CN106695256A - Ring rolling technology for profiling and shaping large-tapered wind-electricity bearing inner ring - Google Patents

Ring rolling technology for profiling and shaping large-tapered wind-electricity bearing inner ring Download PDF

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Publication number
CN106695256A
CN106695256A CN201611198251.0A CN201611198251A CN106695256A CN 106695256 A CN106695256 A CN 106695256A CN 201611198251 A CN201611198251 A CN 201611198251A CN 106695256 A CN106695256 A CN 106695256A
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Prior art keywords
profiling
ring
looping mill
mill rolling
finished
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CN201611198251.0A
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Chinese (zh)
Inventor
黄攀
周洪
吴立民
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JIANGSU XIANGNENG TECHNOLOGY DEVELOPMENT Co Ltd
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JIANGSU XIANGNENG TECHNOLOGY DEVELOPMENT Co Ltd
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Priority to CN201611198251.0A priority Critical patent/CN106695256A/en
Publication of CN106695256A publication Critical patent/CN106695256A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23PMETAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • B23P15/003Making specific metal objects by operations not covered by a single other subclass or a group in this subclass bearings

Abstract

The invention discloses a ring rolling technology for profiling and shaping a large-tapered wind-electricity bearing inner ring. The ring rolling technology comprises the following technology steps of: performing detection; performing blanking; performing heating; making a profile modelling blank; rolling the profile modelling blank; performing whole-round sizing; performing detection during forging; performing thermal treatment; taking a performance test; performing machining; performing hardness inspection; performing final inspection; performing labelling; and performing packaging. Through the adoption of the ring rolling technology disclosed by the invention, the utilization rate of raw materials is greatly increased, and the gas consumption and the cost of subsequent processing are reduced; a forging flow line is not damaged in the subsequent machining; and moulds are high in flexibility, so that the effect that a mould set is used for rolling forge pieces of various models is realized, and the tooling cost is reduced.

