CN106695249B - Forging forming process of high-pressure common rail pipe - Google Patents
Forging forming process of high-pressure common rail pipe Download PDFInfo
- Publication number
- CN106695249B CN106695249B CN201510496763.4A CN201510496763A CN106695249B CN 106695249 B CN106695249 B CN 106695249B CN 201510496763 A CN201510496763 A CN 201510496763A CN 106695249 B CN106695249 B CN 106695249B
- Authority
- CN
- China
- Prior art keywords
- forging
- die
- common rail
- rail pipe
- pressure common
- 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.)
- Active
Links
Landscapes
- Forging (AREA)
Abstract
The invention relates to a forging forming process of a high-pressure common rail pipe, which comprises the following steps of S1: blanking; s2: heating; s3: pre-forging: s4: fine forging; s5: trimming; s6: controlling the temperature and cooling; s7: the shot blasting comprises seven steps, in addition, a special forging die is adopted for pre-forging and finish forging in the steps S3 and S4, and a special trimming die is adopted for trimming in the step S5. (2) Only one forging and pressing device is needed, so that the investment cost of the device is reduced, the temperature change of the forge piece between the preforging and the finish forging is smaller, and the forming is facilitated.
Description
Technical Field
The invention relates to a forging forming process, in particular to a forging forming process of a high-pressure common rail pipe.
background
The high-pressure common rail electric injection technology refers to an oil supply mode which completely separates the generation of injection pressure and the injection process from each other in a closed loop system consisting of a high-pressure oil pump, a pressure sensor and an Electronic Control Unit (ECU). The high-pressure fuel oil output by the oil pump is accumulated together through the large-volume common rail pipe, so that the pressure fluctuation in the offset fuel oil is eliminated, the constant high-pressure fuel oil is formed and is distributed and sent to each oil injector, and the high-speed electromagnetic valve on the oil injector is used for opening and closing operation, so that the oil quantity of the combustion chamber of the diesel engine is controlled in a timing and quantitative mode. Therefore, the optimal fuel atomization, the most efficient combustion rate, the most accurate ignition node and energy of the diesel engine are realized, and the minimum exhaust emission is ensured.
As shown in figure 1, a plurality of high-pressure packages are distributed on the high-pressure common rail pipe, lugs are distributed on the side surface of the high-pressure common rail pipe, when the high-pressure common rail pipe is formed by adopting a general forging process of pre-forging and finish forging, the pre-forging can cause die sticking, so that production is interrupted, and the high-pressure packages and the lugs have the phenomenon of insufficient filling at the edges, so that forged pieces are scrapped. During forging, one station is pre-forged, one station is finish-forged, two presses are required to be arranged in production, and equipment investment is large.
Disclosure of Invention
The invention aims to overcome the technical defects of insufficient forge piece and mucosa during forging of the high-pressure common rail pipe, and provides a novel forging forming process with stable material utilization rate and forging product quality in the forging forming process of the high-pressure common rail pipe.
In order to achieve the purpose, the invention adopts the technical scheme that: a forging forming process of a high-pressure common rail pipe comprises the following steps: s1: blanking: sawing or shearing the hot-rolled round bar into a size and a weight required by a high-pressure common rail pipe blank; s2: heating: heating a high-pressure common rail pipe blank by a medium-frequency induction furnace; s3: pre-forging: pre-forging the heated high-pressure common rail pipe blank by using a pre-forging die to form the high-pressure common rail pipe blank so that the shape and the size of the high-pressure common rail pipe blank meet the size required by the next precision forging; s4: and (3) precision forging: performing precision forging forming on the pre-forged piece by using a precision forging die to enable the shape and the size of the pre-forged piece to meet the size required by the precision forged piece; s5: trimming: carrying out cutting operation on the flash of the precision forging piece on the high-pressure common rail pipe trimming die; s6: temperature control and cooling: a plurality of fans are arranged above the conveyor belt and used for air-cooling the forged piece on the conveyor belt; s7: shot blasting: and removing oxide skin on the surface of the forging.
in the above steps, a roll forging step is further provided between the heating step and the pre-forging step, and the specific process is as follows: the roll forging machine is used for roll forging the part of the high-pressure common rail pipe blank, which is preformed into the high-pressure bag, the oil return bag and the lug and has a larger cross section area, into a large diameter, and the other parts are roll forged into a small diameter.
