CN113084061A - Nickel-based superalloy GH3536 die forging and forming method thereof - Google Patents
Nickel-based superalloy GH3536 die forging and forming method thereof Download PDFInfo
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- CN113084061A CN113084061A CN202110350650.9A CN202110350650A CN113084061A CN 113084061 A CN113084061 A CN 113084061A CN 202110350650 A CN202110350650 A CN 202110350650A CN 113084061 A CN113084061 A CN 113084061A
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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
- 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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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/10—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of nickel or cobalt or alloys based thereon
Abstract
The invention discloses a nickel-based superalloy GH3536 die forging and a forming method thereof, wherein the forming method comprises the following steps: forming a die forging: heating and insulating the pull rod forging to ensure that the temperature of the pull rod forging is 1120-1160 ℃; carrying out die pressing on the pull rod forging twice, and carrying out edge cutting after secondary die pressing to obtain a first forging stock, wherein the striking energy is 8-16 kJ during primary die pressing, the striking energy is 80-112 kJ during secondary die pressing, and the finish forging temperature of the primary die pressing and the secondary die pressing is not lower than 860 ℃; heating and insulating the first forging stock to ensure that the temperature of the first forging stock is 1120-1160 ℃; carrying out die pressing on the heated and heat-insulated first forging stock, and carrying out trimming after die pressing to obtain a forging piece; wherein the preheating temperature of the die is 350-400 ℃, the finish forging temperature is not lower than 860 ℃, and the striking energy is 64-96 kJ; and carrying out solution heat treatment on the forging to obtain the nickel-based superalloy GH3536 die forging. The invention can improve the grain size grade of the GH3536 die forging, so that the GH3536 die forging meets the use requirement.
Description
Technical Field
The invention belongs to the technical field of material processing, and particularly relates to a nickel-based superalloy GH3536 die forging and a forming method thereof.
Background
The high-temperature alloy is a metal material which takes iron, nickel and cobalt as the base and can work for a long time at a high temperature of more than 600 ℃ under the action of certain stress, and has excellent high-temperature strength, good hot corrosion resistance, good fatigue performance, fracture toughness and other comprehensive properties. The high-temperature alloy is a single austenite structure, has good structure stability and use reliability at various temperatures, is widely applied to the fields of aviation, aerospace, petroleum, chemical engineering, ships and warships and the like, has good high-temperature oxidation resistance, and is mainly used for parts such as flame tubes, combustion chambers and the like of aircraft engines.
In the prior art, a die forging made of a certain nickel-based superalloy GH3536 material has the following defects and shortcomings:
as shown in fig. 1, the die forging is similar to a pistol in shape, and includes a tail thin rod 5, a middle polygonal disc 6 and a head cylinder 7, and the die forging is widely applied in the field of aerospace, is an important part in an engine, and has the requirements of high pressure resistance, long service life, high reliability and high stability in operation, which has very high requirements on the service performance of the die forging after being formed, especially the requirement on the grain size of the die forging after being formed, and the grain size of the die forging after being formed is required to be not less than 4 grade, but the existing forging technology is easy to cause coarse grains after being forged, and cannot meet the use requirements.
Disclosure of Invention
In order to solve the problems in the prior art, the invention aims to provide a nickel-based superalloy GH3536 die forging and a forming method thereof, and the invention can improve the grain size grade of the GH3536 die forging so as to meet the use requirement.
The technical scheme adopted by the invention is as follows:
a method for forming a nickel-based superalloy GH3536 die forging comprises the following steps:
and (3) forming the die forging, wherein the forming of the die forging comprises the following steps:
heating and insulating the pull rod forging to ensure that the temperature of the pull rod forging is 1120-1160 ℃;
carrying out die pressing twice on the heated and heat-preserved pull rod forging, and carrying out edge cutting after secondary die pressing to obtain a first forging stock, wherein the striking energy is 8-16 kJ during primary die pressing, the striking energy is 80-112 kJ during secondary die pressing, and the finish forging temperature of the primary die pressing and the secondary die pressing is not lower than 860 ℃;
heating and insulating the first forging stock to ensure that the temperature of the first forging stock is 1120-1160 ℃;
carrying out die pressing on the heated and heat-insulated first forging stock, and carrying out trimming after die pressing to obtain a forging piece; wherein the preheating temperature of the die is 350-400 ℃, the finish forging temperature is not lower than 860 ℃, and the striking energy is 64-96 kJ;
and carrying out solid solution on the forging to obtain the nickel-based superalloy GH3536 die forging.
