High-toughness and anti-hydrogen induction sulfide stress corrosion crack metal powder flux-cored wire and preparation method

The invention discloses a high-toughness and anti-hydrogen induction sulfide stress corrosion crack metal powder flux-cored wire which comprises outer skin and a flux core; the outer skin is a low-carbon steel thin strip; the weight of the flux core accounts for 12 percent to 20 percent of the total weight of the wire; and the diameter of the flux core is 1.20mm to 2.4mm. According to the wire welding process, the process performance and physical and chemical properties are good, the amount of slag after welding is effectively reduced, welding of a plurality of layers is carried out without clearing the slag, so that the overall performance and the welding efficiency of a welding seam are effectively improved, the performance of the welding process is good, the electric arc is stable, splashing seldom occurs, the welding seam has attractive appearance, such purposes as vertical downward welding can be achieved through short-circuit transition; and good mechanical properties and the anti-hydrogen induced crack purpose are achieved.