JP2007210017A - Forged road wheel made of aluminum alloy, and manufacturing method therefor - Google Patents
Forged road wheel made of aluminum alloy, and manufacturing method therefor Download PDFInfo
- Publication number
- JP2007210017A JP2007210017A JP2006033422A JP2006033422A JP2007210017A JP 2007210017 A JP2007210017 A JP 2007210017A JP 2006033422 A JP2006033422 A JP 2006033422A JP 2006033422 A JP2006033422 A JP 2006033422A JP 2007210017 A JP2007210017 A JP 2007210017A
- Authority
- JP
- Japan
- Prior art keywords
- aluminum alloy
- forged
- road wheel
- temperature
- less
- 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.)
- Granted
Links
- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 47
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 8
- 238000005242 forging Methods 0.000 claims abstract description 34
- 239000013078 crystal Substances 0.000 claims abstract description 18
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 17
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 17
- 229910052802 copper Inorganic materials 0.000 claims abstract description 6
- 238000010438 heat treatment Methods 0.000 claims description 31
- 229910052751 metal Inorganic materials 0.000 claims description 12
- 239000002184 metal Substances 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 11
- 230000032683 aging Effects 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 10
- 238000010791 quenching Methods 0.000 claims description 10
- 230000000171 quenching effect Effects 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 238000009987 spinning Methods 0.000 claims description 8
- 238000005266 casting Methods 0.000 claims description 5
- 238000005520 cutting process Methods 0.000 claims description 5
- 238000000265 homogenisation Methods 0.000 claims description 5
- 238000003754 machining Methods 0.000 claims description 5
- 238000007591 painting process Methods 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 2
- 230000000052 comparative effect Effects 0.000 description 8
- 238000005728 strengthening Methods 0.000 description 7
- 239000000243 solution Substances 0.000 description 5
- 230000007423 decrease Effects 0.000 description 4
- 238000001556 precipitation Methods 0.000 description 4
- 239000006104 solid solution Substances 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 238000007670 refining Methods 0.000 description 3
- 229910019018 Mg 2 Si Inorganic materials 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000013585 weight reducing agent Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000036760 body temperature Effects 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000011089 mechanical engineering Methods 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/86—Optimisation of rolling resistance, e.g. weight reduction
Landscapes
- Forging (AREA)
Abstract
Description
本発明は、ハブ部と、ディスク部と、このディスク部に一体で形成したリム部を備えたアルミニウム合金製鍛造ロードホイール及びその製造方法に関するものである。 The present invention relates to an aluminum alloy forged road wheel including a hub portion, a disc portion, and a rim portion formed integrally with the disc portion, and a method for manufacturing the same.
従来、アルミニウム合金製のロードホイールを製造する場合、低圧鋳造法や、重力鋳造法や、高圧鋳造法や、溶湯鍛造法や、熱間鍛造法が用いられ、これらの製造方法のなかでも、熱間鍛造法が最も優れた機械的性質を得ることができる。
ところが、従来において、上記した熱間鍛造法で製造した鍛造品の機械的性質を前提としてアルミニウム合金製ロードホイールを設計する場合には、現状得られる機械的性質が部品軽量化の妨げとなっており、車両の運動性の観点から見れば、好ましくないという問題を有しており、この問題を解決することが従来の課題となっていた。 However, in the past, when designing an aluminum alloy road wheel on the premise of the mechanical properties of a forged product manufactured by the hot forging method described above, the mechanical properties obtained at present impede weight reduction of parts. From the viewpoint of vehicle mobility, there is a problem that it is not preferable, and it has been a conventional problem to solve this problem.
本発明は、上記した従来の課題に着目してなされたもので、優れた機械的性質を有していてしかも軽量のアルミニウム合金製鍛造ロードホイール及びその製造方法を提供することを目的としている。 The present invention has been made by paying attention to the above-described conventional problems, and has as its object to provide a lightweight aluminum alloy forged road wheel having excellent mechanical properties and a method for producing the same.
