Kemet Share | Analysis of domestic aluminum profile powder coating market prospects


Release time:

2021-07-20

According to the relevant statistics of the National Bureau of Statistics and the China Nonferrous Metals Industry Association, in 2020, China's aluminum extrusions will be powder coated with 11 million t, accounting for 69.8 of the surface-treated aluminum extrusions (15.75 million t). Compared with 2019, the production of aluminum extrusions with powder coating increased by 700000 t, accounting for an increase of 0.9. In 2020, the domestic output of building aluminum profiles will be 13.9 million t, up 5.7 percent. Industrial aluminum profiles 6.12 million t, up 8.7 percent, of which photovoltaic profiles increased significantly, reaching 42%, with annual output reaching 1.42 million t and building formwork profiles reaching 1.15 million t. According to the calculation of 40-50kg of powder for spraying per ton of aluminum, the consumption of powder coating for aluminum extrusion materials in 2020 is 44000-550000t, which is the largest application field of powder coating. In the future, with the increase of application of aluminum materials in more fields, especially industrial aluminum profiles, the growth of powder coating for the main surface treatment methods of aluminum materials will be driven.

According to the relevant statistics of the National Bureau of Statistics and the China Nonferrous Metals Industry Association, in 2020, China's aluminum extrusions will be powder coated with 11 million t, accounting for 69.8 of the surface-treated aluminum extrusions (15.75 million t). Compared with 2019, the production of aluminum extrusions with powder coating increased by 700000 t, accounting for an increase of 0.9. In 2020, the domestic output of building aluminum profiles will be 13.9 million t, up 5.7 percent. Industrial aluminum profiles 6.12 million t, up 8.7 percent, of which photovoltaic profiles increased significantly, reaching 42%, with annual output reaching 1.42 million t and building formwork profiles reaching 1.15 million t. According to the calculation of 40-50kg of powder for spraying per ton of aluminum, the consumption of powder coating -550000t for aluminum extrusion materials in 2020 is the largest application field of powder coating. In the future, with the increase of application of aluminum materials in more fields, especially industrial aluminum profiles, the growth of powder coating for the main surface treatment methods of aluminum materials will surely be driven.

The downstream industries of the main applications of aluminum profiles in my country include new energy photovoltaics, rail transit, automotive lightweight, medical and environmental protection, electronic appliances, and construction fields. With the improvement of the technology of domestic aluminum profile manufacturing enterprises, the performance of aluminum profiles has been greatly improved. The breadth and depth of application fields are gradually expanded, and the development prospects are good. At the same time, the application of different fields also puts forward different performance requirements for powder coatings.

Application in the field of 1. construction

The construction industry is one of the most widely used fields of aluminum profiles. Due to the light weight of aluminum and aluminum alloys, the specific strength (the ratio of material strength to specific gravity) can reach or exceed structural steel, and it is easy to process into various shapes. Aluminum materials are widely used in industrial and civil buildings. The "Non-ferrous Metals Industry Development Plan (2016-2020)" promulgated by the National Development and Reform Commission in 2016 clearly encourages the expansion of the application of aluminum in the construction industry. In addition to the ubiquitous roofs, walls, doors and windows, skeletons, decorative panels, ceilings, suspended ceilings, railings, indoor furniture, store containers, etc., aluminum alloy building templates, aluminum alloy overpasses, aluminum enclosure panels, and foam aluminum Anti-seismic houses, aluminum structure movable board houses and other applications have also been rapidly developed and promoted. In addition, the demand for new architectural aluminum products such as colored aluminum plates, composite aluminum plates, composite door and window frames, and aluminum alloy templates is also increasing year by year.

Applications 2. Consumer Electronics

In recent years, with the rapid development of consumer electronics, the demand for aluminum profiles in the electronics industry has grown rapidly, mainly in the internal structural parts, middle frames, shells and brackets of notebook computers, mobile phones and tablet computers. Driven by the trend of thinness and fashion, the penetration rate of consumer electronic metal appearance parts and internal components has gradually increased. For example, Apple's Mac, iPhone and iPad products are mainly made of aluminum alloy, while products of brands such as Samsung, Huawei and Asus are increasingly equipped with aluminum alloy shells. As the world's largest electronic product production base, my country produces hundreds of millions of computers and smart phones every year. In the past three years, the national average annual PC shipments were 457.6667 million, and the national average annual smartphone shipments were 349.0437 million. The demand for aluminum in this field has become more stable with the deepening of aluminum alloy applications.

