method for improving the form and position precision of a large gearbox body device. The processing method comprises the following steps: marking out, performing rough machining on the subdivision surface and a semi-axle hole of each separated gearbox body, performing artificial failure, marking out secondarily, carrying out semifinishing on the subdivision surface and the semi-axle hole of each separated gearbox body, performing natural failure, performing finishing on the subdivision surface of each separated gearbox body, assembling a gearbox body device, performing finishing on the axle holes of the gearbox body device, and checking finally. According to the machining method, since semifinishing and finishing of each separated gearbox body and the gearbox device are performed by the same machine tool on the same locating basis, the machining precision is greatly improved.

The invention relates to a low-temperature angle steel and a manufacturing method thereof, and belongs to the field of low-temperature steels. The angle steel has excellent low-temperature toughness at the temperature of above 40 DEG C below zero, the yield strength of the angle steel reaches 350MPa, and the angle steel is suitable to be used as a power transmission iron tower material under the low-temperature conditions of high cold regions. The angle steel comprises the following chemical components in percentage by weight: 0.05 to 0.18 percent of C, 0.5 to 1.7 percent of Mn, 0.01 to 0.55 percent of Si, 0.005 to 0.01 percent of Ga, 0.01 to 0.08 percent of V, 0.02 to 0.08 percent of Nb, 0.001 to 0.005 percent of Ca, 0.005 to 0.05 percent of Ti, 0.01 to 0.06 percent of Als, 0.15 to 0.25 percent of Cu, 0.0005 to 0.002 percent of B, 0 to 0.01 percent of P, 0 to 0.005 percent of S, and the balance of Fe and inevitable impurities. The angle steel has the advantages of simplicity in process, purity, tissue stability, yield strength of more than 350MPa and excellent low-temperature toughness at the temperature of above 40 DEG C below zero; and by adopting the alloying principles of multiple elements and low quantity, the angle steel has high and low-temperature performance and low cost.

The invention discloses a high-temperature and high-strength titanium alloy and a processing method thereof. Alloy components, a preparation method, thermal deformation, thermal treatment and other elements are included. The alloy components include, by weight, 5.00-6.70% of Al, 3.00-5.00% of Sn, 2.5-7.50% of Zr, 0.3-2.0% of Mo, 0.25-1.5% of Si, 0.30-1.00% of Nb, 0.50-2.00% of Ta, 0.20%-1.60% of W, 0.02%-0.1% of C, 0.1%-1.5% of B and the balance Ti and inevitable impurity elements. The alloy material can be obtained through a smelting method and a powder metallurgy sintering method, then a forged piece product is obtained through combination of thermal deformation and a thermal treatment process, the forged piece prepared through the process is of a double-state structure, and the materialhas high strength and good plasticity within the range from the room temperature to 700 DEG C. The alloy can be used for manufacturing aerospace key parts used for a long time at the temperature being 600-700 DEG C, and can also be used for temperature-resistant structural parts, such as aerospace crafts, used for a short time at the temperature being 700-750 DEG C.

The invention relates to ferrite stainless steel which includes rare earth element yttrium and is used for a solid oxide fuel cell. The invention is characterized in that the invention comprises the following elements according to the mass percent: Y is 0.01 to 0.10 percent, C is lower than 0.03, Mn is 0.40 to 1.20 percent, Ni is 0.20 to 0.26 percent, Cr is 14.00 to 26.00 percent, Mo is 0.02 to 2.00 percent, W is 0.01 to 0.10 percent, P is lower than 0.04 percent, S is lower than 0.03 percent, Si is 0.01 to 0.05 percent, the residual is Fe; the thermal expansion coefficient is in the range of (11.8 to 13.0) is multiplied by 10 <-6> K at 25-1000 DEG C, and preferred in the range of (12.0 to 12.5) is multiplied by 10 <-6> K, and ferrite stainless steel alloy material is the alloy material which is particularly suitable for connecting and encapsulating the negative electrode and the positive electrode of the moderate temperature type solid oxide fuel cell, or can be used as the lighter of a vehicle engine, or can be used for high temperature boiler heating parts. The alloy is easy for the domestic industrial smelting and the processing formation, the manufacture cost is low, the alloy is suitable for the commercialization production, and has very high promotion and application value.

A stuffing metal grain for soldering with diameter of 0.1-5.0mm, with the mass percentage of C less than 0.15%, S less than 0.035%, P less than 0.035%, oxygen less than 50ppm, nitrogen less than 50ppm, with other alloy elements like Mn being 0.1%-2.0%, Si 0.02%-1.8%, Mo less than 2.5%, Cr less than 3.5%, Ni less than 6.0%, Ti less than 0.5%, V less than 0.5%, Nb less than 0.5%, Cu less than 0.5%, and B less than 0.09%. It is simple in process, with greatly reduced cost.

The invention relates to a high-temperature liquid-state steel slag granulating device and process. The high-temperature liquid-state steel slag granulating device comprises a liquid-state steel slag pouring system and a steel slag granulating system, wherein an atomizing nozzle of a cooling water spraying device in the steel slag granulating system is connected with an air cavity of an air spraying device, the air spraying device is provided with a spraying panel with an adjustable angle, the angle of the spraying panel, and air pressure in the air cavity and air quantity of an air nozzle are adjusted so that liquid-state steel slag is blown to do parabolic flight, and the liquid-state steel slag fully reacts with air and moisture in the flying process to form granulated steel slag spheres. According to the invention, a structure with upper and lower layers of nozzles is adopted, thus the steel slag is atomized twice in the flying process, atomization efficiency of the steel slag is greatly improved; explosion effect generated by cooling water and high-temperature steel slag is utilized to ensure that the steel slag is granulated more fully; meanwhile, dissociative calcium oxide and magnesium oxide can be digested, and a glass-state layer of a spinel structure is formed on the surface of the steel slag, thus tissue structure is smaller and more stable.