Preferably, when the pull rod forging is heated and insulated, the insulation time is 40-80 min.
Preferably, the blank transfer time is less than or equal to 13s in the process of carrying out two-time die pressing on the heated and heat-preserved pull rod forging.
Preferably, in the process of carrying out two-time die pressing on the heated and heat-preserved pull rod forging, after the first die pressing is finished, oxide skins on the surfaces of a die cavity and a blank are removed, and then a lubricant is sprayed for carrying out the second die pressing.
Preferably, the lubricant is a mixture of graphite emulsion and water, and the volume ratio of the graphite emulsion to the water is 1: 4-1: 10.
Preferably, the air gun is used for removing oxide scales on the surfaces of the die cavity and the blank.
Preferably, in the solid solution process of the forge piece, the heat preservation temperature is 1150-1170 ℃, and the heat preservation time is 50-60 min; and (3) performing oil quenching after heat preservation, wherein the oil temperature is not lower than 30-40 ℃.
Preferably, the method for forming the nickel-based superalloy GH3536 die forging further comprises a blank making stage, wherein the blank making stage comprises the following processes:
heating the bar blank to 1120-1160 ℃ along with the furnace, and keeping the temperature for 40-120 min
Preheating the hammer head, the hammer anvil and the tool to 250-380 ℃, forging the bar blank into a bent rod forging, wherein in the forging process, the blank transfer time is not more than 15s, and the final forging temperature is not lower than 860 ℃.
Preferably, the method for forming the nickel-based superalloy GH3536 die forging further comprises a blank making stage, wherein the blank making stage comprises the following processes:
heating the bent rod forging to 1120-1160 ℃ along with the furnace, and preserving heat for 40-100 min;
preheating a hammer head, a hammer anvil and a tool to 250-380 ℃; and (3) pulling the bent rod forging, machining a tail thin rod at one end of the bent rod forging, wherein in the rod pulling process, the heating temperature is 1120-1160 ℃, the blank transfer time is not more than 13s, the finish forging temperature is not lower than 860 ℃, and air cooling is carried out after forging to obtain the rod pulling forging.
The invention also provides a nickel-based high-temperature alloy GH3536 die forging piece, which is prepared by the forming method, and the grain size of the nickel-based high-temperature alloy GH3536 die forging piece reaches 5 grades which are uniform.
The invention has the following technical effects:
the invention relates to a method for forming a nickel-based superalloy GH3536 die forging, which solves the problem of coarse grains of the existing forging by reasonably setting forging parameters such as heating temperature, heat preservation time, forging heat, finish forging temperature, heat treatment system and the like by a system, and improves the product quality, wherein the grain size of the die forging after final forming reaches 5 grades uniformly.
Drawings
FIG. 1 is a rough drawing of the forging profile change of a GH3536 die forging blank machined by the invention;
FIG. 2 is a metallographic diagram of a GH3536 die forging processed according to embodiment 1 of the invention;
FIG. 3 is a metallographic diagram of a GH3536 die forging processed according to embodiment 2 of the invention;
FIG. 4 is a metallographic diagram of a GH3536 die forging processed according to embodiment 3 of the invention;
in the figure, 1-blank, 2-bent rod forging, 3-pull rod forging, 4-compression molding forming rough figure, 5-tail thin rod, 6-middle polygonal disc and 7-head cylinder.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The main process of the forming method of the nickel-based superalloy GH3536 die forging comprises the following steps:
blanking → blank making → die forging forming → grain size detection → general inspection → warehousing
Referring to fig. 1, the specific process is as follows:
blanking by using a sawing machine, placing a bar in a III type electric furnace at 1120-1160 ℃ during blank making, keeping the temperature for 45min at the shortest time, keeping the temperature for 0.4min/mm during hot material returning, keeping the temperature for 120min at the longest time, forging a bent rod by using a 560kg air hammer after the heat preservation is finished, continuously placing a forged piece after the bent rod into the III type electric furnace, heating to 1120-1160 ℃ at the shortest time of 40min, keeping the temperature for 0.4min/mm, keeping the temperature for 80min at the longest time, forging and pulling the rod on a 750kg air hammer after the heat preservation is finished, and air cooling after pulling the rod.
