CN112439825A - Cold-state forming method for nickel-based superalloy C250 steel thin-wall ellipsoid - Google Patents
Cold-state forming method for nickel-based superalloy C250 steel thin-wall ellipsoid Download PDFInfo
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- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 title claims abstract description 42
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 39
- 239000010959 steel Substances 0.000 title claims abstract description 39
- 238000000034 method Methods 0.000 title claims abstract description 31
- 229910052759 nickel Inorganic materials 0.000 title claims abstract description 21
- 229910000601 superalloy Inorganic materials 0.000 title claims abstract description 18
- 238000009987 spinning Methods 0.000 claims abstract description 63
- 239000000243 solution Substances 0.000 claims abstract description 18
- 239000011265 semifinished product Substances 0.000 claims abstract description 14
- 238000007514 turning Methods 0.000 claims abstract description 9
- 239000006104 solid solution Substances 0.000 claims abstract description 7
- 238000005520 cutting process Methods 0.000 claims abstract description 5
- 238000005482 strain hardening Methods 0.000 claims abstract description 5
- 238000003825 pressing Methods 0.000 claims description 18
- 238000001816 cooling Methods 0.000 claims description 16
- 238000000137 annealing Methods 0.000 claims description 8
- 238000001514 detection method Methods 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 238000005242 forging Methods 0.000 claims description 4
- 238000010008 shearing Methods 0.000 claims description 4
- 230000003746 surface roughness Effects 0.000 claims description 4
- 238000004321 preservation Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 9
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 239000000047 product Substances 0.000 abstract description 3
- 238000004904 shortening Methods 0.000 abstract description 2
- 230000035882 stress Effects 0.000 description 6
- 229910001240 Maraging steel Inorganic materials 0.000 description 4
- 229910000797 Ultra-high-strength steel Inorganic materials 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 230000007123 defense Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 229910000734 martensite Inorganic materials 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 229910000746 Structural steel Inorganic materials 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910000765 intermetallic Inorganic materials 0.000 description 1
- UGKDIUIOSMUOAW-UHFFFAOYSA-N iron nickel Chemical compound [Fe].[Ni] UGKDIUIOSMUOAW-UHFFFAOYSA-N 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002436 steel type Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/20—Deep-drawing
- B21D22/22—Deep-drawing with devices for holding the edge of the blanks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/14—Spinning
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/20—Deep-drawing
- B21D22/208—Deep-drawing by heating the blank or deep-drawing associated with heat treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
- C21D1/30—Stress-relieving
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
- C21D1/32—Soft annealing, e.g. spheroidising
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Child & Adolescent Psychology (AREA)
- Forging (AREA)
Abstract
The invention discloses a cold-state forming method of a nickel-based superalloy C250 steel thin-wall ellipsoid, which comprises the following steps: 1) finely turning a cylindrical forged ring according to the spinning process requirement, and then carrying out solution treatment on the forged ring; 2) mounting the spinning blank on a core mold, pushing the spinning blank to clamp the forged ring in place; 3) spinning the forged ring for three times to form a spinning cylinder section; 4) demolding the spinning cylinder section, and carrying out solid solution treatment to eliminate spinning processing stress; 5) cutting the spinning cylinder section into arc plates to prepare a drawn steel plate blank; 6) placing a drawing steel plate blank on a female die of a drawing die and centering; 7) drawing for the first time; 8) carrying out solution treatment on the semi-finished product of the drawing piece to eliminate work hardening stress; 9) and (5) performing secondary drawing. The cold-state forming method of the nickel-based superalloy C250 steel thin-wall ellipsoid is simple in process flow, stable and controllable in product quality, and capable of improving the material utilization rate and shortening the production period of a single piece.
Description
Technical Field
The invention relates to the technical field of ellipsoid forming, in particular to a cold forming method of a nickel-based superalloy C250 steel thin-wall ellipsoid.