本発明は、車軸が装着されるハブ部と、ハブ部の周囲に位置するデザイン面を有するディスク部と、このディスク部の周縁に一体で形成されたリム部を備えたロードホイールにおいて、質量比でＳｉ０．９５〜１．３５％、Ｍｇ０．８〜１．２％、Ｃｕ０．２〜０．５％、Ｍｎ０．４〜０．７％、Ｆｅ０．３％以下及びＣｒ０．０５〜０．２５％を含んで残部をアルミニウムとしたアルミニウム合金を鍛造して成り、ディスク部のデザイン面及びリム部の結晶粒が、粒径５０μｍ以下の金属組織を有している構成としたことを特徴としており、このアルミニウム合金製鍛造ロードホイールの構成を前述した従来の課題を解決するための手段としている。 The present invention relates to a road wheel including a hub portion to which an axle is mounted, a disc portion having a design surface located around the hub portion, and a rim portion integrally formed on the periphery of the disc portion. Si 0.95 to 1.35%, Mg 0.8 to 1.2%, Cu 0.2 to 0.5%, Mn 0.4 to 0.7%, Fe 0.3% or less and Cr 0.05 to 0.25 It is characterized in that it is made by forging an aluminum alloy that contains aluminum and the balance is aluminum, and the design surface of the disk portion and the crystal grains of the rim portion have a metal structure with a particle size of 50 μm or less. The configuration of the aluminum alloy forged road wheel is a means for solving the above-described conventional problems.
本発明のアルミニウム合金製鍛造ロードホイールによれば、上記した構成としているので、優れた機械的性質を有していながら軽量化をも実現することが可能であるという非常に優れた効果がもたらされる。 According to the aluminum alloy forged road wheel of the present invention, since it has the above-described configuration, it has a very excellent effect that it is possible to realize weight reduction while having excellent mechanical properties. .
以下、本発明を更に詳細に説明する。 Hereinafter, the present invention will be described in more detail.
図１に示すように、本発明のアルミニウム合金製鍛造ロードホイール１は、車軸孔２ａを有するハブ部２と、このハブ部２の周囲に位置するデザイン面３を有するディスク部４と、このディスク部４の周縁に一体で形成されたリム部５を備えている。
As shown in FIG. 1, an aluminum alloy forged road wheel 1 according to the present invention includes a
このアルミニウム合金製鍛造ロードホイール１において、リム部５を鍛造後における室温スピニング加工により成形されたものとしてもよく、この構成を採用すると、リム部５をスピニングによりファイバー組織とすることで、リム部５の高い機械的性質を確保し得ることとなる。
In this aluminum alloy forged road wheel 1, the
上記アルミニウム合金製鍛造ロードホイール１に用いるアルミニウム合金は、質量比でＳｉ０．９５〜１．３５％、Ｍｇ０．８〜１．２％、Ｃｕ０．２〜０．５％、Ｍｎ０．４〜０．７％、Ｆｅ０．３％以下及びＣｒ０．０５〜０．２５％を含んで残部をアルミニウムとしている。 The aluminum alloy used in the aluminum alloy forged road wheel 1 is Si 0.95 to 1.35%, Mg 0.8 to 1.2%, Cu 0.2 to 0.5%, and Mn 0.4 to 0.00 by mass ratio. 7%, Fe 0.3% or less and Cr 0.05-0.25%, the balance being aluminum.
上記アルミニウム合金に含有するＳｉは、固溶強化により強度を向上させると共に、Ｍｇとの化合物であるＭｇ２Ｓｉの析出物として強度を向上させる元素であり、含有量が質量比で０．９５％未満の場合は、過剰Ｓｉによる析出形態微細化が得られずに、狙いとする強度を得ることができず、一方、含有量が質量比で１．３５％を超える場合は、靭性及び耐食性が低下するので、Ｓｉの含有量を質量比で０．９５〜１．３５％としている。 Si contained in the aluminum alloy is an element that improves the strength by solid solution strengthening and improves the strength as a precipitate of Mg 2 Si that is a compound with Mg, and its content is 0.95% by mass. If the content is less than 1.35%, it is not possible to obtain a refined precipitation form due to excess Si and the target strength cannot be obtained. On the other hand, if the content exceeds 1.35% by mass, the toughness and corrosion resistance are low. Since it falls, Si content is made into 0.95-1.35% by mass ratio.