Forming a die forging: placing the forged piece after being pulled into a III-type electric furnace, heating to 1120-1160 ℃, keeping the temperature for 40min at the shortest time, calculating the heat preservation time according to 0.4min/mm when the forged piece is heated in a hot material tempering furnace, keeping the temperature for 80min at the longest time, carrying out die pressing on the forged piece after the heat preservation is finished, placing the blank on a 10MN electric screw press, and then carrying out die pressing, wherein the total impact energy of the equipment is 160KJ, and firstly tapping one hammer, the impact energy: 5% -10%; taking out the blank integrally, rapidly removing oxide skins on the cavity of the upper die and the cavity of the lower die and the surface of the forging piece by using an air gun, using graphite emulsion and water as a lubricant in a volume ratio of 1: 4-1: 10, then pounding again, trimming when the die pressing is hot after the striking energy is 50% -70%, and keeping the finish forging temperature after the die pressing for two times not lower than 860 ℃.
Placing the die forging piece subjected to die pressing with one fire in a class III electric furnace, heating to 1120-1160 ℃, keeping the temperature for 30min at the shortest time, calculating the heat preservation time of 0.4min/mm when the die is heated in a tempering furnace, keeping the temperature for 80min at the longest time, carrying out die pressing with two fire for forming after the heat preservation is finished, wherein the preheating temperature of the die is 350-400 ℃, the preheating time is less than or equal to 5.5h, the blank transfer time is less than or equal to 10s, the finish forging temperature is not less than 850 ℃, placing the blank in a cavity, keeping the blank upright, carrying out die pressing, and striking: 40-60%, trimming the edges while the die is hot after die pressing, and correcting and air cooling the edges after trimming.
Carrying out heat treatment on the forged piece after the die pressing and the second fire, wherein the heat treatment process is to carry out solid solution on the forged piece, and the heating temperature during the solid solution is as follows: and (3) keeping the temperature for 50-60 min at 1150-1170 ℃, and then performing oil quenching, wherein the oil temperature during oil quenching is 30-40 ℃. And cutting the sample to detect the grain size after cooling.
Example 1
The blanking specification of the blank 1 in the implementation is phi 50 multiplied by 112 +/-1 mm;
in the blank making stage: heating the blanks in a III-class electric furnace, charging 20 blanks at 850 ℃, charging at the furnace temperature of 1130 ℃, keeping the temperature for 85min, and preheating the hammer head, the hammer anvil and the tool to 380 ℃. In the bending process: the transfer time of the blank is less than or equal to 15s, the finish forging temperature is 860 ℃, and the blank is air-cooled after being forged; and bending the part 50mm away from the end A during bending to obtain the bent rod forging 2.
In the blank making stage: heating the bent rod forging 2 in a III-type electric furnace, wherein the charging quantity of the bent rod forging 2 is 20, charging at 850 ℃, heating to the heating temperature 1130 ℃ along with the furnace, and keeping the temperature for a period of time: and (5) preheating the hammer head, the hammer anvil and the tool for 50min to 380 ℃. Pulling a rod: forging: as shown in S3 of FIG. 1, a part 30mm away from the B end is divided into two parts; and (3) performing air cooling after the blank transfer time is 13s and the finish forging temperature is 865 ℃, and obtaining the pull rod forging 3.
S4 of FIG. 1 is a drawing of the forged billet after the forming, and the forming process of the forged billet comprises the following steps: the method comprises the following steps: heating: heating the pull rod forge piece 3 in a III-class electric furnace, charging the pull rod forge piece 3 at 850 ℃, and heating to 1130 ℃ along with the furnace; the heat preservation time is 60 min; step two: die pressing, namely, pressing a fire, wherein the blank transfer time is 13s, the finish forging temperature is 860 ℃, the blank is placed right and then die pressing is carried out, a hammer is firstly tapped, and the striking energy is as follows: 14 KJ; and taking out the whole blank, rapidly removing oxide skins on the cavity of the upper die and the cavity of the lower die and the surface of the forge piece by using an air gun, then pounding again, striking energy is 80KJ, and trimming while the blank is hot after die pressing. Step three: heating: heating the workpieces processed in the second step in a class III electric furnace, wherein the charging quantity is 20, the temperature is increased along with the furnace, and the heating temperature is 1130 ℃; the shortest heat preservation time is 30min, and the longest heat preservation time is 70 min; step four: mold pressing is carried out on the second fire, the mold preheating temperature is 380 ℃, the preheating time is 5h, the blank transferring time is 10s, the finish forging temperature is 860 ℃, after the blank is placed in a cavity and is stable, mold pressing is carried out, and the striking energy is as follows: 85KJ, and trimming when the die is hot.
