CN110802189B - Forging process for high-temperature alloy plate blank difficult to deform - Google Patents

Forging process for high-temperature alloy plate blank difficult to deform Download PDF

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Publication number
CN110802189B
CN110802189B CN201911099556.XA CN201911099556A CN110802189B CN 110802189 B CN110802189 B CN 110802189B CN 201911099556 A CN201911099556 A CN 201911099556A CN 110802189 B CN110802189 B CN 110802189B
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forging
plate blank
deform
temperature
difficult
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CN110802189A (en
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张欢欢
刘猛
李爱民
闫森
田水仙
葛书可
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AVIC Shangda superalloy materials Co.,Ltd.
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AVIC Shangda Super Alloys Co Ltd
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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
    • 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
    • B21J1/003—Selecting material
    • 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
    • B21J1/06—Heating or cooling methods or arrangements specially adapted for performing forging or pressing operations
    • 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

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)

Abstract

The invention discloses a forging process of a high-temperature alloy plate blank difficult to deform, which comprises the following steps: A. heating the plate blank to 975-1005 ℃, and preserving heat for 1-2 h; B. placing the plate blank into a forging press for forging, wherein the forging pressing speed is 5-10 mm/min; C. when the forging deformation amount reaches 70% of the standard value, taking out the plate blank, reheating to 850-910 ℃, and preserving heat for 3-5 hours; D. and (4) putting the plate blank into the forging press again for forging, wherein the forging pressing speed is 1-3 mm/min until the forging is finished. The invention can improve the defects of the prior art and realize the low-temperature forging of the high-temperature alloy difficult to deform.

