54 results about "Wall thinning" patented technology

Embodiments of the present disclosure are directed to methods of manufacturing steel tubes that can be used for mining exploration, and rods made by the same. Embodiments of the methods include a quenching of steel tubes from an austenitic temperature prior to a cold drawing, thereby increasing mechanical properties within the steel tube, such as yield strength, impact toughness, hardness, and abrasion resistance. Embodiments of the methods reduce the manufacturing step of quenching and tempering ends of a steel tube to compensate for wall thinning during threading operations. Embodiments of the methods also tighten dimensional tolerances and reduce residual stresses within steel tubes.

Magnetostrictive transducers for monitoring wall thinning in a pipe, and an apparatus and method for monitoring wall thinning in a pipe using magnetostrictive transducers are provided. The magnetostrictive transducers generate broadband multimode shear horizontal (SH) waves, and allow the generated SH waves to travel along the pipe, thus correctly monitoring a status of the wall thinning of the pipe. The apparatus includes a transmitting transducer which is installed outside of a pipe and generates shear horizontal (SH) waves traveling along the pipe, a receiving transducer which is spaced apart from the transmitting transducer and measures the shear horizontal (SH) waves traveling along the pipe, and a controller for monitoring wall thinning of the pipe by exciting and measuring output signals of the transmitting and receiving transducers.

The invention provides a creating method for a virtual double-bridge crane based on Virtools, which comprises the steps of: (1) creating models of parts and components of a crane in SolidWorks by operations of stretching, rotating, wall thinning, arranging a characteristic array and punching, assembling the parts according to assembly relation, and outputting the models in a .stl format; (2) leading out the assembled crane, and introducing the models in a 3DS Max environment to edit and amend an integral crane model; (3) introducing the output .nmo scenes and models to the Virtools for optimization, test and recombination, and designing by a behavior interaction module provided by the Virtools; and (4) issuing the created virtual crane system in a .vmo format through the Virtools, and the client can access to the system via an IE browser after mounting a Virtools Web Player. The invention has the advantages of high efficiency, low cost and good instantaneity.

The invention relates to a boiler four-pipe real-time service life evaluation method considering wall thickness reduction and overheating influence, and belongs to the technical field of metal materials. The method comprises the following steps: (a) calculating the pipe wall thinning condition by a system according to the operating environment and material characteristics of four pipes of a boiler; (b) calculating the thinning rate of four pipes of the boiler, and (c) calculating the remaining life of the thinned boiler pipe according to a strength checking theory; (d) calculating the stress of the position of the weld joint for the boiler pipe with the weld joint; (e) correcting the remaining life; (f) evaluating the service life of the boiler tube from the perspective of the temperatureand the lasting strength of the boiler tube; (g) correcting and calculating the service life of the boiler tube under the condition of exceeding the designed and calculated wall temperature and overheating; and (h) evaluating and calculating the comprehensive service life Rf of the boiler tube under the combined action of wall thickness reduction and overheating. According to the method, the failure factors of the four pipes of the boiler can be comprehensively covered, and the state and the service life can be accurately evaluated.

The invention discloses a chloridization corrosion resistant double-layer structure alloy coating for a heating surface of a garbage incinerator. The double-layer structure comprises a chloridizationcorrosion resistant bottom layer and a solid particle erosion resistant surface layer, wherein the chloridization corrosion resistant bottom layer comprises components in percentage by mass as follows: 20%-23% of Cr, 8%-10% of Mo, 3.15%-4.15% of Nb, 5% of Fe, 1% of Co, 0.5% of Mn, 0.5% of Si, 0.4% of Al, 0.4% of Ti and the balance of Ni and inevitable impurities; the solid particle erosion resistant surface layer comprises components in percentage by mass as follows: 80% of NiCr and 20% of Cr3C2; the chloridization corrosion resistant bottom layer in the double-layer structure coating is prepared with an activated combustion HVAF (high velocity air fuel) spraying process; the solid particle erosion resistant surface layer in the double-layer structure coating is prepared with an HVOF (highvelocity oxygen fuel) spraying process. The problems of pipe wall thinning and pipe explosion caused by the fact that the heating surface of the garbage incinerator is easily corroded by high-temperature chloride and eroded by solid particles are solved, and the service life and the maintenance cycle of pipes on the heating surface of the garbage incinerator are prolonged greatly.

