1. The mechanical properties are basically the same. The chemical composition, mechanical properties and process properties of the titanium welded pipe and the titanium seamless welded pipe are not much different, or even the same. With the advancement of titanium welded pipe welding and heat treatment technology, single-gun or multi-gun TIG/PAW self-fusion welding is generally used for thin-walled titanium welded pipes. After welding, an online heat treatment process is used. The microstructure of the affected area is basically close, and the welding stress is eliminated at the same time, so that the weld structure is homogenized. By comparison, it is found that the composition of the weld seam of the titanium welded pipe is basically the same as that of the base metal, and the mechanical properties and corrosion resistance of the weld seam are the same as those of the base metal.
2. Good appearance and quality Titanium welded pipe is welded by cold-rolled coil, with uniform wall thickness, good concentricity, good finish, and it is not easy to scale in the pipe. It is difficult to achieve a wall thickness of less than 1mm for titanium seamless pipes through rolling or drawing techniques; while titanium welded pipes can achieve wall thicknesses of 0.5mm and below, saving a lot of materials and costs.
3. Excellent cost and environmental protection advantages. The production process of titanium seamless tubes is complicated. Usually, three-roll or multi-roll mills and drawing machines are used to roll or draw a certain standard tube blank in multiple passes, and then reduce the diameter and wall to produce seamless Tube. The production efficiency and yield of this process are low, and the yield is only about 50%. The titanium welded pipe is produced by automatic continuous production lines, using titanium coils with uniform wall thickness through cold bending, welding, online heat treatment, sizing and straightening, non-destructive testing and air tightness testing. The material utilization rate is usually around 80%.
Production and advantages of titanium welding control pipe machine
Titanium welded pipes are produced in large quantities by automated titanium welding control pipe machines, with stable quality and high production efficiency. In addition to the fixed water, electricity and other energy consumption during the production process, there is almost no pollution to the environment. At present, the titanium welded pipe industry has achieved rapid development and has been widely used in electric power, seawater desalination, water treatment equipment, air conditioning equipment, petrochemical and other industries.
