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Thermal spray industry applications and typical cases

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Author : Pei Ze Technology
Update time : 2019-09-16 14:23:35
 
Industry: Automotive Shipbuilding Industry
Solution: arc spray, supersonic flame spray
Specific application components: car engine base, synchronizing ring, crankshaft; gearbox housing, cylinder plunger, front and rear axle support shaft, gantry guide, engine main bearing pad, rocker shaft, half shaft oil seal, pin, cylinder Bed sealing surface, hub, universal joint and piston ring, valve lifter; dredger, hoe, weaving ring, mud bucket, twisting blade, shovel tooth, mud pump impeller, ship's boring axis,
bushings, eccentric bushings, gear drive shafts, mud pump water seal necks, mud slides, scraper scrapers, propellers, propellers; decks, hulls, guardrails, anchors, etc.
Industry: Petrochemical Industry
Solution: flame spray welding, supersonic spraying
Specific application components: oil-specific high-pressure wellhead valve plate, valve stem, valve seat, various specifications of pump plunger, booster pump plunger, drill pipe coupling, sucker rod coupling, sucker rod, polished rod and The internal and external walls of the petroleum refining and chemical plant, offshore working platforms, oil liquefaction, vaporization of large-diameter pipelines, pumping unit fuselage, fences, guardrails, anti-theft well squatters, oil trees, metering station pipeline facilities, etc.
Industry: Power Industry
Solution: high speed arc spraying, subsonic spraying
Specific application components: four tubes (water wall, superheater, reheater, economizer or fuel saver) of circulating fluidized bed boiler and pulverized coal boiler of thermal power plant, combined with coal turbine head and face, exhaust fan and suction fan Impeller, coal grinding system, hydro turbine over-flow position, gate shell, drainage decompression tube, runner, vane ring, casing, etc., diesel generator crankshaft, wind turbine base.
Industry: Machinery Manufacturing Industry
Solution: high speed arc spraying, flame spray welding
Specific application components: traditional and modern manufacturing and processing enterprises will encounter more or less processing and product parts and components in the production process, and the dimensional processing is too poor and damage, and the new product needs special surface performance requirements. Spray technology can not only solve the defects of products and parts, but also increase the mechanical properties, especially the new parts, new products, surface wear resistance, corrosion resistance, high temperature resistance, oxidation resistance, heat insulation, electrical conductivity, anti-microwave radiation, insulation A series of functions and protections.
Industry: Chemical Fiber Textile Industry
Solution: supersonic spraying, high speed arc spraying
Specific application components: roller on the textile machinery, guide wire hook, rapier weaving machine selection weft finger; spalling machine large pressure roller, small pressure roller, cylinder shaft, cast iron outer plate, roll surface, cotton roller shaft, upper Sickle drive shaft, doffer shaft; sizing machine venting valve, drying room side shaft plane joint, immersion flower blue shaft, sizing roller head, spindle shaft force, yarn guide roller, pressure roller, regain moisture measuring roller, Shaft journal, threader journal, large roller (black roller), finishing machine roller, hot roller and fan roller, guide roller, printing roller surface and journal, friction disc (sheet). The surface of textile chemical fiber mechanical parts is sprayed with wear-resistant ceramic coating.
Industry: Metal Line Industry
Solution: Supersonic spraying
Specific application components: wire drawing wheel, wire drawing tower wheel, wire drawing cylinder, take-up wire, guiding groove of metal wire equipment.
Industry: Mold Making Industry
Solution: plasma spray welding, supersonic flame spraying
Specific application components: plastic mold, die-casting mold, cold-punching mold, hot forging mold, cast iron mold, drawing mold.
Industry: Sealed valves
Solution: plasma spray welding, supersonic spraying
Specific application components: metal pneumatic ball valves, electric ball valves, hydraulic ball valves, gas-liquid ball valves, electro-hydraulic ball valves used in petroleum refining, long-distance pipeline, chemical, paper, pharmaceutical, water conservancy, electric power, municipal, steel and other industries , turbine drive ball valve, etc.
Industry: Food Industry
Solution: Supersonic flame spraying
Specific application components: noodle production equipment, pressure roller.
Industry: Carbon Fiber Industry
Solution: Supersonic flame spraying
Specific application components: carbon fiber production equipment, coating rolls.
Industry: Roll Repair
Solution: supersonic flame spraying, plasma spray welding
Specific application components: thin steel plate cold rolling continuous line, excessive roller.
Industry: Steel Industry
Solution: supersonic spraying, explosive spraying, plasma spraying
Specific application components: converter hood skirt, high temperature corrosion of flue, continuous casting production line support roller, guide roller, pinch roller, slab continuous casting line crystallizer, conveying roller and various process rolls; tension roller of cold rolling machine production line Straightening roller; continuous annealing furnace bottom roller; sinking roller, tension roller and guiding roller of continuous hot dip coating production line.
Industry: Textile Printing and Dyeing Industry
Solution: supersonic spraying, high speed arc spraying
Specific application components: welding type drying cylinder, cold water roller, air permeable roller; straight roller under the mercerizing machine, camshaft, roller and various inlet and outlet iron plates, gears, drive shaft; guide roller, weaving shaft of the combined machine head.
Industry: Screws and Plungers
Solution: Supersonic spraying
Specific application components: screw and high pressure pump plunger.
Industry: Printing Industry
Solution: supersonic spraying, arc spraying, plasma spraying
Specific application components: flexographic printing machine anilox roller, paper feed roller, paper guide roller, embossing roller, carton corrugated roller, corona roller.