In the above steps, the pre-forging step S3 and the precision forging step S4 share one high-pressure common rail pipe forging die, the high-pressure common rail pipe forging die includes an upper forging die and a lower forging die, and the upper forging die is provided with a first pre-forging cavity and a first precision forging cavity; a second pre-forging cavity and a second finish forging cavity are arranged on the forging lower die, and the first pre-forging cavity and the second pre-forging cavity form a pre-forging profile model of the high-pressure common rail pipe; and the first precision forging cavity and the second precision forging cavity form a precision forging profile model of the high-pressure common rail pipe.
In the above steps, the two ends of the second pre-forging cavity are provided with the material blocking blocks, and the two ends of the first pre-forging cavity are provided with the material blocking grooves.
In the steps, a plurality of second guide pillars are arranged on the forging lower die, the second guide pillars and the forging lower die are in interference fit, and the second guide pillars and the forging lower die are assembled in a hot sleeve mode; and a plurality of third guide pillar holes are formed in the forging upper die, and the second guide pillars are in clearance fit with the third guide pillar holes to play a guiding role.
in the above step, a counter bore is arranged below each second guide pillar on the lower forging die.
In the above steps, the forging upper die and the forging lower die are both provided with positioning key slots, and the forging upper die and the forging lower die are positioned on respective die frames through the positioning key slots respectively.
in the above steps, the forging upper die and the forging lower die are provided with pressing plate grooves at both ends, and the forging upper die and the forging lower die are fixed on the corresponding die sets through the pressing plate grooves.
In the above step, the trimming device of the high-pressure common rail pipe used in the trimming step S5 includes an upper trimming device and a lower trimming device, the upper trimming device includes an upper template, a raised head mold is installed below the upper template, the lower trimming device includes a lower template, and a cavity mold is installed above the lower template; the raised head die is fixed below the upper die plate through an upper pressing plate, and the concave cavity die is fixed above the lower die plate through a lower pressing plate; and a cushion block is also arranged between the cavity die and the lower die plate.
In the above steps, a first guide pillar hole is arranged on the cavity die, a first guide pillar is arranged on the first guide pillar hole, the first guide pillar hole and the first guide pillar are in interference fit, and the first guide pillar hole and the first guide pillar are assembled in a shrink fit manner; and a second third guide pillar hole is formed in the raised head die and is in clearance fit with the first guide pillar.
The invention has the beneficial effects that: (1) by adopting the special forging die, the problems of insufficient filling and sticking during forging of the traditional forge piece are solved, the material utilization rate is improved, and the product quality is stable. (2) Only one forging and pressing device is needed, so that the investment cost of the device is reduced, the temperature change of the forge piece between the preforging and the finish forging is smaller, and the forming is facilitated.
Drawings
Fig. 1 is a schematic structural view of a conventional high-pressure common rail pipe.
FIG. 2 is a schematic structural diagram of a high-pipe common rail pipe blank after blanking in the example.
FIG. 3 is a schematic view of the roll forged blank in the embodiment.
FIG. 4 is a schematic structural view of the pre-forged blank in the embodiment.
FIG. 5 is a schematic structural view of the blank after finish forging in the example.
FIG. 6 is a side bottom view of the forging upper die.
FIG. 7 is a schematic side plan view of the forging upper die.
FIG. 8 is a left side view of the forging cope die.
FIG. 9 is a sectional view taken along the direction B-B of the upper forging die.
FIG. 10 is a side bottom view of the forging lower die.
