JPH02185956A - Solution heat treatment for aluminum-type hot forged product - Google Patents
Solution heat treatment for aluminum-type hot forged productInfo
- Publication number
- JPH02185956A JPH02185956A JP551189A JP551189A JPH02185956A JP H02185956 A JPH02185956 A JP H02185956A JP 551189 A JP551189 A JP 551189A JP 551189 A JP551189 A JP 551189A JP H02185956 A JPH02185956 A JP H02185956A
- Authority
- JP
- Japan
- Prior art keywords
- temp
- forged product
- hot
- hot forged
- temperature
- 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
- 238000010438 heat treatment Methods 0.000 title claims abstract description 31
- 238000005242 forging Methods 0.000 claims abstract description 33
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 25
- 238000000034 method Methods 0.000 claims abstract description 23
- 238000001816 cooling Methods 0.000 claims abstract description 14
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 24
- 230000007423 decrease Effects 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 229910000838 Al alloy Inorganic materials 0.000 abstract description 7
- 239000000498 cooling water Substances 0.000 abstract description 2
- 238000009966 trimming Methods 0.000 abstract description 2
- 239000000243 solution Substances 0.000 description 42
- 239000000463 material Substances 0.000 description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000003303 reheating Methods 0.000 description 4
- 238000007790 scraping Methods 0.000 description 4
- 230000032683 aging Effects 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 229910019752 Mg2Si Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 238000003483 aging Methods 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000012432 intermediate storage Methods 0.000 description 1
- 239000003350 kerosene Substances 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Landscapes
- Forging (AREA)
Abstract
Description
（産業上の利用分野）
この発明は、アルミニウム（アルミニウムおよびアルミ
ニウム合金をいう、）を素材とする熱間鍛造品に対して
ごく短時間のうちに溶体化処理を行うのに利用されるア
ルミニウム系熱間鍛造品の溶体化処理方法に関するもの
である。
（従来の技術）
従来より、自動車、フォークリフト、繊維機械等々の各
種機械構造物の部品を製造するに際しては、鍛造による
方法、鋳造による方法、焼結による方法、プレス加工に
よる方法など、各種の方法があり、部品の形状、材質１
強度等々の要因を考慮して適宜選択されている。
一方、自動車などに対する軽量化の要請は、かなり以前
からなされており、鉄鋼系材料よりも軽捕であるアルミ
ニウム系材料、チタン系材料、亜鉛系材料、マグネシウ
ム系材料などの採用も広まってきている。
これらのうち、アルミニウム系材料を素材とする部品に
おいても、鍛造、鋳造、焼結、プレス加工などの加工法
によって製作されており、例えば、ＪＩＳ Ｈ４１４
０には各種のアルミニウム及びアルミニウム合金鍛造品
が型打鍛造品や自由鍛造品に適するものとして制定され
ている。そして、鍛造後には、所定の温度に加熱したの
ち冷却する溶体化処理（Ｔ４処理）や、溶体化処理後に
時効硬化処理（Ｔ６処理、Ｔ６１処理）を施すのが普通
である（この際の標準熱処理温度及び時間については、
ＪＩＳ Ｈ４１４０に参考表として示されている。）
。
そこで、アルミニウム系熱間鍛造品に対して溶体化処理
を行うに際しては、鍛造プレスによる熱間ｆ１９造によ
って得られた熱間鍛造品、あるいは必要に応じて熱間鍛
造後にトリムプレスを行った熱間鍛造品を運搬用ボック
スに入れ、ある程度たまったところで運搬用ボックスを
熱間鍛造品とともに溶体化処理炉の近くまで運搬し、次
いで溶体化処理用バスケットに熱間鍛造品を移し変え、
溶体化処理用バスケットと共に熱間鍛造品をバッチ式の
溶体化処理炉に装入して所定の温度まで昇温し、昇温後
直ちにもしくは昇温後便定時間保持したのちに溶体化処
理品を取り出し、水冷槽に投入して冷却するようにして
おり、炭素鋼を素材とするクランクシャフトの鍛造およ
び熱処理（ただし、焼入れ焼もどし）に際しては、「自
動車工学全書第１９巻 自動車の製造法」 昭和５５年
４月２０日発行 自動車工学全書編集委ハ会編第４５頁
