1、 Power system:

1. Boiler water wall tubes, superheater tubes, reheater tubes, and coal (or oil) economizer tubes in thermal power plants, referred to as "four boiler tubes", are coated with anti-corrosion and wear-resistant coatings; 　　

2. Thermal power plant steam turbine cylinder head joint surface leakage coating repair; 　　

3. Spray welding repair and surface strengthening of suction and exhaust fan impellers and pulverizer system in thermal power plants; 　　

4. Anti cavitation erosion spray welding layer for guide center, gate shell, drainage relief pipe, runner, guide vane ring, housing and other parts of hydraulic turbine flow passage of hydropower station; 　　

5. Repair of worn crankshaft of diesel generator; 　　

6. Spraying of wind power generation base.

2、 Metallurgical system:

1. Repair and strengthening of various rolls; 　　

2. The seamless steel pipe production enterprise adopts the composite rolling top manufactured by spray welding process to replace the cast steel rolling top, which increases the service life by more than 4-5 times; 　　

3. The raw material of blast furnace slag mouth and tuyere is red copper, which has poor corrosion resistance to molten iron. Plasma spraying of red copper+Ni-Cr-AL+Ni/Al2O3 ceramics and oxides has increased the service life by more than one time; 　　

4. Continuous decarburization annealing unit for silicon steel sheet. The service limit temperature of the bottom roll with graphite carbon sleeve in the furnace is 950 ℃. It is impossible to produce one-time cold-rolled high-grade silicon steel sheet at a higher temperature. The new furnace bottom roll with plasma, supersonic flame, explosive spraying ceramic and cermet coating has a service life of more than 3 months above 920 ℃, and an average service life of more than 6 months below 920 ℃, The longest time is more than one year. The new furnace bottom roll replaces imports, saves foreign exchange, and creates significant indirect economic and social benefits of hundreds of millions of yuan; 　　

5. A roll of continuous casting machine is worth hundreds of thousands of yuan. Due to continuous operation at high temperature, it is constantly deformed due to high temperature oxidation. China's Baosteel, Wuhan Iron and Steel and other units have absorbed foreign advanced experience to repair and strengthen the roll of continuous casting machine with automatic submerged arc welding, plasma spraying or supersonic flame, gas explosion spraying Ni Cr AL+composite ceramic coating; 　　 6. Repair and strengthen various shafts, imported automobile crankshafts, etc.

3、 Non ferrous metal industry system:

1. The plungers of large extruders such as non-ferrous, metallurgical and petrochemical hydraulic presses and oil presses with a capacity of more than 1000 tons were successfully repaired with oxyacetylene flame self fluxing alloy powder spray welding method. The original price of a φ 850 × 5500 plunger was 280000 yuan. Hundreds of large plungers were considered as "national treasures", and good economic benefits were received; 2. Repair of various rolls in copper processing plants and extrusion forming nozzles of carbon electrodes in aluminum plants.

4、 Coal system:

1. Coal mine shaft equipment is sprayed with zinc, aluminum and plastic corrosion resistant coatings; 　　

2. Alloy spray welding wear-resistant coating is adopted for the middle groove and plunger of coal scraper.

5、 Petroleum system:

1. Thermal spraying aluminum coating with thickness of 100-150 μ m and inorganic zinc rich coating sealing layer with thickness of 50-80 μ m are used in large steel oil tanks in the refinery, and the anti-corrosion life can reach more than 15 years; 　　

2. The service life of the oil field drill pipe joint by plasma spray welding is more than one time longer than that of the original 35CrMo drill pipe joint; 　

3. Repair of various pumps and plungers; 　　

4. Repair and strengthen various shafts, imported automobile crankshafts, etc.

6、 Chemical industry:

1. Metal coating: aluminum, zinc, tin, lead, stainless steel and other anti-corrosion coatings are sprayed on the internal surfaces of the carbonization tower, gas holder, brewery storage tank, beer fermentation tank, distillation tower, various chemical containers, etc. of the fertilizer plant, and large gate valves are repaired; 　　

2. Ceramic coating: the internal surface of new reaction kettles made by pharmaceutical, biochemical, food and chemical enterprises is sprayed with AL2O3, Cr2O2, TiO2 and other ceramic coatings after sand blasting to replace the glass enamel coating or repair coating of partial falling off of the reaction kettle; 　　

3. Plastic coating: nylon antifriction and wear-resistant coating, polyethylene EVA resin, chlorinated polyether, epoxy resin and other anti-corrosion coatings make up for the shortage of electrostatic spraying.

