87 results about "Titanium boride" patented technology

The invention provides a preparation method of prismatic titanium diboride powder, and belongs to the technical field of titanium diboride powder. The preparation method comprises the steps of titanium source preparation, boron source preparation, material mixing, cold isostatic pressing and carbon thermal reduction reaction. The step of preparing the titanium source comprises the following steps: heating TiO2 powder body liquid, raising the temperature to 52-55 DEG C, adding a tetrabutyl titanate solution, uniformly stirring, adding an ammonia water solution to adjust the pH value to 7.0, and carrying out heat preservation stirring for 2.7-3.2 hours to obtain the titanium source; the step of preparing the boron source comprises the following steps: adding B4C powder into absolute ethyl alcohol, carrying out ultrasonic dispersion, then adding a mixed solution, controlling the adding rate of the mixed solution to be 0.8-1.2 g / min, heating to 34-37 DEG C, and carrying out heat preservation and stirring for 3.8-4.2 hours to obtain the boron source; the titanium diboride powder obtained through the method is in a prism shape and is uniform in particle, high in density and purity and poor in high-temperature oxidation resistance.

The invention relates to the field of laser cladding powder, in particular to wear-resistant and corrosion-resistant laser cladding powder and a preparation method thereof. The laser cladding powder is used for solving the problem that a cladding layer formed by existing laser cladding powder is poor in abrasion resistance and corrosion resistance. According to the laser cladding powder, the carbon nano tube loaded lanthanum-yttrium oxide powder and the copolymer coated titanium diboride powder are added, and the carbon nano tube and the lanthanum-yttrium oxide have a synergistic effect to refine grains, so that the corrosion resistance of a cladding layer is improved, and the carbon nano tube has good wear resistance; after the surface of the titanium diboride powder is coated with the copolymer, the dispersity of the titanium diboride is improved, a product decomposed by the copolymer reacts with the titanium diboride under the action of laser to generate titanium carbide, and the wear resistance of a cladding layer is enhanced; the laser cladding powder is suitable for prolonging the service cycle of a mold, can be used for surface strengthening of mine equipment parts, enhances the wear resistance and corrosion resistance of the mine equipment parts, reduces the maintenance frequency of the equipment, and can provide an effective solution for surface strengthening of parts in various industrial fields.

The invention provides high-purity superfine titanium diboride and a preparation method thereof, and relates to the field of titanium diboride preparation. The method comprises the following steps: mixing boron oxide, titanium hydride, a carbon source, nano rare earth oxide and an organic solvent, and drying to obtain a mixture; in a vacuum environment, performing first roasting on the mixture to obtain a first roasted material; and in an oxygen-containing atmosphere, carrying out second roasting on the first roasting material to obtain the high-purity superfine titanium diboride. In the first roasting process, boron oxide, titanium hydride and a carbon source are completely melted and fully contacted, then further, the carbon source forms a carbon skeleton, the contact area between the melted boron oxide and titanium hydride and the carbon skeleton is further enlarged, liquid-liquid mixing and the increase of the contact area can reduce the reaction kinetic conditions, the reaction temperature is greatly reduced, and the reaction time is greatly shortened. The particle size of the generated titanium diboride is reduced, and the molten boron oxide and titanium hydride react on the porous carbon skeleton in a liquid-liquid form to generate the high-purity superfine titanium diboride.

The invention relates to the technical field of material surface engineering and metallurgical equipment, in particular to a composite coating for prolonging the service life of a crystallizer copper plate and a plasma spraying preparation method thereof.The composite coating comprises, by mass, 35%-55% of chromium, 20%-55% of nickel, 5%-10% of titanium diboride, 0.1%-0.3% of niobium and the balance chromium carbide and inevitable trace impurity elements. According to the invention, titanium diboride and chromium carbide are used as main hard reinforcing phases, so that the coating shows excellent wear resistance at normal temperature and high temperature; a hollow graphite electrode is adopted in the spraying process, plasma arc is generated, and meanwhile an ablation product (carbon) provides a carbon source for formation of chromium carbide; the titanium powder and the boron powder are subjected to an in-situ reaction in a plasma arc to generate titanium diboride, and the in-situ synthesis technology enables hard phase particles to be fine and uniformly distributed, and forms a firm interface with a metal binding phase, so that the problems of interface pollution and weak combination caused by the addition of the hard phase are avoided.

