CN112676505A - Forging forming method - Google Patents
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- CN112676505A CN112676505A CN202011315054.9A CN202011315054A CN112676505A CN 112676505 A CN112676505 A CN 112676505A CN 202011315054 A CN202011315054 A CN 202011315054A CN 112676505 A CN112676505 A CN 112676505A
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- 238000005242 forging Methods 0.000 title claims abstract description 108
- 238000000034 method Methods 0.000 title claims abstract description 44
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 30
- 238000003825 pressing Methods 0.000 claims abstract description 9
- 238000007781 pre-processing Methods 0.000 claims abstract description 4
- 238000010438 heat treatment Methods 0.000 claims description 21
- 238000000137 annealing Methods 0.000 claims description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 8
- 239000000314 lubricant Substances 0.000 claims description 7
- 239000011521 glass Substances 0.000 claims description 4
- 229910002804 graphite Inorganic materials 0.000 claims description 4
- 239000010439 graphite Substances 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 230000009466 transformation Effects 0.000 claims description 3
- 235000015895 biscuits Nutrition 0.000 claims 1
- 238000009966 trimming Methods 0.000 abstract description 10
- 230000008569 process Effects 0.000 abstract description 8
- 230000007547 defect Effects 0.000 abstract description 7
- 229910001069 Ti alloy Inorganic materials 0.000 abstract description 6
- 238000005520 cutting process Methods 0.000 abstract description 3
- 238000005728 strengthening Methods 0.000 description 9
- 230000035929 gnawing Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 238000007493 shaping process Methods 0.000 description 4
- 239000002184 metal Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005266 casting Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The invention relates to the technical field of die forging processing, in particular to a method for forming a forge piece, which comprises the following steps: s1, preprocessing the blank, the upper die and the lower die; s2, placing the blank into the die cavity of the lower die, forging and pressing the blank for multiple times through the convex part of the upper die until the upper die is contacted with the lower die, and forming the blank into a bowl-shaped forge piece with reinforcing ribs. The closed precision die forging is formed by matching the protruding part of the upper die with the die cavity of the lower die, the defects that the rib part of the bowl-shaped forge piece with the reinforcing rib is not full, the bowl-shaped forge piece is easy to bite and fold, and the titanium alloy forge piece is stuck on the upper die in the prior art are overcome, the trimming process is saved, and the obtained forge piece is complete in streamline and free of cutting.
Description
Technical Field
The invention relates to the technical field of die forging processing, in particular to a forging forming method.
Background
At present, the bowl-shaped part with the reinforcing rib is generally formed by casting, and the requirements on the organization performance and the quality of an aerospace project are high, so that die forging forming is considered. However, because titanium alloy belongs to rare metal materials which are difficult to process, the forming problem of the products is a technical problem faced by many manufacturers at present.
The rib part is easily not full and forging and pressing many times easily causes the rib part to gnaw, and folding defect easily appears in the bottom, and because the inner chamber strengthening rib is narrower, the titanium alloy has the great material characteristic of stickness, easily glues the mould, causes forging and mould whole to scrap.
The common open die forging has redundant burrs, so that the trimming process is needed, and a set of trimming die is additionally arranged. And the edge cutting of the thin-wall part can cause local deformation of the forging and influence the final size. The metal at the rough edges of the forgings is cut off, so that the forging flow lines at the parts are cut off, and part of performance loss can be caused.
Disclosure of Invention
The invention provides a forging forming method, which is used for solving the defects that the bowl-shaped forging with reinforcing ribs in the prior art is not full of ribs and is easy to cause gnawing and folding defects, and realizing that the protruding part of an upper die is matched with the die cavity of a lower die to form closed precision die forging.
The invention provides a forging forming method, which comprises the following steps:
s1, preprocessing the blank, the upper die and the lower die;
s2, placing the blank into the die cavity of the lower die, forging and pressing the blank for multiple times through the convex part of the upper die until the upper die is contacted with the lower die, and forming the blank into a bowl-shaped forge piece with reinforcing ribs.