Description

Forging process for high-temperature alloy plate blank difficult to deform
Technical Field
The invention relates to the technical field of metallurgy, in particular to a forging process of a high-temperature alloy plate blank difficult to deform.
Background
The high-temperature alloy difficult to deform has high intersection resistance, a plurality of high-temperature strengthening phases and poor plasticity, and the common processing and forging process is difficult to realize effective processing. The hard-to-deform superalloy is a necessary material in many special industries, so how to optimize the machining and forging method of the hard-to-deform superalloy becomes one of the hot spots of research in the field.
Disclosure of Invention
The invention aims to provide a forging process of a high-temperature alloy plate blank difficult to deform, which can overcome the defects of the prior art and realize low-temperature forging of the high-temperature alloy difficult to deform.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows.
A forging process of a high-temperature alloy slab difficult to deform comprises the following steps:
A. heating the plate blank to 975-1005 ℃, and preserving heat for 1-2 h;
B. placing the plate blank into a forging press for forging, wherein the forging pressing speed is 5-10 mm/min;
C. when the forging deformation amount reaches 70% of the standard value, taking out the plate blank, reheating to 850-910 ℃, and preserving heat for 3-5 hours;
D. and (4) putting the plate blank into the forging press again for forging, wherein the forging pressing speed is 1-3 mm/min until the forging is finished.
Preferably, the thickness of the slab is 50-80 mm, the slab comprises the following components,
0.02-0.05 wt% of C, 3.5-5 wt% of Fe, 4-10 wt% of Al, 5-10 wt% of Ti, 12-14 wt% of W, 9-13 wt% of Co, 4-8 wt% of Cr, 0.35-0.55 wt% of Mn, 2-4.5 wt% of Mo and the balance of Ni.
Preferably, in the step A, the temperature is firstly increased to 750 ℃ at the speed of 75 ℃/min, then the temperature is maintained for 15min, and then the temperature is increased to the set temperature.
Preferably, in the step C, the initial heating rate is 50 ℃/min, and the heating rate is reduced by 3 ℃/min for every 100 ℃ rise of the temperature of the slab.
Preferably, the forging press comprises a base, and the top of the base is connected with a top plate through a hydraulic cylinder; be provided with the blind hole in the base, movable mounting has the rotation axis in the blind hole, the rotation axis top is fixed with the carousel, the rotation axis side is provided with annular rack, annular rack and drive gear meshing, the surface mounting of carousel has the fixation clamp, rotation axis bottom joint has elastic base, install the arc shell fragment in the elastic base, be fixed with the locating pin on the arc shell fragment, the top of locating pin is located elastic base's the outside to with annular rack selective meshing.
Preferably, a spring is arranged on the outer side of the arc-shaped elastic sheet, and two ends of the spring are connected with two ends of the arc-shaped elastic sheet.
Preferably, the top end of the annular rack is symmetrically provided with inclined plane parts, and the side surface of the annular rack is symmetrically provided with limiting grooves.
Adopt the beneficial effect that above-mentioned technical scheme brought to lie in: the invention realizes uniform heating inside the plate blank by improving the forging process, and improves the distribution uniformity of the lattice structure inside the plate blank by adopting a two-section type variable-speed forging method. The invention specially designs forging equipment capable of automatically rotating in order to improve the forging uniformity. This equipment utilizes the holding down force when forging and pressing, realizes fixed to the automatic joint of rotation axis, does not need extra active fixed establishment, and simple structure has effectively avoided the small-angle of carousel to rock when forging and pressing.
Drawings
FIG. 1 is a block diagram of a forging press in accordance with one embodiment of the present invention.
Fig. 2 is a block diagram of an elastomeric base in accordance with an embodiment of the present invention.
Fig. 3 is a block diagram of an annular rack in an embodiment of the present invention.
Detailed Description
One embodiment of the present invention comprises the steps of:
A. heating the plate blank to 995 ℃, and keeping the temperature for 2 hours;
B. placing the plate blank into a forging press for forging, wherein the forging pressing speed is 6 mm/min;
C. when the forging deformation reaches 70% of the standard value, taking out the plate blank, reheating to 880 ℃, and preserving heat for 4 hours;
D. and (4) putting the plate blank into the forging press again for forging, wherein the forging pressing speed is 3mm/min until the forging is finished.
The thickness of the plate blank is 65mm, the plate blank comprises the following components,
0.02wt% of C, 4.5wt% of Fe, 5wt% of Al, 7wt% of Ti, 12wt% of W, 13wt% of Co, 7wt% of Cr, 0.5wt% of Mn, 2.5wt% of Mo, and the balance of Ni.
In the step A, firstly, the temperature is increased to 750 ℃ at the speed of 75 ℃/min, then the temperature is kept for 15min, and then the temperature is increased to the set temperature.
In the step C, the initial heating speed is 50 ℃/min, and the heating speed is reduced by 3 ℃/min every time the temperature of the plate blank rises by 100 ℃.
Referring to fig. 1-3, the forging press comprises a base 1, wherein the top of the base 1 is connected with a top plate 3 through a hydraulic cylinder 2; be provided with blind hole 8 in the base 1, movable mounting has rotation axis 5 in the blind hole 8, rotation axis 5 top is fixed with carousel 4, rotation axis 5 side is provided with annular rack 9, annular rack 9 meshes with drive gear 6 (not shown in the motor picture of being connected with drive gear 6), the surface mounting of carousel 4 has fixation clamp 7, rotation axis 5 bottom joint has elastic base 10, install arc shell fragment 11 in the elastic base 10, be fixed with locating pin 12 on the arc shell fragment 11, the top of locating pin 12 is located elastic base 10's the outside, and with annular rack 9 selective meshing. The outer side of the arc-shaped elastic sheet 11 is provided with a spring 13, and two ends of the spring 13 are connected with two ends of the arc-shaped elastic sheet 11. Inclined plane parts 14 are symmetrically arranged at the top end of the annular rack 9, and limiting grooves 15 are symmetrically arranged on the side faces of the annular rack 9.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience of description of the present invention, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (6)

1. The forging process of the high-temperature alloy plate blank difficult to deform is characterized by comprising the following steps of:
A. heating the plate blank to 975-1005 ℃, and preserving heat for 1-2 h;
B. placing the plate blank into a forging press for forging, wherein the forging pressing speed is 5-10 mm/min;
C. when the forging deformation amount reaches 70% of the standard value, taking out the plate blank, reheating to 850-910 ℃, and preserving heat for 3-5 hours;
D. the plate blank is placed into the forging press again for forging, and the forging pressing speed is 1-3 mm/min until the forging is completed;
the thickness of the plate blank is 50-80 mm, the plate blank comprises the following components,
0.02-0.05 wt% of C, 3.5-5 wt% of Fe, 4-10 wt% of Al, 5-10 wt% of Ti, 12-14 wt% of W, 9-13 wt% of Co, 4-8 wt% of Cr, 0.35-0.55 wt% of Mn, 2-4.5 wt% of Mo and the balance of Ni.
2. The difficult-to-deform superalloy slab forging process of claim 1, wherein: in the step A, firstly, the temperature is increased to 750 ℃ at the speed of 75 ℃/min, then the temperature is kept for 15min, and then the temperature is increased to the set temperature.
3. The difficult-to-deform superalloy slab forging process of claim 2, wherein: in the step C, the initial heating speed is 50 ℃/min, and the heating speed is reduced by 3 ℃/min every time the temperature of the plate blank rises by 100 ℃.
4. The process for forging a hardly deformable superalloy slab as claimed in any of claims 1 to 3, wherein: the forging press comprises a base (1), wherein the top of the base (1) is connected with a top plate (3) through a hydraulic cylinder (2); be provided with blind hole (8) in base (1), movable mounting has rotation axis (5) in blind hole (8), rotation axis (5) top is fixed with carousel (4), rotation axis (5) side is provided with annular rack (9), annular rack (9) and drive gear (6) meshing, the surface mounting of carousel (4) has fixation clamp (7), rotation axis (5) bottom joint has elastic base (10), install arc shell fragment (11) in elastic base (10), be fixed with locating pin (12) on arc shell fragment (11), the top of locating pin (12) is located the outside of elastic base (10), and with annular rack (9) selective meshing.
5. The difficult-to-deform superalloy slab forging process of claim 4, wherein: the outer side of the arc-shaped elastic sheet (11) is provided with a spring (13), and two ends of the spring (13) are connected with two ends of the arc-shaped elastic sheet (11).
6. The difficult-to-deform superalloy slab forging process of claim 5, wherein: inclined plane parts (14) are symmetrically arranged at the top end of the annular rack (9), and limiting grooves (15) are symmetrically arranged on the side faces of the annular rack (9).
CN201911099556.XA 2019-11-12 2019-11-12 Forging process for high-temperature alloy plate blank difficult to deform Active CN110802189B (en)

