CN109513872A - A kind of forging method of thermoelectricity rotor - Google Patents
A kind of forging method of thermoelectricity rotor Download PDFInfo
- Publication number
- CN109513872A CN109513872A CN201811342960.0A CN201811342960A CN109513872A CN 109513872 A CN109513872 A CN 109513872A CN 201811342960 A CN201811342960 A CN 201811342960A CN 109513872 A CN109513872 A CN 109513872A
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- steel ingot
- forging
- anvil
- jumping
- compacted
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- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/002—Hybrid process, e.g. forging following casting
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
The present invention relates to forging technology fields, disclose a kind of forging method of thermoelectricity rotor.Described method includes following steps: carrying out handle processing to Steel ingot feeder head using upper and lower flat anvil, obtains the steel ingot with pincers handle, will pass through the clamping pincers the fixed steel ingot；Steel ingot is subjected to first time jumping-up, and the steel ingot after jumping-up is subjected to wide anvil for the first time and is suppressed；Steel ingot is carried out by center compacting using J. T. S Forging, to be compacted steel ingot center portion；Steel ingot is subjected to second of jumping-up, and the steel ingot after jumping-up is subjected to second wide anvil and is suppressed, so that steel ingot forging is saturating；Forging method is suppressed using wide anvil to pull out the steel ingot；The steel ingot is subjected to impression sub-material process using upper flat anvil, lower V-type anvil, and processing is formed and obtains thermoelectricity rotor.The forging method of thermoelectricity rotor provided by the invention, reduces primary pulling and center is compacted process, under the premise of guaranteeing forging internal soundness, reduces the number heated in forging process, reduces the consumption of the energy.
Description
Technical field
The present invention relates to forging technology field, the forging method of specifically a kind of thermoelectricity rotor.
Background technique
In recent years, thermal power generating equipment comes into higher level developing stage, and the wherein large forgings in thermal power generating equipment is
The high-tech product that the technologies such as compound material, smelting, forging, heat treatment are integrated.
Wherein, with the continuous increase of fired power generating unit, dimensional weight increases with it the rotor forging in thermal power generating equipment, existing
Thermoelectricity rotor mostly forged by steel ingot, steel ingot is bigger, and the segregation in forging process is more serious, and internal flaw is also more,
In order to overcome the problems, such as this, the prior art mostly uses greatly multiple jumping-up+multiple pulling+repeatedly center compacting method to carry out fire
The forging of electric rotor, but process is comparatively laborious tediously long, mainly improves the matter of thermoelectricity rotor forging by increasing forging amount
Amount.
As it can be seen that by the way of repeated multiple times jumping-up, pulling and compacting, holding in the traditional forging process of thermoelectricity rotor
Easily cause heating times more, heating fuel consumption is high, waste is big and forging equipment needs long-play, not only waste electricity
Source is also easy to so that forging equipment overloads.
Summary of the invention
In view of the deficiencies of the prior art, the present invention provides a kind of forging method of thermoelectricity rotor, can effectively solve the problem that existing
Thermoelectricity rotor complex procedures, the problem that energy consumption is big and working hour is too long are forged in technology.
The invention is realized in this way a kind of forging method of thermoelectricity rotor, includes the following steps:
Handle processing is carried out to Steel ingot feeder head using upper and lower flat anvil, obtains the steel ingot with pincers handle, will pass through clamping
The pincers are the fixed steel ingot；
The steel ingot is subjected to first time jumping-up using upper and lower flat anvil, and the steel ingot after jumping-up is subjected to width for the first time
Anvil is suppressed, by the preliminary forging and molding of the steel ingot；
The steel ingot is carried out by center compacting using J. T. S Forging, to be compacted the steel ingot center portion；
The steel ingot is subjected to second of jumping-up using upper and lower flat anvil, and the steel ingot after jumping-up is subjected to second of width
Anvil is suppressed, so that steel ingot forging is saturating；
Forging method is suppressed using wide anvil to pull out the steel ingot；
The steel ingot is subjected to impression sub-material process using upper flat anvil, lower V-type anvil, and processing is formed and obtains thermoelectricity turn
Son.
