JPH02294454A - Manufacture of forging made of al alloy - Google Patents
Manufacture of forging made of al alloyInfo
- Publication number
- JPH02294454A JPH02294454A JP11653789A JP11653789A JPH02294454A JP H02294454 A JPH02294454 A JP H02294454A JP 11653789 A JP11653789 A JP 11653789A JP 11653789 A JP11653789 A JP 11653789A JP H02294454 A JPH02294454 A JP H02294454A
- Authority
- JP
- Japan
- Prior art keywords
- forging
- alloy
- treatment
- forged
- solution treatment
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000005242 forging Methods 0.000 title claims abstract description 26
- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 15
- 238000004519 manufacturing process Methods 0.000 title claims description 12
- 230000032683 aging Effects 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims description 25
- 238000000034 method Methods 0.000 claims description 14
- 229910045601 alloy Inorganic materials 0.000 claims description 13
- 239000000956 alloy Substances 0.000 claims description 13
- 238000010438 heat treatment Methods 0.000 abstract description 23
- 150000001875 compounds Chemical class 0.000 abstract description 10
- 230000005496 eutectics Effects 0.000 abstract description 6
- 239000002184 metal Substances 0.000 description 14
- 229910052751 metal Inorganic materials 0.000 description 14
- 238000005266 casting Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910001132 Ar alloy Inorganic materials 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 229910000861 Mg alloy Inorganic materials 0.000 description 1
- 229910018594 Si-Cu Inorganic materials 0.000 description 1
- 229910008465 Si—Cu Inorganic materials 0.000 description 1
- 239000010953 base metal Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000005480 shot peening Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
Landscapes
- Forging (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、所定形状に鋳造されたＡｌ合金製鍛造素材を
鍛造することにより鍛造品を製造する方法の改良に関し
、特に品質向上対策および生産効率アップ化対策に関す
る。Detailed Description of the Invention (Field of Industrial Application) The present invention relates to an improvement in a method for manufacturing a forged product by forging an Al alloy forged material cast into a predetermined shape, and in particular to improvements in quality improvement measures and production. Regarding measures to improve efficiency.
（従来の技術）
一般に、Ａｌ −Ｓ ｉ −Ｃ ｕ系合金やＡｐ−Ｓｔ
− Ｃ ｕ −Ｍ ｇ系合金等は、鋳造性が良く、かつ
熱処理を施すことにより優れた強度および靭性等が得ら
れることから、自動車等車両用エンジン部品としてのロ
ツカアーム等の鋳造用合金として従来より広く用いられ
ている。しかし、エンジンの高出力化が叫ばれている今
日、上記口ッカアーム等は運転中に苛酷な条件に晒され
ることから、上記強度および靭性等の機械的性質の向上
がさらに要求される。そこで、この要求を満たすべく、
例えば特開昭６２−１８７５３９号公報に開示されてい
るように、上述の如きｋｌ −Ｓ ｉ −Ｃ ｕ系合金
等で鍛造素材を鋳造し、次いで、この鍛造素材を鍛造す
ることにより、機械的性質の向上を図るようにする方法
が知られている。(Prior art) Generally, Al-Si-Cu alloys and Ap-St
- Cu -Mg alloys have good castability and can obtain excellent strength and toughness through heat treatment, so they have traditionally been used as alloys for casting Rotsuka arms and other engine parts for automobiles and other vehicles. more widely used. However, in today's world where there is a demand for higher engine output, the mouth arm and the like are exposed to severe conditions during operation, so there is a further demand for improved mechanical properties such as the strength and toughness. Therefore, in order to meet this demand,
For example, as disclosed in JP-A-62-187539, a forged material is cast from the above kl-S i -Cu alloy, etc., and then this forged material is forged. Methods are known to improve properties.
