41 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 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 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.

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 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.

1. Name of the product in this design: Iron stand (YPZ-176). 2. Purpose of this design: To hold an 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 present application relates to a wear-resistant, corrosion-resistant and impact-resistant multi-principal-element composite coating structure for alloy steel base body and a preparation method and application thereof, and belongs to the technical field of superhard coating development. x The FeCoCrNi(Al,Ti) high-entropy coating (x=0.5-1) is attached to the iron base body, the high-entropy coating is obtained by 3D printing to obtain a high-entropy coating before modification, and then nitrogen is infiltrated to obtain a product; the high-entropy coating before modification is composed of Fe, Co, Cr, Ni, Al or Ti in an atomic ratio of 1:1:1:1:x; the nitrogen-infiltrated layer obtained after nitrogen infiltration is mainly AlN or TiN, CrN and an FCC phase, the FeCoCrNi(Al,Ti) x high-entropy coating with a hardness greater than 1000 HV and excellent impact resistance and corrosion resistance is obtained for the first time, which widens the application range of alloy quenched and tempered steel.

The application belongs to the technical field of heat treatment of casting materials, and mainly relates to a heat treatment method of a nickel-iron-based material casting, strictly controls the parameter value range of key nodes of each step of heat treatment, detects the high-temperature tensile property of the casting in the temperature range of 650-700 DEG C after the completion of the heat treatment process, the tensile strength is 550-620 MPa, the yield strength is 500-550 MPa, compared with the conventional heat treatment method, the tensile strength is increased by more than 10%, the yield strength is increased by more than 25%, and the high-temperature use property and the service life of the material can be greatly ensured.

The invention discloses an iron backing plate production process, which relates to the technical field of iron backing plate production, and comprises the following steps: 1, preparing a steel billet; step 2, primary inspection; thirdly, heating to the temperature required by rolling; 4, phosphorus removal; 5, rolling is conducted; step 6, sizing; step 7, cooling; 8, straightening is conducted; ninthly, secondary inspection is conducted; tenthly, saw cutting is conducted; eleventhly, heating is conducted again; (12) punching is conducted; (13) flattening; step 14, quenching; and (15) tempering. According to the iron base plate production process, the appearance size and the mechanical property of the prepared iron base plate meet the requirements.

The present invention relates to a method for preparing a cladding coating using an iron-based metal coating containing nano-iron powder. The method comprises the following steps: 1) preparing the iron-based metal coating by uniformly mixing iron-based pre-alloyed powder, triolein, PVB, anhydrous ethanol, DOP, cyclohexanone, and hydrazine hydrate; 2) soaking a workpiece in the iron-based metal coating two to five times, drying it at 100 to 300°C in a hydrogen atmosphere, then evenly spraying a water glass solution onto the workpiece surface. The workpiece is then held at 200 to 400°C in a hydrogen atmosphere for 0.5 to 4 hours; and 3) subjecting the dried workpiece to carbon arc cladding to form a metallurgical bond. This method has the advantage of forming a uniformly adherent alloy coating on the workpiece surface. After drying the iron-based metal coating containing nano-iron powder, arc cladding is performed to obtain a metallurgically bonded coating, minimizing the thermal impact of the coating densification process on the substrate material and ensuring uniform and tight adhesion of the cladding layer to the component.

The invention discloses a preparation method of a ZTA ceramic particle reinforced steel-based composite material, which comprises the following steps: S1, steel powder prepared by a water atomization method is selected as a base material, the purity of the steel powder is 99.8%, the powder morphology of the steel powder is spherical, and the particle size is 10-30 [mu] m; and S2, ZTA ceramic powder is selected and mixed with the steel powder, the particle size of the ZTA ceramic powder is 1-2 microns, the volume fraction of the ZTA ceramic powder is 40%, zinc stearate is added as a binder, the mass fraction of the zinc stearate is 3%, and the three kinds of powder are fully ground so that the three kinds of powder can be evenly mixed. The method disclosed by the invention is controllable in cost and simple in process, the composite material is fine and uniform in crystal grain, good in ceramic particle dispersion uniformity and adjustable in component content, and the prepared composite material integrates excellent properties of a matrix and a reinforcement, not only has plasticity and toughness of a metal material, but also has the advantages of high hardness, good wear resistance and the like of a ceramic material.

The utility model relates to the technical field of auxiliary polishing equipment, and discloses an iron backing plate polishing clamp which comprises a bottom plate, an equal-height supporting plate for supporting an iron backing plate from the bottom and a positioning mechanism for positioning and clamping the iron backing plate in the horizontal direction are arranged on the bottom plate, and a pressing mechanism is further arranged on the bottom plate. The iron base plates are positioned and fixed in the horizontal direction through the positioning mechanism, then the iron base plates are fixed to the equal-height supporting seats through the pressing pliers in the pressing structure, and therefore the iron base plates can be conveniently polished, the two iron base plates can be fixed at the same time, and the polishing efficiency is improved.

The utility model belongs to the technical field of inductor positioning dies, and particularly relates to an iron-based nanocrystalline common mode inductor positioning die which comprises a support, a plurality of sets of sliding grooves are formed in the support, positioning holes are formed in the support, a positioning assembly comprises positioning sliding rods arranged in the positioning holes, and positioning block assemblies are arranged in one-to-one correspondence with the sliding grooves. The positioning block assembly comprises positioning blocks connected into the sliding grooves, the bottoms of the positioning blocks are integrally connected with sliding bases in sliding fit with the sliding grooves, the multiple sets of clamps are arranged in a pairwise mode, the clamps are clamped on the positioning sliding rods, the sliding bases are matched with the positioning sliding rods and the sliding grooves, the distance between the positioning blocks is adjusted, and then different turn-to-turn gaps can be adapted. And then through cooperation of the two sets of clamps, the position of the adjusted positioning block is fixed, and the situation that the positioning precision is affected due to movement of the positioning block is prevented.