Industry application
First, the power system:
1. Water-cooled wall pipe, superheater pipe, reheater pipe, coal-saving (or oil) pipe of boiler in thermal power plant, referred to as “four boilers of boiler” spraying anti-corrosion wear-resistant coating;
2. Leakage spray repair of steam turbine cylinder head joint surface of thermal power plant;
3. Spray welding repair and surface strengthening of suction and exhaust fan impellers and coal mill systems in thermal power plants;
4. The anti-cavitation and erosion spray-welding layer of the over-flow part of the turbine of the hydropower station; the gate shell, the drainage decompression tube, the runner, the vane ring, the cover;
5. Repair of the crankshaft of the diesel generator after wear;
6. Spraying of the wind power base;
Second, the metallurgical system:
1. Various roll repair and reinforcement;
2. The seamless steel pipe production enterprise adopts the composite rolling roof manufactured by the spray welding process instead of the cast steel roof to improve the service life by 4-5 times;
3, the blast furnace slag mouth, the original material of the tuyere is copper corrosion-resistant magnet water corrosion is poor, using plasma spray copper + Ni-Cr-Al + Ni / Al2o3 ceramics and oxides, to increase the life expectancy more than double;
4. The continuous decarburization annealing unit of silicon steel sheet, the limit temperature of the graphite carbon sleeve bottom roller used in the furnace is 950 °C, and it is impossible to produce one-time cold-rolled high-grade silicon pot sheet at higher temperature with plasma, supersonic flame and explosion spraying. The new furnace bottom roller for ceramic and cermet coating has a service life of more than 920 °C for more than 3 months, and the average service life below 920 °C is more than 6 months, and the longest is more than one year;
5. The continuous casting machine roll has a value of RMB tens of thousands of yuan. Due to continuous high temperature operation, it is subject to high temperature oxidation and scale deformation. China Baosteel, Wuhan Iron and Steel and other units absorb advanced foreign experience and use automatic submerged arc welding for continuous casting machine rolls. , plasma spray or supersonic flame, gas explosion spray Ni-Cr-Al+ composite ceramic coating repair and strengthening;
6. Repair and strengthen various shafts and imported automobile crankshafts;
Third, the non-ferrous metal industry system:
1. Non-ferrous metallurgy, metallurgy, petrochemicals, hydraulic presses, hydraulic presses, etc., large-scale extruder plungers, etc., using oxyacetylene flame self-fluxing alloy powder spray welding method, successfully repairing the original price of φ850X5500 plunger of 280,000 yuan, is considered to be "National Treasure" has hundreds of large plungers and has received good economic benefits;
2. Repair of various electrode and aluminum alloy carbon electrode extrusion molding nozzles in copper processing plants;
Fourth, the coal system:
1. Coal mine shaft equipment is equipped with zinc, aluminum and plastic corrosion-resistant coatings;
2. The middle slot and plunger of the coal scraper are made of alloy spray-welded wear-resistant coating;
V. Petroleum system:
1. The thickness of the thermal sprayed aluminum coating in the large steel oil tank of the refinery is 100-150μm, the thickness of the inorganic zinc-rich coating is 50-80μm, and the anti-corrosion period can reach more than 1 year;
2. The life of the oil pipe drill pipe joint is more than 1 times higher than that of the original 35Crmo drill pipe joint;
3. Various pump and plunger repairs;
4. Repair and strengthen various shafts and imported automobile crankshafts;
6. Chemical industry:
1. Metal coating: anti-corrosion coating of aluminum, zinc, tin, lead, stainless steel and other anti-corrosion coatings on the inner surface of carbonized tower, gas cabinet, brewing tank, beer fermenter, steaming tower, various chemical equipment, etc. ;
2. Ceramic coating: The surface of the new reactor of pharmaceutical, biochemical, food and chemical enterprises is sprayed with rust and rusted, and then sprayed with ceramic coatings such as Al2o3, Ar2o2 and Tio2 to replace the enamel glaze coating or the partial peeling repair coating of the reaction kettle;
3. Plastic coating: gym frame structure parts, public facilities, various chemical containers, large diameter pipes, ceramic industry mud machine frame, printing and dyeing industry guide roller, coal carbon belt conveyor, cast iron roller, printing machine Anti-corrosion coating of nylon coated on the surface of the guide roller, such as polyethylene, eva resin, chlorinated polyether, epoxy resin, etc., to make up for the shortage of electrostatic spray;
Seven, machinery industry:
1. Various imported automobile engine crankshafts, train diesel locomotive crankshafts, marine crankshafts, mine air compressor crankshafts, various large-scale motor rotor shafts, and Roots blower shaft repairs;
2, screw conveyor rod, all kinds of die-casting, injection molding, rubber mold, glass mold, cold punch, drawing, hot forging, hot extrusion, hot pressing, hot punching and other mold repair;
8. Paper, printing and packaging industries;
1. Anti-corrosion and wear-resistant coating such as stainless steel sprayed in paper drying cylinder;
2. The chest roller and the calender roll spray copper instead of the electroplated copper coating;
3. Four-color offset printing press impression roller crushing or wear repair;
4. Four pairs of corrugated cardboard presses in the carton factory;
Nine, the sugar industry:
1. Distribution of sugar factories in China, Guangxi, Guangxi, Hainan, Fujian, Yunnan, etc. There are l300, 1000, 2000 presses and combs of various types of presses, respectively.
X. Textile Industry:
1. Various textile machinery parts of chemical fiber, textile, printing and dyeing, cotton and wool, various types of double-twisting machine ingot rings, friction discs, various types of yarn guides, textile machine winding tanks, etc. Grinding coating
2. Repair of the crushing of the non-woven press roll;