US 2008/0156784 A1 · SOLID WIRE

Abstract

A solid wire contains in mass percent C 0.005 to 0.080%, Si 0.30 to 1.20%, Mn 1.15 to 1.65%, S 0.050 to 0.200%, P 0.017% or less, O 0.0070% or less, and N 0.0050% or less, wherein C+(P*5)≦0.135 mass percent is satisfied, and the remainder includes Fe and impurities, and the content of each of Ti, B, Cr, Ni, Nb, V, Zr, La and Ce as the impurities is controlled to be a certain content or less, and the amount of adhered oil on a surface of the relevant solid wire is controlled to be 1.2 g or less per wire of 10 kg. According to such a configuration, while increase in welding cost is controlled to the minimum, stability of wire feed, burn-through resistance, undercut resistance, and crack resistance becomes excellent, slag and spatter becomes hard to be generated, hardness of weld metal becomes equal to or higher than that of base metal, and brittle fracture becomes hard to occur.

Claims7

Dependent claims

A solid wire used for arc welding, comprising:

C 0.005 to 0.080 mass percent,
Si 0.30 to 1.20 mass percent,
Mn 1.15 to 1.65 mass percent, and
S 0.050 to 0.200 mass percent;
and
the solid wire being controlled to contain
P 0.017 mass percent or less,
O 0.0070 mass percent or less, and
N 0.0050 mass percent or less respectively,
in which (content of C)+{(content of P)*5}≦0.135 mass percent is satisfied, and
the solid wire being further controlled to contain as impurities Ti 0.15 mass percent or less, Zr 0.10 mass percent or less, B 0.0050 mass percent or less, and Cr, Ni, Nb, V, La and Ce 0.20 mass percent or less respectively,
wherein amount of oil adhered on a surface of the relevant solid wire is controlled to be 1.2 g or less per wire of 10 kg.

9 more elements

Dependencies are inferred from the claim text.

Solid wire

Life of this patent

Solid wire

Life of this patent

Abstract

Claims7