A kind of forging forming die and its assembling method

Abstract

The invention discloses a forging molding die and an assembly method thereof, comprising: a lower die, an upper die pressing plate, an elastic part for blank-holding force; a middle die fixing plate, primary bending legs, and secondary bending legs; an upper die pressing plate presses down , under the guidance of the through hole of the primary outrigger and the through hole of the secondary outrigger, the first bending outrigger is forged and bent on both sides of the blank. When it is between 30° and 45°, the secondary bending leg is in contact with the deformed arc end of the billet to bear the deformation resistance of the billet after deformation. The secondary bending leg prevents the irregular bending deformation of the billet during forging, so that the billet can The entire bottom of the upper part is flattened to form a forging, which solves the problem that the bottom of the forging is difficult to level due to the high deformation resistance of the forging, and then the forging quickly detaches from the surface of the lower mold, which solves the problem that the lower mold is a deep closed mold. After the forging is formed It is a relatively difficult problem to release the mold.

Description

technical field [0001] The invention relates to a forging forming die and an assembling method thereof, belonging to the technical field of forging processing devices. Background technique [0002] When forging 316LN austenitic stainless steel forgings, the forging structure is as follows Figure 4 As shown in the figure, when the forging is under force, the deformation resistance of austenitic stainless steel is large, reaching 266~532Mpa, and the deformation resistance is mainly concentrated in the deformation arc end of the billet, such as image 3 As shown, the grain size is easy to grow at high temperature and other factors, the bottom of the sheet will be bent first during the bending process to form an arc-shaped bottom, such as figure 2 As shown, the mold and the blank are separated, and it is difficult for the mold to effectively control the deformation of the blank, and the center is prone to shift. After the forging is bent and deformed, in the final forming stag...

AI Technical Summary

Problems solved by technology

[0002] When forging and forming 316LN austenitic stainless steel forgings, the structure of the forgings is as follows: Figure 4 As shown, when the forging is stressed, due to the large deformation resistance of austenitic stainless steel, reaching 266~532Mpa, the deformation resistance is mainly concentrated at the deformation arc end of the billet, as shown in image 3 As shown, the grain size is easy to grow at high temperature and other factors, the bottom of the sheet will be bent first during the bending process to form a curved bottom, such as figure 2 As shown, the mold and the blank are separated, it is difficult for the mold to effectively control the deformation of the blank, and center deviation is prone to occur. After the bending deformation of the forging is completed, in the final forming stage, because the bottom is arc-shaped, it is necessary to apply pressure from the upper die to make the entire bottom change. Flat, as the temperature decreases, the deformation resistance of forgings made of austenitic materials is very large, and the bottom of the forgings is difficult to level off. Since the lower die is a closed die with a deep depth, it is difficult to release the forging after forming

Images