CN112705658A - Arc-shaped forge piece machining system and machining method - Google Patents
Arc-shaped forge piece machining system and machining method Download PDFInfo
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- CN112705658A CN112705658A CN202011584303.4A CN202011584303A CN112705658A CN 112705658 A CN112705658 A CN 112705658A CN 202011584303 A CN202011584303 A CN 202011584303A CN 112705658 A CN112705658 A CN 112705658A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/02—Die forging; Trimming by making use of special dies ; Punching during forging
- B21J5/025—Closed die forging
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/002—Hybrid process, e.g. forging following casting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J9/00—Forging presses
- B21J9/02—Special design or construction
- B21J9/06—Swaging presses; Upsetting presses
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
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Abstract
The invention discloses an arc-shaped forge piece processing system and a processing method, wherein the processing system comprises a forge piece machine for processing an arc-shaped forge piece and a cold deformation die for carrying out cold deformation and straightening on the arc-shaped forge piece, and a die cavity with the same shape and size as the finished arc-shaped forge piece is arranged in the cold deformation die. According to the arc-shaped forge piece processing system provided by the invention, the cold deformation die is additionally arranged, the die cavity of the cold deformation die is adopted to limit the appearance of the arc-shaped forge piece, so that the stress of the arc-shaped forge piece is stable, meanwhile, the die cavity is preset with the required arc-shaped size, namely the size of the finished arc-shaped forge piece, the arc-shaped forge piece is further ensured to deform towards the direction of the product size meeting the requirement in the cold deformation process, the technical bottleneck that the arc-shaped forge piece is difficult to machine deform and straighten is effectively solved, qualified products are produced, and remarkable economic benefits are obtained.
Description
Technical Field
The invention relates to the field of arc-shaped piece forging, in particular to an arc-shaped forging piece machining system and method.
Background
For the arc-shaped forge piece, the arc-shaped forge piece is curved in an arc shape, the diameter of the arc is 3-4 meters, the length of the arc is 2.5-3.5 meters, the length of the whole arc is 2.5-3.5 meters, protruding ribs exist on the whole arc, the cross section of the arc-shaped forge piece is in a T shape, the arc size of the arc-shaped forge piece is not easy to control, and the arc-shaped forge piece is seriously deformed and difficult to straighten due to the influence of residual stress after; adopt conventional cold deformation mode, be the megaradian because of arc forging overall dimension, the atress is unstable, very easily leads to the arc to be straightened, and arc diameter grow is not conform to the product size requirement, and arc forging cross section becomes the T type in addition, and conventional cold deformation mode can only carry out residual stress from the muscle portion and eliminate, and is effectual.
Meanwhile, the conventional cold deformation method is difficult to control the size, the large-radian appearance of the forged piece easily causes product scrapping, and a finished product cannot be processed due to stress deformation in the subsequent machining process of the part, so that the production of the arc forged piece is greatly limited.
Therefore, how to effectively improve the forming quality of the arc-shaped forge piece is a technical problem which needs to be solved by the technical personnel in the field at present.
Disclosure of Invention
The invention aims to provide an arc-shaped forge piece processing system and a processing method, which are used for improving the forming quality of an arc-shaped forge piece, reducing cold deformation and improving the product percent of pass.
In order to achieve the purpose, the invention provides the following technical scheme:
the arc-shaped forge piece processing system comprises a forge piece machine for processing the arc-shaped forge piece and a cold deformation die for performing cold deformation and straightening on the arc-shaped forge piece, wherein a die cavity which is the same as the shape and the size of the finished arc-shaped forge piece is arranged in the cold deformation die.
Preferably, the cold deformation die comprises an upper die and a lower die, the bottom of the upper die protrudes downwards, the top of the lower die is recessed downwards, and an arc-shaped die cavity is formed between the upper die and the lower die.
Preferably, the section of the arc-shaped forging is T-shaped, and a groove for fixing the joint of the arc-shaped forging is formed in the die cavity.
Preferably, a platform used for limiting the ribs of the arc-shaped forge piece is further arranged in the die cavity.
Preferably, a plurality of bosses are further arranged on two sides of the rib of the arc-shaped forging; and an avoiding groove for placing the boss is further formed in the mold cavity of the cold deformation mold.