According to the forging forming method provided by the invention, the step S1 comprises the following steps: preheating the upper die and the lower die at the preheating temperature of 200-250 ℃; and heating the cake blank to 20-50 ℃ below the phase transformation point, and keeping the temperature for 90-120 min to form the blank.
According to the forging forming method provided by the invention, in step S1, glass lubricant is uniformly coated on the cake blank before heating.
According to the forging forming method provided by the invention, in step S2, after the blank is placed in the die cavity of the lower die, the upper surface of the blank is covered with flaky solid graphite powder.
According to the forging forming method provided by the invention, in step S2, the surface of the convex part of the upper die is coated with water-based graphite lubricant.
According to the forging forming method provided by the invention, after the step S2, the method further comprises the following steps:
s3, ejecting the forge piece out of the lower die through an ejector rod;
s4, performing heat treatment on the forged piece.
According to the forging forming method provided by the invention, the step S4 comprises the following steps:
s41, primary annealing: heating the forging piece at 945-955 ℃, preserving heat for 1-1.5 hours, and cooling in air;
s42, secondary annealing: and heating the forging at 525-535 ℃, preserving heat for 6-6.5 hours, and cooling in air.
According to the forging forming method provided by the invention, before the step S1, the method further comprises the following steps:
s01, sawing a bar stock with a preset volume;
s02, heating and upsetting the bar stock to form a cake blank, wherein the upsetting deformation is more than 50%.
According to the forging forming method provided by the invention, in the step S01, the preset volume is the calculated volume after the height direction of the bowl-shaped forging with the reinforcing ribs is increased by 1.5-2.5 mm.
According to the forging forming method provided by the invention, in step S02, the cross section area of the cake blank is larger than the end surface area of the ejector rod, and the diameter of the cake blank is 2-5 mm smaller than that of the die cavity.
The invention provides a method for forming a forge piece, in particular to a method for forming a bowl-shaped forge piece with a reinforcing rib. Take strengthening rib bowl shape forging height dimension 70mm, the inner chamber has 6 strengthening ribs, and forming die divide into mould and bed die, contains 6 shaping grooves on the round platform form bellying of last mould for the shaping of strengthening rib, the bed die has the die cavity of round platform form, is used for fixed forging, prevents under the circumstances of forging and pressing many times, causes the forging misalignment, leads to the strengthening rib to gnaw or the bottom is folding. The bulge of the upper die is matched with the die cavity of the lower die to form closed precision die forging, the closed precision die forging is used for solving the problems that the rib part of the bowl-shaped forge piece with the reinforcing rib is not full, the defects of gnawing and folding are easily caused, the titanium alloy forge piece is stuck on the upper die, the trimming process is saved, and the obtained forge piece streamline is complete and has no cut-off.
In addition to the technical problems addressed by the present invention, the technical features constituting the technical solutions and the advantages brought by the technical features of the technical solutions described above, other technical features of the present invention and the advantages brought by the technical features of the present invention will be further described with reference to the accompanying drawings or will be understood by the practice of the present invention.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural view of a forging provided by the present invention;
FIG. 2 is a schematic structural view of a forging forming device provided by the present invention;
FIG. 3 is a schematic structural diagram of an upper die of the forging forming device provided by the invention;
FIG. 4 is a schematic structural diagram of a lower die of the forging forming device provided by the invention;
reference numerals:
1: an upper die; 11: a boss portion; 12: forming a groove;
2: a lower die; 21: a mold cavity; 22: a through hole; 23: the bottom is convex;
3: forging; 31: reinforcing ribs; 32: positioning blocks; 33: the bottom is sunken;
4: a top rod; 41: a rod body; 42: a platform; 43: and (4) sinking.
Detailed Description
The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the embodiments of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. Specific meanings of the above terms in the embodiments of the present invention can be understood in specific cases by those of ordinary skill in the art.
