CN102248367A - Production method and production device for connecting rod - Google Patents
Production method and production device for connecting rod Download PDFInfo
- Publication number
- CN102248367A CN102248367A CN2011101520781A CN201110152078A CN102248367A CN 102248367 A CN102248367 A CN 102248367A CN 2011101520781 A CN2011101520781 A CN 2011101520781A CN 201110152078 A CN201110152078 A CN 201110152078A CN 102248367 A CN102248367 A CN 102248367A
- Authority
- CN
- China
- Prior art keywords
- connecting rod
- forging
- mould
- machine base
- production method
- 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
Images
Landscapes
- Forging (AREA)
Abstract
The invention relates to a production method and a production device for a connecting rod. The production method comprises the following processes of: 1, heating the end part of a blank piece of the connecting rod to a required forging and pressing temperature; 2, forming the blank piece of the connecting rod by a forging and pressing method, namely forming two lateral surfaces and top end of the end part; 3, forging the end part of the blank piece of the connecting rod to form a pier so as to meet the size requirement of the thickness between the two lateral surfaces and the end face of the top of the connecting rod by the forging and pressing method; 4, forging and pressing a hole in the end part of the blank piece of the connecting rod to meet the requirement on the bore diameter of the connecting rod by the forging and pressing method; and 5, reshaping the outer outline of the connecting rod by a stamping method. Therefore by the method, the connecting rod can be produced continuously, and the production efficiency is improved.
Description
One, technical field
The present invention relates to a kind of production method and process units that is used for connecting rod, especially a kind of adaptation is used for the production method and the process units of the connecting rod of heavy caliber and big length.
Two, background technology
In multinomial fields such as engineering machinery, hydraulic prop, connecting rod connection, use connecting rod widely, in mechanical field, being in great demand of connecting rod, therefore be used for the production method of connecting rod and the important link that process units is field of machining, at existing production method and the process units that is used for connecting rod, the mode of production to small-bore connecting rod, the vertical board drop hammers that adopt forge technology more, promptly vertically be positioned in the shaping dies workpiece after the local heat, use the board drop hammer formed by forging, Workpiece length is limited, the workpiece bore is limited; To the heavy caliber connecting rod, then adopt model forging and pressing mode to forge out the connecting rod top, and then be connected as a single entity with gonnecting rod body weldering, the coaxial accuracy of top, welding back, the body of rod is not high, the intensity of monolithic linkage also is affected, no matter to small-bore and bigbore connecting rod, still substep, processing in batch now, realization is not produced continuously and is shaped.
Three, summary of the invention
In order to overcome above-mentioned technical disadvantages, the purpose of this invention is to provide a kind of production method and process units that is used for connecting rod, therefore realized the successional production of connecting rod, improved production efficiency.
For achieving the above object, the technical scheme that the present invention takes is: the production method that is used for connecting rod, the steps include: in operation I, the end of connecting rod blank spare to be heated, reach the temperature requirement of forging and pressing, arrive operation II, in operation II, use the method for forging and pressing, connecting rod blank spare is configured as: the two sides of end are shaped, the top of end is shaped, arrive operation III, in operation III, use the method for forging and pressing, honest to the forging of the end of connecting rod blank spare, reach the thickness between the two sides of connecting rod and the dimensional requirement of top end face, arrive operation IV, in operation IV, use the method for forging and pressing, hole excellent suitability for press forming to the end of connecting rod blank spare, arrive the aperture requirement of connecting rod, arrive operation V, in operation V, use the method for punching press, the outline of connecting rod is carried out shaping.
Owing to designed the method for forging and pressing and the method for punching press, directly use mould that connecting rod is shaped, do not re-use welding method, make connecting rod blank spare can carry out continuous turnover, therefore realized the successional production of connecting rod, improved production efficiency.
The process units that is used for connecting rod, be set to include heating furnace, forging press I, pneumatic hammer, forging press II, decompressor and turnover device, forging press I is set to the two sides shaping that connecting rod blank spare is shaped and is the end, the device that the top of end is shaped, pneumatic hammer is set to the forging of the end of connecting rod blank spare honest, reach the device of the dimensional requirement of thickness between the two sides of connecting rod and top end face, forging press II is set to the hole excellent suitability for press forming to the end of connecting rod blank spare, arrive the device of the aperture requirement of connecting rod, decompressor is set to the outline of connecting rod is carried out the device of shaping, according to heating furnace, forging press I, pneumatic hammer, the order of forging press II and decompressor sets gradually is in the same place, and the turnover device is arranged on heating furnace, forging press I, pneumatic hammer, between forging press II and the decompressor.