上記アルミニウム合金に含有するＭｇは、Ｓｉと同じく強度を向上させる元素であり、含有量が質量比で０．８％未満の場合は、狙いとするＭｇ２Ｓｉの析出量が減少し、一方、含有量が質量比で１．２％を超える場合は、過剰Ｓｉによる 強度の確保が困難になるので、Ｍｇの含有量を質量比で０．８〜１．２％としている。 Mg contained in the aluminum alloy is an element that improves the strength in the same way as Si. When the content is less than 0.8% in terms of mass ratio, the target Mg 2 Si precipitation amount decreases, When the content exceeds 1.2% by mass ratio, it is difficult to ensure the strength by excess Si, so the Mg content is set to 0.8 to 1.2% by mass ratio.
上記アルミニウム合金に添加するＣｕは、固溶強化により強度を向上させる元素であり、添加量が質量比で０．２％未満の場合は、狙いとする強度を得ることができず、一方、添加量が質量比で０．５％を超える場合は、耐食性が低下するので、Ｃｕの添加量を質量比で０．２〜０．５％としている。 Cu added to the aluminum alloy is an element that improves the strength by solid solution strengthening. When the addition amount is less than 0.2% by mass ratio, the target strength cannot be obtained. When the amount exceeds 0.5% by mass ratio, the corrosion resistance decreases, so the addition amount of Cu is set to 0.2 to 0.5% by mass ratio.
上記アルミニウム合金に添加するＭｎは、鍛造時における結晶粒粗大化を抑制して亜結晶組織をもたらす元素であり、添加量が質量比で０．４％未満の場合は、結晶粒が粗大化してしまい、一方、添加量が質量比で０．７％を超える場合は、Ｍｎ化合物が晶出して靭性が低下するので、Ｍｎの添加量を質量比で０．４〜０．７％としている。 Mn added to the aluminum alloy is an element that suppresses the coarsening of crystal grains during forging and produces a subcrystalline structure. When the addition amount is less than 0.4% by mass, the crystal grains are coarsened. On the other hand, when the addition amount exceeds 0.7% by mass ratio, the Mn compound crystallizes and the toughness decreases, so the addition amount of Mn is set to 0.4 to 0.7% by mass ratio.
上記アルミニウム合金に添加するＦｅは、針状晶出物として靭性を低下させるので、添加量が質量比で０．３％を超える場合は、狙いの靭性確保が難しくなることから、Ｆｅの添加量を質量比で０．３％以下としている。 Fe added to the above aluminum alloy reduces toughness as a needle-like crystallized product, so if the added amount exceeds 0.3% by mass ratio, it is difficult to ensure the target toughness. Is 0.3% or less by mass ratio.
上記アルミニウム合金に添加するＣｒは、鍛造素材である鋳造組織を微細化する機能を有する元素であり、添加量が質量比で０．０５％未満の場合は、粗大な鍛造組織となって靭性が低下し、一方、添加量が質量比で０．２５％を超える場合は、鍛造素材を鋳造により製造する際に粗大な晶出物が生成されて靭性の低下を招くので、Ｃｒの添加量を質量比で０．０５〜０．２５％としている。 Cr added to the aluminum alloy is an element having a function of refining a cast structure which is a forging material. When the addition amount is less than 0.05% by mass ratio, it becomes a coarse forged structure and has toughness. On the other hand, if the addition amount exceeds 0.25% by mass ratio, a coarse crystallized product is generated when the forging material is produced by casting, resulting in a decrease in toughness. The mass ratio is 0.05 to 0.25%.
本発明のアルミニウム合金製鍛造ロードホイールにおいて、アルミニウム合金が、鍛造素材である鋳造組織を微細化する機能を有する元素であるＴｉを含んでいる構成とすることができ、この場合、添加量が質量比で０．１％を超える場合は、微細化が進まないので、Ｔｉの添加量を質量比で０．１％以下とすることが望ましい。 In the aluminum alloy forged road wheel of the present invention, the aluminum alloy can be configured to contain Ti which is an element having a function of refining a cast structure which is a forging material. In this case, the addition amount is mass. If the ratio exceeds 0.1%, miniaturization does not proceed, so it is desirable that the amount of Ti added be 0.1% or less by mass ratio.