（発明が解決しようとする課題）
ところで、通常、Ａｌｌ合金製鍛造素材をブランク材と
して用いて鍛造品を製造する場合、まず、鋳造された鍛
造素材を例えば約４５０℃に加熱保持した状態で鍛造し
、次いで、この鍛造された鍛造品に約５００℃の加熱条
件の下で４時間保持して水冷する溶体化処理と、その後
に例えば約１６０℃の加熱条件の下で６時間保持して空
冷する時効処理とからなるいわゆるＴ６処理と称せられ
る熱処理を施すことが行われる。このように、Ｔ６処理
を施すのは、鋳造により金属組織中に晶出した共晶Ｓｉ
の針状化合物を分断して球状化させることにより、金属
組織の機械的性質を向上させるためである。(Problems to be Solved by the Invention) Generally, when producing a forged product using an Al alloy forged material as a blank material, first, the cast forged material is heated and held at, for example, about 450° C. and then forged. Then, this forged forged product is subjected to a solution treatment in which the forged product is held for 4 hours under heating conditions of about 500°C and cooled in water, and then, for example, is held under heating conditions of about 160°C for 6 hours and cooled in air. A heat treatment called a so-called T6 treatment consisting of an aging treatment is performed. In this way, the T6 treatment is applied to the eutectic Si crystallized in the metal structure during casting.
This is to improve the mechanical properties of the metal structure by dividing the acicular compound and making it spheroidal.
しかし、上記鋳造された鍛造素材の金属組織中に晶出し
ている共晶Ｓｉ化合物は、針状でかつ偏析しており、し
かも鍛造に供するための加熱時間が比較的短いこともあ
って、この加熱によっては分断され難く、このため、こ
の針状化合物が鍛造時に起点となってクラックが発生す
るという問題があった。However, the eutectic Si compound crystallized in the metal structure of the cast forging material is acicular and segregated, and the heating time for forging is relatively short. It is difficult to separate by heating, and for this reason, there is a problem in that this acicular compound becomes a starting point during forging and causes cracks.
一方、上記鍛造された鍛造品は、その後、溶体化処理工
程に搬入されるが、一般には、作業性等を考慮して鍛造
個数が所定の個数に達した段階で一纏めにして溶体化処
理工程に搬入される。このように、鍛造とその後に行わ
れる溶体化処理等の熱処理とは、別工程として完全に切
り離されているのが現状である。したがって、溶体化処
理工程に搬入される鍛造品はその間に冷えていることか
ら、溶体化温度に達するように再度昇湿させる必要があ
り、このため、生産効率が悪くかつ多大なる熱エネルギ
を必要とするという問題があった。On the other hand, the above-forged forged products are then carried into the solution treatment process, but in general, when the number of forged products reaches a predetermined number in consideration of workability, etc., they are collectively processed into the solution treatment process. will be transported to. As described above, at present, forging and subsequent heat treatment such as solution treatment are completely separated as separate processes. Therefore, since the forged product transported to the solution treatment process has cooled during that time, it is necessary to raise the humidity again to reach the solution temperature, which results in poor production efficiency and requires a large amount of thermal energy. There was a problem.
本発明はかかる点に鑑みてなされたものであり、その目
的とするところは、従来より踏襲されている熱処理工程
を一部変えることにより、鋳造されたＡｊ？合金製鍛造
素材の金属組織中に晶出している共晶Ｓｉの針状化合物
を鍛造前段階で速やかに完全に分断させて球状化させ、
かつその偏折をなくして金属組織中に一様に分散させ、
これによりクラックの発生しない品質の優れたＡＲ合金
製鍛造品を得んとすることにある。さらには、熱処理時
間を大幅に短縮して生産の効率アップ化および省エネ化
を達成せんとすることにある。The present invention has been made in view of these points, and its purpose is to produce cast Aj? The acicular compound of eutectic Si crystallized in the metal structure of the alloy forged material is quickly and completely divided into spheroids in the pre-forging stage.
and eliminates its polarization and uniformly disperses it in the metal structure,
As a result, the object is to obtain an AR alloy forged product with excellent quality and no cracks. Furthermore, it is an object of the present invention to significantly shorten the heat treatment time to improve production efficiency and save energy.
（課題を解決するための手段）
上記の目的を達成するため、本発明の解決手段は、所定
形状に鋳造されたＡｌ合金製鍛造素材を鍛造することに
より鍛造品を製造する方法として、まず、上記Ａｌ合金
製鍛造素材に溶体化処理を施す。次いで、この溶体化処
理後のＡｌ合金製鍛造素材を鍛造した後、この鍛造され
た鍛造品に時効処理を施すようにする。(Means for Solving the Problems) In order to achieve the above object, the solving means of the present invention first provides a method for manufacturing a forged product by forging an Al alloy forged material cast into a predetermined shape. Solution treatment is applied to the Al alloy forged material. Next, after the solution-treated Al alloy forged material is forged, the forged product is subjected to an aging treatment.
