| 摘要 |
Composite calcium materials to be used for welding or refining steel, nickel, nickel alloy or iron alloy, which are produced by cladding a sheath of aluminum, iron or alloys thereof and a core consisting of 1. A MIXTURE OR AN ALLOY OF CALCIUM OR AN ALLOY THEREOF WITH AT LEAST ONE ELEMENT OF ALUMINUM AND RARE EARTH METALS, 2. A MIXTURE OF CALCIUM OR AN ALLOY THEREOF WITH A FLUX OF SILICATES, OXIDES OR HALIDES OF ALKALINE EARTH METALS, OR 3. A MIXTURE CONSISTING OF THE ABOVE DESCRIBED MIXTURE OR ALLOY (1) WITH THE FLUX AS DESCRIBED IN THE ABOVE ITEM (2).
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