CN108856613B - Method for controlling forging size of metal ring piece - Google Patents
Method for controlling forging size of metal ring piece Download PDFInfo
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- CN108856613B CN108856613B CN201810591802.2A CN201810591802A CN108856613B CN 108856613 B CN108856613 B CN 108856613B CN 201810591802 A CN201810591802 A CN 201810591802A CN 108856613 B CN108856613 B CN 108856613B
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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
- B21J1/00—Preparing metal stock or similar ancillary operations prior, during or post forging, e.g. heating or cooling
- B21J1/04—Shaping in the rough solely by forging or pressing
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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
- B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
- B21J5/10—Piercing billets
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Abstract
The invention belongs to the forging technology, and particularly relates to a method for controlling the forging size of a metal ring piece. According to the size of the metal ring piece required by production, a bar is heated to a certain temperature to upset a cake to obtain a hollow cylinder, then a ring piece blank is obtained by punching, and then the required metal ring piece is obtained by performing reaming. The upsetting cake and the expanding link are controlled in the same mode according to the preset size value of the metal ring, and the inner diameter and the outer diameter of the metal ring are controlled according to the preset size value of a metal replacement part during expanding, so that the vertical size requirement and the deformation of a ring blank are effectively controlled, the characteristics of complex later-stage process flow and high manufacturing cost caused by unreasonable size are reduced, the production efficiency is improved, and the upsetting cake and expanding link has a higher practical application value compared with the prior art.
Description
Technical Field
The invention belongs to the forging technology, and particularly relates to a method for controlling the forging size of a metal ring piece.
Background
The forging method of metal links, such as various alloy ring pieces, generally comprises the steps of heating a bar, upsetting and blanking to obtain a solid cylinder, and then performing center punching, expanding, pre-expanding, end surface flattening and final expanding to obtain the required alloy ring piece.
However, in the above method, the prior art of pre-expansion, end face flattening and final expansion are respectively forged, and no measure is adopted to control the size of the ring blank in order to ensure the size requirement of the forged piece in the forging process, so that the control of the vertical size requirement and the deformation is difficult to accurately achieve. The performance indexes of parts of the forged pieces exceed the standard, the number of fire of the forged pieces is more, the process flow is complex, and the manufacturing cost is higher.
Disclosure of Invention
The purpose of the invention is: the method can accurately control the vertical dimension and the inner and outer diameter dimensions in the forging process of the metal ring piece.
The technical scheme of the invention is as follows: according to the size of the metal ring part required by production, a bar is heated to a certain temperature to upset cakes to obtain a solid cylinder, then a ring part blank is obtained by punching, and then the required metal ring part is obtained by carrying out counterboring, wherein the heights of the upset cakes and the counterboring are controlled in the same mode according to the preset size value of the metal ring part, and the inner diameter and the outer diameter of the metal ring part are controlled according to the preset size value of the metal ring part when the metal ring part is counterbored.
Wherein, the preset values of the height sizes of the upset cake and the metal ring piece of the horse expander are as follows:
when H/(D-D/2) is not less than 1 and not more than 2, HRing blank＝(HRing piece－HRing piece×3％～5％)；
When 2 is in<When H/(D-D/2) is less than or equal to 2.5, HRing blank＝(HRing piece－HRing piece×2％～3％)；
When H/(D-D/2) > 2.5, HRing blank＝(HRing piece－HRing piece×1％～1.5％)。
The outer diameter of the metal ring part which is subjected to the expanding at the same time is preset as follows:
when H/(D-D/2) is not less than 1 and not more than 2, phiOutside horse＝D×(50％～65％)；
When 2 is in<When H/(D-D/2) is less than or equal to 2.5, phiOutside horse＝D×(66％～75％)；
When H/(D-D/2) > 2.5, phiOutside horse＝D×(75％～85％)。
Wherein: h: is the height of the ring;
d: is the outer diameter of the ring;
d: is the inner diameter of the ring.
Wherein, the preset value of the inner diameter of the expanded metal ring piece is as follows:
when H/(D-D/2) is not less than 1 and not more than 2, phiInside horse＝d×(45％～50％)；
When 2 is in<When H/(D-D/2) is less than or equal to 2.5, phiInside horse＝d×(51％－65％)；
When H/(D-D/2) > 2.5, phiInside horse＝d×(66％－75％)。
Wherein: h: is the height of the ring;
d: is the outer diameter of the ring;
d: is the inner diameter of the ring.