（作用）
上記の構成により、本発明方法では、鍛造に供せられる
ＡＪ７合金製鍛造素材は溶体化処理が施されたのち鍛造
されることから、鍛造前の金属組織中に晶出している共
晶Ｓｔの針状化合物は、溶体化処理により長時間に亘っ
て高温雰囲気中に晒されることにより、速やかに完全に
分断されて球状化せしめられ、かつ偏析することなく金
属組織中に一様に分散せしめられ、これにより針状化合
物の不完全なる分断に起因するクラックの発生がなくさ
れ、品質の優れたＡｌ合金製鍛造品が得られることとな
る。(Function) With the above configuration, in the method of the present invention, the AJ7 alloy forged material to be forged is forged after being subjected to solution treatment, so that the forged material that is crystallized in the metal structure before forging is The acicular compound of crystal St is exposed to a high temperature atmosphere for a long period of time through solution treatment, so that it is quickly and completely divided into spheroids, and is uniformly distributed in the metal structure without segregation. This eliminates the occurrence of cracks due to incomplete fragmentation of the acicular compound, resulting in an Al alloy forged product of excellent quality.
さらには、上述の如＜Ａｌ合金製鍛造素材に溶体化処理
が施されることから、鍛造に供するための加熱処理が溶
体化処理によって肩代わりされ、よって上記加熱処理を
別途に施す必要がなくされて１回昇温させるだけでよく
、これに起り熱処理時間が大幅に短縮されて生産の効率
アップ化および省エネ化が達成されることとなる。Furthermore, since the Al alloy forged material is subjected to solution treatment as described above, the heat treatment for forging is taken over by the solution treatment, thus eliminating the need to separately perform the above heat treatment. It is only necessary to raise the temperature once, and as a result, the heat treatment time is significantly shortened, and production efficiency and energy savings are achieved.
（実施例）
以下、本発明の実施例に係るＡｐ合金製鍛造品製造方法
を図面に基づいて説明する。(Example) Hereinafter, a method for manufacturing an Ap alloy forged product according to an example of the present invention will be described based on the drawings.
まず、Ｃｕ：２，５ｗｔ％、Ｓｉ：１０．Ｏｗｔ％、Ｍ
ｇ：０．７ｗｔ％、Ｆｅ：０．３ｗｔ％、Ｍｎ：０．３
ｗｔ％、残部がＡｌおよび上記各元素以外の不可避的不
純物からなるＡ１１合金の地金を用意する。次いで、こ
の地金を溶解した後、脱滓や脱ガス等を目的とした溶湯
処理を行う。その後、例えば７１０℃に設定された溶湯
を鋳型に注入してブランク材としてのＡｌ合金製鍛造素
材を所定形状に鋳造する。First, Cu: 2.5 wt%, Si: 10. Owt%, M
g: 0.7wt%, Fe: 0.3wt%, Mn: 0.3
An A11 alloy base metal is prepared in which the balance is Al and unavoidable impurities other than the above-mentioned elements. Next, after melting this ingot, the molten metal is processed for purposes such as slag removal and degassing. Thereafter, a molten metal set at, for example, 710° C. is poured into a mold to cast an Al alloy forged material as a blank into a predetermined shape.
その後、この鋳造された鍛造素材を鋳型内に溶湯を注入
する堰と切断分離したのち熱処理炉に搬入し、例えば約
５００℃の加熱雰囲気中で４時間保持したのち水冷する
＋７６処理の第１段熱処理である溶体化処理を施す。Thereafter, this cast forged material is cut and separated from the weir for injecting the molten metal into the mold, and then transported to a heat treatment furnace, held for 4 hours in a heated atmosphere of approximately 500°C, and then cooled with water in the first stage of +76 treatment. Solution treatment, which is heat treatment, is applied.
