2xxx Aluminum Alloy: 2024 T3Aluminum

Aluminum alloys are mainly used as structural materials in aircraft, such as skins, frames, propellers, fuel tanks, wall panels and landing gear struts. The aluminum alloys used for large aircraft structures in the world today are mainly high-strength 2xxx aluminum alloy series (2024, 2224, 2324, 2424, 2524, etc.) and ultra-high-strength 7xxx series (7075, 7475, 7050, 7150, 7055, 7085, etc.), respectively accounting for 38% and 45% of the aluminum materials used in civil airplanes.

2xxx aluminum alloys have high tensile strength, toughness and fatigue strength, good heat resistance, processing and welding properties, and are widely used in aerospace, automobile and weapon industries. The main grades are 2A01, 2A02, 2A06, 2A11, 2A12, etc. A series of alloys, such as 2024, 2124, 2524, and 2324 alloys, have been developed to improve strength, strength-toughness matching, and damage tolerance performance.

Among the 2xxx aluminum alloys, 2024 aluminum alloy invented in 1939 is a more commonly used one. The 2024 alloy brought great changes to the structure and performance of the aircraft, and also laid the foundation for the development of the 2xxx aluminum alloys.

2024 aluminum alloys are commonly used in T3 and T4 tempers, which which have high plasticity, fatigue life, fracture toughness and fatigue crack growth resistance, but poor corrosion resistance. This aluminum thick plate is mainly used in fuselage, wing, shear ribs and webs, and other structural parts that require high strength. Artificial aging can be used to improve the corrosion resistance, heat resistance and yield strength of 2024 alloy, but the plasticity and fatigue fracture resistance will be reduced, and the fatigue crack growth rate will also be accelerated.

2A12 aluminum is a high-strength duralumin, It has higher Mn and its Mg content is increased to 1.5%. The high temperature strength of this duralumin is higher than that of standard duralumin and super duralumin. 2A12-T4 alloy aluminum plate has high strength and qualified plasticity. It is the most widely used duralumin in the aviation industry.

2014 aluminum is an Al-Cu-Mg-Si series high-strength wrought aluminum alloy, which can be strengthened by heat treatment. The chemical composition of this alloy is similar to that of 2A14 aluminum alloy, it has high strength and good hot workability, and is easy to forge. The performance is basically the same as 2A14. Due to the high copper content of the alloy, its corrosion resistance is poor, and it is prone to intergranular corrosion and stress corrosion. Its weldability is still good, and its cutting performance is good. Welcome to contact Haomei Aluminum directly, one of the big 2024 t3 aluminum suppliers in China.

Original site: https://www.aircraft-aluminium-sheet.com/a/2xxx-aluminum-alloy-2024-t3aluminum.html

Aluminum Sheet for Car Body

At present, 5, 6, and 7 series aluminum sheets are mostly used on the car body. Among them, the 5 series aluminum sheet is not suitable for the exterior parts of the car due to the deformation problem, so the outer panels of the doors, engine covers, and side panels generally choose 6 series aluminum sheet.

The involved alloy grades are 6016, 6022, 6111, 6181, 5754, 5052 and alloy 5182. Among them, the inner panels of the body basically use 5182 alloy and 6181A alloy, while the outer panels of the body mainly use 6016, 6111 and 6022 alloys. The size of the automotive aluminum sheet is mainly concentrated in the thickness of 0.7-3mm and the width of 900-2130mm.

Compared with other grades, 5××× aluminum alloys have the advantages of low density, high specific strength, good formability and welding performance. When applied to automobile panels, the formability of 5000 series aluminum alloys is better than that of other series of aluminum alloys.

For car doors, car hoods, front and rear fenders and other parts, the mature products we have developed are 5182 aluminum sheet. Haomei Aluminum’s 5182 aluminum sheet has a good stamping effect. The customer’s feedback is that there is no crack phenomenon after the aluminum plate is stamped. Currently the thickness range that Haomei can produce is 0.15-600mm, and the width range is 20-2600mm (cut according to customer needs).

AA6016 alloy with low Cu content is commonly used in Europe, and AA6111 alloy with high Cu content is commonly used in North America. At present, these two alloys have the problem of poor formability and are not suitable for inner panel materials with high formability requirements.

The 6022 alloy contains lower alloy elements and has better formability and corrosion resistance than AA6016 and AA6111 alloys. It is considered that it can be used as both an outer panel material and an inner panel material.

