39results about How to "Suitable for large area construction" patented technology

The invention belongs to the technical field of a new chemical material, and in particular relates to a high-durability super-hydrophobic self-cleaning coating material and a preparation method thereof. The coating material of the invention is prepared by curing and drying nanoparticles with photo-catalytic activity, a low-surface-free-energy polymer and a cross-linking agent at the room temperature, wherein the low-surface-free-energy polymer consists of one or more of polysiloxane fluoride, dimethyl silicone polymer and polyphenylene methyl siloxane, which contain active groups, such as hydroxyl alkoxy group, carbon-carbon double bond, silanol group, siloxy group, and the like; the cross-linking agent is hydrogen-containing silicone oil or aminosilane; and the mass content of the photo-catalytic nanoparticles in the coating ranges from 10 to 60 percent. The coating is formed into a micro-nanostructure by nanoparticle self-organization; a super-hydrophobic self-cleaning coating with lotus effect is prepared from the coating and a cross-linked filming matrix with low surface energy; the persistence of a lotus-shaped super-hydrophobic characteristic of the coating is realized by using the photo-catalytic decomposition characteristic of an organic pollutant for the nanoparticles; and thus the material is suitable for large-area construction and has high weathering resistance andprominent self-cleaning characteristic.

The invention belongs to the technical field of new chemical materials and relates to a photocatalytic type self-repairing super-hydrophobic coating and a preparation method thereof. The coating comprises the following materials: 10-50 percent of thermoplastic film-forming resin, 5-20 percent of low-surface energy material, 1-10 percent of photocatalytic active nano particles, 5-40 percent of hydrophobicity nano particles and 20-60 percent of organic solvent. The preparation method comprises the following steps: firstly, allowing nano particles to be subjected to fluorosilane modification to obtain the hydrophobicity nano particles; then, weighing all components of the coating for mixing, and performing high-speed shearing dispersing to obtain the coating provided by the invention. The coating can be applied to the surfaces of base materials such as steel material, aluminium alloy, plastic and composite in the way of brushing, spraying and the like, and a lotus leaf type super-hydrophobic coating can be obtained through drying. The coating can realize super-hydrophobic self-repairing through UV irradiation after being polluted by organic pollutant or subjected to mechanical wear by external forces, so that the coating has extremely good super-hydrophobic performance and perdurability, and the long-term using performance under the outdoor environments is also ensured.

The invention provides a method for architectural decoration plastering construction. The method comprises the following steps: firstly, base treatment, secondly, screeding, thirdly, plastering, and fourthly, wall surface grinding; screeding in the second step means that construction positioning paying-off is performed according to required plastering height, screeding templates are longitudinally installed along a wall surface subjected to base treatment in the first step according to the paying-off height, and the lateral distance between adjacent screeding templates is 1.3 to 1.8 meters. Wall surface grinding in the fourth step means that the wall surface subjected to plastering in the third step is subjected to standing for 12 to 24 hours till plastering mortar on the wall surface is at a half-dried compact hardened state, and teeth of a saw blade are used for grinding the mortar along the two adjacent screeding templates through a rule till the mortar is even. Due to the method, the plastering construction efficiency can be improved, the construction quality is guaranteed, the large-area construction efficiency is further improved with the matching of mechanized construction, and the defects of low efficiency of traditional manual construction and high technical requirements on constructors are overcome.

The invention discloses wear-resistant cement mortar, a wear-resistant floor and a preparation method thereof, wherein the wear-resistant cement mortar is composed by mixing the following components according to a normal method, by weight, 22-40 parts of ordinary portland cement, 1.9-7.5 parts of slag powder, 1-5 parts of special cement, 1-5 parts of metakaolin, 1-5 parts of gypsum, 40-60 parts of quartz sand, 1-3 parts of calcium silicate seed crystal; 1-7 parts of nano alumina powder and 0.1-0.3 part of a water reducing agent, wherein the special cement is sulphoaluminate cement or aluminate cement. The wear-resistant cement mortar has the advantages of excellent hardness and strength. The wear-resistant floor prepared by the wear-resistant cement mortar has no micro-cracks on the surface after being grinded; good smoothness and various fresh brilliant colors can be obtained; color ordonnance can be realized on the surface with extremely high compactness; and aesthetic patterns with paint effects can be obtained.

