36 results about "Erosion surface" patented technology

The invention relates to a manufacturing method of a medium-high pressure chemical foil, and the manufacturing method comprises pretreatment on an aluminum foil which is subjected to erosion surface expansion and multilevel formation treatment. The pretreatment comprises the following steps of carrying out infiltration treatment on the aluminum foil which is subjected to erosion surface expansionin a wetting disperse liquid, wherein the wetting disperse liquid is a water solution of a non-ionic surface active agent of which the hydrophilic-lipophilic balance (HLB) value is at 11-15. The manufacturing method of the medium-high pressure chemical foil in the invention can be capable of generating a stable oxidation film, meanwhile, and reducing the loss brought by the follow formation on the formed specific area of the aluminum foil, thereby improving the electrostatic capacity and water-tolerant performance of the aluminum foil.

The invention discloses a preparation method of anti-corrosion wear-resistant iron-based amorphous coating for a boiler tube bundle. The method comprises the following steps: 1, a fog method is adopted to prepared iron-based amorphous alloy powder, wherein the iron-based amorphous alloy powder is prepared by mixing the following raw materials in percentage by weight: 0.05-2.0% of Mo, 1.0-20.0% of Cr, 12.0-20.0% of Ni, 6.0-12.0% of Si, 0-4.0% of Al, 4.8-10.5% of C, and the balance of Fe and unavoidable impurities; 2, a plasma spraying technology is adopted to spray the surface of the boiler bundle to prepare the anti-corrosion wear-resistant iron-based amorphous coating. The iron-based amorphous coating prepared by the method disclosed by the invention is excellent in corrosion resistance, wear resistance and high-temperature stability, can protect the thermal erosion surface of the boiler tube bundle well in the hot corrosion and washout concurrent environment, so as to effectively prolong the service life of the boiler tube bundle.

The invention relates to a recyclable sputtering target and a manufacturing method thereof. The method comprises the following steps that: a return target is provided and comprises a back side, a sputtering erosion surface and a periphery, and the sputtering erosion surface comprises at least a sputtering erosion surface groove; the back side of the return target is pre-machined; and raw material powder with the same components with the return target is covered on the sputtering erosion surface of the return target, in the sputtering erosion surface groove and on the periphery, pre-pressed and sintered to obtain the recyclable sputtering target. The invention can control the proportion of the return target in the recyclable sputtering target, so that the proportion of the components of the first target returning is gradually reduced, so as to replace the old with the new and to keep the recyclable target sputtering quality.

A target and backing plate assembly for magnetron sputtering includes a target, the distance between the erosion surface of the target and a magnet disposed at the rear surface of the target and that between the erosion surface and a surface of a substrate facing the target being fixed. The target has an uneven shape of which thickness is changed at a surface adjacent to a backing plate such that portions to be eroded by sputtering are thick. Conductive spacers are disposed between the backing plate and the target having the uneven shape at thin portions of the target. With this structure, a target of which lifetime and use efficiency are increased while film uniformity (uniformity of film thickness) is kept excellent throughout the sputtering life of the target can be provided. In addition, a method of manufacturing the target and a target backing plate can be provided.

The invention provides a method for determining a blast-furnace hearth bottom erosion envelope surface and relates to the technical field of blast-furnace hearth bottom erosion detection. The method has the advantages that a method based on unchanged grids and a dimensionality approaching method is used, different-dimensionality feature simplification is performed on blast-furnace hearth bottom models according to the rule hypothesis of steady-state heat transfer in blast-furnace simulation models, the needs of precision are considered, and the different-dimensionality simulation models are calculated; the highest temperature of detecting points is acquired according to hearth thermocouple monitoring data of different periods; precision increasing is converted into dimensionality expansionby using obtained hearth bottom inner boundary as the initial condition of high dimensionality; unit dimension differences are ignored during envelope surface regulation, the solving of the accurateposition of an erosion surface is not needed, an overall solution for solving a blast-furnace envelope surface is formed, the accuracy of blast-furnace erosion calculation measuring results is increased, calculation quantity is reduced at the same time, and the problems that erosion detection results are large in errors, and erosion detection is high in calculation quantity in the prior art are alleviated.

