EPA promulgated the Coil Coating Effluent Guidelines and Standards (40 CFR Part 465) in and amended the regulation in . The regulation covers direct and indirect dischargers. The Effluent Guidelines and Standards are incorporated into NPDES permits for direct dischargersA point source that discharges pollutants to waters of the United States, such as streams, lakes, or oceans., and permits or other control mechanisms for indirect dischargersA facility that discharges pollutants to a publicly owned treatment works (municipal sewage treatment plant). (refer to Pretreatment Program).
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Coil coating is a term generally used to describe the combination of processing steps involved in converting a coil--a long thin strip of metal rolled into a coil--into a coil of painted metal ready for further industrial use. Three basis materials are commonly used for coil coating: steel, galvanized steel, and aluminum. Additionally, there is some minor coating of other materials such as brass, galvalum (a zinc-aluminum alloy) and coated steels. There are three major groups or standard process steps used in manufacturing coated coils:
Water is used throughout the coil coating processes. The cleaning processes for removing oil and dirt usually employ water-based alkaline cleaners, and acid pickling solutions are sometimes used to remove oxides and corrosion. Water is used to rinse the strip after it has been cleaned. Most of the chemical conversion coating processes are water based and water is used to rinse excess and spent solutions from the strip. After painting, the strip is baked in an oven to dry the paint and then chilled with water to prevent burning or charring of the organic coating. The characteristics of the wastewater generated by coil coating may vary depending on the basis material and the process options selected for cleaning and chemical conversion coating.
Because of the amount of toxic metals present, the sludges generated during wastewater treatment generally contain substantial amounts of toxic metals.
At the time of the rulemaking there were approximately 75 coil coating facilities in the United States, operating over 125 coil coating lines.
The Canmaking Subcategory was added to the regulation in a amendment. Canmaking covers all of the manufacturing processes and steps involved in the manufacturing of shaped metal containers which are subsequently used for storing foods, beverages and other products. Two major types of cans are manufactured: seamed cans and seamless cans. Seamed cans (primarily three-piece cans) are manufactured by forming a flat piece or sheet of metal into a container with a longitudinal or side seam which is clinched, welded, or soldered, and attaching formed ends to one or both ends of the container body. At the time of the rulemaking about 300 plants in the United States manufactured seamed cans.
Seamless cans consist of a can body formed from a single piece of metal and usually a top, or two ends, that are formed from sheet metal and attached to the can body. there are several forming methods which may be used to shape the can bodies including simple drawing, drawing and redrawing, drawing and ironing (D&I), extruding, spinning, and others. About 125 plants in the United States manufactured seamless cans in .
In the manufacture of seamless cans, oil is used frequently as a lubricant during the forming of the seamless body and must be removed before further processing can be performed. Typically, this is accomplished by washing the can body in a continuous can washer using water based alkaline cleaners. This step is followed by metal surfacing steps to prepare the can for painting.
Because of the toxic metals present, the sludges generated during wastewater treatment generally contain toxic metals.
At the time of the rulemaking, 88 of the approximately 425 can manufacturing plants in the United States discharged wastewater.
Excluded from the Canmaking Subcategory: Manufacture of seamed cans, can ends, can tops and seamless cans from coated (e.g., coil coated) stock. No oil is used in this process and the cans do not need to be washed after forming.
Coil coating and canmaking activities are included within the following NAICS groups:
: Metal Can Manufacturing
: Metal Coating, Engraving (except Jewelry and Silverware), and Allied Services to Manufacturers
Note: The NAICS listing is provided as a guide and does not define the coverage of the Coil Coating category. For precise definitions of coverage, refer to the Applicability sections in 40 CFR Part 465.
The regulation covers coil coating operations in three subcategories, by basis material:
Steel
Galvanized (zinc-coated steel, galvalum, brass and other copper-base strip)
Aluminum (including aluminum alloys and aluminum-coated steel)
Subpart D covers canmaking operations.
Metals coverage under Effluent Guidelines
Added Subpart D
Subparts A-C
Final Rule (December 1, )
Development Document (November )
Industry description, wastewater characterization, treatment technologies, regulatory compliance cost estimates and pollutant loadings for the final rule
Proposed Rule (January 12, )
For additional information regarding Coil Coating Effluent Guidelines, please contact Erica Mason () or call 202-566-.
Aluminium Coil Coating is an economic type of coating line apply to most ACP top/bottom coil coating. Product thickness 0.1mm~0.5mm is common used for ACP.
Product Description
Aluminium Coil Coating makes use of a simple, but effective principle, to clean, pretreat and coat flat coils or sheets of steel or aluminium in a continuous operation, before other stages of industrial manufacture.
This is a high-quality type of coating line apply to most ACP (aluminium composite panel)top/bottom color coating. Products thickness 0.1mm~0.5mm is common used for ACP(aluminium composite panel). This aluminium coating line can also produce some gauges of roofing coils. With a rewinding line, this coating line meets basic requirements from raw material to finished products of coating factory. The line requires a high-quality minimum 70m×12m×7m workshop dimension, which suits most factories in limited dimension.
Aluminium line coated is a newly high-quality process for the coating of one or both sides of rolled coils of refined steel, metal,steel or aluminium with an organic color coating material. This aluminium line is for color coating on the surface of the coil. In contrast to other aluminium coating processes, the coils are first coated and then processe.Aluminium line-coated is used in a wide range of markets and productions of application.
Aluminium coating ensures long-term, effective protection of color surfaces against corrosion and other influences. Litong serves a specialist market with aluminium coating line products as well as supplying high-quality coating systems for special applications in the aluminium market. We developed a precise three-roll converse coating machine in international advanced level to well control the thickness and appearance of productions. As a development partner, we offer individual solutions tailored optimally to the respective technical requirements.