Fig. 11 is a schematic side plan view of the forging lower die.
FIG. 12 is a left side view of the forging die.
3 FIG. 3 13 3 is 3 a 3 sectional 3 view 3 taken 3 along 3 the 3 line 3 A 3- 3 A 3 of 3 the 3 forging 3 lower 3 die 3. 3
Fig. 14 is a schematic structural view of the trimming die.
FIG. 15 is a schematic view of a cavity die configuration of the trimming die.
Fig. 16 is a schematic view of a nose die configuration of a trimming die.
In the figure: 1. forging an upper die; 1-1, a first pre-forging cavity; 1-2, a first precision forging cavity; 1-3, a material blocking groove; 1-4. a third guide pillar hole; 2. forging a lower die; 2-1, a second pre-forging cavity; 2-2, a second precision forging cavity; 2-3, a material blocking block; 2-4, a second guide pillar; 2-5. counter bore; 3. a positioning key groove; 4. a platen slot; 5. hoisting holes; 6-1, mounting a template; 6-2, forming a raised head mould; 6-3, pressing the upper plate; 6-4, a second guide pillar hole; 6-5, male die edge; 7-1, a lower template; 7-2. a cavity die; 7-3, pressing the plate downwards; 7-4, cushion blocks; 7-5, a first guide pillar hole; 7-6, a first guide pillar; 7-7, die edge; 8. a high-voltage pack; 9. returning oil; 10. a lug.
Detailed Description
The high-pressure common rail pipe comprises a high-pressure bag 8, an oil return bag 9 and a lug 10, and is shown in figure 1. In order to explain the technical scheme of the invention in more detail, the embodiment provides an example of a forging forming process of a high-pressure common rail pipe, which comprises the following steps: (1): blanking: see fig. 2, a circular saw is used for blanking. (2): heating: and heating by adopting an intermediate frequency induction furnace at the heating temperature of 1150-1250 ℃. (3): roll forging: the material of the blank is redistributed by using a roll forging machine to ensure that the die cavity can be filled with the material during forming, and the figure 3 shows. (4): pre-forging: the blank is pre-formed to a shape approximating the dimensions of the finish forge. See fig. 4. (5): and (3) precision forging: and (3) placing the preforging piece into a precision forging die for forming, so that the size meets the requirement of a forging drawing. See fig. 5. (6): trimming: and cutting off the flash of the precision forging on a press. (7): temperature control and cooling: a plurality of fans are arranged above the conveyor belt, air cooling is carried out on the forged piece on the conveyor belt, and the cooling speed of the forged piece is controlled. (8): shot blasting: and removing oxide skin on the surface of the forging.
The invention also provides a forging die of the high-pressure common rail pipe, which comprises an upper forging die 1 and a lower forging die 2 as shown in fig. 6 and 10, wherein the upper forging die 1 is provided with a first pre-forging cavity 1-1 and a first finish forging cavity 1-2; a second pre-forging cavity 2-1 and a second finish forging cavity 2-2 are arranged on the forging lower die 2, and the first pre-forging cavity 1-1 and the second pre-forging cavity 2-1 form a pre-forging profile model of the high-pressure common rail pipe; the first precision forging cavity 1-2 and the second precision forging cavity 2-2 form a precision forging outline model of the high-pressure common rail pipe. The pre-forging die cavity and the finish forging die cavity are distributed on one module side by side, so that materials are saved, and the pre-forging high-pressure package is distributed on the upper die, so that the forming is facilitated; the precision forging high-pressure packs are distributed on the lower die and are convenient to position, the two ends of the second pre-forging cavity 2-1 are provided with material blocking blocks 2-3, and the two ends of the first pre-forging cavity 1-1 are provided with material blocking grooves 1-3. Two ends of the two pre-forging cavities are respectively provided with a material blocking block and a material blocking groove, so that the mold cavities can be filled with materials conveniently. Preferably, in order to meet the requirements required by forging, the surfaces of the first pre-forging cavity 1-1, the first finish forging cavity 1-2, the second pre-forging cavity 2-1 and the second finish forging cavity 2-2 are strengthened by a nitriding process, and the surface hardness reaches HRC 45-48.
