52 results about "Iron based" patented technology

The utility model discloses a current carrier and a connector using the same, the current carrier comprises an iron base body and a copper conducting layer, the copper conducting layer covers at least one surface of the iron base body, and the iron base body and the copper conducting layer jointly form a composite conducting structure. The iron matrix plays a supporting role in the current carrier, so that the overall strength of the current carrier is enhanced. And when physical connection is carried out, the strength of the current carrying body is enhanced, so that the physical connection of the whole device is more stable and reliable. Meanwhile, the copper conducting layer covering the surface of the iron substrate can ensure that the bearing capacity of the current carrier meets the requirement, and due to the fact that part of copper is replaced by iron, the material cost is reduced, and the utilization rate of the current bearing capacity of the remaining copper is also improved.

The application discloses a preparation method of an iron-based composite anode for electrochemical synthesis of adiponitrile, and the iron-based composite anode comprises an iron base material which can be pure iron, carbon steel, 304, 316L, 904L, 2204 and the like, and a tungsten carbide bottom layer and a doped active layer are sequentially arranged on the surface of the iron base material from inside to outside. The tungsten carbide bottom layer is sprayed on the surface of the iron base material, and the doped active layer is prepared on the tungsten carbide bottom layer. In the electrochemical synthesis of adiponitrile, the iron-based composite anode is used as an anode. The iron-based composite anode improves the adhesion between the doped active layer and the base material, improves the electric conductivity, and improves the corrosion resistance. In the electrochemical synthesis of adiponitrile, the problem of easy corrosion of the anode in electrolysis is solved, the service life is prolonged, and the yield of adiponitrile and the electrolytic current efficiency are improved.

The invention relates to a method for co-producing direct reduced iron based on a dry powder coal pressurized gasification furnace, which comprises the following steps: producing high-temperature raw gas with the pressure of 0.6-1.2 MPa and the temperature of 1450-1600 DEG C by adopting the dry powder coal pressurized gasification furnace, adding hydrogen with the temperature of 300-400 DEG C to obtain reducing gas with the temperature of 850-950 DEG C, and feeding the reducing gas into a DRI reduction shaft furnace to produce the direct reduced iron, and the produced furnace top gas with the pressure of 0.6-1.2 MPa and the temperature of 350-500 DEG C is subjected to heat exchange with normal-temperature hydrogen, the temperature is adjusted to 190-210 DEG C, CO conversion is carried out to obtain normal-temperature conversion hydrogen, the normal-temperature conversion hydrogen exchanges heat with the furnace top gas and then is added into the high-temperature raw gas to obtain reducing gas, and the process is cycled. According to the method, the direct reduced iron is co-produced through capacity expansion and pressure reduction of the dry powder coal pressurized gasification furnace, so that low energy consumption of the coal gas direct reduced iron is realized, and zero carbon emission is realized on the basis of capturing and recycling CO2.

The invention discloses a petroleum pumping unit driven wheel casting device, and belongs to the technical field of casting, the petroleum pumping unit driven wheel casting device comprises a lower die, six annularly distributed middle hole columns are fixedly connected in the lower die, an upper die is arranged above the lower die, and the upper die comprises an outer die base, a profiling metal inner die, an alignment hole shell and a center pouring shell. The forming cavity is gradually filled with molten metal through the center pouring shell, the multiple extrusion columns move downwards at the same time to downwards press and transfer pressure to the profiling metal inner mold, the molten metal moves in the area inside the forming cavity to be mixed with the molten metal entering in sequence, and the bottom of the profiling metal inner mold deformed under stress is shaped through the profiling cold iron base. And meanwhile, the upper layer parts of the connecting ribs and the connecting area of the inner ring and the outer ring are completely covered, the outer edge parts of the through holes in the narrow parts of the connecting ribs are covered with the six hole area cold iron blocks, the component connecting areas and the through hole parts of the driven wheel casting are effectively and sequentially solidified within similar time, and isolated hot spots of the connecting areas are reduced.

The present invention discloses a pot body, including an iron substrate located at the inner wall of the pot body, and the pot body also includes an anti-rust plate located on the surface of the iron substrate; the anti-rust plate includes a steel plate and an active metal plate, the metal activity of the active metal plate is higher than that of the steel plate, the steel plate and the active metal plate can be selectively provided with protrusions and grooves respectively, the protrusions and the grooves are interlocked, and the top surface of the protrusions is exposed in the grooves to be formed on the inner surface of the pot body. The present invention also discloses a cooking utensil including the above-mentioned pot body. In addition, the present invention also discloses a method for processing a pot body, including the steps of: preparing a pot blank, the substrate of the inner wall of the pot blank being an iron substrate; and compositely forming an anti-rust plate on the inner wall of the pot blank. The pot body of the present invention protects the pot body from corrosion by forming cathodic protection.