The invention discloses a floor coating and a preparation method and application thereof, wherein the floor coating of the invention consists of rubber compound, aggregate, and overlay maintenance agent; the method for preparing the floor coating includes the following steps: (1) preparation of rubber compound and overlay maintenance agent: each component material is added into a stirred tank according to the mentioned certain proportion and stirred for about 10min followed by filter and qualification to discharge; (2) preparation of aggregate: each component of raw material is added into dry-powder mixing tank according a certain proportion, and stirred for 30min, followed by qualification to discharge. The application of the floor coating of the invention includes that: the sealed base layer is firstly coated on the cement base layer by rubber compound, then the middle paint layer is coated on the sealed base layer by aggregate, after that the cover-layer is coated on the middle paint layer by overlay maintenance agent. The floor coating of the invention is a product which has high cost-performance and very good market.

The invention discloses a protuberant hot-melt road marking coating, and a preparation method and a construction method thereof, and relates to the technical field of road marking construction. The protuberant hot-melt road marking coating is mainly prepared from the following raw materials by the weight percentage: 3-8% of petroleum resin, 3-8% of rosin resin, 2-6% of polyamide resin, 0.5-1.5% ofalkyd resin, 20-50% of a reflective material, 1-10% of a pigment, 0-1.5% of an anti-sedimentation agent, and the balance a filler. The defects of poor formability, poor cohesion, poor low temperatureresistance, easy cracking when being used in winter and poor deformation resistance at high temperature of a traditional road marking coating are alleviated. The formula of the protuberant hot-melt road marking coating improves the performance of the coating through the cooperative use of petroleum resin, rosin resin, polyamide resin and alkyd resin; pigments and fillers, the reflective materialand the optional anti-sedimentation agent are added for compounding, so the product has the advantages of good performance, improved high temperature anti-compressive performance, no cracking in winter and no collapse when being pressed in summer.

A method for plastering construction in architectural decoration comprises the following steps: (1) base treatment; (2) performing construction positioning paying-off according to the required plastering height, and longitudinally installing screeding templates along a wall surface subjected to the base treatment in Step (1) according to the paying-off height, a lateral space between adjacent screeding templates being 1.3 to 1.8 meters; (3) plastering; and (4) laying aside the wall surface subjected to the plastering for 12 to 24 hours till plastering mortar on the wall surface is in a half-dried compact hardened state, and using teeth of a saw blade for grinding the mortar along the two adjacent screeding templates through a ruler till the mortar is even. The method can improve the construction efficiency and guarantee the construction quality.

The invention relates to the technical field of anticorrosive coatings, and concretely relates to a self-repairing anticorrosive coating and a preparation method thereof. The self-repairing anticorrosive coating comprises a component A and a component B. The component A comprises, by mass, 20 to 50 parts of epoxy resin, 10 to 16 parts of a solvent, 0.3 to 1.5 parts of a dispersant, 0.2 to 1.5 parts of a thixotropic agent, 38 to 56 parts of a filling material and 1.5 to 5.0 parts of corrosion inhibitor microcapsules; and the component B comprises, by mass, 70-90 parts of a curing agent and 10-30 parts of solvent. The corrosion inhibitor is loaded in an organic-inorganic hybrid carrier, and the obtained material is added into an anticorrosive coating, so the problems that compatibility between corrosion inhibitor microcapsules and a coating substrate is poor, after a corrosion inhibitor is released, a corrosion inhibitor carrier leaves channels for corrosive substances, more defects arecaused, and the mechanical strength of corrosion inhibitor particles is poor are solved, and the prepared coating is high in corrosion resistance, simple in preparation method, capable of being brushed or sprayed and suitable for large-area construction.

The invention discloses whisker reinforcement-based self-leveling cement mortar. The whisker reinforcement-based self-leveling cement mortar comprises the following components in parts by weight: 10 to 20 parts of ordinary Portland cement, 50 to 150 parts of slag powder, 3 to 20 parts of special cement, 10 to 20 parts of gypsum, 5 to 10 parts of metakaolin, 100 to 160 parts of quartz sand, 1 to 10 parts of a crystal whisker and 1 to 1.5 parts of a water-reducing agent, wherein the special cement adopts sulphoaluminate cement or aluminate cement; the gypsum adopts one of or a mixture of more than two of high-strength gypsum, fluorgypsum, desulfurized gypsum and citric acid gypsum; and the crystal whisker adopts one of or a mixture of more than two of gypsum crystal whiskers, a magnesium hydroxide crystal whisker, a magnesium oxide crystal whisker, an ettringite crystal whisker and a calcium carbonate crystal whisker. A terrace prepared from the whisker reinforcement-based self-leveling cement mortar has high surface hardness and high anti-compression and anti-bending strength, and can meet the wear-resistant requirement of most occasions.

