CN105855807A - Manufacturing technique of wind generator spindle forging piece - Google Patents
Manufacturing technique of wind generator spindle forging piece Download PDFInfo
- Publication number
- CN105855807A CN105855807A CN201610324111.7A CN201610324111A CN105855807A CN 105855807 A CN105855807 A CN 105855807A CN 201610324111 A CN201610324111 A CN 201610324111A CN 105855807 A CN105855807 A CN 105855807A
- Authority
- CN
- China
- Prior art keywords
- forging
- steel billet
- inner chamber
- steel
- driven generator
- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
-
- 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
- B21J13/02—Dies or mountings therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K1/00—Making machine elements
- B21K1/06—Making machine elements axles or shafts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2240/00—Components
- F05B2240/60—Shafts
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
The invention relates to a manufacturing technique of a wind generator spindle forging piece. According to the manufacturing technique, the 2 MW wind generator spindle forging piece is obtained through six procedures including hot-forging molding, thermal treatment, milling, quenched-tempered heat treatment, fine turning and drilling, wherein in the hot forging molding process, twice upsetting and twice drawing are adopted, the wide anvil drawing forging technology is also adopted, and the flaw detection requirement of the forging piece is met through sufficient forging deformation; and in the quenched-tempered thermal treatment process, tap water is used as a quenching medium in the quenching process, the wind generator spindle forging piece is completely soaked in the tap water for 20-60 minutes during quenching, then the wind generator spindle forging piece is taken out of the water and cooled in air for 120 minutes, and finally the wind generator spindle forging piece is charged to a tempering furnace to be tempered.
Description
Technical field
The invention belongs to the processing technique field of wind turbine component, particularly to a kind of wind-force
The preparation technology of generator main forging shaft.
Background technology
Society, along with the problems such as global energy shortage and environmental pollution are increasingly serious, find regenerative resource and becomes
The key subjects faced for countries in the world.And nature wind energy is compared with other energy, not only reserves are big, widely distributed, forever
The most exhausted, but also it is short, stronger than the basic less investment of the construction of hydropower stations, motility to have upper detective, construction period, and can be effective
Containment greenhouse effect and Sandstorm Disaster, the feature such as environmental protection.Therefore, wind power generation is utilized to become as new energy development
The whole world important component part of future source of energy development strategy and receive the great attention of various countries and support energetically.But, due to
The technology of currently manufactured wind power equipment is not mature enough, causes wind power plant expensive, and cost of wind power generation is higher, wind power price
Higher than coal electricity electricity price, thus constrain the fast development of wind-powered electricity generation.
It is the supporting part of wind power equipment for wind turbine equipment MW level Wind turbines wind power principal axis, needs stronger
Under wind energy, the ambient temperatures such as subzero 40 DEG C, meet the specific use requirements such as bearing load, so mainly using forging.Fig. 1
Show an exemplary schematic diagram of existing main shaft manufacturing process.
Usual main shaft used for wind power generation is that by steel ingot, (ingot or bloom are heated to the high temperature of more than 1200 DEG C at heating furnace
Again with after forcing press pressurization jumping-up, by be placed in by the described blank 1 of jumping-up between the upper die and lower die of hydraulic press carry out along
The outer peripheral face forging die of the cogging blank 2 that its length direction (transverse direction) pressurizes repeatedly repeatedly pressurizes and carries out finish-forging operation, thus
Manufacture main shaft intermediate products 3.
Owing to the ultimate criterion main shaft of the intermediate products so formed and requirement has obvious difference, then bored a hole by formation
Roughing and the cutting process of fining-off complete final products；This manufacturing process is the most rough, causes unstable product quality,
Under still difficult satisfied stronger wind energy, significantly temperature contrast, bear the specific use requirements such as load safely and steadly.
Summary of the invention
The technical problem to be solved in the present invention is to provide the preparation technology of a kind of wind driven generator principal shaft forging, and this prepares work
Skill, by improving hot-forging forming and Tempering and Quenching operation, obtains the wind-power electricity generation that toughness is high, low temperature resistant and intensity is high
Owner's forging shaft.