The present invention discloses a method for constructing and forming a high-temperature iron-based self-lubricating and anti-friction composite material, which belongs to the technical field of high-temperature anti-friction composite material preparation. The preparation method comprises the following steps: preparation of an iron-based preform, pretreatment of graphite fibers, and construction and forming; currently, graphite is widely used in matrix materials as a lubricating medium, but the addition of graphite leads to an increase in carbon content, which causes the plasticity and forgeability of iron-based metals to drop sharply, affecting the service performance of the material; the method of the present invention adds micron-sized graphite fibers to the iron-based material for construction and forming, and controls the amount of fiber added by nickel plating the fiber surface to prepare a graphite / iron-based composite material with good bonding strength; the presence of uniform graphite inside the matrix forms a lubricating film during wear, thereby exerting a good anti-friction effect, improving the service life and working stability of hot-processed parts, and improving production efficiency.

The invention discloses a derusting gel aiming at heavily rusted steel and a derusting method of gel cooperating with continuous laser, and belongs to the technical field of steel derusting. Mixing a copper chloride solution and a thiourea solution, stirring to obtain white gel, adding concentrated hydrochloric acid, mixing and stirring to obtain rust removal gel; 0.2-0.5 wt% oxalic acid solution is sprayed to the surface of the rusted steel, 0.5-1.0 wt% ammonium bicarbonate solution is sprayed 10-20 min later, and a laser cleaning machine is adopted to conduct wet-type continuous laser pretreatment on the surface 1-5 min later; and the surface of the pretreated steel is coated with rust removal gel, and after coating is conducted for 15-30 min, continuous laser rust removal is conducted on the surface through a laser cleaning machine. When gel rust removal and continuous laser rust removal are cooperatively combined, the advantages of a chemical method and the advantages of a laser method can be exerted, the purpose of efficiently removing corrosion products on the surface of the heavily-corroded steel plate in a short time is achieved, and basically no damage is caused to a steel base body.

The present invention discloses a method for preparing an iron-based multicellular filled circular tube thin-walled structure composite aluminum-based material, which belongs to the technical field of metal composite material preparation. The method of the present invention is: placing the iron-based multicellular filled circular tube thin-walled structure obtained by additive manufacturing or extrusion casting in a suitable graphite mold, adding an appropriate amount of aluminum-based metal powder therein, using an oscillator to evenly fill the powder into the spatial structure, and after pre-pressing, placing it in a spark plasma sintering furnace for sintering, cooling to room temperature, and removing the mold to obtain the iron-based multicellular filled circular tube thin-walled structure composite aluminum-based material. The method of the present invention for preparing the iron-based multicellular filled circular tube thin-walled structure composite aluminum-based material can effectively avoid the problem that the aluminum liquid cannot infiltrate and fill the iron-based small-sized spatial structure due to high surface tension and the oxide layer is easily generated between the Al / Fe alloy. The interface of the obtained composite material is completely fused without obvious boundaries. The method is simple, efficient, and has low energy consumption.

The invention belongs to the technical field of equipment installation foundation construction, and particularly relates to a sizing block base slurry construction method after equipment is in place. A foundation bolt is arranged in the foundation hole, the upper end of the foundation bolt penetrates through a bolt hole of the equipment bottom plate, and after the height of the foundation bolt is adjusted, the foundation bolt and the equipment bottom plate are fixed through a nut; the sizing block group comprises flat sizing blocks, upper tapered iron and lower tapered iron, the lower surface of the lower tapered iron is horizontal, the upper surface of the upper tapered iron is horizontal, and the contact surface of the upper tapered iron and the lower tapered iron is an inclined surface; the upper tapered iron and the lower tapered iron are combined and arranged on the upper side of the flat sizing block, and a fixing device is arranged on the equipment bottom plate to fix the flat sizing block, the lower tapered iron and the upper tapered iron with the equipment bottom plate; and the lower surface of the flat sizing block is filled with bed mortar concrete from a foundation hole. According to the method, the two working procedures of foundation bolt hole grouting and sizing block base grouting are completed at a time, and the construction efficiency is remarkably improved; the foundation bolt and the sizing block are grouted at a time, the construction space is large, a dense grouted pier can be formed, and the construction quality is guaranteed.

