59 results about "Ni element" patented technology

The application discloses a yield strength 600MPa high-strength austenitic stainless steel and a preparation method thereof, relates to the technical field of stainless steel preparation, and comprises C<=0.10%, Si<=1.00%, Mn 8.50~10.50%, Cr 13.50~15.50%, Ni<=2.00%, Cu<=0.50%, and N<=0.20%. The yield strength 600MPa high-strength austenitic stainless steel and the preparation method thereof take Mn and N elements as austenitizing and strengthening elements, replace the precious Ni element, control the Ni content to be below 2.00%, greatly reduce the raw material production cost, and realize the accurate control of austenitic structure stability through the dual-dimension quantitative regulation of temperature and an austenitic stability criterion Delta. d30 The yield strength 600MPa high-strength austenitic stainless steel and the preparation method thereof can realize the accurate control of the austenitic structure stability through the dual-dimension quantitative regulation of temperature and an austenitic stability criterion Delta. The comprehensive mechanical properties of yield strength >=600MPa, tensile strength >=1200MPa and elongation after fracture >=30% can be stably achieved.

The invention belongs to the field of metal oxide semiconductor-gas sensing, and particularly relates to a Ni < x > Fe < 2-x > O semiconductor gas-sensitive material with asymmetric defects, a preparation method and application, the sensing material is characterized in that Ni is doped in a Fe2O3 framework to form a Ni < x > Fe < 2-x > O bimetallic oxide rich in Ni-Ov-Fe asymmetric defects, Ni is used as a main active site for adsorbing and catalyzing NO2, and the Ni is used as a main active site for adsorbing and catalyzing NO2. And with the mutual reaction with active oxygen on asymmetric defects on the surface of the material, the sensing performance on NO2 is improved. The Ni < x > Fe < 2-x > O sensing material is prepared through a hydrothermal-calcination method, the interaction between Ni element and other atoms in a Fe2O3 frame is remarkable, and the electron transmission capacity is improved. The material is clear in labor division in the NO2 sensing process, NO2 and O2 have respective adsorption activation sites, then reaction is carried out, excellent NO2 sensing response performance and extremely low detection limit (200 ppb) are shown, and a good foundation is laid for development of novel metal oxide semiconductors.

This invention relates to an Fe-Ni based alloy with enhanced soft magnetic properties utilizing a medium-range ordered structure and its preparation method. The chemical formula of the alloy is: Fe bal Ni a Cr y Si b B c M d Cu e X f Its microstructure is as follows: the alloy matrix is ​​mainly amorphous, with dispersed atomic-scale medium-range ordered (MRO) clusters comprising 15%–40% by volume. The size of these clusters is controlled between 1 nm and 5 nm, and no long-range crystalline phases larger than 10 nm are formed. By introducing Ni element to couple magnetic moments with Fe to reduce the saturation magnetostriction coefficient, and by using a low-temperature relaxation annealing process to control the pre-precipitation behavior of Cu element, a high-density MRO-reinforced framework is established in the amorphous matrix. This material possesses high saturation magnetic induction, low coercivity, and excellent high-frequency permeability, which can improve the problems of large magnetostriction coefficients and high high-frequency noise in existing high-Bs iron-based nanocrystalline alloys. It is particularly suitable for high-frequency high-power transformers and wireless charging magnetic shielding modules.

The invention discloses a preparation method of mining wear-resistant steel US300N hot-rolled round steel. The preparation method comprises a steelmaking process and a steel rolling process. The hot-rolled round steel comprises the following chemical components in percentage: 0.61 to 0.63 percent of C, 0.70 to 0.75 percent of Mn, 1.75 to 1.85 percent of Si, 0.82 to 0.85 percent of Cr, less than or equal to 0.018 percent of P, less than or equal to 0.010 percent of S, 0.07 to 0.08 percent of Ni, 0.010 to 0.020 percent of Al and the balance of iron and inevitable trace elements. According to the invention, the contents of C, Si and Cr elements are reasonably controlled, the Ni element is added to refine pearlite interlamellar spacing, the size of inclusions and the cleanliness of steel are controlled through a steelmaking process, and the structure transformation and grain size of a hot rolling state are controlled through a steel rolling process, so that the wear-resistant hot-rolled round steel with matched hardness and toughness is obtained.