Connecting rod blank spare has enough to meet the need between each operation in the turnover device, successively arrives each operation, carries out connecting rod and is shaped.
The present invention has designed, and the turnover device is set to have enough to meet the need support, is provided with heating furnace at the front end that has enough to meet the need support, and forging press I, pneumatic hammer, forging press II and decompressor are separately positioned on the side of turnover support successively, and the turnover support is provided with rolling roller.
The present invention has designed, forging press I includes machine base, vertical push action cylinder, mould I, lateral thrust oil cylinder and mould II, end in machine base is provided with vertical push action cylinder, vertical push action cylinder is set to be fixedly connected with machine base, flexible end at vertical push action cylinder is provided with the mould I that is fixedly connected with it, side at vertical push action cylinder is provided with the lateral thrust oil cylinder, flexible end at the lateral thrust oil cylinder is provided with the mould II that is fixedly connected with it, the lateral thrust oil cylinder is set to two and be separately positioned on the both sides of the center line of machine base, and the center line of mould I and mould II is set to coincide with the horizontal center line of machine base.
Component shaping end heating burn red after, be put among the mould II, the afterbody of workpiece is connected with tailstock, start the lateral thrust oil cylinder, mould II is shaped the longitudinal surface of workpiece is the plane, restart vertical push action cylinder, drive mould I, the athwartship plane of the front end of workpiece is shaped promptly forges into circular arc, behind Workpiece shaping, start the lateral thrust oil cylinder, mould II is unclamped, workpiece is taken out, because having designed the center line of vertical push action cylinder and mould II is set to coincide with the horizontal center line of machine base, the weight of mould I is no longer acted on the workpiece, and the thrust that is vertical push action cylinder is on workpiece, so the component shaping quality is good.
The present invention has designed, and mould II is set to symmetrical two parts, and wherein left part is set to connect with the lateral thrust oil cylinder in left side, the right side branch is set to connects with the lateral thrust oil cylinder on right side.
The present invention has designed, and also includes tailstock, is provided with tailstock at the other end with the corresponding machine base of vertical push action cylinder, and tailstock is set to connect with the machine base slidingtype.To prevent vertical push action cylinder to promote mould I connecting rod is pushed when initial, the longitudinal leap of connecting rod, the tailstock machine base is provided with diverse location, is suitable for the Machining of Connecting Rod of different length.
The present invention has designed, and also includes the location diagonal brace, and the location diagonal brace is set to connect with mould II contact, is provided with the location diagonal brace in the side of mould II, and the location diagonal brace is set to connect with machine base by screw thread.Mainly be to prevent or resist cross shear and the unnecessary horizontal looseness that vertical push action cylinder promotes to give when mould I pushes connecting rod lateral thrust oil cylinder, mould II generation.
Four, description of drawings
Fig. 1 is a schematic diagram of the present invention:
Fig. 2 is the structural representation of forging press I.
Five, the specific embodiment
Accompanying drawing is one embodiment of the present of invention, specify present embodiment in conjunction with the accompanying drawings, the production method that is used for connecting rod, the steps include: in operation I, use heating furnace that the end of connecting rod blank spare is heated, reach the temperature requirement of forging and pressing, arrive operation II, in operation II, use forging press I the shaping plane, two sides of the end of blank, the top shaping arc surface of end arrives operation III, in operation III, use pneumatic hammer to forge honest to the plane of the end of blank, reach thickness and arc surface dimensional requirement between the plane of connecting rod, arrive operation IV, in operation IV, use forging press II the hole excellent suitability for press forming on the connecting rod, arrive the aperture requirement of connecting rod, arrive operation V, in operation V, use decompressor, the outline of connecting rod is carried out shaping.
During transhipment between operation, connecting rod blank spare is arranged on the turnover support, and the turnover support is provided with rolling roller, and the turnover support is arranged between heating furnace, forging press I, pneumatic hammer, forging press II and the decompressor.