For solving above-mentioned technical problem, the technical scheme is that the preparation work of a kind of wind driven generator principal shaft forging
Skill, through hot-forging forming, heat treatment, turnery processing, Tempering and Quenching, finish turning and six operations of boring, prepares 2MW wind-force and sends out
Electric machine main shaft forging, its innovative point is:
Concretely comprising the following steps of described hot-forging forming:
(1) raw steel ingot cuts rising head, the wrong flat scarfing new steel ingot of smooth formation in the mouth of a river, is then arrived by new Heating Steel Ingots in heating furnace
The high temperature of more than 1200 DEG C, then by new steel ingot through once thick, pressure from all directions, secondary is thick and four operations of pulling, forms one
Cylindrical steel billet, base diameter is 1450mm, and height is 1550mm；
(2) during sub-material, raw steel ingot mouth of a river end be used for forging spindle flange, former Steel ingot feeder head end be used for forging main shaft axle body, i.e. with
Being starting point bottom steel billet, amount height is 540mm, and its remaining steel billet first pulls out the steel billet axis body A to a diameter of 990mm, with close
Steel billet axis body A bottom steel billet is starting point, and amount height is 300mm, then pulls out remaining steel billet axis body A to a diameter of 960mm's
Steel billet axis body B, forms a step-like steel billet；
(3) getting flange mould ready, this mould includes die ontology, and in described die ontology, hollow out is formed with die cavity, described die cavity
Including heavy caliber inner chamber and the small-bore inner chamber of the most through setting, described heavy caliber inner chamber and small-bore inner chamber are in coaxially
The heart is arranged, and by annulus transition between heavy caliber inner chamber and small-bore inner chamber；
(4) oxide skin of step-like billet surface in cleanup step (2), after cleaning terminates, lifts up into flange mould by step-like steel billet
Tool, adjusts, will press under big face, and flange head is depressed into diameter between 1800-1810mm, and height is between 280-290mm, finally
Step-like steel billet with flange head is hung out；
(5) clamp after smooth flange head, by forging drawing, axle body is pulled out to requirement size, form wind driven generator principal shaft forging；
In described Tempering and Quenching, during quenching, using tap water as hardening media, during quenching, wind driven generator principal shaft forging is complete
Entirely being dipped under tap water holding 20-60min, water temperature controls, at 15-45 DEG C, then to go out water-air cooling 120min, reinstalls stove tempering.
Further, the temperature of described hot-forging forming operation controls at 1210-800 DEG C, and finishing temperature is more than 750 DEG C.
It is an advantage of the current invention that: the preparation technology of wind driven generator principal shaft forging of the present invention, this preparation technology is by right
Hot-forging forming and Tempering and Quenching operation improve, and in hot-forging forming operation, use two upsettings two to pull out, and the forging of wide anvil pulling
Make technology, fully through forging deformation, it is ensured that forging flaw detection requirement；And when sub-material, raw steel ingot mouth of a river end is used for forging main shaft
Flange, former Steel ingot feeder head end is used for forging main shaft axle body, it is possible to make full use of steel ingot raw material, reduces preparation cost；Meanwhile, quenched
In heat treatment step, during quenching, use tap water as hardening media, with former employing quenching liquid or oil phase ratio, will not produce
Environmental pollution, environmental protection, and reduce cost；By this preparation technology, prepared wind driven generator principal shaft forging, have toughness high,
The feature that low temperature resistant and intensity is high.
Accompanying drawing explanation
The present invention is further detailed explanation with detailed description of the invention below in conjunction with the accompanying drawings.
Fig. 1 is an exemplary schematic diagram of existing wind driven generator principal shaft manufacturing process.
Fig. 2 to Figure 11 is the process schematic of the preparation technology of embodiment 2MW wind driven generator principal shaft forging in the present invention.
Figure 12 is the graph of a relation of temperature and time in heat treatment process.
Figure 13 is the graph of a relation of temperature and time during Tempering and Quenching.
Detailed description of the invention
The following examples can make professional and technical personnel that the present invention is more fully understood, but the most therefore by this
Bright it is limited among described scope of embodiments.