This invention belongs to the field of electronic packaging and soldering materials technology, and relates to a lead-free solder powder for reflow soldering and its preparation method. This lead-free solder powder is based on a Sn-Ag-Cu alloy system, and achieves melt purification, β-Sn grain refinement, and interface IMC stabilization by adding trace amounts of Ce and Ni elements. Its composition, by mass percentage, is: Ag 2.9%–3.1%, Cu 0.45%–0.55%, Ce 0.01%–0.10%, Ni 0.01%–0.05%, with the balance being Sn and impurities. During preparation, a Ce-Ni master alloy is used to introduce microalloying elements, followed by vacuum melting, inert gas atomization, and surface treatment to obtain spherical solder powder. The resulting solder powder has low oxygen content, good wettability, slow interface IMC growth after reflow, high solder joint strength, and excellent thermal cycling reliability, making it suitable for high-reliability electronic packaging applications.

Provided is a ceramic composition enabling a lower sintering temperature (or firing temperature), an electronic component, and a method for manufacturing the ceramic composition. A ceramic composition of the present disclosure comprises an oxide containing Mn and Ni elements, and contains all of Li, Na, and K elements.

The application provides a tool steel and a preparation method thereof. The tool steel comprises the following chemical components in percentage by mass: C: 0.50-0.59%, Si: 0.80-0.95%, Mn: 0.35-0.55%, Cr: 8.00-9.00%, W: 0.80-1.20%, Mo: 3.00-3.40%, V: 0.30-0.50%, Nb: 0.15-0.30%, Co: 0.18-0.38%, Ni: 0.15-0.35%, and the balance of Fe and impurities. The tool steel has excellent high strength, high toughness and red hardness through the design of alloy components, the increase of the content of Mo, the addition of Co and Ni elements, the design principle of multiple element combination, and the comprehensive consideration of the precipitation and growth mechanism of different element carbides in the solidification process.

The application relates to a feed for metal injection molding, a preparation method of the feed and a metal product, wherein the preparation method of the feed comprises the following steps: S1, obtaining the following components according to weight parts: 40-50 parts of Fe elements, 2-8 parts of Ni elements, 20-25 parts of Cr elements, 20-25 parts of Co elements, 2-8 parts of Mo elements, 2-8 parts of Cu elements, 0.1-3 parts of Si elements, 1-3 parts of Mn elements, mixing and then heating to melt the material, and then adopting a high-pressure water-gas combined atomization method to obtain mixed powder; S2, obtaining a forming agent; S3, preheating the mixed powder obtained in S1 under vacuum conditions, then adding the forming agent into the mixed powder for mixing, and then performing plasticizing extrusion granulation to prepare the feed. The feed can meet the size precision requirements of MIM injection, green compact degreasing sintering and related post-process machining, the existing MIM materials on the market cannot simultaneously meet the problem of high polishable hardness, and the obtained metal product has the comprehensive advantages of appearance and hardness.

The present application relates to the technical field of electrochemical hydrogen evolution reaction, in particular to a HER electrochemical cathode material based on Ni-Mo-Al composite coating. The conventional coating preparation technology has high cost, low powder utilization rate and poor bonding force between the coating and the current collector substrate. In view of the above problems, the present application provides a HER electrochemical cathode material based on Ni-Mo-Al composite coating, which is a metal composite coating formed by loading Ni, Mo and Al three kinds of metal powder on the surface of porous nickel current collector, the metal composite coating and the surface of porous nickel current collector form metallurgical bonding, and the metal composite coating is a coating obtained by coating Mo powder in the Ni-Al binary eutectic phase formed by Ni element and Al element. In the electrode material of the present application, no noble metal is used, the cost is low, the bonding force between the coating and the current collector substrate forms metallurgical bonding, the bonding force is strong, no toxic Cl2 gas is produced, and it is more environmentally friendly.