Background
The air missile is one of modern main weapons for aviation soldiers to carry out air assault, can be launched from the enemy air defense weapon beyond the range, reduces the threat of ground air defense firepower to the aerial carrier, and has the advantages of higher target damage probability, strong maneuverability and good concealment. In order to improve the hitting range and the penetration capability of the missile weapon, the engine is required to provide larger range and speed for the missile weapon, and the weight of the shell is optimal in light weight, material saving and compact structure, so that the specific gravity of the charge shell is reduced, the specific gravity of ammunition is increased, and the deterrence force of the weapon is improved; the appearance of the projectile body is beneficial to reducing air resistance and accurately guiding. A nickel-based high-temperature alloy C250 (namely Co250, cobalt-containing maraging steel) maraging steel 00Ni18Co8Mo5TiAl is adopted for a certain air-to-air missile engine shell, and the C250 maraging steel is different from general structural steel and belongs to a special type of steel. It relies on the high alloy content of nickel as the main to form the flexible iron-nickel martensite, and precipitate intermetallic compound and lead to the reinforcement of the steel in aging process, its characteristic is to have excellent fracture toughness concurrently at the high strength grade, this steel has body-centered cubic lattice, there are 6 stagnation planes and two slip directions, its slip system is more than the four-sided martensite slip system that the carbon strengthens, it is a new ultra-high strength steel of high specific strength, high specific stiffness, its elongation is low, the yield strength is high, the tensile strength can reach 1800MPa, higher than D406A (30Si2MnCrMoVE) tensile strength (1620MPa) of the ultra-high strength steel. The yield ratio of the C250 maraging steel is higher than that of the D406A ultrahigh-strength steel, the deformation resistance of the material is greatly increased compared with that of the common carbon steel, and the steel is a steel type with high strength and high toughness in the existing material.
The thin-wall ellipsoid, which is an important element for the combustion chamber shell of an engine of a certain model, is machined by a nickel-based superalloy C250 steel forging machine with allowance removed, the material utilization rate of the ellipsoid machined by the method is only 9 percent, the single-piece production cycle is as long as 14 days, and the small-scale production progress of the model cannot be met.
Disclosure of Invention
The invention aims to overcome the defects of the background technology and provides a cold forming method of a nickel-based superalloy C250 steel thin-wall ellipsoid, which has the advantages of simple process flow, stable and controllable product quality, improved material utilization rate and shortened single-piece production period.
In order to achieve the purpose, the cold forming method of the thin-wall ellipsoid of the nickel-based superalloy C250 steel, which is designed by the invention, comprises the following steps:
1) finely turning a cylindrical forged ring according to the spinning process requirement, and then carrying out solution treatment on the forged ring;
2) installing and adjusting a core mould and a spinning wheel, installing a spinning blank on the core mould after the test run detection is qualified, fixing the spinning blank on the tail end of the core mould, starting a tail top to move axially, and pushing the spinning blank to clamp the forged ring in place;
3) starting a three-spinning wheel, and spinning the forged ring on a numerical control spinning machine for three times to form a spinning cylinder section;
4) after spinning is finished, demolding the spinning cylinder section, and carrying out solid solution treatment to eliminate spinning processing stress;
5) cutting and sectioning the spinning cylinder section into an arc plate, leveling on a three-axis roller, and shearing a circle to prepare a drawn steel plate blank;
6) mounting a drawing die on a double-acting hydraulic press for trial operation, detecting whether the die gap is uniform and qualified, and uniformly coating drawing oil on the female die and the blank holder pressing surface of the drawing die; placing a drawing steel plate blank on a female die of a drawing die, and centering the drawing steel plate blank with a male die, the female die and an equipment center of the drawing die;
7) drawing for the first time: starting hydraulic equipment, pressing a blank pressing slide block downwards, and operating a male die to perform primary deep drawing to form a deep-drawn part semi-finished product;
8) carrying out solution treatment on the semi-finished product of the drawing piece to eliminate work hardening stress;
9) and (3) second drawing: and (3) placing the semi-finished product of the drawing part subjected to the solution treatment on a female die of a drawing die, starting hydraulic equipment, pressing a blank holder slide block downwards, operating a male die to perform secondary drawing, wherein the drawing depth reaches the designed total height, and thus the ellipsoidal drawing part is formed.
Further, in the step 1), the solid solution treatment specific process comprises: annealing the forged ring at 585-615 deg.c for 40-60 min, and air cooling; spheroidizing annealing at 735-765 deg.C for 60-90 min, and furnace cooling.