Further, described that the steel ingot is carried out by center compacting using J. T. S Forging, to be compacted the steel ingot
Center portion, specifically:
Upper anvil is compacted using relatively narrow Special central and lower wide anvil forges and presses the surface of steel ingot, so that the steel ingot
Inside is compacted by the effect of three-dimensional compressive stress；
The steel ingot is turned over turn 90 degrees, 180 degree and 270 degree, reuse respectively relatively narrow Special central be compacted upper anvil and
Lower width anvil forges and presses the surface of the steel ingot, so as to be compacted inside the steel ingot by the effect of three-dimensional compressive stress.
It is further, described that handle processing is carried out to Steel ingot feeder head using upper and lower flat anvil, specifically:
The pincers handle that the inner hole that the riser of the steel ingot forges into diameter and jumping-up drain cap is matched using upper and lower flat anvil.
Further, described that handle processing is carried out to Steel ingot feeder head using upper and lower flat anvil, obtain the steel ingot with pincers handle
Later, further includes:
If it is described pincers length be greater than the jumping-up drain cap clamping inner hole depth, by it is described pincers cut at
Reason, cut-out clamp handle.
The forging method of thermoelectricity rotor provided by the invention reduces and is compacted process with secondary pulling and center, guarantees forging
Under the premise of internal soundness, it is only necessary to which jumping-up and subcenter compacting twice greatly improved forging production efficiency, reduce forging
The number heated during making and total soaking time, reduce the consumption of the energy, while shortening the use time of equipment, effectively prolong
Long equipment life.
Detailed description of the invention
Fig. 1 is the flow chart of the forging method of thermoelectricity rotor in the embodiment of the present invention；
Fig. 2 is the flow chart that steel ingot is carried out in the forging method of thermoelectricity rotor center compacting in the embodiment of the present invention；
Fig. 3 is the schematic diagram of structural changes of thermoelectricity rotor forging process steel ingot in the embodiment of the present invention.
Specific embodiment
In order to keep the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, to this hair
It is bright to be further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and do not have to
In limiting the present invention, specific implementation of the invention is described in detail below in conjunction with specific embodiment.
As shown in Figure 1, being the flow chart of the forging method of thermoelectricity rotor in the embodiment of the present invention, in the embodiment of the present invention
In, a kind of forging method of thermoelectricity rotor includes the following steps:
Step S101 carries out handle processing to Steel ingot feeder head using upper and lower flat anvil, the steel ingot with pincers handle is obtained, will pass through
Gripper clamp is fixed steel ingot.
In embodiments of the present invention, the steel ingot that common truncated cone can be used of steel ingot, can also be rectangular, cylinder
Shape, the present invention do not do further limitation.
Steel ingot is carried out first time jumping-up using upper and lower flat anvil, and the steel ingot after jumping-up is carried out for the first time by step S102
Wide anvil is suppressed, by the preliminary forging and molding of steel ingot；
In embodiments of the present invention, after steel ingot progress first time jumping-up and wide anvil being suppressed, the shape of steel ingot becomes band pincers
Tetragonal body shape steel ingot, specifically can be cuboid or tetragonal body.
Steel ingot is carried out center compacting using J. T. S Forging, to be compacted steel ingot center portion by step S103；
In embodiments of the present invention, J. T. S Forging is that steel ingot (base) is heated to after initial forging temperature not direct weighting
Forging, but makes its surface quickly force to cool down with the method for air blast or atomized water spray, make steel ingot (base) it is inside and outside generate 250 DEG C~
350 DEG C of the temperature difference imposes strength with relatively narrow hammering block and suppresses, to reach using the marked difference of inside and outside interlayer deformation drag
Be compacted center portion hole, it is loose the defects of purpose.