According to the rust-proof saw blade and the saw blade rust-proof treatment method provided by the invention, the matrix structure of the frame saw blade is uniform, the internal stress is low and the chemical stability is high through adding Cu and Ni elements and heat treatment optimization; a composite anti-rust system which is compact in structure and high in binding force is constructed on the surface of the frame saw blade, and a frame saw blade base body treated through the method has excellent mechanical performance and also has long-acting anti-rust capacity.

The invention belongs to the technical field of nuclear energy materials and surface engineering, and particularly relates to application of an MAX phase coating in a lead bismuth environment. The MAX phase coating is deposited on the surface of the structural material, so that the corrosion resistance and wear resistance of the steam generator can be remarkably improved. The result shows that under the conditions that the temperature is 450 DEG C, the normal load is 50N, the displacement amplitude is 75 microns, the vibration frequency is 25Hz and the cycle index is 106, a stable aluminum oxide oxidation layer and a compacted abrasive dust layer can be formed, so that the Ni element is effectively prevented from being dissolved, and the corrosion rate of a structural material is reduced; meanwhile, the abrasion depth of the structural material is reduced by 70% compared with that before protection, the structure is stable, the binding force is high, and the structural material is still kept complete and has no obvious peeling or failure phenomenon even in a long-cycle test.

The invention discloses a copper-aluminum-nickel alloy grounding material and a preparation method thereof, and relates to the field of grounding materials.The copper-aluminum-nickel alloy grounding material is characterized by comprising, by mass, 5-9% of Ni, 6-9% of Al and the balance Cu; in the smelting process, firstly, electrolytic copper is molten, then cupronickel with the designed proportion is added, finally, pure aluminum is added, and after all the raw materials are molten and subjected to heat preservation for 1-3 min, the raw materials are poured into a mold to be cooled and demolded to obtain a cast ingot; the invention provides a novel copper alloy grounding material, and discusses the rule of the influence of the content of the Ni element on the performance of the novel copper alloy grounding material. The Cu-Al-Ni alloy with different Ni contents is subjected to microstructure observation, the influence of different Ni contents on the mechanical property is discussed, and the influence of the Ni contents on the corrosion property of the Cu-Al-Ni alloy is explored through an electrochemical polarization curve.

This application belongs to the field of high-temperature alloy technology, and particularly relates to a low-density, high-strength, low-expansion high-temperature alloy and its preparation method. Existing Ni-Mo-Cr low-expansion high-temperature alloys rely solely on Mo solid solution strengthening and Cr oxidation resistance, without introducing Ti and Al to form γ' phase precipitation strengthening, and without establishing a stoichiometric balance between the Ni matrix and Ti and Al elements. This results in high density and low strength in existing alloys, failing to achieve a balance between low density and high strength. The embodiments of this application introduce Ti and Al to form γ' phase precipitation strengthening phases, replacing some of the heavier Ni element with lighter Ti and Al elements, and establishing a stoichiometric balance of [1.6Ni-3(2Ti+3.6Al)] / Mo = 3.0 to 4.2. This achieves for the first time the synergistic effect of solid solution strengthening and precipitation strengthening, as well as the simultaneous reduction of density and increase in strength, thus solving the technical problem of how to achieve low density, low expansion, and high strength in low-expansion high-temperature alloys.

