Casting device and casting method for large gear steel cast ingot

Abstract

The invention relates to a casting device and a casting method of a large gear steel cast ingot, belongs to the technical field of casting devices and casting methods, and solves the macroscopic defects and structure defects of large castings. The casting method comprises steps: a crystallization rod is fixedly arranged on a lifting bracket, connected box bodies are lifted to a preset height through a guide column; one part of the crystallization rod extends into a crystallizer, hot air and cold air are used for preheating or cooling the crystallizer, it is guaranteed that the first part of molten metal can submerge the lower end of the crystallization rod in the casting process, the crystallization rod is tightly connected with the first part, and casting is repeated for multiple times to obtain a cast ingot meeting the requirement.

Description

technical field [0001] The invention belongs to the technical field of casting devices and casting methods, and in particular relates to a casting device and a casting method for large gear steel ingots. Background technique [0002] For the casting of large ingots, the prior art has the following deficiencies: [0003] 1. Use water cooling or air cooling to cool the castings after casting. If the water cooling equipment integrates the preheating and heat dissipation processes required by the mold, the water cooling equipment will be too large; [0004] 2. Use water cooling for cooling, and the chilling effect of water will affect the service life of casting equipment to a certain extent; use air cooling for cooling, the cooling time is longer, and the production efficiency is not enough to meet modern production; [0005] 3. The traditional large-scale ingot forming equipment adopts a one-time molding method for casting molding. The microstructure of the ingot formed by th...

AI Technical Summary

Problems solved by technology

[0003]1. Use water cooling or air cooling to cool the castings after casting. If the water cooling equipment integrates the preheating and heat dissipation processes required by the mold, water cooling equipment is too big;

[0004]2. Using water cooling for cooling, the chilling effect of water will affect the service life of casting equipment to a certain extent; using air cooling for cooling, the cooling time is longer, and the production Efficiency is not enough for modern production;

[0005]3. Traditional large-scale ingot forming equipment adopts a one-time molding method for casting molding. The microstructure of the ingot formed by this method has certain defects, which will affect the subsequent heat treatment. cause great difficulty;

[0006]4. Existing large-scale ingots adopt the method of partial forming during casting, but there is no step of fusing the formed part and the part to be formed, resulting in two parts The microstructure at the interface is not tightly bonded, and may break during the production process, resulting in production accidents

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