CN116037845A - Positive extrusion forging forming manufacturing method for SUPER CMV alloy SUPER long shaft - Google Patents
Positive extrusion forging forming manufacturing method for SUPER CMV alloy SUPER long shaft Download PDFInfo
- Publication number
- CN116037845A CN116037845A CN202310154874.1A CN202310154874A CN116037845A CN 116037845 A CN116037845 A CN 116037845A CN 202310154874 A CN202310154874 A CN 202310154874A CN 116037845 A CN116037845 A CN 116037845A
- Authority
- CN
- China
- Prior art keywords
- hole
- punch
- extrusion
- die
- forging
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000005242 forging Methods 0.000 title claims abstract description 69
- 238000001125 extrusion Methods 0.000 title claims abstract description 53
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 23
- 239000000956 alloy Substances 0.000 title claims abstract description 23
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 13
- 238000000034 method Methods 0.000 claims abstract description 30
- 238000005496 tempering Methods 0.000 claims abstract description 21
- 230000008569 process Effects 0.000 claims abstract description 19
- 238000000137 annealing Methods 0.000 claims abstract description 16
- 238000010791 quenching Methods 0.000 claims abstract description 16
- 230000000171 quenching effect Effects 0.000 claims abstract description 16
- 238000003754 machining Methods 0.000 claims abstract description 8
- 238000007689 inspection Methods 0.000 claims abstract description 6
- 239000006247 magnetic powder Substances 0.000 claims abstract description 6
- 238000013461 design Methods 0.000 claims abstract description 5
- 238000010438 heat treatment Methods 0.000 claims description 26
- 238000003825 pressing Methods 0.000 claims description 22
- 238000003780 insertion Methods 0.000 claims description 4
- 230000037431 insertion Effects 0.000 claims description 4
- 230000001133 acceleration Effects 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims 1
- 238000009826 distribution Methods 0.000 abstract description 11
- 238000004321 preservation Methods 0.000 description 9
- 229910000831 Steel Inorganic materials 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000003631 expected effect Effects 0.000 description 2
- 229910000734 martensite Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 229910000601 superalloy Inorganic materials 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K1/00—Making machine elements
- B21K1/06—Making machine elements axles or shafts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J13/00—Details of machines for forging, pressing, or hammering
- B21J13/02—Dies or mountings therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J13/00—Details of machines for forging, pressing, or hammering
- B21J13/02—Dies or mountings therefor
- B21J13/03—Die mountings
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
- B21J5/08—Upsetting
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
The invention provides a SUPER CMV alloy SUPER long shaft forward extrusion forging forming manufacturing method, which mainly comprises the steps of upsetting, extrusion, annealing, rough machining, quenching and tempering, finish machining and magnetic powder inspection; in the extrusion process, the flange part is treated by adopting a high-temperature alloy small punch head, so that the flange part is uniformly deformed, and the streamline distribution of the long shaft is reasonable. In addition, through the mould design for the major axis easily drawing of patterns improves the yield.
Description
Technical Field
The invention relates to the technical field of alloy steel forging forming, in particular to a method for manufacturing a SUPER CMV alloy SUPER long shaft by forward extrusion forging forming.
Background
SUPERCV steel has the advantages of high strength, good comprehensive performance, excellent fatigue performance, good corrosion resistance and the like, and is specially used for aviation engine shaft parts. The shaft parts are used as key parts of the aeroengine, and extremely high requirements are set for forgings:
(1) The forging has stable high tensile strength, high yield strength and high fatigue resistance in the long-term use process;
(2) The forging piece has excellent oxidation resistance and corrosion resistance;
(3) The grain size structure should be uniform, and the streamline is distributed along the shape of the forging;
(4) The material cost, rejection rate of forgings and cost should be controlled as much as possible.
A small number of domestic forging enterprises conduct forging process research on shaft parts, small-batch production is achieved to a certain extent, and the forging process is quite different from foreign level.