In embodiments of the invention, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of an embodiment of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
As shown in fig. 1, fig. 2, fig. 3, and fig. 4, an embodiment of the present invention further provides a method for forming a forging, including:
s1, preprocessing the blank, the upper die 1 and the lower die 2;
s2, the blank is put into the cavity 21 of the lower die 2, and the blank is forged a plurality of times by the convex portion 11 of the upper die 1 until the upper die 1 contacts the lower die 2, and the blank is formed into the bowl-shaped forged piece 3 with the reinforcing ribs 31.
The forging forming method of the embodiment of the invention is a method for forming a bowl-shaped forging with a reinforcing rib, and the blank after pretreatment is placed into a die cavity 21 of a lower die 2 after pretreatment, and then is forged through a convex part 11 of an upper die 1 after pretreatment until the die cavity 21 is matched with the convex part 11 to form the blank into the bowl-shaped forging 3 with the reinforcing rib 31. Take strengthening rib bowl shape forging height dimension 70mm, the inner chamber has 6 strengthening ribs 31, and forming die divide into mould 1 and bed die 2, contains 6 shaping grooves 12 on the round platform form bellying 11 of last mould 1 for the shaping of strengthening rib 31, and bed die 2 has the die cavity 21 of round platform form, is used for fixed forging 3, prevents under the condition of forging and pressing many times, causes forging 3 misplugging, leads to strengthening rib 31 to gnaw or the bottom is folding. The bulge 11 of the upper die 1 is matched with the die cavity 21 of the lower die 2 to form closed precision die forging, the closed precision die forging is used for solving the problems that the reinforcing rib of the bowl-shaped forge piece with the reinforcing rib is not full, the defects of gnawing and folding are easily caused, and the titanium alloy forge piece 3 is stuck on the upper die in the prior art, the trimming process is saved, and the obtained forge piece 3 is complete in streamline and free of cutting.
In this embodiment, in order to prevent the forging 3 from adhering to the upper die 1, a combined draft angle of 117 ° in the upper die, 217 ° in the lower die, and 3 ° is adopted.
According to an embodiment of the present invention, step S1 includes: preheating an upper die 1 and a lower die 2 at the preheating temperature of 200-250 ℃; and heating the cake blank to 20-50 ℃ below the phase transformation point, and keeping the temperature for 90-120 min to form a blank. In this embodiment, after the cake blank is heated and heat-preserved to form a blank, the cake blank is taken out of the furnace and is rapidly transferred into the mold cavity 21 of the lower mold 2, and the center of the blank is ensured to coincide with the center of the mold cavity 21 of the lower mold 2.
According to one embodiment of the present invention, in step S1, the glass lubricant is uniformly applied to the cake prior to heating. In step S2, after the billet is placed in the cavity 21 of the lower die 2, the upper surface of the billet is covered with the flake solid graphite powder. In step S2, the surface of the convex portion 11 of the upper die 1 is coated with a water-based graphite lubricant.
In the embodiment, glass lubricant needs to be uniformly coated before the cake blank is heated in a furnace, water-based graphite is coated on the surface of the boss 11 of the upper die 1, flaky solid graphite powder is sprinkled on the upper surface of the blank during die forging, and different draft slope combinations of 217 degrees and 3 degrees of the upper die 1 and the lower die are matched, so that the problem that the die 1 is adhered to the forge piece 3 is solved, redundant metal generated by burrs is saved, a set of trimming tool and trimming process is saved, the integrity of a dividing line at the edge part of the forge piece 3 is ensured, and the forge piece 3 and the die which are caused by the die 1 being adhered to the forge piece 3 can be prevented from being scrapped.
According to an embodiment of the present invention, after step S2, the method further includes:
s3, ejecting the forge piece 3 out of the lower die 2 through the ejector rod 4;
and S4, performing heat treatment on the forged piece 3.