The application provides a preparation method of a silver-copper ferrite-iron-based metal organic framework composite material, and comprises the following steps: step S1, a copper ferrite material is prepared by improving a pH value and a hydrothermal temperature and by adding different additives through a modified solvothermal method; step S2, an iron-based metal organic framework material is prepared by improving a pH value and stirring conditions at room temperature through a sol-gel method; step S3, a heterostructure is formed by combining the copper ferrite material and the iron-based metal organic framework material through an ultrasonic method, so that a copper ferrite-iron-based metal organic framework composite material is obtained; and step S4, a silver quantum dot is photo-deposited on the surface of the copper ferrite-iron-based metal organic framework composite material through a photo-deposition method, so that a silver-copper ferrite-iron-based metal organic framework composite material is prepared. The silver-copper ferrite-iron-based metal organic framework composite material prepared by the application can be used for removing oxygen-containing acid salt pollutants in drinking water, such as nitrate, bromate and chlorite, and has a wide application prospect.

The invention discloses an anti-oxidation method for high-temperature heating of an iron-based thin strip in a laboratory muffle furnace, and belongs to the technical field of metal heat treatment processes. According to the principle that the charcoal has porous adsorption and is easy to react with oxygen, the charcoal is ground into powder, the charcoal powder and an iron-based amorphous ribbon sample are simultaneously packaged in a quartz tube, and in the high-temperature heating process, air sealed in the quartz tube preferentially reacts with the charcoal powder to completely consume oxygen in the quartz tube, so that the oxidation behavior on the surface of the sample is blocked.

A method of manufacturing plated steel having excellent workability and corrosion resistance according to one embodiment of the present invention includes the steps of immersing an iron base into a molten alloy plating bath, and pulling out the immersed iron base from the molten alloy plating bath and performing a cooling process, thereby forming a molten alloy plating layer on the iron base, wherein in the cooling process, a first average cooling rate varies depending on a difference between a first temperature (i.e., a temperature of the molten alloy plating bath) and a second temperature (i.e., a solidification start temperature of a MgZn2 phase constituting the molten alloy plating layer).

The application discloses a rolling method of Inconel 625 / X65 composite plate. The rolling composite plate blank comprises Inconel 625 nickel-based alloy, two pieces of X65 low alloy steel base materials after being opened and reduced, and pure Ni sheet; after the composite material and the surface to be compounded are mechanically processed, the base material, the Inconel 625 composite layer, the Ni sheet and the base material are sequentially stacked and assembled into an asymmetric composite blank in sequence, and the compression ratio of the effective steel and iron base material is 8.75-9.77, which is 25%-39.5% larger than the compression ratio of the conventional symmetric assembly rolling, so that the base material of the composite plate has excellent low-temperature toughness. At the same time, the Inconel 625 composite layer is always located in the inside of the composite blank during the rolling process, so that the temperature of the Inconel 625 composite layer falls in the sensitization temperature range during the rolling process.

To provide a resistance spot welding method capable of obtaining a metal joined body in which an iron base body and an aluminum base body are firmly joined.SOLUTION: There is provided a resistance spot welding method for an object to be joined in which an iron base body and an aluminum base body are overlapped. The resistance spot welding method includes a first energization step of energizing the object to be joined, and a second energization step of energizing the object to be joined after the first energization step. The object to be bonded has a reaction layer containing Zn between the iron base body and an aluminum base body. In the first energization step, a precursor layer in which Al and Zn are substituted with each other between the aluminum base body and the reaction layer is generated without melting the aluminum base body. In the second energization step, at least the precursor layer is melted to generate a bonding layer composed of an intermetallic compound containing Fe and Al.SELECTED DRAWING: Figure 2D

A high-chromium nickel-iron-based high-temperature alloy and its preparation method, belonging to the technical field of high-temperature alloy materials, address the drawback of existing alloys in that they struggle to simultaneously achieve high oxidation resistance and ease of machinability. The high-chromium nickel-iron-based high-temperature alloy comprises, by mass percentage, 30-42% Fe, 18-25% Cr, 1.5-2.5% Ti, 1.2-2.5% Al, 0.5-2% Ta, 0.5-1.5% Hf, 0.02-0.1% Zr, 0.03-0.1% C, ≤0.006% B, with the balance being Ni. The alloy exhibits excellent corrosion resistance and good machinability.