The application relates to the technical field of ceramic materials, in particular to a boron carbide composite ceramic material and a preparation method and an etching component thereof. The preparation method comprises the following steps: forming granular materials containing boron carbide, titanium boride and silicon carbide, the granular materials have a spherical structure, the mass proportion of the boron carbide in the granular materials is 70%-90%, the mass proportion of the titanium boride is 5%-25%, and the mass proportion of the silicon carbide is 5%-25%; and the granular materials are sequentially subjected to pre-sintering and hot-press sintering to prepare the boron carbide composite ceramic material; wherein the temperature of the pre-sintering is 1200 DEG C-1500 DEG C. The application can promote the three-dimensional communication growth of sintering necks in the hot-press sintering process, effectively improve the material density, ensure the good uniformity of the material, and synergistically improve the etching resistance of the boron carbide ceramic material.

The invention relates to the field of refractory materials, in particular to a high-strength refractory material and a preparation method thereof, which are used for solving the problem that the existing traditional refractory material is low in strength and difficult to meet the high-standard requirement of modern industry on equipment. The high-strength refractory material comprises the following components: silicon carbide, tabular corundum, silicon powder, yttrium oxide, magnesium oxide, titanium diboride and a phosphorus-containing phenyl multi-epoxy-group binding agent, according to the preparation method, silicon carbide, tabular corundum, silicon powder, yttrium oxide, magnesium oxide and titanium diboride are taken as main raw materials, the main raw materials are endowed with excellent mechanical properties, and after a phosphorus-containing phenyl polyepoxy binding agent is added, the mechanical properties of the main raw materials can be further remarkably improved, so that the prepared refractory material has the characteristics of high strength, high temperature resistance and the like. The composite material shows high durability and reliability in a high-temperature environment, and is suitable for thermal protection in the high-temperature environment and internal construction of high-temperature equipment.

The application belongs to the technical field of refractory materials, and particularly relates to high-strength anti-stripping industrial kiln castable and a preparation method thereof. The industrial kiln castable provided by the application comprises white corundum, modified corundum, petalite, composite micropowder, modified micropowder, a binder and sodium hexametaphosphate. The white corundum, the modified corundum and the petalite are used as aggregates of the kiln castable, the composite micropowder and the nano micropowder are added to fill the aggregate gaps, and the porosity of the castable is reduced. The titanium dioxide is used to dope the corundum to form a solid solution, and a silica ceramic layer is coated on the surface of the nano titanium diboride by using a sol-gel method, so that the interface bonding force between the nano titanium diboride and the matrix is strengthened, the rigid reinforcing points are increased, and the high-temperature compressive strength is improved.

The invention relates to the technical field of metal-based composite materials, in particular to a preparation method of a titanium-based composite material with a bimodal non-uniform net structure. The invention provides a preparation method of a titanium-based composite material with a bimodal non-uniform net structure, which comprises the following steps: mixing titanium alloy metal powder as a base material with nano titanium diboride, lanthanum hexaboride and a silicon powder reinforcement material through high-energy ball milling to obtain composite powder; a field-assisted sintering technology (FHP) is utilized, and a non-continuous reinforced titanium-based composite material (DRTiMCs) sintered blank is obtained; and carrying out heat preservation in a vacuum heat treatment furnace, and then carrying out a hot rolling experiment to obtain the DRTiMCs with the bimodal non-uniform network structure. The bimodal non-uniform net structure is composed of micron TiBw, nano TiBw, nano La2O3 and nano silicide, DRTiMCs of the bimodal non-uniform net structure have excellent strength and ductility, the tensile strength reaches 1544 MPa and 1560 MPa, and the percentage elongation after fracture is 7.7% and 10.2%. The DRTiMCs provide a good working idea for further development and engineering application of the composite material in the fields of aviation and aerospace.