Further, in the step 1), the grain size of the forged ring is more than or equal to 5 grade, the unilateral wall thickness is more than or equal to 7.5mm, and the surface roughness reaches more than 1.6 μm after finish turning.
Further, in the step 3), the rotating speed of the spinning spindle is 50-60 rpm, the feeding ratio is 0.8-1.2 mm/r, and the pass reduction rate is 29-32%.
Further, in the step 4), the specific process of the solution treatment is as follows: keeping the temperature for 30-40 min at 805-835 ℃, and cooling in air.
Further, in the step 7), the first drawing is performed at a drawing speed of 10mm/s to 12mm/s, the blank holder force is 2.8MPa, and the drawing depth is 0.6 times the total height.
Further, in the step 8), the solution treatment specific process is as follows: keeping the temperature for 30-40 min at 805-835 ℃, and cooling in air.
Still further, in the step 9), the second drawing is performed at a drawing speed of 10mm/s to 12mm/s with a blank holder pressure of 3 MPa.
Furthermore, the ellipsoid deep drawing part adopts a nickel-based high-temperature alloy C250 steel plate material; the minimum diameter of the ellipsoid deep drawing part is phi 296 mm-1200 mm, the minimum wall degree delta is 2.0-4.1 mm, and the ellipsoid ratio m is 1.68-2.
Compared with the prior art, the invention has the following advantages:
firstly, the method has simple process flow, stable and controllable product quality, more than 60 percent of material utilization rate and 1 day of single-piece production period, thereby reducing the production cost, shortening the production period and meeting the small-batch production progress.
Secondly, compared with the existing machining mode of mechanically removing the allowance, the method has the advantages of high material utilization rate, high size precision of the ellipsoid, good stability and short production period.
Thirdly, the deep drawing processing method only needs to put in a set of deep drawing die, the adopted deep drawing die consists of a male die, a female die and a rigid blank holder, and the obtained ellipsoidal deep drawing part is well formed, high in dimensional accuracy and good in stability and can be used for a solid rocket engine shell.
Drawings
FIG. 1 is a schematic structural view of a swage ring;
FIG. 2 is a schematic structural view of a spin cylinder section;
FIG. 3 is a schematic structural view of a drawn steel sheet blank;
figure 4 is a schematic structural view of a drawing member blank;
figure 5 is a schematic diagram of the structure of an ellipsoidal deep drawing member;
in the figure: the device comprises a forged ring 1, a spinning cylinder section 2, a deep-drawing steel plate blank 3, a deep-drawing piece semi-finished product 4 and an ellipsoid deep-drawing piece 5.
Detailed Description
The following describes the embodiments of the present invention in detail with reference to the embodiments, but they are not intended to limit the present invention and are only examples. While the advantages of the invention will be apparent and readily appreciated by the description.
Example 1
The cold forming method of the nickel-based superalloy C250 steel thin-wall ellipsoid body comprises the following steps:
1) finely turning a cylindrical forged ring 1 according to the spinning process requirement, carrying out solution treatment on the forged ring, and carrying out air cooling on the forged ring 1 at the annealing temperature of 600 +/-15 ℃ for 60 min; spheroidizing annealing at 750 +/-15 ℃, keeping the temperature for 90min, cooling along with a furnace, wherein the grain size of the forged ring 1 is more than or equal to 5 grade, the unilateral wall thickness is more than or equal to 7.5mm, and the surface roughness reaches more than 1.6 mu m after finish turning;
2) installing a core die and installing and adjusting a spinning wheel, detecting the qualified test run, installing the spinning blank on the spinning core die, fixing the spinning blank on the tail end of the core die, starting a tail top, axially moving, pushing the blank to clamp the forged ring 1 in place;
3) starting a three-spinning wheel, and spinning the forging ring 1 on a numerical control spinning machine for three times at the spindle rotating speed of 60rpm, the feeding ratio of 1.2mm/r and the pass reduction rate of 32% to form a spinning cylinder section 2;
4) after spinning is finished, demolding the spinning barrel section 2, carrying out solution treatment, keeping the temperature for 40min at 820 +/-15 ℃, and carrying out air cooling to eliminate spinning processing stress;
5) cutting and sectioning the spinning cylinder section 2 into an arc plate, leveling on a three-axis roller, and shearing a circle to prepare a drawn steel plate blank 3;
