CN101116891A - Fabrication technology of big flange stub axle type components - Google Patents
Fabrication technology of big flange stub axle type components Download PDFInfo
- Publication number
- CN101116891A CN101116891A CNA2007100595746A CN200710059574A CN101116891A CN 101116891 A CN101116891 A CN 101116891A CN A2007100595746 A CNA2007100595746 A CN A2007100595746A CN 200710059574 A CN200710059574 A CN 200710059574A CN 101116891 A CN101116891 A CN 101116891A
- Authority
- CN
- China
- Prior art keywords
- forging
- axle type
- stub axle
- type components
- fabrication technology
- 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 processing technique for large flange short-axle type parts. The invention is characterized in that: the processing technique comprises the processing procedures of refining, forging, heat treating, detecting, and machining. The forging processing procedure is that: firstly a preformed stock is forged by free forging on a large-size hydraulic machine, and secondly, the preformed stock is placed in the die to be vertically upset forged into a die-forging part the dimension of which is approximate to that of a finish product. The invention overcomes the drawbacks that the large water press can only freely form by large-size forging piece, and can save raw materials and shorten cold processing time. The invention has the most advantage that the processing technique improves forging ability of the large flange arranged at the end of large flange short-axle parts.
Description
Technical field
The present invention relates to the manufacturing of Large-scale Wind Turbines main shaft, particularly a kind of fabrication technology of big flange stub axle type components.
Background technology
The manufacturing of Large-scale Wind Turbines main shaft at present is with regard to its Forging Technology, and blower fan axle manufacturer generally adopts traditional free forging process both at home and abroad.And the present invention, main processes is: heating → bar hold, chamfered edge, water dividing gap → jumping-up, pulling compacting → blanking → prefabricated blank → upsetting go out flange and are formed into forging ' s block dimension → demoulding.Original free forging process be by jumping-up by depressing program, pulling each section size that is shaped then, but the flange end is to reach forging ratio in forming process, internal flaw can't be forged and be closed like this, and is second-rate, can't reach specification requirement.And traditional free forging process forging surplus is big, and forging is heavier, correspondingly selects steel ingot also bigger, and cold working is many man-hour, and the manufacturing cycle is long.
Summary of the invention
The present invention provides a kind of flange end that can make to reach forging ratio and the little fabrication technology of big flange stub axle type components of forging surplus for solving the technical problem that exists in the known technology.
The technical scheme that the present invention takes for the technical problem that exists in the solution known technology is: a kind of fabrication technology of big flange stub axle type components, comprise smelting, forging, heat treatment, detection, machining processes, described forging process is at first to forge prefabricated blank by open die forging on large-scale hydraulic press, again prefabricated blank is placed on vertical upsetting in the mould and goes out forging part near finished size.
The present invention can also adopt following technical scheme:
Described prefabricated blank cutting stock weight is to be full of the required cutting stock weight of mold cavity to add fire consumption weight and thermal expansion weight.
Described mould be comprise at least three successively the interlocking monoblock types insert outward; Every install in inserting outward half assembling of two branches in insert, in outer conical surface of inserting and adaptive the joining of internal conical surface of inserting outward, in the both ends of the surface of inserting equal with the both ends of the surface of inserting outward respectively, insert in two and circumferentially join; The inner chamber of inserting in all forms the die cavity of mould.
Outer the inserting of described mould is three.
The described outer material of inserting is ZG35, in insert and be ZG5CrMnMo.
The present invention's prefabricated blank before upsetting is shaped will be carried out leveling of oxide skin.
Advantage and good effect that the present invention has are: the present invention is because employing at first forges prefabricated blank by open die forging on large-scale hydraulic press, again prefabricated blank is placed on vertical upsetting in the mould and goes out method near the forging part of finished size, it is a breakthrough that can only realize the heavy forging open die forging to large-scale hydraulic press, can save raw material, shorten cold working man-hour; Great advantage is to improve the saturating property of forging of the big flange of big flange stub axle type components shaft end.
