Advantages of ERW pipe

by leah li on Nov 1, 2023 Business 305 Views

Advantages of ERW pipe

High-frequency welded pipe (ERW) needs to go through a series of processes from raw materials to finished products. The production process mainly depends on the product variety. The completion of these processes requires various mechanical equipment and welding, electrical control, and testing devices. These equipment and devices are reasonably arranged according to different process flow requirements. High-frequency welded pipes mainly use the skin effect and proximity effect of high-frequency current to highly concentrate the current on the edge to be welded, heating it to the welding temperature within one hundredth of a second, and then performing pressure welding under the action of the squeeze roller. .

The advantage of high-frequency welded pipe processing technology is that there is a heat treatment process after welding to eliminate the residual stress in the weld and the heat-affected zone, refine the grains, the heat-affected zone of the weld is small, and the heating speed is fast, which can greatly increase the welding speed and The quality of the weld seam can be used as a steel strip blank without the need for pickling, shot blasting or trimming. It can weld alloy steel, high alloy steel and non-metallic steel at the same time. Ferrous metal pipes greatly reduce unit power consumption. Equipped with a set of welding equipment, various types of high-frequency welded pipes can be produced.

But at the same time, for high-frequency welded pipe units, the larger the diameter, the more restrictions are placed on the coil weight and wall thickness of the strip steel material. Storage equipment is limited by spiral loops. In addition, the linear speed of the high-frequency welded pipe unit is relatively high, and the speed of the arc welded pipe is generally 3m/min, which does not match each other. Therefore, high-frequency welded pipe units need to make full use of and expand their own advantages to improve product quality and develop new products.

Article source: https://article-realm.com/article/Business/53195-Advantages-of-ERW-pipe.html

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