6) mounting and adjusting a drawing die, mounting the drawing die on a double-acting hydraulic press for trial operation, detecting whether the die gap is uniform and qualified, and uniformly coating drawing oil on the pressing surfaces of a female die and a blank holder of the drawing die; placing the drawing steel plate blank 3 on a female die of a drawing die, and centering the drawing steel plate blank 3 with a male die, the female die and an equipment center of the drawing die;
7) drawing for the first time: starting hydraulic equipment, pressing a blank pressing slide block downwards, operating a male die, and performing primary drawing at a drawing speed of 12mm/s, wherein the blank pressing force is 2.8MPa, and the drawing depth is 0.6 times of the total height to form a drawing part semi-finished product 4;
8) carrying out solution treatment on the semi-finished product 4 of the drawing piece, keeping the temperature for 40min at 820 +/-15 ℃, and carrying out air cooling to eliminate the work hardening stress;
9) and (3) second drawing: placing the semi-finished product 4 of the drawing part after the solution treatment on a female die of a drawing die, starting hydraulic equipment, pressing a blank holder slide block downwards, operating a male die, carrying out secondary drawing at the drawing speed of 12mm/s, wherein the blank holder force is 3MPa, the drawing depth reaches the designed total height, forming an ellipsoid drawing part 5, and the detection result of the formed drawing part is shown in table 1.
TABLE 1 test results of ellipsoidal drawn parts
Example 2
The cold forming method of the nickel-based superalloy C250 steel thin-wall ellipsoid body comprises the following steps:
1) finely turning a cylindrical forged ring 1 according to the requirements of a spinning process, carrying out solution treatment on the forged ring, carrying out heat preservation for 40min at the annealing temperature of 600 +/-15 ℃ on the forged ring 1, and air-cooling; spheroidizing annealing at 750 +/-15 ℃, keeping the temperature for 60min, cooling along with a furnace, wherein the grain size of the forged ring 1 is more than or equal to 5 grade, the unilateral wall thickness is more than or equal to 7.5mm, and the surface roughness reaches more than 1.6 mu m after finish turning;
2) installing a core die and installing and adjusting a spinning wheel, detecting the qualified test run, installing a spinning blank on the spinning core die, fixing the spinning blank on the tail end of the core die, starting a tail top, axially moving, pushing the blank to clamp the forged ring 1 in place;
3) starting a three-spinning wheel, and spinning the forging ring 1 on a numerical control spinning machine for three times at the spindle rotating speed of 50rpm, the feeding ratio of 0.8mm/r and the pass reduction rate of 29 percent to form a spinning cylinder section 2;
4) after spinning is finished, demolding the spinning barrel section 2, carrying out solution treatment, keeping the temperature for 30min at 820 +/-15 ℃, and carrying out air cooling to eliminate spinning processing stress;
5) cutting and sectioning the spinning cylinder section 2 into an arc plate, leveling on a three-axis roller, and shearing a circle to prepare a drawn steel plate blank 3;
6) mounting and adjusting a drawing die, mounting the drawing die on a double-acting hydraulic press for trial operation, detecting whether the die gap is uniform and qualified, and uniformly coating drawing oil on the pressing surfaces of a female die and a blank holder of the drawing die; placing the drawing steel plate blank 3 on a female die of a drawing die, and centering the drawing steel plate blank 3 with a male die, the female die and an equipment center of the drawing die;
7) drawing for the first time: starting hydraulic equipment, pressing a blank pressing slide block downwards, operating a male die, and performing primary drawing at a drawing speed of 10mm/s, wherein the blank pressing force is 2.8MPa, and the drawing depth is 0.6 times of the total height to form a drawing part semi-finished product 4;
8) carrying out solution treatment on the semi-finished product 4 of the drawing piece, keeping the temperature for 30min at 820 +/-15 ℃, and carrying out air cooling to eliminate the work hardening stress;
9) and (3) second drawing: placing the semi-finished product 4 of the drawing part after the solution treatment on a female die of a drawing die, starting hydraulic equipment, pressing a blank holder slide block downwards, operating a male die, carrying out secondary drawing at the drawing speed of 10mm/s, wherein the blank holder force is 3MPa, the drawing depth reaches the designed total height, forming an ellipsoid drawing part 5, and the detection result of the formed drawing part is shown in a table 2.
