CN116274773A - Method for rolling and forming nickel-based superalloy ring forging by adopting cast ring blank - Google Patents
Method for rolling and forming nickel-based superalloy ring forging by adopting cast ring blank Download PDFInfo
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- CN116274773A CN116274773A CN202310075279.9A CN202310075279A CN116274773A CN 116274773 A CN116274773 A CN 116274773A CN 202310075279 A CN202310075279 A CN 202310075279A CN 116274773 A CN116274773 A CN 116274773A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
- B21H1/00—Making articles shaped as bodies of revolution
- B21H1/06—Making articles shaped as bodies of revolution rings of restricted axial length
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Abstract
The invention discloses a method for rolling and forming a nickel-based superalloy ring forging by adopting a casting ring blank, which comprises the following steps: casting into a casting ring blank by using alloy liquid, and packaging when the temperature of the casting ring blank is reduced to 800 ℃, hot cutting to remove a casting head system, and homogenizing to reach 1120 ℃; starting a ring rolling machine to roll a cast ring blank to rapidly widen the cast ring blank along the radial direction, detecting the edge temperature of the cast ring blank by a temperature compensating device, compensating the temperature, and completing the first rolling when the deformation reaches 60 percent, and cooling the cast ring blank to 1050 ℃; continuously rolling and supplementing temperature to widen the cast ring blank at a medium speed along the radial direction, and completing second-pass rolling after the deformation amount reaches 40% relative to the cast ring blank after the first-pass rolling, wherein the cast ring blank is cooled to 1010 ℃; and then rolling and temperature compensation are continued, so that the cast ring blank is widened slowly in the radial direction, and the third rolling is completed after the deformation amount reaches 20% relative to the cast ring blank after the second-pass rolling, and the cast ring blank is rolled into a ring forging. The method is mainly used for roll forming of the ring forging in the fields of aviation, aerospace and the like.
Description
Technical Field
The invention relates to a rolling method of a ring forging, in particular to a method for rolling and forming a nickel-based superalloy ring forging by adopting a casting ring blank.
Background
Along with the development of modern aviation, aerospace, gas turbines, ships, wind energy and other high-end equipment, a great deal of requirements on high-temperature alloy ring forgings and the requirements on energy consumption double-control work in the metallurgical and forging industries for achieving the goals of carbon peak reaching and carbon neutralization, the manufacturing of ring forgings is currently developing towards the directions of high quality, precision, high efficiency, energy conservation, environmental protection and low cost so as to adapt to the development trend of high quality, long service life and low cost of modern high-end equipment.
At present, to manufacture a high-temperature alloy ring forging, firstly smelting high-temperature alloy liquid, casting the high-temperature alloy liquid into an ingot, rolling the ingot into a bar, blanking the bar, then manufacturing a blank, and finally rolling the blank into the ring forging, wherein the process is very complicated, as described in the following prior art documents:
the invention patent specification CN113999982A published in 2.2022 and 1.A discloses a smelting process of GH4169 alloy cast ingot, which comprises the following steps: GH4169 alloy raw material, vacuum induction melting, VIM electrode rod, annealing treatment, electroslag remelting melting, P-ESR electrode rod, annealing treatment, vacuum arc remelting and GH4169 self-consumption blooming (namely ingot casting).
The invention patent specification CN114918271A published in 2022, 8 and 19 discloses a GH4169 high-temperature alloy hot rolled bar blank and a preparation method thereof, wherein the method comprises the following steps: triple smelting GH4169 alloy liquid, casting ingot, high-temperature homogenization heat treatment, drawing and cogging forging for 5-7 times by fire, continuous furnace return rolling for 2 times by fire, and GH4169 alloy hot-rolled bar billet.
The invention patent specification CN101279346A of China disclosed in 10 months and 8 days of 2008 discloses a rolling forming method of a nickel-based superalloy special-shaped ring forging, which comprises the following steps: high-temperature alloy bar stock (namely hot rolled bar stock), blanking according to specifications, heating, upsetting, solid round cakes, punching, hollow round cakes, heating, rolling a rectangular ring blank, heating, rolling a rectangular pre-rolled blank, heating and rolling a ring forging.
