Conical die for forge piece

Abstract

The invention discloses a conical die for a forge die. The conical die comprises a punch and a leaking plate, the punch is composed of a first punch body, a second punch body and a third punch body, and the leaking plate is provided with a through hole corresponding to the punch; the leaking plate is prepared from, by mass, 0.05-0.2% of C, 1-3% of Mn, 0.5-1.8% of Si, 0.01-0.5% of Al, 0.001-0.015%of N, 0.1-0.25% of Ti, 0.001% of Ti, 0-0.25% of Cr, 0-0.35% of Mo and the balance Fe and impurities. The conical die is reasonable in design and simple in structure and manufacturing technology, the allowance of the forge die can be reduced, the consumption of materials is reduced, the performance of the forge die is improved, the phenomenon of cracking of welding seams does not exist, and the requirement of the design standard is met.

Description

technical field [0001] The invention relates to a die, in particular to a cone-shaped die for forgings. Background technique [0002] The front cone wall part of a gas turbine is approximately cone-shaped. The maximum outer diameter of the part is Ф536mm, the minimum inner diameter is Ф205mm, and the height is 357mm. The cross-sectional shape of the forging. It is extremely difficult to form this kind of conical cylindrical forging with high height, and the amount of deformation is not easy to control. Usually this kind of forging is designed as a circular forging with a rectangular cross-section, but in the first batch of production, the plasticity and impact toughness of the body of the forging with this design method after quenching and tempering are very low, which cannot meet the requirements of the standard, and The forging allowance is large, and the material waste is serious; in the subsequent production, the process method of forging in three stages and finally wel...

AI Technical Summary

Problems solved by technology

It is extremely difficult to form this kind of conical cylindrical forging with high height, and the amount of deformation is not easy to control

Usually this kind of forging is designed as a circular forging with a rectangular cross-section, but in the first batch of production, the plasticity and impact toughness of the body of the forging with this design method after quenching and tempering are very low, which cannot meet the requirements of the standard, and The forging allowance is large, and the material waste is serious; in the subsequent production, the process method of forging in three stages and finally welding is adopted. Although this method reduces material waste to a certain extent, there are serious problems in the actual production process. Technical problem: The weld seam is cast structure, its impact toughness is low, and the phenomenon of weld seam cracking is very easy to occur

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