The invention has the beneficial effects that: according to the invention, through the design of the size of the earlier-stage ring blank of the titanium alloy ring piece, the vertical size requirement and the deformation of the ring blank are effectively controlled, the characteristics of complicated later-stage process flow and high manufacturing cost caused by unreasonable size are reduced, and the production efficiency is improved.
Drawings
FIG. 1 is a schematic view of an upset cake;
fig. 2 is a schematic view of a horse expander.
Detailed Description
The invention is further illustrated by the following specific examples:
according to the size of the titanium alloy ring required by production, the invention designs the corresponding size according to the product standard by using a bar material, the bar material is heated to a certain temperature for upsetting to obtain a solid cylinder, then a ring blank is obtained by punching, and then the required titanium alloy ring is obtained by performing reaming. The upsetting cake and the expanding link are controlled in the same mode according to the preset size value of the metal ring, and the inner diameter and the outer diameter of the metal ring are controlled according to the preset size value of the metal ring during expanding.
Referring to fig. 1 and fig. 2, the metal ring upset cake and the ring-shaped part are classified according to the ratio of the height to the wall thickness, and then different preset height dimension values are set for the ring-shaped part upset cake and the ring-shaped part enlarged by a horse according to the difference of the ratio:
when H/(D-D/2) is not less than 1 and not more than 2, HRing blank＝(HRing piece－HRing piece×3％～5％)；
When 2 is in<When H/(D-D/2) is less than or equal to 2.5, HRing blank＝(HRing piece－HRing piece×2％～3％)；
When H/(D-D/2) > 2.5, HRing blank＝(HRing piece－HRing piece×1％～1.5％)。
In addition, the height of the upsetting cake is the same as that of the right side of the upsetting cake, so that corresponding height dimension control is performed on forgings with different heights and wall thicknesses, and the forging height dimension precision is guaranteed.
For the inner diameter and the outer diameter of the metal ring piece, the metal ring piece is classified according to the ratio of the height to the wall thickness of the metal ring piece, and then different preset values of the inner diameter and the outer diameter are respectively set on the ring expanding piece according to the difference of the ratio:
the outer diameter of the metal ring part which is subjected to the expanding at the same time is preset as follows:
when H/(D-D/2) is not less than 1 and not more than 2, phiOutside horse＝D×(50％～65％)；
When 2 is in<When H/(D-D/2) is less than or equal to 2.5, phiOutside horse＝D×(66％～75％)；
When H/(D-D/2) > 2.5, phiOutside horse＝D×(75％～85％)。
Wherein, the preset value of the inner diameter of the expanded metal ring piece is as follows:
when H/(D-D/2) is not less than 1 and not more than 2, phiInside horse＝d×(45％～50％)；
When 2 is in<When H/(D-D/2) is less than or equal to 2.5, phiInside horse＝d×(51％－65％)；
When H/(D-D/2) > 2.5, phiInside horse＝d×(66％－75％)。
Wherein: h: is the height of the ring;
d: is the outer diameter of the ring;
d: is the inner diameter of the ring.
Therefore, the metal piece with the preset value can be obtained by reaming, the sizes of the inner hole and the outer hole required by the forge piece can be obtained after reaming, and the forging size requirement is met.
Example (b):
the material of a certain type of parts is TC4 alloy, and the size of the forging is as follows: Φ 828 × Φ 712 × 95.
Designing the size of a ring blank according to the size of the forged piece, wherein the thickness of the forged piece is more than 50mm, and the height of a pushed blank ring is 94 mm; from 1 ≦ H/(D-D/2) ≦ 1.62 ≦ 2, control of inner and outer diameters, ΦOuter cover＝836mm，ΦInner partHorse ream size Φ 836 × Φ 705 × 94.
