Aluminum-stainless steel conductor (third) rail and method

摘要

A method of manufacturing an aluminum power transmission rail product with a metallurgically bonded stainless steel cap comprises providing molten aluminum in a tundish; providing a roll formed stainless steel wear cap; pretreating and preheating the stainless steel cap, then introducing that cap into the tundish; co-casting the aluminum and cap through one or more dies; and tensioning the stainless steel cap at an exit of the casting die and rapidly cooling the same. An aluminum-stainless composite product is also disclosed.

主权项

1. A method of manufacturing an aluminum power transmission rail product with a stainless steel cap metallurgically bonded thereto, said method comprising:
(a) providing molten aluminum in a tundish; (b) providing a roll formed stainless steel wear cap; (c) pretreating and preheating the stainless steel cap, then introducing the stainless steel cap into the tundish; (d) co-casting through one or more casting dies molten aluminum from the tundish with the stainless steel cap; and (e) tensioning the stainless steel cap at an exit of the casting die and rapidly cooling the co-casting to produce the transmission rail product.