CN111730016A - Reduce jumping-up machine of forging surface fracture - Google Patents
Reduce jumping-up machine of forging surface fracture Download PDFInfo
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- CN111730016A CN111730016A CN202010594199.0A CN202010594199A CN111730016A CN 111730016 A CN111730016 A CN 111730016A CN 202010594199 A CN202010594199 A CN 202010594199A CN 111730016 A CN111730016 A CN 111730016A
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- Prior art keywords
- forging
- upsetting
- surface cracking
- auxiliary
- upsetter
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- 238000005242 forging Methods 0.000 title claims abstract description 53
- 238000005336 cracking Methods 0.000 claims abstract description 16
- 238000005056 compaction Methods 0.000 claims description 38
- 238000013016 damping Methods 0.000 claims description 10
- 238000000034 method Methods 0.000 abstract description 21
- 230000008569 process Effects 0.000 abstract description 16
- 239000002184 metal Substances 0.000 abstract 1
- 230000035939 shock Effects 0.000 description 11
- 238000010521 absorption reaction Methods 0.000 description 6
- 238000001125 extrusion Methods 0.000 description 6
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 230000001629 suppression Effects 0.000 description 4
- 208000037656 Respiratory Sounds Diseases 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 230000032683 aging Effects 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 230000002238 attenuated effect Effects 0.000 description 2
- 230000001079 digestive effect Effects 0.000 description 2
- 229910000734 martensite Inorganic materials 0.000 description 2
- 239000010955 niobium Substances 0.000 description 2
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 2
- 230000000750 progressive effect Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000035882 stress Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910001105 martensitic stainless steel Inorganic materials 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000004881 precipitation hardening Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000003856 thermoforming Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- 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
-
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
The invention discloses an upsetting machine for reducing surface cracking of a forging, relates to the field of metal forging, and aims to solve the problem that the surface of the forging is easy to crack in the forging process, and the technical scheme is as follows: the upsetting machine comprises an upsetting disk, wherein the upsetting disk comprises a first compacted part located in the center of the upsetting disk and an auxiliary compacted part located on the outer ring of the first compacted part, the first compacted part and the auxiliary compacted part are connected through a step with an inclination, and the inclination direction is set from high to low from the first compacted part to the auxiliary compacted part. The upsetting disk for reducing surface cracking of the forging piece can effectively reduce the surface cracking possibility of the forging piece.
Description
Technical Field
The invention relates to the technical field of section bar production, in particular to an upsetting machine for reducing surface cracking of a forged piece.
Background
The 17-4PH alloy is precipitation, hardening and martensitic stainless steel composed of copper, niobium and columbium, the performance of 17-4PH is characterized in that the strength grade is easy to adjust, namely the strength grade can be adjusted by changing a heat treatment process, the precipitation hardening phase formed by martensitic phase transformation and aging treatment is a main strengthening means, and the 17-4PH alloy has good attenuation performance, strong corrosion, fatigue and water drop resistance. Has high strength, high hardness, better welding performance and corrosion resistance. Has been widely popularized and applied to the industries of valves, shafts and chemical fibers, high-strength parts with certain corrosion resistance requirements and the like.
After the product is subjected to heat treatment, the mechanical property of the product is more complete, and the compressive strength of the product can reach 1100-1300Mpa (160-190 ksi). This grade cannot be used at temperatures above 300 ℃ (572 ° f) or very low temperatures, it has good corrosion resistance to both atmospheric and dilute acids or salts, as does 304 and 430. Thermoforming should be carried out at a temperature in the range of 950-1200 deg.C (1742-2192 deg.F). The complete heat treatment includes solid-solution annealing, cooling (below 25 ℃) and aging (at a given temperature).
In the hot forging forming process, due to the martensite matrix, the forging temperature range is narrow, microcracks are easily generated on the forging surface, and the subsequent processing is influenced by cracking.
The conventional forging adopts 700-width upper and lower flat anvils for drawing, and in the drawing process, each anvil is connected with a step of the anvil to cause folding and generate cracking tendency, so that the surface of a product has too many cracks and cannot be processed and molded.
Therefore, a new solution is needed to solve this problem.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide the upsetting machine for reducing the surface cracking of the forged piece, which can ensure that the hard damage cannot be generated in the drawing process of the forged piece by arranging the inclined steps, thereby obviously improving the surface cracking condition of the forged piece.
The technical purpose of the invention is realized by the following technical scheme: the upsetting machine comprises an upsetting disk, wherein the upsetting disk comprises a first compacted part located in the center of the upsetting disk and an auxiliary compacted part located on the outer ring of the first compacted part, the first compacted part and the auxiliary compacted part are connected through a step with an inclination, and the inclination direction is set from high to low from the first compacted part to the auxiliary compacted part.
