CN111390085A - Forging method for forging with connecting skin - Google Patents
Forging method for forging with connecting skin Download PDFInfo
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- CN111390085A CN111390085A CN202010341708.9A CN202010341708A CN111390085A CN 111390085 A CN111390085 A CN 111390085A CN 202010341708 A CN202010341708 A CN 202010341708A CN 111390085 A CN111390085 A CN 111390085A
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- forging
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- die
- hole
- pressure
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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
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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
- B21J13/00—Details of machines for forging, pressing, or hammering
- B21J13/02—Dies or mountings therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K29/00—Arrangements for heating or cooling during processing
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- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
The invention discloses a forging method of a forging with connecting skin, which comprises the following steps: putting the workpiece to be processed into a die for forging and forming, and taking out the workpiece when the workpiece is formed to 60-80% and the forging pressure is within the nominal pressure range of the die; processing a through hole at the connecting skin of the workpiece; and putting the workpiece into the mold again for continuous molding. The forging method can reduce the forging pressure required in the forging forming process, so that the problems that the nominal pressure of equipment cannot meet the production requirement, the abrasion of a die is serious and the service life is shortened due to overlarge forging pressure in the large forging forming process are solved.
Description
Technical Field
The invention relates to the technical field of machining, in particular to a forging method of a forging with connecting skin.
Background
Forging and pressing belong to plastic processing, or pressure processing, and are mainly used for producing metal parts and processing certain non-metals, such as engineering plastics, rubber, ceramic blanks, adobes, composite material and the like. The forged part is called as a forged part.
Forging is the combination of forging and stamping, and is a forming method that uses a hammer head, an anvil, a punch head of a forging machine or a die to apply pressure to a blank to cause plastic deformation, thereby obtaining a product with a desired shape and size.
Specifically, in the forging process, the whole blank undergoes obvious plastic deformation and has a large amount of plastic flow; in the press working, the blank is formed mainly by changing the spatial position of each region area, and plastic flow does not occur over a large distance inside thereof.
In the prior art, some heavy forgings are required to be produced by adopting an integral forging method under the severe service performance requirement, but the equipment capacity of a common forging enterprise cannot meet the force performance requirement of integral forging of the heavy forgings. And, forging pressure in the forging forming process plays decisive effect to the mould life-span, and forging pressure is too big, just can the life of greatly reduced mould.
Therefore, how to reduce the forging pressure in the forging forming process to avoid the problem that the nominal pressure of the equipment cannot meet the production requirement due to the overlarge forging pressure in the large forging forming process, avoid the serious abrasion of the die and the shortened service life is a technical problem to be solved urgently by technical personnel in the field at present.
Disclosure of Invention
In view of the above, the invention aims to provide a forging method for a forging with connecting skin, which can reduce the forging pressure required in the forging forming process, thereby solving the problems that the nominal pressure of equipment cannot meet the production requirement, the abrasion of a die is serious and the service life is shortened due to the overlarge forging pressure in the large forging forming process.
In order to achieve the purpose, the invention provides the following technical scheme:
a forging method of a forging with connecting skin comprises the following steps:
step S1: putting a workpiece to be processed into a die for forging and forming, and taking out the workpiece when the workpiece is formed to 60-80% and the forging pressure is within the nominal pressure range of the die;
step S2: processing a through hole at the connecting skin of the workpiece;
step S3: and putting the workpiece into the mold again for continuous molding.
In step S1 of the forging method, the workpiece is heated to the forging temperature and then placed in the mold for forming.
In step S3 of the forging method, the workpiece is first heated to the forging temperature, and then placed into the mold for further forming.
In the forging method, the through hole is located in the center of the connecting skin.
In the forging method, the through hole is a circular through hole or a polygonal through hole.
In the above forging method, the area of the through-hole accounts for 20 to 90% of the area of the continuous skin.
In step S1 of the forging method, after the part is taken out, the flash on the part is removed.
In the forging method, the material of the article is an aluminum alloy.
In the forging method, the die is a forging die for forging and pressing the bowl-shaped structure forging, and the connecting sheet is the bowl bottom of the bowl-shaped structure forging.
