The Different Requirements of PS/CTP Plate on Aluminum Plate

 The CTP offset printing plates’ basic requirements for the appearance of the aluminum plate base are clean, flat, free of cracks, corrosion pits, spots, vents, scratches, creases, marks, peeling, etc. There is no slight color difference.

The PS plate can ignore the above problems. The main reason is that the CTP equipment uses scanning imaging, unlike the PS plate, which uses a vacuum method to make the plate and the film close. If the CTP plate flatness is poor, it will affect the laser imaging quality.

The difference between CTP plate and PS plate on the geometrical size requirements of aluminum plate base:

1. Thickness difference

The thickness of the aluminum plate base for CTP thermal is generally 0.280mm, which is slightly thicker than the PS plates currently produced (the thickness of the PS plate base is 0.270mm±0.005mm). Since the aluminum plate base is thicker, the printing plate stiffness will be better, and it is not easy to bend.

2. Width difference

Since the production of CTP plates does not install an online trimming device, the width tolerance of the aluminum coil is required to be ≤±0.5mm, preferably without tolerance. There are also clear requirements for the cutting quality of aluminum coils, that is, there should be no burrs, flounces, etc. on both sides of the aluminum coil after slitting.

3. Vertical and horizontal uniformity

The longitudinal and transverse thickness tolerances of the aluminum plate base should be ≤±0.005mm. The thickness deviation will affect the plate making, and the parameters set by the CTP plate making machine are generally not allowed to be adjusted casually.

The difference between CTP plate and PS plate on the electrolytic performance requirements of aluminum plate base:

Because CTP printing plates are mostly used for high-end color printing, the basic grain value of CTP plates is finer than that of PS plates. The reduction is directly related to the surface roughness of the plate base, that is, the grain value of the plate base. The thicker the grain, the worse the reducibility of the dots and lines.

To prepare a fine and uniform grain, the internal composition of the aluminum plate base is very important, which is related to the composition of the aluminum alloy. Haomei aluminum plate for CTP thermal has good physical and mechanical properties and can significantly improve its electrolysis suitability. 

Original source: Original Source:

 https://www.alumhm.com/a/the-different-requirements-of-psctp-plate-on-aluminum-plate.html

5086 Rust-proof Aluminum

 Ships have special requirements for the strength, corrosion resistance and weldability of aluminum alloys, so when choosing marine aluminum sheet, Al-Mg alloy, Al-Mg-Si or Al-Zn-Mg alloy is often used.

The strength of Al-Zn-Mg and Al-Mg-Si decreases significantly after welding. Among them, the corrosion resistance of aluminum-zinc-magnesium alloys after welding is relatively poor, therefore they are subject to certain restrictions as a welding material. But Al-Mg aluminum alloy don’t have such shortcomings.

5086 Aluminum belongs to 5xxx Al-Mg alloy. Its Mg content is generally does not exceed 7%. With the increase of the magnesium content, the alloy strength will increase, while the plasticity will decrease. 5086 aluminum plate is usually used in annealed, cold work hardened or semi-cold work hardened state.

Due to the effect of magnesium, the density of 5086 aluminum sheet is larger than other aluminum plates, and it has very good corrosion resistance. It is also a well known rust-proof aluminum sheet.

According to the content of magnesium, the anti-rust aluminum plate can be divided into three categories: low magnesium content, medium magnesium content and high magnesium content. The aluminum sheet with low magnesium content is non-heat treatment strengthening. It also has relatively low strength, good weldability and good welding performance.

The aluminum plate with medium magnesium content is generally used for pipes and containers with high plasticity and medium corrosion resistance, while the anti-rust aluminum plate with high magnesium content is generally used for ordinary welded pipes, liquid containers and other parts.

5086 aluminum plate is of low magnesium content. Its application field has relatively high requirements for product performance. Therefore, its processing fee is higher than other 5xxx aluminum. Its tensile strength σb (MPa): ≥240, conditional yield strength σ0.2 (MPa): ≥95.

From 1966 to 1971, the United States built the first batch of 14 "Acivil"-class high-speed gunboats. The main deck and bottom of the ship were made of 12.7mm thick 5086-H32 aluminum alloy. The entire boat shared 71 tons of aluminum and all were welded by argon arc welding. It perfectly prevent rivets from loosening, water seepage and contact corrosion.

Original Source:https://www.marinealu.com/a/5086-rust-proof-aluminum.html

7050 and 7150 Aircraft Aluminium

7050 Aluminum is an Al-Zn-Mg-Cu high-strength alloy, which can be strengthened by heat treatment. It is developed on the basis of 7075 aluminum sheet, adding zinc and copper content and using zirconium instead of chromium to refine crystal grains. The content of impurities such as silicon and iron is reduced.