TABLE 2 test results of ellipsoidal drawn parts
The data of the detection results in tables 1 and 2 show that the ellipsoid drawn parts obtained by the method of the invention in the embodiments 1-2 are well formed, high in dimensional accuracy and good in stability.
The above description is only an embodiment of the present invention, and it should be noted that any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the protection scope of the present invention, and the rest that is not described in detail is the prior art.
Claims (8)
1. A cold-state forming method of a nickel-based superalloy C250 steel thin-wall ellipsoid is characterized by comprising the following steps: the method comprises the following steps:
1) finely turning a cylindrical forged ring (1) according to the spinning process requirement, and then carrying out solution treatment on the forged ring (1);
2) installing and adjusting a core die and a spinning wheel, installing a spinning blank on the core die after the test run detection is qualified, fixing the spinning blank on the tail end of the core die, starting a tail top to move axially, and pushing the spinning blank to clamp the forged ring (1) in place;
3) starting a three-spinning wheel, and spinning the forging ring (1) on a numerical control spinning machine for three times to form a spinning cylinder section (2);
4) after spinning is finished, demolding the spinning cylinder section (2), and carrying out solid solution treatment to eliminate spinning processing stress;
5) cutting and sectioning the spinning cylinder section (2) into an arc plate, leveling on a three-axis roller, and shearing a circle to prepare a drawn steel plate blank (3);
6) mounting a drawing die on a double-acting hydraulic press for trial operation, detecting whether the die gap is uniform and qualified, and uniformly coating drawing oil on the female die and the blank holder pressing surface of the drawing die; placing a drawing steel plate blank (3) on a female die of a drawing die, and centering the drawing steel plate blank (3) with the male die, the female die and the center of equipment of the drawing die;
7) drawing for the first time: starting hydraulic equipment, pressing a blank pressing slide block downwards, and operating a male die to perform primary deep drawing to form a deep-drawn part semi-finished product (4);
8) carrying out solution treatment on the semi-finished product (4) of the drawing part to eliminate work hardening stress;
9) and (3) second drawing: and (3) placing the semi-finished product (4) of the drawing part after the solution treatment on a female die of a drawing die, starting hydraulic equipment, pressing a blank holder slide block downwards, operating the male die to perform secondary drawing, and forming the ellipsoidal drawing part (5) when the drawing depth reaches the designed total height.
2. The cold forming method of the nickel-based superalloy C250 steel thin-walled ellipsoid of claim 1, wherein: in the step 1), the solid solution treatment specific process comprises the following steps: annealing temperature of the forged ring (1) is 585-615 ℃, heat preservation time is 40-60 min, and air cooling is carried out; spheroidizing annealing at 735-765 deg.C for 60-90 min, and furnace cooling.
3. The cold forming method of the nickel-based superalloy C250 steel thin-walled ellipsoid of claim 1, wherein: in the step 1), the grain size of the forged ring (1) is more than or equal to 5 grade, the unilateral wall thickness is more than or equal to 7.5mm, and the surface roughness reaches more than 1.6 mu m after finish turning.
4. The cold forming method of the nickel-based superalloy C250 steel thin-walled ellipsoid of claim 1, wherein: in the step 3), the rotating speed of the spinning main shaft is 50-60 rpm, the feeding ratio is 0.8-1.2 mm/r, and the pass reduction rate is 29-32%.
5. The cold forming method of the nickel-based superalloy C250 steel thin-walled ellipsoid of claim 1, wherein: the step 4) comprises the following specific processes of solid solution treatment: keeping the temperature for 30-40 min at 805-835 ℃, and cooling in air.
6. The cold forming method of the nickel-based superalloy C250 steel thin-walled ellipsoid of claim 1, wherein: in the step 7), the first drawing is performed at a drawing speed of 10mm/s to 12mm/s, the blank holder force is 2.8MPa, and the drawing depth is 0.6 times of the total height.
7. The cold forming method of the nickel-based superalloy C250 steel thin-walled ellipsoid of claim 1, wherein: in the step 8), the solid solution treatment specific process comprises the following steps: keeping the temperature for 30-40 min at 805-835 ℃, and cooling in air.