According to the technical scheme, the forging method of the forging with the connecting skin provided by the invention has the advantages that through the through holes are processed at the connecting skin of the workpiece, so that the projection area of the workpiece on the die can be reduced, the effect of reducing the forging pressure required by the workpiece in the forming process is achieved, the complete forming of the large forging with the connecting skin in the nominal pressure range of common die equipment is realized, the problem of die abrasion is favorably relieved or avoided, and the service life of the die is prolonged.
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 flow chart of a forging method for a forging with integral skin according to an embodiment of the invention;
FIG. 2 is a front view of a forging provided by embodiments of the present invention;
FIG. 3 is a top view of a forging provided by embodiments of the present invention;
fig. 4 is A cross-sectional view of section A-O-A in fig. 3.
Detailed Description
The embodiment of the invention discloses a forging method of a forging with connecting skin, which can reduce the forging pressure required in the forging forming process, thereby solving the problems that the nominal pressure of equipment cannot meet the production requirement, the abrasion of a die is serious and the service life is shortened due to overlarge forging pressure in the large forging forming process.
Specifically, the forging is made of aluminum alloy (for example, 2a14 aluminum alloy), the outer profile of the forging is phi 1430 × 510mm, and the projected area is about 1.6mm 2. in the prior art, if the forging is formed at one time, the forging pressure is greater than 30000t, the requirement of a forging die device cannot be met.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 4, fig. 1 is a schematic flow chart of a forging method of a forging with continuous skin according to an embodiment of the present invention; FIG. 2 is a front view of a forging provided by embodiments of the present invention; FIG. 3 is a top view of a forging provided by embodiments of the present invention; fig. 4 is A cross-sectional view of section A-O-A in fig. 3.
Referring to fig. 1, a forging method of a forging with connecting skin according to an embodiment of the present invention includes the following steps:
step S1: putting the workpiece to be processed into a die for forging and forming, and taking out the workpiece when the workpiece is formed to 60-80% and the forging pressure is within the nominal pressure range of the die;
step S2: processing a through hole at the connecting skin of the workpiece;
step S3: and (4) putting the part into the mold again to continue molding, and finally, completely molding the part within the allowable range of the equipment.
The die is a forging die for forging and pressing the bowl-shaped structural forge piece, and the connecting skin of the work piece is the bowl bottom of the bowl-shaped structural forge piece.
According to the technical scheme, the forging method of the forging with the connecting skin provided by the embodiment of the invention has the advantages that through the through holes are processed at the connecting skin of the workpiece, so that the projection area of the workpiece on the die can be reduced, the effect of reducing the forging pressure required by the workpiece in the forming process is achieved, the complete forming of the large forging with the connecting skin in the nominal pressure range of common die equipment is realized, the problem of die abrasion is favorably relieved or avoided, and the service life of the die is prolonged.
Specifically, in step S1 of the forging method, the workpiece is heated to the forging temperature and then placed in a mold for molding.
Specifically, in step S3 of the forging method, the workpiece is first heated to the forging temperature, and then placed in a mold for further forming.
Preferably, in the forging method, the through hole machined at the connecting skin of the part is positioned at the central position of the connecting skin, and the area of the through hole accounts for 20 to 90 percent of the area of the connecting skin. Also, the through-hole may be a circular through-hole or a polygonal through-hole. For example, referring to fig. 3, the through hole may be a rectangular through hole having a length and a width of 400mm each. But not limited to this, the skilled person can design the specific structure and size of the through hole at the skin joint of the product according to the actual needs, and the invention is not limited to the specific structure and size of the through hole.
Specifically, in step S1 of the forging method, after the product is taken out, the flash on the product is removed. Then, step S2 and step S3 are performed.
It should be noted that the term "sheet", i.e., punched sheet, as used herein refers to a thin layer of metal left in the hole of a forged part with holes to be punched out.
Moreover, the forging method provided by the invention can be suitable for forging pieces with connected skins in various structures, materials and sizes, and the structure, the material and the size of the forging piece are not particularly limited. In specific implementation, technicians can adapt the forging method provided by the invention to forging processes of forgings with connected skin of different structures, different materials and different sizes according to actual needs.