上記した室温スピニング加工により成形されたリム部５を有するアルミニウム合金製鍛造ロードホイール１を製造するに際しては、まず、ディスク部４の結晶粒を微細化するために、鋳造で製造したアルミニウム合金製の丸棒を切断して得たビレットに対して、大気炉を用いて温度５００〜５６０℃の均質化熱処理を２〜１０時間施すと共に加熱温度５００〜５６０℃で加熱する。
In manufacturing the aluminum alloy forged road wheel 1 having the
次に、上記材料加熱と同様にディスク部４の結晶粒を微細化するのを目的として、油圧式鍛造プレス装置を用いて熱間鍛造を行う。この際、鍛造プレス装置の金型温度が３００℃未満では、鍛造歪が増加して結晶の粗大化を招くことから、金型温度３００℃以上の条件で熱間鍛造を行う。
Next, hot forging is performed using a hydraulic forging press apparatus for the purpose of refining the crystal grains of the
次いで、この鍛造で得たホイール素材に対して室温スピニング加工を行って、高い機械的性質を確保したリム部５を成形する。
Next, room temperature spinning processing is performed on the wheel material obtained by this forging to form the
続いて、上記した固溶強化及び析出強化を促進する強化元素をアルミニウム中に固溶させて、ディスク部４及びリム部５の機械的性質を確保することを目的として、急速加熱炉を用いて溶体化熱処理を行う。このとき、急速加熱炉の雰囲気温度が５４０℃に満たない場合には、狙いとする機械的性質を得ることができず、一方、雰囲気温度が５６０℃を超えている場合には、材料に局部溶解が生じることから、温度５４０〜５６０℃で５〜１８０分の溶体化熱処理を行う。
Subsequently, a rapid heating furnace is used for the purpose of ensuring the mechanical properties of the
そして、実体温度６０℃以下の水焼き入れ及び温度１８０〜２００℃で１．５〜８時間の時効熱処理を順次施した後、機械加工工程及び塗装工程を経てアルミニウム合金製鍛造ロードホイールを得る。 Then, after water quenching at an actual temperature of 60 ° C. or less and aging heat treatment at a temperature of 180 to 200 ° C. for 1.5 to 8 hours in sequence, an aluminum alloy forged road wheel is obtained through a machining process and a painting process.
上記水焼き入れにおいて、６０℃を超えた温度で焼入れを行うと、固溶強化元素が十分に固溶しないので、後工程の時効熱処理で所定の機械的性質が得難くなることから、実体温度を６０℃以下とする。 In the above water quenching, if the quenching is performed at a temperature exceeding 60 ° C., the solid solution strengthening element is not sufficiently dissolved, so that it is difficult to obtain a predetermined mechanical property by an aging heat treatment in a subsequent process. Is 60 ° C. or less.
ここで、水焼き入れが終了して時効熱処理を開始するまでの間、室温で３０分以上放置すると、強化元素であるＭｇ，Ｓｉ元素が単体でクラスターを形成して、後工程の時効熱処理で十分な析出が促進されずに所定の強度が得られなくなる可能性があることから、実体温度６０℃以下の水焼き入れを行った後、室温放置時間が３０分を超えないうちに、大気炉を用いて温度１８０〜２００℃で１．５〜８時間の時効熱処理を施すことが望ましい。 Here, when water quenching is finished and aging heat treatment is started, if left at room temperature for 30 minutes or more, the strengthening elements Mg and Si elements form a single cluster, and the aging heat treatment in the subsequent process is performed. Since sufficient precipitation may not be promoted and a predetermined strength may not be obtained, an atmospheric furnace may be used after standing at room temperature for less than 30 minutes after water quenching at an actual temperature of 60 ° C. or less. It is desirable to perform an aging heat treatment at a temperature of 180 to 200 ° C. for 1.5 to 8 hours.
以下、本発明のアルミニウム合金製鍛造ロードホイールの実施例を説明するが、本発明は以下の実施例に限定されるものではない。 Examples of the aluminum alloy forged road wheel of the present invention will be described below, but the present invention is not limited to the following examples.
