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| The processing knowledge of aluminum foil |
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Posted by: haomeialu - 02-26-2018, 06:53 AM - Forum: Knowledge & Technique
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Aluminum foil has the most widely application in our daily life, it has the thinnest thickness of aluminum alloy, so the processing method must be strict. With the development, there is double zero aluminum foil in the market, so the processing technology must be advanced. As we have export a lot of aluminum foil products to different countries for different use, we can summarize some knowledge to you.
![[Image: aluminum-foil.jpg]](http://thick-aluminum-plate.com/images/pic/aluminum-foil.jpg)
aluminum foil
Aluminum foil is processed by aluminum foil billets through rolling mills. The most important method of aluminum foil manufacturing process is the rolling. Rolling is one of the most common machining methods in metal pressure processing. Rolling process is the interaction between the rolled material and the rolling, rolled pieces are pulled into the rotating roll, it is pressed and has plastic deformation. Aluminum foil billets are divided into hot-rolled billets (DC), cast billets (CC). Automatic thickness control system (AGC) is an automatic control system required by modern aluminum foil mills to keep the thickness and precision of aluminum foil products produced within a relatively high range. After aluminum foil is processed, there are another step-cutting. The aluminum foil is rolled to the appropriate dies according to users’ requirements, cutting into the users required width and length (diameter), according to user requirements, aluminum foil smooth or dark surface roll on the outer surface, the decapitation with ultrasonic welding and other methods to connect the firm or make obvious markings.
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| The performance and property of aluminum circle |
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Posted by: haomeialu - 02-26-2018, 06:48 AM - Forum: Knowledge & Technique
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Aluminum circle is a kind of round aluminum plate products, among the 8 series aluminum alloy, 1000 series and 3000 series Aluminum circle are usually used in the market. As one of the professional aluminum circle manufacturers, we Haomei Aluminum supply Aluminum circle s with all specification to the clients all over the world. While applied in the industries, with different performance and property, aluminum discs have different application. In general, Haomei aluminum circle has features as follows.
![[Image: 1-160926164T40-L.jpg]](http://hmalu.biz/uploads/allimg/160926/1-160926164T40-L.jpg)
aluminum circle
1, The Aluminum circle has good surface performance, which ensures no obvious scratches, oil pollution, oxidation, black spots on the surface, which is very good to process products like cookware and lamps.
2, Keep good control of the grain size and elongation at the early stage, which ensures the good deep drawing and spinning performance the Aluminum circle , and effectively avoids the bad phenomena of wire drawing, lotus leaf edge and so on. For future processing, the quality is guaranteed.
3. Strictly control the alloy, temper and performance to ensure the accuracy and diversity of the aluminum circles, we are sure to provide products meet customers requirements, the processed products have been checked before delivery.
4. The Aluminum circle of Haomei Aluminum is classified in details. According to the customers' different uses and requirements, the accurate category can be selected, we have more than 25 years’ experience to help you on the specification choice.
5. The product is packed firmly and safe, which conforms to international export standards, we choose trusted ship line to shorten the delivery time.
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| 1000 Color Coated Aluminum Coil |
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Posted by: aluhm - 02-26-2018, 06:34 AM - Forum: Buying Leads
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1000 Color Coated Aluminum Coil
Product name
1000 series coated aluminum coil price
Grade
1000 series
Standard
GB, JIS, ASTM, AISI
Surface
PS/Mirror/Embossed/Oxidation/HL
Thickness
0.2~5000mm
Width
10~2500mm
Usage
Solar reflection, building exterior,appliance, furniture, machinery parts processing, mold manufacturing , chemical
Condition of delivery
Austenite in solution, ferrite in anneal or in accordance with client's detailed requirement
MOQ
1 Metric ton
Price terms
CIF or FOB or CFR
Payment terms
L/C or T/T
Supply ability
25 Metric tons per day
Delivery Detail
7-30 days,according to the quantity.