In this embodiment, the bottom of the lower die 2 is provided with a through hole 22 communicated with the die cavity 21, the ejector rod 4 can enter the die cavity 21 through the through hole 22 to eject the forging 3 out of the die cavity 21, and when the upper end of the ejector rod 4 is located at the through hole 22, the through hole 22 is just plugged, that is, the lower die 2 and the ejector rod 4 together enclose the wall surface of the circular truncated cone-shaped die cavity 21 for fixing the forging 3, so that the forging 3 is prevented from being dislocated under the condition of multiple forging and pressing, and the reinforcing rib 31 is prevented from being bitten or the.
According to an embodiment of the present invention, step S4 includes:
s41, primary annealing: heating the forging piece 3 at 945-955 ℃, preserving heat for 1-1.5 hours, and cooling in air;
s42, secondary annealing: and heating the forging 3 at the heating temperature of 525-535 ℃, preserving heat for 6-6.5 hours, and cooling in air.
In the embodiment, the forge piece 3 is subjected to double annealing, the heating temperature of primary annealing is 950 ℃, the temperature is kept for 1 hour, and air cooling is carried out; the heating temperature of the secondary annealing is 530 ℃, the temperature is kept for 6 hours, and air cooling is carried out. Thus obtaining the forging 3 with both room temperature performance and high temperature performance meeting the requirements.
According to an embodiment of the present invention, step S1 is preceded by:
s01, sawing a bar stock with a preset volume;
s02, heating and upsetting the bar stock to form a cake blank, wherein the upsetting deformation is more than 50%.
In this embodiment, the calculation formula for the preset volume of the bar stock should ensure that the deformation amount is greater than 50% during upsetting, so as to obtain better structure performance.
According to an embodiment of the invention, in step S01, the preset volume is a calculated volume obtained by adding 1.5mm to 2.5mm to the height direction of the bowl-shaped forging 3 with the reinforcing ribs 31. In the embodiment, the original height direction of the bowl-shaped forge piece with the reinforcing ribs is increased by 2mm, the volume is calculated to obtain the preset volume, the preset volume is converted into the diameter and the length of the corresponding bar, and the sawing and blanking are performed through the sawing machine. During blanking, the volume of the forged piece is converted after being increased by 2mm according to the height of the original forged piece 3, and the forging die is the under-pressure amount of closed die forging, so that local underfill caused by local feeding unevenness is avoided.
According to an embodiment of the invention, in step S02, the cross-sectional area of the cake blank is larger than the area of the end face of the top bar 4, and the diameter of the cake blank is 2mm to 5mm smaller than the diameter of the die cavity 21. In the embodiment, the bar stock is heated and upset, the upset deformation is more than 50%, the diameter of the formed cake blank is required to be larger than that of the platform 42 where the ejector rod 4 is located, and the diameter of the cake blank is 2mm to 5mm smaller than that of the lower die cavity 21. The phenomenon that due to the fact that the diameter is too small, one side of the forge piece 3 is not full due to improper placement, and burrs are generated on the blank on the other side too much is avoided; or because the diameter is too big, the cake blank is blocked in the die cavity 21 of the lower die 2 and can not fall on the ejector rod 4, so that the cake blank is not placed correctly, the material feeding is uneven during the forming, and the final forming is influenced.
As shown in fig. 1, fig. 2, fig. 3 and fig. 4, the forging forming mold provided by the embodiment of the invention includes an upper mold 1 and a lower mold 2, the upper mold 1 is configured with a protruding portion 11, a forming groove 12 extending upward from a lower end surface along a height direction of the protruding portion 11 is provided on the protruding portion 11, the forming groove 12 is used for forming a reinforcing rib 31 of the forging 3, the lower mold 2 is configured with a mold cavity 21 matched with the protruding portion 11, and the height of the protruding portion 11 is smaller than the depth of the mold cavity 21.