Due to the optimization of the chemical composition and the use of over-aging treatment, the aluminum alloy has excellent comprehensive properties such as high fatigue limit, good toughness, good stress corrosion resistance, and good hardenability while maintaining high strength. Its hot workability is similar to that of 7075 alloy, with general weldability and good machinability.

7050 aluminum plate is mainly used for main bearing structural parts with high strength, good fracture toughness, and high resistance to stress corrosion cracking and spalling corrosion, such as thick plates, extrusions, free forgings and die forgings for aircraft structure.

Due to the good hardenability of the alloy, it is especially suitable for manufacturing large thick section parts. The common tempers are T74, T76, and T73. For structural parts that require high strength and resistance to stress corrosion cracking, the T74 temper should be selected.

For the structural parts that require high strength and resistance to spalling corrosion, the T76 temper is generally used; The T73 temper is mainly used for rivet materials that require high strength and good corrosion resistance.

7150 aluminum sheet has high strength and good corrosion resistance. It is an improved alloy of 7050 aluminum. 7150-T65’s strength is 10%-15% higher than that of 7075 and the fracture toughness is 10% higher. The fatigue resistance is good, and the SCC resistance of the two is similar.

It is mainly used in the in the upper wing structure of the large passenger aircraft, the flange of the body plate beam, the main wing longitudinal beam of the upper outer panel, the fuselage reinforcement, the keel beam, and the seat rail.

The 7150-T77511 aluminum alloy has low electrode potential and is mainly used for corrosion-resistant covering skins, and also suitable for heat sinks of heat exchangers. Haomei Aluminum has both 7050 and 7150 aluminum for sale. Welcome to leave message below to inquire what you want.

Original Source:https://www.aircraftaluminium.com/a/7050-and-7150-aircraft-aluminium.html

Aluminum Alloy for Electric Car Body

 Electrical cars have an extremely urgent need for lightweight. For every 10kg reduction in the weight of a pure electric vehicle, the cruising range can increase by 2.5km. Among them, the lightweight chassis has a promising market. The penetration rate of aluminum battery boxes, subframes, control arms, steering knuckles, etc. has continued to increase, and thermoformed body parts have also begun to be used on a large scale.

At present, the most mainstream lightweight materials are high-strength steel and aluminum alloy materials. In 2020, high-strength steel and aluminum alloy will account for more than 85% of the automotive lightweight market, of which aluminum alloy used in cars accounts for nearly 65%.

The car body accounts for more than 30% of the total weight and reducing the weight of the car body is very important for lightening. Compared with the steel structure, the aluminum body has a 23% improvement in quality performance, a 74% increase in torsional rigidity, and a 62% increase in bending resistance.

In addition to meeting the mechanical properties and corrosion resistance required by standards and specifications, aluminum alloy automobile must also have good formability, weldability, anti-aging stability, paint gloss uniformity, dent resistance, surface smoothness and excellent bake hardenability, etc.

At present, body panels are mainly made of 5xxx and 6xxx car aluminum. The requirements for automotive inner panel are mainly deep-drawing formability and joining properties. The outer panel requires high strength, so the current automobile outer panel mainly adopts heat-treatable 6xxx aluminum like 6016 aluminum sheet.

The engine generally accounts for about 18% of the vehicle's weight, and the engine cylinder block accounts for about 25% of the entire engine's weight. The piston, radiator, oil pan, cylinder block and cylinder head, crankcase, connecting rod, filter and other parts of the engine can be made of aluminum alloy.

The alloy used in automobile suspension parts is mainly 6061-T6 aluminum sheet. 6A02-T6, 6060-T4, 6082-T6 aluminum alloy can be used as automotive anti-collision beam profiles, and aluminum bumpers can achieve the purpose of lightening.

Haomei Aluminum has rich alloys of aluminum automotive sheets, mainly covering 5xxx and 6xxx aluminium alloy. Welcome to leave message below to inquire what you want.

Original Source:https://www.autoaluminumsheet.com/a/aluminum-alloy-for-electric-car-body.html

5052 5083 and 5754 Aluminium Sheet

 Among the different alloys of aluminum plates, 5xxx aluminum -magnesium alloy has particularly excellent performance and is regarded as the most promising aluminum plate in the industry. 5052,5083 and 5754 aluminum sheet are the typical ones.

5754 Aluminum Sheet

The magnesium content of 5754 aluminum plate is higher than 5052 and lower than 5083. 5754 aluminum plate has high fatigue resistance, good corrosion resistance and good weldability. It is also a main alloy for making tank trucks. It is still used for automobile doors, engine compartment covers, molds, and seals. It can also be used to manufacture pressure vessels and ship parts.