Packaging Detail
Full wrap by plastic packing-cloth
[*]EL：+86-0371-65621391
[*]Fax：+86-0371-65621393
[*]E-mail:wade@aluminium24.eu
[*]Office Add: 1103.No.14 Waihuan Road, New district, Zhengzhou, China
[*]Zip code: 450046
[*]website：www.hmalu.biz
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| How do I calculate the weight of aluminum? |
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Posted by: aluhm - 02-26-2018, 03:29 AM - Forum: aluminium faq
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To calculate the weight of aluminum, one needs to determine the size of the aluminium in cubic centimeters, and then, they need to multiply that number by the weight of the aluminum. Aluminium weighs 2.699 grams per cubic centimeter.
How do I calculate the weight of aluminum?
If someone has a small square block of aluminium that is 1 centimeter high, wide and long, they have 1 cubic centimeter of aluminum. When they multiply that number, 1 cubic centimeter, by the weight of aluminium, 2.699 grams per cubic centimeter, the result is 2.699 grams.
If one prefers to calculate the weight of aluminium with imperial rather than metric measurements, one should use the imperial weight of aluminium. The imperial weight of aluminum is 1.56 ounces per cubic inch.
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| Calculation method of aluminum metal weight |
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Posted by: aluhm - 02-25-2018, 07:41 AM - Forum: Knowledge & Technique
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1. Aluminum plate/aluminum platoon:
Density X thickness (MM)X length (M)X width (M)X quantity (PCS)
Example: aluminum plate 6061 15*1220*2440 1.
15 * 1.22 * 2.75 * 2.44 * 1 = 122.79 KG
2. The aluminum bar:
Diameter (MM)* diameter (MM)* length (M)* quantity (PCS)
Example: 7075 Ø 20 * 2500 two bar
20 * 20 * 2.5 * 0.0022 * 2 = 9.49 KG
3. Aluminum tube:
Wall thickness (MM)*(outer diameter - wall thickness)MM* length (M)* quantity (PCS)
Example: aluminum tube 6063 Ø 30 * Ø 18 * 2500 2
24 * 2.5 * 0.00879 * 6 * 2 = 6.3288 KG
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| Analysis of common problems of 5052 aluminum plates |
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Posted by: haomeialu - 02-25-2018, 07:39 AM - Forum: Knowledge & Technique
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The most common use of the 5052 aluminum plates is the appearance or electronic parts. The common problems of 5052 aluminum plates are as follows:
![[Image: 3105-aluminum-plate.jpg]](http://thick-aluminum-plate.com/images/pic/3105-aluminum-plate.jpg)
There are defects on the surface of the aluminum sheet.
The surface problem of 5052 aluminum plates, except for the case and billet, is derived from the production process of each machine.
2. After oxidation, color difference, black silk, sand hole and other defects.
Black silk can be caused by many reasons, such as the accessory machine drops of the mill on the oil due to poor management, such as stress or too much tension on the surface of indentation, if again to the thin material of rolling, the dark mark will become more and more to the more thin, dark lines or black line, and sometimes even can't distinguish oil or mark, even can't see what's the color on the surface, but were very obvious after oxidation, for the customer, see inconsistent phenomenon appearance, affirmation is to refuse. After oxidation, black silk is the most effective. Once this happens, there is almost no room for survival, and the loss and consequences are irreparable. Second off color, generally do look more products, also cannot appear off color, any customer is unwilling to accept a similar "two leatherface" products, in order to eliminate these problems, or want to rely on the source machine to control.
The reasons of sand hole, sand hole is commonly internal structure problem, because when slab ingot impurities or didn't rule out clean water, or other elements not mix factors such as, so request in ingot casting the source link to control testing.
3. Performance requirements: tensile strength, hardness, elongation, bending requirements, etc.
As for performance problems, the most is the bending deformation, this link because the customer product use different, cannot treat as the same, but in general the annealing at this stage, how many temperature, how long, how thick to retreat, there is a standard.
5052 aluminum plate has wide USES, the product is classified, but as long as pay attention to each link of the controls, to the common problem in source control, process stability, make sure to attract market products!