[実施例１]
質量比でＳｉ０．９５〜１．３５％、Ｍｇ０．８〜１．２％、Ｃｕ０．２〜０．５％、Ｍｎ０．４〜０．７％、Ｆｅ０．３％以下及びＣｒ０．０５〜０．２５％を含んで残部をアルミニウムとしたアルミニウム合金製の丸棒を切断して得たビレットに対して、温度５３０℃の均質化熱処理を２時間施すと共に加熱温度５３０℃で加熱した後、鍛造プレス装置を用いて金型温度３００℃の条件で熱間鍛造を行い、次いで、４０℃雰囲気で冷却後鍛造で得たホイール素材に室温スピニング加工を行ってリム部を成形し、続いて、温度５５０℃で５分の溶体化熱処理、実体温度６０℃以下の水焼き入れ、２０分の室温放置及び温度１９０℃で５時間の時効熱処理を順次施した後、機械加工工程及び塗装工程を経て実施例１のアルミニウム合金製鍛造ロードホイールを得た。この際、ディスク部のデザイン面及びリム部が、結晶粒径１０μｍの金属組織を有していた。
[Example 1]
Si 0.95 to 1.35% by mass ratio, Mg 0.8 to 1.2%, Cu 0.2 to 0.5%, Mn 0.4 to 0.7%, Fe 0.3% or less, and Cr 0.05 to 0 A billet obtained by cutting a round bar made of an aluminum alloy containing 25% and the balance being aluminum was subjected to homogenization heat treatment at a temperature of 530 ° C. for 2 hours and heating at a heating temperature of 530 ° C., then forging Using a press machine, hot forging was performed at a mold temperature of 300 ° C., and then the wheel material obtained by forging after cooling in a 40 ° C. atmosphere was subjected to room temperature spinning to form a rim portion, followed by temperature Solution heat treatment at 550 ° C for 5 minutes, water quenching at an actual temperature of 60 ° C or less, standing at room temperature for 20 minutes and aging heat treatment at 190 ° C for 5 hours, followed by machining and painting steps Example 1 aluminum alloy forging It was obtained Dohoiru. At this time, the design surface and the rim portion of the disk portion had a metal structure with a crystal grain size of 10 μm.
[実施例２]
質量比でＳｉ０．９５〜１．３５％、Ｍｇ０．８〜１．２％、Ｃｕ０．２〜０．５％、Ｍｎ０．４〜０．７％、Ｆｅ０．３％以下及びＣｒ０．０５〜０．２５％を含んで残部をアルミニウムとしたアルミニウム合金製の丸棒を切断して得たビレットに対して、温度５００℃の均質化熱処理を２時間施すと共に加熱温度５００℃で加熱した後、鍛造プレス装置を用いて金型温度３００℃の条件で熱間鍛造を行い、次いで、４０℃雰囲気で冷却後鍛造で得たホイール素材に室温スピニング加工を行ってリム部を成形し、続いて、温度５５０℃で５分の溶体化熱処理、実体温度６０℃以下の水焼き入れ、６時間の室温放置及び温度１９０℃で５時間の時効熱処理を順次施した後、機械加工工程及び塗装工程を経て実施例２のアルミニウム合金製鍛造ロードホイールを得た。この際、ディスク部のデザイン面及びリム部が、結晶粒径４５μｍの金属組織を有していた。
[Example 2]
Si 0.95 to 1.35% by mass ratio, Mg 0.8 to 1.2%, Cu 0.2 to 0.5%, Mn 0.4 to 0.7%, Fe 0.3% or less, and Cr 0.05 to 0 A billet obtained by cutting a round bar made of an aluminum alloy containing 25% and the balance being aluminum is subjected to a homogenization heat treatment at a temperature of 500 ° C. for 2 hours and at a heating temperature of 500 ° C., and then forged. Using a press machine, hot forging was performed at a mold temperature of 300 ° C., and then the wheel material obtained by forging after cooling in a 40 ° C. atmosphere was subjected to room temperature spinning to form a rim portion, followed by temperature Solution heat treatment at 550 ° C for 5 minutes, water quenching at an actual temperature of 60 ° C or less, standing at room temperature for 6 hours, and aging heat treatment at 190 ° C for 5 hours, followed by machining process and painting process Example 2 aluminum alloy forging It was obtained Dohoiru. At this time, the design surface and the rim portion of the disk portion had a metal structure with a crystal grain size of 45 μm.