The heating in medium frequency furnaceman skill that is provided with of the present invention.Its objective is that the porous heating furnace of taking go-no-go carries out local heat to the connecting rod bar, firing rate is fast, the saving energy.The horizontal digital-control horizontal forging and upsetting machine bed process that is provided with of the present invention.Its objective is and make that the heating connecting rod is realized being fixedly clamped, the mold pressing extrusion molding.The pneumatic hammer operation that is provided with of the present invention.Its objective is the connecting rod blank of extrusion modling is punched, be convenient to the location and the reaming of operation subsequently.The forging equipment that is provided with of the present invention.Its objective is at the pier of forging equipment and depress that connecting rod is through pressing hole, mold pressing setting, make the aperture be extended to press machine punching bore, the mold pressing appearance profile meets connecting rod appearance and size.Technology of the present invention is provided with the press machine operation at last.Its objective is die formed parts is carried out the punching cycle one time, finish final punching and cut overlap.
The process units that is used for connecting rod, be set to include heating furnace 1, forging press I2, pneumatic hammer 3, forging press II4, decompressor 5 and turnover support 6, front end at turnover support 6 is provided with heating furnace 1, forging press I2, pneumatic hammer 3, forging press II4 and decompressor 5 are separately positioned on the side of turnover support 6 successively, turnover support 6 is provided with rolling roller 61, forging press I2 is set to the two sides shaping that connecting rod blank spare is shaped and is the end, the device that the top of end is shaped, pneumatic hammer 3 is set to the forging of the end of connecting rod blank spare honest, reach the device of the dimensional requirement of thickness between the two sides of connecting rod and top end face, forging press II4 is set to the hole excellent suitability for press forming to the end of connecting rod blank spare, arrive the device of the aperture requirement of connecting rod, decompressor 5 is set to the outline of connecting rod is carried out the device of shaping.
Connecting rod blank spare by rolling roller 61, has enough to meet the need between each operation on turnover support 6, successively arrives each operation, carries out connecting rod and is shaped.
In the present embodiment, forging press I2 is set to include machine base 11, vertical push action cylinder 12, mould I13, lateral thrust oil cylinder 14, mould II15, tailstock 16 and location diagonal brace 17, end in machine base 11 is provided with vertical push action cylinder 12, the other end in machine base 11 is provided with tailstock 16, vertical push action cylinder 12 is set to be fixedly connected with machine base 11, tailstock 16 is set to connect with machine base 11 slidingtypes, flexible end at vertical push action cylinder 12 is provided with the mould I13 that is fixedly connected with it, between vertical push action cylinder 12 and tailstock 16, be provided with lateral thrust oil cylinder 14, flexible end at lateral thrust oil cylinder 14 is provided with the mould II15 that is fixedly connected with it, be provided with location diagonal brace 17 in the side of mould II15, location diagonal brace 17 is set to connect with mould II15 contact, location diagonal brace 17 is set to connect with machine base 11 by screw thread, lateral thrust oil cylinder 14 is set to two and be separately positioned on the both sides of the center line of machine base 11, and the center line of mould I13 and mould II15 is set to coincide with the horizontal center line of machine base 11.
In the present embodiment, mould II15 is set to symmetrical two parts, and wherein left part is set to connect with the lateral thrust oil cylinder 14 in left side, the right side branch is set to connects with the lateral thrust oil cylinder 14 on right side.
Component shaping end heating burn red after, be put among the mould II15, the afterbody of workpiece is connected with tailstock 16, start lateral thrust oil cylinder 14, mould II15 is shaped the longitudinal surface of workpiece is the plane, restart vertical push action cylinder 12, drive mould I13, the athwartship plane of the front end of workpiece is shaped promptly forges into circular arc, behind Workpiece shaping, start lateral thrust oil cylinder 14, mould II15 is unclamped, workpiece is taken out.