The forging forming die provided by the embodiment of the invention is a forming die of a bowl-shaped forging with reinforcing ribs, the inner cavity of the bowl-shaped forging with the reinforcing ribs is provided with the reinforcing ribs 31, the forming die is divided into an upper die 1 and a lower die 2, the upper die 1 is provided with a circular truncated cone-shaped protruding part 11, the surface of the protruding part 11 is provided with a longitudinal forming groove 12 for forming the reinforcing ribs 31, the lower die 2 is provided with a circular truncated cone-shaped die cavity 21 for fixing the forging 3 to provide a forging space, and the phenomenon that the forging 3 is dislocated to cause gnawing of the reinforcing ribs 31 or bottom folding under the condition of repeated forging and pressing is prevented. The bulge 11 of the upper die 1 is matched with the die cavity 21 of the lower die 2 to form closed precision die forging, the closed precision die forging is used for solving the problems that in the prior art, the rib part of a bowl-shaped forge piece with reinforcing ribs is not full, the defects of gnawing and folding are easily caused, and the titanium alloy forge piece 3 is adhered to the upper die 1, meanwhile, the trimming procedure is saved, and the obtained forge piece 3 is complete in streamline and has no cut-off.
According to an embodiment provided by the invention, the forging forming die further comprises a top rod 4, the bottom of the lower die 2 is provided with a through hole 22 communicated with the die cavity 21, the top rod 4 can penetrate through the through hole 22 to enter the die cavity 21, and the end part of the top rod 4 blocks the through hole 22. In this embodiment, the bottom of the lower die 2 is provided with a circular through hole 22 communicated with the die cavity 21, the ejector rod 4 can enter the die cavity 21 through the through hole 22 to eject the forging 3 out of the die cavity 21, when the upper end of the ejector rod 4 is located at the through hole 22, the through hole 22 is just plugged, after the forging 3 is molded, the ejector rod 4 moves upwards to eject the forging 3 out of the die cavity 21, and the die is conveniently taken.
According to an embodiment of the present invention, the stem 4 comprises a rod 41 and a platform 42, the platform 42 is connected to an end of the rod 41, and the platform 42 is matched with the through hole 22. In this embodiment, the cross-sectional area of the rod body 41 is smaller than the area of the platform 42, the platform 42 serves as the end of the ejector rod 4, the upper surface of the platform and the inner surface of the lower die 2 jointly form a wall surface of the die cavity 21, that is, the end surfaces of the lower die 2 and the ejector rod 4 jointly enclose the wall surface of the truncated cone-shaped die cavity 21, and the platform is used for fixing the forging 3, so that the forging 3 is prevented from being dislocated under the condition of multiple forging and pressing, and the reinforcing rib 31 is prevented from being. The platform 42 is completely matched with the through hole 22 without generating gaps, and the streamline integrity of the forge piece 3 can be ensured during forging.
According to an embodiment of the present invention, the upper surface of the platform 42 is configured with a recess 43, and the recess 43 is used for corresponding to the positioning block 32 at the bottom of the formed forging 3. In this embodiment, the upper surface of the platform 42 is generally recessed 43, that is, a semicircular positioning block 32 can be formed at the bottom of the forging 3 during forging, so as to fix the forging 3, and avoid the problems of the reinforcing rib 31 being damaged and the bottom surface being folded due to the misalignment of the forging 3 during multiple forging.
According to an embodiment of the present invention, the inner bottom surface of the lower mold 2 is configured with a bottom protrusion 23, the bottom protrusion 23 is used for molding the bottom recess 33 of the forging 3, and the upper surface of the platform 42 is flush with the upper surface of the bottom protrusion 23. In this embodiment, an upward bottom protrusion 23 is formed on the bottom surface of the cavity 21 of the lower mold 2, and during the forging process, an upward recess 43 is formed at the bottom of the forging 3, wherein the upper surface of the platform 42 is flush with the upper surface of the bottom protrusion 23, and the recess 43 on the upper surface of the platform 42 is lower than the upper surface of the bottom protrusion 23.