The invention relates to the technical field of semiconductor lead frames, in particular to a high-stability semiconductor lead frame and a preparation method thereof.The preparation method comprises the following steps that 1, copper, nickel, silicon, chromium, phosphorus and modified titanium boride are subjected to ball milling together to obtain mixed powder; 2, the mixed powder is put into a mold for cold press molding, and a green body is obtained; 3, the green body is subjected to sintering treatment and solution treatment, and a composite block is obtained; 4, cold-rolling the composite block into a strip, and performing aging treatment to obtain a composite material; step 5, performing punch forming on the composite material to obtain a semi-finished product of the high-stability semiconductor lead frame; 6, carrying out alkali washing on the semi-finished product, then putting the semi-finished product into a hydrochloric acid solution for derusting, and finally carrying out acid pickling activation to obtain an activated semi-finished product of the high-stability semiconductor lead frame; and 7, putting the activated semi-finished lead frame product into a chemical plating solution composed of nickel, tungsten, phosphorus and a graphene composite material for electroplating, and then drying to obtain the finished high-stability semiconductor lead frame.

The invention relates to the technical field of self-lubricating fabric liner materials, in particular to a composite filler synergistically-enhanced high-temperature-resistant self-lubricating fabric liner composite material and a preparation method thereof. The invention provides a self-lubricating fabric liner composite material. The self-lubricating fabric liner composite material comprises a polyimide fabric and a polyimide resin composite material compounded in the polyimide fabric, the polyimide resin composite material comprises polyimide resin and a composite reinforcing material dispersed in the polyimide resin; the composite reinforcing material comprises boron nitride and titanium boride. The self-lubricating fabric liner composite material can bear the operation requirement of 400 DEG C high-temperature working conditions.

The application belongs to the field of ceramic materials, and particularly relates to a preparation method of a porous titanium boride alloy / hydroxyapatite fluoride composite material. 10 (PO4)6OH 2‑2x F 2x Wherein, x is 0.1-0.6; in the mixture, the weight ratio of TC4, TiB2 and FHA is 86-94:3-7:3-7; the sintering temperature is 1000-1100 DEG C. The application also includes the composite material prepared by the preparation method and the application of the composite material in oral implant materials. The preparation method can realize synergy, improve the strength and biological activity of the material based on the combination of components, proportions and sintering processes.

This invention relates to the fields of materials surface engineering and metallurgical equipment technology. Specifically, it relates to a composite coating for improving the lifespan of copper plates in crystallizers and its plasma spraying preparation method. The chemical composition, by mass percentage, includes: 35%-55% chromium, 20%-55% nickel, 5%-10% titanium diboride, 0.1%-0.3% niobium, with the balance being chromium carbide and unavoidable trace impurities. In this invention, titanium diboride and chromium carbide are used as the main hard reinforcing phases, enabling the coating to exhibit excellent wear resistance at both room temperature and high temperature. During the spraying process, a hollow graphite electrode is used, generating a plasma arc. Simultaneously, the ablation products (carbon) provide a carbon source for the formation of chromium carbide. Titanium powder and boron powder undergo an in-situ reaction in the plasma arc to generate titanium diboride. This in-situ synthesis technology results in fine and uniformly distributed hard phase particles, forming a strong interface with the metal binder phase, avoiding the problems of interface contamination and weak bonding caused by externally added hard phases.

The application discloses a ceramic roller rod and a preparation method thereof, and relates to the technical field of ceramic matrix composites.The ceramic roller rod comprises a core layer, a transition layer and a surface layer;the layered gradient structure of the core layer, the transition layer and the surface layer is designed, alumina-zirconia, alumina-mullite and silicon nitride-titanium boride composite ceramic matrices are selected for each layer, and special matrix-reinforcing phase combinations are formed by matching nano silicon carbide particles, boron nitride particles and graphene microsheets;meanwhile, a pretreatment process of separately ball-milling and screening raw materials of each layer is adopted, thus solving the problems of the existing roller rod, such as single matrix matching conventional reinforcing phase, no functional doping ratio and easy agglomeration of overall mixed raw materials, so that the matrix and the reinforcing phase of each layer form material synergy, and the different functional requirements of the core bearing, the intermediate layer connection and the outer surface wear resistance and high temperature resistance are met respectively, and precise adaptation of material performance and functions of each part of the roller rod is realized.

