CN109783927A - A kind of streamline determination method being closed taper revolving body aluminum alloy forge piece - Google Patents
A kind of streamline determination method being closed taper revolving body aluminum alloy forge piece Download PDFInfo
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- CN109783927A CN109783927A CN201910022596.8A CN201910022596A CN109783927A CN 109783927 A CN109783927 A CN 109783927A CN 201910022596 A CN201910022596 A CN 201910022596A CN 109783927 A CN109783927 A CN 109783927A
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- aluminum alloy
- revolving body
- forge piece
- grain direction
- body aluminum
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- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000004088 simulation Methods 0.000 claims abstract description 15
- 238000004458 analytical method Methods 0.000 claims abstract description 12
- 238000005242 forging Methods 0.000 claims abstract description 11
- 238000000465 moulding Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Abstract
The invention discloses a kind of streamline determination methods for being closed taper revolving body aluminum alloy forge piece comprising following steps: 1) carrying out the numerical simulation of entire forging and molding according to the technological parameter of semi-closed taper Rotary forging product using DEFORM 2D finite element software；2) in-line analysis is carried out using the Flow Net function of DEFORM simulation softward；Wherein trellis-type selects polygon-type, initial polygonal mesh can one way or another deformation, the fact that with practical as-cast aluminum alloy without obvious grain direction close to；3) the main grain direction in each position is judged according to analog result.The streamline determination method of above-mentioned closure taper revolving body aluminum alloy forge piece can conveniently and efficiently determine the grain direction for being closed taper revolving body aluminum alloy forge piece, have method simple, determine accuracy height and advantage at low cost.
Description
Technical field
The present invention relates to a kind of aluminum alloy forge piece processing technologies, forge more particularly, to a kind of closure taper revolving body aluminium alloy
The streamline determination method of part.
Background technique
Refering to Figure 1, Fig. 1 is the structural schematic diagram of existing semi-closed taper Rotary forging.Currently, using
The semi-closed taper Rotary forging of 7050 Production of casting Al alloys can not judge its grain direction.Because as-cast aluminum alloy does not have
Initial grain direction, during forging and molding, crystal grain axially and it is circumferential have different degrees of deformation, streamline is without rule
Property, therefore the mechanics detection of longitudinal (along grain direction), lateral (vertical grain direction) is taken in the indefinite situation of streamline
The establishment of the ultrasonic inspection technics of sample and workpiece causes puzzlement.
Summary of the invention
The purpose of the present invention is to provide a kind of streamline determination methods for being closed taper revolving body aluminum alloy forge piece, to solve
The problem of closure taper revolving body aluminum alloy forge piece can not judge its grain direction in the prior art.
To achieve this purpose, the present invention adopts the following technical scheme:
A kind of streamline determination method being closed taper revolving body aluminum alloy forge piece comprising following steps:
1) it is carried out using DEFORM 2D finite element software according to the technological parameter of semi-closed taper Rotary forging product whole
The numerical simulation of a forging and molding；
2) in-line analysis is carried out using the Flow Net function of DEFORM simulation softward；Wherein trellis-type selects polygon
Type, initial polygonal mesh can one way or another deformation, the fact that with practical as-cast aluminum alloy without obvious grain direction close to；
3) the main grain direction in each position is judged according to analog result.
Particularly, Flow Net in-line analysis exemplary steps in the step 2) are as follows: a chooses simulation overall process starting point
With final step number, b selects trellis-type, and preview after mesh parameter is arranged in c, and d generates motion pattern.
Particularly, in the step 3) each position grain direction judgment criteria are as follows: if simulation motion pattern on somewhere grid
The deformation deformed in two-dimensional surface is big, then distortion of the mesh direction is corresponding grain direction, if somewhere net on quasi- motion pattern
Deformation of the lattice deformation in two-dimensional surface is small, and according to constancy of volume principle, its deformation direction occurs mainly in circumferential direction, is determined with this
The position grain direction.
Beneficial effects of the present invention are that the streamline of the closure taper revolving body aluminum alloy forge piece is sentenced compared with prior art
The method of determining can conveniently and efficiently determine the grain direction for being closed taper revolving body aluminum alloy forge piece, have method simple, determine
Accuracy height and advantage at low cost.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of existing semi-closed taper Rotary forging；
Fig. 2 is a kind of streamline determination method for being closed taper revolving body aluminum alloy forge piece of the specific embodiment of the invention
The surface chart of the step a of Flow Net in-line analysis；
Fig. 3 is a kind of streamline determination method for being closed taper revolving body aluminum alloy forge piece of the specific embodiment of the invention
The surface chart of the step b of Flow Net in-line analysis；
Fig. 4 is a kind of streamline determination method for being closed taper revolving body aluminum alloy forge piece of the specific embodiment of the invention
The surface chart of mesh parameter is set in the step c of Flow Net in-line analysis；
Fig. 5 is a kind of streamline determination method for being closed taper revolving body aluminum alloy forge piece of the specific embodiment of the invention
The surface chart of preview is generated in the step c of Flow Net in-line analysis；
Fig. 6 is a kind of streamline determination method for being closed taper revolving body aluminum alloy forge piece of the specific embodiment of the invention
The surface chart of the step d of Flow Net in-line analysis.
Specific embodiment
To further illustrate the technical scheme of the present invention below with reference to the accompanying drawings and specific embodiments.