The invention discloses a method for manufacturing a special-shaped pipe. The method includes the following steps: Step 1: melting and casting; using a high-temperature device to melt the finished copper plate material from a solid state to a liquid state, extruding and forming a copper pipe blank through a mold, and oxidizing it The surface is oxidized and washed; step 2: compression, stretching, coil drawing and cutting; the hollow copper tube raw material is compressed into a hollow copper tube semi-finished product, and the diameter of the tube wall is from thick to thin. The semi-finished product is stretched, the stretching force is 300-400KN, the stretching speed is 120-180m/min, the diameter of the pipe wall becomes thinner, and the copper round pipe is transported to the coil drawing equipment for secondary stretching. Copper tubes are stretched into different diameters, and copper tubes of different diameters are cut according to classification. The invention adopts the production method of special-shaped tubes, which solves the problem that the refrigeration medium is not easy to circulate, has high production efficiency, saves resources, produces high-quality products, and can ensure smooth circulation of the refrigeration medium.

The invention relates to an aluminum alloy radiating fin for a heat exchanger. The aluminum alloy radiating fin comprises the composition by the weight percentage: 0.3-0.5% of silicon, 1.8-2.0% of manganese, 0.05-0.08% of nickel, 0.3-0.5% of copper, 0.01-0.03% of magnesium, 0.1-0.3% of iron, 1.5-2.0% of zinc, 0.001-0.0015% of yttrium, 0.01-0.03% of titanium, 0.0001-0.00015% of boron, and the balance being aluminum and inevitable impurities. Wall thinning and weight lightening of the aluminum alloy radiating fin for the heat exchanger become possible, and in addition, the reliability of a heat radiating fin material and the heat exchanger is improved.

The invention discloses a low smell and scratch resistant thin-wall material and a preparation method thereof. The low smell and scratch resistant thin-wall material is prepared from the following rawmaterials of, in parts by weight, 20-30 parts of homo-polypropylene, 45-55 parts of co-polypropylene, 10-15 parts of ultramicro fine talcum powder, 10-15 parts of flexibilizers, 0.2-0.6 part of an antioxidant, 2-5 parts of scratch resistant agents, 0.15-0.5 part of a lubricating agent, and 0.5-1.0 part of other assistants. The surface scratch resistance of the material can be improved, wall thinning of automobile parts can be achieved, and the material cost is lower.

The invention discloses a compound de-foaming agent suitable for bottle ware glass production. The compound de-foaming agent mainly comprises a main component and a solvent component, wherein the main component comprises a foam breaker composed of titanium compounds, a foam wall thinning agent composed of sodium nitrate and potassium nitrate and a solvent combustion efficiency optimizer ferrocene; the solvent component contains diesel oil, aviation kerosene, heavy oil or mixture thereof at any ratio; the flashing point of the solvent is at 38 DEG C or above; and the main component is dissolved in the solvent or is suspended in the solvent in a sold particle state. The compound de-foaming agent disclosed by the invention can form new small bubbles on a floating molten glass bubble wall so as to achieve the function of thinning the foam wall, and meanwhile, can boost the foam breaking in the manner of reducing the local viscosity and surface tension of the bubble wall so as to accelerate the breaking of bubble layers on the molten glass surfaces in different temperature areas of a kiln without increasing the highest temperature of a bottle ware kiln, so that the foam discharging efficiency of the molten glass can be increased, and the influence of the bubble defects of the bottle ware glass can be reduced.

The invention discloses a PPO/PA alloy material suitable for wall thinning and a preparation method thereof. The PPO/PA alloy material is composed of following six components in parts by weight: 10 to60 parts of PPO resin, 20 to 70 parts of PA resin, 3 to 10 parts of compatilizer, 5 to 15 parts of flexibilizer, 1 to 5 parts of flow modifier, and 0.1 to 1 part of antioxidant. The alloy material has the advantages that the flow modifier greatly improves the flowing performance of the alloy material, and the modified material can be used to prepare large size thin wall parts by injection moulding.

A method for manufacturing a hydroforming member includes the step of providing a blank (10). The blank (10) is defined by blank wall (16). The blank (10) is placed in a die assembly (14) having a die cavity (12) defined by a die surface (24). The blank (10) is expanded so that the blank wall (16) is forced against the die surface (24) to form the hydroformed member. A portion of the blank wall conforms against a wall-thinning element (26, 28) positioned along the die surface (24) to form a removable wall section (46, 50) in a portion of the blank wall (24). The removable wall section (46, 50) is then removed from the blank wall (16) to form an opening in the hydroformed member.