The application discloses a kind of biomimetic laminated ballistic ceramic material, including matrix layer and embedded layer composition, it is matrix layer, embedded layer, matrix layer in turn by outside inside alternately stacked composition, wherein matrix layer is by B4C powder, SiC powder, nano additive, binder and plasticizer are made, embedded layer is Al2O3 powder, MgO or titanium boride at least one, hexagonal boron nitride powder, binder and plasticizer are made.The biomimetic laminated ballistic ceramic of the application has the advantages of light weight, high hardness, high toughness, good effect of anti-intensive attack, etc.Cutting after the ceramic sample is handled, and the target sample piece with the face density of about 27.5kg / m 2 The target sample piece is prepared by compounding with ultra-high molecular weight polyethylene fiber plate, 95 type 5.8mm ordinary bullet is carried out, and multiple bullet shooting can be effectively defended, and the highest can be continuously defended 8 bullet shooting, and the application is suitable for the protection demand of various light armored equipment and individual protection equipment to small caliber bullet, and the survival rate in battlefield is improved.

The application discloses a kind of powder preparation devices of titanium diboride for lithium battery preparation, including preparation container, controller, gas pressure gauge and servo motor, the output end of the servo motor passes through preparation container and is fixedly connected with ball screw nut pair, kettle wall contact component is arranged outside the ball screw nut pair, specifically relates to titanium diboride powder preparation technical field, the dispersion component rotation is realized when screw shaft axial rotation and is driven to realize the dispersion stirring operation of kettle body bottom material, the preparation rate of material can be promoted by dispersion component rotation and drives material stirring, and the purpose of kettle body wall scanning and dispersion component dispersion material can be completed under the premise that only one servo motor works, so that the purpose of promoting material preparation rate and reducing material loss can be simultaneously realized in energy-saving environment, effectively realize the purpose of reducing cost and improving yield and product quality.

To provide a method for producing a high-rigidity iron-based alloy that suppresses aggregation of titanium boride in an iron-based matrix.SOLUTION: The present invention relates to a method for producing a high-rigidity iron-based alloy, the method including (i) a step of mixing an iron-based powder and a titanium boride powder to obtain a mixed powder, and (ii) a step of processing the mixed powder obtained in step (i) by an additive manufacturing method involving laser irradiation to obtain a high-rigidity iron-based alloy, the method including a step in which a laser scanning speed is 1000 mm / second to 2600 mm / second.SELECTED DRAWING: Figure 2

This invention relates to the field of sliding materials for seismic isolation bearings, specifically disclosing a high-temperature resistant and wear-resistant composite material for building seismic isolation bearings and its preparation method. The high-temperature resistant and wear-resistant composite material for building seismic isolation bearings comprises the following raw material components in parts by weight: aliphatic polyketone, high-styrene resin-modified methyl vinyl silicone rubber, silicone resin, fluorosilicone rubber, polytetrafluoroethylene, high-temperature resistant filler, lubricant, compatibilizer, and coupling agent; the high-temperature resistant filler comprises the following raw material components: chopped basalt fiber, titanium diboride, silicon nitride, and ceramic powder. The high-temperature resistant and wear-resistant composite material for building seismic isolation bearings prepared by this invention synergistically improves the material's wear performance, thermal stability, and compressive modulus through mechanisms such as hard embedding of filler, elastic energy absorption of rubber and plastic, and self-lubricating interface construction, thus overcoming the shortcomings of existing technologies.

The invention belongs to the technical field of refractory materials, and particularly relates to a high-strength anti-stripping industrial kiln castable and a preparation method thereof. The industrial kiln castable provided by the invention is prepared from white corundum, modified corundum, petalite, composite micro powder, modified micro powder, a binding agent and sodium hexametaphosphate. White corundum, modified corundum and petalite are adopted as aggregates of the kiln castable, and composite micro powder and nano micro powder are added to fill gaps of the aggregates, so that the porosity of the castable is reduced; the corundum is doped with titanium dioxide to form a solid solution, and the surface of the nano titanium diboride is coated with a silicon oxide ceramic layer by a sol-gel method, so that the interface bonding force between the nano titanium diboride and a matrix is enhanced, rigid reinforcing points are increased, and the high-temperature compressive strength is improved.