The invention discloses a 9Ni steel plate with low Ni segregation and excellent low-temperature toughness and a preparation method and application of the 9Ni steel plate with low Ni segregation and excellent low-temperature toughness, and the preparation method of the 9Ni steel plate with low Ni segregation and excellent low-temperature toughness adopts the following smelting route: continuous casting, hot rolling, induction heating quenching, two-phase region quenching and tempering, wherein a casting blank obtained through continuous casting is subjected to soft reduction treatment so that the segregation index of the Ni element in the core of the casting blank can be smaller than or equal to 1.10, then hot rolling treatment is carried out so that the average size of austenite grains of the steel plate can be within the range of 9-12 microns, and then quenching treatment and tempering treatment are carried out twice. According to the preparation method, the structure uniformity and Ni segregation in the heat treatment process of the 9Ni steel rolling plate can be obviously reduced, the surface oxidation in the heating process of the 9Ni steel plate can be greatly reduced, the surface quality of the steel plate is ensured, and a powerful guarantee can be provided for obvious improvement of the transverse and longitudinal impact toughness at the temperature of 196 DEG C below zero and uniformity control of the steel plate.

The invention discloses a TiFe-based hydrogen storage alloy and a preparation method thereof, and belongs to the field of metal hydrogen storage materials. The general chemical formula of the TiFe-based hydrogen storage alloy is TiaNdbZrcFedNieMnf, and the atomic percent of each element is as follows: 46 to 53 at% of Ti element, 0.1 to 1.5 at% of Nd element, 1 to 6.5 at% of Zr element, 27 to 40 at% of Fe element, 2 to 10 at% of Ni element and 4.5 to 12 at% of Mn element; wherein Ti, Nd and Zr are first metal elements, Fe, Ni and Mn are second metal elements, and the ratio of the total atomic percent of the first metal elements to the total atomic percent of the second metal elements is 1.05-1.20. The TiFe-based hydrogen storage alloy can be activated at room temperature, has proper hydrogen absorption and desorption platform pressure, and keeps high hydrogen storage capacity and high hydrogen absorption and desorption rate at the same time.

The application discloses an anti-abrasion cobalt-based cladding powder, an ultrafine lamellar eutectic cobalt-based coating and a preparation method, and belongs to the technical field of anti-abrasion and anticorrosion alloy coating. The cladding powder comprises 15.0-20.0% of Ni, 14.0-15.0% of Cr, 22.0-25.0% of Mo, 2.7-2.9% of Si and 0.07% or less of C, and the rest is Co, in percentage by mass. The application utilizes the difference in mixing enthalpy of a specific content of Ni element and other elements in the cobalt-based alloy system, changes the non-equilibrium solidification path in laser cladding, suppresses the excessive precipitation and growth of Laves phase, and forms a Laves phase / (gamma-Co / Ni) lamellar ultrafine eutectic structure with excellent strength and toughness. Compared with the prior art, the application can significantly reduce the crack sensitivity of the coating without sacrificing the comprehensive performance of the coating in abrasion resistance and corrosion resistance.

This invention provides a high-strength, heat-resistant Al-Zn-Mg-Cu-Zr-Ni aluminum alloy, comprising, by mass percentage: Zn 7.0–8.0%, Mg 3.5–4.0%, Cu 1.0–1.5%, Zr 0.08–0.15%, Ni 0.08–0.15%, with Zn / Mg < 2.5, Cu / Mg > 0.3, Zr + Ni ≤ 0.2, and the balance being Al. This application also provides a method for preparing the aluminum alloy. By controlling the elemental ratio of the high-alloyed Al-Zn-Mg-Cu-Zr-Ni alloy, this invention transforms the strengthening phase, which is prone to coarsening at high temperatures, into a heat-resistant strengthening phase. Simultaneously, it uses low-cost Zr and Ni elements to replace elements such as Sc and Er, resulting in a high-strength, heat-resistant, and low-cost aluminum alloy.