Description of drawings
Fig. 1 is the structural representation of mould that the present invention adopts.
The specific embodiment
For further understanding summary of the invention of the present invention, characteristics and effect, exemplify following examples now, be described in detail as follows:
Fabrication technology of big flange stub axle type components of the present invention comprises following operation: the mechanical energy check is done in smelting → refining → vacuum pouring → forging → forging back first heat treatment → detection (pre-test) → roughing → ultrasonic examination → property heat treatment → sampling, ultrasonic examination → semifinishing → eliminate stress → fine finishining survives.
The main processes of forging of the present invention is as follows: heating → chamfered edge, water dividing gap → jumping-up, pulling compacting → blanking → prefabricated blank → die-forging forming, at first on large-scale hydraulic press, forge prefabricated blank, again prefabricated blank is placed on vertical upsetting in the mould and goes out forging part near finished size by open die forging; The flange end is to forming dimension through the blank jumping-up, forging ratio can be satisfied in the flange end, improved the saturating property of forging of the big flange in big flange stub axle type components end, improve the institutional framework of metal, make the cast sturcture in its interior tissue and loosen to obtain good compacting, can be crushed to thick crystal grain tiny crystal grain, and form fibr tissue, improve the flange internal flaw, improved the flange internal soundness.When fibr tissue when the flange profile rationally distributes, can improve the plasticity and the impact flexibility of part, improve and can bear higher impact force thereby make it intensity, satisfy its technical indicator.
It is little that the present invention forges surplus, saved cold working man-hour, and the manufacturing cycle is short.With 2 megawatt blower fan main shafts is example, and when adopting free forging process, the heavy 13.85t of forging selects steel ingot 22t for use; When adopting contour forging technique, the heavy 11.91t of forging selects steel ingot 19t for use.Every blower fan main shaft is saved steel ingot 3t, and forging heavily reduces 1.94t; 2 megawatt blower fan main shafts adopt free forging process to need 5 pyrogene types; And adopt contour forging technique to need 4 fire just plastic; Thereby reduce by a fire.Compare with domestic other producer, tool has great advantage.The saving cost analysis is as follows: save steel ingot 3t, 40,000 yuan; Save a fire, 0.9 ten thousand yuan; Save cold working man-hour, 0.8 ten thousand yuan; Save 2 days manufacturing cycles.Mould consumes, and to press 1000 calculating die life, increases by 0.12 ten thousand yuan of cost.Single-piece is saved 5.58 ten thousand yuan of costs.Implementing the die forging of MW class blower fan axle on large-scale hydraulic press, is a breakthrough that can only realize the heavy forging open die forging to large-scale hydraulic press.
Determining of forging temperature of the present invention:
With 2 megawatt blower fan main shafts is example, blower fan axial wood matter: 34CrNiMo6.Forging range is controlled at 800～1200 ℃.
The present invention is for the control of the prefabricated blank blanking degree of accuracy:
Adopt anti-pushing manipulation: calculating at first that to be full of the required blanking of mold cavity heavy, and then add the fire consumption and 1.5% thermal expansion amount of a fire 2%, is that the blanking of prefabricated blank is heavy thereby calculate weight.And then go out prefabricated blank by the shaped design of mold cavity.The suitable degree slightly of prefabricated blank and mold cavity can guarantee that prefabricated blank is full of in mold cavity accurately.For example: 2 megawatt blower fan axles are flanged (FLGD) multidiameters, so prefabricated blank is swaged into multidiameter near mold shape by large-scale hydraulic press, but step portion will have very big knuckle, and purpose is that the stress that reduces in the upsetting process is concentrated, and prevents that the part metals accumulation from producing folding and pipe.
The present invention is for the prefabricated blank rear oxidation skin processing method of coming out of the stove:
Because all forging parts are before putting into the finish-forging die forming, the surface of prefabricated blank must smoothly not have oxide skin, otherwise the surface quality of forging part is impacted.