6016 aluminum alloy has the advantages of good fracture toughness, corrosion resistance, fatigue resistance, etc., and can be used to manufacture doors, windows, and invisible parts in the body structure.

The heat treatment process is complicated, and pre-aging treatment T4P must be carried out between solution treatment and paint baking treatment to obtain good performance. Because it has good formability before stamping, and can quickly increase the strength during the baking process after stamping, so it has high dent resistance.

Original source: https://www.aluminium-auto-sheet.com/a/aluminum-sheet-for-car-body.html

5083 Cast Aluminum Plate for LNG Tank

There are many types and shapes of tank trucks. Some tanks have very large volumes, such as 28,000L storage tanks on LNG ships. Under certain conditions, the weight of the tank body becomes the decisive factor affecting the quality of the tank car. For this reason, as long as aluminum and aluminum alloys have no effect on the quality of the transported materials, they must be welded with aluminum or aluminum alloy plates to reduce the weight of the vehicles achieve the goals of energy saving, emission reduction and environmental protection.

LNG carrier refers to a special ship that transports LNG (Liquefied natural gas) from the liquefaction plant to the receiving terminal. The main component of liquefied natural gas is methane. For the convenience of transportation, it is usually liquefied by freezing at very low temperature (-165°C) under normal pressure. The critical temperature for liquefaction of natural gas is -164°C at one atmospheric pressure. At such a low temperature, general marine carbon steel is brittle, so the liquid cargo tanks of LNG ships can only be made of expensive nickel alloy steel or Al alloy 5083.

The 5000 series aluminum alloys have good corrosion resistance and weldability. The tank body made of aluminum alloy can transport various liquids or liquefied gas without any protective coating inside, and because there is no corrosion, the oil quality is guaranteed.

The recycling value of the tank body is also higher after it is forced to be scrapped. At the same time, because the aluminum alloy has good electrical conductivity, it rarely accumulates static electricity on the tank body, so it will not generate sparks and cause an explosion. The momentary power produced by the collision will not cause the tank to crack and cause leakage.

The biggest difference between aluminum and steel in terms of the relationship between performance and temperature is that steel has low temperature brittleness, while aluminum and aluminum alloys do not. Therefore, aluminum alloy has become a good material for manufacturing cryogenic equipment and facilities. The tank trucks transporting liquefied natural gas and the large tanks for storing liquefied natural gas can be welded with aluminum alloy 5083 cast aluminum plate with O temper.

The reason why 5083 aluminum plate can be used for this application because it has the following features: 5083 belongs to the Al-Mg alloy and has good corrosion resistance, excellent weldability, good cold workability, and medium strength.

The 5083 cast aluminum plate for LNG storage tanks is a high-quality material for manufacturing liquefied natural gas storage tanks. Not only does it have ultra-low temperature structural materials, but it is also easy to process and form, and has good weldability and high recovery rate.

Original source: https://www.aluminium-tanker-plate.com/a/5083-cast-aluminum-plate-for-lng-tank.html

1070 Aluminum Flat Strip

Aluminum Strip Series

Haomei aluminum strips covers 1000, 2000, 3000, 5000, 6000 and 7000 series. The main alloy grades are 1050, 1060, 1070, 1100, 2024, 3003, 3004, 5005, 5052, 5056, 5083, 6061, 6063,7075,etc. The common tempers are O and H tempers. As for surface treatment, there are two types: mill polish and color coated.

1070 Aluminum Strip Properties

1070 aluminum strip has some features such as high plasticity, anti-corrosion, electrical conductivity and good thermal conductivity, but low strength. And the machinability is not good without heat treatment. It can be used for gas welding, argon arc welding and spot welding.

1070 aluminum is used for processing parts that require good formability and high corrosion resistance but do not require high strength, such as chemical products, food industry devices and storage containers, thin plate processing parts, deep drawing or spinning cookware, heat exchangers, printed boards, nameplates, reflectors, transformers, fin radiators, window spacer,etc.

1070 Aluminum Specification

Alloy	Temper	Thickness(mm)	Tensile strength(Mpa)	Elongation(%)
1070	O	>0.2-0.3	55-95	≥15
		>0.3-0.5		≥20
		>0.5-0.8		≥25
		>0.8-1.3		≥30
		>1.3-4.5		≥35
	H22	>0.2-0.5	100-125	≥12
		>0.5-1.0		≥15
		>1.0-4.5		≥18
	H24	>0.2-0.5	120-150	≥6
		>0.5-1.0		≥8
		>1.0-4.5		≥10
	H26	>0.2-0.5	140-170	≥2
		>0.5-1.0		≥4
		>1.0-4.5		≥6
	H18	>0.2-0.5	≥170	≥2
		>0.5-1.0		≥3
		>1.0-5.5		≥4

Top Applications

Cookware：Because of its low density, light weight, smooth surface, good extensibility and excellent electrical and thermal conductivity, it is mainly used in various kitchen utensils, cooking utensils and containers like non-stick pans, pressure cookers, pots,etc.

