Strict environmental protection is conducive to aluminum promotion

1. Huge aluminum processing capacity.
From 2006 to 2016, the accumulated investment in fixed assets of nonferrous metal alloy manufacturing and calendering industry exceeded 2201.4 billion yuan, with an average annual growth rate of 26.97%, of which the proportion of aluminum processing investment basically remained above 45%. A large amount of investment has led to the rapid growth of production capacity (at present, China’s aluminum extrusion production capacity accounts for 76% of the world’s total production capacity; the casting hot rolling production capacity accounts for about 59% of the world’s total production capacity; and the twin roll continuous casting and rolling strip production capacity accounts for about 67.5% of the world’s total production capacity). The export volume of aluminium sheet, aluminum foil and aluminum strip also ranks among the top in the world, with the largest number of world-class equipment.

At present, China has the world’s largest and full range of aluminum surface treatment production lines, the largest number of Sigmak heavy extruders, CVC cold rolling mills, the largest number of Ashenbach aluminum foil mills, and the largest number of hot and cold continuous rolling mills. However, how to make full use of these advanced equipment and play their due role will test the creativity, imagination and ability of industry personnel. Otherwise, it will add a heavy burden.

2. Homogeneous price competition is becoming increasingly fierce.
A lot of investment is focused on high-end aluminum strip and large extrusion products, resulting in structural overcapacity. The more high-end products, the more excess. As a result, product homogeneity competition and price war become increasingly fierce. This phenomenon is widespread from low-end products to high-end products. For example, in recent years, due to homogeneous competition, the processing cost of some products with high added value has become lower and lower. For example, the processing cost of CTP printed board base has dropped from 12000 yuan/ton to 3800 yuan/ton; The processing cost of aluminum alloy can materials has decreased from the original 20000 yuan/ton to less than 4000 yuan/ton; The processing cost of aluminum alloy profiles for high-speed railway carriages has decreased from 50000-70000 yuan/ton to 10000-15000 yuan/ton.

3. There is a good policy environment for the development of aluminum processing.
The Made in China 2025 issued in 2015 and the 13th Five Year Development Plan for Nonferrous Metals Industry to be released clearly propose to accelerate the development of high-performance light alloy materials. As the most important lightweight, energy-saving, renewable and environment-friendly material, aluminum alloy is the first choice in aviation, automobile, construction, electronics and packaging industries.

The General Office of the State Council recently released the Guiding Opinions on Creating a Good Market Environment, Promoting the Restructuring of the Non ferrous Metals Industry, Promoting Transformation and Increasing Benefits, which also clearly proposed to further increase the consumption of non-ferrous materials in aviation, automotive, construction, electronics, packaging and other fields, and focus on the development of aluminum alloy plates for passenger vehicles, aviation and marine use.

Therefore, with the deepening of supply side structural reform, the business environment for the development of China’s aluminum processing industry will be improved.

The Ministry of Industry and Information Technology said that while supporting the expansion of aluminum consumption in traditional areas, it would continue to implement major special projects such as technological transformation, foundation strengthening projects and new materials closely related to the aluminum processing industry, and would also increase targeted and continuous support for key areas such as aviation aluminum materials and car panels. The Ministry of Industry and Information Technology has also successively introduced some specific policies and measures to support the expansion of aluminum application in recent years. For example, at present, aluminum alloy semi trailers and tank cars can enjoy the policies of energy conservation and emission reduction in transportation, recommended models for highway drop and hook transportation, vehicle and vessel tax reduction and exemption. Aluminum alloy heat insulation profiles, color aluminum plates, aluminum alloy building templates, etc. are listed as green building materials.

How Henan Aluminum Industry to Advance Automobile Lightweight

How Henan Aluminum Industry to Advance Automobile Lightweight

Aluminum industry is a traditional competitive industry in Henan Province. After years of development, Henan aluminum industry has possessed the advantages of the whole industrial chain, and continues to extend to downstream aluminum processing and deep processing. The industrial structure has been continuously optimized. Henan is a truly large aluminum processing province. It is worth noting that the downstream consumption of aluminum processing materials has changed greatly in recent years, and Henan aluminum industry has both opportunities and challenges.

