CN218611507U

CN218611507U - Multidirectional die forging forming die of valve forging for petroleum and petrochemical equipment

Info

Publication number: CN218611507U
Application number: CN202223136472.9U
Authority: CN
Inventors: 朱玉龙; 徐岳强; 朱小明; 曹海平; 汪福祥
Original assignee: Jiangyin Longyu Forging And Stamping Co ltd
Current assignee: Jiangyin Longyu Forging And Stamping Co ltd
Priority date: 2022-11-25
Filing date: 2022-11-25
Publication date: 2023-03-14
Anticipated expiration: 2032-11-25

Abstract

The utility model relates to a multidirectional die forging forming die of valve forging for petroleum and petrochemical equipment for producing valve forging, it includes upper die, split type annular mould and lower mould that from top to bottom sets up, upper die and split type annular mould are the annular mould; the outer diameter of the split type annular die is consistent with the inner diameter of the upper die, the split type annular die is arranged in the upper die through hole of the upper die, and the lower die is arranged below the split type annular die; the lower die comprises an integrated upper ring die and a lower ring die, the upper ring die is arranged in an upper die through hole of the upper die and supported below the split type ring die, and the lower ring die is arranged below the upper die; the split type annular die comprises at least two equally-divided slicing units. The utility model discloses forge the recess, make forging weight little, saved raw and other materials to the appearance is round and neat, and is high with inside and outside footpath concentricity, and machining efficiency promotes.

Description

Multidirectional die forging forming die of valve forging for petroleum and petrochemical equipment

Technical Field

The utility model relates to a forge mould technical field, especially relate to a multidirectional die forging forming die of valve forging for petroleum and petrochemical equipment.

Background

The valve body forged piece with the main flange is mainly applied to industries such as nuclear power, thermal power, petrochemical industry and the like, and at present, two forming modes, namely common die forging and multi-directional die forging of horizontal die parting, are adopted for the valve body forged piece. During ordinary die forging, flash exists on a die parting surface, a horizontal hole and a vertical hole cannot be forged at the same time, the weight of a forged piece is large, and more materials are wasted; the multi-directional die forging of the horizontal die-splitting method can forge a horizontal hole and a vertical hole, but cannot forge a main flange. The valve forging for petroleum and petrochemical equipment is shown in figure 1, flanges are arranged at two ends of the valve forging, a groove is formed in the middle of the flange, a forging blank is annular when free forging is carried out, and the groove in the middle of the flanges at the two ends cannot be formed by forging, so that the workpiece blanking according to figure 1 needs 445Kg, the weight of parts after the forging is machined is large, the subsequent process is complex, and the production efficiency is low.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome above-mentioned not enough, provide a multidirectional die forging forming die of valve forging for petroleum and petrochemical equipment, save raw materials improves machining efficiency.

The purpose of the utility model is realized like this:

a multi-directional die forging forming die for a valve forging for petroleum and petrochemical equipment is used for producing the valve forging and comprises an upper die, a split type annular die and a lower die which are arranged from top to bottom, wherein the upper die and the split type annular die are both annular dies, an upper die through hole is formed in the upper die, and an annular die through hole is formed in the split type annular die; the outer diameter of the split type annular die is consistent with the inner diameter of the upper die, the split type annular die is arranged in the upper die through hole of the upper die, and the lower die is arranged below the split type annular die; the lower die comprises an integrated upper ring die and a lower ring die, the sections of the upper ring die and the lower ring die are in L shapes which are bilaterally symmetrical, lower die through holes are formed in the upper ring die and the lower ring die, the upper ring die is arranged in the upper die through hole of the upper die and supported below the split ring die, and the lower ring die is arranged below the upper die; the split type annular die comprises at least two equally-divided piece units, and after forging forming, the split type annular die is located in grooves on two sides of a valve forging piece, so that demolding is facilitated.