To provide a fiber which radiates far-infrared rays having sufficient intensity even in clothing having a thin cloth, and can promote blood circulation of a wearer, a cloth containing the fiber and clothing.SOLUTION: A fiber is used in clothing. The fiber has a thermoplastic resin, and ceramic powder dispersed in the thermoplastic resin. The ceramic powder contains one or two or more kinds of first ceramic components selected from the group consisting of titania, titanium carbide and titanium boride, and one or two or more kinds of second ceramic components selected from the group consisting of zirconia, zirconium carbide and zirconium boride. A mass ratio of the first ceramic component in the ceramic powder is 40 mass% or more and 80 mass% or less, and a mass ratio of the second ceramic component in the ceramic powder is 10 mass% or more and less than 25 mass%. The content of the ceramic powder in the fiber exceeds 1.2 mass% and 1.8 mass% or less.SELECTED DRAWING: Figure 1

The invention discloses a glass lubricant for improving high-temperature lubricating performance through boride ceramic as well as a preparation method and application of the glass lubricant, and relates to the technical field of high-temperature lubrication. The glass lubricant comprises the following components in percentage by mass: 90-99% of glass powder and 1-10% of boride ceramic powder, wherein the total mass percentage of the glass powder and the boride ceramic powder is 100%. And the boride ceramic powder is one or more of TiB2, TiB and Ti2B5. The titanium boride and the glass lubricant are used as raw materials, and the titanium boride is introduced into the glass lubricant, so that the glass lubricant has a lubrication promoting effect and structural stability in a glass lubricant system, and the lubrication requirement under a high-temperature condition is met while the oxidation resistance at medium and low temperatures is maintained.

The invention provides a preparation method of large-size titanium diboride powder, and belongs to the technical field of titanium diboride powder. The preparation method comprises the following steps: pretreating modified titanium dioxide and carbon black, and mixing and sintering. The step of modifying titanium dioxide comprises the following steps: adding boric acid and lithium carbonate into an ethanol solution, then adding titanium dioxide, and carrying out ultrasonic dispersion to obtain coated titanium dioxide; adding the coated titanium dioxide into a niobium nitrate solution, stirring for 20-30 minutes at room temperature, drying, and roasting for 110-120 minutes at the temperature of 580-600 DEG C to obtain modified titanium dioxide; the titanium diboride powder prepared by the method is uniform in size distribution, high in purity and good in stability.

A Ramjet solid fuel comprising up to 50% metal by weight selected from the group consisting of aluminum, boron, boron carbide, magnesium, titanium, and titanium boride; between 2.0 and 9.0 weight percent fluorinated combustion aids selected from the group consisting of 3-hydroxybenzo trifluoride (3HBTF), hydroxyfluoro-2-propanol (HF2P), polytetrafluoroethylene, and trifluoroethanol (TFE); and up to 48% by weight of the remaining component being a hydroxyl terminated, epoxidized polybutadiene polymer (Poly BD 605E) (HO—CH2-CH═CH—CH2-CH2-CH—O—CH—CH2-CH2-CH—(CH═CH2)-CH2-CH═CH—CH2-CH2-CH—O—CH—CH2-OH).

The invention belongs to the technical field of metal-based composite materials, and relates to a multi-scale ceramic phase reinforced 750 DEG C-resistant titanium-based composite material and a preparation method thereof. The composite material is formed by compounding a matrix and multi-scale ceramic, the multi-scale ceramic phase is micron-scale titanium boride and nano-scale lanthanum oxide, the matrix is a near-alpha type Ti-Al-Zr-Sn-Mo-Nb-W-Si alloy, the mass parts of all elements including 6-8 mass parts of Al, 7-9 mass parts of Zr, 5-7 mass parts of Sn and the like are stipulated in the matrix, and through quantitative adding and in-situ reaction of LaB6, the multi-scale ceramic phase and the near-alpha type Ti-Al-Zr-Sn-Mo-Nb-W-Si alloy can be obtained. The total content of micron TiB and nano La2O3 is precisely regulated and controlled (the total integral number of the reinforced phase is increased by about 2.3% every time the increase of LaB6 is 0.5%), the in-situ generated reinforced phase is firmly combined with a matrix interface, impurity pollution is avoided, and the problems of agglomeration and interface combination of externally added ceramic particles are avoided.

The invention provides a titanium boride-aluminum oxide composite ceramic and a laser additive manufacturing method, and the method comprises the following steps: mixing titanium source powder, aluminum powder and boron source powder, and carrying out vacuum drying to obtain a powder dry mixture; uniformly spreading the dry powder mixture, placing the dry powder mixture in an environment with the vacuum degree larger than or equal to 102Pa and larger than or equal to 100Pa, then filling argon with the purity of 99.99% until the pressure intensity of the vacuum environment reaches one standard atmospheric pressure, and then scanning the spread dry powder mixture layer by layer through a selective laser sintering method, and performing in-situ synthesis / sintering reaction on the spread powder dry mixture through laser induction to prepare the titanium boride-aluminum oxide composite ceramic. The product prepared by the method has the characteristics of high density, excellent mechanical property, low surface roughness and high dimensional precision.