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| Aluminum plate manufacturers talk about the reason of the aluminum plate |
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Posted by: aluhm - 02-25-2018, 07:34 AM - Forum: Knowledge & Technique
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With the continuous development of China's economy, the demand for aluminum plate is increasing. But the quality of aluminum plate is also has certain defects, production experience, production of aluminum plate aluminum plate tend to have the phenomenon of brittle, so this is what causes, below small make up to tell you something about the causes, and how to change this phenomenon:
1, due to shunt bar is usually caused by poor convergence performance should be appropriately increased muscle and outside surface, reinforcement and reinforced the confluence of the length, or increase the compression ratios, the change of the die head pressure can change the die head straight length to adjust the material flow resistance; Different compression ratios can be selected to change the extrusion pressure in the mold design stage, but it must be noted that the compression ratio of the machine head is suitable to the compression ratio of the extruder screw. By changing the formula, the extrusion process parameters can be adjusted to increase the size of the melt pressure.
2. Insufficient head pressure. The pressure of the die head is determined directly by the compression ratio of the die, especially the length of the flat section. The compression ratio of the die head is too small or the flat section too short will cause the product not dense, affect the physical performance.
3. Unreasonable cross section design, especially the distribution and interface Angle of the inner ribs. This will result in a stress concentration phenomenon that needs to be improved to design and eliminate the right angles and acute angles at the interface.
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| What are the characteristics of aluminum alloy iron additive tablets? |
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Posted by: haomeialu - 02-25-2018, 07:14 AM - Forum: aluminium faq
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With the rapid development of social economy, especially in the industrial construction process, will use a variety of white powder or granular flux, of which aluminum alloy iron additive in the process of metal smelting plays an important role. You will find aluminum alloy additive product features more obvious, mainly by a variety of inorganic salt drying treatment in accordance with a certain proportion of mixed ratio made, then, you know the characteristics of aluminum alloy additive products?
[img=300x0]http://www.aluminiumstrip-hm.com/wp-content/uploads/2018/02/20170915102390549054-300x281.png[/img]![[Image: 20170915102390549054-300x281.png]](http://www.aluminiumstrip-hm.com/wp-content/uploads/2018/02/20170915102390549054-300x281.png)
What are the characteristics of aluminum alloy iron additive tablets?
First of all we have to know in the industrial production process which will use a variety of aluminum alloy iron additive tablets, and aluminum alloy iron additive product advantages of performance is more obvious, mainly used to clear the internal aluminum liquid and floating in the oxidation Slag, you can make aluminum liquid becomes more pure, with the role of slag agent. The aluminum alloy iron additive product is characterized by good stability, is easy to break down at high temperatures, the gas will produce hydrogen reaction, but also from the solution which overflow, in the aluminum smelting process which plays an important role.
You will find aluminum alloy iron additive products, the scope of application is still relatively wide, especially in the smelting of aluminum and aluminum smelting play an important role. At the same time, you have to understand its use, you can add the entire aluminum alloy iron additive products evenly into the aluminum liquid which quickly pressed into the aluminum liquid, fully stirred after standing, slag, and then you can also use inert gas Aluminum alloy iron additive tablets into the aluminum liquid effect is better.
What are the characteristics of aluminum alloy iron additive products, you should know clearly? In many large and small enterprises smelting aluminum products, you must actively understand their use, but also pay attention to its use, the entire amount of aluminum alloy additive products for the amount of aluminum liquid weight of about 0.3%, the higher the purity of aluminum The words can be appropriate to add some aluminum alloy iron tablets. In addition, in the packaging storage time, you should pay attention to dry storage.
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| Common problems with aluminum plates and causes |
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Posted by: haomeialu - 02-25-2018, 07:08 AM - Forum: Knowledge & Technique
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Common problems with aluminum plates and causes
1. The surface bubbles
2. The quality of the perforation is not good. The hydrogen content of the ingot is loose. The uneven surface of the ingot surface is dirty to the east and is not cleaned before the furnace. After the corrosion, the cast block and the coated aluminum plate surface have erosion residue traces; The heating time is too long or the temperature is too high. When the first weld is rolled, the emulsion is not closed, and the emulsion flows under the aluminum plate.