Description

A kind of looping mill rolling technique of steep-taper wind power bearing inner ring profiling shaping
Technical field
The present invention relates to a kind of looping mill rolling technique of steep-taper wind power bearing inner ring profiling shaping, it is adaptable to which precision forging is led Domain.
Background technology
In traditional joint forging technology, for steep-taper wind energy bearing inner race according to its features of shape directly using open die forging+ Start forging part to be manufactured, by the development of recent decades, progressively substitution open die forging is produced Ring Rolling Technology & as ring The main mode of production of product, rectangular-shaped piece method for designing is the main flow of ring at that time, in recent years with capacity of equipment and looping mill rolling skill The raising of art, imitation shape piece design starts gradually occuping market, and dominates the market at one stroke, and but product material loss is reduction of imitative Die cost really increasingly increases input by shape part, often covers a kind of frock model of correspondence, great in production process to occupy manpower and thing Power, and market is fast changing, and many type product model upgradings, change or demand disappear or reduce, and cause phase Correspondence profiling mould invalidation, die cost is greatly wasted.Rectangle forging machining allowance is big in existing rolling loop technique, material profit With rate and low production efficiency, easily forging flow lines is damaged in follow-up machining, and mounting tool is not in milling ring technological process Flexibly, frock consumption is big.
The content of the invention
The technical problems to be solved by the invention are the defects for overcoming prior art, there is provided in a kind of steep-taper wind power bearing The looping mill rolling technique of circle profiling shaping, drastically increases the utilization rate of raw material, reduces the cost of gas consumption and following process, And forging flow lines is not destroyed in follow-up machining, mould flexibility is high, realize one set of die rolling Multiple Type forging Effect, reduce frock cost.
The present invention solves above-mentioned technical problem and adopts the technical scheme that:A kind of steep-taper wind power bearing inner ring profiling shaping Looping mill rolling technique, comprise the technical steps that:
(1) check:Material and presentation quality to raw material are tested.
(2) blank:By the qualified bar stock saw cutting of inspection in step (1) into section on sawing machine, and to the material after cutting Duan Jinhang presentation qualities are checked, wherein the thickest of material section is D.
(3) heat:The material section obtained to step (2) in heat accumulating type forge furnace carries out heating and thermal insulation.
(4) profiling base is made:Material section after heating and thermal insulation is placed with press blanking mold, upsetting is carried out in press station Slightly, punching and end face are smooth, are made looping mill rolling profiling blank.
(5) profiling looping mill rolling:Looping mill rolling profiling blank is transferred to vertical ring rolling machine station, work of the looping mill rolling profiling blank in core roller Gradually fitted with inner ring Vertical Combination mould under and start rolling deformation, under the collective effect of home roll frock and core roller, ring Profiling blank is rolled plastic deformation occurs and moulds of industrial equipment are constantly filled, when looping mill rolling profiling blank external diameter reaches pre-set dimension, ring Operation is rolled to complete.
(6) full circle scale:Semi-finished product to being obtained by step (5) carry out full circle scale, obtain the good forging of behavior tolerance Part.
(7) forging process detection:Forging to being obtained by step (6) carries out process detection.
(8) it is heat-treated:Qualified semi-finished product to being obtained by process detection are heat-treated.
(9) performance test:Semi-finished product after heat treatment are dissected, performance survey then is carried out to the semi-finished product dissected Examination.
(10) machine:Qualified semi-finished product to being obtained by performance test are machined out, excision remainder punching.
(11) hardness test:To carrying out hardness test by the semi-finished product after machining.
(12) examine eventually, identify and pack:Semi-finished product to reaching hardness test requirement carry out whole inspection, mark and packaging, obtain Obtain wind power bearing inner ring.
In step (1), inspection material needs to meet product drawing or code requirement, raw material surface flawless, folding Or wedge angle boss, it is to avoid follow-up forging produces defect.
In step (3), heating-up temperature is 1000 DEG C~1200 DEG C, and soaking time is D* (0.3min/mm~0.8min/ mm)。