8. The cold forming method of the nickel-based superalloy C250 steel thin-walled ellipsoid of claim 1, wherein: in the step 9), secondary drawing is carried out at a drawing speed of 10-12 mm/s, and the blank holder force is 3 MPa.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114226535A (en) * | 2021-10-09 | 2022-03-25 | 湖北三江航天江北机械工程有限公司 | Spinning method of thin-wall aluminum-magnesium alloy cylinder |
| CN114309220A (en) * | 2021-12-06 | 2022-04-12 | 中国航发哈尔滨东安发动机有限公司 | Heat treatment process method for solving GH4169 large-drawing cold stamping forming part |
| CN117483533A (en) * | 2024-01-03 | 2024-02-02 | 天津天锻航空科技有限公司 | Forming method of airplane oil transportation half pipe parts |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105127268A (en) * | 2015-10-19 | 2015-12-09 | 哈尔滨工业大学 | Design method for hydro-mechanical deep drawing hydraulic loading range of semi-elliptical part |
| CN107175295A (en) * | 2017-07-07 | 2017-09-19 | 天津航天长征火箭制造有限公司 | A kind of 3350mm grades of ellipsoid melon valve liquid-filling shaping technique and its mould |
| CN109604407A (en) * | 2018-12-10 | 2019-04-12 | 湖北三江航天江北机械工程有限公司 | The accurate spinning processing method of minor diameter multi-step change wall thickness cylinder |
| CN110076259A (en) * | 2019-05-29 | 2019-08-02 | 湖北三江航天江北机械工程有限公司 | The processing method of airborne pencil rocket burning chamber shell |
| CN111015095A (en) * | 2019-11-28 | 2020-04-17 | 湖北三江航天江北机械工程有限公司 | Method for forming C250 steel ellipsoid |
| CN111515620A (en) * | 2020-04-10 | 2020-08-11 | 湖北三江航天江北机械工程有限公司 | Forming method of solid rocket engine shell |
-
2020
- 2020-10-30 CN CN202011190605.3A patent/CN112439825A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105127268A (en) * | 2015-10-19 | 2015-12-09 | 哈尔滨工业大学 | Design method for hydro-mechanical deep drawing hydraulic loading range of semi-elliptical part |
| CN107175295A (en) * | 2017-07-07 | 2017-09-19 | 天津航天长征火箭制造有限公司 | A kind of 3350mm grades of ellipsoid melon valve liquid-filling shaping technique and its mould |
| CN109604407A (en) * | 2018-12-10 | 2019-04-12 | 湖北三江航天江北机械工程有限公司 | The accurate spinning processing method of minor diameter multi-step change wall thickness cylinder |
| CN110076259A (en) * | 2019-05-29 | 2019-08-02 | 湖北三江航天江北机械工程有限公司 | The processing method of airborne pencil rocket burning chamber shell |
| CN111015095A (en) * | 2019-11-28 | 2020-04-17 | 湖北三江航天江北机械工程有限公司 | Method for forming C250 steel ellipsoid |
| CN111515620A (en) * | 2020-04-10 | 2020-08-11 | 湖北三江航天江北机械工程有限公司 | Forming method of solid rocket engine shell |
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|---|---|---|---|---|
| CN114226535A (en) * | 2021-10-09 | 2022-03-25 | 湖北三江航天江北机械工程有限公司 | Spinning method of thin-wall aluminum-magnesium alloy cylinder |
| CN114226535B (en) * | 2021-10-09 | 2024-05-07 | 湖北三江航天江北机械工程有限公司 | Spinning method for thin-wall aluminum-magnesium alloy cylinder |
| CN114309220A (en) * | 2021-12-06 | 2022-04-12 | 中国航发哈尔滨东安发动机有限公司 | Heat treatment process method for solving GH4169 large-drawing cold stamping forming part |
| CN114309220B (en) * | 2021-12-06 | 2023-10-24 | 中国航发哈尔滨东安发动机有限公司 | Heat treatment process method for solving problem of GH4169 large-drawing cold-stamping forming part |
| CN117483533A (en) * | 2024-01-03 | 2024-02-02 | 天津天锻航空科技有限公司 | Forming method of airplane oil transportation half pipe parts |
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