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119results about How to "Join smoothly" patented technology

Vanadium-nitrogen additive for smelting microalloyed steel and method for preparing same

The invention discloses a vanadium-nitrogen additive for smelting microalloyed steel and a method for preparing same. The vanadium-nitrogen additive and the method are characterized in that the vanadium-nitrogen additive is uniformly mixed by vanadium-contained alloy powder, nitrogen increasing agent powder, and adhesive, wherein the mass ratio of the adhesive is 5-12%, the total mass ratio of the vanadium-contained alloy powder and the nitrogen increasing agent powder is 88-95%, and the ratio of V / N is controlled within 0.1-4. The method for preparing the vanadium-nitrogen additive used for smelting microalloyed steel comprises the following steps: mixing the vanadium-contained alloy powder and the nitrogen increasing agent powder by the weight percentage, mechanically and uniformly blending the mixed powders, subsequently adding 5-12% of the adhesive and uniformly mixing the powders again, finally mechanically forming blocks of spherule shapes or other shapes, and preparing the vanadium-nitrogen additive by drying the blocks. The ratio of V / N of molten steel can be controlled within 3.0-5.0 by the vanadium-nitrogen additive, the enhancement effect of the vanadium can be sufficiently played by utilizing the cheap nitrogen element, and the amount of the vanadium is reduced obviously.
Owner:MAANSHAN IRON & STEEL CO LTD

Airfoil shape and sidewall flowpath surfaces for a turbine nozzle

A turbine nozzle includes airfoil and sidewall surfaces. The airfoil and sidewall surfaces have profiles substantially in accordance with Cartesian coordinate values of X, Y and Z set forth in Tables I-IV for the pressure and suction sides of the airfoil, and the outer and inner sidewall surfaces, respectively. The X, Y and Z values are distances in inches. The X and Y values for the airfoil, when connected by smooth continuing arcs, define airfoil profile sections at each distance Z. The profile sections at the Z distances are joined smoothly with one another to form a complete airfoil shape. The X, Y and Z values of Tables III and IV define the outer and inner sidewall surfaces, respectively, of the gas flowpath.
Owner:IPSEN MFG IRELAND

Multi-crack fracturing control method for medium-depth coal beds

ActiveCN103244097AJoin smoothlyOvercoming poor sand-carrying abilityFluid removalFracturing fluidHigh pressure
The invention relates to an oil extraction process for oil fields, in particular to a multi-crack fracturing control method for medium-depth coal beds. The method comprises six steps of 1) preparation of a filtrate reduction fracturing fluid; 2) utilization of a high-pressure pump set; 3) utilization of a high-pressure pump set; 4) utilization of a high-pressure pump set; 5) phased utilization of a prepad liquid; and 6) ending of work. According to the multi-crack fracturing control method, prior conventional active-water sand fracturing method is changed through theoretical analysis and on-site verification, and the filtrate reduction fracturing fluid, the prepad liquid variable displacement technology, a multi-stage particle size slug technology, a reasonable mortar-sand ratio raising technology and the like are used, accordingly, difficulties such as large filter losses, poor sand carrying capabilities and excess leak-off of the fracturing liquid and high construction pressure during opening of natural cracks are overcome. Multi-crack is effectively prevented and treated through the means of the filtrate reduction fracturing fluid, and the prepad liquid variable displacement technology and the multi-stage particle size slug technology, so that the construction pressure is reduced, smooth adding of a propping agent is guaranteed, and the fracturing construction success rate is improved.
Owner:BC P INC CHINA NAT PETROLEUM CORP +1

Switching electrode and resistance welding device using same, spot welding device and spot welding method

The invention provides a switching electrode which has a small variation in resistance value even when a large amount of current is repeatedly cut off and can carry a stable amount of current even when it is continuously used. In the invention, the switching electrode is used in a switch which includes a first switching electrode tip (21) and a second switching electrode tip (22), brings the first switching electrode tip (21) and the second switching electrode tip (22) into surface contact with each other to carry a current, and separates the first switching electrode tip (21) and the second switching electrode tip (22) to cut off the current. At least one of contact surfaces of the first switching electrode tip (21) and the second switching electrode tip (22) is a flat surface having an uneven portion.
Owner:HONDA MOTOR CO LTD

Sustained release pest control products and their applications

InactiveUS20060182776A1Inexpensive methodConvenient methodBiocideAnimal repellantsPesticideUrea
A method for applying a barrier to structures to prevent the infiltration of pest species (unwanted organisms) uses a (e.g., coating) composition formed from a polyurethane (e.g., film-forming) polymer system and a pellet comprising a pesticide incorporated into a sorbent and dispersed in the polyurethane polymer system. The composition protects the structure by application either to the structure or to a pathway that leads to the structure. Advantageous polymer systems include polyurethanes rich in urea linkages and predominating in aliphatic and alicyclic backbones.
Owner:BIOGUARD TECH

Resource allocation method and communication equipment

The embodiment of the invention discloses a resource allocation method and communication equipment, which are used for allocating special reserved resources to the communication equipment which does not join a group so as to smoothly join the group. The method provided by the embodiment of the invention comprises the following steps: a first device configures first configuration information for asecond device, wherein the first configuration information is used for indicating a first time-frequency resource allocated by the first device, and the first time-frequency resource is different froma second time-frequency resource allocated by the first device to a third device in the same group, the first time-frequency resource comprises a third time-frequency resource and a fourth time-frequency resource, the third time-frequency resource is a time-frequency resource used when the first device receives a message sent by the second device, the fourth time-frequency resource is a time-frequency resource used when the first device sends the message to the second device, and the third time-frequency resource and the fourth time-frequency resource are different; and the first device sendscontrol information, wherein the control information comprises first configuration information.
Owner:HUAWEI TECH CO LTD

Automatic turnplate type glue preparation and injection machine

The invention discloses an automatic turnplate type glue preparation and injection machine which is provided with at least two charging barrels and at least one dynamic mixing glue injection head. The dynamic mixing glue injection head is provided with a plurality of feeding ports and a discharging port. The charging barrels communicate with the feeding ports in a one-to-one correspondence mode through feeding pipes. Each feeding pipe is provided with a metering pump and a feeding valve. At least one working turnplate is arranged on a working table and under the dynamic mixing glue injection head. The center of the working turnplate is connected with a motor and a reduction gearbox through a rotary shaft. The working turnplate is provided with a plurality of sets of positioning points. A glued piece is placed at each positioning point correspondingly. The multiple sets of positioning points are distributed in a radial shape around the center of the working turnplate. A control computer of the glue injection machine controls the dynamic mixing glue injection head, the metering pumps, the feeding valves and the motor. By the adoption of the automatic turnplate type glue preparation and injection machine, full automation, batch production and continuous production of glue preparation and glue injection in the ultra-filtration element glue sealing technique are achieved, the automation degree is high, the labor intensity is relieved, the labor cost is reduced, and the glue preparation and glue injection quality is improved.
Owner:KUNSHAN JINGCHENG MEMBRANE TECH CO LTD
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