しかる後、この溶体化処理後の鍛造素材を型温１５０℃
に設定された鍛造装置に搬入し、そのグイとパンチとで
１５分間に亘って圧縮して塑性変形させることにより、
鍛造品を得る。After that, the forged material after solution treatment is heated to a mold temperature of 150℃.
By transporting the material into a forging device set to
Obtain a forged item.
次いで、この得られた鍛造品を所定の熱処理条件の下で
焼入れしたのち熱処理炉に搬入し、約１６０℃の加熱雰
囲気中で６時間保持したのち空冷する，Ｔ６処理の第２
段熱処理である時効処理を施す。Next, the obtained forged product is quenched under predetermined heat treatment conditions, then carried into a heat treatment furnace, held in a heated atmosphere of about 160°C for 6 hours, and then air cooled.
Aging treatment, which is a stage heat treatment, is performed.
その後、上記鍛造品に形成されているフラッシュ（パリ
）をトリム型で除去した後、このフラッシュを除去した
鍛造品をショットピーニング工程で表面の研掃を行い、
鍛造作業を終了する。After that, the flash formed on the forged product is removed using a trim die, and the surface of the forged product from which the flash has been removed is polished using a shot peening process.
Finish the forging work.
そして、このようにして得られたＡ，９合金製鍛造品は
、クラックの発生していない品質の優れたものとなって
いた。このように、ＡΩ合金製鍛造品にクラックが発生
しなかったのは、鋳造によりＡｐ合金製鍛造素材の金属
組織中に晶出している共晶Ｓｉの針状化合物が、溶体化
処理によって長時間に亘って高温雰囲気中に晒されるこ
とにより、速やかに完全に分断して球状化し、がっ偏折
することなく金属組織中に一様に分散していることによ
るものである。The thus obtained A,9 alloy forged product was of excellent quality and had no cracks. In this way, the reason why cracks did not occur in the AΩ alloy forged product is that the acicular compound of eutectic Si that crystallizes in the metal structure of the Ap alloy forged material during casting is caused by the solution treatment for a long time. This is because by being exposed to a high-temperature atmosphere for a long period of time, the particles are quickly and completely divided into spheres, and are uniformly dispersed in the metal structure without being polarized.
さらに、本発明方法では、ＡΩ合金製鍛造素材を溶体化
処理後に鍛造することから、この溶体化処理が鍛造に供
するための加熱処理をも兼ねることとなり、よって上記
加熱処理を別途に施す必要をなくして１回昇温させるだ
けでよく、これにより熱処理時間を大幅に短縮して生産
の効率アップ化および省エネ化を達成することができる
。Furthermore, in the method of the present invention, since the AΩ alloy forged material is forged after solution treatment, this solution treatment also serves as heat treatment for forging, and therefore it is not necessary to separately perform the above heat treatment. It is only necessary to raise the temperature once, thereby significantly shortening the heat treatment time and achieving increased production efficiency and energy savings.
（発明の効果）
以上説明したように、本発明方法によれば、所定形状に
鋳造された１合金製鍛造素材に溶体化処理を施した後、
この溶体化処理後のＡｌ合金製鍛造素材を鍛造するので
、鍛造前の金属組織中に晶出している共晶Ｓｉの針状化
合物を溶体化処理により球状化させ、かつ金属組織中に
一様に分散させ、これによりクラックが発生しない品質
の優れたＡｆＩ合金製鍛造品を得ることができる。さら
には、鍛造に供するための加熱処理を溶体化処理によっ
て肩代わりさせることでな＜シ、これにより熱処理時間
を大幅に短縮して生産の効率アップ化および省エネ化を
達成することができる。(Effects of the Invention) As explained above, according to the method of the present invention, after solution treatment is applied to a single alloy forged material cast into a predetermined shape,
Since the Al alloy forged material after this solution treatment is forged, the eutectic Si needle-like compound crystallized in the metal structure before forging is spheroidized by the solution treatment, and is uniformly formed in the metal structure. As a result, it is possible to obtain a forged product made of AfI alloy with excellent quality and no cracks. Furthermore, by replacing heat treatment for forging with solution treatment, it is possible to significantly shorten heat treatment time and achieve increased production efficiency and energy savings.