7、 Machinery industry:

1. A large butterfly valve is worth more than 10000 yuan. An oil field consumes at least 20 large valves a year. According to the annual consumption of more than 200 large valves in the top ten oil fields in China, if the annual consumption of large valves in other industries is considered, the use of 1Cr18Ni9Ti material for spraying and repairing can increase the service life of the valve by 1-2 times at 350 ℃, The annual economic benefit of this item alone in the oil sector is more than 10 million yuan; In addition to oil fields, according to the survey of some valve manufacturers and several soda plants, the actual service life of domestic 2040 cast iron gate valves is only 720 hours, far below the national standard of 3000 hours. Several soda plants and other chemical industries throughout the country have an annual demand of tens of thousands of such large valves. Because the service life does not meet the requirements, the loss is considerable. Practice has proved that the service life of nickel based tungsten carbide coating sprayed on the surface of ordinary steel can be increased by 3-4 times. If the service life is doubled by comprehensive promotion, the annual economic benefit will be tens of millions of yuan; 　　

2. Repair of various imported automobile engine crankshafts, diesel locomotive crankshafts, marine crankshafts, mine air compressor crankshafts, various large motor rotor shafts, and Roots fan shafts; 　　

3. Repair of screw conveying rod, various die-casting, injection molding, rubber mold, glass mold, cold punching, drawing, hot forging, hot extrusion, hot pressing, hot punching and other molds; 　

4. Arc spraying rapid manufacturing mold.

8、 Papermaking, printing and packaging industries:

1. The paper drying cylinder is sprayed with stainless steel and other anti-corrosion and wear-resistant coatings; 　

2. The breast roll and calender roll are sprayed with copper instead of electroplating copper coating;

3. Four color offset press imprint drum damage or wear repair;

4. Four pairs of corrugated cardboard pressing rollers in the carton factory were repaired;

9、 Sugar industry: sugar plants are distributed in Guangdong, Guangxi, Hainan, Fujian, Yunnan and so on. L300, 1000 and 2000 types of press bottom combs and top combs are coated with alloy spray welding anti-corrosion and wear-resistant coatings;

10、 Textile industry:

1. Various textile machine accessories of chemical fiber, textile, printing and dyeing, cotton, wool and linen, various types of double twister spindle rings, friction discs, various types of wire guides, textile machine winding grooves, and other surfaces are coated with aluminum oxide and titanium oxide wear-resistant coatings; 　　

2. Repair of the extrusion damage of the nonwoven press roll;

11、 Railway system:

1. The rail of Beijing Guangzhou, Longhai, Baocheng, Luoyang and other railway trunk lines in China is scratched, chipped, low joint, low collapse of long rail weld, and the inner side of the outer strand steel of the track curve is worn. Oxyacetylene flame alloy powder spray welding wear-resistant coating is used; 　

2. Spraying repair of diesel locomotive crankshaft, locomotive leading motor shaft, double unit shaft, air exchange pump impeller shaft, casing air valve piston and other parts;

12、 Long term protection of steel structure: for large steel structure bridges, ships, sluice gates, water and chemical medium storage tanks, iron towers, communication devices, highway facilities, power plant booster station distribution devices, underground cable supports, buoys of navigation aids, etc. exposed to the outdoor atmosphere for a long time, aluminum, zinc and its alloy composite coatings are sprayed instead of traditional paint methods, Cathodic protection is used for long-term anti-corrosion projects, such as the National 8201 Project, Wuhan, Shanghai, Shenyang, Shanxi TV Tower, Jinan Tai'an, Guangzhou Zhanjiang Microwave Tower, Jingtong Highway, Xi'an, Chongqing, Xining City Overpass, Fengzhen, Yangliuqing, Qinhuangdao, Luanhe, Mudanjiang and other power plants' power distribution devices and other large-scale projects have all adopted aluminum and zinc spraying for long-term anti-corrosion, Among them, more than 40000 square meters of steel structural parts of the 50kv booster station of Inner Mongolia Fengzhen Power Plant have been sprayed with zinc for corrosion prevention, and the national average is more than 1 million square meters per year. This technology has been widely promoted and applied, and has achieved significant economic benefits;

13、 Aerospace, aviation and national defense: thermal spraying started in the national defense and military industry in China, and then gradually developed into civil products. So far, missile, rocket, satellite, tank parts, aeroengine blades, flame throwers, missile skids and other pre protective coatings and repair strengthening coatings;

14、 Architectural decoration:

1. It takes a lot of copper materials to cast a copper statue in a large plastic sculpture. If a layer of decorative coating such as brass, bronze, aluminum, stainless steel, and colored plastic is sprayed on the surface of the plastic sculpture in cement, plaster, and resin, it is economical and beautiful. In recent years, Daqing, Beijing, Jiangxi, Sichuan, Yunnan, and other places have made many large plastic sculptures by thermal spraying, The effect is very good; 　　

2. Large murals can be sprayed by thermal spraying, such as the mural "Peacock opens its screen" on the second floor hall of Shenyang International Mall, and the large mural "Flying Sky" on the gate of Beijing Fangshan Science and Technology Bureau, which are all made by thermal spraying, with good results;

15、 Medical and health care: In recent years, with the development of thermal spraying technology, the stainless steel skeleton is used as the substrate surface, and the plasma spraying ceramic coating is used to prepare the artificial skeleton. The clinical practice has reached hundreds of cases, and the effect is very good

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