| 摘要 |
<p>1283206 Producing S. G. iron COMPAGNIE PECHINEY 30 Sept 1969 [2 Oct 1968] 47960/69 Heading C7D The iron is treated in succession with a spheroidizing agent containing Mg and B in which the weight percentage ratio Mg:B lies within the range 10:1 to 100:1 and an inoculating alloy containing Ba and Si in which the Si:Ba ratio lies in the range 3:1 to 60:1. As exemplified the alloys used are Fe-Si-Mg-B and Fe-Si-Ba.</p> |