The application provides a kind of low carbon high phosphorus weathering cold upsetting steel satisfying cold upsetting large deformation and preparation method, belongs to steel preparation field.The chemical composition of the cold upsetting steel includes:C:0.15%~0.25%, Si:0.20%~0.30%, Mn:0.30%~0.40%, Cu:0.20%~0.60%, P:0.08%~0.14%, S≤0.01%, Ni:0.10%~0.15%, Cr:0.20%~0.50%, Al T :0.025%~0.06%; wherein, C and P satisfy the following relationship: [P]*[C]≤0.035.Rationally design the chemical composition of cold upsetting steel, inhibit pitting by proper high phosphorus content and Cu, Ni element cooperation, form passivation film, satisfy the corrosion performance of the atmospheric environment characteristics of strong radiation, high SO2 concentration.At the same time, control C and P satisfy the relationship, avoid the problem of phosphorus segregation, grain boundary embrittlement, so as to satisfy the requirement of cold upsetting one-time forming limit quantity>80%.

The invention discloses a high-strength wind power main shaft bearing and a processing method thereof, and the method comprises the following steps: S1, raw material preparation: a, blank selection: selecting high-strength alloy structural steel containing Cr, Ni and Mo elements as a bearing blank, wherein the content of the Cr element is 1.5%-2.0%, the content of the Ni element is 0.8%-1.2%, and the content of the Mo element is 0.2%-0.5%; high-strength alloy structural steel containing Cr, Ni and Mo is selected as a blank, the Cr element is used for improving abrasion resistance and hardenability, the Ni element is used for enhancing toughness and fatigue resistance, the Mo element is used for improving high-temperature strength and tempering-resistant stability, the performance bottleneck of a traditional material is broken through from the raw material level, meanwhile, through homogenizing annealing in the blank pretreatment stage, the hardness of the blank is improved, and the hardness of the blank is improved. The structure segregation in the blank is effectively eliminated, the uniformity of material components and structures is guaranteed, a stable material foundation is laid for subsequent machining procedures, and local stress concentration and early failure caused by uneven materials are avoided.

The invention relates to the field of hydrogen energy separation and purification, in particular to a V90Ni10 alloy hydrogen separation membrane and a preparation method and application thereof. The alloy comprises, by atomic percent, 87-90 at% of V, 10-13 at% of Ni and less than or equal to 0.5 at% of impurities, and the whole alloy is of a single-phase body-centered cubic BCC-(V) solid solution structure. The Ni element forms a uniform replacement solid solution in a V matrix, and hydrogen solubility is reduced through lattice distortion and an electronic structure regulation effect, so that hydrogen embrittlement is effectively inhibited. The alloy film has no hydrogen embrittlement failure within the range of 523-673 K, the hydrogen permeability reaches 2.4 * 10 <-9 > mol m <-1 > s <-1 > Pa <-0.5 > or above at 623 K, and meanwhile, the alloy film has good mechanical properties and corrosion resistance. The invention further provides a preparation method comprising vacuum arc melting and Pd catalyst layer deposition. The material has high hydrogen permeability, excellent hydrogen brittleness resistance and low cost, and can be used for separation and purification of industrial high-purity hydrogen.

The invention relates to the technical field of amorphous alloy, in particular to a Fe-based amorphous alloy strip and a preparation method and application thereof, and the Fe-based amorphous alloy strip comprises the following elements of, by atomic percent, 75%-85% of Fe, 0.5%-4% of Si, 5%-12% of B, 0.1%-4% of P, 0.1%-4% of C, 0.5%-6% of Mo and 0.5%-5% of Ni. The sum of the atomic percentage contents of Fe, Si, B, P, C, Mo and Ni is 100%. According to the invention, the molybdenum element and the nickel element are introduced, so that the Fe-based amorphous alloy strip has high saturation magnetization, and meanwhile, the wear resistance and the toughness are remarkably improved.