as shown in fig. 11 to 13, a plurality of guide pillars 2-4 are arranged on the forging lower die 2, and the guide pillars 2-4 and the forging lower die 2 are in interference fit and are assembled in a shrink fit manner; as shown in fig. 7 to 9, a plurality of guide post holes 1-4 are formed in the upper forging die 1, the guide posts 2-4 are in clearance fit with the guide post holes 1-4 to play a guiding role, the guide posts are used for replacing lock catches to guide and balance the offset force between the upper forging die and the lower forging die, and the guiding precision is increased from 0.5mm to 0.1 mm; counter bores 2-5 are arranged below each guide pillar 2-4 on the forging lower die 2, so that the position of an orifice can be prevented from being hit by the upper die during forging and hitting, and the guide pillar hole is effectively protected. As shown in fig. 7 and 11, the forging upper die 1 and the forging lower die 2 are both provided with positioning key slots 3, and the forging upper die 1 and the forging lower die 2 are positioned on respective die frames through the positioning key slots 3, so that the positioning accuracy is high, and the misalignment is effectively reduced.
As shown in fig. 8 and 12, both ends of the forging upper die 1 and the forging lower die 2 are further provided with a platen groove 4, and the forging upper die 1 and the forging lower die 2 are fixed on the respective corresponding die sets through the platen groove 4. The die filling and the dismounting are simple and convenient. The forging upper die and the forging lower die are large in volume and mass, and therefore the hoisting holes 5 are formed in the two sides of the forging upper die and the two sides of the forging lower die, and the forging upper die and the forging lower die are convenient to hoist in transportation and installation and disassembly.
The invention also provides an edge cutting device of the high-pressure common rail pipe, which comprises an upper edge cutting device and a lower edge cutting device, as shown in fig. 14, the upper edge cutting device comprises an upper template 6-1, the raised head die 6-2 is fixed below the upper template 6-1 through an upper pressing plate 6-3, the lower edge cutting device comprises a lower template 7-1, and the cavity die 7-2 is fixed above the lower template 7-1 through a lower pressing plate 7-3; the use of the upper press plate 6-3 and the lower press plate 7-3 makes the die-filling and disassembling of the present invention simple and convenient. And a cushion block 7-4 is arranged between the cavity die 7-2 and the lower template 7-1, so that a space is reserved for the forged piece falling after trimming, and the forged piece is convenient to take out. As shown in fig. 15, a first guide post hole 7-5 is formed in the cavity die 7-2, a first guide post 7-6 is mounted in the first guide post hole 7-5, and the first guide post hole 7-5 and the first guide post 7-6 are assembled in a shrink fit manner; as shown in fig. 16, a second guide post hole 6-4 is formed in the raised head die 6-2, and the second guide post hole 6-4 is in clearance fit with the first guide post 7-6, so that the guide precision during trimming is improved; the abrasion and damage of the cutting edge of the female die and the raised head of the male die are reduced, and the service life of the trimming die is prolonged; preferably, the unilateral clearance between the convex die edge 6-5 of the raised head die 6-2 and the concave die edge 7-7 of the concave cavity die 7-2 is 0.8mm, and the trimming cutting edge is strengthened by welding, so that the trimming efficiency of the die is improved, the service life of the die is prolonged, and the cost is reduced. Preferably, the surfaces of the raised head die 6-2 and the cavity die 7-2 are both formed by strengthening through a nitriding process, the die hardness of the raised head die 6-2 and the die hardness of the cavity die 7-2 are HRC35-38, the material shrinkage rate of the raised head die 6-2 and the material shrinkage rate of the cavity die 7-2 are 1.1%, the shrinkage ratio is reasonable, and the trimmed parts have few residual fins and burrs.
