What is a tube mill? A tube mill is a machine that converts metal strips into welded pipes used in construction, plumbing, and other industries. In this guide, we will explore what is a steel tube mill, covering its definition, components, types, and processes to give you a clear understanding of how they work.
Table of Contents
Key Takeaways
Tube mills are essential machines used for manufacturing welded steel tubes and pipes, critical to various industries.
Key components of tube mills include the Uncoiler, Strip-Head Shearer& Butt Welder, Looper, Forming&Sizing Mill ,Flying saw ,Conveyor Table and Automatic Stacking&Packing Machine, all of which ensure high-quality production.
The selection of tube mills should consider tube specifications, production rates, compliance with standards, and budget constraints.
What is a Tube Mill Machine
Tube mills are specialized machines designed to manufacture steel tubes and pipes by welding strips of metal along their length. These machines, also known as a tube and pipe mill, are vital in producing welded tubes used in various industries. Tube pipe mills produce pipes for gas and water supply systems, structural scaffolding, and many other applications.
The main categories of tube mill machines include high-frequency welded pipe machines and stainless steel pipe making machines. These machines play a crucial role in industries like sewage, industrial applications, and even in the production of scaffolding. The versatility and efficiency of tube mills make them indispensable in the modern industrial landscape.
Key Components of a Tube Mill machine
A tube mill is a complex machine comprising several essential parts that work together to produce high-quality pipes and tubes in a pipe mill. Key components include:
Uncoiler
Strip-Head Shearer& Butt Welder
Looper
Forming&Sizing Mill
Flying saw
Conveyor Table
Automatic Stacking&Packing Machine
Each part plays a pivotal role in ensuring the seamless operation of the tube mill machine.
The uncoiler is responsible for expanding the steel strip hydraulically or pneumatically, allowing it to enter the machine smoothly. The straightener ensures that the steel strip is uniformly planar, preventing any defects in the final product. The welding section then aligns the weld seam, guiding the pipe to ensure a closed seam before welding.
After welding, the tube is sized to precise dimensions using a sizing mill, ensuring uniform thickness. It is then cut to the required length with a flying cutoff machine.
The Steel Tube Mill Process
The tube mill process is a sophisticated sequence of operations that includes uncoiling, forming, welding, grinding, sizing, straightening, and cutting. This process transforms steel strips into durable welded tubes used across various industries.
Let’s delve into each step to understand how tube mills produce pipe with precision and efficiency.
Uncoiler
Feeding a continuous strip of steel strips is the initial stage of the tube mill process, setting in motion the sequence of operations required to produce welded pipes. The uncoiler plays a vital role in this stage, unwinding the steel coil into a flat strip, which is essential for the forming process.
Straightening the steel strip ensures that the material is uniformly planar, which prevents defects in the finished product. Cutting the steel strip to the specified length prepares the material for the forming and welding stages, ensuring a smooth and efficient production process.
Strip-Head Shearer& Butt Welder
It is used to cut off the irregular parts of the tape head and tail, align the previous tape tail with the following tape head, and weld them together to continuously feed the looper. In the tube mill line, a roll of steel strip is filled into the looper. When the strip tail enters the shearing system of the shearing butt welding machine, the rear centering mechanism clamps the steel strip and positions it, and the shearing blade falls to complete the strip tail shearing. Then move the vehicle and adjust the welding seam.
Looper
Spiral loopers are divided into vertical, horizontal and floor-standing types. They are an important part of the welded pipe production line.
Their main function is to store raw materials, provide loading time, and ensure uninterrupted production of the equipment.
The looper has three main functions: (1) Buffering changes in metal flow, giving time for control adjustment, and preventing stacks of steel; (2) Adjusting the rolling speed of each stand to maintain continuous rolling constants. When various processes When the parameters fluctuate, signals and commands are sent for rapid adjustment; (3) The strip maintains a constant small tension within a certain range to prevent necking, uneven width or even breakage caused by excessive tension.
The welding process
The welding process in a tube mill is where the magic happens. The edges of the steel strip are melted and fused together, forming a strong and durable welded tube. Different welding techniques, such as Electric Resistance Welding (ERW) and high-frequency welding, are employed to achieve this fusion.
High-frequency welders are essential for enhancing weld quality and speed, making them a crucial component in the tube manufacturing process. These welders ensure that the welding process melts the edges efficiently, resulting in a seamless and robust welded tube.
Forming & Sizing Mill
In the forming section, the steel strip undergoes a transformation into a tubular shape. This section utilizes entry guides breakdown passes fin and the fin pass section to shape the steel strip into a blank tube. Rollers progressively shape the flat steel strip into a cylinder, preparing it for the welding process.
Specific rolls are used to bend the flat strip gradually into a tubular form while maintaining precise dimensions. This step is critical for ensuring that the tube’s dimensions are accurate and consistent, setting the stage for a high-quality welded tube.
It can produce not only round tubes, rectangular tubes, but also special-shaped tubes. And VZH-12 ~ VZH-273 ERW tube mill machines can produce steel pipes of various sizes and dimensions.