Transformer: Dry-type transformer aluminum strip is a special-purpose aluminum stripproduced for transformers. It uses high-purity aluminum substrates with an aluminum content of more than 99.60% and is an aluminum deep-processing product formed by slitting and processing aluminum coils. The thickness tolerance of our 1070 aluminum strip can be controlled within 0.02mm.

Fin Stock: 1070 aluminum strips are mainly used for fin radiator. Because aluminum strips have good electrical conductivity, only second to copper, it is used instead of copper strips as finned radiators in the world. As a common material for finned radiators, it achieves the purpose of enhancing heat transfer by adding fins to ordinary base tubes.

Chemical Equipment: 1070 has excellent forming processing characteristics, high corrosion resistance, good weldability and conductivity, so it is widely used or chemical equipment.

Window spacer: Aluminum strip for window spacer is to support two or more pieces of glass, so that a dry gas space is formed between the glass layers. It is is a new type of building material that is excellent in heat insulation, sound insulation and beautiful appearance. After the surface is treated, it will not oxidize, corrode, and have no effect on the desiccant, effectively eliminating the phenomenon of atomization.

Packaging and Delivery of Aluminum Flat Strip

Haomei 1070 Aluminum strip products meet the export standard. Plastic film and brown paper can be covered at customers’ need. What’s more, wooden case or wooden pallet is adopted to protect products from damage during the delivery. There are two kinds of packaging, which is eye to wall or eye to sky. Customers can choose either of them for their convenience. Generally speaking, there are 2 tons in one package, and loading 18-22 tons in 1×20′ container, and 20-24 tons in 1×40′ container.

Processing Technology

The main processing equipment of the aluminum strip is the slitting unit, which can be divided into the required length and width according to the needs. Usually the aluminum strip for sale is cut according to the actual width of the user, which can reduce waste and processing procedures (no cutting), and save raw material costs.

The raw material of pure aluminum strip is pure aluminum or aluminum alloy cast-rolled aluminum coil, hot-rolled aluminum coil, which is rolled into thin aluminum coils of different thickness and width by cold rolling mill. Haomei Aluminum has a number of aluminum strip slitting production lines, which can slit aluminum strips according to the width required by users.

For products with high surface requirements, film can be applied during the cutting process to avoid scratches. The cutting accuracy of the aluminum strip can be controlled within 0.05mm, and the inner diameter and outer diameter can be processed according to user requirements.

Original source: https://www.aluminumstrip24.com/products/1070-environmental-protection-aluminum-strip.html

What Are 2024T3 and 7075T6 Properties

2024 aluminum is an Al-Cu-Mg aluminum alloy with a density of 2.73 g/cm, which can be strengthened by heat treatment, and has moderate plasticity in the quenched and just quenched states. It has poor corrosion resistance, but it can be effectively protected by covering it with pure aluminum; it is prone to cracks during welding, but it can be welded or riveted by special processes.

The common tempers of 2024 aircraft aluminum alloy is T3, T4, T351 and T851. What are aluminium 2024 t3 properties? It has an ultimate strength of 62000 PSI and a shear strength of 40000 PSI. 2024 plate has an ultimate tensile strength of 400–430 MPa (58–62 ksi) and a yield strength of at least 270–280 MPa (39–40 ksi). It has an elongation of 10-15%.

2024 t3 aluminum sheet is considered an aircraft alloy due to its strength and also has excellent fatigue resistance. Soldering is generally not recommended. Typical uses for 2024-T3 aluminum sheet are fuselage and wing skins, roofs and aircraft structures.

7075 aluminum sheet is a cold-processed forging alloy with high strength, far superior to mild steel. Zinc is the main alloying element in 7075. Adding magnesium to an alloy containing 3%-7.5% zinc can form MgZn2 with a significant strengthening effect, making the heat treatment effect of the alloy far better than that of aluminum-zinc binary alloys. It is especially suitable for manufacturing aircraft structures and other high-stress structures that require high strength and corrosion resistance.

