CN109201816A - A kind of method and system preparing uniform wall thickness superplastic forming component - Google Patents
A kind of method and system preparing uniform wall thickness superplastic forming component Download PDFInfo
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- CN109201816A CN109201816A CN201710800341.0A CN201710800341A CN109201816A CN 109201816 A CN109201816 A CN 109201816A CN 201710800341 A CN201710800341 A CN 201710800341A CN 109201816 A CN109201816 A CN 109201816A
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- part blank
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C51/00—Measuring, gauging, indicating, counting, or marking devices specially adapted for use in the production or manipulation of material in accordance with subclasses B21B - B21F
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/16—Heating or cooling
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
A method of uniform wall thickness superplastic forming component is prepared, superplastic forming field is related to.The described method includes: part blank to be formed simulation is expanded into simulation part blank；The simulation part blank of expansion and part blank to be formed are subjected to position respective operations；The wall thickness for treating formation of parts blank measures analysis, and carries out surface working process to simulation part blank according to measurement analysis result；The simulation part blank that surface working process is completed carries out superplastic forming processing, obtains standardized element.The invention also provides a kind of systems for preparing uniform wall thickness superplastic forming component.The present invention in advance pre-processes plate different location, prepares the plate blank that different parts have various grain sizes, blank is made to obtain different degrees of wall thickness reduction during superplastic forming, to obtain uniform wall thickness, the complete component of forming.
Description
Technical field
This application involves superplastic forming field more particularly to a kind of method for preparing uniform wall thickness superplastic forming component and it is
System.
Background technique
Superplastic forming technology is the forming that wall thickness reduction occurs using the superplasticity of material and completes component, therefore, wall thickness
It is always the emphasis that is concerned that uniformity, which is thinned, if certain position it is thinned it is serious if be easy to destroy here, cause
Component failure is designed mainly for single layer structure in the prior art, such as increases plate thickness, plate pre-shaping method, backblowing etc..
However, above-mentioned three kinds of methods are for the structure controls Thickness Distribution uniformity such as two layers, four layers and are not suitable for.
Although in addition, the above method can by increase plate thickness can avoid local reduction it is violent, evenness of wall thickness
It is unable to improve；Plate pre-shaping method is first to carry out to plate preforming, keeps the wall thickness reduction of target position and other positions close,
To obtain the component of uniform wall thickness；Backblowing is by controlling on mold design forming process, and plate passes through first
The side contrary to component forming carries out, and carries out component forming again after reaching effect similar with pre-shaping method.However, pre-
The method of forming and backblowing are only applicable to the forming of single layer structure, and the forming of two layers or Multi-layer structure member cannot achieve, from
And it is restricted its use scope.
Summary of the invention
One of to solve above-mentioned technical problem, the present invention provides a kind of sides for preparing uniform wall thickness superplastic forming component
Method, which comprises
Part blank to be formed simulation is expanded into simulation part blank；
The simulation part blank of expansion and part blank to be formed are subjected to position respective operations；
The wall thickness for treating formation of parts blank measures analysis, and carries out table to simulation part blank according to measurement analysis result
Face working process；
The simulation part blank that surface working process is completed carries out superplastic forming processing, obtains standardized element.
Preferably, the method also includes: to simulation part blank carry out surface working process position crystallite dimension into
Row measurement.
Preferably, the wall thickness for treating formation of parts blank measures analysis, and according to measurement analysis result to mould
Quasi- part blank carries out the process of surface working process are as follows: determines that part blank wall thickness to be formed is no more than the position of preset thickness
It sets, the position is corresponding into simulation part blank, position corresponding to the simulation part blank be less than default
The surface working process of number, it is default that the crystallite dimension that the simulation part blank carries out surface working process position is equal to first
Crystallite dimension.