The method disclosed in the above three prior art documents is known: casting ingot from smelting high-temperature alloy liquid, performing high-temperature homogenization heat treatment, and rolling into a ring forging, wherein the final forming can be realized after 5-7 times of hot drawing and cogging forging, 2 times of continuous furnace return rolling into a hot rolled bar blank, one time of blanking, 1 time of heating and upsetting, 1 time of punching, 2 times of heating and rolling blank, and 1 time of heating and rolling the ring forging. The working procedures are very numerous and complicated, which is not beneficial to controlling the quality of products, equipment such as a forging press, a metal blanking machine and the like are required to be added, the production period is longer, a large amount of investment of manpower and material resources is required, the production efficiency is reduced, the production cost is increased, and the market competition is not facilitated; the main point is that the heating needs to be carried out for multiple times, so that the energy consumption is high, and a large amount of waste gas generated by heating natural gas and the like is unfavorable for environmental protection, so that the targets of carbon peak and carbon neutralization and the requirements on energy consumption double-control work in metallurgical and forging industries cannot be realized.
In addition, because the high-temperature alloy cast ingot has great stress during solidification and shrinkage, especially after the high temperature is reduced to normal temperature, the internal stress is further increased, the stress is difficult to thoroughly eliminate by annealing treatment, and the subsequent forging and rolling with a plurality of fires can cause the internal stress to be overlapped layer by layer after the high-temperature alloy cast ingot is finally formed into a ring forging, so that the stress state becomes extremely complex and uncontrollable, and the ring forging is easy to crack and deform to be scrapped when being machined into parts.
When the ring forging is rolled by adopting the rolling forming method of the nickel-based superalloy special-shaped ring forging disclosed in the above CN101279346A, as the rolling process is carried out in an open space environment, the temperature of the surfaces of the pre-rolled blank, especially the positions of four corner edges at the intersections of the upper surface and the lower surface with the inner ring surface and the outer ring surface, is reduced rapidly due to rapid heat dissipation, and the heat generated by metal deformation is concentrated in the inner direction due to the fact that the heat dissipation of the inner part of the pre-rolled blank is slower, so that the inner temperature of the pre-rolled blank is reduced slowly.
In summary, the ring forging produced by the method is difficult to meet the manufacturing requirements of high quality, precision, high efficiency, energy conservation, environmental protection and low cost, and is more suitable for the development trend of high quality, long service life and low cost of modern high-end equipment.
Disclosure of Invention
The invention aims to solve the technical problems that the cast ingot blank is directly used for realizing the roll forming method of the nickel-based superalloy ring forging by adopting the cast ring blank, and the roll formed ring forging by adopting the method has few production procedures and high production efficiency.
In order to solve the technical problems, the nickel-based superalloy ring forging disclosed by the invention is formed by adopting a cast ring blank rolling method, and the method comprises the following steps of:
pouring the smelted nickel-based superalloy liquid into a casting ring blank, and directly carrying out homogenization treatment after the casting ring blank is cooled to 800 ℃ and a casting head system is removed by hot cutting so that the temperature of the casting ring blank reaches 1120 ℃;
providing a ring rolling machine and a temperature compensating device, wherein the temperature compensating device mainly comprises a high-frequency heater, a silicon controlled module and a heating arm; the high-frequency heater is provided with a power input end and is connected with the silicon controlled module into a whole, and the silicon controlled module is respectively connected with the heating arm and the infrared thermometer through cables; the heating arm is formed by connecting a U-shaped heating head and an arm body through a telescopic neck, and a U-shaped induction coil is arranged in the U-shaped heating head;
the casting ring blank with the temperature reaching 1120 ℃ is put into a rolling hole pattern formed by a main roller and a core roller in a ring rolling machine, and simultaneously, the groove surface of a U-shaped heating head of a heating arm of a temperature compensating device longitudinally wraps the casting ring blank along the direction of the outer ring surface of the casting ring blank towards the inner ring surface;
