CN107427898B - Forging method - Google Patents
Forging method Download PDFInfo
- Publication number
- CN107427898B CN107427898B CN201680018694.9A CN201680018694A CN107427898B CN 107427898 B CN107427898 B CN 107427898B CN 201680018694 A CN201680018694 A CN 201680018694A CN 107427898 B CN107427898 B CN 107427898B
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- China
- Prior art keywords
- forging
- workpiece
- warm
- warm forging
- plastic strain
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
-
- 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
-
- 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
-
- 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
- B21K1/76—Making machine elements elements not mentioned in one of the preceding groups
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Forging (AREA)
Abstract
Problem of the present invention is that providing a kind of reduced forging method for making forge piece high intensity and inhibiting the hardness under use environment.Forging method includes: the warm forging process (S105) that warm forging is carried out to the metal workpiece after solution treatment；And after warm forging process (S105), workpiece to be artificially previously applied with the use environment temperature equal extent after manufacture or the temperature more than it artificial aging process (S106) of timeliness.Make the equivalent plastic strain 0.1~2.5 before and after warm forging.
Description
Technical field
The present invention relates to forging methods.
Background technique
In motor vehicle exploitation in recent years, in order to improve fuel availability, the exploitation of light weight and the component of high intensity is not
Disconnected progress.For example, in patent document 1, disclosing to realize the high intensity of forge piece and manufacturing aluminium by warm forging and close
The technology (referring to patent document 1) of the forge piece of gold system.
Citation
Patent document
Patent document 1: Japanese Unexamined Patent Publication 2010-137284 bulletin
Subject to be solved by the invention
However, forge piece has under the use environment of vehicle if directly placing forge piece after the forging under warm
Possible aging, hardness is unstable and changes.
Summary of the invention
Therefore, problem of the present invention is that, a kind of hardness for making forge piece high intensity and inhibiting under use environment is provided
Reduced forging method.
Solution for solving the problem
As the scheme for solving the above subject, the present invention relates to a kind of forging methods characterized by comprising will
Metal workpiece after solution treatment carries out the warm forging process of warm forging below recrystallization temperature；And in the warm forging work
After sequence, when workpiece being artificially previously applied with the use environment temperature equal extent after manufacture or the temperature more than it
The artificial aging process of effect.
Here, warm forging refers to that the temperature recrystallized in the tissue of the state and metal workpiece that are heated (is tied again
Brilliant temperature) below in the state of, using mold come to workpiece carry out forging molding.
According to this structure, by the precipitation strength under artificial aging, forge piece (workpiece) high intensity can be made,
And inhibit firmness change in the use after manufacture simultaneously, therefore the aging of forge piece is less likely to occur.
In addition, in the warm forging process, it is preferred that make the equivalent plastic strain 0.1~2.5 before and after warm forging.
Here, the equivalent plastic strain of forging front and back is for example, by CAE (Ccomputer Aided Engineering) point
Analysis is to calculate.
Moreover, in the warm forging process, it is preferred that make the equivalent plastic strain 0.4~2.1 before and after warm forging.
Invention effect
In accordance with the invention it is possible to provide a kind of forging for making forge piece high intensity and inhibiting the aging under use environment
Method.
Detailed description of the invention
Fig. 1 is the process chart of the forging method of present embodiment.
Fig. 2 is the figure of the drag link of an example of the workpiece in the forging method indicated as present embodiment, and (a) is indicated
It after cutting, (b) indicates after cold forging (preform), after (c) indicating warm forging, (d) indicates after cutting overlap.
Fig. 3 is the microscope photo of the workpiece of equivalent plastic strain 0.42.
Fig. 4 is the microscope photo of the workpiece of equivalent plastic strain 1.39.
Fig. 5 is the microscope photo of the workpiece of equivalent plastic strain 2.07.
Fig. 6 is the microscope photo of the workpiece of equivalent plastic strain 2.66.