The employing method: on large-scale hydraulic press with flat anvil up and down, to preform roll extrusion one time gently, reach the purpose of scale removal; Put into mould then immediately and carry out the upsetting shaping.
The mould that the present invention adopts:
See also Fig. 1, the mould that the present invention adopts is for assembling the formula of inserting, promptly outer inserting is three monoblock types, be respectively the outer I1 that inserts, insert II2, the III3 that inserts outward outward, III8,9 inserts in half assembling of two branches of the interior installation of the III3 that inserts outward, in the III8,9 that inserts be respectively two hollow semicircle cones, in insert III8,9 outer conical surface have adaptive joining of inner conical surface of constant slope and the III3 that inserts outward, in insert III8,9 both ends of the surface equal with the both ends of the surface of the III3 that inserts outward respectively, in the III8,9 that inserts circumferentially join; According to being installed in outer same way as of inserting in 3 with the interior III8 of inserting, 9, in the II6,7 that inserts be installed in the outer II2 that inserts, interior edge I4,5 is installed in the outer edge I1, the die cavity of the inner chamber formation mould of inserting in all.Being that the mould that the present invention adopts is divided into 9 assemblings, inserts and is split in inside, makes two hollow semicircle cones and fits together, and the material of inserting outward is ZG35, in insert and be ZG5CrMnMo.It is constant to insert outward, and the size of inserting in only needing to change just can form all size, can save material like this, reduces cost.Certain above-mentioned mould outer inserted also can adopt form more than three, the quantity of inserting in corresponding the increasing.The mould structure that the present invention adopts is simple, and workpiece is convenient to the demoulding, can prevent that workpiece is stuck in mould.
Claims (6)
1. fabrication technology of big flange stub axle type components, comprise smelting, forging, heat treatment, detection, machining processes, it is characterized in that: described forging process is at first to forge prefabricated blank by open die forging on large-scale hydraulic press, again prefabricated blank is placed on vertical upsetting in the mould and goes out forging part near finished size.
2. fabrication technology of big flange stub axle type components according to claim 1 is characterized in that: described prefabricated blank cutting stock weight is to be full of the required cutting stock weight of mold cavity to add fire consumption weight and thermal expansion weight.
3. fabrication technology of big flange stub axle type components according to claim 1 and 2 is characterized in that: described mould be comprise at least three successively the interlocking monoblock types insert outward; Every install in inserting outward half assembling of two branches in insert, in outer conical surface of inserting and adaptive the joining of internal conical surface of inserting outward, in the both ends of the surface of inserting equal with the both ends of the surface of inserting outward respectively, insert in two and circumferentially join; The inner chamber of inserting in all forms the die cavity of mould.
4. fabrication technology of big flange stub axle type components according to claim 3 is characterized in that: outer the inserting of described mould is three.
5. fabrication technology of big flange stub axle type components according to claim 3 is characterized in that: the described outer material of inserting is ZG35, in insert and be ZG5CrMnMo.