starting a ring rolling machine to roll a casting ring blank in a rolling hole with a rolling force of 1000 KN-3000 KN, wherein the casting ring blank rapidly expands in the radial direction at a speed of 10 mm/s-15 mm/s, and a U-shaped heating head of a heating arm of a temperature compensating device always longitudinally wraps the casting ring blank and moves outwards along with the radial expansion of the casting ring blank; when the infrared thermometer of the temperature compensation device detects that the temperature of the edge at the intersection of the upper end face and the outer ring face of the casting ring blank is reduced, the temperature is fed back to the silicon controlled rectifier module, and the silicon controlled rectifier module controls the high-frequency heater to enable the U-shaped heating head of the heating arm to perform induction heating and temperature compensation on the casting ring blank by outputting proper power, so that the temperature of the edge is consistent with the temperature of other parts of the casting ring blank; rolling the cast ring blank in a rolling hole pattern to generate continuous local plastic deformation, and after the deformation amount reaches 60% relative to the cast ring blank before deformation, completing the first rolling, and reducing the temperature of the cast ring blank to 1050 ℃;
rolling and temperature supplementing the cast ring blank with the temperature of 1050 ℃ after the first rolling according to a first rolling method, so that the cast ring blank is widened at a speed of 6-10 mm/s along a radial medium speed, and after the deformation amount reaches 40% relative to the cast ring blank after the first rolling, finishing the second rolling, and cooling the cast ring blank to 1010 ℃;
and rolling and temperature supplementing the cast ring blank with the temperature of 1010 ℃ after the second-pass rolling according to a first-pass rolling method, so that the cast ring blank is widened slowly in the radial direction at the speed of 2 mm/s-6 mm/s, and the third-pass rolling is finished after the deformation amount reaches 20% relative to the cast ring blank after the second-pass rolling, and finally the cast ring blank is rolled into the ring forging.
The material mark of the nickel-based superalloy is GH4169.
The smelting process of the nickel-based superalloy liquid comprises vacuum induction smelting, electroslag remelting and vacuum arc remelting.
The homogenizing treatment process of the casting ring blank comprises the following steps: the casting ring blank with the temperature reaching 800 ℃ is put into a heating furnace to be insulated according to the wall thickness of 0.8min/mm, then the temperature is raised to 1160 ℃ at the heating speed of 6 ℃/min, the temperature is kept for 24 hours, then the temperature is raised to 1195 ℃ at the heating speed of 6 ℃/min, the temperature is kept for 48 hours, and the temperature is slowly cooled to 1120 ℃.
When the method is adopted for rolling, a rolling die can be arranged on the ring rolling machine, and the ring forging rolled by the rolling die is a ring forging with a special-shaped section.
When the method is adopted for rolling, a rolling die can be arranged on the ring rolling machine, and the ring forging rolled by the rolling die is a ring forging with a conical section.
Compared with the prior art, the invention has the following beneficial effects:
the nickel-based superalloy ring forging adopts a ring casting rolling forming method, and the technological span from ingot casting blank to ring forging forming is realized by casting the superalloy liquid subjected to triple smelting into the ring casting, cutting off a casting head system when the ingot casting is hot, homogenizing the ingot casting system when the ingot casting is hot, and then loading the ingot casting into a ring rolling machine to roll the ingot casting into the ring forging when the ingot casting is hot. Compared with the prior art, the process flow from ingot cogging to ring forging rolling is complicated and complex, the heating fire is more, the equipment investment is more, the processing period is long, the waste of resources and energy is large, the production cost is high, the market competitiveness is weak and the like, and a plurality of complicated procedures and heating processes of ingot cogging forging, bar billet rolling, blanking, upsetting, punching, pre-rolling and the like are saved. The method has the advantages of simple process flow, easy control of product quality, less equipment investment, short production period, less consumption of resources and energy sources, less exhaust gas emission, low manufacturing cost and strong market competitiveness, and the produced ring forging has the structure which is further equiaxed and refined, and the grain size can reach higher grade, thereby greatly improving the performance of the ring forging.