3. The cracking of the cast block is too large, and it is cracked from the end of the ingot. The heating temperature is too high or too low.
4. The mechanical property is not qualified and the heat treatment system or the heat treatment equipment is not normal. Quenching fashion material is large, salt bath tank temperature is not enough fashion furnace, thermal insulation time is not enough, did not reach the specified temperature is out; The heat treatment system or test method adopted in the laboratory is not correct; The sample size is incorrect and the sample surface is damaged.
5. The casting quality is not good, there are metal or non-metal residue in the aluminum plate.
6. The tear lubricant composition is not qualified or the emulsion is too strong, the plate and the roll can slide, the metal deformation is not uniform; The rolling rate is not controlled, and the pressure is too large. Excessive rolling speed; The tension of the drum is not correct and the tension is unstable. Poor annealing quality; Insufficient metal plasticity; The roller type control is not correct, the metal internal stress is too large; Edge of hot rolled drum; When rolling, the lubrication is not good. The coil is not positive, and the tension stress is generated on the side of the plate, and the pressure is produced. The edge is produced by a small tear. After repeated rolling, it continues to expand from the crack and even tear. In the finishing time, the clamping clamps are unevenly or unevenly, or the plates have split edges, which can cause tearing when stretching. When quenching, the hood is not good or too tight, so that the plate fracturing, stretching and straightening can cause tearing.
7. It is not correct to adjust the amount of overpressure. Failure or improper use of thickness gauge; Roller type control is not correct.
8. Pressing (folding) roller type is incorrect, for example, the bearing of the press light machine is hot, so that the roll end of the roll is swollen, and the result is thin on both sides of the plate. The front plate wave is too large, so that the pressure light is too large, and the pressure is broken. When the laminate is pressed light, it is easy to produce pressure. The plates are thick on both sides and easy to produce pressure.
9. Non - metal rolling mill roll, roller, scissoring machine and so on not clean, the processing of the dirt in the aluminum plate car, through rolling and forming; The parts of the roller, guide roller, three-roll straightener and coiler of cold rolling mill are not clean, and the dirt is pressed in. The rolling oil nozzle is blocked or the pressure is low. The emulsion replacement is not timely, the aluminum powder is not clean and the emulsion tank is not cleaned.
10. The high temperature instrument of overheat treatment equipment is not accurate; The temperature is not uniform in each area of the electric furnace; In the absence of proper heat treatment system, the metal heating temperature reaches or exceeds the metal overheat temperature; If the loading is not positive, the area near the heater may produce local overheat.
11. When the metal is pressed into the heating process, the metal debris falls on the plate and is formed after rolling. When hot rolled, the edge of the roll is less, and the metal on the crack is dropped on the belt plate. The cutting edge of the disc is not good, the edge of the belt is burr, and the compressed air does not blow the metal scraps on the surface of the belt plate. After the roll is glued, the aluminum plate is pressed onto the strip. The ruler was clamped tightly and the scraped crumbs fell on the board.
12. The wave roller type adjustment is not correct, the original roller type is not suitable; Failure or improper use of panel control system; The raw material of cold rolled raw material or the convex in the section; The selection of pressure rate, tension, speed and other technological parameters is improper. All kinds of straightening machine adjustment is not good, straightening roll gap is not consistent, make sheet thin side produce wave; For stretch straightening and bending straightening machine, the elongation rate is not chosen properly.
13. After hardening, washing and drying, the surface residual acid, alkali or nitrite traces will be corroded after a period of time. Improper storage of board, water drop on board; In the process of processing, the auxiliary materials of contact products, such as oil, rolling oil, emulsion, packaging oil, etc. contain water or alkaline, which may cause corrosion; Too high temperature or bad packaging during packing, damaged during transportation.