The invention discloses high-strength structural steel for a photovoltaic bracket, which is composed of 80-90 wt% of high-strength steel matrix and 10-20 wt% of high-entropy rare earth oxide nanoparticles, and the surface of the high-strength structural steel is galvanized and passivated. Wherein the component of the high-entropy rare earth oxide is (La 0.15-0.25), Pr 0.15-0.25), Sm 0.15-0.25), Dy 0.15-0.25) and Er 0.15-0.25) 2O3, and the high-entropy rare earth oxide has a remarkable enhancement effect on the mechanical property of an alloy matrix; a trace amount of Al, Zr and Ni elements are added into the zinc plating solution to ensure that a uniform plating layer is formed; the passivation solution is an organic-inorganic compound passivation solution, and a good passivation effect can be achieved on the basis of no chromium. The prepared high-strength structural steel has high strength and high hardness, meanwhile, a plating layer and a passive film have good flatness, compactness and corrosion resistance, the comprehensive performance is excellent, and the high-strength structural steel has good application prospects in the photovoltaic support market.

The application discloses a diffusion source, a rare earth permanent magnet and a preparation method and application. The diffusion source comprises a heavy rare earth layer and a nickel alloy transition layer; one surface of the nickel alloy transition layer is attached to the heavy rare earth layer, and the other surface is used for being attached to an initial magnet to be diffused; the nickel alloy transition layer is formed by raw materials comprising a nickel-containing alloy powder and an X metal powder; wherein the nickel-containing alloy powder is an aNi·bSi·cB alloy powder; wherein a is a value of weight percentage of Ni element, b is a value of weight percentage of Si element, and c is a value of weight percentage of B element, and the ratio of a, b and c is 84-98.3:1.2-8.5:0.5-7.5; the X metal is selected from at least one of sub-group elements; and the weight ratio of the nickel-containing alloy powder to the X metal powder is 85-95:5-15. The diffusion source is beneficial to improving the coercive force of the magnet.

The application belongs to the technical field of stainless steel preparation, and discloses a cold-deformable and heat-treatable hardening Ni-free high-strength stainless steel and a preparation method thereof. The stainless steel comprises the following components in percentage by mass: Cr: 13-15%, C: 0.25-0.4%, Mn: 0.5-2%, Cu: 0.1-3%, Mo: 2-3%, Si: 0-0.5%, and the balance of Fe and inevitable impurities. The stainless steel does not contain Ni element, has a low work hardening rate (strain hardening index n≤0.185) and a fracture elongation rate of more than 20% in a soft state (annealed state), is cold-deformable, and has low raw material and processing costs; after quenching and aging heat treatment, the stainless steel not only has an optimal combination of strength and toughness (yield strength and tensile strength are more than 1300 MPa and 1600 MPa respectively, and elongation is greater than 10%), but also has a high yield strength ratio.

Embodiments of the present application provide a martensitic steel and a preparation method therefor, a structural member, and a terminal device. The martensitic steel provided in the embodiments of the present application comprises the Ni element, the Co element, the Mo element, the Nb element, the C element, the Fe element and other trace elements; on the basis of the total mass of the martensitic steel, the mass fraction of the Ni element is 14%-16%, the mass fraction of the Co element is 16%-18%, the mass fraction of the Mo element is 7%-10%, the mass fraction of the Nb element is 0.1%-0.6%, and the mass fraction of the C element is 0.003%-0.1%. On the basis of the element selection of the martensitic steel and the design of the content of each element, the martensitic steel can be prepared by means of a powder molding process such as metal injection molding, and the martensitic steel prepared by means of the described process can have high strength, good toughness, and a preset shape.

The invention provides a copper alloy pipe and a preparation method thereof. The copper alloy pipe is prepared from the following elements in percentage by mass: 0.5 to 2.1 percent of Al element, 0.5 to 2.0 percent of Si element, 0.5 to 2.0 percent of Ni element, 0.05 to 0.08 percent of Ce element, 0.05 to 0.1 percent of Cr element, 0.05 to 0.08 percent of V element, less than or equal to 0.02 percent of inevitable impurities and the balance of Cu element, an alpha phase and a beta phase exist in the copper alloy pipe, and the mass ratio of the alpha phase to the beta phase is (40-80): (20-60). The copper alloy pipe can give consideration to high strength, high conductivity and corrosion resistance, directional regulation and control of the double-phase proportion can be achieved by controlling the mass ratio of the alpha phase to the beta phase, optimization and adjustment are conducted according to the strength and conductivity requirements, and then the copper alloy pipe can be better applied to sea optical cable connecting pieces, underwater equipment connectors and other use scenes.

