Weld Pipe To The Boiler Sheet In Industrial Boilers

2025-03-14 16:18:20

In the manufacturing process of industrial boilers, welding pipe to the boiler sheet is a crucial process link. This process not only directly affects the heat exchange efficiency of the boiler, but also affects the safety and service life of the equipment.

Importance of welding pipe to boiler sheet

Industrial boiler is a device used to generate steam or heat energy, which is widely used in power, petrochemical, pharmaceutical and other industries. One of the core components of the boiler is the connection between the pipe and the boiler sheet, which is usually achieved by welding. The quality of welding pipe to the boiler sheet directly determines the performance of the boiler:
1. Heat exchange efficiency: The welding quality affects the heat conduction efficiency between the pipe and the boiler sheet.
2. Sealing: Poor welding may cause leakage and affect the safe operation of the boiler.
3. Structural strength: orbital welding heads need to withstand mechanical stress under high temperature and high pressure environment.

Therefore, the welding process of pipe to boiler sheet must meet the requirements of high precision and high strength.

Orbital tube to tubesheet welding process and technology

In the manufacture of industrial boilers, commonly used welding technologies include manual arc welding (SMAW), tungsten inert gas welding (TIG) and metal arc welding (MIG). These technologies have their own advantages and disadvantages, and the specific choice depends on the design requirements and material properties of the boiler.

1. TIG welding: suitable for welding thin-walled pipes to boiler plates, can provide high-quality welds, but the efficiency is low.
2. MIG welding: suitable for thick-walled pipes, fast welding speed, but requires higher operating skills.
3. Automated welding: With the development of technology, tube to tubesheet welding heads have gradually become mainstream. These devices can achieve high-precision and high-efficiency welding while reducing human errors.

Application of Tube to tubesheet welding heads

Tube to tubesheet welding heads is a kind of automated equipment specially used for welding pipes to boiler plates. It has the following advantages in industrial boiler manufacturing:
1. High precision: accurate welding path control is achieved through the CNC system to ensure uniform and consistent welds.
2. High efficiency: Automated welding greatly shortens the production cycle and is particularly suitable for mass production.
3. High quality: Reduces the uncertainty of manual operation and improves the strength and sealing of welded joints.

For example, in the manufacture of large power plant boilers, tube to tubesheet welding heads can weld multiple pipes and boiler plates at the same time, significantly improving production efficiency. In addition, the equipment also supports a variety of welding processes (such as TIG, MIG), which can adapt to different materials and design requirements.

Orbital tube to tubesheet welding quality control

In order to ensure the quality of orbital tube to tubesheet welding, strict quality control measures must be taken:
1. Nondestructive testing: Use methods such as ultrasonic testing (UT) or radiographic testing (RT) to check the internal defects of the weld.
2. Process parameter optimization: Adjust parameters such as welding current, voltage and speed according to material and design requirements.
3. Post-weld treatment: Eliminate welding residual stress and improve the durability of the joint through heat treatment or mechanical processing.

Future development trend

As industrial boilers develop towards high efficiency and large-scale, orbital tube to tubesheet welding technology is also constantly improving. In the future, welding technology will pay more attention to automation, intelligence and greening:
1. Intelligent welding equipment: Combined with artificial intelligence technology, it can realize real-time monitoring and optimization of the welding process.
2. Green welding technology: Reduce energy consumption and pollution during welding and promote sustainable development.
3. Application of new materials: Develop new welding materials suitable for high temperature and high pressure environments to improve the performance and life of boilers.

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