Hollow cast ingot inner hole casting device

Abstract

The invention discloses a hollow cast ingot inner hole casting device which comprises an ingot mold. A cooling forming mechanism is inserted into the ingot mold, a lifting mechanism is arranged above the cooling forming mechanism, a connecting pipe is arranged at the top end of the cooling forming mechanism, and a connecting seat is arranged at the top end of the connecting pipe. The top of the connecting seat is fixedly connected with the driving end of the lifting mechanism, an oscillator is arranged in the cooling forming mechanism, and a cooling mechanism is in fluid communication with the liquid inlet end of the cooling forming mechanism. By arranging the ingot mold with the mounting hole in the bottom, cooperating with the crystallizer and cooperating with the lifting mechanism, a metal ingot with a hollow structure can be cast, casting defects are remarkably reduced, troubles caused by later secondary transferring and drilling are avoided, metal material waste caused by drilling is reduced, the metal smelting amount is effectively reduced, the purposes of energy conservation and emission reduction are achieved, production efficiency is improved, ingot casting quality is improved, and the problem that production cost is increased is solved.

Description

technical field [0001] The invention relates to the technical field of metal or alloy ingot casting. Specifically, it is a device for casting the inner hole of a hollow ingot. Background technique [0002] Metal and alloy pipes are widely used in thermal pipelines, pulverized coal transportation, oil or natural gas transportation, slurry transportation and corrosive chemical raw material transportation. Most of these pipes have the characteristics of large diameter, thick wall and long length, and some are also To withstand internal pressure, corrosion, wear, etc., the quality requirements of the pipeline are very high, and it is difficult to adopt the conventional welding forming process after the plate is crimped. [0003] In the prior art, a solid ingot is usually cast, and then punched by a drilling machine or pressure pierced and then inserted into a mandrel for extrusion. The cast blank must also meet the requirements of large diameter and large volume, and it is easy...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the cast solid ingot is usually used, and then punched by a drilling machine or pressure pierced and then inserted into a mandrel for extrusion. Satisfied with large diameter and large volume, when the large diameter ingot is solidified, it is easy to form serious casting defects, such as shrinkage cavity, shrinkage porosity, inclusions, etc., and due to the slow cooling rate inside the ingot, coarse grains and serious uneven structure occur Phenomenon, thus affecting the pass rate of ingots, on the other hand, using a drilling machine to drill holes will lose a large amount of alloy materials, and the piercing process is extremely difficult for high-strength alloys, and the quality and volume of solid ingots are large, and transportation after casting , The secondary drilling process needs to invest a lot of manpower and material resources, resulting in reduced production efficiency, unstable casting quality, and increased production costs.

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