Guangdong Litong Environmental Protection Machinery CO., LTD is a professional Aluminium Coil Coating manufacturers, which is specialized in designing and manufacturing Environmental Protection Production Line, Aluminum Composite Panel Laminating Line (ACPL), Aluminum Color Coating Line (ACCL), Steel Color Coating Line (SCCL), Continuous Aluminum Anodizing Color Coating Line and so on. If you are interested in our products, please contact us!
1. Adopt high precision roll coating machine, excellent coating quality.
2. Suitable for acrylic, polyester, and polyvinylidene fluoride (PVDF) coatings.
3. Specifically designed to fit the area of the customer's plant.
4. Fine coating in accordance with international standards.
5. Easy to operate controls, online operator training available.
In short aluminum color coating provides a versatile product for the construction industry. Incorrect line design can lead to high scrap rates or inability to handle the full range of products, resulting in far lower production yields and incalculable losses, choosing the right coating line plant and aluminum coil coating machinery is critical for your painted aluminium coils. Please feel free to contact us to discuss your requirements.
You can then form the metal into a variety of uses. Numerous household appliances, including refrigerators, air conditioners, dryers, and hot water heaters, use some form of prepainted steel or aluminum in their construction. The automotive industry also utilizes prepainted steel or aluminum in their parts. A couple of large markets, metal roofs, and garage doors utilize the product, too.For coating top coil and bottom coil of ACP(aluminium composite panel)
Economical, high-quality and easy to use, small dimension workshop needed
Thickness:
0.1&#;0.5mm
Width:
mm
Outer diameter OD(max):
Φmm
Inner diameter:
Φ150mm, Φ405mm
Bobbin material:
Steel or paper
Inverval-layers deviation tolerence:
&#;0.8 mm (Excluding the bottom 5 layers and exterior 2 layers)
Coil over-all deviation tolerence:
&#;2 mm (Excluding the bottom 5 layers and exterior 2 layers)
Coating thicknes:
Dry film thickness: 8~20 um
Production Weight:
Max kg&#;Excluding bobbin&#;
Roller width:
mm
Coils feeding centering adjustment :
±75mm
Threading speed:
5&#;15m/min&#;Adjustable&#;
Line maximum speed:
30m/min
Line speed accuracy:
Steady Speed, ±0.1%;Acceleration, ±0.4%
Are you interested in learning more about oem aluminum color coated coil? Contact us today to secure an expert consultation!
Uncoiling tension range:
160&#;700kgf
Processing tension range:
160&#;700kgf
Coiling tension range:
320&#;kgf
Tension accuracy:
Steady Speed, ±1.0%; Acceleration, ±2.0%
Line space dimensions:
mm×7.500mm×mm
Heating Energy Source:
LNG, LPG
Coated aluminium can be used in food packaging to manufactures containers and cans. Coated aluminium makes trays more resistant to food with an aggressive pH or high salinity. More than this, it improves the aesthetic appeal of containers, adding personalisation capabilities and enhancing in the consumers the perception of the quality of the product.
Coil loading &#; Uncoil machine &#; Pretreatment (Including Degreasing, Roller brushing device, drying) &#; Chromizing &#; Drying &#; Re-direction &#; Topside roller-coating &#; Curing oven &#; Cooling &#; Tension machine &#; Recoiler &#; Coil discharging
Name
Quantity
Coil loading device
1
Sewing table
1
Pretreatment line
1
3M water drying device
1
Chromizing Coater
1
Chromizing drying device
1
Coater
1
Curing Oven
1
Heating system
4
Air cooling devices
1
3-rollers cooling device
1
Tension machine
1
Recoil machine
1
Electrical system
1
Rewinding line
1
Coil loading machine
1
Tension device
1
Coil discharging machine
1
*Optional configuration: waste gas treatment and energy recycle system.
Total power consumption:
80KW
Compressed air:
Min5.5bar&#;1Nm3/min, actual consumption 0.5Nm3/min
Water:
Deionized water, supply quantity is about 4T/h
Heating fuel:
LPG or LNG
LPG consumption:
0.2 CBM/min
LNG consumption:
0.5 CBM/min
The coating line project design and manufacture leads 90 days, installation and testing leads 60 days.
Trade terms: FOB, CIF are available
Payment terms: T/T, D/P, LC are acceptable
Packing style: Wooden pallet
Transportation: by sea
We look forward to working with you!
Aluminum coil coating is a process of coating a layer of paint or other protective material onto an aluminum coil through a series of mechanical and chemical treatments. This process is typically performed by using specialized equipment and machinery known as aluminum coil coating lines. These lines are designed to handle the coil of aluminum and apply the coating material uniformly over its surface.
The color coated aluminum coil produced by the aluminum coil coating process has a wide range of applications, including building decoration, transportation, packaging, and electronics. The coating material can be customized to meet specific requirements such as weather resistance, scratch resistance, and chemical resistance.
As an experienced and professional aluminium coil coating lines manufacturer and supplier, Guangdong Litong Environmental Protection Machinery CO., LTD has advanced technology and equipment to provide customers with high-quality aluminum coil coating solutions. Our aluminum coil coating lines are designed to handle various types of aluminum coils and offer high efficiency, energy saving, and low maintenance costs.
In addition to our aluminum coil coating lines, we also provide a range of related products and services, including aluminum color coating lines, steel color coating lines, and continuous aluminum anodizing color coating lines. Our commitment to quality and customer satisfaction has made us a trusted partner for many customers in the environmental protection production line industry. Send to us now for more detailed product information!
For more china color coated aluminum coil suppliersinformation, please contact us. We will provide professional answers.