The forging steps are detailed as follows:
the first step is as follows: charging phi 220X 405 batch into furnace, executing according to heating temperature curve, upsetting cake to phi 415X 120 (completed by 2 fire times); punch ≤ phi 150 × 35(1 fire completed)
The second step is that: turning the inner hole to phi 155; chamfering R8 on the upper and lower end faces of the inner hole; blowing sand and polishing
The third step: and (3) expanding the forged piece after the vehicle to a rough shape size according to a heating temperature curve: phi 500 x phi 370 x 94
The fourth step: reaming to the size of the forging drawing: phi 828X 712X 95
The fifth step: heat treating the forging according to the heat treatment specification
And a sixth step: and (4) carrying out physical and chemical tests on the forged piece, wherein each performance index reaches the standard. The performance requirements of the engine part on the forging required by the preparation of the engine part are met.
Claims (1)
1. The method for controlling the forging size of the metal ring piece is characterized in that according to the size of the metal ring piece required by production, a bar is heated to a certain temperature to upset cakes to obtain a solid cylinder, then a ring piece blank is obtained by punching, and then the required metal ring piece is obtained by carrying out counterboring, wherein the heights of the upset cakes and the counterboring are controlled in the same mode according to the preset size value of the metal ring piece, and the inner diameter and the outer diameter of the metal ring piece are controlled according to the preset size value of the metal ring piece during counterboring;
wherein, the preset values of the height sizes of the upset cake and the metal ring piece of the horse expander are as follows:
when H/(D-D/2) is not less than 1 and not more than 2, HRing blank＝(HRing piece－HRing piece×3％～5％)；
When 2 is in<When H/(D-D/2) is less than or equal to 2.5, HRing blank＝(HRing piece－HRing piece×2％～3％)；
When H/(D-D/2) > 2.5, HRing blank＝(HRing piece－HRing piece×1％～1.5％)；
Wherein: h: is the height of the ring; d: is the outer diameter of the ring; d: is the inner diameter of the ring;
the method comprises the following steps of (1) presetting the outer diameter size of a metal ring piece subjected to expanding at once:
when H/(D-D/2) is not less than 1 and not more than 2, phiOutside horse＝D×(50％～65％)；
When 2 is in<When H/(D-D/2) is less than or equal to 2.5, phiOutside horse＝D×(66％～75％)；
When H/(D-D/2) > 2.5Time phiOutside horse＝D×(75％～85％)；
The preset value of the inner diameter of the expanded metal ring piece is as follows:
when H/(D-D/2) is not less than 1 and not more than 2, phiInside horse＝d×(45％～50％)；
When 2 is in<When H/(D-D/2) is less than or equal to 2.5, phiInside horse＝d×(51％－65％)；
When H/(D-D/2) > 2.5, phiInside horse＝d×(66％－75％)；
Wherein HRing pieceIs the height of the ring member, HRing blankPreset height dimension phi of metal ring piece for upsetting cake and expanding linkOutside horseThe preset value of the outer diameter size of the metal ring part in the step of expanding the ring part at once, phiInside horseThe preset value of the inner diameter of the metal ring piece in the expanding link is obtained.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810591802.2A CN108856613B (en) | 2018-06-08 | 2018-06-08 | Method for controlling forging size of metal ring piece |
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| CN201810591802.2A CN108856613B (en) | 2018-06-08 | 2018-06-08 | Method for controlling forging size of metal ring piece |
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| CN108856613B true CN108856613B (en) | 2020-08-11 |
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| CN113510216B (en) * | 2021-03-31 | 2023-02-21 | 西安航天发动机有限公司 | Forging forming method for niobium-tungsten alloy ring-shaped piece |
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| CN103286248B (en) * | 2013-05-10 | 2015-01-14 | 西安航空动力股份有限公司 | Forging method of 1Cr12Ni3MoVN annular forged piece |
| CN104191166B (en) * | 2014-08-04 | 2016-08-24 | 贵州航宇科技发展股份有限公司 | A kind of roll-forming method of aluminium alloy height cylinder thin-walled ring |
| CN105170853B (en) * | 2015-11-16 | 2017-05-17 | 中信重工机械股份有限公司 | Integral forging forming method for ultra-large type hollow disc forgings |
| CN106694791A (en) * | 2016-12-12 | 2017-05-24 | 陕西宏远航空锻造有限责任公司 | Crack control and forming method for large and medium-sized GH141 alloy annular forged piece |
| CN107913963B (en) * | 2017-12-07 | 2019-06-28 | 陕西宏远航空锻造有限责任公司 | A kind of GH4169 alloy annular forging forming method |
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