6. according to claim 1 or 2 or 3 described fabrication technology of big flange stub axle type components, it is characterized in that: prefabricated blank will be carried out leveling of oxide skin before upsetting is shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100595746A CN101116891A (en) | 2007-09-12 | 2007-09-12 | Fabrication technology of big flange stub axle type components |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100595746A CN101116891A (en) | 2007-09-12 | 2007-09-12 | Fabrication technology of big flange stub axle type components |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101116891A true CN101116891A (en) | 2008-02-06 |
Family
ID=39053237
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100595746A Pending CN101116891A (en) | 2007-09-12 | 2007-09-12 | Fabrication technology of big flange stub axle type components |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101116891A (en) |
Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101293267B (en) * | 2008-05-23 | 2010-06-02 | 江阴风电法兰制造有限公司 | Continuous upsetting method for large flange at axle end of large-scale wind power principal axle |
| CN101961765A (en) * | 2010-08-31 | 2011-02-02 | 岳炳坤 | Manufacturing process and equipment for upset forging of flanges |
| CN101737409B (en) * | 2008-11-04 | 2011-08-17 | 海城市德泰机械制造有限公司 | Production technology for heavy type super-long shaft |
| CN102357626A (en) * | 2011-08-27 | 2012-02-22 | 江阴振宏重型锻造有限公司 | Method for forging and pressing semi-coupler with large section and high height-diameter ratio by using 31.5 MN of oil press |
| CN102500732A (en) * | 2011-10-17 | 2012-06-20 | 浙江裕泰汽车配件有限公司 | Multi-station cold heading forming technology of automobile door limiter |
| CN102527912A (en) * | 2010-12-29 | 2012-07-04 | 中原特钢股份有限公司 | Process utilizing upper flat and lower V-shaped anvil to forge stepped shafts |
| CN102909298A (en) * | 2012-10-22 | 2013-02-06 | 沈阳黎明航空发动机(集团)有限责任公司 | Forming method of forge piece with large torsional flange and spacer flange as well as forming mold |
| CN102921852A (en) * | 2012-11-14 | 2013-02-13 | 西部钛业有限责任公司 | Preparation method of Ti31 titanium alloy flange forge piece |
| CN102941301A (en) * | 2012-11-13 | 2013-02-27 | 沈阳黎明航空发动机(集团)有限责任公司 | One-die-formed combined forming die and forming method thereof |
| CN102989946A (en) * | 2012-10-22 | 2013-03-27 | 如皋市大生线路器材有限公司 | One-step forging and forming process of pillar flange for transformer substation |
| CN103056261A (en) * | 2012-12-31 | 2013-04-24 | 重庆水轮机厂有限责任公司 | Shear and tenon resisting die forging method of light rail and simply supported beam |
| CN103056260A (en) * | 2011-10-21 | 2013-04-24 | 沈阳黎明航空发动机(集团)有限责任公司 | Formation method of long shaft type large-inclined-angle flange forging piece |
| CN103192021A (en) * | 2013-04-12 | 2013-07-10 | 吴桥县华锋五金工具有限责任公司 | Flange shaft forging method |
| CN103817283A (en) * | 2012-11-16 | 2014-05-28 | 中原特钢股份有限公司 | Shaft forging and forging process thereof |
| CN103878283A (en) * | 2012-12-21 | 2014-06-25 | 陕西宏远航空锻造有限责任公司 | Machining and manufacturing method of shaft forging dies |
| CN106001347A (en) * | 2016-06-30 | 2016-10-12 | 安徽省瑞杰锻造有限责任公司 | Foundation template forging process for inner and outer step forged piece |
| CN107282850A (en) * | 2017-07-13 | 2017-10-24 | 安徽众鑫科技股份有限公司 | A kind of stator axis forging method |
| CN110722079A (en) * | 2019-10-17 | 2020-01-24 | 浙江众通汽车零部件有限公司 | Preparation process of vertical forged shaft forging |
| CN111050961A (en) * | 2017-07-28 | 2020-04-21 | 钴领两合公司 | Cutting tool and method for machining bearing shells |