Embodiment
The preparation technology of the present embodiment 2MW wind driven generator principal shaft forging, this preparation technology specifically comprises the following steps that
(1) raw steel ingot cuts rising head, the wrong flat scarfing new steel ingot of smooth formation in the mouth of a river, is then arrived by new Heating Steel Ingots in heating furnace
The high temperature of 1210 DEG C, then by new steel ingot through thick, as it is shown in figure 1, form the steel billet A of a cylinder, base diameter is
1850mm, height is 950mm；Then by steel billet A pressure from all directions, as in figure 2 it is shown, form big little steel billet B, base diameter
For 1300mm, height is 1920mm；Then steel billet B is thick, as it is shown on figure 3, form big little steel billet C, bottom is straight
Footpath is 1850mm, and height is 950mm；Finally being pulled out by steel billet C, as shown in Figure 4, form big little steel billet D, bottom is straight
Footpath is 1450mm, and height is 1550mm.
(2) raw steel ingot mouth of a river end is used for forging spindle flange, and former Steel ingot feeder head end is used for forging main shaft axle body, such as Fig. 5 institute
Show, i.e. with bottom steel billet D as starting point, amount height is 540mm, and its remaining steel billet first pulls out the steel billet axis body to a diameter of 990mm
A；As shown in Figure 6, with the steel billet axis body A bottom steel billet as starting point, amount height is 300mm, then by remaining steel billet axis body A
Pull out the steel billet axis body B to a diameter of 960mm, form a step-like steel billet.
(3) getting flange mould ready, as it is shown in fig. 7, this mould includes die ontology 1, in this die ontology, hollow out is formed
Die cavity 2, die cavity 2 includes heavy caliber inner chamber 21 and the small-bore inner chamber 22 of the most through setting, heavy caliber inner chamber 21 and little
Bore inner chamber 22 is arranged in concentric, and by annulus transition between heavy caliber inner chamber 21 and small-bore inner chamber 21, bigbore
Maximum is directly 1350mm, and heavy caliber is 150mm away from small-bore height, and small-bore maximum gauge is 1050mm, minimum
Bore is 1020mm.
(4) oxide skin of step-like billet surface in cleanup step (2), after cleaning terminates, as shown in Figure 8, by step-like
Flange mould lifted up into by steel billet, adjusts, and will press under big face, as it is shown in figure 9, flange head is depressed into a diameter of 1810mm, height is
290mm, finally hangs out the step-like steel billet with flange head.
(5) clamp after smooth flange head, by forging drawing, axle body is pulled out to requirement size, as shown in Figure 10, form wind-force and send out
Electric machine main shaft forging, this wind driven generator principal shaft forging includes axle body, axle body and flange head changeover portion and flange head successively, its
In, axle body includes a diameter of 610mm, and height is the axle body A of 854mm, a diameter of 650mm, and height is the axle body B of 510mm, diameter
For 800mm, height is the axle body C and a diameter of 890mm of 1690mm, and height is the axle body D of 1690mm；Axle body and flange head transition
Section be round table-like, near a diameter of 1050mm of axle body one end, a diameter of 1270mm of close flange one end, and axle body and flange
The height of head changeover portion is 100mm；A diameter of 1810mm of flange head, height is 290mm.