The present application includes a rotor blade having an erosion protective coating, the coating being a cermet material configured to protect against erosion during the operation of the rotor blade. Further, the present application includes a method of selectively applying the erosion protective coating, a method of selectively repairing/reapplying the erosion protective coating, and a process of developing an erosion surface model map of an optimized erosion protective coating pattern and thickness.

To provide an erosion characteristics database and a method for constructing the same, an erosion prediction method and an erosion prediction system using the database for predicting a widespread erosion amount of a fluid machine or the like in a short time without the need for an operation of a model machine or an actual machine.

A method for predicting erosion of a fluid machine surface due to cavitation, the method including: calculating erosion intensity distribution in each area of the fluid machine surface from cavitation flow field characteristics obtained using cavitation CFD in a flow path formed by the fluid machine; determining radius distribution and center position distribution of a representative sphere and the number of shape deformations by the representative sphere for assuming an erosion surface having a porous surface property based on the erosion intensity distribution; determining a fluid machine surface to be predicted as an approximate erosion surface; and calculating a shape after deformation of the approximate erosion surface based on the radius distribution and the center position of the representative sphere and the number of shape deformations by the representative sphere.

The invention discloses a bionic erosion-resisting pipeline elbow. Bionic ribs are evenly distributed on the erosion surface of the pipeline elbow, the spreading direction of each bionic rib is arranged in the flow direction, and the characteristic curve of the contact curve surface of each bionic rib and a flow field is a minor arc or a semicircle; alternatively, the spreading direction of each bionic rib perpendicular to the incoming flow direction, and the characteristic curve of the contact curve surface of each bionic rib and the flow field is two externally tangent arcs. The bionic rib structure of the bionic erosion-resisting pipeline elbow is the main position eroded by solid particles, the position is higher than the wall surface by a certain distance, and namely the thickness of the elbow is increased locally. The bionic ribs effectively control the near wall region flow field of a multiphase flow, so that the impact angle between the solid particles and the wall surface is controlled, and the wall surface of the pipeline elbow is effectively protected from the flow field control angle.

The invention relates to a ceramic decorative detached brick with natural water erosion surface, comprising an adobe made of same or different colored blanks, the brick surface is water erosion surface, namely a plurality of rugged pits or cambered surfaces or natural round pitting surfaces different depth generated due to water immersion and erosion are arranged on the surface of the brick. Compared with the prior detached brick, the production method is characterized in that the water erosion and flushing process are added between the drying process and the calcination process, the drying process is as follow: immersing the dry adobe surface of detached brick under water 1 to 3mm for 1 to 10 minutes, when the immersed part fully softened, washing the brick surface with fresh water, thus a plurality of rugged pits or cambered surfaces or water erosion surfaces with the depth of 0.1 to 3mm are formed on the brick surface, then calcining the adobe after drying. The surface of the brick produced with the method has smooth rugged pits which are similar to the stone surface eroded or flushed by water, and appears the unique artistic effect; furthermore, the brick surface has no scratch; the appearance is beautiful, and the brick body is higher in strength and more corrosion resistant.