The invention discloses a precise CRDM part casting forming method. The precise CRDM part casting forming method comprises the steps that 1, a ceramic mold shell matched with design shape is manufactured in an investment mode according to the design shape of a CRDM claw and/or a connecting rod; 2, the ceramic mold shell is preheated under the condition of the temperature ranging from 850 DEG C to 1100 DEG C, the temperature is kept for 1-5 hours, and temperature uniformity of all positions of the ceramic mold shell is ensured; a stellite ingot is molten under the condition of the temperature ranging from 1400 DEG C to 1500 DEG C and is cast into the well-preheated ceramic mold shell, and a casting is formed after solidification; 3, mold shell is cleaned, and the casting is subjected to heat preservation under the condition of the temperature ranging from 850 DEG C to 950 DEG C and then is subjected to air cooling for 610 hours. The forming of the connecting rod and/or the claw part for a CRDM is reliably achieved by means of an investment casting technology, forming operation is easy, finished product rate is high, and a formed connecting rod and/or the claw part has even texture, is long-acting and abrasion-resistant, is reliable and stable in use and can effectively meet the technological requirements.

The invention discloses a heat treatment method for improving mechanical property of GH738 bolt type products. The GH738 bolt type products are subjected to head molding and heading through a solid solution state material, then stabilizing treatment is conducted, then primary aging treatment is conducted, then secondary aging treatment is conducted, and thus heat treatment of the GH738 bolt type products is finished. During secondary aging treatment, much more high-density gamma' strengthening phases are separated out, so that much more gamma' strengthening phases with smaller size and large degree of dispersion and much more carbide are obtained, the alloy is strengthen sufficiently, and accordingly the mechanical property of the GH738 bolt type products is improved. By the adoption of the heat treatment method, the technical problem that the mechanical property usually cannot meet the requirements in ordinary heat treatment production is solved, and the prepared GH738 bolt type products can be applied and popularized in the field of aero-engines.

The invention discloses a heat treatment process of a titanium alloy, and belongs to the technical field of material science. The heat treatment process is mainly as follows: the heating temperature T of the first heating treatment is greater than or equal to (Tbeta-50) DEG C and less than or equal to (Tbeta+60) DEG C, the holding time t is equal to eta 1*delta max, the delta max is the maximum section thickness of a titanium alloy forged piece, the eta 1 is a heating coefficient, the value of the heating coefficient is 0.6-1.5min/mm, after the heat preservation on the forged piece is completed, the forged piece is discharged from a furnace and is subjected to air cooling, wind cooling, oil cooling or water cooling to a room temperature; the heating temperature T of the second heating treatment is greater than or equal to 650 DEG C and less than 780 DEG C, the holding time t is equal to (eta 2*delta max)/2, the delta max is the maximum section thickness of the titanium alloy forged piece, the eta 2 is a heating coefficient, the value of the heating coefficient is 0.3-1.2min/mm, after the heat preservation on the forged piece is completed, the forged piece is discharged from the furnace and is subjected to air cooling to a room temperature; and the heating temperature T of the third heating treatment is greater than or equal to 480 DEG C and less than 650 DEG C, the holding time t is greater than or equal to 240min and less than or equal to 600min, and after the heat preservation on the forged piece is completed, the forged piece is discharged from the furnace and is subjected to air cooling to a room temperature. The heat treatment process solves the problems that after near-beta, metastable beta-type and fully-stable beta-type titanium alloys are subjected to solution treatment and ageing, the side and heart of the forged piece have large difference in structure properties, and is particularly suitable for preparing the high-strength titanium alloy forged piece with uniform structure properties and a large section/variable cross section.

A heat treatment method for a cast aluminum alloy gearbox comprises the following steps that A, solid solution treatment is carried out on the cast aluminum alloy gearbox, wherein the temperature of solid solution treatment is 530-540 DEG C, the heat preservation time is n1 hours, and n1 is equal to the value obtained after dividing the largest wall thickness by 25 mm and then plus 1; B, after solid solution treatment is finished, water is immediately added into the gearbox, wherein the duration is not longer than 25 s, and the quenching temperature is 60-70 DEG C; C, after quenching is finished, the gearbox is immediately transferred into a furnace for ageing treatment in the two following modes, wherein the ageing temperature is 200-210 DEG C, and gearbox is taken out of the furnace forair-cooling after 7-9 hours of heat preservation; the ageing temperature is 170-180 DEG C, the heat preservation time is n2 hours, n2 equals to the value obtained after dividing the largest wall thickness by 25 mm and then plus 2, and vibration aging treatment in the cooling process is immediately carried out after the gearbox is discharged from the furnace. According to the method, internal stress can be fully removed while ideal high comprehensive mechanical performance is achieved, so that the structure and size of the gearbox are stable, and deformation of the subsequent finish machining size and precision cannot be caused.