(6) heat treatment: after hot-forging forming, as shown in figure 12, forging, to 300-350 DEG C, is then sent at heat by first air cooling
In reason stove after lower insulation 10 hours, then furnace temperature is warming up to 630-670 DEG C with the speed of 70-80 DEG C/h, protects at this temperature
Temperature 6 hours；The most again furnace temperature is warming up to 850-890 DEG C with the speed of 70-80 DEG C/h, at this temperature insulation 20 hours；Connect
That employing wind mist is cold is cooled to 280-320 DEG C, at this temperature insulation 15 hours, then by furnace temperature with the speed liter of 50-60 DEG C/h
Temperature, to 630-670 DEG C, is incubated 40 hours at this temperature；Finally forging is come out of the stove, bury rapidly sand after coming out of the stove, at a temperature of forging
When being down to 90-100 DEG C, forging is shaked out；
(7) turnery processing: on lathe, utilizes the rotary motion of workpiece and the linear motion of cutter or curvilinear motion to change wind
The shape and size of power generator main shaft forging blank, are processed into it the requirement meeting product drawing；
(8) Tempering and Quenching: the forging after turnery processing is sent in Tempering and Quenching stove, as shown in figure 13, by furnace temperature with 60
DEG C/speed of h is warming up to 350 DEG C, insulation 2 hours at this temperature；Then furnace temperature is warming up to 650 with the speed of 60 DEG C/h
DEG C, insulation 3 hours at this temperature；Then with the speed of 60 DEG C/h, furnace temperature being warming up to 850 DEG C, insulation 19 is little at this temperature
Time；Again by forging pre-cooling 6 minutes, during quenching, use tap water as medium, water-cooled water outlet after 35 minutes；By the forging after water outlet
Feeding is melted down in stove and is tempered, and with the speed of 40 DEG C/h, furnace temperature is warming up to 350 DEG C, at this temperature insulation 3 hours；Then by stove
Temperature is warming up to 600 DEG C with the speed of 40 DEG C/h, at this temperature insulation 26 hours；Then forging is come out of the stove cooling.
(9) according to the wind driven generator principal shaft forging blank dimensional requirement of Tempering and Quenching, at conventional lathe or numerical control lathe
Carry out finished product polish on Chuan, reach finished size tolerance.
(10) last, the wind driven generator principal shaft forging of polish is carried out boring process, forms a 2MW wind-driven generator
Main shaft forging finished product.
For testing wind power generation owner's forging shaft end properties, taking several groups of samples and test, its test result is such as
Following table:
| Sequence number | Specimen finish d/ mm | Have no progeny diameter du/ mm | Have no progeny gauge length Lu/ mm | Yield strength RP0.2/ MPa | Tensile strength Rm/ MPa | Elongation after fracture A/% | Have no progeny shrinkage factor Z/% | Impact breach class Type U | Impact breach class Type V | Test temperature/DEG C |
| 1 | 12.50 | 7.66 | 60.60 | 715 | 858 | 21.0 | 62 | √ | Subzero 40 DEG C | |
| 2 | 12.49 | 7.52 | 60.18 | 720 | 850 | 20.5 | 64 | √ | Subzero 40 DEG C | |
| 3 | 12.48 | 7.50 | 60.60 | 709 | 846 | 21.0 | 64 | √ | Subzero 40 DEG C | |
| 4 | 12.51 | 7.60 | 60.30 | 695 | 837 | 20.5 | 63 | √ | Subzero 40 DEG C |
As can be seen from the above table, the wind driven generator principal shaft forging that the present invention prepares, have that toughness is high, low temperature resistant and intensity is high
Feature.
The ultimate principle of the present invention and principal character and advantages of the present invention have more than been shown and described.The skill of the industry
The art personnel simply explanation it should be appreciated that the present invention is not restricted to the described embodiments, described in above-described embodiment and description
The principle of the present invention, without departing from the spirit and scope of the present invention, the present invention also has various changes and modifications, these
Changes and improvements both fall within scope of the claimed invention.Claimed scope by appending claims and
Its equivalent defines.