The invention discloses a preparation method of a corrosion-resistant and wear-resistant molybdenum-based amorphous coating for a boiler tube bundle. The method comprises the following steps: firstly, preparing molybdenum-based amorphous alloy powder by adopting an aerosol method, wherein the molybdenum-based amorphous alloy powder is formed by mixing the following raw materials in percentage by mass: 7.0-11.0% of Fe, 11.0-20.0% of Cr, 1.0-10.0% of Ni, 6.0-9.0% of Si, 0.5-2.0% of Al, 2.6-8.0% of C, 0.5-5.5% of W, 0-2% of Y and the balance of Mo and unavoidable impurities; secondly, preparing and obtaining the corrosion-resistant and wear-resistant molybdenum-based amorphous coating on the surface of the boiler tube bundle by adopting a plasma spraying technology. The molybdenum-based amorphous coating prepared by the invention has excellent corrosion resistance, wear resistance and high-temperature stability, and can protect the heat erosion surface of the boiler tube bundle better in an environment with the combined effect of heat corrosion and erosion, so that the service life of the boiler tube bundle is effectively prolonged.

The invention relates to a slide slope soil erosion modulus measurement method for a waste dump of mine. The method is characterized by comprising the following steps: firstly measuring an erosion surface area of a to-be-measured side slope; constructing a measurement groove at the lower side of. The to-be-measured side slope, laying a thin film in the inner surface of the groove to reserve the side slope loss soil; collecting the loss soil at fixe time, and measuring the loss soil weight; and finally computing the soil erosion modulus by using the measured erosion surface area and the loss soil weight. A large amount of unnecessary monitoring loops and computation processes are reduced, and the method is suitable for the small-range side slope soil erosion modulus measurement under the stranger environment. The method has the characteristics of being simple in process, easy to implement, extensive in raw material source, cheap in price, low in cost, fast and accurate, and can be promoted and applied to the measurement of other varieties of side slope soil modulus.

The invention discloses a soil erosion surface form DEM construction and observation method and device in a rainfall process, and the method comprises the steps: processing a gray value pixel by pixelthrough employing a K-means algorithm, reconstructing a pixel value after rain and fog removal from a plurality of pixel values, and improving the rain and fog removal accuracy and efficiency of an image. The underlying surface form can be observed in the continuous rainfall process, and the soil erosion occurrence and development process is digitally and graphically expressed. More importantly,the underlying surface form is described from two dimensions of time and space at the same time, and a powerful means is provided for scientific research of the soil erosion process and mechanism.

The invention discloses a karst ancient landform restoration method with hydrothermal cause siliceous rock as an isochronous datum plane. The karst ancient landform restoration method comprises the following steps: acquiring rock core, slice and logging information; stratigraphic division and comparison are carried out, and the hydrothermal cause siliceous rock bottom boundary is determined to serve as an isochronous reference plane; finely explaining an isochronous reference surface and a target layer erosion surface; calculating the residual stratum thickness between the isochronous reference surface and the target stratum erosion surface; and obtaining a karst ancient landform map according to the residual stratum thickness. According to the method, the principles that the reference surface is isochronous and close to the erosion surface and the earthquake response is clear and easy to track are fully considered, and the recovery precision of the ancient karst landform is greatly improved.

The invention provides a sand body plane shape determining method and a system thereof. The sand body plane shape determining method comprises the steps of determining thickness of a growth layer segment of a construction type sedimentarystructure according to the thickness of trough cross bedding, the thickness of plate cross bedding, the thickness of an erosion surface and retention conglomerate, the thickness of a parallel layer, the thickness of water ripple cross bedding, the thickness of a first thin-layer mudstone and the thickness of a coal layer; determining the thickness of the growth layer segment of a reconstruction type sedimentarystructure according to the thickness of a flushing cross bedding, the thickness of water ripple cross bedding and the thickness of wavemark; obtaining the distribution frequency of the construction type sedimentary structure or the reconstruction type sedimentary structure according to the thickness of the growth layer segment of the constructiontype sedimentary structure and the thickness of the growth layer segment of the reconstruction type sedimentary structure; and determining the sand body plane shape according to the distribution frequency of the construction type sedimentary structure or the distribution frequency of the reconstruction type sedimentary structure. The method and the system have advantages of accurately determiningthe sand body plane shape, improving reservoir prediction precision, improving well drilling success rate and exploration success rate, and satisfying a requirement for high-efficiency exploration.