An ultra-low hydrogen seamless submerged arc flux-cored welding wire for steel with a yield strength of 690mpa
A flux-cored wire, yield strength technology, applied in welding media, welding equipment, welding/cutting media/materials, etc., to achieve sufficient deoxidation, reduce the content of inclusions, and reduce the effect of diffusible hydrogen
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[0015] In order to make the content of the present invention more obvious and understandable, the present invention will be described in detail below in conjunction with specific examples.
[0016] An ultra-low hydrogen seamless submerged arc flux-cored wire for steel with a yield strength of 690MPa, consisting of a sheath and a core powder, the sheath is made of a low-carbon steel strip, and the filling rate of the core powder in the flux-cored wire is 10- 15%, the drug core powder is composed of the following raw materials according to the mass percentage: marble 8-12%, fluorite 4-8%, metal nickel 25-30%, metal chromium 2-4%, molybdenum iron 7-9%, electrolytic manganese 12-16%, ferrosilicon 1-3%, ferro-titanium 3-5%, ferro-boron 2-4%, potassium titanate 2-3%, potassium fluoride 1-3%, sodium fluoride 1-3%, The balance is iron powder.
[0017] The design basis of the seamless submerged arc flux-cored welding wire flux core of the present invention is as follows:
[0018] The...
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