How Henan Aluminum Industry to Advance Automobile Lightweight

Two Challenges for Henan Aluminum Enterprises to Set foot in Automobile Lightweight

The research shows that for traditional fuel vehicles, about 60% of the vehicle fuel is used to load the self weight of the vehicle, and 0.39 liters of fuel can be saved for every 100 kg weight reduction of passenger vehicles and every 100 km. If the vehicle weight is reduced by 10%, the fuel consumption can be reduced by 6%~8%, thus reducing the emissions by 5%~6%. For new energy vehicles, the vehicle weight directly affects the driving range.

The above industry insiders said that the automobile materials are mainly steel, but the density of aluminum is only about 1/3 of steel, and the performance after alloying can meet the relevant requirements. Replacing steel with aluminum can significantly reduce the weight of automobiles. Aluminum alloy materials can replace steel in strength, heat conductivity, corrosion resistance and recycling.

Wanda ALU introduced that Henan’s aluminum sheet, strip and foil production ranks first in the country, aluminum profiles have made significant development, and wheel hubs have a place. From the perspective of the entire automobile structure, car bodies, wheels, parts, power batteries, etc. have demand for lightweight aluminum for automobiles, and the Association is increasing its research in this field.

However, it is not easy for Henan Aluminum Industry to get involved in automobile lightweight. It should not only face the certification process of automobile manufacturers, but also solve problems in technology and process.

The above industry insiders believe that aluminum alloy auto parts need to pass strict material certification, product certification, automobile production quality management system (IATF16949-2016) certification, and internal certification of vehicle manufacturers or first-class auto parts suppliers. There are few local brand auto manufacturers in Henan, which is the biggest dilemma for Henan aluminum industry to get involved in automobile lightweight.

In addition, the insiders said that in the field of automobile and other industrial aluminum profiles, downstream products with different needs and uses will have different requirements for aluminum profiles, especially in terms of alloy formula, manufacturing technology, process optimization, experience, etc., which requires long-term accumulation and trial.

Long-term cooperation between Yutong New Energy Vehicle and Wanda Aluminum

Yutong aluminium checker plate

It was learned from Zhengzhou Yutong Bus Co., Ltd. that the “2021 Annual Social Responsibility Report” released by the company shows that Yutong will achieve operating income of 25.7 billion yuan in 2021, an increase of 15.9%, and pay taxes of more than 1.3 billion yuan, achieving performance for 18 consecutive years. Continued growth.
According to the “Report”, in 2014 Yutong continued to lead the bus industry, with its bus sales exceeding 60,000 units, becoming the world’s largest bus sales company.

The aluminum alloy plate produced by Henan Wanda Aluminum has always been favored by Yutong Bus Company, especially the Aluminium checker plate, aluminum plate and other products, which have always been the most ideal materials in the new energy vehicle industry.

Yutong aluminium checker plate

The rapid growth of the new energy bus market has become an important factor driving the changes in Yutong’s business revenue. In 2021, Yutong Bus will sell a total of 7,405 new energy buses. Up to now, it has promoted a total of 13,798 new energy buses, becoming the first new energy bus in the world. A company with over 10,000 sales. It is equivalent to reducing carbon dioxide emissions by more than 464,000 tons per year, equivalent to the carbon dioxide absorption of 1,272 hectares of broad-leaved forest in one year. And Wanda Aluminum also wants Yutong Bus to provide a good product manufacturing plan.

In 2021, Yutong’s goal is to strive to achieve an operating income of 27.7 billion yuan, continue to maintain its advantages in passenger car sales, and focus on the new energy passenger car market. It is reported that in 2022, Yutong invested 3.86 billion yuan to build a new energy-saving and new energy bus industrialization base that has been officially put into production, with an annual production capacity of 30,000 vehicles, which will further reflect its economic benefits in 2015. The new energy bus technology is still in the early stage of development, and the speed of technological upgrading is very fast. Whether the new energy bus technology can make further breakthroughs will be the key problem to be solved by Yutong in the next stage.

Difference between aluminum alloy and aluminum profile

Difference between aluminum alloy and aluminum profile

Aluminum alloy is a kind of aluminum material, and it is also mixed with other metals, which is an alloy material. The aluminum profile is a product, which is made of aluminum alloy or pure aluminum, and can be directly used in the field of decoration. 2. The uses of the two are different, and the corrosion resistance, electrical conductivity and recyclability of aluminum profiles are more superior.

Difference between aluminum alloy and aluminum profile

In the building materials market, one is aluminum alloy, and the other is aluminum profile. Although there are many similarities between the two, there are still some differences. Today, Xiaobian will introduce aluminum alloy and aluminum for you. What is the difference between profiles.