The application provides a high-pressure corrosion-resistant hard alloy material and a preparation method and application thereof, and belongs to the technical field of alloy materials. The application improves the strength, toughness and corrosion resistance of the material by constructing titanium boride, silicon carbide and chromium diboride hard phases, introduces a multiphase composite binder composed of aluminum-iron alloy, high-entropy alloy and cerium hexaboride to realize high-temperature dense coating, and adopts asymmetric gradient paving and sintering process to construct a gradient structure with high surface hardness, high toughness in the core and stress concentration reduction in the transition layer. Meanwhile, the surface hardness and sealing property are strengthened by powder embedding and calcination, and the wear resistance, corrosion resistance and impact resistance of the material are comprehensively improved.

Provided are methods to convert—through a bottom-up approach—binary and ternary titanium carbides, nitrides, borides, phosphides, aluminides, and silicides into lepidocrocitic nanofilaments that in some cases self-assemble into 2D flakes by immersing them in a quaternary ammonium solution at moderate temperatures. The resulting flakes can be C-containing layers that are in turn comprised of nanofilaments in cross-section, some of which nanofilaments can be few microns long in some instances.

According to the present invention, a fiber is used for clothing. The fiber contains a thermoplastic resin and ceramic powder dispersed inside the thermoplastic resin. The ceramic powder includes one or more first ceramic components selected from the group consisting of titania, titanium carbide, and titanium boride, and one or more second ceramic components selected from the group consisting of zirconia, zirconium carbide, and zirconium boride. The mass ratio of the first ceramic component in the ceramic powder is 40 mass% to 80 mass%, and the mass ratio of the second ceramic component is 10 mass% to 60 mass%.

The invention relates to the technical field of high-strength fittings, in particular to a preparation method of a high-strength fitting with a high-temperature-resistant coating. The preparation method comprises the following steps that S1, pretreatment is conducted, specifically, surface pretreatment is conducted on the fitting, and a base body is obtained; s2, preparing a plasma spraying coating, wherein the plasma spraying coating comprises the following raw materials: 304 stainless steel powder, chromium carbide, titanium carbide, titanium diboride, low-density polyethylene, aluminum, titanium nitride and yttrium oxide. According to the method, the surface of the base body can be coated with the paraffin, particle materials in the plasma spraying material serve as hard supports and are evenly dispersed in the 304 stainless steel powder material, particles are molten and embedded into the metal base body under the high-temperature effect of plasma spraying, and at the moment, the paraffin covering the surface of the base body can play a role in delaying combination; therefore, the plasma spraying material and the substrate are effectively combined in a stable high-temperature state, the stability of the coating is improved, and the wear resistance and high-temperature stability of the hardware fitting are effectively improved.

The invention discloses a medium-low temperature aluminum nitride ceramic heater and a preparation method thereof. The medium-low temperature aluminum nitride ceramic heater comprises an aluminum nitride ceramic substrate and a metal water-cooling base or a ceramic connecting support body which are sequentially arranged from top to bottom, wherein the metal water-cooling base or the ceramic connecting support body is used for supporting the aluminum nitride ceramic substrate; the aluminum nitride ceramic matrix is prepared from the following raw materials in percentage by mass: 85-95% of aluminum nitride, 3-5% of yttrium oxide, 0-10% of titanium nitride, 0-10% of titanium diboride, 0-5% of silicon carbide, 0-5% of tungsten carbide and 0-5% of titanium dioxide. According to the aluminum nitride ceramic heater, the formula of the aluminum nitride ceramic matrix of the aluminum nitride ceramic heater is optimized, other materials such as yttrium oxide, titanium nitride, titanium diboride, silicon carbide, tungsten carbide and titanium dioxide are introduced, and the content of each component is changed through formula blending, so that the purpose of performance optimization is achieved; the volume resistivity of the aluminum nitride ceramic heater in the medium and low temperature environment is effectively reduced, the adsorption force in the machining process is guaranteed to meet the requirement, the preparation technology is simple, operation is easy to control, and industrial production is facilitated.