Through adopting above-mentioned technical scheme, be divided into two parts with the setting of upset disk, the first part is for being located the first real part of suppression of central part, this part mainly used and forging between the contact, the supplementary real part of suppression that is located the outer lane is as the second part, after setting up like this, the forging on the first real part of suppression is in through extrusion upset in-process, at whole deformation in-process, the center can obtain effective compaction, supplementary real part of suppression also can contact with the work piece simultaneously, form whole face contact, thereby make forging surface crack reduce very much, can effectively improve the problem that produces the crackle.
The invention is further configured to: the upsetting disc is provided with a damping cavity.
Through adopting above-mentioned technical scheme, set up the shock attenuation cavity in the upset dish for absorb the shaking force that produces at the upset in-process, thereby reduce the vibrations feedback to the forging, thereby make the forging can receive more stable forging power, thereby avoid making forging surface stress concentrate and produce the crackle.
The invention is further configured to: and a balance block which can move up and down is arranged in the damping cavity.
By adopting the technical scheme, the movable balance block is arranged in the damping cavity so as to absorb the vibration force generated in the upsetting process more quickly and better and transmit the vibration force to the forge piece as less as possible.
The invention is further configured to: the damping cavity is internally provided with a stroke groove, two sides of the balance block are provided with limiting bulges, and the limiting bulges extend into the stroke groove and are used for limiting the movement amplitude of the balance block.
Through adopting above-mentioned technical scheme, set up spacing protruding home range who restricts the balancing piece in the both sides of balancing piece, conveniently install simple structure to the balancing piece.
The invention is further configured to: the stroke groove is in an oval shape.
By adopting the technical scheme, the stroke groove is set to be elliptical, so that the balance block can better swing back and forth in the upsetting disc when absorbing the force generated by digestive resonance, and the force is gradually eliminated.
The invention is further configured to: and an elastic damping piece is arranged between the limiting protrusion and the groove wall of the stroke groove.
Through adopting above-mentioned technical scheme, the installation elasticity buffer between spacing arch and stroke groove is for the better group balancing piece adsorbs the power that vibrations produced to make the upset dish more stable.
The invention is further configured to: the limiting bulge is positioned at the non-circle center position of the balance block, so that the balance block forms an eccentric wheel structure.
Through adopting above-mentioned technical scheme, set up the balancing piece into the eccentric wheel structure, set up like this and can make the balancing piece progressively dissolve the residual force that vibrations produced to at the balancing piece rotation in-process, power is progressively attenuated, and like this to the forging on the upset dish, also progressively reduce vibrations, thereby protection forging that can be better makes the great reduction of crackle on its surface.
In conclusion, the invention has the following beneficial effects: through setting up first compacter portion and supplementary compacter portion, make the forging at the upset process, surface deformation is a progressive process, makes the extrusion force that it received effectively extend to avoided the forging surface to form the crack, and be provided with the balancing piece in the upset dish and be used for absorbing the residual force that vibrations produced, avoid on the residual force feeds back to the forging, make the forging receive impact in the opposite direction many times and produce the crack, thereby more effectual protection the forging, improve the yield of forging.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic plan view of the present invention;
fig. 3 is a cross-sectional view of the present invention.
In the figure: 1. a first compaction portion; 2. an auxiliary compaction part; 3. a step; 4. a shock-absorbing cavity; 5. a stroke slot; 6. a counterbalance; 7. a limiting bulge; 8. an elastic shock absorbing member.
Detailed Description
The invention is described in detail below with reference to the figures and examples.
An upsetting machine for reducing surface cracking of a forged piece comprises an upsetting disk, as shown in fig. 1 and 2, wherein the upsetting disk is arranged in a column shape and comprises a first compaction part 1 positioned in a central part and an auxiliary compaction part 2 positioned at the outer ring of the first compaction part 1, the first compaction part 1 is connected with the auxiliary compaction part 2 through an inclined step 3, the inclined direction is set from the first compaction part 1 to the auxiliary compaction part 2 from high to low, so that the upsetting disk is mainly used for being in direct contact with the forged piece at the first compaction part 1 in the central part, the auxiliary compaction part 2 positioned at the outer ring is used as a second part, the auxiliary compaction part 2 at the edge can extrude the forged piece in the contact process of the first compaction part 1 and the forged piece, and the main extrusion is carried out through the first compaction part 1, so that the center can be effectively compacted in the whole deformation process, and the whole surface contact can be formed, so that the surface cracks of the forge piece are reduced greatly, the problem of crack generation can be effectively improved, the first compaction part 1 can be provided with a protrusion which protrudes out of the auxiliary compaction part 2 to form a protrusion, namely, a step 3 is formed between the first compaction part 1 and the auxiliary compaction part 2, and the step 3 can be arranged in a circular arc shape, so that the acting force of the first compaction part 1 can be effectively increased, the center of the forge piece can be effectively compacted, the auxiliary compaction part can be used for carrying out auxiliary compaction on the edge part of the center of the forge piece while the auxiliary compaction part is effectively compacted in the center, which is equivalent to carrying out pre-compaction treatment, then when the upsetting disk is positioned at the surface change position of the forge piece for extrusion, the part is extruded after being pre-compacted in the positions except the center, and the surface.