The following article explains aluminum profiles in detail

Great prospects for the application of aluminum profiles

1. What are the differences between aluminum alloys and aluminum profiles?

The most direct difference is that the definitions of the two are different. Aluminum alloy is a kind of aluminum material, and it will also be mixed with other metals. It is an alloy material. The aluminum profile is actually a product, which is made of aluminum alloy or pure aluminum, and can be directly used in the field of decoration. The uses of the two are different, and the corrosion resistance, electrical conductivity and recyclability of aluminum profiles are more superior.

Difference between aluminium alloy and aluminum profile

2. What are the characteristics of aluminum profiles

①. Aluminum profiles made of pure aluminum have very good corrosion resistance, because the density of this material is 2.7 per cubic meter. If it is pure aluminum, it has very good corrosion resistance.
②. In addition, the conductivity of this material is also very good. Compared with other materials, the conductivity of aluminum is twice that of copper.
③. The thermal conductivity of aluminum profiles is also relatively prominent, so it can be made into a variety of utensils, such as cooking utensils, and our spatula can be made of aluminum alloys into an aluminum profile, including auto parts, etc. Etc., as well as radiators, are made of this material.
④. The processability of aluminum profiles is also very good, which can maintain the characteristics of the material.
⑤. Because this aluminum profile has a certain recyclability and can be reused, it is widely used in many aspects. It is also used in the furniture market and medical equipment, including some automated machinery and equipment.

3.The classification characteristics of aluminum alloys.

If it is divided according to its production process, it can be divided into deformed aluminum alloy or cast aluminum alloy. If it is a deformed aluminum alloy, there are also different products. For example, one is to prevent rust. Each has its own advantages and disadvantages, and the scope of application is also different.

Common products of aluminum profiles include: aluminium platealuminium coil, aluminium foil, aluminium strip, etc

Which aluminum alloy plate is suitable for ship plate?

5083 aluminum plate is a high magnesium alloy with good strength. such as 5086 Aluminium plate.

Corrosion resistance and machinability among non heat treatable alloys. The surface is beautiful after anodizing. The arc welding performance is good. The main alloy element in 5083 gold is magnesium, which has good corrosion resistance, weldability and medium strength.

5083 plate

The excellent corrosion resistance enables 5083 alloy to be widely used in marine applications such as ships, automobile, aircraft weldments, subway light rail, pressure vessels (such as liquid vehicle, refrigerated vehicle, refrigerated container), refrigeration devices, TV towers, drilling equipment, transportation equipment, missile parts, and armor that need strict fire protection.

It is widely used for maritime purposes, such as ships, automobile, aircraft weldments, subway light rail, pressure vessels that need strict fire prevention (such as liquid tank cars, cold trucks, refrigerated containers), refrigeration devices, television towers, drilling equipment, transportation equipment, missile parts, armor, etc

 

Basic characteristics of aviation aluminum alloy

The main characteristics of aluminum alloys for aerospace are: large-scale and integration, thin-walled and lightweight, precision of section size and geometric tolerance, uniformity and quality of microstructure and properties. According to different service conditions and parts of aircraft, aluminum alloys for aerospace are mainly high-strength aluminum alloy, heat-resistant aluminium alloy and corrosion-resistant aluminum alloy. High strength aluminum alloy is mainly used for aircraft fuselage components, engine compartment, seats, control systems, etc., and is the most widely used,For example, 5086 aluminum alloy.

characteristics of aviation aluminum alloy

The biggest characteristic of aviation aluminum alloy is that it can improve the strength by deformation heat treatment. Deformation heat treatment is a comprehensive process that combines the deformation strengthening of plastic deformation with the phase transformation strengthening during heat treatment to unify the forming process and formability. During the plastic deformation process of aviation aluminum alloy, the defect density inside the crystal increases, and these crystal defects will cause the change of the internal microstructure of the material. In the process of plastic deformation of aviation aluminum alloy, dynamic recovery, dynamic recrystallization, sub dynamic crystallization, static recrystallization, static recovery and other crystal structure changes will occur. These changes in crystal structure, if properly controlled, will significantly improve the mechanical properties of the material and enhance the service life of the material.

