CN104475631B - The deep tubular ring blank method for determining size of casting and rolling composite forming - Google Patents
The deep tubular ring blank method for determining size of casting and rolling composite forming Download PDFInfo
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- CN104475631B CN104475631B CN201410629437.1A CN201410629437A CN104475631B CN 104475631 B CN104475631 B CN 104475631B CN 201410629437 A CN201410629437 A CN 201410629437A CN 104475631 B CN104475631 B CN 104475631B
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Abstract
A kind of deep tubular ring blank method for determining size of casting and rolling composite forming, belong to ring and shape design field, it is characterized in that realizing as follows: 1) when only considering before and after the axial rolling in footpath that ring axial height increases, radial thickness is thinning and when enlarged-diameter, according to the outer diameter D of deep tubular ring forging, internal diameter d, radial thickness b and axial height h, it is determined that rolling is than the ratio ξ of K and wall thickness reduction amount and height increase amount；2) again by K=(b0h0)/(bh) and ξ=(b0-b)/(h-h0), obtain blank axial height h0, radial thickness b0；3) last, according to the geometrical relationship D equal to the principle of ring forging volume after rolling and blank dimension of the blank volume before the axial rolling in footpath0=d0+2b0, obtain blank outer diameter D respectively0, internal diameter d0.The present invention produces for the rolling of the deep tubular ring of casting and rolling composite forming, it is possible to determine unique blank dimension accurately, quickly, improve design efficiency, shorten the production cycle, reasonable distribution footpath, axial deflection, it is ensured that properties of product quality.
Description
Technical field
The invention belongs to ring and shape design field, be specifically related to a kind of deep tubular ring blank method for determining size of casting and rolling composite forming.
Background technology
Needed for deep tubular ring, the size of blank mainly designs according to the method that rolling anterior and posterior height is constant at present, cause that the blank axial height designed is bigger, overall dimensions is also bigger, need to cast out large-scale ring base when casting and rolling composite forming deep tubular ring, requirements at the higher level are proposed to equipment, base difficulty, disconnection actual in plant produced.Additionally, some method increases according to axial height before and after the deformation of such ring, radial thickness is thinning and the thinking of enlarged-diameter, only rely only on again volume invariance principle before and after plastic deformation and determine blank dimension so that design process is loaded down with trivial details.In a word, the current deep tubular ring blank method for determining size cycle is long, and during rolling, ring footpath, axial deflection unreasonable distribution, add production cost, reduce production efficiency.
Summary of the invention
It is an object of the invention to provide a kind of deep tubular ring blank method for determining size of casting and rolling composite forming, the shortcoming that prior art exists can be efficiently solved.
The object of the invention is realized in, and it is characterized in that realizing as follows:
(1) when only considering before and after the axial rolling in footpath that ring axial height increases, radial thickness is thinning and when enlarged-diameter, according to the outer diameter D of deep tubular ring forging, internal diameter d, radial thickness b and axial height h, determine the rolling ratio ξ than K and wall thickness reduction amount and height increase amount, it may be assumed that
K=1.03+2.414b+31.55b2-75.65b3(1)
ξ=1.23+13.76b-5.91b2-16.43b3(2)
(2) again by K=(b0h0)/(bh) and ξ=(b0-b)/(h-h0), obtain blank axial height h0, radial thickness b0；
(3) last, according to blank volume before the axial rolling in footpath equal to the principle of ring forging volume after rolling, namelyAnd the geometrical relationship D of blank dimension0=d0+2b0, obtain blank outer diameter D respectively0, internal diameter d0.So far all sizes of casting and rolling composite forming deep tubular ring blank are had determined that: D0、d0、b0And h0。
Advantages of the present invention and have the benefit effect that adopt the present invention method for designing, the value of the rolling value than K and wall thickness reduction amount and the ratio ξ of height increase amount can be quickly determined, the blank dimension designed is less and unique, improve design efficiency, accurately, convenient, reasonable distribution footpath, axial deflection, meet the requirement to final ring high-quality performance, also provides the theoretical foundation of science for the blank dimension design of large deep cylinder shape ring casting and rolling composite forming.The method for designing of the present invention also meets petrochemical industry, the nuclear power field demand to the deep tubular ring such as pressure vessel, hydrogenation reactor.
Accompanying drawing explanation
Fig. 1 is casting and rolling composite forming deep tubular ring forging structural representation.
Fig. 2 is the blahk structure schematic diagram of the deep tubular ring of casting and rolling composite forming.