Currently, the production process of the SUPER CMV steel mainly comprises upsetting, forging (extrusion), annealing, rough machining, quenching and tempering and magnetic powder inspection, and the following problems mainly exist in the production process:
(1) Because the shaft forging piece has a long rod part, the diameter of a flange part (head part) is larger, the whole deformation is uneven, so that a larger deformation dead zone exists on the head part, and streamline distribution is uneven;
(2) Because the streamline distribution of the shaft is uneven, the conventional die cannot be used for smooth die stripping during die stripping, and when the residence time is too long, the forging is easy to be blocked in the die and cannot be taken out due to thermal expansion and cold contraction, so that the rejection rate of the forging is increased.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a method for manufacturing a SUPER CMV alloy SUPER long shaft by forward extrusion forging, which mainly comprises the steps of upsetting, extrusion, annealing, rough machining, quenching and tempering, finish machining and magnetic powder inspection; in the extrusion process, the flange part is treated by adopting a high-temperature alloy small punch head, so that the flange part is uniformly deformed, and the streamline distribution of the long shaft is reasonable. In addition, through the mould design for the major axis easily drawing of patterns improves the yield.
The technical scheme of the invention is as follows:
a manufacturing method for SUPER CMV alloy SUPER long shaft positive extrusion forging mainly comprises the following steps: upsetting, final forging heating, extrusion, annealing, rough machining, quenching, tempering, finishing and magnetic powder inspection;
in the final forging heating extrusion process, adding a high-temperature alloy small punch and using an extrusion die; the design of a high-temperature alloy small punch is adopted, and a connecting rod is used for fixing, so that the flange part (head) is uniformly deformed and the streamline distribution is reasonable; the extrusion die adopts a split insert to replace an integral insert, and adopts a double fixing mode of an external bolt and a fixing pin, thereby facilitating demoulding.
Preferably, in the above method, the extrusion die includes an upper die and a lower die;
the bottom end of the upper die is provided with an insert A, and the insert A is arranged along the circumferential direction of the bottom end of the upper die;
the top end of the lower die is provided with an insert B, and the insert B is arranged along the circumferential direction of the top end of the lower die;
the insertion block A is provided with a through hole A, the insertion block B is provided with a blind hole A, and fixing pins are arranged in the through hole A and the blind hole A;
when the upper die is connected with the lower die, the insert block B is inserted into the insert block A, and the fixing pin is inserted into the through hole A and the blind hole A, so that the primary fixing of the upper die and the lower die is realized;
the outer side surface of the upper die is provided with a fastening block A, the outer side surface of the lower die is provided with a fastening block B, the fastening block A is provided with a through hole B, the fastening block B is provided with a through hole C, and bolts are arranged in the through hole B and the through hole C;
after the fixing pin is used for preliminarily fixing the upper die and the lower die, the bolts are used for passing through the through holes B and the through holes C, and then the fastening nuts are used for fixing the bolts, so that the fastening of the upper die and the lower die is realized, the displacement of the upper die and the lower die in the extrusion process is avoided, and the streamline form of a finished forging is ensured.
The upper die and the lower die are connected in a disassembling way, and the upper die and the lower die form a split insert, so that the existing integral insert is replaced, and the problem of difficult demoulding is effectively avoided;
a punch pressing plate is arranged above the upper die, a large punch is fixed on the bottom surface of the punch pressing plate, and the outer diameter of the large punch is matched with the inner diameter of the upper die; a small punch is fixed at the bottom end of the large punch;
when the forging die is used, the blank is placed in the upper die, the large punch is stretched into the upper die, and the blank in the upper die is forged under the drive of the punch pressing plate.
Preferably, a blind hole B is arranged at the bottom of the large punch, and the top part of the small punch is positioned in the blind hole B; the small punch in the blind hole B is provided with a through hole D with the axis perpendicular to the axis of the blind hole, the large punch is provided with a through hole E coaxial with the through hole D, and a connecting rod penetrates through the through hole D and the through hole E to fixedly connect the large punch and the small punch.
Preferably, the upsetting heating parameter is 800 ℃ multiplied by 120min+1130 ℃ multiplied by 130min; when upsetting, placing the blank in an upsetting die, and pressing the blank to an upper anvil and the upsetting die to be matched; upsetting treatment can reduce the height of blanks, and a positioning shape is generated under the action of an upsetting die so as to prepare for subsequent die forging.