In step (8), it is spheroidizing conditioning treatment to be heat-treated, it is therefore an objective to reduce hardness and adjustment is organized, wherein Technology for Heating Processing is:Semi-finished product temperature is heated to≤600 DEG C when carry out shove charge, temperature programming 3h~5h to 800 DEG C~820 DEG C, and 3.5h~5.5h is maintained in this temperature, then it is cooled to 700 DEG C~720 DEG C with the cooling rate stove of 20 DEG C/h~30 DEG C/h, 1.5h~2.5h is kept in this temperature, 650 DEG C of air coolings of coming out of the stove then are cooled to the cooling rate stove of 20 DEG C/h~30 DEG C/h.
In step (9), the specific requirement of performance test is as follows:Globular carbide (CG) 2.2~2.4, pearlite (PA) ≤ 3.0, net carbide (CN)≤4.3,1/3 of decarburized layer deepness less than or equal to unilateral minimum process surplus.
In step (11), hardness requirement≤250HBW.
After employing above-mentioned technical proposal, the present invention has following beneficial effect:The present invention can be greatly enhanced original Stock utilization, reduces gas consumption, meets the trend of forging industry Green Development, while follow-up machining cost is reduced, by Forging flow lines is not destroyed in follow-up machining in profiling forging, end properties, inner ring Vertical Combination mould is greatly improved Flexible design improves the time of assembling mould, and realizes the effect of the multiple model forging of one set of die rolling, greatly Imitation shape piece frock cost is reduced, frock is reduced and is scrapped, improve the utilization rate of mould.
Brief description of the drawings
Fig. 1 is a kind of flow chart of the looping mill rolling technique of steep-taper wind power bearing inner ring profiling shaping of the invention;
Fig. 2 be a kind of looping mill rolling technique of steep-taper wind power bearing inner ring profiling shaping of the invention embodiment 1 in profiling The profile of the semi-finished product after looping mill rolling;
Fig. 3 be a kind of looping mill rolling technique of steep-taper wind power bearing inner ring profiling shaping of the invention embodiment 2 in profiling The profile of the semi-finished product after looping mill rolling;
In figure:1. check, 2. blank, 3. press blanking mold, 4. jumping-up, 5. punching, 6. looping mill rolling profiling blank, 7. inner ring Vertical Combination mould, 8. semi-finished product after profiling looping mill rolling.
Specific embodiment
In order that present disclosure is easier to be clearly understood, it is right below according to specific embodiment and with reference to accompanying drawing The present invention is described in further detail.
As Figure 1-3, a kind of embodiment of the looping mill rolling technique of steep-taper wind power bearing inner ring profiling shaping is as follows:
Embodiment 1:The specification of imitation shape piece is the Ф 382 (see Fig. 2) of Ф 1234* Ф 1054, is mainly included the following steps that:
(1) 1 is checked:Material and presentation quality to raw material are tested, and bar specification is Ф 360.
(2) blank 2:By the qualified bar stock saw cutting of inspection in step (1) into section on sawing machine, and to the material after cutting Duan Jinhang presentation qualities are checked, wherein the thickest of material section is D=360mm.
(3) heat:The material section obtained to step (2) in heat accumulating type forge furnace carries out heating and thermal insulation, and heating-up temperature is 1079 DEG C, soaking time is 160min.
(4) profiling base is made:Material section after heating and thermal insulation is placed with press blanking mold 3, is carried out in press station Jumping-up 4, punching 5 and end face are smooth, are made looping mill rolling profiling blank 6.
(5) profiling looping mill rolling:Looping mill rolling profiling blank 6 is transferred to vertical ring rolling machine station, looping mill rolling profiling blank 6 is in core roller Gradually fitted with inner ring Vertical Combination mould 7 under effect and start rolling deformation, under the collective effect of home roll frock and core roller, There is plastic deformation and constantly fill moulds of industrial equipment in looping mill rolling profiling blank 6, when the external diameter of looping mill rolling profiling blank 6 reaches pre-set dimension When, looping mill rolling operation is completed.
(6) full circle scale:Semi-finished product to being obtained by step (5) carry out full circle scale, obtain the good forging of behavior tolerance Part, its size is outside dimension 1234+/- 6mm, internal diameter size 1054+/- 6mm, height dimension 382+/- 6mm.
(7) forging process detection:Forging to being obtained by step (6) carries out process detection.
(8) it is heat-treated:Qualified semi-finished product to being obtained by process detection are heat-treated, and wherein Technology for Heating Processing is: Semi-finished product temperature is heated to≤600 DEG C when carry out shove charge, temperature programming 3h to 805 DEG C, and this temperature maintain 5.5h+/- 0.5h, then it is cooled to 720 DEG C with the cooling rate stove of 20-30 DEG C/h, 2h+/- 0.5h is kept in this temperature, then with 20-30 DEG C/h Cooling rate stove be cooled to 650 DEG C of air coolings of coming out of the stove.