Preferably, the wall thickness for treating formation of parts blank measures analysis, and according to measurement analysis result to mould
Quasi- part blank carries out the process of surface working process are as follows: determine that part blank wall thickness to be formed is more than the position of preset thickness,
The position is corresponding into simulation part blank, position corresponding to the simulation part blank is carried out to be greater than preset times
Surface working process, it is described simulation part blank carry out surface working process position crystallite dimension be equal to the second default crystal grain
Size.
Preferably, the mode of the surface working process includes that mixing yoghurt, rolling and processing or local heat treatmet add
Work.
One of to solve above-mentioned technical problem, the present invention provides it is a kind of prepare uniform wall thickness superplastic forming component be
System, the system comprises: processor and superplastic forming equipment,
The processor is configured with processor-executable instruction to execute operation, and the operation includes:
Part blank to be formed simulation is expanded into simulation part blank, by the simulation part blank of expansion and part hair to be formed
Base carries out position respective operations, and the wall thickness for treating formation of parts blank measures analysis, and according to measurement analysis result to mould
Quasi- part blank carries out surface working process；
The superplastic forming equipment, the simulation part blank for completing to surface working process carry out superplastic forming processing.
Preferably, the processor is configured with processor-executable instruction to execute operation, so that: to simulation part hair
The crystallite dimension that base carries out surface working process position measures.
Preferably, the processor is configured with processor-executable instruction to execute operation, so that:
Determine that part blank wall thickness to be formed is no more than the position of preset thickness, the position is corresponding to simulation part blank
In, the surface working process less than preset times, the simulation part are carried out to position corresponding to the simulation part blank
The crystallite dimension that blank carries out surface working process position is equal to the first default crystallite dimension.
Preferably, the processor is configured with processor-executable instruction to execute operation, so that:
Determine that part blank wall thickness to be formed is more than the position of preset thickness, the position is corresponding into simulation part blank,
Surface working process greater than preset times, the simulation part blank are carried out to position corresponding to the simulation part blank
The crystallite dimension for carrying out surface working process position is equal to the second default crystallite dimension.
Preferably, the mode that described pair of simulation part blank carries out surface working process includes mixing yoghurt, rolling
Processing or local heat treatmet processing.
Beneficial effects of the present invention are as follows:
The present invention is proposed according to the substantial connection of material superplasticity and microstructure, more tiny according to microcosmic crystal grain, identical
Under deformation condition, resistance of deformation is smaller, the better theoretical foundation of superplasticity.Become according to single layer, two layers, four-layer structure different parts
The difference of shape amount, the requirement to the superplastic ability of plate is different, and proposition in advance pre-processes plate different location, and preparation is not
There is the plate blank of various grain sizes with position, so that blank is obtained different degrees of wall thickness during superplastic forming and subtract
It is thin, to obtain uniform wall thickness, the complete component of forming.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present application, constitutes part of this application, this Shen
Illustrative embodiments and their description please are not constituted an undue limitation on the present application for explaining the application.In the accompanying drawings:
Fig. 1 is that there are the structural schematic diagrams in the violent area of wall thickness reduction and the larger area of wall thickness in single layer superplastic forming structure；
Fig. 2 is that there are the structural schematic diagrams in the violent area of wall thickness reduction and the larger area of wall thickness in the double-deck superplastic forming structure；
Fig. 3 is that there are the structural schematic diagrams in the violent area of wall thickness reduction and the larger area of wall thickness in four floor superplastic forming structure；
Fig. 4 is the method flow diagram of preparation uniform wall thickness superplastic forming component described in the embodiment of the present invention；
Fig. 5 is part blank to be formed described in the embodiment of the present invention and the position corresponding relationship for simulating part blank being unfolded
Figure；
Fig. 6 is the schematic illustration for carrying out surface working process described in the embodiment of the present invention to simulation part blank；
Fig. 7 is microstructure signal of the simulation part blank described in the embodiment of the present invention after different passage mixing yoghurts
Figure；
Fig. 8 is the sectional view along A-A of Fig. 7；
Fig. 9 is superplastic forming treated single layer superplastic forming structure described in the embodiment of the present invention；
Figure 10 is treated the double-deck superplastic forming structure of superplastic forming described in the embodiment of the present invention；
Figure 11 is the systematic schematic diagram of preparation uniform wall thickness superplastic forming component described in the embodiment of the present invention.