Fig. 7 is the chart for indicating an effect of forging method for present embodiment, shows the pass of reduction ratio and elongation
System.
Fig. 8 is the chart for indicating an effect of forging method for present embodiment, shows the pass of strain and tensile strength
System.
Fig. 9 is the chart for indicating an effect of forging method for present embodiment.
Figure 10 is the chart for indicating an effect of forging method for present embodiment, is shown using time and hardness
Relationship.
Figure 11 is the chart for indicating an effect of forging method for comparative example, shows the relationship using time and hardness.
Specific embodiment
Referring to Fig.1~Figure 11, to illustrate one embodiment of the present invention.
As shown in Figure 1, the forging method of present embodiment includes: to carry out molding warm forging work to workpiece 10 by warm forging
Sequence (S105)；Timeliness is artificially previously applied to the workpiece 10 after warm forging, so as to forge piece high intensity and make product in vehicle
The inferior non-ageing artificial aging process (S106) of use environment.Here, exemplifying workpiece 10 is situation made of aluminum alloy.
In addition, here, as shown in Fig. 2, exemplifying workpiece 10 is the substantially rodlike drag link turned to knuckle
The case where, which is to rotate freely by wheel support.Therefore, the workpiece 10 (drag link) of manufacture has outer embedded in steering
The lug boss 11 of the hemispherical shell of the ball-joint of section, the axle portion 12 of the pole shape linked with the bar of actuator side and in protrusion
The neck 13 formed between portion 11 and axle portion 12.
In the workpiece 10, axle portion 12, lug boss 11, neck 13 outer diameter substantially successively become smaller.Also, for they
For equivalent plastic strain, on the basis of the workpiece 10 before straining (before forging), the equivalent plastic strain (0.2 etc.) of axle portion 12,
The equivalent plastic strain (0.9 etc.) of lug boss 11, the equivalent plastic strain (2.2 etc.) of neck 13 successively become larger (referring to Fig. 9).
<cut off operation, S101>
In process S101, cut out appropriately sized workpiece 10 from raw material made of aluminum alloy (referring to Fig. 2 (a)).
<cold forging process, S102>
In process S102, cold forging is carried out to the workpiece 10 cut out and carries out preform (referring to Fig. 2 (b)).Cold forging refers to
Workpiece 10 is forged below the recrystallization temperature of aluminium alloy and under low temperature (such as room temperature (about 25 DEG C) is below).
<solid solution process, S103>
In process S103, solution treatment is carried out to the workpiece 10 after cold forging.Specifically, will using stove appropriate
Workpiece 10 is heated to solid solution temperature (such as 540 DEG C), so that alloying component is solid-solution in workpiece 10 and is easy Precipitation, and
And exclude strain caused by cold forging.
<warm heating process, S104>
In process S104, the workpiece 10 after solution treatment is heated to the warm temperatures for being used to carry out warm forging.Warm adds
Hot temperature is set as room temperature or more and recrystallization temperature or less.Specifically, in the present embodiment, workpiece 10 is aluminium alloy
System, therefore warm heating temperature and be set as such as 100 DEG C~recrystallization temperature or less.
<warm forging process, S105>
In process S105, warm forging is carried out (referring to figure to the workpiece 10 for being heated to warm temperatures (below recrystallization temperature)
2(c))。
In warm forging, the equivalent plastic strain of the workpiece 10 in forging direction (compression direction) is set as 0.1~2.5
Usual range.
This is because when equivalent plastic strain is higher than 2.5, the reason of the tensile strength reduction of the workpiece 10 after manufacture.
The situation is due to passing through a part of structure cell for the dislocation structure that forging generates when equivalent plastic strain is higher than 2.5
(cell) change the reason (referring to Fig. 6) of (process recrystallized).
Here, as shown in figure 8, it is preferred that equivalent plastic strain be 0.1~2.1 as OK range (referring to Fig. 3, Fig. 4,
Fig. 5).Also, it is preferred that equivalent plastic strain is optimum range as 0.4~2.1.This is because tensile strength can be well
Raised reason.
