| 摘要 |
1,070,040. Welding by fusion; making electrodes. EUTECTIC WELDING ALLOYS CORPORATION. March 22, 1965 [Aug. 31, 1964 ], No. 11972/65. Headings B3A and B3R. A tubular welding rod, e.g. an electrode or a filler rod for flame welding, comprises a core of material containing particles of refractory carbide in a steel tube composed of 0À15 - 0À3% C 0À15 0À4% Si 0À9 - 1À5% Mn balance Fe. The tube is formed from a strip and may be coated on one or both sides with Cu, Ni, St, or Cr. The tube preferably constitutes 15-40% by weight of the rod. The core consists of carbides of Cr, Mo, W, V, Ta, Nb, Zr, B, Ti or Si with 0-10% ferro-alloys of W, Si, Mn, B, Mo or Zr, and 0-5% deoxidizers, e.g. silico-manganese. The rod is made by forming a strip into a U -section by rolls and as the strip passes a filling station filling the strip simultaneously from hoppers containing the separate ingredients. The filled strip is closed by crimping and closing rolls and a cut-off device cuts and closes off the severed ends. |