Preferably, the final forging heating parameter is 800 ℃ multiplied by 140min and 1130 ℃ multiplied by 200min; when in final forging and heating extrusion, the head of the upsetted blank is upward in an extrusion die, the pressing speed is 15mm/s, and the pressing acceleration is 2-4mm/s 2 The upper die and the lower die are clamped and provided with zero points, the upper die is pressed to 400mm from being contacted with a blank (about 550mm high), a punch head and a lower die cavity are lubricated by a lifting hammer, the pressing is continued to 150mm, the punch head and the lower die cavity are lubricated by the lifting hammer, and the pressing is finally performed to under-pressure 3mm; the extrusion die is used for forward extrusion molding of the forging, and the forging deformation process is also the streamline forming processThe forging streamline is very important for forgings with higher requirements, and the reasonable distribution of the streamline can effectively improve the strength and fatigue resistance of the forgings.
Preferably, the annealing parameters are 720 ℃ + -10 ℃ X (344-359) min; by reasonably setting annealing process parameters, grains can be effectively refined, the structure and performance of the forging are improved, and the workpiece is softened so as to be cut; when the heating temperature is too high or the heat preservation time is too long, the hardness after annealing is too low; when the heating temperature is too low or the holding time is too short, the annealing effect is not obvious, and the expected effect is difficult to achieve.
Preferably, the quenching parameters are 800+/-10 ℃ X (81-99) min+940+/-10 ℃ X (108-132) min, and the oil cooling is carried out; tempering parameters are 570+/-6 ℃ X (240-255) min; in the quenching stage, the forging can be austenitized above the advanced temperature and subjected to martensitic transformation by oil cooling through setting the technological parameters, and the rigidity, the hardness, the wear resistance, the fatigue strength and the toughness of the forging are greatly improved by matching with the subsequent tempering. When the heating temperature is too high or the heat preservation time is too long, the grain size of the workpiece becomes thicker and larger, so that the toughness is reduced, and the performances such as impact, fatigue, fracture toughness and the like are affected; when the heating temperature is too low or the holding time is too short, the tensile strength is too low. Tempering is performed in time after quenching, so that the brittleness of a workpiece can be reduced, the internal stress is eliminated or reduced, and the steel piece has great internal stress and brittleness after quenching, if tempering is vigorous in time, the forging piece is deformed and even cracked. When the tempering temperature is too high or the heat preservation time is too long, the hardness of the workpiece is obviously reduced, and the strength requirement cannot be met; when the tempering temperature is too low or the heat preservation time is too short, the internal stress cannot be well reduced, and meanwhile, the hardness is too high and the toughness is insufficient.
Because the diameter of the flange part (head part) of the long shaft is larger, the deformation has dead zone, the small punch is added to increase the deformation of the area, and because the small punch part is a closed space during extrusion, and meanwhile, the effective thickness of the small punch is smaller, heat cannot be transmitted, so that the temperature of the small punch is quickly increased, and common materials cannot bear the temperature, therefore, the small punch is made of high-temperature alloy; the die is ejected due to expansion caused by heat and contraction caused by cold, and meanwhile, the gap between the long shaft and the inner wall of the die is small, so that the die is easy to clamp, and after the split type inserts are adopted, the two inserts can be easily taken down when forging is completed, so that the die is convenient to eject a forging piece; in the extrusion process and the demolding process, the extrusion cylinder part bears upward force, and the extrusion cylinder is prevented from falling off after the external bolts and the positioning keys are used for double fixation.
Compared with the prior art, the invention has the beneficial effects that:
1. through setting up little drift to match little drift and extrusion die, make the pole portion of major axis and flange portion overall deformation even, thereby make the major axis that obtains have the advantage that streamline distributes evenly.
2. Through setting up extrusion die for after obtaining the even major axis of streamline, the major axis can be demolded smoothly, improves the success rate of product.