Specific embodiment
In order to which technical solution in the embodiment of the present application and advantage is more clearly understood, below in conjunction with attached drawing to the application
Exemplary embodiment be described in more detail, it is clear that described embodiment be only the application a part implement
Example, rather than the exhaustion of all embodiments.It should be noted that in the absence of conflict, embodiment and reality in the application
The feature applied in example can be combined with each other.
Fig. 1 to Fig. 3 be followed successively by single layer, in the super modeling structure of two layers and four floor there are the violent area of wall thickness reduction and wall thickness compared with
The structural schematic diagram of great Qu.By traditional increase plate thickness, plate pre-shaping method, backblowing etc. is unable to reach good wall
Thick uniform effect.The present embodiment proposes a kind of method for preparing uniform wall thickness superplastic forming component as a result, as shown in figure 4,
The described method includes:
S101, part blank to be formed simulation is expanded into simulation part blank, and by the simulation part blank of expansion at
Shape part blank carries out position respective operations.
Specifically, part blank to be formed is carried out simulation expansion, accurately determines to be formed zero using specialty analysis software
The corresponding position relationship for the simulation part blank that part blank is unfolded with it.
S102, the wall thickness for treating formation of parts blank measure analysis, and according to measurement analysis result to simulation part
Blank carries out surface working process.
Specifically, in the corresponding position relationship for simulating part blank for being determined that above-mentioned part blank to be formed is unfolded with it
Afterwards, the wall thickness for treating formation of parts blank is measured and is analyzed, so that it is determined that the wall thickness reduction of part blank to be formed is acute out
Strong area and wall thickness reduction are compared with cell, wherein wall thickness subtract win violent area be the position wall thickness be less than preset standard wall thickness,
The part deformation amount of the position is larger；And the wall thickness that wall thickness reduction is then the position compared with cell is greater than preset standard wall thickness, it should
The part deformation amount of position is smaller.
For superplastic forming field, the passage of piece surface working process is more, then the crystallite dimension of the position is then
It is smaller, on the contrary crystallite dimension is then relatively large.Generally for the biggish position of part deformation amount, then wall thickness reduction is more serious, brilliant
Particle size is big, resistance of deformation is high, superplasticity is poor.Therefore, base material is kept in the larger corresponding part blank position of part deformation amount
Crystallite dimension or use less processing passage, reduce it as far as possible during superplastic forming since resistance of deformation is higher
Wall thickness reduction.
And position lesser for part deformation amount, the position crystallite dimension are small, deformation resistance, superplasticity is good.Then exist
The corresponding position of the blank uses the processing compared with multi-pass, the tissue of more small grains is obtained, to make in forming process
Since resistance of deformation is lower, this position is more easily deformed, and wall thickness occurs to be thinned." improve the deformation for deforming big position
Deformation is transferred to and deforms small position by drag ", to obtain uniform wall thickness distribution.
Wherein, the progress of the methods of mixing yoghurt, rolling and processing, local heat treatmet can be used in surface treatment method
Localized micro crystal grain refinement or roughening.
S103, the simulation part blank for completing surface working process carry out superplastic forming processing, obtain standardized element.