[比較例]
アルミニウム（Ａ６０６１−Ｔ６）の丸棒を切断して得たビレットに対して、温度５００℃の均質化熱処理を２時間施すと共に加熱温度５００℃で加熱した後、鍛造プレス装置を用いて金型温度２３０℃の条件で熱間鍛造を行い、次いで、４０℃雰囲気で冷却後鍛造で得たホイール素材に室温スピニング加工を行ってリム部を成形し、続いて、温度５４０℃で５分の溶体化熱処理、実体温度６０℃以下の水焼き入れ、６時間の室温放置及び温度１９０℃で５時間の時効熱処理を順次施した後、機械加工工程及び塗装工程を経て比較例のアルミニウム製鍛造ロードホイールを得た。この際、ディスク部のデザイン面及びリム部が、結晶粒径３００μｍの金属組織を有していた。
[Comparative example]
A billet obtained by cutting a round bar of aluminum (A6061-T6) was subjected to a homogenization heat treatment at a temperature of 500 ° C. for 2 hours and heated at a heating temperature of 500 ° C., and then a die temperature using a forging press apparatus. Performs hot forging under conditions of 230 ° C, then spins the wheel material obtained by forging after cooling in an atmosphere of 40 ° C to form a rim, and subsequently forms a solution for 5 minutes at a temperature of 540 ° C. The aluminum forged road wheel of the comparative example is subjected to a heat treatment, water quenching at a body temperature of 60 ° C. or less, standing at room temperature for 6 hours, and an aging heat treatment at 190 ° C. for 5 hours, followed by a machining process and a painting process. Obtained. At this time, the design surface and the rim portion of the disk portion had a metal structure with a crystal grain size of 300 μm.
実施例１，２及び比較例の各製造条件を表１に示す。 Table 1 shows the production conditions of Examples 1 and 2 and Comparative Example.
そこで、実施例１，２のアルミニウム合金製鍛造ロードホイールと、比較例のアルミニウム製鍛造ロードホイールとについて、結晶粒径と機械的性質の関係を調べたところ、図２に示すように、結晶粒径５０μｍ以下の金属組織を有している実施例１，２のアルミニウム合金製鍛造ロードホイールの引張り強さがいずれも４００ＭＰａ以上であるのに対して、結晶粒径３００μｍの金属組織を有している比較例のアルミニウム製鍛造ロードホイールの引張り強さが３００ＭＰａであることが判った。 Therefore, when the relationship between the crystal grain size and the mechanical properties of the aluminum alloy forged road wheel of Examples 1 and 2 and the aluminum forged road wheel of the comparative example was examined, as shown in FIG. The tensile strength of the aluminum alloy forged road wheels of Examples 1 and 2 having a metal structure with a diameter of 50 μm or less is 400 MPa or more, while having a metal structure with a crystal grain size of 300 μm. It was found that the tensile strength of the aluminum forged road wheel of the comparative example is 300 MPa.
また、図３にも示すように、結晶粒径５０μｍ以下の金属組織を有している実施例１，２のアルミニウム合金製鍛造ロードホイールの伸びがいずれも６％以上であるのに対して、結晶粒径３００μｍの金属組織を有している比較例のアルミニウム製鍛造ロードホイールの伸びが５％であることが判った。 Moreover, as shown also in FIG. 3, while the elongation of the forged road wheels made of aluminum alloys of Examples 1 and 2 having a metal structure with a crystal grain size of 50 μm or less is 6% or more, It was found that the elongation of the comparative aluminum forged road wheel having a metal structure with a crystal grain size of 300 μm was 5%.
図２及び図３の結果から、結晶粒径５０μｍ以下の金属組織を有している実施例１，２のアルミニウム合金製鍛造ロードホイールが、結晶粒径３００μｍの金属組織を有している比較例のアルミニウム製鍛造ロードホイールと比べて優れた強度及び靭性を有していることが立証できた。 From the results of FIGS. 2 and 3, the forged road wheels made of aluminum alloys of Examples 1 and 2 having a metal structure with a crystal grain size of 50 μm or less have a metal structure with a crystal grain size of 300 μm. It was proved that the steel had excellent strength and toughness compared to the aluminum forged road wheel.