According to the yttrium-containing heat-resistant steel, by adding the rare earth yttrium element, the grain boundary binding force can be improved, the grain boundary strength and plasticity can be improved, the microstructure of steel can be remarkably refined, growth of thermal fatigue cracks can be inhibited, and therefore the steel can obtain better thermal ductility. And in addition, a proper amount of Mn and N elements are added to replace the Ni element, a proper amount of Zr / Nb / V elements are added to replace part of Mo element, the cost is jointly reduced, meanwhile, composite precipitation of (Zr / Nb / V / Mo) C / N is achieved, grains are further refined, the strength is improved, and therefore the steel has more excellent high-temperature performance.

The application discloses a kind of high-strength anti-cracking refractory high-entropy alloy powder, coating and its application, compared with traditional refractory high-entropy alloy powder, by adding refractory alloy elements Nb, Mo, Ta, W, V forms BCC solid solution, ensure the strength, hardness and high temperature performance of refractory high-entropy alloy coating should have;By adding Cr, Co, Ni element forms FCC solid solution, FCC+BCC two-way organization synergistic cooperation, both improve the toughness of coating, and coordinate the local stress and strain in the process of laser cladding fast cooling, thereby reduce the cracking risk of refractory high-entropy alloy coating in the process of laser cladding, improve its crack resistance.The application of the strong anti-cracking refractory high-entropy alloy coating in the application, mainly can be used for carbon steel, stainless steel, nickel-based alloy and other various materials surface strengthening, the coating has no crack, pore and inclusion and other defects, and the coating hardness exceeds 700HV.

The invention discloses an N10276 nickel-based alloy hot continuous rolling plate coil and a pickling surface treatment process. The N10276 nickel-based alloy hot continuous rolling plate coil is characterized in that a nickel-based alloy plate comprises the following chemical components in percentage by weight: 15.0% < = Mo < = 17.0%, 14.50% < = Cr < = 16.50%, 4.0% < = Fe < = 7.0%, 3.0% < = W < = 4.50%, 2.50% < = Co, 1.0% < = Mn, 0.35% < = V, 0.08% < = Si and 0.04% < = P; s is less than or equal to 0.03%, and C is less than or equal to 0.01%. The process comprises the following steps: 1) preparing materials and heating; 2) rough rolling; (3) descaling; 4) finish rolling; (5) coiling; (6) uncoiling and welding; 7) annealing; 8) pickling; (9) cleaning, sucking and drying; (10) coiling; a drying device in the step 9 comprises a box body, a feeding port, a discharging port, a blowing mechanism, a water absorption mechanism, a drying mechanism, a pinch roll, a conveying roll and a partition plate. The feeding port and the discharging port are located in the two ends of the box body, and the partition plate is fixed in the box body and divides the box body into a blowing area and a drying area. The nickel-based alloy plate cleaning device prevents cleaning water from remaining on the surface of the nickel-based alloy plate and corroding the nickel-based alloy plate.

The application discloses a vacuum die-casting motor rotor casting aluminum alloy and a preparation method thereof. According to mass percentage, the vacuum die-casting motor rotor casting aluminum alloy comprises the following components: 3.0-6.5% of Ni elements, 0.3-1.0% of Fe elements, 0.2-0.4% of Mg elements, 0.02-0.1% of B elements, 0.1-0.6% of Ce elements, and the rest is Al, and the rest is impurity elements; wherein, the content of a single impurity element is less than 0.03%, and the total content of the impurity elements is less than 0.2%.