の図２．２９に記・成されているように、この場合に
も熱間鍛造品を運搬用ボックスに入れて熱処理設備まで
運搬する方式としていた。
（発明が解決しようとする課題）
しかしながら、このような従来のアルミニウム系熱間鍛
造品の溶体化処理方法においては、■熱間鍛造後に熱間
鍛造品を運搬用ボックスに入れていったんストックして
いること、■運搬用ボックス内の熱間鍛造品を溶体化処
理設備まで運搬していること、
■運搬用ボックス内の熱間鍛造品を溶体化処理用バスケ
ットに移し変えていること、
■溶体化処理用バスケット内の熱間鍛造品のすべてを溶
体化処理温度まで均一にｙ１温させるようにしているこ
と、
などとなっていたため、
■熱間鍛造工程と溶体化処理工程との間での中間在庫品
が多く発生していること、および熱間鍛造品をストック
しているうちに温度が次第に低下すること、ならびにそ
のためにその後の溶体化処理時の再加熱に必要なエネル
ギーが多くなっていること、
■ＭＭＧ用ボックス内の熟１＋ＩＩ ａ造品を溶体化処
理設備まで運搬するための工数および設備が必要である
こと、
■運搬用ボックス内の熱間鍛造品を溶体化処理用バスケ
ットに移し変える工数および設備が必要であること、
■バスケット内で相互に陰となっている部分の多い熱間
鍛造品のすべてを溶体化処理温度まで均一に昇温させる
ために再加熱時間を多くとる必要があること、
などといった問題点があり、中間在庫の多量発生、工数
の増大、再加熱に要するエネルギーの増大、生産リード
タイムの増大などといった課題があった。
（発明の目的）
この発明は、このような従来の課題にかんがみてなされ
たもので、熱間鍛造工程と溶体化処理工程のＩＵ＋で中
間在庫が発生しないと共に熱間鍛造品の工程途中での移
し変えも必要とせず、熱間鍛造品の溶体化処理温度まで
の昇温を著しく短時間のうちにしかも均一になすことが
可能であって省エネルギーに寄与すると共に、生産のリ
ードタイムを大幅に短縮することが可能であるアルミニ
ウム系熱間鍛造品の溶体化処理方法を提供することを目
的としている。(Industrial Application Field) The present invention relates to an aluminum-based The present invention relates to a solution treatment method for hot forged products. (Prior Art) Conventionally, various methods have been used to manufacture parts for various mechanical structures such as automobiles, forklifts, textile machines, etc., such as forging, casting, sintering, and press working. There is, the shape of the part, the material 1
They are appropriately selected in consideration of factors such as strength. On the other hand, there have been demands for weight reduction in automobiles and other products for quite some time, and the use of aluminum-based materials, titanium-based materials, zinc-based materials, magnesium-based materials, etc., which are lighter in weight than steel-based materials, has become widespread. . Among these, parts made of aluminum-based materials are also manufactured using processing methods such as forging, casting, sintering, and press working, and for example, JIS H414.
0, various aluminum and aluminum alloy forged products are established as suitable for die forging and free forging. After forging, it is common to perform solution treatment (T4 treatment), which involves heating to a predetermined temperature and then cooling, or age hardening treatment (T6 treatment, T61 treatment) after solution treatment. Regarding heat treatment temperature and time,
It is shown in JIS H4140 as a reference table. )
. Therefore, when performing solution treatment on aluminum-based hot forged products, hot forged products obtained by hot f19 forging using a forging press, or hot forged products obtained by trim pressing after hot forging as necessary, are recommended. The intermediate forgings are placed in a transport box, and when they have accumulated to a certain extent, the transport box is transported together with the hot forgings to the vicinity of the solution treatment furnace, and then the hot forgings are transferred to the solution treatment basket.