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CN112845744B (en) * 2021-01-05 2022-04-08 中国第一重型机械股份公司 Preparation method of metal solid-solid composite additive blank

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0087183A1 (en) * 1982-02-18 1983-08-31 BBC Aktiengesellschaft Brown, Boveri & Cie. Method to produce a fine-grained object as a finished article consisting of an austenitic, high-temperature strength nickel-base alloy
CN102251146A (en) * 2011-07-14 2011-11-23 北京航空航天大学 Nickel-titanium-aluminum-based high-temperature alloy material and isothermal forging preparation method thereof
CN102303083A (en) * 2011-06-30 2012-01-04 钢铁研究总院 Quick isothermal forging method and device for preparing less-deformable alloy cake blank
CN103302214A (en) * 2013-06-14 2013-09-18 北京科技大学 Difficultly-deformed nickel-based superalloy superplastic forming method
CN105344901A (en) * 2015-12-16 2016-02-24 中国第二重型机械集团德阳万航模锻有限责任公司 Manufacturing method of high-temperature alloy disc-shaped forging with diameter greater than or equal to 1800 mm
CN105397002A (en) * 2015-12-02 2016-03-16 贵州安大航空锻造有限责任公司 Isothermal forging forming method of high-temperature alloy complex sheet forging
CN106607529A (en) * 2015-10-27 2017-05-03 陕西宏远航空锻造有限责任公司 Forging method for high-temperature alloy biscuits
CN109622865A (en) * 2018-12-11 2019-04-16 陕西宏远航空锻造有限责任公司 A kind of forging method of aero-engine GH4169 system high-temperature alloy turbine disc

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0087183A1 (en) * 1982-02-18 1983-08-31 BBC Aktiengesellschaft Brown, Boveri & Cie. Method to produce a fine-grained object as a finished article consisting of an austenitic, high-temperature strength nickel-base alloy
CN102303083A (en) * 2011-06-30 2012-01-04 钢铁研究总院 Quick isothermal forging method and device for preparing less-deformable alloy cake blank
CN102251146A (en) * 2011-07-14 2011-11-23 北京航空航天大学 Nickel-titanium-aluminum-based high-temperature alloy material and isothermal forging preparation method thereof
CN103302214A (en) * 2013-06-14 2013-09-18 北京科技大学 Difficultly-deformed nickel-based superalloy superplastic forming method
CN106607529A (en) * 2015-10-27 2017-05-03 陕西宏远航空锻造有限责任公司 Forging method for high-temperature alloy biscuits
CN105397002A (en) * 2015-12-02 2016-03-16 贵州安大航空锻造有限责任公司 Isothermal forging forming method of high-temperature alloy complex sheet forging
CN105344901A (en) * 2015-12-16 2016-02-24 中国第二重型机械集团德阳万航模锻有限责任公司 Manufacturing method of high-temperature alloy disc-shaped forging with diameter greater than or equal to 1800 mm
CN109622865A (en) * 2018-12-11 2019-04-16 陕西宏远航空锻造有限责任公司 A kind of forging method of aero-engine GH4169 system high-temperature alloy turbine disc

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Address after: 054800 No.16, Huagong Avenue, Qinghe County, Xingtai City, Hebei Province

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