7075 aluminum has O, T6, T651 and T7 tempers. What are Al 7075 t6 properties? 7075 t6 has an ultimate tensile strength of 510–540 MPa (74,000–78,000 psi) and a yield strength of at least 430–480 MPa (63,000–69,000 psi). It has an elongation at failure of 5-11%.

7075 T6 is typically achieved by homogenizing casting 7075 at 450°C for several hours, quenching and then aging at 120°C for 24 hours. This produces the peak strength of the 7075 alloy. The strength comes mainly from finely dispersed eta and eta’ precipitates within the grains and along the grain boundaries.

Original Source:https://www.aircraftaluminium.com/a/what-are-2024t3-and-7075t6-properties.html

What Are Uses of Oversized Aluminum Sheet

Shipbuilding industry

The main requirements for shipbuilding are certain tensile strength, yield strength, elongation and impact resistance, as well as corrosion resistance to marine humid air environments. The application of the oversized aluminum sheet can properly solve these problems. The uses of 5052 aluminum plate in shipbuilding can reduce the weight of the ship, improve the corrosion resistance of the ship, and increase the operating speed of the ship. The thickness of the plates used is determined by the hull structure, ship specifications, and used parts.

To realize lightweight, thin aluminum plates should be used as much as possible for a ship, but the depth of corrosion of the plates within the service time should also be considered. To In order to reduce the welding seam, the oversize aluminum sheet with a width of 2.0 m are often used. For some large ships, the width is 2.5m. The length is 6m.

Aerospace industry

7000 and 2000 series aluminum sheets are widely used for orrosion resistance and fracture toughness. For example, it is used for aircraft fuselage, wing, spar, wing rib and other related structural parts. In some aircraft parts, the proportion of thick aluminum alloy plate or aluminum alloy material is as high as 78%, and the large aluminum sheet parts can reach more than 6m, and the thickness of some thick alloy aluminum plates is about 220mm. In the future, thick aluminum alloy plates will be more and more widely used in the aerospace industry.

Railway transportation and road transportation

Aluminum alloy plates are widely used in the manufacture of railway transportation and road transportation vehicles. With the development of my country’s high-speed railway and bullet train technology, the performance requirements for thick aluminum alloy plates are getting higher and higher. Among them, thick aluminum alloy plate 5083 and 5182 are used in railway coal transportation vehicles.

The chosen aluminum sheet thickness is mostly between 8 and 16mm, the tensile strength is higher than 550MPa, and the largest plate size can reach 21000×2680mm, which meets the strict requirements of trucks on material properties.

Other industries

In the storage and transportation of chemicals and dangerous goods, the application of thick aluminum alloy plates has good benefits. In the manufacture of tank trucks, thick aluminum alloy plates are used to store nitric acid and other substances, which can reduce its own weight and greatly improve the safety protection performance. In addition, in the oil and gas industry, thick alloy aluminum plates are used to manufacture equipment accessories for vehicles and drilling technology with individual functions. Welcome to leave message to inquire those oversized 5052 and alumium 5083 price.

Original Source:https://www.marinealu.com/a/what-are-uses-of-oversized-aluminum-sheet.html

Annealing Process of 5454 Aluminum Alloy for Tanker Truck

5xxx Al-Mg alloys are deformed aluminum alloys mainly composed of Mg elements, among which 5454 aluminum alloy is one of the typical grades. 5454 aluminum alloy has many advantages such as medium strength, good welding performance, excellent processing and forming performance and good corrosion resistance.

It has been widely used in the fields of automobile manufacturing, canning industry, electronic communication and light industrial building materials, and it is also one of the potential main materials for structural parts of seawater desalination devices in future marine engineering. What is its annealing process?

With the increase of annealing temperature, the yield strength and tensile strength of 5454 aluminum alloy gradually decrease, and the elongation gradually increases, but when the annealing temperature is ≤90 ℃, there is only a slight change.

When the annealing temperature rises to 120-150 ℃, the yield strength decreases greatly, the change in tensile strength is small, and the elongation increases to 13% at 150 ℃. When the annealing temperature rises to 180-240℃, the properties change slowly.

When the annealing temperature reaches 270 ℃, the yield strength decreases greatly and the elongation increases greatly, but the change in tensile strength is small; at 300 ℃, the yield strength and tensile strength sharply decreased, the elongation increased sharply, and the performance reached the required value of the 5454-O state standard (Rp0.2≥85 MPa, Rm is 215-285 MPa, A≥17%).