5052 Aluminum Plate

5052 aluminum plate is the most representative 5xxx aluminum. The 5052 aluminum plate has medium strength, good formability, corrosion resistance and weldability, and high fatigue strength. It is a commonly used high-grade anti-rust aluminum. 5052 alloy aluminum plate is widely used in the automobile industry such as automobile fuel tanks, tubing, pipes, low-load parts, etc.

5083 Aluminium

5083 aluminium has a relatively high magnesium content, which is a high-magnesium alloy and cannot be strengthened by heat treatment. It has good strength and corrosion resistance, good machinability, weldability, and anodizing treatment.

5083 aluminum sheet can be used in shipbuilding, automobile, aircraft welding parts, subway light rail, pressure vessels that require strict fire protection(such as liquid tankers, refrigerated trucks, refrigerated containers), refrigeration devices, TV towers, drilling equipment,etc.

Haomei Aluminum has all these three aluminum alloys. Welcome to leave message below to inquire what you want.

Original Source:https://www.aluminumtankerplate.com/a/5052-5083-and-5754-aluminium-sheet.html

The Advantages of 24″ Aluminum Trim Coil

The aluminum trim coil is a new product in recent years, gradually replacing color steel plate in construction and decoration. It has outstanding fire-retardant function. The use of new flame-retardant materials can effectively prevent fires. Applying an antistatic coating on the surface makes it difficult to absorb dust in the air due to static electricity.

There are different treatment methods for the surface of 24” aluminum trim coil. The common coating is PE or PVDF. If the building has high requirements for the color of the coated aluminum coil, we can choose anodized aluminum coil. In pursuit of visual impact, we can choose brushing aluminum coil.

The color coated aluminum coil is of light weight and easy to process into various shapes, especially the strength is very high. And it is not easy to deform under various impacts. Regardless of the harsh conditions, the color can remain stable for a long time. It is also easy to maintain that dust can be easily removed by wiping gently.

Aluminum trim coil is for decorating your home's outside building surfaces such as window and door casings, porch posts, the drip edge and fascia. Its biggest advantage is of long service life in the building roofing industry. Generally, polyester paints can be used for more than 10 years, and fluorocarbon paints can be used for more than 20 years.

The organic coating is well integrated with the metal on the surface, and the color will not fade for a long time, which greatly extends the service life of the 24″ aluminum trim coil.

The use of organic coatings makes the surface of the color-coated aluminum coil stronger, and the excellent internal treatment process makes the color-coated aluminum coil have good scratch resistance.

The aluminum trim coil perfectly meet the lightweight design constantly mentioned in modern architecture. It is not only light, but also has excellent anti-rust and anti-corrosive performance. At the same time, the bearing capacity of the environment is reduced.

Original source: https://www.hm-alu.com/a/the-advantages-of-24-aluminum-trim-coil.html

Is 3003 Aluminum Circle for Cookware Safe

 Is 3003 aluminum circle suitable for making cookware? 3003 aluminum alloy is a raw material for high-end cookware, which is often used as the bottom plate in the kitchenware field, storage field or some liquid fields.

3003 aluminum discs is a commonly used Al-Mg alloy. Since it has aluminum and manganese elements, it is usually called anti-rust aluminum plate. Its weight is heavier than 1060 aluminum circle under same specifications.

Due to the addition of manganese element, the strength and hardness of 3003 aluminum sheet is about 10% higher than that of 1100 aluminum plate and 1060 aluminum plate. At the same time, it has the good solubility, good formability, and excellent corrosion resistance.

3003 welding is readily accomplished by means of conventional welding methods, but may be gummy if machined. It has excellent weldability by all standard methods, including gas, electric and resistance welding. GMAW and GTAW are preferred and widely used to produce structural welds. Filler alloys are usually 1100 although other alloys are possible.

Chemical composition of 3003 aluminum circle

Alloy	Al	Si	Cu	Zn	Mn	Fe	Other(each)
3003	remainder	0.6	0.05-0.2	0.10	1.0-1.5	0.7	0.05

In the field of home appliances, there are more mature cookware brands such as Supor, Midea and so on choose 3003 aluminum plate. Take the electric cookers for example. Although 1060 aluminum circle is a popular choice for cookers, 3003 aluminum circle is preferred by the high-end electric cookers for it has longer service life.

Haomei Aluminum has different forms of 3003 aluminum alloys such as 3003 aluminium sheet, 3003 aluminum circle, 3003 aluminum foil,3003 aluminum coil and 3003 aluminum strip. Welcome to leave message below to inquire what you need.

Original Source: https://www.alumhm.com/a/is-3003-aluminum-circle-for-cookware-safe.html