Claims (1)
することにより鍛造品を製造する方法であって、上記Ａ
ｌ合金製鍛造素材に溶体化処理を施し、次いで、この溶
体化処理後のＡｌ合金製鍛造素材を鍛造した後、この鍛
造された鍛造品に時効処理を施すことを特徴とするＡｌ
合金製鍛造品の製造方法。(1) A method for manufacturing a forged product by forging an Al alloy forged material cast into a predetermined shape, the method comprising:
Al alloy forging material is subjected to solution treatment, and then, after the solution treatment treated Al alloy forging material is forged, the forged product is subjected to aging treatment.
Method for manufacturing alloy forgings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11653789A JPH02294454A (en) | 1989-05-09 | 1989-05-09 | Manufacture of forging made of al alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11653789A JPH02294454A (en) | 1989-05-09 | 1989-05-09 | Manufacture of forging made of al alloy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02294454A true JPH02294454A (en) | 1990-12-05 |
Family
ID=14689580
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11653789A Pending JPH02294454A (en) | 1989-05-09 | 1989-05-09 | Manufacture of forging made of al alloy |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02294454A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003527966A (en) * | 1999-12-29 | 2003-09-24 | サン・ジャン・インダストリーズ | An improved method for manufacturing light alloy parts |
| WO2008099651A1 (en) * | 2007-02-13 | 2008-08-21 | Toyota Jidosha Kabushiki Kaisha | Process for producing aluminum alloy material and heat treated aluminum alloy material |
| US8999079B2 (en) | 2010-09-08 | 2015-04-07 | Alcoa, Inc. | 6xxx aluminum alloys, and methods for producing the same |
| JP2015074009A (en) * | 2013-10-08 | 2015-04-20 | Sus株式会社 | Bolt and production method thereof |
| US9587298B2 (en) | 2013-02-19 | 2017-03-07 | Arconic Inc. | Heat treatable aluminum alloys having magnesium and zinc and methods for producing the same |
| US9926620B2 (en) | 2012-03-07 | 2018-03-27 | Arconic Inc. | 2xxx aluminum alloys, and methods for producing the same |
-
1989
- 1989-05-09 JP JP11653789A patent/JPH02294454A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003527966A (en) * | 1999-12-29 | 2003-09-24 | サン・ジャン・インダストリーズ | An improved method for manufacturing light alloy parts |
| JP5025870B2 (en) * | 1999-12-29 | 2012-09-12 | サン・ジャン・インダストリーズ | Improved method for manufacturing light alloy parts |
| WO2008099651A1 (en) * | 2007-02-13 | 2008-08-21 | Toyota Jidosha Kabushiki Kaisha | Process for producing aluminum alloy material and heat treated aluminum alloy material |
| JP2008196009A (en) * | 2007-02-13 | 2008-08-28 | Toyota Motor Corp | Method for manufacturing aluminum alloy material, and heat treatment type aluminum alloy material |
| US8142579B2 (en) | 2007-02-13 | 2012-03-27 | Toyota Jidosha Kabushiki Kaisha | Process for producing aluminum alloy material and heat treated aluminum alloy material |
| US8999079B2 (en) | 2010-09-08 | 2015-04-07 | Alcoa, Inc. | 6xxx aluminum alloys, and methods for producing the same |
| US9194028B2 (en) | 2010-09-08 | 2015-11-24 | Alcoa Inc. | 2xxx aluminum alloys, and methods for producing the same |
| US9249484B2 (en) | 2010-09-08 | 2016-02-02 | Alcoa Inc. | 7XXX aluminum alloys, and methods for producing the same |
| US9359660B2 (en) | 2010-09-08 | 2016-06-07 | Alcoa Inc. | 6XXX aluminum alloys, and methods for producing the same |
| US9926620B2 (en) | 2012-03-07 | 2018-03-27 | Arconic Inc. | 2xxx aluminum alloys, and methods for producing the same |
| US9587298B2 (en) | 2013-02-19 | 2017-03-07 | Arconic Inc. | Heat treatable aluminum alloys having magnesium and zinc and methods for producing the same |
| JP2015074009A (en) * | 2013-10-08 | 2015-04-20 | Sus株式会社 | Bolt and production method thereof |
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