Further, the inner wall of the upper die and the opposite side of the upper ring die of the lower die are provided with a first inclined surface, the first inclined surface inclines towards the outer wall of the upper die, the outer wall of the upper ring die and the opposite side of the inner wall of the upper die are provided with a second inclined surface, the second inclined surface inclines towards the inner wall of the lower die, a gap is reserved between the first inclined surface and the second inclined surface, and the lower die can be conveniently separated.

Furthermore, the diameter of the upper end of the lower die through hole is matched with that of the annular die through hole, and the diameter of the lower end of the lower die through hole is smaller than that of the upper end of the lower die through hole.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model is composed of an upper die, a split type annular die and a lower die, a groove is forged, so that the weight of a forge piece is small, raw materials are saved, the appearance is round and round, the concentricity of the inner diameter and the outer diameter is high, the machining efficiency is improved, and the mechanical property is better; the split type annular die is of a three-piece split type, and the split type annular die can be conveniently and smoothly taken out after two sets of end forming flanges are formed.

Drawings

FIG. 1 is a schematic product structure diagram of a valve forging.

FIG. 2 is a schematic illustration of a forging for a valve forging.

Fig. 3 is a schematic structural diagram of the present invention.

Fig. 4 is a schematic structural view of the utility model after the lower die is removed.

Fig. 5 is a sectional view of the split ring die of the present invention.

Fig. 6 is a top view of the split ring die of the present invention.

Wherein:

the die comprises a valve forge piece 1, an upper die 2, an upper die through hole 21, a first inclined plane 22, a split type annular die 3, a slicing unit 31, an annular die through hole 32, a lower die 4, a lower die through hole 41 and a second inclined plane 42.

Detailed Description

For better understanding of the technical solution of the present invention, the following detailed description will be made with reference to the accompanying drawings. It should be understood that the following embodiments are not intended to limit the embodiments of the present invention, but only the embodiments of the present invention. It should be noted that the description of the positional relationship of the components, such as the component a is located above the component B, is based on the description of the relative positions of the components in the drawings, and is not intended to limit the actual positional relationship of the components.

Example 1:

referring to fig. 2-6, fig. 3 is a schematic structural diagram of a multidirectional die forging forming die for a valve forging for a petroleum and petrochemical device. As shown in the figure, the product produced by the multidirectional die forging forming die for the valve forge piece for the petroleum and petrochemical equipment in the embodiment 1 is the valve forge piece 1, which comprises an upper die 2, a split type annular die 3 and a lower die 4 which are arranged from top to bottom, wherein both the upper die 2 and the split type annular die 3 are annular dies, an upper die through hole 21 is formed in the upper die 2, and an annular die through hole 32 is formed in the split type annular die 3;

the outer diameter of the split type annular die 3 is consistent with the inner diameter of the upper die 2, the split type annular die 3 is arranged in an upper die through hole 21 of the upper die 2, and a lower die 4 is arranged below the split type annular die 3;

the lower die 4 comprises an upper ring die and a lower ring die which are integrated, the cross sections of the upper ring die and the lower ring die are L-shaped and are bilaterally symmetrical, lower die through holes 41 are formed in the upper ring die and the lower ring die, the upper ring die is arranged in an upper die through hole 21 of the upper die 2 and supported below the split type ring die 3, and the lower ring die is arranged below the upper die 2.

The split type annular die 3 is an annular die consisting of three same separating units 31, and after forging forming, the split type annular die 3 is positioned in grooves on two sides of the valve forging 1, and is difficult to demould if being a whole, and the split type annular die 3 convenient to take out smoothly is set as a split type.

The side, opposite to the upper ring die, of the inner wall of the upper die 2 and the lower die 4 is provided with a first inclined surface 22, the first inclined surface 22 inclines towards the outer wall of the upper die 2, the side, opposite to the inner wall of the upper die 2, of the outer wall of the upper ring die is provided with a second inclined surface 42, the second inclined surface 42 inclines towards the inner wall of the lower die 4, a gap is reserved between the first inclined surface 22 and the second inclined surface 42, and the lower die 4 can be conveniently released.