The invention discloses a plane and facade construction method for an APF self-adhibiting waterproof roll. The unique construction process-pre-adhibiting method (border adhibiting method) is adopted; in the aspect of innovative construction method selection, dry adhibiting, wet adhibiting, border adhibiting, pre-adhibiting anti-stick methods can be adopted for construction, so that the labor strength is reduced, and the base layer requirement can be met; roll width can be selected from 1m to 2m, so that lap joint reduced, the construction is faster, and the plane and facade construction method is especially suitable for large-area construction; the plane and facade construction method is safe and environmentally friendly; construction on the APF self-adhibiting roll is cold construction, so that the plane and facade construction method is friendly to the environment, and the potential safety hazard of a construction site is eliminated.

The invention discloses a polyurethane coating used on surfaces of polypropylene materials. The polyurethane coating comprises a main ingredient and a curing agent; the main ingredient comprises following ingredients, by weight, 30 to 70 parts of acrylic resin, 5 to 8 parts of an anti-settling agent, 5 to 10 parts of a solvent, 0 to 0.3 part of an antifoaming agent, 0 to 0.3 part of a levelling agent, 1 to 3 parts of a hand feeling auxiliary agent, 1 to 3 parts of a adhesive force promoter, and 20 to 30 parts of a filling material; the curing agent comprises following ingredients, by weight, 10 to 30 parts of TDI trimer, 20 to 40 parts of a TDI addition product, and 40 to 60 parts of a solvent. According to the polyurethane coating used on the surfaces of the polypropylene materials, acrylic resin with excellent adhesive force is selected, and is combined with the special adhesive force promoter, so that the polyurethane coating possesses excellent interlayer adhesive force on the surfaces of the polypropylene materials, is high in glossiness, and is quick for drying. No white scratch is left after finger scratching. The polyurethane coating is suitable for large area construction.

The invention relates to the technical field of coatings, in particular to antiskid wear-resistant polyurethane deck paint and a preparation method thereof. The antiskid wear-resistant polyurethane deck paint comprises a component A and a component B, the component A comprises antiskid wear-resistant filler, and the component A further comprises a resin matrix A and a resin matrix B; wherein the resin matrix A is hydroxyl acrylic resin, and the resin matrix B is polyester polyol resin and / or polyether polyol resin; and the component B comprises an isocyanate curing agent. According to the antiskid wear-resistant polyurethane deck paint, the mechanical properties such as flexibility, impact and adhesive force of the coating are excellent, the antiskid wear-resistant performance and the corrosion-resistant and aging-resistant performance are excellent, heavy object impact and day and night temperature difference and season replacement can be borne, the service life can be effectively prolonged, and the maintenance and repair cost is reduced. The system compatibility is good, the preparation method is simple, and the method is suitable for large-area construction.

The invention provides a colorant composition, which comprises an agent A and an agent B, wherein the agent A comprises the following components in parts by weight: 5-50 parts of aqueous resin, 5-50 parts of alcohol solvent, 5-50 parts of alcohol ether solvent, 0.1-1 part of pH regulator, 0.1-5 parts of thickening agent, 0.1-2 parts of flatting agent, and 10-50 parts of water; the agent B comprises 100 parts of water-soluble color concentrate in weight. The colorant composition provided by the invention is an aqueous colorant; the agent A is a main colorant; the agent A contains aqueous resin; the drying speed of the colorant composition is slowed in the presence of aqueous resin, therefore, the wiping time is proper; the colorant composition provided by the invention is applied to large-area construction; the agent A is free from organic solvents, such as benzene series; the construction taste is little; the colorant composition provided by the invention is lower in health hazard to operators and also lower in environmental pollution; the agent B is the aqueous coloring solution and high in solid content; the agent B and the agent A are good in compatibility, and therefore, the prepared colorant composition is free from decolouration and color separation.

