Talking about the Application of Pipe and Tube Welding Equipment in Power Station Heat Exchanger Products

The heat exchangers in the auxiliary equipment of the power station (such as low-pressure heaters, high-pressure heaters, etc.) belong to the second and third types of pressure vessels. Because of the high sealing requirements of these heat exchangers, most of them are used to withstand vibration and fatigue. In the case of load, etc., in the actual manufacturing process, the welded joint of the heat exchange tube and the tube sheet is the most numerous and complicated in the manufacturing process, and the most frequent failure in the use process, and the welding quality is directly related to the heat exchanger quality. Therefore, it is usually used as a witness point for key assessments.

Harbin Boiler Factory Co., Ltd. is an old-fashioned manufacturer of heat exchanger products for power stations. It has been committed to building excellent brands at home and abroad. It has rich and unique experience in design, manufacturing and testing. The attached table shows the typical types of joints of our company. Manufacturing process. Our company extensively adopts the method of strength welding and swelling in the design and manufacturing process. The connection method of this type of expansion welding is better than the welding or expansion joint in terms of thermal shock, crevice corrosion resistance, vibration resistance and fatigue.

Typical product connector type and manufacturing process

One of the key factors in ensuring the quality of such joints is the selection of special, suitable welding equipment. Usually imported equipment (POLYSOUDE equipment in the drawing) often has certain technical advantages in terms of design concept, ease of use and stability, operation accuracy, service life and surface formation of welds, and is generally favored by users. Become a "model machine" representative of welding such joints. However, the fly in the ointment is that there are also expensive equipment costs, a single scope of application and high maintenance costs.

POLYSOUDE welding equipment

With the development and progress of domestic science and technology, and the acceleration of the localization process, many domestic equipment manufacturers have seen business opportunities and actively strived for technology research and development, constantly shortening the technological gap with imported equipment, and as far as possible in equipment cost and maintenance. More favorable conditions for the cost, breaking the situation of imported equipment. At the same time, some domestic equipment manufacturers have developed a new generation of fully automatic visual digital TIG pipe and tube plate welding machine in order to pursue efficiency. In order to further improve the welding efficiency, it also greatly improves the operator's process level requirements and operation difficulty. Therefore, it has not been widely used. Imported manufacturers are now clearly aware that "the wine is also afraid of the deep truth of the alley", and is actively seeking domestic platforms to further reduce costs. The fierce competition between the two sides "you sing me to debut" has made this market enter a virtuous circle. Becoming a market situation controlled by the buyer, so whoever can truly achieve "good value for money" and "value for money" will become the final winner.

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