(9) performance test:Semi-finished product after heat treatment are dissected, performance survey then is carried out to the semi-finished product dissected Try, its performance parameter is:Globular carbide (CG) 2.3, pearlite (PA) 3.0, net carbide (CN)≤4.0, decarburization layer depth Degree 0.34mm.
(10) machine:Qualified semi-finished product to being obtained by performance test are machined out, excision remainder punching.
(11) hardness test:To carrying out hardness test by the semi-finished product after machining, its hardness is 207HBW.
(12) examine eventually, identify and pack:Semi-finished product to reaching hardness test requirement carry out whole inspection, mark and packaging, obtain Obtain wind power bearing inner ring.
Embodiment 2:The specification of imitation shape piece is the Ф 336 (see Fig. 3) of Ф 1235* Ф 1103.5, is mainly included the following steps that:
(1) 1 is checked:Material and presentation quality to raw material are tested, and bar specification is Ф 360.
(2) blank 2:By the qualified bar stock saw cutting of inspection in step (1) into section on sawing machine, and to the material after cutting Duan Jinhang presentation qualities are checked, wherein the thickest of material section is D=360mm.
(3) heat:The material section obtained to step (2) in heat accumulating type forge furnace carries out heating and thermal insulation, and heating-up temperature is 1079 DEG C, soaking time is 150min.
(4) profiling base is made:Material section after heating and thermal insulation is placed with press blanking mold 3, is carried out in press station Jumping-up 4, punching 5 and end face are smooth, are made looping mill rolling profiling blank 6.
(5) profiling looping mill rolling:Looping mill rolling profiling blank 6 is transferred to vertical ring rolling machine station, looping mill rolling profiling blank 6 is in core roller Gradually fitted with inner ring Vertical Combination mould 7 under effect and start rolling deformation, under the collective effect of home roll frock and core roller, There is plastic deformation and constantly fill moulds of industrial equipment in looping mill rolling profiling blank 6, when the external diameter of looping mill rolling profiling blank 6 reaches pre-set dimension When, looping mill rolling operation is completed.
(6) full circle scale:Semi-finished product to being obtained by step (5) carry out full circle scale, obtain the good forging of behavior tolerance Part, its size is outside dimension 1235+/- 6mm, internal diameter size 1103.5+/- 6mm, height dimension 336+/- 6mm.
(7) forging process detection:Forging to being obtained by step (6) carries out process detection.
(8) it is heat-treated:Qualified semi-finished product to being obtained by process detection are heat-treated, and wherein Technology for Heating Processing is: Semi-finished product temperature is heated to≤600 DEG C when carry out shove charge, temperature programming 3h to 805 DEG C, and this temperature maintain 5.5h+/- 0.5h, then it is cooled to 720 DEG C with the cooling rate stove of 20-30 DEG C/h, 2h+/- 0.5h is kept in this temperature, then with 20-30 DEG C/h Cooling rate stove be cooled to 650 DEG C of air coolings of coming out of the stove.
(9) performance test:Semi-finished product after heat treatment are dissected, performance survey then is carried out to the semi-finished product dissected Try, its performance parameter is:Globular carbide (CG) 2.2, pearlite (PA) 3.0, net carbide (CN)≤4.0, decarburization layer depth Degree 0.37mm.
(10) machine:Qualified semi-finished product to being obtained by performance test are machined out, excision remainder punching.
(11) hardness test:To carrying out hardness test by the semi-finished product after machining, its hardness is 201HBW.
(12) examine eventually, identify and pack:Semi-finished product to reaching hardness test requirement carry out whole inspection, mark and packaging, obtain Obtain wind power bearing inner ring.
Compared with prior art, the present invention can be greatly enhanced utilization rate of raw materials up to 15%~35%, reduce combustion gas Consumption, meets the trend of forging industry Green Development, while follow-up machining cost up to 10%~30% is reduced, due to profiling forging Part does not destroy forging flow lines in follow-up machining, is greatly improved end properties, and inner ring Vertical Combination mold design is flexible Improve the time of assembling mould, and realize the effect of the multiple model forging of one set of die rolling, it is very big to reduce Imitation shape piece frock cost, reduces frock and scraps, and die cost reduces 75%, improves the utilization rate of mould.
Particular embodiments described above, pair present invention solves the technical problem that, technical scheme and beneficial effect carry out Further describe, should be understood that and the foregoing is only specific embodiment of the invention, be not limited to this Invention, all any modification, equivalent substitution and improvements within the spirit and principles in the present invention, done etc., should be included in this hair Within bright protection domain.