And (3) carrying out solid solution on the forged piece processed in the fourth step, wherein the heat preservation temperature during solid solution is 1160 ℃, the heat preservation time is 55min, oil quenching is adopted during cooling, and the oil temperature during oil quenching is 40 ℃ to obtain the final GH3536 die forged piece.
Grain size detection: cutting a grain size sample with the length of 20 on the GH3536 die forging for detection, and detecting the grain size according to GB/T6394 to obtain the uniform 5-grade grain size after detection. The metallographic diagram of the GH3536 die forging of the embodiment is shown in fig. 2, and as can be seen from fig. 2, the grain size of the structure of the GH3536 die forging produced by the embodiment is uniform grade 5.
Example 2
The blanking specification of the blank 1 in the implementation is phi 55 multiplied by 112 +/-1 mm;
in the blank making stage: heating the blanks in a III-class electric furnace, wherein the charging quantity of the blanks is 10, charging the blanks when the furnace temperature is 850 ℃, heating the blanks to 1140 ℃ along with the furnace, keeping the temperature for 90min, and preheating the hammer head, the hammer anvil and the tool to 390 ℃. In the bending process: the transfer time of the blank is less than or equal to 15s, the finish forging temperature is 870 ℃, and the blank is air-cooled after being forged; and bending the part 50mm away from the end A during bending to obtain the bent rod forging 2.
In the blank making stage: heating the bent rod forging 2 in a III-type electric furnace, wherein the charging quantity of the bent rod forging 2 is 10, charging at 850 ℃, heating to 1140 ℃ along with the furnace, and keeping the temperature for a period of time: and (5) preheating the hammer head, the hammer anvil and the tool for 65min to 390 ℃. Pulling a rod: forging: as shown in S3 of FIG. 1, a part 30mm away from the B end is divided into two parts; and (3) the blank transfer time is 13s, the finish forging temperature is 870 ℃, and air cooling is carried out after forging to obtain the pull rod forging 3.
S4 of FIG. 1 is a drawing of the forged billet after the forming, and the forming process of the forged billet comprises the following steps: the method comprises the following steps: heating: heating the pull rod forge piece 3 in a III-class electric furnace, wherein the charging quantity of the pull rod forge piece 3 is 10, charging at 850 ℃, and heating to 1140 ℃ along with the furnace; the heat preservation time is 60 min; step two: die pressing, namely, pressing a fire, wherein the blank transfer time is 13s, the finish forging temperature is 870 ℃, the blank is placed right and then is die pressed, a hammer is firstly tapped, and the striking energy is as follows: 10 KJ; and taking out the whole blank, rapidly removing oxide skins on the cavity of the upper die and the cavity of the lower die and the surface of the forging by using an air gun, then pounding again, wherein the striking energy is 100 KJ%, and trimming while the blank is hot after die pressing. Step three: heating: heating the workpieces processed in the second step in a class III electric furnace, wherein the number of the workpieces charged in the furnace is 10, and the workpieces are heated along with the furnace, and the heating temperature is 1140 ℃; the shortest heat preservation time is 30min, and the longest heat preservation time is 70 min; step four: and (2) performing mould pressing on a second fire, wherein the preheating temperature of the mould is 390 ℃, the preheating time is 5h, the blank transfer time is 10s, the finish forging temperature is 870 ℃, and after the blank is placed in a cavity and is stable, performing mould pressing, and striking energy: 90KJ, and trimming when the die is hot.
And (3) carrying out solid solution on the forged piece processed in the fourth step, wherein the heat preservation temperature during solid solution is 1150 ℃, the heat preservation time is 50min, oil quenching is adopted during cooling, and the oil temperature during oil quenching is 40 ℃ to obtain the final GH3536 die forged piece.