14. Cut hot rolling mill roll, guide plate to adhere to aluminum, make hot pressing plate with scratch; The guide plate of cold rolling mill, pinch roller, etc. The finishing line is cut by the guide road; When the finished product is packed, it is not properly carried.
15. When the element diffuses annealing and quenching, the heat treatment system is not properly implemented, and the heating time can be prolonged or the heat preservation temperature can be increased. Too many times of annealing and quenching; The tail of hot rolled or pre-cut machine is not required to cut the head in accordance with the process specification, causing the aluminum layer to be unqualified. The wrong use of aluminum plate, the use of aluminum plate is too thin.
16. Too thick for the same reason as 7 "too thin".
17. It is easy to cause chafing when it is not careful. The conveyor belt is not positive, and the slanting plate is brought forward when rolling, so that the belt plate and the roll can produce relative friction. The tension is not correct when the volume is rolled, the tension is small when the roll is taken, the tension is large when the roll is open, and the roll pulls the roll tightly to make the plate stagger. There is too much oil in the lubricating oil, which is different from the residual oil on the drum after rolling.
18. The disc shear spacing is adjusted too narrow after narrow shear; Insufficient spare capacity of hot coarse rolling; When the hot finishing mill is adjusted, it is not very good to consider the amount of cold shrinkage and shear allowance during shear.
19. In the short cut, the ruler or equipment malfunction.
20. The two ends of the roller are different at the end of the roller. The guide tape board is not positive, and the strip is extended on both sides. Hot mill roll preheating is not good, roll shape is not correct; The emulsion jet is uneven or the nozzle is blocked; When the press is rolled, the plate is not in alignment.
21. The heating temperature is too low, the crack edge produced when hot pressing is not cut off, and the edge is expanded after cold rolling. The edge of the hot roll is too small, which may cause the splitting edge; Too large or too small; The casting gate is not cut off, it will crack when hot rolling; Cut the sides unevenly, cutting too little, may produce a split edge; The annealing quality is not good, the metal plasticity is not enough; The aluminum sheet is not properly placed, so the side is not completely aluminum.
22. The crack or heating temperature is too high or too low; The rolling rate inappropriately causes compression.
23. Shrinkage hole casting quality is not good.
24. The emulsion is not clean, or the new emulsion is uneven.
25. When the emulsion mark is rolled, the emulsion is not blown clean, so that the emulsion is involved in the cylinder; The hot precision rolling temperature is too low, the emulsion concentration is too high; There is water in the duct, and it blows on the strap with the air.
26. The aluminum laminated aluminum sheet is not properly placed, and the metal clad aluminum plate and ingot are staggered when hot and rough rolling. In hot rough rolling, the cast block is not properly delivered; It is too small to weld when the welding is rolled. It is too large for the side aluminum casting roll. The cutting edge of finishing shear and hot finishing is not uniform, and too little is cut.
27. To be hit in the process of carrying or parking. When cold rolling or annealing, the card is not good, and the annealing material is not clean, there are metal objects or protrusions; Cold rolled into hard metal slag or other hard stuff.
28. In the cold rolling of the pine tree, the pressure is too large, and the metal is sliding due to the large friction force between the rolls. The concentration of rolling liquid is too large, and the fluidity is not good, and it cannot be distributed evenly on the plate surface, and the pine tree will be produced after rolling. The thickness display instrument fails; Cold rolling tension is too small.
29. The wave or sickle shape is produced by pressing the indentation hot rolling. When it is cut through the tail feeding roller, scissors, three rolls and so on, and the cutting of the guide plate of the rolling machine, it is crushed; The quantity of annealing charge or removal is more, so that the drum is loose; Hot rolled road aluminum scratch strip, after cold rolling production; The road of cold rolling mill, three rollers, five rollers appear to be viscous or roiling, scratches, abrasion aluminum plate, through rolling production; The tension of cold rolling and hot rolling is not stable, the tension size does not match, or the loading and unloading rolls are not careful, so as to make the laminates between the layers.