At 330 ℃,the yield strength and tensile strength decreased slightly, and the elongation increased slightly; at 360-570 °C, the properties changed slowly, but when the annealing temperature reached 600 °C, the yield and tensile strength decreased slightly , while the elongation rapidly decreases to 15.5%.

When the annealing temperature is less than or equal to 90 °C, the properties change little, and the grain size does not change significantly, indicating that this temperature range does not have much influence on the properties of the 5454 aluminium.

In the range of 120-270 ℃, with the increase of annealing temperature, a large number of dislocations formed in the cold rolling process can move or disappear, part of the internal stress is released, so that the yield strength and elongation have a large change. However, the tensile strength and grain structure of 5454 aluminum change little, and slight recovery and recrystallization occur.

At 270-300 ℃, the internal structure of the alloy begins to nucleate and grow, the fibrous structure basically disappears, the small-angle grain boundaries are swallowed, the grains recrystallize, and the performance meets the O state standard requirements.

At 330℃, the strength is further reduced, the elongation is further increased, and recrystallization is basically completed; at 360-570 °C, the performance changes little, the grain grows slightly, and the residual small-angle grain boundaries are completely swallowed; at 600 ℃, the performance is abnormal, the crystal grains are re-spheroidized to form equiaxed crystals, and remelted balls are formed in some areas, and overburning occurs.

Original Source:https://www.aluminumtankerplate.com/a/annealing-process-of-5454-aluminum-alloy-for-tanker-truck.html

Why Is Aluminum Foil Packaging So Popular?

In recent years, aluminum foil packaging is more and more popular due to its series of excellent properties. It has a low density, only 1/3 of steel, excellent processability and is easy to punch into various complex shapes. It has strong corrosion resistance and will not rust. It has excellent barrier properties, light-shielding properties, and fragrance retention, which can effectively protect product. It is easy to print and has good printing effect. The common alloys are 8011, 8021 and 8079 aluminum foil roll.

Aluminum packaging materials mainly include pure aluminum plate, alloy aluminum plate and aluminum foil. Aluminum alloy plate is processed by adding a small amount of magnesium, manganese and copper to aluminum. Aluminum alloys commonly used in packaging include aluminum-magnesium alloys and aluminum-manganese alloys, also known as anti-rust aluminum alloys.

The aluminum alloy sheets are mostly used to make canned containers. When used for canned fish and meat, they will not be vulcanized and blackened like tinned cans; they are more used for packaging beverages, which will not make the beverages muddy and flavor changes.

Aluminum foil is made of pure aluminum with a purity of more than 99.5% by rolling, and the thickness is between 0.005 and 0.2mm. It is light and shiny, has strong reflective ability, and can be used as heat-proof and insulating packaging. The biggest disadvantage of aluminum foil is that it is not resistant to acid and strong alkali and has low tear resistance.

Aluminum foil can be used to package items alone; more often it is made of composite materials with paper, plastic film, etc., used for packaging of food, cigarettes, cosmetics, medicines, chemicals, etc.

The exporting packaging of aluminum foils should be based on the specifications and dimensions of the product. The making material of packing box can be materials such as wood board, plywood, fibreboard, metal. The packing box should be clean and tidy, and have enough strength to ensure that it will not be deformed or damaged during storage and transportation of aluminum foil like 8021 aluminum foil.

The nails in the wooden packing box are arranged step by step, and the nail tips should not be exposed. The height of the bottom bracket should meet the requirements of forklift transportation. After the aluminum foil product has passed the inspection and is covered with inspection stamps, it should be wrapped with a layer of strong neutral or weakly acidic material, and the joints should be sealed with tape or labels. We also should pay attention to the protection of end face and the moisture-proof problem.

Original source: Original Source: https://www.alumfoils.com/a/why-is-aluminum-foil-packaging-so-popular.html

What are Popular Uses of Stucco Embossed Aluminum Plates for Sale

The high hardness and strong corrosion resistance of the stucco embossed aluminium make it have excellent performance in humid environment. In recent years, it has become the first choice material for making refrigerator freezer liner. The choice of aluminum plate as the material of the refrigerator liner can reduce the cost as much as possible under the premise of ensuring its good thermal conductivity. In addition, the aluminum alloy has strong corrosion resistance and is the best choice for the refrigerator liner.

The aluminum embossed sheet is the main structural form of modern industrial buildings. The design of this structure is widely used in different buildings. Because of its exquisite design, simple structure and high strength, it has also been applied to earthquake-prone areas. The design of this structure of embossed aluminum plate mainly has three characteristics, namely load bearing, heat preservation and sound insulation.