In order to further increase the mechanical shock resistance of the upsetting disk, the upsetting disk is provided with a shock absorption cavity 4, that is, as shown in fig. 3, the shock absorption cavity 4 is located in the middle of the bottom of the upsetting disk and is used for absorbing shock force generated in the upsetting process of a forge piece, so that shock feedback to the forge piece is reduced, the forge piece can be subjected to more stable forging force, cracks caused by stress concentration on the surface of the forge piece are avoided, meanwhile, a balance block 6 capable of moving up and down is installed in the shock absorption cavity 4, and the balance block 6 is used for more quickly and better absorbing shock force generated in the upsetting process and transmitting the shock force to the forge piece as much as possible.
Namely, a stroke groove 5 is arranged in the damping cavity 44, the two sides of the balance block 6 are provided with limiting bulges 7, and the limiting bulges 7 extend into the stroke groove 5 to limit the moving range of the balance block 6, so that the moving range of the balance block 6 is limited, the balance block 6 is convenient to install, and the structure is simple; the stroke groove 5 can be arranged in an elliptical shape, so that the motion trail of the balance weight 6 moves along with the shape of the stroke groove 5, and the balance weight 6 can better absorb the force generated by digestive resonance in the upsetting disc through circular rotation so as to eliminate the force; an elastic shock absorption piece 8 can be arranged between the limiting bulge 7 and the groove wall of the stroke groove 5, so that the balance block 6 can better absorb the force generated by vibration, and the upsetting disc is more stable.
And the limiting bulge 7 is positioned at the non-circle center position of the balance block 6 to enable the balance block 6 to form an eccentric wheel structure, so that the balance block 6 can gradually relieve the residual force generated by vibration, and in the rotating process of the balance block 6, the force is gradually attenuated, so that the vibration of the forging on the upsetting disk is also gradually reduced, the forging can be better protected, and the surface cracks of the forging are greatly reduced.
The following is a description of the power of the upset disk during operation: the forging is placed below the upsetting disk, a hydraulic system is arranged above the forging and is connected with the upsetting disk and used for knocking and extruding the forging so as to carry out forging and upsetting procedures, when the forging receives impact extrusion, the forging receives impact of a first compaction part 1 and an auxiliary compaction part 2, because the first compaction part 1 is used as a main compaction part, the auxiliary compaction part 2 around the first compaction part can impact the surface of the forging while being compacted at the center, so that the pre-compaction effect is achieved, cracks on the surface of the forging can be effectively reduced, meanwhile, when the forging transmits the force generated by knocking to the upsetting disk, the vibration absorption cavity 4 of the upsetting disk can absorb and dissolve part of vibration force, meanwhile, the balance block 6 positioned in the vibration absorption cavity 4 can rotate along a stroke groove under the force, and the transmitted vibration force can be absorbed and dissolved in the rotating process, the force of the vibration force generated by the upsetting disk fed back to the forge piece is greatly reduced, so that the impact on the surface of the forge piece is reduced, and the possibility of surface cracking of the forge piece is improved.
Through setting up supplementary real part of pressure 2 like this, make the forging in the upsetting process, surface deformation is a progressive process, makes the extrusion force that it received can effectively be extended to avoided the forging surface to form the crack, and be provided with balancing piece 6 in the upsetting dish and be used for absorbing the residual force that vibrations produced, avoid the residual force to feed back on the forging, make the forging receive impact in the opposite direction many times and produce the crack, thereby more effective protection the forging, improve the yield of forging.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (7)
1. The utility model provides a reduce upsetting machine of forging surface fracture which includes the upset dish, its characterized in that: the upsetting disc comprises a first compaction part (1) located in the center part and an auxiliary compaction part (2) located on the outer ring of the first compaction part (1), the first compaction part (1) is connected with the auxiliary compaction part (2) through a step (3) with an inclined angle, and the inclined direction is set from high to low from the first compaction part (1) to the auxiliary compaction part (2).
