Hot-forging die lower die with internal cooling function and cooling method thereof

Abstract

The invention discloses a hot-forging die lower die with an internal cooling function and a cooling method thereof. The hot-forging die lower die comprises a lower die frame, a concave die supportingcushion block mechanism, a concave die, a concave die fixing mechanism and a cooing system. The cooling method comprises the steps that water enters the cooling system, is sprayed out from water spraying holes of a lower ejection rod in a die closing state, and flows out from a side hole of a lower first cushion block; after an upper die is lifted up, the water flows out from an air hole formed between the lower first cushion block and a lower second cushion block; after the die is opened, a forge piece is carried away by a manipulator, and the water directly flows into a middle die cavity ofthe concave die; a blank is installed in the concave die through the manipulator, the redundant water in the concave die is drained out through the blank, and the water in the through hole of the lower first cushion block is drained through the side hole of the lower first cushion block; and the blank is moved downwards, the side hole of the lower first cushion block is blocked by an adjusting block, and the water in the through hole of the lower first cushion block is drained out through an air hole formed between the lower first cushion block and a lower T-shaped cushion block. According tothe hot-forging die lower die with the internal cooling function and the cooling method thereof, the concave die is cooled fully, timely, efficiently and comprehensively.

Description

technical field [0001] The invention relates to a lower die of a hot forging die with an internal cooling function and a cooling method thereof, belonging to the technical field of hot forging cooling. Background technique [0002] In traditional hot forging, the mold needs to be heated to about 200°C, and the mold is lubricated by spraying graphite suspension on the surface of the mold. After evaporation, the residual graphite acts as a lubricating medium at high temperature. The disadvantage of this lubrication method is that there will be a large amount of graphite vapor, which will cause environmental pollution in the workshop. In the hot forging form with a large amount of water, the mold does not need to be heated, but it needs to be cooled in time to keep the mold at room temperature during the production process, and the residual water on the surface of the mold during rapid forming is instantly vaporized into water vapor for lubrication. In time, the die and forgin...

AI Technical Summary

Problems solved by technology

The disadvantage of this lubrication method is that there will be a large amount of graphite vapor, which will cause environmental pollution in the workshop

In the hot forging form with a large amount of water, the mold does not need to be heated, but it needs to be cooled in time to keep the mold at room temperature during the production process, and the residual water on the surface of the mold during rapid forming is instantly vaporized into water vapor for lubrication. In time, the die and forging will have a phenomenon of bonding and a sharp increase in ejection force, which greatly reduces the life of the die, and sometimes even causes the product to fail to form. Therefore, it is necessary to cool in the lower die and upper die in time.

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