30. After the nitrite mark quenching, the washing is not clean, and the surface of the plate is not clean.
31. The roll of a cold rolling mill is coated with metal residue, or the roll is printed on the board. The straightening and rollers are sticky with metal scraps, not clear rollers or rollers. Before straightening, the metal residue falls on the plate and is caused by straightening.
32. The adhesive aluminum is caused by the uncleanliness of the straightener roller on the shearing machine. All multi-roll straightening machine is easy to stick to the plate surface; When hot rolling or cold rolling, the roll is sticky.
33. Break the sheet and handle with carelessness.
34. Kneading and quenching of the plate is too big and scratch each other; Careless loading and unloading, or loading too much, making the plates misbehave each other.
35. The tension control is improper when the horizontal wave cold rolled sheet, so that the inside turns in the drum make the nest. Stop in the middle of the rolling process.
36. The thickness of the aluminized layer is too high. The tail of hot rolled tail or preshear head is too small; Aluminum plate is used wrong; The alkaline wash time is too long.
37. Residual rolling oil on the plate after the oil trace.
38. Slip line plate during stretching for stretching quantity is too big a slip line (45 °) along the direction.
39. When the water mark is quenched, it is not cleaned and pressed to the plate.
40. The surface is not bright roller, roller, straightening roller is not enough, the lubrication performance is not good, too dirty.
41. Small black spots in the process of hot rolled plate, due to the high temperature emulsion decomposition, decomposition product and make the roll because of bad lubrication in the process of rolling friction and aluminum and the aluminum powder at high temperature interaction, produce "small black spots" in the emulsion, after rolling and pressure to the aluminum plate on the surface, form small black spots; Emulsion stability is bad, not clean, bad lubricity, prepared with hard water, uneven emulsion injection on the roll, and channel is not clean, roller, cooking, tubing, fuel tank is not clean and easy to produce "small black spots".
42. Due to the poor quality of the milling surface, the surface oxidation of the cast block is heated, and the quality of the cast block is not good enough to form a strip or block.
43. In the process of rolling, uneven deformation is produced in the end or side of plate, and it is spread when rolling.
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| What are the common quality problems of aluminum plates? |
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Posted by: aluhm - 02-25-2018, 07:02 AM - Forum: aluminium faq
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In aluminum plate with the production process, because the equipment or personnel error prone to quality problems such as reasons, aluminium is common quality problems summarized below here, hope the production department to attach importance to this problem.
Oil is a common quality problems: pollution is refers to the rolling aluminium tip surface with oil after the too much. And bring the excess oil, other than the rolling oil film in the process of cutting production and finished goods inspection visible surface with oil. These oil mainly by roll neck or mill on exports, bottom left, splash, dripping on the box, and the abnormal, rolling mill, rolling mill roller clearer thickness head drops of oil, and often complex than dirty.
This oil pollution will bring great harm to the surface of the aluminum coil: first, because most of the finished aluminum coil products are decorative or packaging materials, there must be a clean surface; Second, its thickness is thin, it is easy to form bubble in subsequent annealing, and it is affected by the excessive amount of oil in the area. The oil pollution defect is an important index to evaluate the quality of aluminum foil.
. Solution: strict inspection equipment before production, if once found in the device too much oil to wash and timely find the reasons, at the same time to board face cleaning products processing, if wash not to drop products do scrap processing, oil product storage and flow into the market is prohibited.
Scratches are frequent customers of quality problems: scratches, bruises, and bruises are intermittent or continuous on the surface of the aluminum sheet. It is usually produced when the sharp object is sliding relative to the surface of the foil.
The main reasons are: there are pointed defects on the surface of roller and guide roller. Shear, coiling, cutting mechanical guide roller, guide road with pointed defect or dry debris. Bruise: a scar on the surface of a box that is caused by a relative slip or dislocation due to the surface or surface of an object, or by the relative slip or dislocation after contact with the surface.
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