The connecting rod that the heating in medium frequency stove is set mainly is go-no-go carries out local heat; It mainly is that connecting rod carries out horizontal local mold pressing clamping, pier forges the connecting rod blank, can solve the difficult problem that general production process connecting rod bore is limited, length of connecting rod is limited fully to heating that horizontal digital-control horizontal forging and upsetting machine bed is set; It mainly is that connecting rod blank part is carried out the flat punching of pier that pneumatic hammer is set, for subsequently manufacturing procedure forges datum mark and plays the purpose that makes things convenient for reaming; It mainly is that the Machining of Connecting Rod end is implemented reaming and die forming that the forging equipment operation is set; In that press machine is set on the final operation mainly is to carry out shaping punching press, punching overlap on to the connecting rod manufacturing terminal that has been shaped and towards through hole; With the connecting rod of this explained hereafter, forming quality is good, shape is unified, standard, has solved the general difficult problem that Machining of Connecting Rod shaping difficulty is big, bore is limited, the handle pole length is limited.
The present invention has following characteristics:
1, owing to designed the method for forging and pressing and the method for punching press, directly uses mould that connecting rod is shaped, do not re-use welding method, make connecting rod blank spare can carry out continuous turnover, therefore realized the successional production of connecting rod, improved production efficiency.
2, be provided with the heating in medium frequency eaf process in this patent, can select the porous heating furnace of certain heating gate that the connecting rod bar is carried out local heat according to the connecting rod bore, but make connecting rod bar temperature reach predefined die forging temperature.
3, be provided with horizontal digital-control horizontal forging and upsetting machine bed process in this patent.Horizontal digital-control horizontal forging and upsetting machine bed includes machine base, forging and pressing horizontal sliding system, shaping dies, clamping cylinder and clamping mold, end in machine base is provided with forging and pressing horizontal sliding system, forging and pressing horizontal sliding system is set to be fixedly connected with machine base, flexible end in forging and pressing horizontal sliding system is provided with the shaping dies that is fixedly connected with it, side in forging and pressing horizontal sliding system is provided with clamping cylinder, flexible end at clamping cylinder is provided with the clamping mold that is fixedly connected with it, clamping cylinder is set to two and be separately positioned on the both sides of the center line of machine base, and the center line of forging and pressing horizontal sliding system and clamping mold is set to coincide with the horizontal center line of machine base.
4, be provided with pneumatic hammer technology in this patent.Be the connecting rod blank of horizontal digital-control horizontal forging and upsetting machine bed extrusion molding to be carried out pier forge processing, for the reaming of next procedure provides location and reaming facility.
5, be provided with forging equipment technology in this patent.Punching press reaming by forging equipment and die cavity pier are pressed, and make the connecting rod aperture be extended to the required bore of press machine punching, the mold pressing appearance profile meets connecting rod appearance and size.
6, the finishing operation in Machining of Connecting Rod is provided with press machine technology.Mainly be the punching cycle of on forging equipment, realizing connecting rod, finish the final punching of connecting rod and cut overlap.
In production method that is used for connecting rod and process units technical field; Every production method that is used for connecting rod that includes; in operation I; heat end to connecting rod blank spare; reach the temperature requirement of forging and pressing, arrive operation II, in operation II; use the method for forging and pressing; connecting rod blank spare is configured as: the two sides of end are shaped; the top of end is shaped, and arrives operation III, in operation III; use the method for forging and pressing; forging to the end of connecting rod blank spare is honest, reaches the thickness between the two sides of connecting rod and the dimensional requirement of top end face, arrives operation IV; in operation IV; use the method for forging and pressing, the hole excellent suitability for press forming to the end of connecting rod blank spare arrives the aperture requirement of connecting rod; arrive operation V; in operation V, use the method for punching press, the outline of connecting rod is carried out the technology contents of shaping all in protection scope of the present invention.
Claims (8)
1. a production method and process units that is used for connecting rod; It is characterized in that: the production method that is used for connecting rod, the steps include: in operation I, heat end to connecting rod blank spare, reach the temperature requirement of forging and pressing, arrive operation II, in operation II, use the method for forging and pressing, connecting rod blank spare is configured as: the two sides of end are shaped, the top of end is shaped, and arrives operation III, in operation III, use the method for forging and pressing, forging to the end of connecting rod blank spare is honest, reaches the thickness between the two sides of connecting rod and the dimensional requirement of top end face, arrives operation IV, in operation IV, use the method for forging and pressing, the hole excellent suitability for press forming to the end of connecting rod blank spare arrives the aperture requirement of connecting rod, arrive operation V, in operation V, use the method for punching press, the outline of connecting rod is carried out shaping.