The invention discloses a water-based over-rust coating primer and a preparation method thereof. The primer comprises, by weight, 70-95 parts of a water-based acrylic emulsion, 1.5-6 parts of a coalescing agent, 5-30 parts of water and 0.3-8 parts of other auxiliaries. The primer disclosed by the invention does not use an antirust pigment with heavy metals any more, does not use an antirust pigment containing a zinc element any more, and is thus environment-friendlier; the primer disclosed by the invention does not use tannic acid and other organic acids any more, so no acidic substance residue in any free form exists in a paint film; and the primer disclosed by the invention is excellent in adhesive force, an adhesive force test shows that the adhesive force of the primer is grade 0 (seea scratch test), so the problem of poor adhesive force of a rust conversion coating is solved. The test adhesive force of the primer is still grade 0 after 1000 hours of exposure to salt spray (see adivision test after 1000 hours of exposure to salt spray).

The invention discloses an overhead building outer wall maintenance device which comprises a movable base and a workbench. Movable wheels are arranged at the bottom of the movable base. A small motor is arranged above the movable base. A counterweight box is arranged on the right side of the small motor. A cantilever is arranged between the small motor and the counterbalance box. A pulley is arranged on the upper side of the cantilever. Steel pipes are arranged inside a front guardrail of the workbench at equal intervals. A hanger is arranged on the front guardrail. A rope locking unit is arranged at the top of a left side board of the workbench. A toolbox is arranged inside the left side board. A motor lifter is arranged at the top of a right side board of the workbench. Supporting wheel mounting racks are symmetrically installed on the left side board and the right side board, and every two supporting wheel mounting racks fall into a group. A tripod is arranged at the upper end of a rear guardrail of the workbench. The overhead building outer wall maintenance device is simple in structure, can achieve large-area construction and provides a safe working environment for operators, and the working height can be adjusted conveniently.

The invention discloses a photocured polysilazane coating which consists of the following components in parts by weight: 40-60 parts of vinyl branching modified silazane, 1-10 parts of a photoinitiator 1173, 5-15 parts of butyl acetate, 10-30 parts of spherical silicon powder, 0.1-1 part of a leveling agent, 0.1-1 part of a defoaming agent and 0.1-1 part of a dispersant. The invention further provides a preparation method of the photocured polysilazane coating. The photocured polysilazane coating disclosed by the invention can be cured with UV (Ultraviolet Rays), is high in curing speed and isenergy-saving and environmentally friendly, and a coating film is good in stability and excellent in thermal resistance, weather resistance and solvent resistance.

The invention belongs to the technical field of a new chemical material, and in particular relates to a high-durability super-hydrophobic self-cleaning coating material and a preparation method thereof. The coating material of the invention is prepared by curing and drying nanoparticles with photo-catalytic activity, a low-surface-free-energy polymer and a cross-linking agent at the room temperature, wherein the low-surface-free-energy polymer consists of one or more of polysiloxane fluoride, dimethyl silicone polymer and polyphenylene methyl siloxane, which contain active groups, such as hydroxyl alkoxy group, carbon-carbon double bond, silanol group, siloxy group, and the like; the cross-linking agent is hydrogen-containing silicone oil or aminosilane; and the mass content of the photo-catalytic nanoparticles in the coating ranges from 10 to 60 percent. The coating is formed into a micro-nanostructure by nanoparticle self-organization; a super-hydrophobic self-cleaning coating with lotus effect is prepared from the coating and a cross-linked filming matrix with low surface energy; the persistence of a lotus-shaped super-hydrophobic characteristic of the coating is realized by using the photo-catalytic decomposition characteristic of an organic pollutant for the nanoparticles; and thus the material is suitable for large-area construction and has high weathering resistance andprominent self-cleaning characteristic.

The invention belongs to the technical field of chemical materials, and in particular discloses a super-biparental self-cleaning coating material and a preparation method thereof. The coating material of the invention consists of nano TiO2 particles and organic-inorganic hybridized matrix and obtains super-biparental self-cleaning property through sunlight irradiation, wherein the content of the nano TiO2 particles is 0.5 to 10 percent, and the organic-inorganic hybridized matrix is formed by crosslinking and curing siloxane oligomer (A), phenylpropyl oligomer (B) with alkoxyl silicon group and amino silane (C) at the room temperature. The specific preparation method comprises the following steps: firstly preparing slurry from the nano TiO2 particles, then mixing the slurry, the components A and B, organic diluent and the like, adding C into the mixture, stirring the mixture evenly, then coating the mixture on the surface of a base material, drying the mixture at the room temperature,and irradiating the mixture for a period of time by sunlight to form the coating material with required properties. The coating material is suitable for large-area construction, has good weather resistance and remarkable self-cleaning property, and can be used as a self-cleaning coating on the surfaces of a building external wall, a bridge, an oil field and yard mechanical equipment, a guardrail,a glass curtain wall and the like.