１ アルミニウム合金製鍛造ロードホイール
２ ハブ部
３ デザイン面
４ ディスク部
５ リム部
1 Aluminum alloy forged
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006033422A JP4822324B2 (en) | 2006-02-10 | 2006-02-10 | Aluminum alloy forged road wheel and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006033422A JP4822324B2 (en) | 2006-02-10 | 2006-02-10 | Aluminum alloy forged road wheel and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2007210017A true JP2007210017A (en) | 2007-08-23 |
| JP4822324B2 JP4822324B2 (en) | 2011-11-24 |
Family
ID=38488874
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2006033422A Expired - Fee Related JP4822324B2 (en) | 2006-02-10 | 2006-02-10 | Aluminum alloy forged road wheel and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4822324B2 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009285671A (en) * | 2008-05-27 | 2009-12-10 | Washi Kosan Co Ltd | Forged wheel made of light alloy and its manufacturing method |
| WO2010026778A1 (en) * | 2008-09-05 | 2010-03-11 | ワシ興産株式会社 | Forged billet and wheel |
| WO2010067626A1 (en) | 2008-12-11 | 2010-06-17 | ワシマイヤー株式会社 | Wheel and method of manufaturing thereof |
| CN102085559A (en) * | 2009-12-02 | 2011-06-08 | 雷斯工程株式会社 | Method for producing light alloy vehicle wheel |
| CN102873253A (en) * | 2012-09-27 | 2013-01-16 | 天津市天锻压力机有限公司 | Large-scale aluminum alloy hub isothermal forging production line |
| KR101303854B1 (en) * | 2013-02-27 | 2013-09-04 | (주)알파인 | Method for manufacturing aluminium wheel using hot foging |
| CN104247218A (en) * | 2012-04-24 | 2014-12-24 | 戴姆勒股份公司 | Rotor support and method for producing a rotor support |
| DE102020102625A1 (en) | 2019-02-06 | 2020-08-06 | Bbs Japan Co., Ltd. | WHEEL FORGED FROM AN ALUMINUM ALLOY AND METHOD FOR THE PRODUCTION THEREOF AND A CAST BLOCK FOR FORMING A FORGED WHEEL |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101791905B1 (en) | 2016-06-16 | 2017-10-31 | 주식회사 레오포즈 | A method for heat treatment of the product using rheo-forging |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05123805A (en) * | 1991-04-19 | 1993-05-21 | Norsk Hydro As | Method for manufacture of vehicular wheel |
| JPH09249951A (en) * | 1996-03-12 | 1997-09-22 | Nippon Light Metal Co Ltd | Manufacturing method of forged aluminum product having fine structure |
| JP2004084058A (en) * | 2002-06-27 | 2004-03-18 | Kobe Steel Ltd | Method for producing aluminum alloy forging for transport structural material and aluminum alloy forging |
| JP2005177861A (en) * | 2003-11-26 | 2005-07-07 | Showa Denko Kk | Method for manufacturing formed article, straightening jig, straightening device, cutting device and production system of aluminum alloy forging product |
-
2006
- 2006-02-10 JP JP2006033422A patent/JP4822324B2/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05123805A (en) * | 1991-04-19 | 1993-05-21 | Norsk Hydro As | Method for manufacture of vehicular wheel |
| JPH09249951A (en) * | 1996-03-12 | 1997-09-22 | Nippon Light Metal Co Ltd | Manufacturing method of forged aluminum product having fine structure |
| JP2004084058A (en) * | 2002-06-27 | 2004-03-18 | Kobe Steel Ltd | Method for producing aluminum alloy forging for transport structural material and aluminum alloy forging |
| JP2005177861A (en) * | 2003-11-26 | 2005-07-07 | Showa Denko Kk | Method for manufacturing formed article, straightening jig, straightening device, cutting device and production system of aluminum alloy forging product |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009285671A (en) * | 2008-05-27 | 2009-12-10 | Washi Kosan Co Ltd | Forged wheel made of light alloy and its manufacturing method |
| WO2010026778A1 (en) * | 2008-09-05 | 2010-03-11 | ワシ興産株式会社 | Forged billet and wheel |
| WO2010026779A1 (en) * | 2008-09-05 | 2010-03-11 | ワシ興産株式会社 | Method for producing wheel and wheel |
| WO2010067626A1 (en) | 2008-12-11 | 2010-06-17 | ワシマイヤー株式会社 | Wheel and method of manufaturing thereof |
| CN102085559A (en) * | 2009-12-02 | 2011-06-08 | 雷斯工程株式会社 | Method for producing light alloy vehicle wheel |