A metal joined body has an iron base body and an aluminum base body that are joined together via a joint layer. The joint layer has a first layer composed of a first intermetallic compound formed on the iron base body side and a second layer composed of a second intermetallic compound formed on the aluminum base body side. The first layer has one or more first protrusions that merge integrally into the iron base body and extend in a pile shape into the first intermetallic compound. The second layer may have one or more second protrusions that are composed of a second intermetallic compound and extend in a columnar shape into the aluminum base body. The first intermetallic compound may contain Al5Fe2, and the second intermetallic compound may contain Al3Fe. The total thickness of the first layer and the second layer is, for example, 2 to 15 μm.

The invention relates to the technical field of steel preparation, and particularly discloses a composite metal plate for a shaft-matched dustproof cover and a preparation method and application of the composite metal plate. The composite metal plate for the shaft-matched dustproof cover comprises a composite chromic oxide layer, a nickel-tin alloy layer, a tin coating, a tin-iron alloy layer and an iron substrate which are sequentially arranged from top to bottom, the composite chromic oxide layer is a silicon dioxide-doped chromic oxide layer, and the doping amount of silicon dioxide is 5%-8% of the mass of the composite chromic oxide layer. The composite metal plate for the shaft-matched dust cover provided by the invention has good bonding strength, wear resistance and corrosion resistance, and can be applied to the dust cover. Meanwhile, the invention provides a preparation method of the composite metal plate for the shaft-matched dustproof cover, the preparation method realizes control of the forming process of each layer only through multi-step layer preparation, can be completed without special equipment, and is suitable for large-scale production.

The application provides a kind of nuclear waste glass solidification furnace electrode multilayer thin-walled sleeve electron beam welding method, belongs to the technical field of electron beam welding of heat-resistant alloy.The method comprises: joint processing;Joint butt joint;Welding construction;Wherein, the welding beam current gradually changes from large to small is used in welding construction.This method uses variable power welding strategy, gradually reduces the welding beam current during welding, can weld through the outer tube in the early stage of welding, and will not weld through the outer tube in the middle and late stages of welding, thereby improving the welding quality and the performance of the welded joint.The method is not only suitable for the welding of nuclear waste glass solidification furnace electrode multilayer thin-walled sleeve, but also can be used for electron beam welding of other nickel-based or iron-based high-temperature alloy parts, and is suitable for popularization and application in the field of electron beam welding of heat-resistant alloy.

The invention provides a stepped air distribution device for a CFB boiler burning solid waste and a using method of the stepped air distribution device, and belongs to the technical field of CFB boilers. The problems that iron bases and large impurities of the CFB boiler combusting solid waste are difficult to discharge, and an air distribution device is abraded are solved. The device comprises a water-cooling air distribution plate, a variable cross-section fluidization air pipe, a stepped wear-resistant refractory material layer, a primary fluidization air chamber and a slag falling pipe, the water-cooling air distribution plate is located at the bottom of a hearth, the upper end of the slag falling pipe is connected with the water-cooling air distribution plate, the stepped wear-resistant refractory material layer is laid on the water-cooling air distribution plate, and the primary fluidization air chamber is connected with the slag falling pipe. A plurality of steps are arranged on the periphery of the stepped wear-resistant refractory material layer, each step inclines towards the middle step by step, an inlet of the variable cross-section fluidization air pipe is connected with the primary fluidization air chamber, and an outlet of the variable cross-section fluidization air pipe is located at the step of the stepped wear-resistant refractory material layer. The stepped air distribution device is mainly used for stepped air distribution of the CFB boiler burning solid waste.

The application relates to the technical field of alloy materials, in particular to a low-thermal-expansion-coefficient dual-phase steel iron material and a preparation method thereof. The main phase of the dual-phase steel iron material is a steel iron material, and the precipitated phase is an iron-based negative thermal expansion phase. The preparation method is as follows: steel iron material and alloy elements required by the iron-based negative thermal expansion phase are heated to be molten to obtain a molten liquid; the molten liquid is fully stirred to be uniform by using an induced electromagnetic force; the molten liquid is poured into a mold to be solidified by electromagnetic stirring to obtain a steel sample; the obtained steel sample is sequentially subjected to annealing treatment and aging treatment, and the dual-phase steel iron material is obtained, the negative thermal expansion precipitated phase is uniformly distributed in the steel iron main phase, the negative thermal expansion effect of the negative expansion phase and the positive thermal expansion effect of the steel iron main phase are offset when the temperature changes, the low-thermal-expansion-coefficient of the whole material is shown, meanwhile, the steel iron main phase ensures the basic strength, plasticity and processability of the material.