Steel ingot is carried out second of jumping-up using upper and lower flat anvil, and the steel ingot after jumping-up is carried out second by step S104
Wide anvil is suppressed, so that steel ingot forging is saturating；
In embodiments of the present invention, steel ingot is subjected to second of jumping-up and wide anvil suppresses the steel that can will be compacted by center
Ingot further forges, and guarantees the quality of forging.
Step S105 suppresses forging method using wide anvil and pulls out steel ingot；
Steel ingot is carried out impression sub-material process using upper flat anvil, lower V-type anvil, and processing is formed and obtains by step S106
Thermoelectricity rotor.
As shown in Fig. 2, in an embodiment of the invention, step S103 uses J. T. S Forging to carry out steel ingot
Center compacting, to be compacted steel ingot center portion, specifically:
Step S201 is compacted upper anvil using relatively narrow Special central and lower wide anvil forges and presses surface of steel ingot, so that steel
It is compacted inside ingot by the effect of three-dimensional compressive stress；
Step S202, steel ingot is turned over turn 90 degrees, 180 degree and 270 degree, reused in relatively narrow Special central compacting respectively
Anvil and lower wide anvil forge and press the surface of steel ingot, so as to be compacted inside steel ingot by the effect of three-dimensional compressive stress.
In embodiments of the present invention, three-dimensional compressive stress refers to extrusion stress state, becomes in plastically deforming area when referring to extruding
Stress state on body unit section, essentially three-dimensional compressive stress state, i.e. axial compression stress, hoop pressure stress and radial pressure
Stress.Enable to steel ingot by three-dimensional compressive stress when being compacted using Special central compacting, three-dimensional compressive stress state has
Conducive to the various destructions due to caused by plastic deformation are eliminated, the connection for the transgranular and intergranular being destroyed can be promoted to be restored,
So that metal becomes fine and close, and various micro-flaws or even macroscopic failure can also be made to be repaired.
In embodiments of the present invention, handle processing is carried out to Steel ingot feeder head using upper and lower flat anvil, is specially using upper and lower
The pincers handle that flat anvil matches the clamping inner hole that the riser of steel ingot forges into diameter and jumping-up drain cap.
In embodiments of the present invention, handle processing is carried out to Steel ingot feeder head using upper and lower flat anvil, obtains the steel ingot with pincers handle
Later, if pincers are greater than length the depth of jumping-up drain cap clamping inner hole, by pincers cut processing, cut-out clamps handle.
As shown in figure 3, for the schematic diagram of structural changes of thermoelectricity rotor forging process steel ingot in the embodiment of the present invention, wherein a,
B, d, c, e, f are corresponding with step S101~S106 respectively.Rotor after forging after flaw detection, do not found inside forging it is loose with
And other defect.
In addition, in one embodiment of the invention, by using the thermoelectricity of forging method manufacture 1000MW of the invention
Forging technology phase when Steam Turbine low pressure rotor, with traditional " the wide anvil of jumping-up+twice suppresses the compacting of+two subcenters twice "
Than the material weight used and time comparison are as shown in Table 1:
Table one:
| Serial number | Technological parameter | Tradition forging | Present invention forging | Reduce percentage |
| 1 | Forging-grade ingot weight | 233 tons | 227 tons | 2.6% |
| 2 | Forge Heating soaking time | 112.5 hour | 93 hours | 17.3% |
| 3 | Forging equipment uses the time | 10 hours | 8.5 hour | 15% |
As it can be seen that the forging method of thermoelectricity rotor provided by the invention, reduces primary pulling and center is compacted process, guarantee
Under the premise of forging internal soundness, it is only necessary to which jumping-up and subcenter compacting twice greatly improved forging production efficiency, reduce
The number heated in forging process and total soaking time, reduce the consumption of the energy, reduce the usage amount of ingot material, together
When shorten equipment use the time, effectively extend equipment life.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included within the present invention.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (4)
1. a kind of forging method of thermoelectricity rotor, which is characterized in that described method includes following steps:
Handle processing is carried out to Steel ingot feeder head using upper and lower flat anvil, the steel ingot with pincers handle is obtained, will pass through described in clamping
Pincers are the fixed steel ingot；
The steel ingot is subjected to first time jumping-up using upper and lower flat anvil, and wide anvil is strong for the first time by the steel ingot progress after jumping-up
Pressure, by the preliminary forging and molding of the steel ingot；
The steel ingot is carried out by center compacting using J. T. S Forging, to be compacted the steel ingot center portion；
The steel ingot is subjected to second of jumping-up using upper and lower flat anvil, and the second wide anvil of steel ingot progress after jumping-up is strong
Pressure, so that steel ingot forging is saturating；
Forging method is suppressed using wide anvil to pull out the steel ingot；
The steel ingot is subjected to impression sub-material process using upper flat anvil, lower V-type anvil, and processing is formed and obtains thermoelectricity rotor.