The casting ring blank is always at a high temperature of more than 800 ℃ from casting forming and homogenization treatment to rolling, that is, the casting ring blank has only thermal stress and is relatively controllable, and no internal stress which is greatly increased when the casting ring blank is reduced to normal temperature is generated. During rolling, the cast ring blank is rapidly widened and deformed by 60% in the radial direction at a rolling temperature of 1120 ℃ and a rolling speed of 10-15 mm/s in the first pass, is widened and deformed by 40% in the radial direction at a rolling temperature of 1050 ℃ and a rolling speed of 6-10 mm/s in the second pass, and is widened and deformed by 20% in the radial direction at a rolling temperature of 1010 ℃ and a rolling speed of 2-6 mm/s in the third pass; by adopting the method of high-temperature rapid large-deformation rolling, moderate Wen Zhongsu proper-deformation rolling and low-temperature slow-speed small-deformation rolling, the temperature of each part of the cast ring blank can be kept consistent by the temperature supplementing device during rolling, so that the material flow, the temperature, the deformation quantity, the deformation speed and other thermodynamic parameters of each part of the cast ring blank in the same section in the rolling process can be reasonably controlled, the cast ring blank can be fully deformed and well filled, the thermal stress generated by the cast ring blank in solidification shrinkage can be effectively relieved and released, the stress of the rolled ring forging can be uniformly distributed, the cast ring blank has uniform microstructure and performance in the circumferential direction in the rolling process, the effects of rolling deformation, tissue evolution and uniform stress coupling release distribution are obtained, the conditions of cracking and deformation of the ring forging in the mechanical processing of parts can be effectively improved, and the rejection rate is reduced.
According to the invention, the rolling die is arranged on the ring rolling machine, so that ring forgings such as ring forgings with special-shaped cross sections, ring forgings with conical cross sections and the like can be rolled, and precision rolling forming is realized.
In conclusion, the method disclosed by the invention can meet the manufacturing requirements of high quality, precision, high efficiency, energy conservation, environmental protection and low cost of the ring forging and adapt to the development trend of high quality, long service life and low cost of modern high-end equipment.
Drawings
The invention will be described in further detail with reference to the drawings and the detailed description.
FIG. 1 is a block diagram of a cast ring blank formed by casting a molten nickel-base superalloy.
Fig. 2 is a schematic view of the ring binder machine shown in fig. 1.
FIG. 3 is a schematic illustration of the process of rolling the cast ring blank shown in FIG. 1 into a ring forging.
Detailed Description
The method for carrying out the roll forming of the nickel-based superalloy ring forging by adopting the cast ring blank requires equipment such as a smelting furnace, a hot cutting machine, a forging heating furnace, a temperature compensating device, a ring rolling machine, a mechanical arm and the like.
The following will take a nickel-based superalloy with the material grade GH4169 as an example to describe the process steps from smelting to preparing a cast ring blank to producing a ring forging of the alloy:
step one: smelting and blanking.
As shown in fig. 1, a GH4169 alloy liquid smelted by adopting a vacuum induction smelting, electroslag remelting and vacuum arc remelting process is poured into a casting ring blank 100, and after the casting ring blank 100 is cooled to 800 ℃, a casting head system is removed by hot cutting, homogenization treatment is carried out according to the following process: the cast ring blank 100 with the temperature reaching 800 ℃ is put into a heating furnace to be insulated according to the wall thickness of 0.8min/mm, then the temperature is raised to 1160 ℃ at the heating speed of 6 ℃/min, the temperature is kept for 24 hours, then the temperature is raised to 1195 ℃ at the heating speed of 6 ℃/min, the temperature is kept for 48 hours, and the slow cooling is carried out to 1120 ℃. At this time, the cast ring blank 100 has a structure in which three kinds of crystal grains of fine crystals, columnar crystals and a small amount of equiaxed crystals are layered.
Step two: and (5) blank loading.