Claims (2)
1. a preparation technology for wind driven generator principal shaft forging, at hot-forging forming, heat treatment, turnery processing, quenched heat
Reason, finish turning and six operations of boring, prepare 2MW wind driven generator principal shaft forging, it is characterised in that:
Concretely comprising the following steps of described hot-forging forming:
(1) raw steel ingot cuts rising head, the wrong flat scarfing new steel ingot of smooth formation in the mouth of a river, is then arrived by new Heating Steel Ingots in heating furnace
The high temperature of more than 1200 DEG C, then by new steel ingot through once thick, pressure from all directions, secondary is thick and four operations of pulling, forms one
Cylindrical steel billet, base diameter is 1450mm, and height is 1550mm；
(2) during sub-material, raw steel ingot mouth of a river end be used for forging spindle flange, former Steel ingot feeder head end be used for forging main shaft axle body, i.e. with
Being starting point bottom steel billet, amount height is 540mm, and its remaining steel billet first pulls out the steel billet axis body A to a diameter of 990mm, with close
Steel billet axis body A bottom steel billet is starting point, and amount height is 300mm, then pulls out remaining steel billet axis body A to a diameter of 960mm's
Steel billet axis body B, forms a step-like steel billet；
(3) getting flange mould ready, this mould includes die ontology, and in described die ontology, hollow out is formed with die cavity, described die cavity
Including heavy caliber inner chamber and the small-bore inner chamber of the most through setting, described heavy caliber inner chamber and small-bore inner chamber are in coaxially
The heart is arranged, and by annulus transition between heavy caliber inner chamber and small-bore inner chamber；
(4) oxide skin of step-like billet surface in cleanup step (2), after cleaning terminates, lifts up into flange mould by step-like steel billet
Tool, adjusts, will press under big face, and flange head is depressed into diameter between 1800-1810mm, and height is between 280-290mm, finally
Step-like steel billet with flange head is hung out；
(5) clamp after smooth flange head, by forging drawing, axle body is pulled out to requirement size, form wind driven generator principal shaft forging；
In described Tempering and Quenching, during quenching, using tap water as hardening media, during quenching, wind driven generator principal shaft forging is complete
Entirely being dipped under tap water holding 20-60min, water temperature controls, at 15-45 DEG C, then to go out water-air cooling 120min, reinstalls stove tempering.
The preparation technology of wind driven generator principal shaft forging the most according to claim 1, it is characterised in that: described hot-forging forming
The temperature of operation controls at 1210-800 DEG C, and finishing temperature is more than 750 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610324111.7A CN105855807A (en) | 2016-05-13 | 2016-05-13 | Manufacturing technique of wind generator spindle forging piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610324111.7A CN105855807A (en) | 2016-05-13 | 2016-05-13 | Manufacturing technique of wind generator spindle forging piece |
Publications (1)
| Publication Number | Publication Date |
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| CN105855807A true CN105855807A (en) | 2016-08-17 |
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ID=56635054
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610324111.7A Pending CN105855807A (en) | 2016-05-13 | 2016-05-13 | Manufacturing technique of wind generator spindle forging piece |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030230069A1 (en) * | 2002-06-14 | 2003-12-18 | Komatsu Ltd. | Track link production method and track link produced by the same |
| CN101293269A (en) * | 2008-05-23 | 2008-10-29 | 江阴风电法兰制造有限公司 | Non-flash groove, non ingot tail smithing method for large-scale wind power principal axle |
| CN102699637A (en) * | 2012-06-26 | 2012-10-03 | 江苏金源锻造股份有限公司 | Process for forging main shaft flange of wind driven generator |
| CN103469092A (en) * | 2013-07-26 | 2013-12-25 | 中原特钢股份有限公司 | Production method for main shaft of fan by using 34CrNiMo6 steel as raw material |
| CN104889308A (en) * | 2015-05-21 | 2015-09-09 | 中原特钢股份有限公司 | Method for forging wind power generation spindle |
| CN105251921A (en) * | 2014-07-15 | 2016-01-20 | 匡永刚 | Forging process for main shaft of wind driven generator |
-
2016
- 2016-05-13 CN CN201610324111.7A patent/CN105855807A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030230069A1 (en) * | 2002-06-14 | 2003-12-18 | Komatsu Ltd. | Track link production method and track link produced by the same |
| CN101293269A (en) * | 2008-05-23 | 2008-10-29 | 江阴风电法兰制造有限公司 | Non-flash groove, non ingot tail smithing method for large-scale wind power principal axle |
| CN102699637A (en) * | 2012-06-26 | 2012-10-03 | 江苏金源锻造股份有限公司 | Process for forging main shaft flange of wind driven generator |
| CN103469092A (en) * | 2013-07-26 | 2013-12-25 | 中原特钢股份有限公司 | Production method for main shaft of fan by using 34CrNiMo6 steel as raw material |
| CN105251921A (en) * | 2014-07-15 | 2016-01-20 | 匡永刚 | Forging process for main shaft of wind driven generator |
| CN104889308A (en) * | 2015-05-21 | 2015-09-09 | 中原特钢股份有限公司 | Method for forging wind power generation spindle |
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Application publication date: 20160817 |