3. The long shaft obtained by the method provided by the invention has the advantages of uniform long shaft streamline distribution and uniform organization.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the description of the embodiments or the prior art will be briefly described below, and it will be obvious to those skilled in the art that other drawings can be obtained from these drawings without inventive effort.
Figure 1 is a pre-upset billet shape.
Fig. 2 is an upsetting die.
FIG. 3 is a plot of billet heating during upsetting.
FIG. 4 is a schematic diagram of forging upsetting.
Fig. 5 is a heating curve of a forging piece in the final forging heating process.
Fig. 6 is a schematic structural view of an extrusion die.
Fig. 7 is a cross-sectional view of an extrusion die.
FIG. 8 is an annealing curve.
Fig. 9 is a quenching curve.
Fig. 10 is a tempering curve.
FIG. 11 is a streamline distribution diagram of the product of example 1.
FIG. 12 is a streamline profile of comparative example 1.
In the figure, 1-upper die, 2-lower die, 3-insert A, 4-insert B, 5-fixed pin, 6-fastening block A, 7-fastening block B, 8-bolt, 9-punch press, 10-large punch, 11-small punch and 12-connecting rod.
Detailed Description
In order to better understand the technical solutions of the present invention, the following description will clearly and completely describe the technical solutions of the embodiments of the present invention in conjunction with the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
Example 1
Referring to fig. 1 to 12, the embodiment provides a method for manufacturing SUPER CMV alloy SUPER long shaft by forward extrusion forging, which mainly comprises the following steps: upsetting, final forging heating, extruding, annealing, rough machining, quenching and tempering, finishing and magnetic powder inspection;
in the final forging heating extrusion process, adding a high-temperature alloy small punch and using an extrusion die; the design of a high-temperature alloy small punch is adopted, and a connecting rod is used for fixing, so that the flange part (head) is uniformly deformed and the streamline distribution is reasonable; the extrusion die adopts a split insert to replace an integral insert, and adopts a double fixing mode of bolts and fixing pins, thereby facilitating demoulding;
the extrusion die comprises an upper die 1 and a lower die 2;
the bottom end of the upper die 1 is provided with an inserting block A3, and the inserting block A3 is arranged along the circumferential direction of the bottom end of the upper die 1;
the top end of the lower die 2 is provided with an insert block B4, and the insert block B4 is arranged along the circumferential direction of the top end of the lower die 2;
the insert block A3 is provided with a through hole A, the insert block B4 is provided with a blind hole A, and fixing pins 5 are arranged in the through hole A and the blind hole A;
when the upper die 1 is connected with the lower die 2, the insert block B4 is inserted into the insert block A3, and the fixing pin 5 is inserted into the through hole A and the blind hole A, so that the primary fixing of the upper die 1 and the lower die 2 is realized;
the outer side surface of the upper die 1 is provided with a fastening block A6, the outer side surface of the lower die 2 is provided with a fastening block B7, the fastening block A6 is provided with a through hole B, the fastening block B7 is provided with a through hole C, and bolts 8 are arranged in the through hole B and the through hole C;
after the fixing pin 5 is used for preliminarily fixing the upper die 1 and the lower die 2, the bolts 8 are used for passing through the through holes B and the through holes C, and then the fastening nuts are used for fixing the bolts 8, so that the upper die 1 and the lower die 2 are fastened, the upper die 1 and the lower die 2 are prevented from being displaced in the extrusion process, and the streamline of a finished forging is ensured;
the upper die 1 and the lower die 2 are connected in a disassembling way, and the upper die 1 and the lower die 2 form a split insert, so that the existing integral insert is replaced, and the problem of difficult demoulding is effectively avoided;
a punch pressing plate 9 is arranged above the upper die 1, a large punch 10 is fixed on the bottom surface of the punch pressing plate 9, and the outer diameter of the large punch 10 is matched with the inner diameter of the upper die 1; a small punch 11 is fixed at the bottom end of the large punch 10;