As shown in fig. 2, the cast ring blank 100 slowly cooled to 1120 ℃ in the first step is put into a rolling hole pattern consisting of a main roll 101 and a core roll 102 in a ring rolling machine, the ring rolling machine is started to rotate the main roll 101, and then the core roll 102 is translated towards the main roll 101; meanwhile, the upper cone roll 104 and the lower cone roll 105 are driven by the ring rolling machine to rotate and clamp the upper end face and the lower end face of the casting ring blank 100, so that the two holding rolls 103 of the ring rolling machine support the outer circumferential surface of the casting ring blank 100.
In order to make the temperature of the casting ring blank 100, especially the four edges at the intersection of the upper and lower surfaces and the inner and outer ring surfaces, can be compensated during the rolling process, the invention also provides a temperature compensation device 200. As shown in fig. 2, the temperature compensating device 200 mainly comprises a high-frequency heater 201, a silicon controlled module 202 and a heating arm 203; the high-frequency heater 201 is provided with a power input end 204 and is connected with the silicon controlled module 202 into a whole, and the silicon controlled module 202 is respectively connected with the heating arm 203 and the infrared thermometer 205 through cables; the heating arm 203 is formed by connecting a U-shaped heating head 203a and an arm body 203c through a telescopic neck 203b, and the U-shaped heating head 203a is internally provided with a U-shaped induction coil.
After the cast ring blank 100 is put into the ring rolling mill, the groove surfaces of the U-shaped heating heads 203a of the temperature compensating device 200 are longitudinally wrapped around the cast ring blank 100 along the outer annular surface of the cast ring blank 100 towards the inner annular surface, and the whole installation process of the cast ring blank 100 is completed. The groove surface of the U-shaped heating head 203a is in clearance fit with the casting ring blank 100, namely, the casting ring blank 100 can rotate in the groove surface of the U-shaped heating head 203 a. In the rolling process of the casting ring blank 100, the infrared thermometer 205 feeds back the detected temperature to the silicon controlled rectifier module 202, and the silicon controlled rectifier module 202 controls the output power of the high-frequency heater 201 to enable the U-shaped heating head 203a of the heating arm 203 to perform induction heating and temperature compensation on the casting ring blank 100 through an induction coil in the heating arm 203.
Step three: and rolling the blank.
And rolling for the first time. As shown in fig. 2 and 3, the ring rolling mill is started to drive the main rolls 101 to rotate the casting ring blank 100, the core rolls 102 and the two holding rolls 103, and the upper and lower conical rolls 104 and 105 rotate together with the upper and lower end surfaces of the rotating casting ring blank 100; the core roller 102 performs feeding motion towards the main roller 101 along the radial direction to enable the core roller 102 and the main roller 101 to roll the casting ring blank 100 in a rolling hole with the rolling force of 1000 KN-3000 KN, the casting ring blank 100 rapidly expands along the radial direction at the speed of 10 mm/s-15 mm/s, the wall thickness of the casting ring blank 100 is gradually reduced, and the upper cone roller 104, the lower cone roller 105 and the two holding rollers 103 move outwards along with the radial expansion of the casting ring blank 100; meanwhile, the U-shaped heating head 203a of the heating arm 203 of the temperature compensating device 200 always longitudinally wraps the casting ring blank 100 and is necked down towards the arm body 203c along with the stretching of the casting ring blank 100 through the telescopic neck 203b, namely the U-shaped heating head 203a also moves outwards along with the radial stretching of the casting ring blank 100; when the infrared thermometer 205 of the temperature compensating device 200 detects that the temperature of the edge at the intersection of the upper end surface and the outer ring surface of the casting ring blank 100 is reduced during rolling, the temperature is fed back to the silicon controlled rectifier module 202, and the silicon controlled rectifier module 202 controls the high-frequency heater 201 to enable the U-shaped heating head 203a of the heating arm 203 to perform induction heating and temperature compensation on the casting ring blank 100 by outputting proper power, so that the temperature of the edge is consistent with the temperature of other parts of the casting ring blank 100. Since the temperatures of the upper and lower edges of the outer ring surface and the upper and lower edges of the inner ring surface of the cast ring 100 are very close, it is only necessary to detect the temperature of one edge. The cast ring blank 100 is rolled in the rolling pass to generate continuous local plastic deformation, when the deformation amount reaches 60% relative to the cast ring blank 100 before deformation, the first rolling is completed, the temperature of the cast ring blank 100 is reduced to 1050 ℃, at this time, the structure of the cast ring blank 100 is converted from an as-cast structure to a forged structure, a small amount of incomplete recrystallization structure exists, the grain size is relatively uniform and coarse, the average grain size is less than level 2, and the level difference is less than level 3.
