| 摘要 |
PURPOSE:To form a reaction chamber which is lightweight and is not attacked by Mg by using a thin sheet consisting of an austenitic stainless steel to constitute a reaction chamber of a device which reduces chloride of a high-melting metal by Mg and lining the inside surface thereof with the weld beads consisting of a coarbon steel or ferritic stainless steel. CONSTITUTION:A device which produces sponge-like Zr or Ti by reducing the chloride of a high-melting metal such as Zr, Ti or the like by metallic Mg is constituted of a reaction chamber 10 and a condensing chamber 40 connected by an intermediate connecting part 30. The chamber 10 is formed of a thin sheet of an austenitic stainless steel having high resistance strength to heat to reduce the weight of the chamber 10. Since the austenitic stainless steel is liable to be attacked by molten Mg, a lining layer 10a consisting of a carbon steel or ferritic austenitic steel which is not attacked by the molten Mg is formed by weld beads on said inside surface. The lightweight reaction chamber for reduction is formed without being attacked by Mg.
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