specifically, in the present embodiment, a blind hole B is provided at the bottom of the large punch 10, and the top of the small punch 11 is located in the blind hole B; the small punch 11 positioned in the blind hole B is provided with a through hole D with the axis perpendicular to the axis of the blind hole, the large punch 10 is provided with a through hole E coaxial with the through hole D, and a connecting rod 12 penetrates through the through hole D and the through hole E to realize the fixed connection of the large punch 10 and the small punch 11;
when in use, a blank is placed in the upper die 1, a large punch 10 is extended into the upper die 1, and the blank in the upper die 1 is forged under the drive of a punch pressing plate 9;
wherein, the upsetting heating parameter is 800 ℃ multiplied by 120min and 1130 ℃ multiplied by 130min; when upsetting, placing the blank in an upsetting die, and pressing the blank to an upper anvil and the upsetting die to be matched; upsetting treatment, namely, the height of a blank can be reduced, and a positioning shape is generated under the action of an upsetting die so as to prepare for subsequent die forging;
the final forging heating parameters are 800 ℃ multiplied by 140min+1130 ℃ multiplied by 200min; when in final forging and heating extrusion, the head of the upsetted blank is upward in an extrusion die, the pressing speed is 15mm/s, and the pressing acceleration is 2-4mm/s 2 Up and downThe die is closed, a zero point is arranged, the upper die is pressed to 400mm from contacting with a blank (about 550mm high), a punch and a lower die cavity are lubricated by a lifting hammer, the pressing is continued to 150mm, the punch and the lower die cavity are lubricated by the lifting hammer, and the pressing is finally carried out to under-pressure 3mm; the extrusion die is used for forward extrusion molding of the forging, the forging deformation process is also a streamline forming process, the forging streamline is very important for the forging with higher requirements, and the reasonable distribution of the streamline can effectively improve the strength and fatigue resistance of the forging;
annealing parameters are 720 ℃ multiplied by 344min; by reasonably setting annealing process parameters, grains can be effectively refined, the structure and performance of the forging are improved, and the workpiece is softened so as to be cut; when the heating temperature is too high or the heat preservation time is too long, the hardness after annealing is too low; when the heating temperature is too low or the heat preservation time is too short, the annealing effect is not obvious, and the expected effect is difficult to achieve;
quenching parameters are 800 ℃ multiplied by 90min+940 ℃ multiplied by 120min, and oil cooling is carried out;
tempering parameters are 570 ℃ multiplied by 240min;
in the quenching stage, the forging can be austenitized above the advanced temperature and subjected to martensitic transformation by oil cooling through setting the technological parameters, and the rigidity, the hardness, the wear resistance, the fatigue strength and the toughness of the forging are greatly improved by matching with the subsequent tempering. When the heating temperature is too high or the heat preservation time is too long, the grain size of the workpiece becomes thicker and larger, so that the toughness is reduced, and the performances such as impact, fatigue, fracture toughness and the like are affected; when the heating temperature is too low or the holding time is too short, the tensile strength is too low. Tempering is performed in time after quenching, so that the brittleness of a workpiece can be reduced, the internal stress is eliminated or reduced, and the steel piece has great internal stress and brittleness after quenching, if tempering is vigorous in time, the forging piece is deformed and even cracked. When the tempering temperature is too high or the heat preservation time is too long, the hardness of the workpiece is obviously reduced, and the strength requirement cannot be met; when the tempering temperature is too low or the heat preservation time is too short, the internal stress cannot be well reduced, and meanwhile, the hardness is too high and the toughness is insufficient.
The forging obtained in the embodiment is shown in fig. 11, and the streamline distribution of the forging is reasonable, and the flange part is deformed uniformly;
the room temperature stretching results are shown in table 1, and meet the requirements:
table 1 results of stretching of example 1 samples at room temperature
| Sample numbering | Rm(MPa) | Rp0.2(MPa) | A％ | Z％ |
| RT-1 | 1540 | 1310 | 14.5 | 53.5 |
| RT-2 | 1550 | 1319 | 14.0 | 53.0 |
| Standard of | 1470-1670 | 1220-1370 | ≥10 | ≥45 |
Comparative example 1
The difference from example 1 is that the superalloy small punch is removed and a planar punch is used instead, with the result that the large head end face is hardly deformed and the streamline is unsatisfactory, see fig. 12.