during trimming operation, the high-pressure common rail pipe forging is placed on the concave cavity die 7-2, one side of a high-pressure bag of the high-pressure common rail pipe forging is arranged at the lower part, and the raised head die 6-2 impacts downwards, so that die processing and forging positioning are facilitated, and the shape of a contact surface of a punch is simplified on the basis of ensuring a certain contact area.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. A forging forming process of a high-pressure common rail pipe is characterized by comprising the following steps:
S1: blanking: sawing or shearing the hot-rolled round bar into a size and a weight required by a high-pressure common rail pipe blank;
S2: heating: heating a high-pressure common rail pipe blank by a medium-frequency induction furnace;
S3: pre-forging: pre-forging the heated high-pressure common rail pipe blank by using a pre-forging die to form the high-pressure common rail pipe blank so that the shape and the size of the high-pressure common rail pipe blank meet the size required by the next precision forging;
s4: and (3) precision forging: performing precision forging forming on the pre-forged piece by using a precision forging die to enable the shape and the size of the pre-forged piece to meet the size required by the precision forged piece;
S5: trimming: carrying out cutting operation on the flash of the precision forging piece on the high-pressure common rail pipe trimming die;
S6: temperature control and cooling: a plurality of fans are arranged above the conveyor belt and used for air-cooling the forged piece on the conveyor belt;
S7: shot blasting: removing oxide skin on the surface of the forging;
A roll forging step is also arranged between the heating step S2 and the pre-forging step S3, and the specific process is as follows: roll forging the part of the high-pressure common rail pipe with larger cross section area on the high-pressure common rail pipe blank preformed into a high-pressure bag, an oil return bag and a lug into a thick diameter by using a roll forging machine, and roll forging the other parts into a thin diameter;
The pre-forging step S3 and the precision forging step S4 share one high-pressure common rail pipe forging die, the high-pressure common rail pipe forging die comprises an upper forging die (1) and a lower forging die (2), and a first pre-forging cavity (1-1) and a first precision forging cavity (1-2) are formed in the upper forging die (1); a second pre-forging cavity (2-1) and a second precision forging cavity (2-2) are arranged on the forging lower die (2), and the first pre-forging cavity (1-1) and the second pre-forging cavity (2-1) form a pre-forging profile model of the high-pressure common rail pipe; the first precision forging cavity (1-2) and the second precision forging cavity (2-2) form a precision forging profile model of the high-pressure common rail pipe; two ends of the second pre-forging cavity (2-1) are provided with material blocking blocks (2-3), and two ends of the first pre-forging cavity (1-1) are provided with material blocking grooves (1-3); a plurality of second guide pillars (2-4) are arranged on the forging lower die (2), and the second guide pillars (2-4) are in interference fit with the forging lower die (2) and are assembled in a hot sleeve mode; a plurality of third guide post holes (1-4) are formed in the forging upper die (1), and the second guide posts (2-4) are in clearance fit with the third guide post holes (1-4) to play a guiding role; and a counter bore (2-5) is arranged below each second guide pillar (2-4) on the forging lower die (2).
2. The forging and forming process of the high-pressure common rail pipe as claimed in claim 1, wherein the forging upper die (1) and the forging lower die (2) are both provided with positioning key slots (3), and the forging upper die (1) and the forging lower die (2) are respectively positioned on respective die frames through the positioning key slots (3).
3. The forging and forming process of the high-pressure common rail pipe according to claim 1, wherein both ends of the upper forging die (1) and the lower forging die (2) are provided with a pressing plate groove (4), and the upper forging die (1) and the lower forging die (2) are fixed on the corresponding die frames through the pressing plate grooves (4).