2. production method and the process units that is used for connecting rod according to claim 1; It is characterized in that: the process units that is used for connecting rod, be set to include heating furnace (1), forging press I (2), pneumatic hammer (3), forging press II (4), decompressor (5) and turnover device, forging press I (2) is set to the two sides shaping that connecting rod blank spare is shaped and is the end, the device that the top of end is shaped, pneumatic hammer (3) is set to the forging of the end of connecting rod blank spare honest, reach the device of the dimensional requirement of thickness between the two sides of connecting rod and top end face, forging press II (4) is set to the hole excellent suitability for press forming to the end of connecting rod blank spare, arrive the device of the aperture requirement of connecting rod, decompressor (5) is set to the outline of connecting rod is carried out the device of shaping, according to heating furnace, (1) forging press I (2), pneumatic hammer (3), the order of forging press II (4) and decompressor (5) sets gradually together, and the turnover device is arranged on heating furnace (1), forging press I (2), pneumatic hammer (3), between forging press II (4) and the decompressor (5).
3. production method and the process units that is used for connecting rod according to claim 2; It is characterized in that: the turnover device is set to have enough to meet the need support (6), front end at turnover support (6) is provided with heating furnace (1), forging press I (2), pneumatic hammer (3), forging press II (4) and decompressor (5) are separately positioned on the side of turnover support 6 () successively, and turnover support (6) is provided with rolling roller (61).
4. according to claim 2 or 3 described production method and the process units that are used for connecting rod; It is characterized in that: forging press I (2) includes machine base (11), vertical push action cylinder (12), mould I (13), lateral thrust oil cylinder (14) and mould II (15), end in machine base (11) is provided with vertical push action cylinder (12), vertical push action cylinder (12) is set to be fixedly connected with machine base (11), flexible end at vertical push action cylinder (12) is provided with the mould I (13) that is fixedly connected with it, side at vertical push action cylinder (12) is provided with lateral thrust oil cylinder (14), flexible end at lateral thrust oil cylinder (14) is provided with the mould II (15) that is fixedly connected with it, lateral thrust oil cylinder (14) is set to two and be separately positioned on the both sides of the center line of machine base (11), and the center line of mould I (13) and mould II (15) is set to coincide with the horizontal center line of machine base (11).
5. production method and the process units that is used for connecting rod according to claim 4; It is characterized in that: mould II (15) is set to symmetrical two parts, and wherein left part is set to connect with the lateral thrust oil cylinder (14) in left side, the right side branch is set to connects with the lateral thrust oil cylinder on right side (14).
6. production method and the process units that is used for connecting rod according to claim 4; It is characterized in that: also include tailstock (16), be provided with tailstock (16) at the other end with the corresponding machine base of vertical push action cylinder (12) (11), tailstock (16) is set to connect with machine base (11) slidingtype.
7. production method and the process units that is used for connecting rod according to claim 6; It is characterized in that: also include location diagonal brace (17), location diagonal brace (17) is set to connect with mould II (15) contact, be provided with location diagonal brace (17) in the side of mould II (15), location diagonal brace (17) is set to connect with machine base (11) by screw thread.