Grain size detection: cutting a grain size sample with the length of 20 on the GH3536 die forging for detection, and detecting the grain size according to GB/T6394 to obtain the uniform 5-grade grain size after detection. The metallographic diagram of the GH3536 die forging of the embodiment is shown in fig. 2, and as can be seen from fig. 3, the grain size of the structure of the GH3536 die forging produced by the embodiment is uniform grade 5.
Example 3
The blanking specification of the blank 1 in the implementation is phi 50 multiplied by 112 +/-1 mm;
in the blank making stage: heating blanks in a III-class electric furnace, charging 5 blanks at 850 ℃, charging, heating to 1160 ℃ along with the furnace, keeping the temperature for 85min, and preheating a hammer head, a hammer anvil and a tool to 380 ℃. In the bending process: the transfer time of the blank is less than or equal to 13s, the final forging temperature is 880 ℃, and air cooling is carried out after forging; and bending the part 50mm away from the end A during bending to obtain the bent rod forging 2.
In the blank making stage: heating the bent rod forging 2 in a III-type electric furnace, wherein the charging quantity of the bent rod forging 2 is 5, charging at 850 ℃, heating to the heating temperature 1160 ℃ along with the furnace, and the shortest heat preservation time: 40min, the longest heat preservation time: and (5) preheating the hammer head, the hammer anvil and the tool for 100min to 380 ℃. Pulling a rod: forging: as shown in S3 of FIG. 1, a part 30mm away from the B end is divided into two parts; and (3) the blank transfer time is 13s, the finish forging temperature is 880 ℃, and air cooling is performed after forging to obtain the toggle rod forging 3.
S4 of FIG. 1 is a drawing of the forged billet after the forming, and the forming process of the forged billet comprises the following steps: the method comprises the following steps: heating: heating the pull rod forge piece 3 in a III-class electric furnace, charging 5 pull rod forge pieces 3 at 850 ℃, and heating to 1160 ℃ along with the furnace; the shortest heat preservation time is 40 min; the longest heat preservation time is 80 min. Step two: die pressing, namely, pressing a fire, wherein the blank transfer time is 13s, the finish forging temperature is 880 ℃, the blank is placed right and then die pressing is carried out, a hammer is firstly tapped, and the striking energy is as follows: 16 KJ; and taking out the whole blank, rapidly removing oxide skins on the die cavities of the upper die and the lower die and the surface of the forge piece by using an air gun, then pounding again, striking energy is 112KJ, and trimming while the blank is hot after die pressing. Step three: heating: heating the workpieces processed in the second step in a class III electric furnace, wherein the charging quantity is 5, the temperature is raised along with the furnace, and the heating temperature is 1160 ℃; the shortest heat preservation time is 30min, and the longest heat preservation time is 70 min; step four: and (2) carrying out mould pressing on a second fire, wherein the mould preheating temperature is 400 ℃, the preheating time is 5h, the blank transfer time is 10s, the finish forging temperature is 880 ℃, and after the blank is placed in a cavity and is stable, carrying out mould pressing, and striking energy: 96KJ, and trimming when the die is hot.
And (3) carrying out solid solution on the forged piece processed in the fourth step, wherein the heat preservation temperature during solid solution is 1170 ℃, the heat preservation time is 60min, oil quenching is adopted during cooling, and the oil temperature during oil quenching is 40 ℃ to obtain the final GH3536 die forged piece.
Grain size detection: cutting a grain size sample with the length of 20 on the GH3536 die forging for detection, and detecting the grain size according to GB/T6394 to obtain the uniform 5-grade grain size after detection. The metallographic diagram of the GH3536 die forging of the embodiment is shown in fig. 2, and as can be seen from fig. 4, the grain size of the structure of the GH3536 die forging produced by the embodiment is uniform grade 5.
In conclusion, the grain size of the GH3536 die forging after forming is improved by adjusting the forging parameters, the forging heat number, changing the deformation, controlling the transfer time, the finish forging temperature, the hammer anvil preheating temperature and other key points of the forging process.