4. The forging forming process of the high-pressure common rail pipe according to claim 1, wherein the trimming device of the high-pressure common rail pipe used in the trimming step S5 comprises an upper trimming device and a lower trimming device, the upper trimming device comprises an upper template (6-1), a raised head die (6-2) is installed below the upper template (6-1), the lower trimming device comprises a lower template (7-1), and a cavity die (7-2) is installed above the lower template (7-1); the raised head mold (6-2) is fixed below the upper template (6-1) through an upper pressing plate (6-3), and the cavity mold (7-2) is fixed above the lower template (7-1) through a lower pressing plate (7-3); and a cushion block (7-4) is also arranged between the concave cavity die (7-2) and the lower die plate (7-1).
5. The forging and forming process of the high-pressure common rail pipe according to claim 4, wherein a first guide post hole (7-5) is formed in the cavity die (7-2), a first guide post (7-6) is mounted on the first guide post hole (7-5), and the first guide post hole (7-5) and the first guide post (7-6) are assembled in an interference fit mode in a hot sleeve mode; and a second guide post hole (6-4) is formed in the raised head die (6-2), and the second guide post hole (6-4) is in clearance fit with the first guide post (7-6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510496763.4A CN106695249B (en) | 2015-08-13 | 2015-08-13 | Forging forming process of high-pressure common rail pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510496763.4A CN106695249B (en) | 2015-08-13 | 2015-08-13 | Forging forming process of high-pressure common rail pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106695249A CN106695249A (en) | 2017-05-24 |
| CN106695249B true CN106695249B (en) | 2019-12-13 |
Family
ID=58924258
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510496763.4A Active CN106695249B (en) | 2015-08-13 | 2015-08-13 | Forging forming process of high-pressure common rail pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106695249B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108406315A (en) * | 2018-04-27 | 2018-08-17 | 上海众源燃油分配器制造有限公司 | A kind of gasoline high pressure oil rail forging system and technique |
| EP3587788B1 (en) * | 2018-06-25 | 2021-05-19 | Delphi Technologies IP Limited | Method for manufacturing a common rail |
| CN109014011A (en) * | 2018-07-11 | 2018-12-18 | 常州市丰乐精锻有限公司 | The forging technology of automobile engine oil supply system common rail pipe |
| CN108580779B (en) * | 2018-07-27 | 2024-03-26 | 天津天海精密锻造有限公司 | Open die forging mould |
| CN210141180U (en) * | 2018-12-11 | 2020-03-13 | 上海威克迈龙川汽车发动机零件有限公司 | High-pressure oil rail assembly of engine |
| CN110340266A (en) * | 2019-08-16 | 2019-10-18 | 杭州万鼎实业有限公司 | Automobile hub bearing open and close type combination apical ring structure forging method |
| CN115121750A (en) * | 2022-06-08 | 2022-09-30 | 中机精密成形产业技术研究院（安徽）股份有限公司 | Precision forming method of cylinder head forging and pretreatment equipment of forging cavity |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0266269A1 (en) * | 1986-10-31 | 1988-05-04 | G.De Bruyn Ozoir S.A. | Process for manufacturing a fuel distribution pipe |
| CN101444884A (en) * | 2008-12-18 | 2009-06-03 | 浙江跃进机械有限公司 | Machining process of engine connecting rod |
| CN202984568U (en) * | 2012-12-05 | 2013-06-12 | 宜都市仝鑫精密锻造有限公司 | Ejection mechanism for modules of press machine |
| CN103357805A (en) * | 2013-06-30 | 2013-10-23 | 贵州安大航空锻造有限责任公司 | Method for forging formation of pin track |
| CN103447780A (en) * | 2013-08-30 | 2013-12-18 | 上海交大中京锻压有限公司 | Semi-closed type tripod flange blank ejection technique |
| CN104174803A (en) * | 2014-09-02 | 2014-12-03 | 山东金马工业集团股份有限公司 | High-pressure common rail pre-forging die |