According to an embodiment of the present invention, the draft of the upper mold 1 is 17 °, and the draft of the lower mold 2 is 17 ° and 3 °. In this embodiment, the problem that the forging 3 is adhered to the upper die 1 is solved by combining different draft angles of the upper die 117 degrees, the lower die 217 degrees and the lower die 3 degrees. Meanwhile, the redundant metal generated by burrs is saved, a set of trimming tool and trimming process are saved, and the integrity of a shunt line at the edge part of the forge piece 3 is ensured.
According to an embodiment provided by the invention, the number of the forming grooves 12 is 6, and the forming grooves are uniformly distributed on the convex part 11 along the circumferential direction. In the embodiment, the height dimension of the bowl-shaped forging 3 with the reinforcing ribs 31 to be forged is 70mm, and 6 reinforcing ribs 31 are arranged in the inner cavity, so that 6 forming grooves 12 are arranged. In other embodiments, the number and distribution of the forming grooves 12 can be selected according to actual needs.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A forging forming method is characterized in that: the method comprises the following steps:
s1, preprocessing the blank, the upper die and the lower die;
s2, placing the blank into the die cavity of the lower die, forging and pressing the blank for multiple times through the convex part of the upper die until the upper die is contacted with the lower die, and forming the blank into a bowl-shaped forge piece with reinforcing ribs.
2. The forging forming method of claim 1, wherein: step S1 includes: preheating the upper die and the lower die at the preheating temperature of 200-250 ℃; and heating the cake blank to 20-50 ℃ below the phase transformation point, and keeping the temperature for 90-120 min to form the blank.
3. The forging forming method of claim 2, wherein: in step S1, the biscuit is uniformly coated with a glass lubricant before heating.
4. The forging forming method of claim 1, wherein: in step S2, after the blank is placed in the cavity of the lower mold, the upper surface of the blank is covered with flake solid graphite powder.
5. The forging forming method of claim 4, wherein: in step S2, the convex portion surface of the upper die is coated with a water-based graphite lubricant.
6. The forging forming method of claim 1, wherein: step S2 is followed by:
s3, ejecting the forge piece out of the lower die through an ejector rod;
s4, performing heat treatment on the forged piece.
7. The forging forming method of claim 6, wherein: step S4 includes:
s41, primary annealing: heating the forging piece at 945-955 ℃, preserving heat for 1-1.5 hours, and cooling in air;
s42, secondary annealing: and heating the forging at 525-535 ℃, preserving heat for 6-6.5 hours, and cooling in air.
8. The forging forming method of claim 6, wherein: before step S1, the method further includes:
s01, sawing a bar stock with a preset volume;
s02, heating and upsetting the bar stock to form a cake blank, wherein the upsetting deformation is more than 50%.
9. The forging forming method of claim 8, wherein: in step S01, the preset volume is a calculated volume obtained by adding 1.5mm to 2.5mm in the height direction of the bowl-shaped forging with the reinforcing rib.
10. The forging forming method of claim 8, wherein: in step S02, the cross-sectional area of the cake blank is larger than the end surface area of the ejector pin, and the diameter of the cake blank is 2mm to 5mm smaller than the diameter of the die cavity.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114589280A (en) * | 2022-04-19 | 2022-06-07 | 无锡派克新材料科技股份有限公司 | High-temperature antioxidant alloy die forging die and die forging method thereof |
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Effective date of registration: 20241023 Address after: Room 01-04, 8th Floor, Unit 101, Building 2, Zone 2, No. 186 South Fourth Ring West Road, Fengtai District, Beijing 100160 Patentee after: Beijing Zhongtai Kexing Technology Development Co.,Ltd. Country or region after: China Address before: Room 105, no.10-1 Xinlong street, Hunnan District, Shenyang City, Liaoning Province Patentee before: Shenyang Titanium Equipment Manufacturing Co.,Ltd. Country or region before: China |