Suspension type cold crucible continuous melting and casting and directional solidification device

Abstract

The invention provides a suspension type cold crucible continuous melting and casting and directional solidification device. Heat-resisting light titanium-aluminum alloy with high strength and high tenacity is especially required in the aerospace shipping industry. However, problems that a supplied alloy liquid is low in degree of superheat and the directional control of solidification structure is difficult exist in prior vertical through type cold crucible directional solidification devices. According to the suspension type cold crucible continuous melting and casting and directional solidification device, a trapezoid boss is annularly arranged on the inner wall of a water-cooling copper crucible, an inductance coil is winded on the outside of the cold crucible, the trapezoid boss is placed in an induction zone of the coil, a master batch rod is melted on the upper portion of the boss, and a billet with a directional solidification structure is prepared on the lower portion of the boss. The suspension force in an axis direction of the crucible during metal melting can be increased by the aid of the boss, the contact of metal melt with cold crucible wall can be effectively avoided, the lateral heat dissipation effect of crucible cold wall can be reduced, and the degree of superheat of the alloy liquid and the directionality of the prepared billet solidification structure are improved.

Description

technical field [0001] The invention relates to a cold crucible directional solidification casting device. Background technique [0002] 1. Background and significance of the invention [0003] Entering the 21st century, the aerospace industry continues to flourish, and traditional materials and material processing technologies can no longer meet people's needs. The research on new materials and new materials processing technology is becoming more and more important. Reducing the weight of the engine and structural parts and increasing the combustion temperature of the engine are effective ways to improve the efficiency of aerospace vehicles. At present, aeroengines generally use nickel-based superalloys and titanium alloys. The service temperature of titanium alloy reaches 600 ℃, and the service temperature of nickel-based superalloy is close to 1100 ℃. The high density of nickel-based superalloys and the low working temperature of titanium alloys have greatly restricte...

AI Technical Summary

Problems solved by technology

[0039] Aiming at the high-strength, high-toughness heat-resistant light-weight titanium-aluminum alloy that is particularly required in the aerospace and shipbuilding industry, and the existing up-and-down straight-through cold crucible directional solidification device has the problems of low superheat of the supplied alloy liquid and difficult directional control of the solidification structure, the present invention provides A suspended cold crucible continuous casting and directional solidification device, which can better solve the above problems

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