Detailed description of the invention
As shown in Figure 1, 2, set deep tubular ring forging to be of a size of: outer diameter D=0.60m, internal diameter d=0.48m, radial thickness b=0.06m, axial height h=0.10m.
1. determine that rolling is than K by formula (1):
K=1.03+2.414b+31.55b2-75.65b3(1)
B=0.06m is substituted into above formula, draws K=1.27.
2. the ratio ξ of wall thickness reduction amount and height increase amount is determined by formula (2):
ξ=1.23+13.76b-5.91b2-16.43b3(2)
B=0.06m is substituted into above formula, draws ξ=2.03.
3. again by K=(b0h0)/(bh) and ξ=(b0-b)/(h-h0), obtain blank axial height h0=0.0855m, radial thickness b0=0.089m；
4. last, according to blank volume before the axial rolling in footpath equal to the principle of ring forging volume after rolling, namelyAnd the geometrical relationship D of blank dimension0=d0+2b0, obtain blank outer diameter D respectively0=0.508m, internal diameter d0=0.33m.
Claims (1)
1. the deep tubular ring blank method for determining size of casting and rolling composite forming, it is characterised in that realize as follows:
(1) when only considering before and after the axial rolling in footpath that ring axial height increases, radial thickness is thinning and when enlarged-diameter, according to the outer diameter D of deep tubular ring forging, internal diameter d, radial thickness b and axial height h, determine the rolling ratio ξ than K and wall thickness reduction amount and height increase amount, it may be assumed that
K=1.03+2.414b+31.55b2-75.65b3(1)
ξ=1.23+13.76b-5.91b2-16.43b3(2)
(2) again by K=(b0h0)/(bh) and ξ=(b0-b)/(h-h0), obtain blank axial height h0, radial thickness b0；
(3) last, according to blank volume before the axial rolling in footpath equal to the principle of ring forging volume after rolling, namelyAnd the geometrical relationship D of blank dimension0=d0+2b0, obtain blank outer diameter D respectively0, internal diameter d0, so far have determined that all sizes of casting and rolling composite forming deep tubular ring blank: D0、d0、b0And h0。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410629437.1A CN104475631B (en) | 2014-11-10 | 2014-11-10 | The deep tubular ring blank method for determining size of casting and rolling composite forming |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410629437.1A CN104475631B (en) | 2014-11-10 | 2014-11-10 | The deep tubular ring blank method for determining size of casting and rolling composite forming |
Publications (2)
| Publication Number | Publication Date |
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| CN104475631A CN104475631A (en) | 2015-04-01 |
| CN104475631B true CN104475631B (en) | 2016-06-29 |
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| CN201410629437.1A Expired - Fee Related CN104475631B (en) | 2014-11-10 | 2014-11-10 | The deep tubular ring blank method for determining size of casting and rolling composite forming |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105215239B (en) * | 2015-09-23 | 2017-07-25 | 太原科技大学 | A kind of design method of the oblique endoporus ring rolling blank dimension of groove |
| CN106475499A (en) * | 2016-12-30 | 2017-03-08 | 西南铝业（集团）有限责任公司 | A kind of ring rolling method |
| CN106734786A (en) * | 2016-12-30 | 2017-05-31 | 西南铝业（集团）有限责任公司 | A kind of method of high-magnesium aluminum alloy ring rolling |
| CN109977561B (en) * | 2019-03-29 | 2022-03-11 | 太原科技大学 | Design method for rolling blank size of asymmetric double-step ring piece |
| CN113680938B (en) * | 2021-08-19 | 2022-11-29 | 上海理工大学 | Design method of rotary swaging radial forming blank |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP3627654B2 (en) * | 2001-01-09 | 2005-03-09 | Ｊｆｅスチール株式会社 | Rolling method and control device for ring-shaped material to be rolled by ring rolling mill |
| CN101176903B (en) * | 2007-09-06 | 2010-05-19 | 刘岷 | Processing method of enlarging cold-rolling of inside and outside spherical surface ferrule piece as well as device thereof |
| CN101829686B (en) * | 2010-05-06 | 2011-08-17 | 西北工业大学 | Method for determining dimensions of ring radially-axially rolled blank |
| CN102886473B (en) * | 2012-08-31 | 2014-06-18 | 太原科技大学 | Method for determining dimension of ring casting-rolling combined formed blank |
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Granted publication date: 20160629 Termination date: 20161110 |