Application in 3. Photovoltaic Field

Solar energy is a renewable and pollution-free new energy. Extruded aluminum is the most competitive optional material for manufacturing solar photovoltaic modules. Panel frame pillars, support rods, Tie rods, etc. can be made of aluminum alloy, which is a new market for aluminum profile applications. The main products of aluminum profiles in the photovoltaic field are solar photovoltaic frames and solar photovoltaic brackets. The solar photovoltaic frame and bracket mainly play a role in fixing and sealing the solar cell module, enhancing the strength of the module, facilitating transportation and installation, and its performance will affect the life of the solar cell module. According to the use of raw materials, solar frame can be divided into three categories: aluminum profile frame, stainless steel frame, glass steel profile frame, because aluminum profile has light weight, strong corrosion resistance, easy forming, high strength, easy cutting and processing, recyclable, etc., is currently the most common application in solar frame.

Solar photovoltaic is one of the seven emerging industries that the country focuses on. The rapid development of my country's photovoltaic power generation field will drive the rapid growth of the demand for aluminum profiles in solar photovoltaic modules. China is the country with the largest installed capacity of photovoltaic power generation in the world, with 30.11 million kilowatts of new photovoltaic power generation installed in the country by 2019, down 31.6 percent from the same period last year, of which 17.91 million kilowatts were installed in centralized photovoltaics, down 22.9 percent from the same period last year, and 12.2 million kilowatts were installed in distributed photovoltaics, up 41.3 percent from the same period last year. The cumulative installed capacity of photovoltaic power generation reached 204.3 million kilowatts, a year-on-year increase of 17.3 percent, of which centralized photovoltaic 141.67 million kilowatts, a year-on-year increase of 14.5 percent; distributed photovoltaic 62.63 million kilowatts, a year-on-year increase of 24.2 percent.

4. applications in the field of rail transit

aluminum profile has outstanding advantages such as high strength and toughness, light weight, easy processing, and good corrosion resistance, making it widely used in the field of rail transit. In recent years, with the development and promotion of rail transit technology, the application of aluminum profiles in my country's transportation field has continued to increase. Rail vehicle bodies have been manufactured using a large number of aluminum materials. At present, high-speed rail and EMU connectors, seats, doors and windows, and luggage racks, Advertising racks, car bodies, etc. also use a large number of aluminum alloy products.

In the field of high-speed rail, trains with a running speed of more than 250 km/h must use aluminum alloy car bodies. Trains with a running speed of more than 350 km/h all use aluminum profiles except the chassis. At present, the domestic Harmony EMU is made of stainless steel except CRH1, and CRH2, CRH3 and CRH5 are all large hollow aluminum alloy car bodies.

In the fields of subway, light rail, urban express rail, etc., aluminum profiles can be mainly used in car bodies (roof, side walls, end walls, floor), accessories (including air conditioning parts, water tanks, structural panels, instrument racks, Air diffusers, train doors, up and down pedals, etc.), decorative parts (seat frames and parts, luggage racks, ventilation grilles, etc.), etc.

Application in 5. Automobile

Traditional Automobile Lightweight

Aluminum was first used in the field of automobile material manufacturing. As early as 1899, European automobile enterprises adopted aluminum casting transmission housings. With the passage of time, the range of aluminum used in automobiles has become wider and wider. At present, the aluminum alloy utilization rate of the transmission case and heat exchange system is close to 100 percent, and the engine block, cylinder head and wheels have also reached a high level. The future focus on expanding the body, chassis and other components, the scope of application is expected to increase significantly. Lightweight is to reduce the weight of the vehicle as much as possible under the premise of ensuring the strength and safety of the vehicle, thereby improving the power of the vehicle, reducing fuel consumption, and reducing exhaust pollution. With the advancement of technology, the application of aluminum alloys in wheels, engines, radiators, and oil pipes will gradually deepen.

New Energy Vehicle

With the introduction of finishing technology for aluminum profiles and aluminum parts, aluminum alloy parts for new energy vehicles have gradually expanded to body, wheels, chassis, bumper anti-collision beams, floors, electric batteries, energy absorbing boxes, pedals, skylight slide rails, ceiling luggage supports and seats. At the same time, compared with ordinary gasoline vehicles, new energy vehicles have lower carbon emissions and higher cleanliness and environmental protection.