Finally, it should also be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. A forging method of a forging with connecting skin is characterized by comprising the following steps:
step S1: putting a workpiece to be processed into a die for forging and forming, and taking out the workpiece when the workpiece is formed to 60-80% and the forging pressure is within the nominal pressure range of the die;
step S2: processing a through hole at the connecting skin of the workpiece;
step S3: and putting the workpiece into the mold again for continuous molding.
2. The forging method of claim 1, wherein in step S1, the part is heated to the forging temperature and then placed into the die for forming;
in step S3, the workpiece is first heated to the forging temperature and then placed in the mold for further molding.
3. The forging method of claim 1, wherein the through hole is located in a center of the web.
4. The forging method according to claim 1, wherein the through-hole is a circular through-hole or a polygonal through-hole.
5. The forging method of claim 1, wherein the area of the through-hole is 20% to 90% of the area of the continuous skin.
6. The forging method of claim 1, wherein in step S1, after the part is removed, the flash is removed from the part.
7. The forging method of any one of claims 1 to 6, wherein the material of the article is an aluminum alloy.
8. The forging method according to any one of claims 1 to 6, wherein the die is a forging die for forging a bowl-structured forging, and the connecting skin is a bowl bottom of the bowl-structured forging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010341708.9A CN111390085A (en) | 2020-04-27 | 2020-04-27 | Forging method for forging with connecting skin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010341708.9A CN111390085A (en) | 2020-04-27 | 2020-04-27 | Forging method for forging with connecting skin |
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| Publication Number | Publication Date |
|---|---|
| CN111390085A true CN111390085A (en) | 2020-07-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010341708.9A Pending CN111390085A (en) | 2020-04-27 | 2020-04-27 | Forging method for forging with connecting skin |
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| CN (1) | CN111390085A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201906782U (en) * | 2010-12-23 | 2011-07-27 | 中国科学院金属研究所 | Forming device for large-scale roller/gear forgings |
| CN103231002A (en) * | 2013-04-19 | 2013-08-07 | 亚超特工业有限公司 | Forging mould and molding method of metal casing applied to electronic device |
| RU2521929C1 (en) * | 2013-01-09 | 2014-07-10 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Липецкий государственный технический университет" (ЛГТУ) | Die for open-type bulk forging |
| CN105328096A (en) * | 2015-11-14 | 2016-02-17 | 沈阳黎明航空发动机(集团)有限责任公司 | Forming method of die forging clamps made of titanium alloy |
| CN106311946A (en) * | 2016-09-06 | 2017-01-11 | 清华大学 | Die-forming method taking non-maximal cross section as die parting face based on combined die |
| CN107626880A (en) * | 2017-09-15 | 2018-01-26 | 中国原子能科学研究院 | A kind of manufacturing process of large-sized annular forging |
-
2020
- 2020-04-27 CN CN202010341708.9A patent/CN111390085A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201906782U (en) * | 2010-12-23 | 2011-07-27 | 中国科学院金属研究所 | Forming device for large-scale roller/gear forgings |
| RU2521929C1 (en) * | 2013-01-09 | 2014-07-10 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Липецкий государственный технический университет" (ЛГТУ) | Die for open-type bulk forging |
| CN103231002A (en) * | 2013-04-19 | 2013-08-07 | 亚超特工业有限公司 | Forging mould and molding method of metal casing applied to electronic device |
| CN105328096A (en) * | 2015-11-14 | 2016-02-17 | 沈阳黎明航空发动机(集团)有限责任公司 | Forming method of die forging clamps made of titanium alloy |
| CN106311946A (en) * | 2016-09-06 | 2017-01-11 | 清华大学 | Die-forming method taking non-maximal cross section as die parting face based on combined die |
| CN107626880A (en) * | 2017-09-15 | 2018-01-26 | 中国原子能科学研究院 | A kind of manufacturing process of large-sized annular forging |
Non-Patent Citations (1)
| Title |
|---|
| 黄虹等: "薄壁、深腔、异形大孔的大型长轴类锻件模锻成形", 《热加工工艺》 * |
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Application publication date: 20200710 |
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