The deck is often subject to trampling friction and rolling wear, and is easily polluted by various oily, acidic and alkaline media, and needs to be scrubbed frequently. Therefore, it is required the ship deck with good slip resistance, wear resistance, and corrosion resistance. 6061 aluminum tread plate is a common choice.

The aluminum checker plate is often used as anti-skid plates on the bottom of cars, especially buses. When the driver encounters an emergency while driving and applies sudden brakes, or when the car is going uphill or downhill, the aluminum diamond plate can prevent passengers from falling forward or falling due to inertia, ensuring the safety of passengers.

There are many specifications of aluminum plates for sale. It has many patterns: one bar, three bar, five bar and diamond. The prices of different thicknesses will also vary. Haomei embossed aluminum plate has a novel structure and good anti-skid effect. It mass per square meter is about 7kg, and its tensile strength reaches 200N per square millimeter. The aluminum plate has high elongation, and the relative elongation is higher than 10%. It can withstand high bending without breaking, and has good toughness.

Original source: https://www.hm-alu.com/a/what-are-popular-uses-of-stucco-embossed-aluminum-plates-for-sale.html

What Is Offset Printing Plate Thickness

The common offset printing plate thickness is 0.14 (0.15) , 0.27 (0.30)mm and 0.23(0.25)mm. 0.40 mm is a unconventional thickness. The aluminum substrate thickness is 0.13-0.3 mm. Aluminum sheet is the core basic material of PS/CTP plates. Commonly used alloy grades are 1050, 1052, 1060 and 1070, and the mass fractions of aluminum are ≥99.50%, ≥99.52%, ≥99.60%, ≥99.70%

Since offset plates has high requirements on the surface quality of aluminum sheets, the aluminum sheet production process is very special. There are three types of blank supply methods for aluminum sheet substrate.

1. The continuous cast-rolling method is to feed the molten and purified aluminum liquid into the “roll gap” formed between two rotating rolls, and through the forced cooling, crystallization and deformation of the two rolls, aluminum blanks with a thickness of 6-8 mm is obtained.

During the casting and rolling process, the molten aluminum is crystallized by the rapid cooling of the rolls in the narrow gap between the two rolls, and the solidified billet is rolled and deformed to a certain extent by the rolls at the same time, and the internal structure of the obtained cast-rolled sheet belongs to semi-cast structure, featuring strong crystal structure.

2. Continue casting direct Rolling is to inject the molten aluminum melt through the launder and nozzle into the synchronously running upper and lower steel belts or caterpillars and side stoppers after heat preservation and quenching and tempering treatment.

The 19 mm thick strip billet is continuously cast, and then coiled into coils after on-line hot rolling (or hot rolling). The liquid aluminum is crystallized in the twin-belt casting machine, and the cooling rate of the continuous casting machine is as high as 50-70 ℃/ s, which makes it easier to obtain a smaller grain size, the crystal structure of the billet is dense and fine, the dendrite spacing is small, and the solid solubility of alloying elements is large, which improves the structure and performance of the product to a certain extent.

3. The ingot hot rolling method is to cast the molten aluminum into a slab after refining and purification, and then pass through the milling machine to remove the oxidation inclusions on the surface of the slab. It is then heated and rolled to a few millimeters thick hot-rolled coil at a temperature higher than the recrystallization temperature.

Due to the large volume of the hot-rolled slab, the internal structure has undergone multiple recovery and recrystallization during the plastic deformation process, which significantly improves internal organization and reduces finished product defects.

Although the products produced by the continuous cast-rolling method have problems such as poor internal quality, surface segregation, difficult production, and unstable quality, it has the advantages of less investment, high efficiency, and low cost. Therefore, we usually use this method to produce aluminum sheets for PS plate, but it will not used to make CTP plate.

The continuous casting and direct rolling is short-process production process, featuring energy saving and emission reduction. This method saves the energy consumption of aluminum ingot cutting, surface milling and aluminum ingot preheating, the lower limit of the thickness of the hot-rolled strip is 1 mm, and part of the cold-rolling passes can be saved.

What’s more, the yield of continuous casting and direct rolling is 94% to 96%, which is unmatched by other methods. However, the surface quality and performance of its products are slightly worse than those of ingot hot rolling. It can satisfy the requirements of PS plate. We still use ingot hot rolling method to produce high quality aluminum sheet for thermal plates.

Original Source: https://www.alumhm.com/a/what-is-offset-printing-plate-thickness.html