Method described in above the present embodiment is suitable for single layer, two layers and four layers of superplasticity structure, below with the super modeling of single layer
For shaped structure, as shown in figure 5, forming blank used is carried out Method of Spreading Design, and determine zero using specialty analysis software
It the violent position of wall thickness reduction (the big position of deflection) and is thinned lesser position (the small position of deflection) in part forming process.It is right
Wall thickness reduction violent area do not use or using less passage mixing yoghurt, and wall thickness reduction is compared with cell then expanded blank
Corresponding position carries out the mixing yoghurt compared with multi-pass, obtains corresponding crystallite dimension, as shown in Figure 6.Wherein, agitating friction
Process passage selection need determined according to the observation analysis to microstructure, as shown in Figure 7 and Figure 8.Sectional view along A-A
In, left side is the region that should become larger, and open grain structure resistance of deformation is big, deformation is relatively small；Right side is strain zonule, and fine grained texture becomes
Shape drag is small, deforms relatively large.The processing of three passages, the processing of two passages and the single pass being corresponding in turn to from left to right in Fig. 8 in Fig. 7
It processes, the rightmost side processes in Fig. 8 for no passage.On surface after the completion of working process, normally super be moulded into is carried out to expanded blank
Shape process completes forming, obtains the single layer superplastic forming structure of uniform wall thickness as shown in Figure 9.Uniform wall thickness two layers surpasses modeling
Shaped structure is as shown in Figure 10.
Corresponding, as shown in figure 11, the present embodiment also proposed a kind of system for preparing uniform wall thickness superplastic forming component,
The system comprises: processor and superplastic forming equipment,
The processor is configured with processor-executable instruction to execute operation, and the operation includes:
Part blank to be formed simulation is expanded into simulation part blank, by the simulation part blank of expansion and part hair to be formed
Base carries out position respective operations, and the wall thickness for treating formation of parts blank measures analysis, and according to measurement analysis result to mould
Quasi- part blank carries out surface working process；
The superplastic forming equipment, the simulation part blank for completing to surface working process carry out superplastic forming processing.
The processor can be the analysis software of profession, and part blank to be formed is carried out simulation expansion, accurate to determine
The corresponding position relationship for the simulation part blank that part blank to be formed is unfolded with it.
After the corresponding position relationship for simulating part blank that above-mentioned part blank to be formed is unfolded with it has been determined, treat
The wall thickness of formation of parts blank is measured and is analyzed, so that it is determined that out the violent area of the wall thickness reduction of part blank to be formed and
Wall thickness reduction is compared with cell, wherein wall thickness subtract win violent area be the position wall thickness be less than preset standard wall thickness, the position
Part deformation amount is larger；And the wall thickness that wall thickness reduction is then the position compared with cell is greater than preset standard wall thickness, the zero of the position
Part deflection is smaller.
For superplastic forming field, the passage of piece surface working process is more, then the crystallite dimension of the position is then
It is smaller, on the contrary crystallite dimension is then relatively large.Generally for the biggish position of part deformation amount, then wall thickness reduction is more serious, brilliant
Particle size is big, resistance of deformation is high, superplasticity is poor.Therefore, base material is kept in the larger corresponding part blank position of part deformation amount
Crystallite dimension or use less processing passage, reduce it as far as possible during superplastic forming since resistance of deformation is higher
Wall thickness reduction.
And position lesser for part deformation amount, the position crystallite dimension are small, deformation resistance, superplasticity is good.Then exist
The corresponding position of the blank uses the processing compared with multi-pass, the tissue of more small grains is obtained, to make in forming process
Since resistance of deformation is lower, this position is more easily deformed, and wall thickness occurs to be thinned." improve the deformation for deforming big position
Deformation is transferred to and deforms small position by drag ", to obtain uniform wall thickness distribution.
Wherein, the progress of the methods of mixing yoghurt, rolling and processing, local heat treatmet can be used in surface treatment method
Localized micro crystal grain refinement or roughening.
On surface after the completion of working process, superplastic forming processing is carried out to simulation part blank, obtains standardized element.
Obviously, those skilled in the art can carry out various modification and variations without departing from the essence of the application to the application
Mind and range.In this way, if these modifications and variations of the application belong to the range of the claim of this application and its equivalent technologies
Within, then the application is also intended to include these modifications and variations.
