What are the differences between the manufacturing process of Dalian spherical storage tanks and ordinary storage tanks?

Dalian spherical storage tanks and ordinary storage tanks have important applications in the industrial field, but there are many differences in their manufacturing processes.

From the perspective of material preparation, the shape regularity of ordinary storage tanks is slightly weaker. When selecting materials, more consideration should be given to basic properties such as strength and corrosion resistance to meet conventional storage requirements. Due to its special spherical structure, spherical storage tanks have higher requirements for material strength, toughness, and weldability to withstand greater internal pressure. High quality steel is often used, and the selection of material thickness and other specifications is also more stringent.

In terms of forming technology, common types of ordinary storage tanks include horizontal cylindrical and vertical cylindrical shapes. For example, horizontal cylindrical storage tanks can be assembled by welding steel plates into cylinders through a plate rolling machine, which is relatively direct. Spherical storage tanks require the use of specialized ball valve pressing equipment to press steel plates into the shape of individual ball valves, and then assemble them through precise splicing. The control of the curvature and dimensional accuracy of the ball valves is extremely strict, otherwise it is difficult to assemble them into a standard spherical shape, which affects subsequent performance.

In the welding process, the main focus of ordinary tank welding is to ensure that the weld seam is firm and sealed. Due to the need to withstand uniform pressure distribution, the welding of Dalian spherical storage tanks not only ensures strength and sealing, but also requires rigorous calculation and planning for the selection of welding sequence and welding process parameters to prevent welding deformation and other problems that may affect the roundness and overall structural stability of the sphere.

In addition, there are differences in the testing process, with ordinary storage tanks focusing on conventional non-destructive testing to ensure weld quality. In addition to these basic inspections, Dalian spherical storage tanks will also focus on detailed inspections of the overall spherical geometric dimensions, wall thickness uniformity, etc., to ensure that they can operate safely and reliably under special working conditions such as high pressure.