Aeronautical aluminum alloys are generally strengthened by precipitation of dispersed phase in supersaturated solid solution. The general precipitation sequence is: segregation region (or GP region) ~ transition phase (metastable phase) ~ equilibrium phase. In the process of deformation heat treatment, deformation induces precipitation, precipitation affects deformation, deformation and precipitation affect each other, and dynamically affect the properties of the material.

characteristics of aviation aluminium alloy

The precipitation strengthening process of deformation heat treatment is greatly affected by temperature. Deformation heat treatment can be divided into high temperature deformation heat treatment and low temperature deformation heat treatment. The basic processes of low temperature deformation heat treatment are: quenching of aviation aluminum alloy, cold deformation at room temperature and aging heat treatment. After this treatment, the strength of aviation aluminum alloy is greatly improved, but the plasticity is reduced. High temperature deformation heat treatment process: quenching, high temperature deformation and aging. After high temperature deformation heat treatment, the strength of the material is higher, the plasticity and toughness are improved, and the heat resistance strength of the alloy is also improved.

How to distinguish between aluminum alloy and titanium alloy?

1. if you have two materials with specific hardness, one is aluminum and the other is titanium alloy, as long as the two materials draw each other The scratched piece is aluminum Because titanium is harder than aluminum.
However, the hardness of 5XXX aluminum alloy is close to that of titanium alloy, and it is often used by military enterprises, such as 5005 aluminum alloy, 5754 aluminum alloy, 5083 aluminum alloy, etc

2. compared with acid resistance, aluminum reacts immediately with acid, and titanium has good acid resistance

aluminium alloy 22233445

3. measure the weight. Aluminum doors of the same size are the lightest, titanium doors are slightly heavier, and steel doors are the heaviest. But if the manufacturer deliberately deceives people, they can use aluminum and steel to make doors as heavy as titanium alloy. But it’s easy to tell if there’s steel in the door. Take a magnet and see if it can reach the door. Titanium alloys have no magnetism and do not attract magnets.

4. look at the color. Find an inconspicuous small corner and grind off a layer of oxide film or paint on the surface with sandpaper to completely expose the metal below. Then carefully observe the color of the metal. Take an empty coke can (aluminum), grind off the paint on the surface, and compare it with the door. Aluminum alloy is light gray, titanium alloy is dark gray, and looks more shiny than aluminum.

aluminium Alloy 5656665

5. if possible, you can also measure the resistance. The resistance of titanium alloy is much larger than that of aluminum alloy.

Aviation grade titanium magnesium aluminum alloy. High grade aluminum determines that youzhiya door and window has the characteristics of low density, high specific strength, good corrosion resistance and good process performance.

The chemical composition of 5083 aluminum alloy

Excellent corrosion resistance enables 5083 aluminum alloy to be widely used in marine applications such as ships, as well as heat exchangers, automobiles, aircraft welding parts, subway light rails, pressure vessels that require strict fire protection (such as liquid tankers, refrigerated vehicles, refrigerated containers), refrigeration Installations, TV towers, drilling equipment, transportation equipment, missile parts, armor, gas tanks, oil tankers, tool boxes, precisely because 5083 aluminum alloy has incomparable advantages of other alloys.

5083 belongs to the Al-Mg alloy, which is widely used, especially the construction industry cannot do without this alloy. It is the most promising Aluminium alloy Factory. Good corrosion resistance, excellent weldability, good cold workability, and moderate strength. The main alloying element of 5083 is magnesium, which has good formability, corrosion resistance, weldability, and medium strength. Hardware products, electrical enclosures, etc.

Chemical composition:

  • Aluminum Al : Allowance
  • Silicon Si: ≤0.40
  • Copper Cu: ≤0.10
  • Magnesium Mg: 4.0 to 4.9
  • Zinc Zn: ≤0.25
  • Manganese Mn: 0.40~1.0
  • Titanium Ti: ≤0.15
  • Chromium Cr: 0.05~0.25
  • Iron Fe: 0.000 to 0.400
  • Note: single: ≤0.05; total: ≤0.15
  • Density: 2.71g/cm3

 

