| 摘要 |
<p>The invention concerns a method for the aluminothermic welding of rails, comprising the steps of: triggering an aluminothermic reaction in a crucible (2), casting the metal derived from said reaction into the mould (1), so as to fill the moulding cavity starting from the foot of the rail, after filling of the moulding cavity, triggering a second aluminothermic reaction above the rail head, and casting the metal derived from said reaction into said moulding cavity in the region of the rail head. The invention also concerns a mould (1) adapted to fit over the two rail ends to form a moulding cavity (10), comprising a crucible (4) arranged above the region of the rail head so that it is fed with molten metal from the moulding cavity (10) via a secondary channel (42).</p> |