Claims (10)
1. a kind of method for preparing uniform wall thickness superplastic forming component, which is characterized in that the described method includes:
Part blank to be formed simulation is expanded into simulation part blank；
The simulation part blank of expansion and part blank to be formed are subjected to position respective operations；
The wall thickness for treating formation of parts blank measures analysis, and carries out table to simulation part blank according to measurement analysis result
Face working process；
The simulation part blank that surface working process is completed carries out superplastic forming processing, obtains standardized element.
2. the method according to claim 1, wherein the method also includes: to simulation part blank carry out table
The crystallite dimension of face working process position measures.
3. according to the method described in claim 2, it is characterized in that, the wall thickness for treating formation of parts blank measures point
Analysis, and according to measurement analysis result to the process of simulation part blank progress surface working process are as follows: determine part hair to be formed
Base wall thickness is no more than the position of preset thickness, and the position is corresponding into simulation part blank, to the simulation part blank
Corresponding position carries out the surface working process less than preset times, and the simulation part blank carries out surface working process position
The crystallite dimension set is equal to the first default crystallite dimension.
4. according to the method in claim 2 or 3, which is characterized in that the wall thickness for treating formation of parts blank is surveyed
Amount analysis, and the process that result carries out surface working process to simulation part blank is analyzed according to measurement are as follows: determine to be formed zero
Part blank wall thickness is more than the position of preset thickness, and the position is corresponding into simulation part blank, to the simulation part hair
Position corresponding to base carries out the surface working process greater than preset times, and the simulation part blank carries out surface working process
The crystallite dimension of position is equal to the second default crystallite dimension.
5. according to the described in any item methods of claim 4, which is characterized in that the mode of the surface working process includes stirring
Friction processing, rolling and processing or local heat treatmet processing.
6. a kind of system for preparing uniform wall thickness superplastic forming component, which is characterized in that the system comprises: processor and super modeling
Former,
The processor is configured with processor-executable instruction to execute operation, and the operation includes:
Part blank to be formed simulation is expanded into simulation part blank, by the simulation part blank of expansion and part hair to be formed
Base carries out position respective operations, and the wall thickness for treating formation of parts blank measures analysis, and according to measurement analysis result to mould
Quasi- part blank carries out surface working process；
The superplastic forming equipment, the simulation part blank for completing to surface working process carry out superplastic forming processing.
7. system according to claim 6, which is characterized in that the processor be configured with processor-executable instruction with
Operation is executed, so that: the crystallite dimension for carrying out surface working process position to simulation part blank measures.
8. system according to claim 7, which is characterized in that the processor be configured with processor-executable instruction with
Operation is executed, so that:
Determine that part blank wall thickness to be formed is no more than the position of preset thickness, the position is corresponding to simulation part blank
In, the surface working process less than preset times, the simulation part are carried out to position corresponding to the simulation part blank
The crystallite dimension that blank carries out surface working process position is equal to the first default crystallite dimension.
9. system according to claim 7 or 8, which is characterized in that the processor is configured with the executable finger of processor
It enables to execute operation, so that:
Determine that part blank wall thickness to be formed is more than the position of preset thickness, the position is corresponding into simulation part blank,
Surface working process greater than preset times, the simulation part blank are carried out to position corresponding to the simulation part blank
The crystallite dimension for carrying out surface working process position is equal to the second default crystallite dimension.
10. system according to claim 9, which is characterized in that described pair of simulation part blank carries out surface working process
Mode include mixing yoghurt, rolling and processing or local heat treatmet processing.
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| CN201710800341.0A CN109201816B (en) | 2017-09-07 | 2017-09-07 | Method and system for preparing superplastic forming component with uniform wall thickness |
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| CN113923911A (en) * | 2021-10-15 | 2022-01-11 | Oppo广东移动通信有限公司 | Electronic device, shell and preparation method of shell |
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