| 摘要 |
<p>A wheel and belt continuous casting machine employing a thin casting rim with a pair of cooperating mold side members surrounding the thin rim and with a thin flexible belt partially encircling the wheel for defining a casting cavity and high velocity coolant flow against the thin rim and thin belt for intensive heat removal. The thin casting rim is a guided "floating" rim which together with the pair of guided "floating" unattached mold side members form three of the mold surfaces, with the partially encircling thin belt providing the fourth mold surface, and coolant is flowed longitudinally at high velocity along the concave inner face of the floating rim to directly cool this rim and indirectly to cool the side mold members and also high velocity coolant is applied to the thin belt. The coolant can be applied over part of the concave circumference of the thin floating rim or over the full concave circumference of the rim. The floating arrangement of the mold defining surface enables the thin casting rim and mold side members to maintain an accurate alignment without buckling while the high velocity coolant maintains the thin rim at substantially constant temperature. Thus, the thin floating casting rim, floating mold side members and encircling belt provide accurate mold surfaces in which thermal cycling is minimized and heat transfer at the mold surfaces can be appropriately controlled by coatings on the thin rim and thin belt, providing long life of the operating components and giving flexibility for casting different metals and different alloys. Resilient seals are located between the floating rim and the rotating wheel structure, and convenient changing of mold components, such as belt, floating rim and mold side members is achieved, and in addition the user can conveniently change one or both cross section dimensions of the mold cavity so that the most appropriate proportions and size of the continuously cast section can be selected.</p> |
