Determination of welding preheating temperature for thick plates of SA516GR70, 110 mm thick
Thread Content
Welding is being carried out on the embedded components inside the boiler drum shell. The welded workpiece is a cylinder made of SA516GR70 with a thickness of 110; there is also a plate for embedded components, made of material 20 with a thickness of 6. The welding length is approximately 5 meters, the weld height is 4 mm, and it is performed as double-sided manual welding. Currently, for the butt welding of the cylinder shells in the WPS squadron, the preheating temperature before longitudinal seam welding is 100°C. Now, preheating to 100°C before welding the cylinder shells and the steel plates of the embedded components is also required. Is this requirement necessary?
This post was last edited by Fiberglass Grating Mesh on 2016-4-15 at 15:52. Please give your support first; thank you
Which organization’s, OP? I’m not going into detail about welding. If you need 110-mm-thick SA516GR70 next time, remember to contact me; I can provide samples in advance for welding process evaluation
Steel plates with a thickness of 40-120 mm made of SA516Gr70 are our specialty; feel free to ask for more details. We can provide relevant technical materials for your reference