The diameter of the upper end of the lower die through hole 41 is matched with that of the annular die through hole 32 and is 385mm, and the diameter of the lower end of the lower die through hole 41 is slightly smaller than that of the upper end thereof and is 375mm.

The forging process flow of the valve shell forging 1 produced by the utility model comprises the following contents:

firstly, forging at 1220 ℃ and finishing at 850 ℃ on a first fire, discharging steel ingots out of a furnace, chamfering, flattening risers and then chopping the risers;

upsetting to 300mm high, drawing 280mm octagonal, upsetting to 450mm high after rounding, forging ratio is made, the forging ratio is not less than 4, rounding, blank discharging is carried out, and then punching is carried out to be 360mm;

step three, performing second heating, wherein the initial forging temperature is 1220 ℃ and the final forging temperature is 850 ℃, assembling the upper die 2, the split type annular die 3 and the lower die 4, and then feeding the blank into a die to perform upsetting forming on one end of the flange;

step four, performing third heating, wherein the initial forging temperature is 1220 ℃, the final forging temperature is 850 ℃, removing the lower die 4, integrally turning over the upper die 2, the split type annular die 3 and the workpiece, turning around and upsetting the flange at the other end, and finally punching and forming;

and step five, taking out the three split units 31 of the split annular die 3 respectively, so as to facilitate demoulding.

The blanking weight of the forging of the embodiment 1 is 370Kg, and each forging can save 75Kg of raw material.

The above is only a specific application example of the present invention, and does not constitute any limitation to the protection scope of the present invention. All the technical solutions formed by equivalent transformation or equivalent replacement fall within the protection scope of the present invention.

Claims

1. The utility model provides a multidirectional die forging forming die of valve forging for petrochemical equipment for production valve forging (1), its characterized in that: the split type ring die comprises an upper die (2), a split type ring die (3) and a lower die (4) which are arranged from top to bottom, wherein the upper die (2) and the split type ring die (3) are both ring dies, an upper die through hole (21) is formed in the upper die (2), and a ring die through hole (32) is formed in the split type ring die (3); the outer diameter of the split type annular die (3) is consistent with the inner diameter of the upper die (2), the split type annular die (3) is arranged in an upper die through hole (21) of the upper die (2), and a lower die (4) is arranged below the split type annular die (3); the lower die (4) comprises an integrated upper ring die and a lower ring die, the sections of the upper ring die and the lower ring die are in L shapes which are bilaterally symmetrical, lower die through holes (41) are formed in the upper ring die and the lower ring die, the upper ring die is arranged in an upper die through hole (21) of the upper die (2) and supported below the split type ring die (3), and the lower ring die is arranged below the upper die (2); the split type annular die (3) comprises at least two equally-divided slicing units (31), and after forging forming, the split type annular die (3) is located in grooves in two sides of the valve forging (1) to facilitate demolding.

2. The multi-directional die forging forming die for the valve forging for the petroleum petrochemical equipment, according to claim 1, is characterized in that: go up the inner wall of mould (2) and the relative one side of the last ring mould of lower mould (4) and set up first inclined plane (22), first inclined plane (22) are to the slope of mould (2) outer wall, the outer wall of going up the ring mould sets up second inclined plane (42) with the relative one side of the inner wall of last mould (2), and second inclined plane (42) are to lower mould (4) inner wall slope, leave the clearance between first inclined plane (22) and second inclined plane (42), be convenient for lower mould (4) and deviate from.

3. The multi-directional die forging forming die for the valve forging for the petroleum petrochemical equipment, according to claim 1, is characterized in that: the upper end diameter of the lower die through hole (41) is matched with the annular die through hole (32), and the lower end diameter of the lower die through hole (41) is smaller than the upper end diameter thereof.