8. production method and the process units that is used for connecting rod according to claim 4; It is characterized in that: also include location diagonal brace (17), location diagonal brace (17) is set to connect with mould II (15) contact, be provided with location diagonal brace (17) in the side of mould II (15), location diagonal brace (17) is set to connect with machine base (11) by screw thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101520781A CN102248367A (en) | 2011-05-29 | 2011-05-29 | Production method and production device for connecting rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101520781A CN102248367A (en) | 2011-05-29 | 2011-05-29 | Production method and production device for connecting rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102248367A true CN102248367A (en) | 2011-11-23 |
Family
ID=44976125
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101520781A Pending CN102248367A (en) | 2011-05-29 | 2011-05-29 | Production method and production device for connecting rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102248367A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103495871A (en) * | 2013-10-21 | 2014-01-08 | 如皋市同泰电力器材有限公司 | Ball socket fine tool and machining technology thereof |
| CN106736290A (en) * | 2016-12-26 | 2017-05-31 | 重庆创精温锻成型有限公司 | The preparation method of automobile DCT automatic transmission clutch propeller boss |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6312324B1 (en) * | 1996-09-30 | 2001-11-06 | Osaka Diamond Industrial Co. | Superabrasive tool and method of manufacturing the same |
| CN1745934A (en) * | 2005-10-13 | 2006-03-15 | 上海交通大学 | Six-dimensional parallel forging press |
| CN101181731A (en) * | 2007-12-20 | 2008-05-21 | 江苏省徐州锻压机床厂集团有限公司 | Free-standing die-filling height regulating mechanism |
| CN101444884A (en) * | 2008-12-18 | 2009-06-03 | 浙江跃进机械有限公司 | Machining process of engine connecting rod |
| CN202264067U (en) * | 2011-05-29 | 2012-06-06 | 杜广智 | Production device for connecting rod |
-
2011
- 2011-05-29 CN CN2011101520781A patent/CN102248367A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6312324B1 (en) * | 1996-09-30 | 2001-11-06 | Osaka Diamond Industrial Co. | Superabrasive tool and method of manufacturing the same |
| CN1745934A (en) * | 2005-10-13 | 2006-03-15 | 上海交通大学 | Six-dimensional parallel forging press |
| CN101181731A (en) * | 2007-12-20 | 2008-05-21 | 江苏省徐州锻压机床厂集团有限公司 | Free-standing die-filling height regulating mechanism |
| CN101444884A (en) * | 2008-12-18 | 2009-06-03 | 浙江跃进机械有限公司 | Machining process of engine connecting rod |
| CN202264067U (en) * | 2011-05-29 | 2012-06-06 | 杜广智 | Production device for connecting rod |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103495871A (en) * | 2013-10-21 | 2014-01-08 | 如皋市同泰电力器材有限公司 | Ball socket fine tool and machining technology thereof |
| CN106736290A (en) * | 2016-12-26 | 2017-05-31 | 重庆创精温锻成型有限公司 | The preparation method of automobile DCT automatic transmission clutch propeller boss |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100469486C (en) | Rolling preparation method for thick-walled and thin-bottomed basin parts | |
| CN104139279B (en) | The manufacturing process of interior trapezoidal grooved ring shape part | |
| CN111531097B (en) | Forging method for eliminating wall thickness unevenness defect of cylinder type forging | |
| CN103121075B (en) | Hot forging method for transmission shaft yoke with horizontal yoke part | |
| CN102284670A (en) | Heavy truck balance shaft forging method | |
| CN104785563A (en) | Precise extruding and forming method for long barrel-shaped component with base | |
| CN111745101B (en) | Cake forging rounding forming forging method | |
| CN104139280A (en) | Manufacturing process for wheel hubs | |
| CN104815936A (en) | Forge forming method and special mold for fork type pieces such as high reinforcing bars and thin web plates | |
| CN103230955A (en) | Hot extrusion forming die of light alloy horn-shaped pipe fitting | |
| CN104384427A (en) | Method for forming precision forge piece of wind power generation spindle | |
| CN202264067U (en) | Production device for connecting rod | |
| CN102179464B (en) | Process for forming generator claw pole of vehicle | |
| CN101961765B (en) | Manufacturing process and equipment for upset forging of flanges | |
| CN113414330B (en) | Forging process for completing through hole of support shaft by one-step extrusion | |
| CN112139417B (en) | Forging forming method of super-large deep blind hole shell | |
| CN101596572B (en) | Technological method for producing axle case reinforcing ring | |
| CN102248367A (en) | Production method and production device for connecting rod | |
| CN104625626A (en) | Spanner tool manufacturing method | |
| CN103230951A (en) | Hot extrusion forming method of light alloy horn-shaped pipe fitting | |
| CN105964846A (en) | Hollow convex tooth type forging and molding method thereof | |
| CN108620519B (en) | A kind of high-alloy steel ultra-wide slab six sides forging operating method | |
| CN102581568A (en) | Processing method of big cylinder bottom of hydraulic support | |
| CN113770290B (en) | Forging method of large-specification high-utilization red copper thin-wall hollow tube | |
| CN102974728B (en) | Method for carrying out calendaring molding on GH202 high-temperature alloy sheet |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20111123 |