As shown in figure 8, becoming following relationship: when equivalent plastic strain becomes larger, the density of the dislocation in workpiece 10 is gradually
It gets higher, tensile strength is also gradually got higher.
As shown in fig. 7, become when equivalent plastic strain becomes larger, what the elongation (%) of the workpiece 10 after manufacture became smaller
Tendency.It should be noted that the toughness of workpiece 10 is lower when elongation becomes smaller, workpiece 10 becomes fragile.It should be noted that often
The range of the tensile strength of the hot forging for the aluminium alloy seen be about " 285~385MPa, in the present invention, it is known that even if equivalent modeling
Property strain near 0.1, it may have the tensile strength near the upper limit value of the hot forging of common aluminium alloy (referring to Fig. 8).
<artificial aging process, S106>
In process S106, artificial aging is applied to the workpiece 10 after warm forging.Specifically, to provide artificial aging temperature
Timeliness is artificially previously applied to workpiece 10 in degree, regulation artificial aging time, to realize high intensity and make product (workpiece 10)
Not aging in use after fabrication.
It is same that regulation artificial aging temperature is set as the use environment temperature exposed with the product (workpiece 10) after manufacture
Degree or the temperature more than it.This is because thus, it is possible to reduce the aging of the product (workpiece 10) in the use after manufacturing
Reason.For example, in the case that product (workpiece 10) after fabrication is drag link, it is specified that artificial aging temperature be set as 150~
200 DEG C (referring to Fig.1 0).
Regulation artificial aging time first passes through test etc. in advance and finds out, and being set as after fabrication will not be in the range of aging
Time short as far as possible.
<cutting overlap (deflashing) process>
In process S107, the workpiece 10 after artificial aging is carried out to cut overlap (deflashing) (referring to Fig. 2 (d)).Specifically
For, the overlap 14 of the workpiece 10 formed by warm forging is cut off.
<finishing step>
In process S108, finishing processing is carried out to the workpiece 10 after overlap is cut.Specifically, for example to workpiece 10
Surface ground, cleaned.
According to such forging method, artificial aging is applied to workpiece 10 after warm forging, so as to improve workpiece 10
Hardness (referring to Fig. 9).That is, due to being applied with artificial aging to workpiece 10, after fabrication in use, product (workpiece
10) hardness does not change, and will not reduce (referring to Fig.1 0).
In contrast, in the case where not applying artificial aging and directly use after warm forging, there are following situations: producing
Aging occurs in the use of product (workpiece 10), the hardness of product is unstable and changes (comparative example of Fig. 9, referring to Fig.1 1).
More than, one embodiment of the present invention is illustrated, but the present invention is not limited thereto, it can be freely appropriate
Change.
In the above-described embodiment, instantiating workpiece 10 is the structure of component made of aluminum alloy but it is also possible to be other
The structure of the metal of type.
Symbol description:
10 workpiece
11 lug bosses
12 axle portions
13 necks
14 lug bosses
Claims (4)
1. a kind of forging method comprising:
To become have axle portion, lug boss, neck drag link metal workpiece carry out solution treatment and recrystallization temperature
The warm forging process of warm forging is carried out below degree；And
After the warm forging process, with the use environment temperature equal extent after manufacture or the temperature more than it to workpiece people
The artificial aging process of timeliness is previously applied in building site,
The forging method is characterized in that,
In the drag link, the axle portion, the lug boss, the neck section successively become smaller,
In the warm forging process, the side that is successively become larger with the equivalent plastic strain of the axle portion, the lug boss, the neck
Formula is processed.
2. forging method according to claim 1, which is characterized in that
In the warm forging process, make the equivalent plastic strain 0.1~2.5 before and after warm forging.
3. forging method according to claim 1, which is characterized in that
In the warm forging process, make the equivalent plastic strain 0.4~2.1 before and after warm forging.