The invention discloses a construction method of terrace coating imitating the natural stone texture. The construction method comprises the specific steps that 1, the imitating stone terrace coating is sprayed on the treated ground face, natural drying is conducted, or at least one of a galling roller, a seaweed roller and a defoaming roller is adopted to make a paint film form a certain texture,and natural drying is conducted. The construction method has the advantages that design is reasonable, operation is easy, the construction efficiency is high, the simulation degree of the texture is high, materials are saved, the skill requirement on construction workers is not high, and the construction quality is good; and the construction method is especially suitable for large area construction.

The invention relates to the technical field of anti-corrosion coatings, in particular to a self-repairing anti-corrosion coating and a preparation method thereof. Self-healing anti-corrosion coatings include component A and component B, wherein component A includes the following raw materials in parts by mass: 20-50 parts of epoxy resin; 10-16 parts of solvent; 0.3-1.5 parts of dispersant; thixotropic agent 0.2-1.5 parts; 38-56 parts of filler; 1.5-5.0 parts of corrosion inhibitor microcapsules; component B includes the following raw materials in parts by mass: 70-90 parts of curing agent; 10-30 parts of solvent. The self-healing anticorrosion coating provided by the present invention solves the problem of poor compatibility between the corrosion inhibitor microcapsules and the coating matrix by loading the corrosion inhibitor in an organic-inorganic hybrid carrier and adding it to the anticorrosion coating. After the corrosion inhibitor is released, the corrosion inhibitor carrier leaves channels for corrosive substances, which brings more defects and poor mechanical strength of the corrosion inhibitor particles. The prepared coating has high corrosion resistance, and the preparation method is simple and can be used Brush or spray, suitable for large area application.

The invention discloses a high-efficient spraying maishi paint. The high-efficient spraying maishi paint comprises water, ethylene glycol monobutyl ether, corrosion remover, cellulose, a pH regulating agent, a pure acrylic emulsion, a styrene-acrylic emulsion, a film-forming auxiliary, an antifoaming agent, snowflake white and a thickening agent serving as raw materials. The invention also discloses a method for preparing the high-efficient spraying maishi paint. The maishi paint provided by the invention is unique and reasonable in formulation design; pure acrylic emulsion is matched with styrene-acrylic emulsion, so that the comprehensive performance of the maishi paint is high, and the weather resistance is improved well; cellulose having a mould-proof anti-algae function is added, so that the suspension property and the lubricating property of the maishi paint are effectively improved, the discharging mobility is high and the constructability is high; therefore, the texture coating is suitable for large-area construction of the large-scale high-efficient spraying machine, high in spraying efficiency and uniform in spraying. A preparation method provided by the invention is simple in process, easy to realize, high in production efficiency; the working period is greatly reduced, the construction efficiency is effectively improved, and a large quantity of labours are reduced; the prepared maishi paint has good quality and is beneficial to wide popularization and application.

The invention discloses a photocuring anti-doodling coating with a self-healing function and a preparation method and application thereof. The photocuring anti-doodling coating is mainly prepared by blending ultraviolet-curable polyurethane resin, a reactive diluent, hydrophobic modified nanoparticles, a photoinitiator and an auxiliary agent; the photocuring anti-doodling coating is prepared from the following components in parts by weight: 10 to 70 parts of UV-curable polyurethane resin, 10 to 40 parts of reactive diluent, 5 to 30 parts of modified nano particles, 0.5 to 10 parts of photoinitiator and 0.1 to 10 parts of additive. A coating layer formed after the coating is coated is good in surface uniformity and smoothness and low in surface energy, and doodling substances and dirt are difficult to permeate into the coating film; meanwhile, after the surface of the coating is physically abraded, hydrophobic substances in the coating can migrate to the surface under damp and hot conditions to automatically repair the damaged surface, so that the anti-doodling performance of the coating is recovered, and the durability of the coating used outdoors is ensured.