| CN113369429A (en) * | 2021-04-22 | 2021-09-10 | 江阴振宏重型锻造有限公司 | Forming method of integral die section of long-shaft-shaped fan main shaft body |
| CN114406171A (en) * | 2021-12-10 | 2022-04-29 | 钢铁研究总院 | Integrated net forming method for band-ring shaft type forge piece |
| CN114433777A (en) * | 2022-02-09 | 2022-05-06 | 通裕重工股份有限公司 | Wind power hollow main shaft inner hole extruding and expanding forming process |
-
2007
- 2007-09-12 CN CNA2007100595746A patent/CN101116891A/en active Pending
Cited By (31)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101293267B (en) * | 2008-05-23 | 2010-06-02 | 江阴风电法兰制造有限公司 | Continuous upsetting method for large flange at axle end of large-scale wind power principal axle |
| CN101737409B (en) * | 2008-11-04 | 2011-08-17 | 海城市德泰机械制造有限公司 | Production technology for heavy type super-long shaft |
| CN101961765A (en) * | 2010-08-31 | 2011-02-02 | 岳炳坤 | Manufacturing process and equipment for upset forging of flanges |
| CN101961765B (en) * | 2010-08-31 | 2012-05-30 | 岳炳坤 | Manufacturing process and equipment for upset forging of flanges |
| CN102527912A (en) * | 2010-12-29 | 2012-07-04 | 中原特钢股份有限公司 | Process utilizing upper flat and lower V-shaped anvil to forge stepped shafts |
| CN102357626A (en) * | 2011-08-27 | 2012-02-22 | 江阴振宏重型锻造有限公司 | Method for forging and pressing semi-coupler with large section and high height-diameter ratio by using 31.5 MN of oil press |
| CN102500732A (en) * | 2011-10-17 | 2012-06-20 | 浙江裕泰汽车配件有限公司 | Multi-station cold heading forming technology of automobile door limiter |
| CN103056260A (en) * | 2011-10-21 | 2013-04-24 | 沈阳黎明航空发动机(集团)有限责任公司 | Formation method of long shaft type large-inclined-angle flange forging piece |
| CN102909298A (en) * | 2012-10-22 | 2013-02-06 | 沈阳黎明航空发动机(集团)有限责任公司 | Forming method of forge piece with large torsional flange and spacer flange as well as forming mold |
| CN102989946A (en) * | 2012-10-22 | 2013-03-27 | 如皋市大生线路器材有限公司 | One-step forging and forming process of pillar flange for transformer substation |
| CN102909298B (en) * | 2012-10-22 | 2014-12-10 | 沈阳黎明航空发动机(集团)有限责任公司 | Forming method of forge piece with large torsional flange and spacer flange as well as forming mold |
| CN102941301A (en) * | 2012-11-13 | 2013-02-27 | 沈阳黎明航空发动机(集团)有限责任公司 | One-die-formed combined forming die and forming method thereof |
| CN102941301B (en) * | 2012-11-13 | 2015-09-16 | 沈阳黎明航空发动机(集团)有限责任公司 | A kind of combination loose tool of a contour forming and manufacturing process thereof |
| CN102921852A (en) * | 2012-11-14 | 2013-02-13 | 西部钛业有限责任公司 | Preparation method of Ti31 titanium alloy flange forge piece |
| CN102921852B (en) * | 2012-11-14 | 2014-11-26 | 西部钛业有限责任公司 | Preparation method of Ti31 titanium alloy flange forge piece |
| CN103817283A (en) * | 2012-11-16 | 2014-05-28 | 中原特钢股份有限公司 | Shaft forging and forging process thereof |
| CN103817283B (en) * | 2012-11-16 | 2015-12-02 | 中原特钢股份有限公司 | A kind of forged shaft and forging production technique thereof |
| CN103878283A (en) * | 2012-12-21 | 2014-06-25 | 陕西宏远航空锻造有限责任公司 | Machining and manufacturing method of shaft forging dies |
| CN103056261A (en) * | 2012-12-31 | 2013-04-24 | 重庆水轮机厂有限责任公司 | Shear and tenon resisting die forging method of light rail and simply supported beam |
| CN103192021A (en) * | 2013-04-12 | 2013-07-10 | 吴桥县华锋五金工具有限责任公司 | Flange shaft forging method |
| CN106001347A (en) * | 2016-06-30 | 2016-10-12 | 安徽省瑞杰锻造有限责任公司 | Foundation template forging process for inner and outer step forged piece |
| CN107282850A (en) * | 2017-07-13 | 2017-10-24 | 安徽众鑫科技股份有限公司 | A kind of stator axis forging method |
| CN111050961B (en) * | 2017-07-28 | 2022-01-04 | 钴领两合公司 | Cutting tool and method for machining bearing shells |
