5results about How to "Control form" patented technology

The invention discloses a method for accurately controlling the oxygen content of low-carbon low-silicon high-sulfur steel. The method comprises the following steps: controlling the alkalinity of final slag of a converter to be 2.0-2.5; a step-by-step weak deoxidation process is adopted in the converter tapping process, low-carbon ferromanganese, high-sulfur pyrite and ferrophosphorus alloy are sequentially added when 1 / 2 of tapping is performed, and lime and wollastonite are added when 3 / 4 of tapping is performed; an aluminum wire is accurately fed according to the blown dissolved oxygen content w [O] Ar when an argon blowing station enters the station; lime, raw dolomite and wollastonite are added in batches in the LF heating process; after heating, adding an aluminum-based reducing agent, and adding lime and wollastonite for slagging; after slagging is finished, alloy fine adjustment is conducted, and aluminum wire feeding or iron oxide scale adding on the slag surface is conducted; carrying out secondary heating on the LF, feeding a pure calcium core-spun yarn after the heating is finished, and carrying out soft blowing out of the station; carrying out soft reduction on a casting blank after continuous casting; according to the method, the problem that the oxygen content control fluctuation is large in the smelting process is solved, accurate control over the oxygen content of the molten steel is achieved, and a casting blank with the good sulfide inclusion form and the good surface quality and a product with the excellent cutting performance are obtained.

The invention provides a salt-cavern gas storage cavity construction oil-water interface monitoring tool which comprises a detection device, a density adjusting device, a floating device and a timing device. The detection device is used for detecting underground pressure; the density adjusting device is connected with the detection device and is used for adjusting the initial density of the detection device to be consistent with the density at the oil-water interface; the timing device is connected with the floating device and is used for controlling the floating device to start at fixed time; and the floating device is connected with the detection device and is used for increasing the buoyancy of the floating device so as to drive the detection device to float. According to the salt cavern gas storage cavity-building oil-water interface monitoring tool, the cost input of downhole operation or optical fiber tripping-in can be reduced, high economic benefits are achieved, and large-scale application can be achieved.

The application relates to an aluminum-silicon-strontium-titanium-zirconium alloy and an aluminum-silicon-strontium-titanium-zirconium alloy welding wire prepared from the same and belongs to the technical field of aluminum alloy welding wires. The alloy components and the weight percentages are as follows: Si: 4.50-5.50%; Mg: 0.01-0.05%; Sr: 0.02-0.50%; Ti: 0.01-0.15%; Zr: 0.01-0.20%; La: 0.01-0.10%; Ce: 0.01-0.15%; C: <0.0010%; the balance is Al and inevitable impurity elements, and the content of the inevitable impurity elements is less than 1.0 wt%. The application further discloses an aluminum-silicon-strontium-titanium-zirconium alloy welding wire prepared from the aluminum-silicon-strontium-titanium-zirconium alloy. Through control of the alloy components and the content of each component, the welding wire formed by the application has excellent performance in alloy mechanical properties, casting performance, grain refinement and welding quality.

This application relates to an 1180MPa grade ultra-high strength steel and its preparation method, belonging to the field of steel manufacturing technology. The chemical composition of the ultra-high strength steel, by mass fraction, is: C: 0.04%~0.25%, Si: 0.60%~1.80%, Mn: 1.20%~3.00%, Al: 0.02%~0.10%, P≤0.005%, S≤0.002%, Ti: 0.010%~0.040%, Cr: 0.10%~0.80%, N≤0.004%, B: 0.0010%~0.0030%, with the remainder being Fe and unavoidable impurities. The microstructure of the ultra-high strength steel includes ferrite and martensite. A breakthrough in the performance of ultra-high strength steel is achieved by employing a C-Si-Mn-Cr-B composition system and a segmented cooling process. After finishing rolling, the slab is air-cooled under a temperature-controlled insulation hood, allowing it to enter the water-cooling stage within the phase transformation temperature range and complete the martensitic phase transformation at an ultra-high cooling rate. The resulting ultra-high-strength steel possesses both ultra-high strength and good ductility, while its elongation, cold bending performance, and sheet shape quality are all comprehensively improved. This method effectively overcomes the sheet shape defects, performance fluctuations, and weld softening problems of traditional methods, and is suitable for the industrial production of ultra-thin ultra-high-strength steel.

The invention discloses a preparation method of a bionic intelligent wetting surface with anisotropy and multi-excitation. The preparation method comprises the following steps: step 1, preparing three material systems for printing; comprising a material A, a material B and a material C, and 2, gradient surface preparation: S1, depositing the material A on a substrate by adopting a single-material extrusion type 3D printing method to form a plurality of uniform magnetic response hydrophobic layers which are distributed at intervals, and S2, distributing the material B and the material C on the substrate in a gradient mode by adopting a gradient material extrusion type 3D printing method to form a plurality of temperature response non-uniform hydrophilic layers, the temperature response non-uniform hydrophilic layer is located between two adjacent uniform magnetic response hydrophobic layers, the ratio of the material B to the material C is gradually distributed, the change ratio of the material B to the material C is from 90% of the material B to 10% of the material C to 10% of the material B to 90% of the material C, and post-treatment is carried out in a photocuring mode.