Flying saw
Steel pipe flying saw is a commonly used cutting machine in tube mill production. The saw blade of the flying saw is mounted on a carriage that moves back and forth at high speed and is controlled by a computer, allowing it to accurately cut the steel pipe as it passes through the machine.
Flying saw is the last process of production equipment on the welded pipe production line , which has a great impact on product quality and production efficiency.
Flying saws are divided into cold flying saws and hot flying saws. Cold flying sawing means that the steel pipe is quickly cut off by a high-speed rotating circular saw blade at normal temperature, and the cut end surface is flat and smooth as a mirror. Hot flying saw: Also called friction saw , high-speed cutting is accompanied by high temperature and sparks. The cut end surface is purple and has many flying burrs.
The cut surface of the cold flying saw is smoother and flatter than the hot flying saw. Therefore, the price of the cold flying saw is also much more expensive than the hot flying saw.
Conveyor Table
The Conveyor Table is a common production auxiliary tool. Its main function is to support the placement of raw materials, parts and other items during the production process. The use of Conveyor Tables can greatly improve production efficiency, streamline and order the production line, and help ensure product quality.
Automatic Stacking&Packing Machine
Automatic Stacking & Packing Machine is a highly integrated automated machine designed to increase productivity, reduce labour costs and ensure product packaging quality. Widely used in a variety of industries such as food, beverage, pharmaceuticals, and daily necessities, this machine is capable of efficiently completing the process of stacking, arranging, and packaging products.
Through the use of advanced sensing technology, robotic arm operation and precise control software, the automatic stacking and packaging machine can automate a series of operation processes from individual products to the final packaged products.
Types of Tube Mills
Tube mills are specialized machines used for forming and welding metal strips into tubular shapes for various applications. There are different types of tube mills designed for specific welding processes and applications.
Let’s explore two prominent types: Electric Resistance Welding (ERW) tube mills and high frequency welding (HFW) pipe mill
Electric Resistance Welding Tube Mills
Electric Resistance Welding tube mills are known for their highly automated process, leading to cost savings and efficient production. These mills utilize electric resistance as a primary method for welding, offering advantages such as speed and efficiency. The precision of forming rolls ensures high dimensional accuracy for the tubes, making them suitable for demanding applications.
The continuous weld in ERW tubes enhances their durability, making them ideal for industries like oil and gas, where reliable wall thickness is crucial. ERW technology accommodates a wide variety of tube sizes, from small to large diameters, catering to diverse industrial needs.
High Frequency Welding pipe mill
High-frequency welding pipe mill machine, such as those from Thermatool, are designed for enhanced reliability and efficiency in welding various metals, including carbon and stainless steel. These yoder w thermatool welder turksheads flying are known for their compact design, allowing for retrofitting on existing tube mills and replacing older vacuum tube welders, including the m2.5 yoder w welder and w3.5 yoder w thermatool.
The use of high-frequency welders results in superior weld quality with minimal heat input, ensuring efficient and robust welding processes. This makes them indispensable in modern tube mills, where precision and efficiency are paramount.
New vs. Used Tube Mills
Choosing between new and used tube mills involves considering the advantages and disadvantages of each option.
New tube mills often come with the latest technology and warranties, offering better performance and support. They may, however, require initial setup and calibration.
Used tube mills can offer significant cost savings, appealing to budget-conscious buyers. Purchasing used equipment, however, entails risks such as unknown wear or lack of service history, which can impact reliability.
Consider the availability of replacement parts for used mills, as older models may offer limited support.
How to Order Tube Mill Equipment
New Victor Industrial is a professional welded pipe production line manufacturer in China with 30 years of design and manufacturing experience. Contact New Victor for your welded pipe project feasibility report, free plant layout design and quotation proposal.
Engaging with knowledgeable specialists helps you get the right equipment tailored to your specific needs.
Conclusion
Understanding tube mills is essential for industries that rely on durable and precisely manufactured pipes. From defining what a tube mill is to exploring its key components and the detailed manufacturing process, this guide has covered all the critical aspects. We’ve also delved into different types of tube mills, provided guidance on selecting the right one, and compared new versus used options.
Choosing the right tube mill involves careful consideration of factors like material, production rate, and budget. Whether you opt for new or used equipment, ensuring that it meets industry standards and is cost-effective is crucial. Armed with this comprehensive knowledge, you’re now well-equipped to make informed decisions about tube mill equipment for your needs.
Frequently Asked Questions
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What industries use tube mills?
Tube mills are utilized in industries like gas, water, sewage, and structural applications, as well as for industrial and scaffolding purposes. This widespread usage highlights their significant role in manufacturing essential components across various sectors.
What are the key components of a tube mill?
The key components of a tube mill are the uncoiler, straightener, shear, forming section, weld station, sizing section, and cut-off section. These elements work together to efficiently produce welded and formed tube products.
What is the difference between new and used tube mills?
The key difference between new and used tube mills lies in technology and cost; new tube mills feature the latest advancements and warranties, whereas used tube mills provide cost savings but may carry risks of wear and limited support.
How can I order tube mill equipment?
To order tube mill equipment, reach out directly to manufacturers through their contact pages or by phone. Companies such as New Victor have product specialists available to assist you with your order and provide quotes.