Comparative example 2
The difference from example 1 is that the tempering process parameters were changed to 560 ℃ + -6 ℃ × (240-255) min, and the hardness was too low, see table 2, to be satisfactory.
Table 2 test results
| Sample numbering | Test results (HBW) |
| H1 | 424 |
| H2 | 429 |
| Standard of | 429-477 |
Although the present invention has been described in detail by way of reference to preferred embodiments, the present invention is not limited thereto. Various equivalent modifications and substitutions may be made in the embodiments of the present invention by those skilled in the art without departing from the spirit and scope of the present invention, and it is intended that all such modifications and substitutions be within the scope of the present invention/be within the scope of the present invention as defined by the appended claims. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (7)
1. A manufacturing method for SUPER CMV alloy SUPER long shaft positive extrusion forging is characterized in that the main process is as follows: upsetting, final forging heating, extrusion, annealing, rough machining, quenching, tempering, finishing and magnetic powder inspection;
in the final forging heating extrusion process, adding a high-temperature alloy small punch and using an extrusion die; adopting a high-temperature alloy small punch design, and fixing by using a connecting rod; the extrusion die adopts a split insert to replace an integral insert, and adopts a double fixing mode of an external bolt and a fixing pin.
2. The method of producing a SUPER CMV alloy SUPER long shaft forward extrusion forging as defined in claim 1, wherein the extrusion die comprises an upper die and a lower die;
the bottom end of the upper die is provided with an insert A, and the insert A is arranged along the circumferential direction of the bottom end of the upper die;
the top end of the lower die is provided with an insert B, and the insert B is arranged along the circumferential direction of the top end of the lower die;
the insertion block A is provided with a through hole A, the insertion block B is provided with a blind hole A, and fixing pins are arranged in the through hole A and the blind hole A;
the outer side surface of the upper die is provided with a fastening block A, the outer side surface of the lower die is provided with a fastening block B, the fastening block A is provided with a through hole B, the fastening block B is provided with a through hole C, and bolts are arranged in the through hole B and the through hole C;
a punch pressing plate is arranged above the upper die, a large punch is fixed on the bottom surface of the punch pressing plate, and the outer diameter of the large punch is matched with the inner diameter of the upper die; a small punch is fixed at the bottom end of the large punch.
3. The method for manufacturing the SUPERCV alloy super long shaft by forward extrusion forging according to claim 2, wherein a blind hole B is arranged at the bottom of the large punch, and the top of the small punch is positioned in the blind hole B; the small punch head positioned in the blind hole B is provided with a through hole D with the axis perpendicular to the axis of the blind hole, the large punch head is provided with a through hole E coaxial with the through hole D, and the connecting rod is used for penetrating through the through hole D and the through hole E.
4. The method of producing SUPER CMV alloy SUPER long shaft forward extrusion forging as defined in claim 1, wherein the upsetting heating parameter is 800 ℃ x 120min+1130 ℃ x 130min.
5. The method for manufacturing the SUPER CMV alloy SUPER long shaft forward extrusion forging as recited in claim 1, wherein the final forging heating parameter is 800 ℃ x 140min+1130 ℃ x 200min; when in final forging and heating extrusion, the head of the upsetted blank is upward in an extrusion die, the pressing speed is 15mm/s, and the pressing acceleration is 2-4mm/s 2 And the upper die and the lower die are matched with each other to set a zero point, the blank is pressed to 400mm from the upper die, the punch and the lower die cavity are lubricated by the lifting hammer, the pressing is continued to 150mm, the punch and the lower die cavity are lubricated by the lifting hammer, and the pressing is finally performed to under-pressure 3mm.
6. The method of producing SUPER CMV alloy SUPER long shaft forward extrusion forging as defined in claim 1, wherein the annealing parameter is 720 ℃ ± 10 ℃ × (344-359) min.