And rolling in the second pass. Rolling and temperature supplementing the cast ring blank 100 with the temperature of 1050 ℃ after the first rolling according to the method of the first rolling to ensure that the cast ring blank 100 widens at a speed of 6 mm/s-10 mm/s along the radial middle speed, finishing the second rolling after the deformation reaches 40% relative to the cast ring blank 100 after the first rolling, reducing the temperature of the cast ring blank 100 to 1010 ℃, and further reducing the temperature to roll and deform, wherein the structure of the cast ring blank 100 realizes complete equiaxial and refinement, and the average grain size reaches 4-6 levels.
And rolling for the third time. The cast ring blank 100 with the temperature of 1010 ℃ after the second pass rolling is rolled and supplemented with temperature according to the first pass rolling method, so that the cast ring blank 100 is widened along the radial direction at a low speed of 2 mm/s-6 mm/s, when the deformation amount reaches 20% relative to the cast ring blank 100 after the second pass rolling, the third pass rolling is completed, the cast ring blank 100 realizes the final rolling, the structure of the cast ring blank 100 is further equiaxed and thinned, the cast ring blank 100 is deformed into a ring forging 300, and the average grain size of the ring forging 300 reaches 8-10 levels. The finishing temperature is greater than 950 ℃.
The three pass rolling process is a continuous process, rather than three independent or three fire rolling, i.e., the cast ring blank 100 is continuously rolled into the ring forging 300 after being fed into the ring rolling machine, and is described as being divided into three passes primarily in terms of temperature, stretching speed, deformation and texture variations, so as to more clearly describe the overall rolling process.
After all the rotating parts are stopped, the main roller 101, the upper conical roller 104, the lower conical roller 105, the two holding rollers 103, the U-shaped heating heads of the heating arms 203 of the temperature compensating device 200 and the cantilever of the ring rolling machine pressed on the top of the core roller 102 are removed, and the ring forging 300 is taken out from the top of the core roller 102.
The method is not limited to rolling the shape of the ring forging, and for ring forgings with different shapes, such as ring forgings with special-shaped cross sections, ring forgings with conical cross sections and the like, precision rolling forming can be realized by adopting the method only by installing corresponding rolling dies on a ring rolling machine.
Claims (6)
1. The method for rolling and forming the nickel-based superalloy ring forging by adopting the cast ring blank is characterized by comprising the following steps of:
pouring the smelted nickel-based superalloy liquid into a casting ring blank, and directly carrying out homogenization treatment after the casting ring blank is cooled to 800 ℃ and a casting head system is removed by hot cutting so that the temperature of the casting ring blank reaches 1120 ℃;
providing a ring rolling machine and a temperature compensating device, wherein the temperature compensating device mainly comprises a high-frequency heater, a silicon controlled module and a heating arm; the high-frequency heater is provided with a power input end and is connected with the silicon controlled module into a whole, and the silicon controlled module is respectively connected with the heating arm and the infrared thermometer through cables; the heating arm is formed by connecting a U-shaped heating head and an arm body through a telescopic neck, and a U-shaped induction coil is arranged in the U-shaped heating head;
the casting ring blank with the temperature reaching 1120 ℃ is put into a rolling hole pattern formed by a main roller and a core roller in a ring rolling machine, and simultaneously, the groove surface of a U-shaped heating head of a heating arm of a temperature compensating device longitudinally wraps the casting ring blank along the direction of the outer ring surface of the casting ring blank towards the inner ring surface;