Claims (6)

1. the looping mill rolling technique that a kind of steep-taper wind power bearing inner ring profiling shapes, it is characterised in that:Comprise the technical steps that:
(1) check:Material and presentation quality to raw material are tested;
(2) blank:By the qualified bar stock saw cutting of inspection in step (1) into section on sawing machine, and the material section after cutting is entered Row presentation quality is checked, wherein the thickest of material section is D;
(3) heat:The material section obtained to step (2) in heat accumulating type forge furnace carries out heating and thermal insulation;
(4) profiling base is made:By after heating and thermal insulation material section place with press blanking mold in, press station carry out jumping-up, Punching and end face are smooth, are made looping mill rolling profiling blank;
(5) profiling looping mill rolling:Looping mill rolling profiling blank is transferred to vertical ring rolling machine station, looping mill rolling profiling blank is in the presence of core roller Gradually fitted with inner ring Vertical Combination mould and start rolling deformation, under the collective effect of home roll frock and core roller, looping mill rolling is imitated There is plastic deformation and constantly fill moulds of industrial equipment in shape blank, when looping mill rolling profiling blank external diameter reaches pre-set dimension, looping mill rolling behaviour Complete;
(6) full circle scale:Semi-finished product to being obtained by step (5) carry out full circle scale, obtain the good forging of behavior tolerance;
(7) forging process detection:Forging to being obtained by step (6) carries out process detection;
(8) it is heat-treated:Qualified semi-finished product to being obtained by process detection are heat-treated;
(9) performance test:Semi-finished product after heat treatment are dissected, performance test then is carried out to the semi-finished product dissected;
(10) machine:Qualified semi-finished product to being obtained by performance test are machined out, excision remainder punching;
(11) hardness test:To carrying out hardness test by the semi-finished product after machining;
(12) examine eventually, identify and pack:Semi-finished product to reaching hardness test requirement carry out whole inspection, mark and packaging, obtain wind Electric bearing inner race.
2. the looping mill rolling technique that a kind of steep-taper wind power bearing inner ring profiling according to claim 1 shapes, it is characterised in that: Heating-up temperature is 1000 DEG C~1200 DEG C in the step (3), and soaking time is D* (0.3min/mm~0.8min/mm).
3. the looping mill rolling technique that a kind of steep-taper wind power bearing inner ring profiling according to claim 1 shapes, it is characterised in that: Heat treatment in the step (8) is spheroidizing conditioning treatment.
4. the looping mill rolling technique that a kind of steep-taper wind power bearing inner ring profiling according to claim 1 or 3 shapes, its feature exists In:The concrete technology of the heat treatment in the step (8) is as follows:
Semi-finished product temperature is heated to≤600 DEG C when carry out shove charge, temperature programming 3h~5h to 800 DEG C~820 DEG C, and herein Temperature maintains 3.5h~5.5h, then is cooled to 700 DEG C~720 DEG C with the cooling rate stove of 20 DEG C/h~30 DEG C/h, is protected in this temperature 1.5h~2.5h is held, 650 DEG C of air coolings of coming out of the stove then are cooled to the cooling rate stove of 20 DEG C/h~30 DEG C/h.
5. the looping mill rolling technique that a kind of steep-taper wind power bearing inner ring profiling according to claim 1 shapes, it is characterised in that: The specific requirement of performance test is as follows in the step (9):Globular carbide (CG) 2.2~2.4, pearlite (PA)≤3.0, net Shape carbide (CN)≤4.3,1/3 of decarburized layer deepness less than or equal to unilateral minimum process surplus.
6. the looping mill rolling technique that a kind of steep-taper wind power bearing inner ring profiling according to claim 1 shapes, it is characterised in that: Hardness requirement≤250HBW in the step (11).
CN201611198251.0A 2016-12-22 2016-12-22 Ring rolling technology for profiling and shaping large-tapered wind-electricity bearing inner ring Pending CN106695256A (en)

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CN107414425A (en) * 2017-08-03 2017-12-01 常州市双强机械制造有限公司 Wind-powered electricity generation gear ring bearing seamless ring technique
CN109097547A (en) * 2018-09-19 2018-12-28 成都天马铁路轴承有限公司 A kind of forging of railway bearing seal receptacle and rta technique
CN110064901A (en) * 2019-05-24 2019-07-30 新昌县新翔宇轴承有限公司 A kind of bearing processing
CN112475160A (en) * 2020-11-20 2021-03-12 洛阳Lyc轴承有限公司 Device and method for forming and rolling inner sleeve outer diameter raceway of wind power main shaft forging
CN112548501A (en) * 2020-12-08 2021-03-26 哈尔滨轴承集团公司 Angular contact ball bearing outer ring forge piece profiling plate and method for machining outer ring forge piece

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107414425A (en) * 2017-08-03 2017-12-01 常州市双强机械制造有限公司 Wind-powered electricity generation gear ring bearing seamless ring technique
CN109097547A (en) * 2018-09-19 2018-12-28 成都天马铁路轴承有限公司 A kind of forging of railway bearing seal receptacle and rta technique
CN110064901A (en) * 2019-05-24 2019-07-30 新昌县新翔宇轴承有限公司 A kind of bearing processing
CN112475160A (en) * 2020-11-20 2021-03-12 洛阳Lyc轴承有限公司 Device and method for forming and rolling inner sleeve outer diameter raceway of wind power main shaft forging
CN112548501A (en) * 2020-12-08 2021-03-26 哈尔滨轴承集团公司 Angular contact ball bearing outer ring forge piece profiling plate and method for machining outer ring forge piece

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Application publication date: 20170524