4. forging method according to any one of claim 1 to 3, which is characterized in that
Before the warm forging process, including cold forging is carried out to the workpiece and carries out preformed cold forging process,
In carrying out the workpiece after preform, the lug boss, the neck, the axle portion section successively become smaller.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015-075685 | 2015-04-02 | ||
| JP2015075685 | 2015-04-02 | ||
| PCT/JP2016/058547 WO2016158462A1 (en) | 2015-04-02 | 2016-03-17 | Forging method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107427898A CN107427898A (en) | 2017-12-01 |
| CN107427898B true CN107427898B (en) | 2019-05-10 |
Family
ID=57004235
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201680018694.9A Active CN107427898B (en) | 2015-04-02 | 2016-03-17 | Forging method |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20180105909A1 (en) |
| JP (1) | JP6371468B2 (en) |
| CN (1) | CN107427898B (en) |
| DE (1) | DE112016001543B4 (en) |
| WO (1) | WO2016158462A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110076523A (en) * | 2019-04-04 | 2019-08-02 | 苏州胜利精密制造科技股份有限公司 | A kind of manufacturing method of laptop case |
| CN114769482A (en) * | 2022-03-01 | 2022-07-22 | 东莞领益精密制造科技有限公司 | Moderate-strength aluminum alloy isothermal die forging process |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104073689A (en) * | 2013-03-29 | 2014-10-01 | 株式会社神户制钢所 | Aluminum alloy forged material for automobile and method for manufacturing the same |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5219176A (en) * | 1989-11-02 | 1993-06-15 | James Mitchell | One-piece steering knuckle assembly |
| US20050111908A1 (en) * | 2003-11-24 | 2005-05-26 | Green Steve J. | Tie rod end |
| EP1911612A1 (en) * | 2006-10-13 | 2008-04-16 | Industria Auxiliar Alavesa, S.A. (Inauxa) | Suspension arm for a motor vehicle wheel suspension |
| JP5082483B2 (en) * | 2007-02-13 | 2012-11-28 | トヨタ自動車株式会社 | Method for producing aluminum alloy material |
| JP5688704B2 (en) * | 2008-11-13 | 2015-03-25 | 株式会社戸畑タ−レット工作所 | Constant temperature forging molding method for aluminum alloy parts and constant temperature forging molding apparatus for aluminum alloy parts |
| KR101423447B1 (en) * | 2010-12-22 | 2014-07-24 | 쇼와 덴코 가부시키가이샤 | Method for producing formed material for brake piston |
| WO2013172912A2 (en) * | 2012-03-07 | 2013-11-21 | Alcoa Inc. | Improved aluminum-lithium alloys, and methods for producing the same |
| JP6099475B2 (en) * | 2013-05-01 | 2017-03-22 | 本田技研工業株式会社 | Al-Mg-Si-based alloy member and manufacturing method thereof |
-
2016
- 2016-03-17 DE DE112016001543.7T patent/DE112016001543B4/en not_active Expired - Fee Related
- 2016-03-17 US US15/562,579 patent/US20180105909A1/en not_active Abandoned
- 2016-03-17 WO PCT/JP2016/058547 patent/WO2016158462A1/en active Application Filing
- 2016-03-17 JP JP2017509555A patent/JP6371468B2/en active Active
- 2016-03-17 CN CN201680018694.9A patent/CN107427898B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104073689A (en) * | 2013-03-29 | 2014-10-01 | 株式会社神户制钢所 | Aluminum alloy forged material for automobile and method for manufacturing the same |
Also Published As
| Publication number | Publication date |
|---|---|
| DE112016001543T5 (en) | 2017-12-21 |
| JPWO2016158462A1 (en) | 2017-11-09 |
| US20180105909A1 (en) | 2018-04-19 |
| CN107427898A (en) | 2017-12-01 |
| JP6371468B2 (en) | 2018-08-08 |
| WO2016158462A1 (en) | 2016-10-06 |
| DE112016001543B4 (en) | 2021-03-11 |
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