The invention discloses a bobbin chuck device capable of facilitating extracting a bobbin with a chuck piece certainly separated from the bobbin in releasing and extracting the bobbin from a bobbin holder, and capable of attaining wall thinning and high-speed handling of the bobbin holder. A chuck piece 3 includes a first member 5 for the bobbin 52 and second members (4, 6) for a rotating cylinder 51. The first member 5 and the second members (4, 6) relatively approach or are separated from each other in the axial direction of the rotating cylinder 51, so that the first member 5 and the second members (4, 6) are respectively energized toward or released from the bobbin 52 and the rotating cylinder 51. When the first member 5 and the second members (4, 6) are relatively moved so that both of the members may be respectively energization-released, both of the members are kept in mutual engagement, and an engagement part for separating the first member 5 from the bobbin 52 is provided on the first member 5 and the second members (4, 6) respectively.

The invention discloses a composite debubbling agent applicable to liquid crystal glass production. The composite debubbling agent mainly comprises a main component and a solvent component, wherein the main component comprises a titanium compound-containing bubble breaker, a bubble wall thinning agent consisting of tin oxide and magnesium sulfate, and a solvent combustion efficiency optimizer pentadiiron; the solvent component contains diesel, aviation kerosene, heavy oil or a mixture thereof according to any ratio; the flash point of the solvent is higher than or equal to 38 DEG C; the main component is dissolved in the solvent or suspended in the solvent in the state of solid particles. Through the formation of new small bubbles on the walls of floating bubbles in glass liquid, the effect of thinning the bubble walls is achieved; moreover, through reduction of the local viscosity and the surface tension of the bubble walls, bubble breakage is promoted so as to achieve the purpose that breakage of the bubble layers on the surface of the glass liquid in different temperature zones of a kiln can be accelerated, without needing to raise the maximum temperature of the liquid crystal kiln, so that the bubble removing efficiency of the glass liquid is improved and the influence caused by liquid crystal glass bubble defects is reduced.

The invention provides a conventional island pipe wall thinning detecting device and method for a nuclear power plant. The device includes a temperature measuring probe which is arranged at an outer pipe wall surface of a to-be-detected pipe and is used for measuring the temperature of the outer pipe wall surface of the to-be-detected pipe, a middle storage device used for receiving and storing atemperature measuring signal transmitted by the temperature measuring probe, and a portable mobile terminal which is plugged on the middle storage device and is used for receiving the temperature of the outer pipe wall surface of the to-be-detected pipe from the middle storage device and acquiring thickness of the pipe wall of the to-be-detected pipe based on the heat conduction condition. The device is advantaged in that dismounting temperature insulation equipment and setting scaffolds can be omitted, a lot of human resources are saved, high efficiency is achieved, one-time investment is achieved, cost for calibration of the temperature measuring probe and periodic maintenance of the mobile terminal is only required, and economic property is further achieved.

An embodiment of the present invention provides a wall thickness monitoring device and system, the wall thickness monitoring device includes a microprocessor, a first current electrode, a second current electrode, and a device located between the first current electrode and the second current electrode The pair of measuring electrodes; the first current electrode, the second current electrode and the measuring electrode pair are respectively arranged on the outside of the pipe wall, and the microprocessor is connected with the first current electrode, the second current electrode and the measuring electrode pair Electrically connected respectively; the microprocessor is used to provide current to the first current electrode and the second current electrode, and detect the voltage value in each of the measuring electrode pairs, so as to calculate the thickness at the corresponding position of each measuring electrode pair. The invention can accurately obtain the wall thickness value during the operation process of pipelines and other equipment, greatly reduces the monitoring and operating costs in the thickness measurement process, and effectively prevents problems such as leakage and bursting caused by excessive thinning of the pipe wall.

The invention discloses an automatic adjustable interior decoration spraying device. The automatic adjustable interior decoration spraying device structurally comprises a machine body, moving wheels,a discharging pipe and a feeding hopper, wherein the moving wheels are movably clamped to the side of the machine body; the feeding hopper is fixedly embedded in the upper end of the discharging pipe;the discharging pipe is mounted at the front end of the machine body; cement mortar entering the discharging pipe through the feeding hopper generates outward thrust on a separation mechanism, the separation mechanism can guide in non-solidified fluid cement mortar inwards firstly, and thus a rolling plate can roll the cement mortar squeezed between the rolling plate and the inner wall of a frame; through the throwing force generated by upward swinging and resetting of a swinging plate, an outward extending strip can stretch out upwards along a bearing plate to be inserted into the cement mortar; and when the outward extending strip completely contracts, a hollow groove can be reserved in the cement mortar, thus the surface wall of the solidified cement mortar can be thinned, and the solidified thin-wall cement mortar can be broken through by the cement mortar sprayed out next time.