Claims (10)
1. A method for forming a nickel-based superalloy GH3536 die forging is characterized by comprising the following steps:
and (3) forming the die forging, wherein the forming of the die forging comprises the following steps:
heating and insulating the pull rod forging (3) to ensure that the temperature of the pull rod forging (3) is 1120-1160 ℃;
carrying out mould pressing twice on the heated and heat-preserved pull rod forging (3), and carrying out edge cutting after the second mould pressing to obtain a first forging stock, wherein the striking energy is 8-16 kJ during the first mould pressing, the striking energy is 80-112 kJ during the second mould pressing, and the finish forging temperature of the first mould pressing and the second mould pressing is not lower than 860 ℃;
heating and insulating the first forging stock to ensure that the temperature of the first forging stock is 1120-1160 ℃;
carrying out die pressing on the heated and heat-insulated first forging stock, and carrying out trimming after die pressing to obtain a forging piece; wherein the preheating temperature of the die is 350-400 ℃, the finish forging temperature is not lower than 860 ℃, and the striking energy is 64-96 kJ;
and carrying out solid solution on the forging to obtain the nickel-based superalloy GH3536 die forging.
2. The forming method of the nickel-based superalloy GH3536 die forging according to claim 1, wherein the heat preservation time is 40-80 min when the pull rod forging (3) is heated and preserved.
3. The forming method of the nickel-based superalloy GH3536 die forging according to claim 1, wherein the blank transfer time is not more than 13s in the two-time die pressing process of the heated and heat-preserved pull rod forging (3).
4. The forming method of the nickel-based superalloy GH3536 die forging according to claim 1, wherein the heated and heat-preserved pull rod forging (3) is subjected to two-time die pressing, oxide skins on a die cavity and a blank surface are removed after the first die pressing is finished, and then the second die pressing is performed after a lubricant is sprayed.
5. The forming method of the nickel-based superalloy GH3536 die forging as claimed in claim 4, wherein the lubricant is a mixture of graphite emulsion and water, and the volume ratio of the graphite emulsion to the water is 1: 4-1: 10.
6. The forming method of the nickel-based superalloy GH3536 die forging of claim 4, wherein an air gun is used for removing oxide skin on the surfaces of a die cavity and a blank.
7. The method for forming the nickel-based superalloy GH3536 die forging according to any one of claims 1 to 6, wherein in the process of solution treatment of the forging, the heating temperature is 1150-1170 ℃, and the holding time is 50-60 min; oil quenching is adopted after heat preservation, and the oil temperature is 30-40 ℃.
8. The method for forming the nickel-base superalloy GH3536 die forging, as claimed in claim 1, further comprising a blank making stage, wherein the blank making stage comprises the following processes:
heating the bar blank to 1120-1160 ℃ along with the furnace, and keeping the temperature for 40-120 min;
preheating a hammer head, a hammer anvil and a tool to 250-380 ℃, forging the bar blank into a bent rod forging piece (2), wherein in the forging process, the blank transfer time is not more than 15s, and the finish forging temperature is not lower than 860 ℃.
9. The forming method of the nickel-base superalloy GH3536 die forging of claim 8, further comprising a blank making stage, wherein the blank making stage comprises the following processes:
heating the bent rod forging (2) to 1120-1160 ℃ along with the furnace, and preserving heat for 40-100 min;
preheating a hammer head, a hammer anvil and a tool to 250-380 ℃, carrying out rod pulling on the bent rod forging piece (2), processing a tail thin rod (5) at one end of the bent rod forging piece (2), wherein the heating temperature is 1120-1160 ℃ in the rod pulling process, the blank transfer time is not more than 13s, the finish forging temperature is not less than 860 ℃, and carrying out air cooling after forging to obtain the rod pulling forging piece (3).
10. The die forging of the nickel-based superalloy GH3536 is characterized in that the die forging of the nickel-based superalloy GH3536 is manufactured through the forming method of any one of claims 1 to 9, and the grain size of the die forging of the nickel-based superalloy GH3536 reaches a uniform grade 5.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114130936A (en) * | 2021-10-30 | 2022-03-04 | 贵州通用航空有限责任公司 | Reinforced composite material for light aircraft main landing gear and manufacturing method thereof |
| CN114226613A (en) * | 2021-12-06 | 2022-03-25 | 陕西宏远航空锻造有限责任公司 | Forging method of 7 type AerMet100 ultrahigh-strength steel forging |
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| CN114130936A (en) * | 2021-10-30 | 2022-03-04 | 贵州通用航空有限责任公司 | Reinforced composite material for light aircraft main landing gear and manufacturing method thereof |
| CN114226613A (en) * | 2021-12-06 | 2022-03-25 | 陕西宏远航空锻造有限责任公司 | Forging method of 7 type AerMet100 ultrahigh-strength steel forging |
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