| JP2011115812A (en) * | 2009-12-02 | 2011-06-16 | Reizu Eng:Kk | Method for producing light alloy vehicle wheel |
| CN104247218A (en) * | 2012-04-24 | 2014-12-24 | 戴姆勒股份公司 | Rotor support and method for producing a rotor support |
| JP2015520595A (en) * | 2012-04-24 | 2015-07-16 | ダイムラー・アクチェンゲゼルシャフトＤａｉｍｌｅｒ ＡＧ | Rotor carrier and rotor carrier manufacturing method |
| CN102873253A (en) * | 2012-09-27 | 2013-01-16 | 天津市天锻压力机有限公司 | Large-scale aluminum alloy hub isothermal forging production line |
| KR101303854B1 (en) * | 2013-02-27 | 2013-09-04 | (주)알파인 | Method for manufacturing aluminium wheel using hot foging |
| DE102020102625A1 (en) | 2019-02-06 | 2020-08-06 | Bbs Japan Co., Ltd. | WHEEL FORGED FROM AN ALUMINUM ALLOY AND METHOD FOR THE PRODUCTION THEREOF AND A CAST BLOCK FOR FORMING A FORGED WHEEL |
| DE102020102625B4 (en) * | 2019-02-06 | 2025-07-31 | Bbs Japan Co., Ltd. | ALUMINUM ALLOY FORGED WHEEL AND METHOD FOR MANUFACTURING SAME |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4822324B2 (en) | 2011-11-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4822324B2 (en) | Aluminum alloy forged road wheel and manufacturing method thereof | |
| JP2676466B2 (en) | Magnesium alloy member and manufacturing method thereof | |
| TWI490346B (en) | A wire or strip for mechanical construction for cold working and a method for manufacturing the same | |
| TWI624550B (en) | Steel wire for mechanical structural parts | |
| CN1283822C (en) | Method for making magnesium alloy product | |
| US20090113713A1 (en) | Method for Making a Wheel Rim | |
| TWI722780B (en) | Aluminum alloy forged wheel, manufacturing method thereof, and casting blank for forming forged wheel | |
| TWI606124B (en) | Steel for mechanical structure for cold room processing and manufacturing method thereof | |
| CN103834835A (en) | Aluminum pressure casting alloy | |
| JPH09249951A (en) | Manufacturing method of forged aluminum product having fine structure | |
| CN104195386A (en) | Al-Mg-Zn aluminum alloy material for aluminum wheel hubs and method for preparing aluminum wheel hub disk | |
| JP2015527487A (en) | Molded parts made of corrosion-resistant copper alloy | |
| CN105543591B (en) | Aluminum alloy casting rod for wheel hub and preparation method thereof | |
| WO2012095940A1 (en) | Wheel and method for manufacturing same | |
| CN105483473A (en) | Aluminum alloy cast rod for casting hub and preparing method of aluminum alloy cast rod | |
| JPH11246925A (en) | Aluminum alloy casting with high toughness, and its manufacture | |
| JP2001226731A (en) | Aluminum-zinc-magnesium cast forging aluminum alloy, aluminum-zinc-magnesium cast forged product, and method of manufacturing the same | |
| JP2003221637A (en) | Aluminum alloy plate for fabrication and its manufacturing process | |
| JPH1112675A (en) | Production of aluminum alloy for hot forging and hot forged product | |
| JPH06248402A (en) | Production of member made of magnesium alloy | |
| JP2006161103A (en) | Aluminum alloy member and manufacturing method thereof | |
| KR100703130B1 (en) | Non-heat treatment type high ductility aluminum main alloy and its manufacturing method | |
| JP2007308780A (en) | Magnesium alloy structure control method, structure-controlled magnesium alloy, and vehicle wheel | |
| JP2022158882A (en) | Steel wire for machine structural component and its manufacturing method | |
| JPH09249953A (en) | Aluminum Extruded Forged Product Manufacturing Method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20090128 |
|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20101207 |
|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20110901 |
|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20110901 |
|
| R150 | Certificate of patent or registration of utility model |
Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20140916 Year of fee payment: 3 |
|
| LAPS | Cancellation because of no payment of annual fees |