The invention relates to a polyaniline / dimanganese trioxide / epoxy resin ternary composite double anticorrosive coating and a preparation method thereof, and belongs to the technical field of anticorrosive coating preparation. A formula of the polyaniline / dimanganese trioxide / epoxy resin ternary composite double anticorrosive coating comprises epoxy resin, an activated diluting agent, polyaniline,a curing agent, dimanganese trioxide nanoparticles, a microorganism inhibiting and killing agent and an addition agent; and the polyaniline / dimanganese trioxide / epoxy resin ternary composite double anticorrosive coating is obtained through preparation of the dimanganese trioxide nanoparticles, preparation of the dimanganese trioxide nanoparticles coated with the microorganism inhibiting and killing agent, and compound preparation. According to the polyaniline / dimanganese trioxide / epoxy resin ternary composite double anticorrosive coating and the preparation method thereof, the preparation process is simple, the cost is low, and the polyaniline / dimanganese trioxide / epoxy resin ternary composite double anticorrosive coating is suitable for large-scale construction, and can be coated on the surfaces of different objects for application through various ways; the polyaniline / dimanganese trioxide synergistic effect can further enhance anti-corrosion performance of the coating; and slow release performance the microorganism inhibiting and killing agent in the dimanganese trioxide nanoparticles endows the coating with long-acting antimicrobial properties, and the double anticorrosive effect is achieved.

The invention discloses a photocurable anti-graffiti coating with self-healing function and its preparation method and application. It is made by blending with other agents; the parts by weight are: 10-70 parts of UV-curable polyurethane resin, 10-40 parts of reactive diluent, 5-30 parts of modified nanoparticles, and 0.5-10 parts of photoinitiator , 0.1 to 10 parts of additives. The coating formed after the coating of the present invention is coated has good surface uniformity and flatness, low surface energy, and graffiti and dirt are difficult to penetrate into the coating film; meanwhile, after the coating surface is subjected to physical abrasion, the hydrophobic substances in the coating Under hot and humid conditions, it will migrate to the surface and repair the damaged surface by itself, so that its anti-graffiti performance can be restored, thus ensuring the durability of the coating for outdoor use.

The invention relates to the technical field of coatings, in particular to an anti-slip and wear-resistant polyurethane deck paint and a preparation method thereof. The anti-slip and wear-resistant polyurethane deck paint includes component A and component B, wherein the component A includes anti-skid and wear-resistant fillers, and the component A also includes resin matrix A and resin matrix B; The resin matrix A is a hydroxy acrylic resin, the resin matrix B is a polyester polyol resin and / or a polyether polyol resin; the component B includes an isocyanate curing agent. The anti-slip and wear-resistant polyurethane deck paint has excellent mechanical properties such as flexibility, impact, and adhesion of the coating, and has excellent anti-slip and wear resistance, corrosion resistance and aging resistance, and can withstand the impact of heavy objects, temperature differences between day and night and seasonal changes , can effectively increase the service life and reduce maintenance and repair costs. Moreover, the system has good compatibility and simple preparation method, and is suitable for large-area construction.

The invention relates to a self-repairing water-based super-hydrophobic coating. The durability aim of the surface performance of an existing super-hydrophobic coating is achieved, and the environment-friendly aim in the preparing process of a traditional super-hydrophobic coating is further achieved. The coating is prepared from, by weight, 10%-50% of aqueous film-forming resin, 5%-40% of microcapsule, 0.1%-10% of photocatalytic activity nanometer particles, 5%-40% of hydrophobicity nanometer particles and 10%-60% of deionized water. After the surface of the coating is subjected to physical abrasion or organic pollution, the microcapsule in the coating is fractured under the effect of photocatalytic degradation and releases fluoroalkyl silane, and the damaged surface is self-repaired, the super-hydrophobic performance of the coating is recovered, and therefore the durability when the coating is used outdoors is guaranteed. According to the self-repairing water-based super-hydrophobic coating, the method is simple, the preparing technology is environmentally friendly, and large-area construction is easy to achieve.

The invention discloses a construction technology for spraying a wear resistant coating. The construction technology specifically comprises the following steps of (1) pretreating surfaces of metal fittings; (2) polishing surface defects of the fittings; (3) performing material grinding on the surfaces of the fittings, so as to achieve roughness required by a coating; (4) integrally spraying special type wear resistant alloy powder on the surfaces of the fitting with a spray gun; (5) heating the metal fittings, so that the wear resistant coating is remelted; and (6) performing polishing treatment on the metal fittings with an abrasive belt. Compared with the prior art, the construction technology disclosed by the invention adopts a manner of hot spraying of the wear resistant coating, the wear resistant coating has excellent wear resistance, and the construction technology is suitable for large-scale construction and high in efficiency.