The arc-shaped forge piece processing method adopts the arc-shaped forge piece processing system and comprises the following steps:
step S1: forging the blank to obtain an arc-shaped forging;
step S2: quenching the arc-shaped forge piece;
step S3: determining the stress conditions of different parts according to the overall dimension of the arc-shaped forge piece, designing the dimension, the appearance and the reduction of a die cavity in a cold deformation die, and carrying out cold treatment and straightening on the quenched arc-shaped forge piece by adopting the cold deformation die;
step S4: and opening the die to obtain the finished product of the arc-shaped forge piece.
Preferably, the step S1 includes: and forging the blank by using a forging machine to obtain the arc-shaped forging.
Preferably, the arc diameter of the finished arc forging is 3.5-4m, and the arc length is 2.8-3.2 m.
The arc-shaped forge piece processing system comprises a forge piece machine for processing the arc-shaped forge piece and a cold deformation die for carrying out cold deformation and straightening on the arc-shaped forge piece, wherein a die cavity with the same shape and size as the finished arc-shaped forge piece is arranged in the cold deformation die. According to the arc-shaped forge piece processing system provided by the invention, the cold deformation die is additionally arranged, the die cavity of the cold deformation die is adopted to limit the appearance of the arc-shaped forge piece, so that the stress of the arc-shaped forge piece is stable, meanwhile, the die cavity is preset with the required arc-shaped size, namely the size of the finished arc-shaped forge piece, the arc-shaped forge piece is further ensured to deform towards the direction of the product size meeting the requirement in the cold deformation process, the technical bottleneck that the arc-shaped forge piece is difficult to machine deform and straighten is effectively solved, qualified products are produced, and remarkable economic benefits are obtained.
The invention provides a processing method of an arc-shaped forge piece, which comprises the following steps: step S1: forging the blank to obtain an arc-shaped forging; step S2: quenching the arc-shaped forge piece; step S3: determining the stress conditions of different parts according to the overall dimension of the arc-shaped forge piece, designing the dimension, the appearance and the reduction of a die cavity in a cold deformation die, and carrying out cold treatment and straightening on the quenched arc-shaped forge piece by adopting the cold deformation die; step S4: and opening the die to obtain the finished product of the arc-shaped forge piece. According to the arc-shaped forging piece processing method provided by the invention, after the arc-shaped forging piece is quenched, cold deformation and straightening are carried out by using the cold deformation die for assistance, so that residual stress after quenching can be effectively eliminated, the problem of machining deformation is solved, the straightening method is optimized, the product shape is ensured, the working efficiency is improved, the labor intensity is reduced, qualified arc-shaped forging pieces are produced, and the economic benefit is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural view of an arc forging;
FIG. 2 is a schematic structural view of a specific embodiment of a cold deformation mold in the arc-shaped forge piece processing system provided by the invention;
FIG. 3 is a top view of a mold cavity of a cold-forming mold in the arc forging processing system provided by the present invention;
FIG. 4 is a flow chart of a method for machining an arc-shaped forging according to the present invention;
wherein: an arc-shaped forge piece-1, an upper die-2, a lower die-3, a groove-4 and a platform-5.
Detailed Description
The core of the invention is to provide an arc-shaped forge piece processing system and a processing method, which are used for improving the forming quality of the arc-shaped forge piece, reducing cold deformation and improving the product percent of pass.
In order that those skilled in the art will better understand the disclosure, the invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1 to 4, fig. 1 is a schematic structural view of an arc-shaped forging; FIG. 2 is a schematic structural view of a specific embodiment of a cold deformation mold in the arc-shaped forge piece processing system provided by the invention; FIG. 3 is a top view of a mold cavity of a cold-forming mold in the arc forging processing system provided by the present invention; FIG. 4 is a flow chart of the arc forging processing method provided by the invention.
In this embodiment, the arcuate forging processing system includes a forging machine and a cold-deforming die.
The forging machine is used for processing the arc-shaped forging 1, the cold deformation die is used for carrying out cold deformation and straightening on the arc-shaped forging 1, and a die cavity which is the same as the finished arc-shaped forging 1 in shape and size is arranged in the cold deformation die.
