High-toughness ledeburite malleable cast iron

Abstract

The invention belongs to the technical field of malleable cast iron, and particularly relates to high-toughness ledeburite malleable cast iron. The hot melting device comprises a hot melting box and an impurity removing mechanism; a box cover is mounted on the top end surface of the hot melting box; a supercharger is installed on the upper surface of the box cover and electrically connected with the controller through a wire; a cavity in the hot melting box is designed to be inclined; and the bottom end surface of the hot melting box is fixedly connected with a motor; a lead screw is fixedly connected to a driving shaft of the motor. The device is mainly used for solving the problems that according to an existing hot melting device, a raw material is usually placed in the hot melting device for hot melting, then gas doped in a raw material is exhausted in a stirring mode, however, the gas doped in a raw material cannot be completely exhausted in the mode, a cavity exists in poured malleable cast iron, and the casting quality of the malleable cast iron is influenced; and meanwhile, impurities in molten iron need to be manually removed in the hot melting process of the raw material,so that a certain danger is caused to workers, and meanwhile, the impurities are not thoroughly removed.

Description

technical field [0001] The invention belongs to the technical field of malleable cast iron, in particular to a high-toughness ledeburite malleable cast iron. Background technique [0002] Cast iron is a general term for alloys mainly composed of iron, carbon and silicon. Cast iron can be divided into: gray cast iron, white cast iron, malleable cast iron, nodular cast iron, vermicular cast iron and alloy cast iron. Malleable cast iron White cast iron is a kind of high-strength and tough cast iron obtained by graphitization annealing. It has high strength, plasticity and impact toughness, and can partially replace carbon steel. Compared with gray cast iron, malleable cast iron has better strength and plasticity, especially better low-temperature impact performance, and better wear resistance and vibration damping than ordinary carbon steel. Because of its certain plasticity and toughness, this kind of cast iron is commonly known as malleable iron, horse iron, ductile cast i...

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Problems solved by technology

[0006] In order to make up for the deficiencies in the prior art, the present invention proposes a high-toughness ledeburite malleable cast iron. The present invention is mainly used to solve the problem that the current hot-melt device often puts raw materials into the hot-melt device for hot-melt, and then uses stirring However, this method cannot completely discharge the doped gas in the raw material, so that there are cavities in the malleable cast iron after pouring, and at the same time, it is necessary to manually remove the iron in the process of melting the raw material. The removal of impurities in the liquid will cause certain dangers to the staff, and the problem of incomplete removal of impurities

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