| CN104438553A (en) * | 2014-10-10 | 2015-03-25 | 宁波环亚机械制造有限公司 | Trimming die for long pipe die casting |
-
2015
- 2015-08-13 CN CN201510496763.4A patent/CN106695249B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0266269A1 (en) * | 1986-10-31 | 1988-05-04 | G.De Bruyn Ozoir S.A. | Process for manufacturing a fuel distribution pipe |
| CN101444884A (en) * | 2008-12-18 | 2009-06-03 | 浙江跃进机械有限公司 | Machining process of engine connecting rod |
| CN202984568U (en) * | 2012-12-05 | 2013-06-12 | 宜都市仝鑫精密锻造有限公司 | Ejection mechanism for modules of press machine |
| CN103357805A (en) * | 2013-06-30 | 2013-10-23 | 贵州安大航空锻造有限责任公司 | Method for forging formation of pin track |
| CN103447780A (en) * | 2013-08-30 | 2013-12-18 | 上海交大中京锻压有限公司 | Semi-closed type tripod flange blank ejection technique |
| CN104174803A (en) * | 2014-09-02 | 2014-12-03 | 山东金马工业集团股份有限公司 | High-pressure common rail pre-forging die |
| CN104438553A (en) * | 2014-10-10 | 2015-03-25 | 宁波环亚机械制造有限公司 | Trimming die for long pipe die casting |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106695249A (en) | 2017-05-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106695249B (en) | Forging forming process of high-pressure common rail pipe | |
| CN102240691A (en) | Accurate extrusion mould and method of light alloy stepped workpiece | |
| CN102699094A (en) | Die used in extrusion moulding of high-precision complex copper alloy thrust bearing seat | |
| CN108582664A (en) | A kind of automatic novel electromagnetic mold | |
| CN103447443A (en) | Single-tooth track plate semi-open and semi-closed blanking mold and single-tooth track plate forging method | |
| CN203044666U (en) | Combined type forming die of super-strength steel plate car door anti-collision beam | |
| CN110695286A (en) | High manganese steel frog insert double-station die forging forming die and forming method | |
| CN112222342B (en) | Hot extrusion forming device and process for steel diesel engine piston | |
| CN109108194A (en) | The heavy novel forging technology of slip shaft yoke | |
| CN204735704U (en) | A die mould for processing cross wheel cap | |
| CN112705675A (en) | Technological method for space curved surface plate type investment casting | |
| CN110385374B (en) | Hot stamping die | |
| CN204396805U (en) | A kind of cast ball line multistation penetrates sand machine | |
| CN206241171U (en) | Horizontal forging and upsetting machine universal-joint fork mould | |
| CN211248140U (en) | High manganese steel frog inserts double-station die forging forming die | |
| CN205668027U (en) | A kind of steel plate multi-functional bending die of U-shaped part | |
| CN104815908A (en) | Water cooling mold for high-strength steel plate stamping part thermal forming | |
| CN212168881U (en) | Cooling device for bearing forging processing die | |
| CN100571925C (en) | A kind of adding at the metal stock heat temperature forging, reduce the method that the warm forging oxide scale film generates man-hour | |
| CN204321151U (en) | A kind of aluminium castings production vertical punching device | |
| CN208555843U (en) | A kind of forge die of piston of air-conditioning compressor | |
| CN203390061U (en) | Low-melting-point alloy mold applicable to punching | |
| CN208116566U (en) | A kind of harvester sprocket wheel mold | |
| CN106238733B (en) | A kind of preparation method of three projective table type timing sprocket of automobile engine | |
| CN212525701U (en) | Air cooling device for progressive die tightening ring of motor iron core |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 213164 No.26 Longyu West Road, Wujin high tech Zone, Changzhou City, Jiangsu Province Patentee after: Jiangsu Longcheng Precision Forging Group Co.,Ltd. Address before: 213164 No.26 Longyu West Road, Wujin high tech Zone, Changzhou City, Jiangsu Province Patentee before: JIANGSU LONGCHENG PRECISION FORGING Co.,Ltd. |