7. The method for manufacturing the SUPER CMV alloy SUPER long shaft by forward extrusion forging as set forth in claim 1, wherein the quenching parameters are 800 ℃ ± 10 ℃ × (81-99) min+940 ℃ ± 10 ℃ × (108-132) min, and oil-cooled; tempering parameters were 570 ℃ + -6 ℃ X (240-255) min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310154874.1A CN116037845A (en) | 2023-02-22 | 2023-02-22 | Positive extrusion forging forming manufacturing method for SUPER CMV alloy SUPER long shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310154874.1A CN116037845A (en) | 2023-02-22 | 2023-02-22 | Positive extrusion forging forming manufacturing method for SUPER CMV alloy SUPER long shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116037845A true CN116037845A (en) | 2023-05-02 |
Family
ID=86123827
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310154874.1A Pending CN116037845A (en) | 2023-02-22 | 2023-02-22 | Positive extrusion forging forming manufacturing method for SUPER CMV alloy SUPER long shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116037845A (en) |
-
2023
- 2023-02-22 CN CN202310154874.1A patent/CN116037845A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102284835B (en) | Method for producing 10.9-class vehicle bolt of above M12 | |
| US10022769B2 (en) | Method for producing a shaped part from an aluminum alloy sheet | |
| CN105689613A (en) | Special forging method suitable for super duplex stainless steel bars | |
| JP5062760B2 (en) | Bolt manufacturing method, bolt manufacturing apparatus, and bolt manufacturing mold | |
| CN109622648B (en) | Asymmetric continuous large-deformation extrusion forming method for magnesium alloy | |
| CN111250639B (en) | Blank forming method for GH4169 large-sized special-shaped ring forging | |
| CN110961872B (en) | Preparation method of large-size titanium alloy seamless deep-hole cylinder | |
| CN116037845A (en) | Positive extrusion forging forming manufacturing method for SUPER CMV alloy SUPER long shaft | |
| CN113084061A (en) | Nickel-based superalloy GH3536 die forging and forming method thereof | |
| CN114986086B (en) | Cold drawing isothermal thermoforming method for deep U-shaped stainless steel aircraft skin | |
| CN114433758B (en) | Forging processing method of high-silver aluminum alloy | |
| CN101598172A (en) | A kind of eccentric shaft and manufacture method thereof | |
| CN114473370A (en) | Preparation method of stainless steel thin-wall cylinder | |
| CN114799007B (en) | Finish forging forming process for basin-tooth forge piece | |
| CN114160730B (en) | Manufacturing method of large-size variable-cross-section GH4169 alloy power turbine rear shaft forging | |
| CN113798420B (en) | Forging method of non-magnetic retaining ring of 1Mn18Cr18N of turbogenerator | |
| RU2751209C1 (en) | Method for manufacture of segments for a graphite thrust bearing | |
| CN112846013B (en) | Method for manufacturing forging blank for oil exploitation equipment | |
| CN111893256B (en) | Manufacturing and strengthening method of high-performance core-setting connecting rod | |
| CN111644552B (en) | Forging method of multistage step roller with cone frustum | |
| CN117696825A (en) | Forming method of TA3 titanium alloy three-way pipe joint forging | |
| CN118744217A (en) | Forging method and forging die for large-size titanium alloy revolving body | |
| CN115945619A (en) | High-performance four-hammer radial forging and semi-solid die forging composite process for high-speed steel ring piece | |
| CN118268876A (en) | Hot working forming method of GH4099 asymmetric transmission shaft | |
| CN117535493A (en) | Heat treatment method of ORC turbine set pull rod material 30CrNiMo8 steel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20240703 Address after: 265700, located 210 meters south of the intersection of Hai'an Road and Yangguang Fourth Road in Xufu Street, Longkou City, Yantai City, Shandong Province Applicant after: Shandong Hongshan Aviation Forging Co.,Ltd. Country or region after: China Applicant after: Shandong Nanshan Aluminium Co.,Ltd. Address before: 265700 Room 305, administrative building, Shandong Nanshan Academy of science and Technology Co., Ltd., Donghai Industrial Park, Xufu street, Longkou City, Yantai City, Shandong Province Applicant before: Shandong Nanshan Aluminium Co.,Ltd. Country or region before: China |