| CN111050961A (en) * | 2017-07-28 | 2020-04-21 | 钴领两合公司 | Cutting tool and method for machining bearing shells |
| CN110722079A (en) * | 2019-10-17 | 2020-01-24 | 浙江众通汽车零部件有限公司 | Preparation process of vertical forged shaft forging |
| CN110722079B (en) * | 2019-10-17 | 2021-01-01 | 浙江众通汽车零部件有限公司 | Preparation process of vertical forged shaft forging |
| CN113369429A (en) * | 2021-04-22 | 2021-09-10 | 江阴振宏重型锻造有限公司 | Forming method of integral die section of long-shaft-shaped fan main shaft body |
| CN113369429B (en) * | 2021-04-22 | 2023-10-20 | 振宏重工(江苏)股份有限公司 | Forming method for integrally die forging of main shaft body of long-shaft-shaped fan |
| CN114406171A (en) * | 2021-12-10 | 2022-04-29 | 钢铁研究总院 | Integrated net forming method for band-ring shaft type forge piece |
| CN114433777A (en) * | 2022-02-09 | 2022-05-06 | 通裕重工股份有限公司 | Wind power hollow main shaft inner hole extruding and expanding forming process |
| CN114433777B (en) * | 2022-02-09 | 2023-09-19 | 通裕重工股份有限公司 | Wind power hollow main shaft inner hole extrusion-expansion forming process |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101116891A (en) | Fabrication technology of big flange stub axle type components | |
| CN102319992B (en) | Method for manufacturing aluminum alloy die forging | |
| CN101376141B (en) | Press forming method of automobile hub and matched forming mold thereof | |
| CN100469486C (en) | Rolling preparation method for thick-walled and thin-bottomed basin parts | |
| CN100486760C (en) | Method for forging combined forged steel coupler yoke for railway vehicles | |
| CN102240772B (en) | Forming method of single elbow crankshaft forgings | |
| CN101181730A (en) | Drill pipe joint precision die forging process | |
| CN103028693B (en) | A kind of finish forge blade preformation method | |
| CN103071744B (en) | Forging method for improving quasi-beta forging uniformity of slender rod-like TC18 titanium alloy forged piece | |
| CN100371129C (en) | Tech. for forging forming of hook fastener flame of wagon and maould thereof | |
| CN104325838B (en) | A kind of high ferro wheel and hot extrusion integral forming method thereof | |
| CN107186139B (en) | The H profile steel manufacturing method of nuclear fusion stack magnet support | |
| CN110193580A (en) | A kind of H13 material forging mold technique | |
| CN109648029A (en) | The forging die set and its forging method of large thin-wall cylinder class ring flange | |
| CN103173597A (en) | Method for improving optional performances of large H13 steel hot-extrusion mould | |
| CN109365700A (en) | Complicated arc variable cross-section forging closes forging rolloff manufacturing process | |
| CN110125302A (en) | A kind of dedicated forge die of coal mine hydraulic supporting outer cylinder and forging method | |
| CN109048233A (en) | A kind of aluminium alloy wheel hub manufacturing method | |
| CN101417383B (en) | Pressing method of whole automobile axle housing | |
| CN107030235A (en) | Composite molding technique is forged in a kind of punching press | |
| CN210387405U (en) | Tool die for hot forging and cold forging composite distribution plastic forming | |
| CN102527895A (en) | Process and die for forging big circular ring with rectangular section | |
| CN105215242A (en) | A kind of forging method of die cavity (the recessed heart) module | |
| CN112475180A (en) | Forging die and method for step shaft type forge piece | |
| CN106391981B (en) | Main Steam Piping of Ultra Supercritical Units skew T gabarit free forging method |
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 |