According to the arc forging processing system provided by the invention, the cold deformation die is additionally arranged, the die cavity of the cold deformation die is adopted to limit the appearance of the arc forging 1, so that the arc forging is stressed stably, meanwhile, the die cavity is preset with the required arc size, namely the size of the finished arc forging 1, the arc forging 1 is further ensured to deform towards the direction of the product size meeting the requirement in the cold deformation process, the technical bottleneck that the arc forging 1 is difficult to machine and deform and straighten is effectively solved, the qualified product is produced, and the remarkable economic benefit is obtained.
Specifically, the cold deformation mould includes mould 2 and lower mould 3, goes up the downward protrusion in bottom of mould 2, and the top undercut of lower mould 3 forms curved mould die cavity between last mould 2 and the lower mould 3, and arc forging 1 is placed in the mould die cavity.
On the basis of the above embodiments, the section of the arc forging 1 is T-shaped, and the die cavity is provided with a groove 4 for fixing the joint of the arc forging 1. Further, still be equipped with in the mould die cavity and be used for carrying on spacing platform 5 to the rib of arc forging 1. Specifically, the joint of the arc-shaped forging 1 is a T-shaped top and is a cold deformation main area, the rib plate is a T-shaped leg and is a cold deformation secondary area, the groove 4 in the die cavity is used for placing the joint of the arc-shaped forging 1 and is used for limiting the cold deformation main area of the arc-shaped forging 1, the platform 5 in the die cavity is used for bearing the force of ribs, and the T-shaped top of the arc-shaped forging 1 is vertically arranged and placed in the die cavity as shown in fig. 1.
Specifically, a plurality of bosses are arranged on two sides of the rib of the arc forging 1; the mould die cavity of cold deformation mould still is equipped with the groove of dodging that supplies the boss to put into, and is concrete, dodges the groove and offers on the bellying face of last mould 2 to and on the sunken face of lower mould 3, supply the boss to put into, make the size of the arc forging 1 after the cold deformation more accurate.
The cold deformation die in the arc-shaped forge piece processing system is simple and practical in design, the reality of production is closely combined, the difficult problem of residual stress elimination and straightening is effectively solved, the technical bottleneck of the arc-shaped forge piece 1 is broken through, the working efficiency is also improved, the labor intensity is reduced, and good economic benefits are created.
Besides the arc-shaped forge piece processing system, the invention also provides a processing method of the arc-shaped forge piece.
The processing method of the arc-shaped forge piece comprises the following steps:
step S1: forging the blank to obtain an arc-shaped forging piece 1, specifically, forging the blank by using a forging machine to obtain the arc-shaped forging piece 1;
step S2: quenching the arc-shaped forging 1, wherein the arc-shaped forging 1 after quenching is easy to deform;
step S3: aiming at the overall dimension of the arc-shaped forging 1, determining the stress conditions of different parts, designing the dimension, the appearance and the pressing amount of a die cavity in a cold deformation die, and carrying out cold treatment and straightening on the quenched arc-shaped forging 1 by adopting the cold deformation die, wherein the cold deformation die can effectively limit the deformation degree of the arc-shaped forging 1; specifically, the joint of the arc forging 1 is a main cold deformation area, the deformation is large, a relatively large pressing amount is required to be set, the rib plate is a secondary cold deformation area, the deformation is small, a relatively small pressing amount is required to be set, the groove 4 in the die cavity is used for placing the joint of the arc forging 1 and limiting the main cold deformation area of the arc forging 1, the platform 5 in the die cavity is used for bearing the force of ribs, and the T-shaped top of the arc forging 1 is vertically arranged and placed in the die cavity; the rolling reduction of the cold deformation die can be set according to the size difference between the deformation degree after quenching and the finished product of the arc forging 1;
step S4: and opening the die to obtain the finished product of the arc forging 1.
On the basis of the above embodiments, the arc diameter of the finished product of the arc forging 1 is 3.5-4m, and the arc length is 2.8-3.2 m. Specifically, the arc diameter of the arc forging 1 is 3.76 meters, the arc length reaches 2.95 meters, the overall length is 2.8 meters, namely the distance between two end parts of the arc forging 1 is 2.8 meters, protruding ribs exist on the whole, and the cross section is in a T shape.
