| 摘要 |
<p>1,173,127. Welding by fusion. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 9 Sept., 1968 [12 Sept., 1967], No. 42734/68. Heading B3R. [Also in Division C7] A filled welding wire for electric arc-welding of steel in a protective gas atmosphere, consists of an Fe based sheath containing slag forming constituents which contain 0-40% by weight zirconium dioxide and the balance consisting mainly or entirely of a mixture of zirconium silicate, potash feldspar and calcium carbonate having a composition within the area defined by A, B, C, D, E, F in the accompanying diagram where: and the slag-forming constituents form 6-10% by weight of the welding wire. The filler preferably contains 15-30% zirconium dioxide and may also contain Fe, Ni, Mo, Si, Mn or Zr.</p> |