starting a ring rolling machine to roll a casting ring blank in a rolling hole with a rolling force of 1000 KN-3000 KN, wherein the casting ring blank rapidly expands in the radial direction at a speed of 10 mm/s-15 mm/s, and a U-shaped heating head of a heating arm of a temperature compensating device always longitudinally wraps the casting ring blank and moves outwards along with the radial expansion of the casting ring blank; when the infrared thermometer of the temperature compensation device detects that the temperature of the edge at the intersection of the upper end face and the outer ring face of the casting ring blank is reduced, the temperature is fed back to the silicon controlled rectifier module, and the silicon controlled rectifier module controls the high-frequency heater to enable the U-shaped heating head of the heating arm to perform induction heating and temperature compensation on the casting ring blank by outputting proper power, so that the temperature of the edge is consistent with the temperature of other parts of the casting ring blank; rolling the cast ring blank in a rolling hole pattern to generate continuous local plastic deformation, and after the deformation amount reaches 60% relative to the cast ring blank before deformation, completing the first rolling, and reducing the temperature of the cast ring blank to 1050 ℃;
rolling and temperature supplementing the cast ring blank with the temperature of 1050 ℃ after the first rolling according to a first rolling method, so that the cast ring blank is widened at a speed of 6-10 mm/s along a radial medium speed, and after the deformation amount reaches 40% relative to the cast ring blank after the first rolling, finishing the second rolling, and cooling the cast ring blank to 1010 ℃;
and rolling and temperature supplementing the cast ring blank with the temperature of 1010 ℃ after the second-pass rolling according to a first-pass rolling method, so that the cast ring blank is widened slowly in the radial direction at the speed of 2 mm/s-6 mm/s, and the third-pass rolling is finished after the deformation amount reaches 20% relative to the cast ring blank after the second-pass rolling, and finally the cast ring blank is rolled into the ring forging.
2. The method of forming a nickel-base superalloy ring forging by cast ring blank rolling as set forth in claim 1, wherein the nickel-base superalloy is identified by the material designation GH4169.
3. The method for rolling and forming the nickel-base superalloy ring forging by adopting a casting ring blank according to claim 1, wherein the smelting process of the nickel-base superalloy liquid is vacuum induction smelting, electroslag remelting and vacuum arc remelting.
4. The method for rolling and forming the nickel-based superalloy ring forging by using a casting ring blank according to claim 1, wherein the homogenization treatment process of the casting ring blank is as follows: the casting ring blank with the temperature reaching 800 ℃ is put into a heating furnace to be insulated according to the wall thickness of 0.8min/mm, then the temperature is raised to 1160 ℃ at the heating speed of 6 ℃/min, the temperature is kept for 24 hours, then the temperature is raised to 1195 ℃ at the heating speed of 6 ℃/min, the temperature is kept for 48 hours, and the temperature is slowly cooled to 1120 ℃.
5. The method of rolling and forming a nickel-base superalloy ring forging by using a cast ring blank according to any of claims 1 to 4, wherein a rolling die is mounted on the ring rolling machine, and the ring forging rolled by using the rolling die is a ring forging with a special-shaped cross section.
6. The method of roll forming a nickel-base superalloy ring forging using a cast ring blank as recited in any one of claims 1 to 4, wherein a rolling die is mounted on the ring rolling machine, and the ring forging rolled using the rolling die is a tapered section ring forging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310075279.9A CN116274773A (en) | 2023-02-07 | 2023-02-07 | Method for rolling and forming nickel-based superalloy ring forging by adopting cast ring blank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310075279.9A CN116274773A (en) | 2023-02-07 | 2023-02-07 | Method for rolling and forming nickel-based superalloy ring forging by adopting cast ring blank |
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| Publication Number | Publication Date |
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| CN116274773A true CN116274773A (en) | 2023-06-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310075279.9A Pending CN116274773A (en) | 2023-02-07 | 2023-02-07 | Method for rolling and forming nickel-based superalloy ring forging by adopting cast ring blank |
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- 2023-02-07 CN CN202310075279.9A patent/CN116274773A/en active Pending
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