According to the arc-shaped forging piece processing system and the processing method provided by the embodiment, the main area and the secondary area of the quenched residual stress are distinguished according to the specific size of the arc-shaped forging piece 1, and different deformation amounts are carried out, so that the uniformity of stress relief is achieved, and the subsequent machining is ensured not to deform. By adopting cold deformation in the die, the stress conditions of different parts are determined according to the overall dimension of the arc-shaped forge piece 1, and the stress direction and the deformation degree are limited by controlling the dimension and the profile of the die cavity and designing corresponding pressing amount. Simultaneously, the cold deformation mould adopts upper and lower mould 3, and lower mould 3 adopts sunken arc to bear arc forging 1 to fix a position through the die cavity and stabilize, go up mould 2 and adopt protrusion arc to exert pressure to arc forging 1, under the pressure effect of upper and lower mould 3, carry out cold deformation to arc forging 1 and eliminate residual stress, straighten arc forging 1 through the mould die cavity, go on cold deformation and straightening simultaneously, and is simple high-efficient, effectively solves the technological bottleneck of arc forging 1 machine adding deformation and straightening difficulty simultaneously.
The arc-shaped forge piece processing system and the processing method provided by the invention are described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are provided only to help understand the processing method and the core concept of the present invention. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (8)
1. The arc-shaped forge piece processing system is characterized by comprising a forge piece machine for processing an arc-shaped forge piece (1) and a cold deformation die for performing cold deformation and straightening on the arc-shaped forge piece (1), wherein a die cavity with the same shape and size as the finished arc-shaped forge piece (1) is arranged in the cold deformation die.
2. The arc forging processing system of claim 1, wherein the cold deformation die comprises an upper die (2) and a lower die (3), the bottom of the upper die (2) protrudes downwards, the top of the lower die (3) is recessed downwards, and an arc-shaped die cavity is formed between the upper die (2) and the lower die (3).
3. The arc forging processing system of claim 2, wherein the arc forging (1) is T-shaped in cross section, and a groove (4) for fixing the joint of the arc forging (1) is formed in the die cavity.
4. The arc forging processing system of claim 3, wherein a platform (5) for limiting ribs of the arc forging (1) is further arranged in the die cavity.
5. The arc forging processing system of claim 3 or 4, wherein a plurality of bosses are further arranged on two sides of the ribs of the arc forging (1); and an avoiding groove for placing the boss is further formed in the mold cavity of the cold deformation mold.
6. An arc forging processing method, which adopts the arc forging processing system of any one of claims 1 to 5, and is characterized by comprising the following steps:
step S1: forging the blank to obtain an arc-shaped forging piece (1);
step S2: quenching the arc-shaped forge piece (1);
step S3: determining the stress conditions of different parts according to the overall dimension of the arc-shaped forging (1), designing the dimension, the appearance and the pressing amount of a die cavity in a cold deformation die, and carrying out cold treatment and straightening on the quenched arc-shaped forging (1) by adopting the cold deformation die;
step S4: and opening the die to obtain the finished product of the arc forging (1).
7. The arc forging machining method according to claim 6, wherein the step S1 includes: and forging the blank by using a forging machine to obtain the arc-shaped forging (1).
8. The processing method of the arc-shaped forging piece according to the claim 6, wherein the arc-shaped diameter of the finished arc-shaped forging piece (1) is 3.5-4m, and the arc-shaped length is 2.8-3.2 m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011584303.4A CN112705658A (en) | 2020-12-28 | 2020-12-28 | Arc-shaped forge piece machining system and machining method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011584303.4A CN112705658A (en) | 2020-12-28 | 2020-12-28 | Arc-shaped forge piece machining system and machining method |
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| CN112705658A true CN112705658A (en) | 2021-04-27 |
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| CN202011584303.4A Pending CN112705658A (en) | 2020-12-28 | 2020-12-28 | Arc-shaped forge piece machining system and machining method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115283597A (en) * | 2022-08-09 | 2022-11-04 | 上海电气上重铸锻有限公司 | Forging method and forming die for super-large-diameter thin-wall arc-shaped forging with boss |
-
2020
- 2020-12-28 CN CN202011584303.4A patent/CN112705658A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115283597A (en) * | 2022-08-09 | 2022-11-04 | 上海电气上重铸锻有限公司 | Forging method and forming die for super-large-diameter thin-wall arc-shaped forging with boss |
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