Long-service-life, safe and reliable forging cast iron die for pig casting machine and manufacturing method thereof

Abstract

The invention discloses a long-service-life, safe and reliable forging cast iron die for a pig casting machine and a manufacturing method of the long-service-life, safe and reliable forging cast iron die. The forging cast iron die is integrally formed based on a forging technology, at least two separating ribs lower than a high-temperature molten iron liquid face are arranged in the forging cast iron die, an inner die cavity of the forging cast iron die is divided into at least three forming die cavities by the separating ribs, a lap joint mouth Q used for being in lap joint with an adjacent forging cast iron die is arranged at the lower end of the forging cast iron die, a cast iron die tail P corresponding to the lap joint mouth at the lower end of the adjacent forging cast iron die is arranged a the upper end of the forging cast iron die, at least two overflow openings are formed in the lap joint mouth Q, and molten iron protection edges M1 and M2 and lug portions T1 and T2 connected with a chain plate are arranged on the two sides of the forging cast iron die. The poor cast condition metallographic structure and various forging defects of a forging forming cast iron die are avoided and overcome through the forging cast iron die, the thermal fatigue resisting strength of the cast iron die is effectively improved, the safe reliability of the cast iron die is improved, and the service life of the cast iron die is prolonged.

Description

technical field [0001] The invention belongs to a casting mold, and in particular relates to a casting mold on a casting machine for casting high-temperature molten iron into pig iron for foundry or pig iron for steelmaking. Background technique [0002] In the production process of the steel industry, cast iron equipment continuously casts the high-temperature molten iron smelted in the blast furnace into iron blocks (commonly known as bread iron). [0003] At present, its material of the cast iron mold that existing cast iron machine adopts is mostly cast iron or cast steel. The cast iron mold made of cast iron or cast steel is subject to repeated high and low temperature effects during use, and cracks are prone to occur inside the cavity and its ribs, and the cracks will gradually increase, and even cause the cast iron mold to break. Cast iron molds with large cracks must be replaced in time, and the maintenance workload of cast iron machine equipment is very heavy. The...

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Problems solved by technology

[0005] In order to overcome the above-mentioned disadvantages, the present invention changes the production mode of the cast iron mold of the casting structure manufactured by the casting process that has been adopted for a long time, solves the above-mentioned technical problems existing in the use of the existing cast iron mold in the cast iron machine, and proposes a cast iron mold for cast iron Machine's long-life safe and reliable forging cast iron mold and manufacturing method thereof

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