It please refers to shown in Fig. 2 to Fig. 6, in the present embodiment, a kind of streamline judgement being closed taper revolving body aluminum alloy forge piece
Method comprising following steps: 1) using DEFORM 2D finite element software according to the work of semi-closed taper Rotary forging product
Skill parameter carries out the numerical simulation of entire forging and molding；2) streamline point is carried out using the Flow Net function of DEFORM simulation softward
Analysis；Flow Net in-line analysis exemplary steps are as follows: a chooses simulation overall process starting point and final step number, and b selects grid class
Preview after mesh parameter is arranged in type, c, and d generates motion pattern, and wherein trellis-type selects polygon-type, initial polygon latticed
Lattice can one way or another deformation, the fact that with practical as-cast aluminum alloy without obvious grain direction close to；3) sentence according to analog result
Break the main grain direction in each position, from simulation motion pattern it can be seen that from A deformation of the distortion of the mesh in two-dimensional surface it is big, then
Distortion of the mesh direction is corresponding grain direction, and deformation of the distortion of the mesh in two-dimensional surface is small at B, according to constancy of volume original
It manages its deformation direction and occurs mainly in circumferential direction, which is determined with this.
The above embodiments only describe the basic principles and characteristics of the invention, and the invention is not restricted by the above cases,
Without departing from the spirit and scope, the invention also has various changes and changes, and these changes and changes are both fallen within
In scope of the claimed invention.The scope of the present invention is defined by the appended claims and its equivalents.
Claims (3)
1. it is a kind of be closed taper revolving body aluminum alloy forge piece streamline determination method, which is characterized in that itself the following steps are included:
1) it is entirely forged using DEFORM 2D finite element software according to the technological parameter of semi-closed taper Rotary forging product
Cause the numerical simulation of shape；
2) in-line analysis is carried out using the Flow Net function of DEFORM simulation softward；Wherein trellis-type selects polygon class
Type, initial polygonal mesh can one way or another deformation, the fact that with practical as-cast aluminum alloy without obvious grain direction close to；
3) the main grain direction in each position is judged according to analog result.
2. the streamline determination method of closure taper revolving body aluminum alloy forge piece according to claim 1, which is characterized in that institute
State Flow Net in-line analysis exemplary steps in step 2) are as follows: a chooses simulation overall process starting point and final step number, b, selection
Preview after mesh parameter is arranged in trellis-type, c, and d generates simulation motion pattern.
3. the streamline determination method of closure taper revolving body aluminum alloy forge piece according to claim 1, which is characterized in that institute
State the grain direction judgment criteria at each position in step 3) are as follows: if somewhere distortion of the mesh is in two-dimensional surface on simulation motion pattern
Deformation is big, then distortion of the mesh direction is corresponding grain direction, if somewhere distortion of the mesh is in two-dimensional surface on quasi- motion pattern
Deformation it is small, according to constancy of volume principle, its deformation direction occurs mainly in circumferential direction, determines the position grain direction with this.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910022596.8A CN109783927A (en) | 2019-01-10 | 2019-01-10 | A kind of streamline determination method being closed taper revolving body aluminum alloy forge piece |
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| CN201910022596.8A CN109783927A (en) | 2019-01-10 | 2019-01-10 | A kind of streamline determination method being closed taper revolving body aluminum alloy forge piece |
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| CN109783927A true CN109783927A (en) | 2019-05-21 |
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| CN201910022596.8A Pending CN109783927A (en) | 2019-01-10 | 2019-01-10 | A kind of streamline determination method being closed taper revolving body aluminum alloy forge piece |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112364533A (en) * | 2020-07-22 | 2021-02-12 | 国网江西省电力有限公司电力科学研究院 | Forging forming simulation analysis method of aluminum alloy material hardware fitting for power transmission line |
Citations (4)
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| US6487468B1 (en) * | 1998-10-30 | 2002-11-26 | Toyota Jidosha Kabushiki Kaisha | Method for analyzing forging process and medium storing program for executing the method |
| CN101716645A (en) * | 2009-12-22 | 2010-06-02 | 哈尔滨工业大学 | Method for controlling isothermal precision formed forging flow line of complicated disk cake forging |
| CN102744568A (en) * | 2012-06-21 | 2012-10-24 | 西安陕鼓动力股份有限公司 | Bar thick tampering rotating forging bending hot forging process for impeller cover disc of large-scale centrifugal fan |
| CN108977741A (en) * | 2018-06-01 | 2018-12-11 | 燕山大学 | For the prediction technique of titanium alloy die forging part mesh basket Tissue distribution |
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2019
- 2019-01-10 CN CN201910022596.8A patent/CN109783927A/en active Pending
Patent Citations (4)
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| US6487468B1 (en) * | 1998-10-30 | 2002-11-26 | Toyota Jidosha Kabushiki Kaisha | Method for analyzing forging process and medium storing program for executing the method |
| CN101716645A (en) * | 2009-12-22 | 2010-06-02 | 哈尔滨工业大学 | Method for controlling isothermal precision formed forging flow line of complicated disk cake forging |
| CN102744568A (en) * | 2012-06-21 | 2012-10-24 | 西安陕鼓动力股份有限公司 | Bar thick tampering rotating forging bending hot forging process for impeller cover disc of large-scale centrifugal fan |
| CN108977741A (en) * | 2018-06-01 | 2018-12-11 | 燕山大学 | For the prediction technique of titanium alloy die forging part mesh basket Tissue distribution |
Non-Patent Citations (2)
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| 彭柳锋 等: "2A12铝合金锻件成形的有限元模拟", 《矿冶工程》 * |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112364533A (en) * | 2020-07-22 | 2021-02-12 | 国网江西省电力有限公司电力科学研究院 | Forging forming simulation analysis method of aluminum alloy material hardware fitting for power transmission line |
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Application publication date: 20190521 |
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