2. The upsetter for reducing surface cracking of forgings according to claim 1, wherein: the upsetting disc is provided with a damping cavity (4).
3. The upsetter for reducing surface cracking of forgings according to claim 2 wherein: and a balance block (6) which can move up and down is arranged in the damping cavity (4).
4. The upsetter for reducing surface cracking of forgings according to claim 3 wherein: a stroke groove (5) is formed in the damping cavity (4), limiting protrusions (7) are arranged on two sides of each balance block (6), and the limiting protrusions (7) extend into the stroke grooves (5) and are used for limiting the moving amplitude of the balance blocks (6).
5. The upsetter for reducing surface cracking of forgings according to claim 4 wherein: the stroke groove (5) is arranged in an oval shape.
6. The upsetter for reducing surface cracking of forgings according to claim 5, wherein: and an elastic damping part (8) is arranged between the limiting bulge (7) and the groove wall of the stroke groove (5).
7. The upsetter for reducing surface cracking of forgings according to claim 5, wherein: the limiting bulge (7) is positioned at the non-circle center position of the balance block (6) to enable the balance block (6) to form an eccentric wheel structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010594199.0A CN111730016A (en) | 2020-06-24 | 2020-06-24 | Reduce jumping-up machine of forging surface fracture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010594199.0A CN111730016A (en) | 2020-06-24 | 2020-06-24 | Reduce jumping-up machine of forging surface fracture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111730016A true CN111730016A (en) | 2020-10-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010594199.0A Pending CN111730016A (en) | 2020-06-24 | 2020-06-24 | Reduce jumping-up machine of forging surface fracture |
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| Country | Link |
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| CN (1) | CN111730016A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19835478A1 (en) * | 1998-08-06 | 2000-02-17 | Seydo Praezisionsmechanik Gmbh | Fabrication method for seamless tires for railways uses forging/pressing method to reduce height of pre-formed steel block, and upsetting method to form central hole |
| CN101181732A (en) * | 2007-12-20 | 2008-05-21 | 上海交通大学 | Forging method of cymbal anvil for heavy forging upsetting process |
| CN202701242U (en) * | 2012-05-15 | 2013-01-30 | 江苏润扬重工有限公司 | Tapered upsetting plate |
| CN204171247U (en) * | 2014-08-01 | 2015-02-25 | 宁波北仑一特特殊钢有限公司 | A kind of forging hammer damping device |
| CN106975719A (en) * | 2017-06-01 | 2017-07-25 | 东南大学 | A kind of forging method of cogging |
| CN208728604U (en) * | 2018-07-24 | 2019-04-12 | 无锡继平锻造有限公司 | Reduce the forging press of impact vibration |
| CN110966160A (en) * | 2019-12-31 | 2020-04-07 | 无锡五洋赛德压缩机有限公司 | Novel air compressor's bent axle |
| CN212419473U (en) * | 2020-06-24 | 2021-01-29 | 江阴振宏重型锻造有限公司 | Reduce jumping-up machine of forging surface fracture |
-
2020
- 2020-06-24 CN CN202010594199.0A patent/CN111730016A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19835478A1 (en) * | 1998-08-06 | 2000-02-17 | Seydo Praezisionsmechanik Gmbh | Fabrication method for seamless tires for railways uses forging/pressing method to reduce height of pre-formed steel block, and upsetting method to form central hole |
| CN101181732A (en) * | 2007-12-20 | 2008-05-21 | 上海交通大学 | Forging method of cymbal anvil for heavy forging upsetting process |
| CN202701242U (en) * | 2012-05-15 | 2013-01-30 | 江苏润扬重工有限公司 | Tapered upsetting plate |
| CN204171247U (en) * | 2014-08-01 | 2015-02-25 | 宁波北仑一特特殊钢有限公司 | A kind of forging hammer damping device |
| CN106975719A (en) * | 2017-06-01 | 2017-07-25 | 东南大学 | A kind of forging method of cogging |
| CN208728604U (en) * | 2018-07-24 | 2019-04-12 | 无锡继平锻造有限公司 | Reduce the forging press of impact vibration |
| CN110966160A (en) * | 2019-12-31 | 2020-04-07 | 无锡五洋赛德压缩机有限公司 | Novel air compressor's bent axle |
| CN212419473U (en) * | 2020-06-24 | 2021-01-29 | 江阴振宏重型锻造有限公司 | Reduce jumping-up machine of forging surface fracture |
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