The invention provides an electron beam welding method for a multi-layer thin-wall sleeve of a nuclear waste glass curing smelting furnace electrode, and belongs to the technical field of heat-resisting alloy electron beam welding. The method comprises the following steps: processing a joint; butting joints; welding construction; wherein the welding beam adopted in the welding construction is gradually changed from large to small. According to the method, a variable-power welding strategy is adopted, welding beams are gradually reduced in the welding process, the outer pipe can be thoroughly welded in the initial welding stage and cannot be thoroughly welded in the middle and later welding stages, and therefore the welding quality and the performance of a welded joint are improved. The method is not only suitable for welding of a multi-layer thin-wall sleeve of a nuclear waste glass curing smelting furnace electrode, but also suitable for electron beam welding of other nickel-based or iron-based high-temperature alloy parts and the like, and is suitable for popularization and application in the field of heat-resisting alloy electron beam welding.

The application provides a high-temperature-resistant nano-particle reinforced martensitic stainless steel and a preparation method thereof. The preparation method of the high-temperature-resistant nano-particle reinforced martensitic stainless steel comprises the following steps: uniformly mixing Nb powder and BN powder to obtain mixed powder, uniformly mixing the mixed powder and iron powder according to different mass ratios, and then sequentially placing the mixed powder and the iron powder into an iron thin cylinder to perform fixed welding by using a laser welding technology to prepare an iron-based thin rod containing gradient distribution mixed powder; and placing the iron-based thin rod and the martensitic stainless steel into a vacuum induction melting furnace to melt, and then performing vacuum casting, normalizing and tempering treatment to finally obtain the high-temperature-resistant nano-particle reinforced martensitic stainless steel. The high-temperature-resistant nano-particle reinforced martensitic stainless steel obtained by the application has a yield strength of greater than or equal to 315 MPa, a tensile strength of greater than or equal to 331 MPa and an elongation of greater than or equal to 49.5% at a temperature of greater than or equal to 600 DEG C.

1. Name of the product in this design: Steam Iron Base (KBS-371). 2. Purpose of this design: To hold a steam iron. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D view 1.

The invention belongs to the technical field of ferrous metallurgy, and particularly relates to a method for producing direct reduction iron based on electromagnetic induction heating. The method comprises the steps of iron ore pellet preparation, solid-phase reduction and aftertreatment, iron ore concentrate, a carbon source, metal iron particles and an additive serve as raw materials of the pellets, the prepared pellets are subjected to pre-reduction and final reduction treatment in an induction furnace, and periodic mechanical vibration is applied in the final reduction stage to accelerate the reaction. According to the method, the heat conduction activation effect of the metal iron particles and the efficient energy coupling capacity of induction heating are combined, rapid and uniform reduction of the iron ore pellets is achieved, and the obtained direct reduction iron has the advantages of being stable in structure, uniform in component, high in reduction rate and the like and is suitable for the efficient and low-carbon steel manufacturing process.

The invention belongs to the technical field of alloys, and discloses an amorphous alloy, a preparation method thereof and an amorphous alloy intelligent wearable component. The chemical composition of the amorphous alloy comprises at least one of Ti, Ni, Fe, Al or Mg. According to the amorphous alloy disclosed by the invention, through specific element types and a specific preparation process, particularly treatment of a spark plasma sintering process (specific sintering temperature and pressure can avoid growth of crystal grains, eliminate holes and densify the amorphous alloy), the prepared amorphous alloy is few in internal defects and high in strength. Furthermore, the raw materials for preparing the amorphous alloy can further comprise an iron base, a titanium base, a nickel base, an aluminum base or a magnesium base, the raw materials are rich in source, and the preparation cost can be reduced.

The present application belongs to the technical field of casting smelting, and mainly relates to a smelting method of a nickel-iron-based material. The method is mainly controlled through the processes of smelting preparation, EAF furnace smelting, first LF furnace smelting, VOD furnace smelting and second LF furnace smelting, and the specific processes and parameters of each step are reasonably set, so that the purity of the molten steel is significantly improved. Meanwhile, three times of slagging are performed in the VOD furnace smelting process, including before, during and after the VOD furnace smelting, so that the residual SiO2 in the molten steel can be completely removed, and the Si element is prevented from being re-reduced into the molten steel and exceeding the standard, and finally the nickel-iron-based material meeting the standard requirements is smelted.