Round Duct Machine Working Principle

The Round Duct Machine works on the principle of rolling and forming metal sheets (such as galvanized steel sheet, stainless steel sheet, aluminum sheet, etc.) into circular ducts. The working principle can be described in several key steps:

• Material Feeding:The coil of metal sheet is loaded into the machine and fed by a decoiler and straightener.
• Rolling and Forming:The metal sheet is gradually bent into a circle shape by the rollers.
• Lock Seaming or Welding:The edges of the round duct are joined together by a lock seam machine or TIG welding system.
• Cutting:The duct is cut to the desired length by an automatic cutter.

With these steps, the round duct machine can continuously produce round ducts with precise dimension and uniform seam quality.

Learn more about HVAC duct design standards at sciencedirect.

Round Duct Machine Main Features

• High Precision Forming:Able to form ducts with accurate diameter and smooth circular shape.
• Fast Production Speed:Continuous working can improve the efficiency of production.
• Energy Efficient Design:Low power consumption, high working efficiency and stable performance.
• Easy to Use:PLC control system with simple operation and parameter setting.
• Automatic Cutting Function:Increase cutting accuracy and reduce waste.
• Heavy-duty Durable Construction:Robust machine frame for long service life.

Equipped with these features, the Round Duct Machine is suitable for the high-output production of HVAC ducts.

Round Duct Machines Overview

Round Duct Machines can come in various types to suit different production requirements. The most common types include the following:

• Spiral Duct Machine:This type of machine is used to produce spiral ducts with interlocking seams. It is well-suited for making long-length ducts.
• Lock Seam Duct Machine:This type of machine creates ducts with mechanical lock seams, which provide strong and durable joints.
• Welding Duct Machine:This type of machine forms stainless steel ducts by using TIG welding or plasma welding.
• Flexible Duct Machine:This machine is used to produce lightweight, flexible ducts, typically used for temporary ventilation systems.

These are just a few examples, and there are other specialized Round Duct Machines available for specific applications and materials.

Benefits of Round Duct Machine 

The following are several advantages of using Round Duct Machine:

• Uniform Quality:Automated forming process ensures consistent diameter and smooth seams throughout the ducts.
• Higher Productivity:Continuous material feeding and automatic cutting help to save time and increase efficiency.
• Labor Cost Saving:The entire production line can be operated by a single person.
• Better Airflow:Round ducts provide less resistance to airflow, resulting in improved air distribution.
• Customization:Adjustable rollers and dies can be used to produce different duct sizes.

These benefits make the Round Duct Machine a critical tool for professional HVAC manufacturers and ventilation system fabricators.

Round Duct Machine Uses

Round ducts made by this machine have various applications, such as:

• HVAC systems for commercial buildings
• Industrial ventilation systems
• Air exhaust and filtration lines
• Power plants and refineries
• Ventilation systems in underground parking lots

Round ducts are also commonly used in clean rooms, hospitals, and data centers, where precise air control is essential.

Round Duct Machine Technical Parameters

Round Duct Machine model’s technical parameters are as follows:

• Material thickness: 0.4–1.2mm
• Duct Diameter: 80–1500mm
• Working speed: 4–35m/min
• Power supply: 380V / 50Hz
• Control mode: PLC touch screen

Note: The above parameters are only for reference. According to the actual model and customer needs, there may be some differences.

Rolling and Forming Machine maintenance and operation skills

If the rolling and forming machine is to operate stably and prolong its service life, then you must pay attention to the maintenance and operation skills below.

1. The rollers and guide rails should be cleaned in time during operation.
2. Check the quality of the seam often.
3. It is necessary to lubricate the moving parts of the machine in time.
4. If the cutting blade of the rolling forming machine is worn, it must be replaced in time.
5. Keep the feeding rollers in the machine straight.

Maintenance of the duct rolling machine should be regular and consistent, so as to prevent the duct rolling machine from stopping and ensure the smooth rolling and forming of the duct.

Choose a reliable brand Round Duct Machine manufacturer

A good manufacturer of Round Duct Machine must ensure the quality of products, after-sales and service, and after-sales technical training.

Nanjing Bangwin Machinery Co., Ltd. offers complete duct fabrication production lines and systems, including spiral duct machines, lock seam machines, duct sawing and cutting equipment, and more. The company can customize complete duct processing lines to meet the different requirements of small workshops and large HVAC engineering contractors.

Comparison: Round Duct vs Rectangular Duct

Round ducts save energy and improve system performance, making them the preferred choice for modern HVAC projects.

Environmental Benefits

Round ducts produced from efficient forming machines reduce waste of metal and energy. Their smooth inner surface also reduces air friction, thus minimizing HVAC power consumption.

Hence, Round Duct Machine aids in eco-friendly manufacturing and ventilation system designing.

FAQs

Q1: What kind of sheet material can this machine form?

Galvanized steel sheet, stainless steel sheet, and aluminum sheet can be used.

Q2: What is the difference between spiral and lock seam duct?

Spiral duct has high strength, suitable for long duct runs. Lock seam ducts are more flexible to be customized in short duct sections.

Q3: How much time does it take to produce a duct?

The speed of duct production varies between 4–35 m/min. depending on the model.

Q4: Is it easy to operate?

Yes, PLC-based control is simple to operate and provides stable control.

Q5: Is it possible to connect this machine to other HVAC production lines?

Yes, duct cutting, flanging and seam closing machines are all easily connected.