2. forging method as described in claim 1, which is characterized in that it is described using J. T. S Forging by the steel ingot into
The compacting of row center, to be compacted the steel ingot center portion, specifically:
Upper anvil is compacted using relatively narrow Special central and lower wide anvil forges and presses the surface of steel ingot, so that inside the steel ingot
Effect by three-dimensional compressive stress is compacted；
The steel ingot is turned over turn 90 degrees, 180 degree and 270 degree, reuse relatively narrow Special central respectively and be compacted upper anvil and lower width
Anvil forges and presses the surface of the steel ingot, so as to be compacted inside the steel ingot by the effect of three-dimensional compressive stress.
3. forging method as described in claim 1, which is characterized in that described to carry out handle to Steel ingot feeder head using upper and lower flat anvil
Processing, specifically:
The pincers handle that the inner hole that the riser of the steel ingot forges into diameter and jumping-up drain cap is matched using upper and lower flat anvil.
4. forging method as claimed in claim 3, which is characterized in that described to carry out handle to Steel ingot feeder head using upper and lower flat anvil
Processing is obtained with after the steel ingot for clamping handle, further includes:
If the pincers are greater than length the depth of jumping-up drain cap clamping inner hole, by the pincers cut processing, cut
Except handle is clamped in part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811342960.0A CN109513872A (en) | 2018-11-12 | 2018-11-12 | A kind of forging method of thermoelectricity rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811342960.0A CN109513872A (en) | 2018-11-12 | 2018-11-12 | A kind of forging method of thermoelectricity rotor |
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| Publication Number | Publication Date |
|---|---|
| CN109513872A true CN109513872A (en) | 2019-03-26 |
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|---|---|---|---|
| CN201811342960.0A Pending CN109513872A (en) | 2018-11-12 | 2018-11-12 | A kind of forging method of thermoelectricity rotor |
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|---|---|---|---|---|
| US20050238493A1 (en) * | 2003-06-18 | 2005-10-27 | General Electric Company | Multiple alloy rotor and method therefor |
| CN102039364A (en) * | 2010-11-12 | 2011-05-04 | 无锡宏达重型锻压有限公司 | Shaping process of fan shaft |
| CN102076965A (en) * | 2008-06-24 | 2011-05-25 | 昭和电工株式会社 | Method for producing rotor |
| CN102172766A (en) * | 2010-12-30 | 2011-09-07 | 二重集团（德阳）重型装备股份有限公司 | Forging process for nuclear power rotor and other large shaft parts |
| CN102703832A (en) * | 2012-06-28 | 2012-10-03 | 江苏金源锻造股份有限公司 | Forging process for thermal power rotor |
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| CN106238659A (en) * | 2016-08-24 | 2016-12-21 | 江苏金源高端装备股份有限公司 | A kind of large electric power plant rotor Forging Technology |
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2018
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Application publication date: 20190326 |