How to distinguish the quality of aluminum alloy cables

Conductor, insulation and armored sheath are necessary for the composition of aluminum alloy cables. The quality of aluminum alloy cables mainly depends on the aluminum alloy conductor rods and cable insulation. Aluminum alloy cables have very good performance, corrosion resistance, and mechanical Performance, bending performance, flexibility, etc.
1. Aluminum alloy conductor rod
See if we can independently produce high-quality aluminum alloy conductor rods:
1. At present, there are not many manufacturers with independent aluminum alloy conductor production technology. They have aluminum alloy conductor rod production lines that can be continuously smelted, continuous casting, continuous casting and rolling. If they do not have independent aluminum alloy conductor rod production capacity, rely on Consignment processing, so-called secret smelting, or other aluminum alloy conductor rods purchased without a formal source not only cannot ensure the basic quality of aluminum alloy cables, but also cannot control the quality of the cables from the source.
2. In addition to the aluminum alloy conductor rod production line with smelting, continuous casting, continuous casting and rolling, it also depends on the size of the continuous casting billet section of its production line. The larger the section, the better the quality of the rolled aluminum alloy rod. Excellent, “good steel is made by hard work.” Excellent aluminum alloy conductor rods are the decisive factor for the electrical and mechanical properties of aluminum alloy cables. If you do not have high-quality aluminum alloy rods, no matter how drawing, stranding, cabling, armoring, etc., the subsequent processes cannot be changed The basic quality of its conductor.

2. Cable insulation
There are three things to look at with regard to insulation; cross-linking degree, stranded conductors, and conductor cable annealing:
1. Cross-linking degree: One of the advantages of aluminum alloy cables over copper cables is that all aluminum alloy cables are insulated with cross-linked polyethylene, and the operating temperature of the cable is 90 degrees. It is precisely because of the use of cross-linked polyethylene insulation that there is a problem of cross-linking degree. Regular professional aluminum alloy cable manufacturers should have a special cross-linking room.
2. Stranded conductor: Look at the conductor stranding technology and conductor stranding production line. At present, the stranded conductor equipment in the domestic cable industry is basically the same. The stranded conductor produced usually produces aluminum chips and burrs, which damage the insulation and affect the insulation. Effect, cause safety hazards and shorten insulation life. The advanced stranded conductor equipment is a sub-motor type, PLC program-controlled nano-technology conductor stranding equipment. Using this advanced process equipment, computer-controlled production programming, and innovative top-level nano-technology, the aluminum alloy conductors produced have no aluminum on the surface Chips, no burrs, no oil, no bumps, no scratches, no scratches, can effectively ensure that the cable insulation is free from any damage and destruction, and the service life of the product is much higher than that of similar products.
Third, the performance of aluminum alloy cables
1. Corrosion resistance: The corrosion resistance of pure aluminum is better than that of copper, but the corrosion resistance of aluminum alloy is better than that of pure aluminum, because the chemical elements such as rare earth added to aluminum alloy can increase the corrosion resistance of aluminum alloy, especially The performance of electrochemical corrosion resistance solves the long-term electrochemical corrosion problem of pure aluminum at the joint.
2. Mechanical properties: tensile strength and elongation. Compared with pure aluminum conductors, aluminum alloy conductors have added special ingredients and adopted special processing techniques to greatly improve the tensile strength, and the elongation rate is increased to 30%, making it safer and more reliable to use.
3. Bending performance: The bending performance of the aluminum core cable is very poor, and the bending is easy to break. The bending radius of the aluminum alloy power cable is 7 times the outer diameter of the cable, which is far better than the GB/T12706 “small bending when the cable is installed. 10 to 20 times the outer diameter of the cable specified in “Radius”.


4. Flexibility: As long as the pure aluminum cable is twisted at a certain angle for a few times, the conductor will crack or break, which is easy to cause accidents. The aluminum alloy power cable can withstand dozens of bends, eliminating the installation and use of pure aluminum cables in the past. The hidden dangers of accidents occurred during the process, which greatly improved the safety and reliability.
5. Aluminum alloy conductor is an emerging conductor material formed by adding rare earth, magnesium, copper, iron and other elements to pure aluminum through alloy technology. As we all know, after adding other alloying elements to aluminum, the electrical conductivity will decrease. However, through process control, the electrical conductivity can be restored to a level close to that of pure aluminum, making it have a current carrying capacity similar to that of pure aluminum.
6. Pure aluminum has poor creep resistance. The thermal expansion and contraction caused by power-on and power-off will cause a large amount of creep at the connection. After a long time, it will relax, and the contact resistance will increase and cause overheating, which is easy to cause accidents. The creep resistance of AA8000 series aluminum alloy is 300 of that of pure aluminum conductor, which greatly reduces the possibility of cable joint slack and improves the connection of conductors.