The hot forged product is charged together with the solution treatment basket into a batch-type solution treatment furnace, heated to a predetermined temperature, and the product is solution treated immediately after the temperature is raised or after being held for a certain period of time after the temperature has been raised. When forging and heat treating (quenching and tempering) crankshafts made of carbon steel, the "Complete Book of Automotive Engineering Vol. 19: Automobile Manufacturing Methods" is used. As shown in Figure 2.29 on page 45 of Automotive Engineering Complete Book Editorial Committee Ha-kai, published on April 20, 1980, the hot forged product is also placed in a transport box and heat treated. The method was to transport it to the equipment. (Problem to be Solved by the Invention) However, in such a conventional solution treatment method for aluminum-based hot forged products, ■ After hot forging, the hot forged products are placed in a transportation box and then stocked. ■The hot forgings in the transportation box are being transported to the solution treatment equipment; ■The hot forgings in the transportation box are being transferred to the solution treatment basket; ■The solution All of the hot forged products in the chemical treatment basket were uniformly heated to the solution treatment temperature by y1. There are many intermediate inventories, and the temperature of hot forged products gradually decreases while they are in stock, which increases the energy required for reheating during subsequent solution treatment. ■The number of man-hours and equipment required to transport the hot forged products in the MMG box to the solution treatment equipment, ■The hot forged products in the transportation box to the solution treatment basket. Requires man-hours and equipment to transfer; ■Reheating time is long in order to uniformly raise the temperature of all hot forged products, which have many mutually shaded parts, to the solution treatment temperature in the basket. There were problems such as a large amount of intermediate inventory, an increase in man-hours, an increase in the energy required for reheating, and an increase in production lead time. (Purpose of the Invention) This invention was made in view of such conventional problems, and it eliminates the occurrence of intermediate inventory in IU+ of the hot forging process and the solution treatment process, and eliminates the need for intermediate inventory during the process of hot forged products. Without the need for transfer, it is possible to raise the temperature of hot forged products to the solution treatment temperature extremely quickly and uniformly, contributing to energy savings and significantly shortening production lead times. It is an object of the present invention to provide a solution treatment method for aluminum-based hot forged products that can be shortened.
（課題を解決するための手段）
この発明は、アルミニウム（アルミニウムおよびアルミ
ニウム合金）を素材とするアルミニウム系熱間鍛造品の
溶体化処理を行うに際し、熱間鍛造後熱間鍛造品の温度
が低下しないうちに所定の溶体化処理温度まで昇温し、
昇温後直ちにもしくは昇温後便定時間保持したのちに冷
却するようにした構成としたことを特徴としており、こ
のようなアルミニウム系熱間鍛造品の溶体化処理方法の
構成を上述した従来の課題を解決するための手段として
いる。
この発明が適用されるアルミニウム系熱間鍛造品は、ア
ルミニウムまたはアルミニウム合金を素材とするもので
あり１例えば、ＪＩＳ Ｈ４１４０に制定されたアル
ミニウム及びアルミニウム合金鍛造品を使用することが
可能であり、また必要に応じて適宜の合金成分を適量添
加したり、特定の不純物含有量を制限したりしたものが
使用され、とくに限定はされない。
また、上記のアルミニウム系素材を熱間鍛造するに際し
ても、プレスによる型鍛造やアブセッタによる型鍛造な
どが用いられ、必要に応じてばり取りのためのトリム加
工が行われるが、このような熱間鍛造の手法については
とくに限定されない。
そして、熱間鍛造後には、熱間鍛造品をとくに望ましく
はそのまま昇温加熱炉の入炉側に送り込み、熱間鍛造品
の温度が低下しないうちに所定の溶体化処理温度まで昇
温し、例えば連続式昇温加熱炉によって熱間鍛造品を連
続的に昇温加熱することにより、熱間鍛造品が相互に相
手材の陰となることがないようにし、短時間のうちに均
一に加熱されるようにする。
次いで、昇温後直ちにもしくは昇温後所定時間保持した
のちに水冷槽や熱湯槽などの冷却槽に入れて冷却し、例
えば連続式冷却槽によって熱間鍛造品を冷却することに
より、熱間鍛造品が相互に相手材の陰となることなく迅
速にそして均一に冷却されるようにする。
（発明の作用）
この発明に係るアルミニウム系熱間鍛造品の溶体化処理
方法では、上述した構成を有するものであるから、熱間
鍛造工程と溶体化処理工程の間での中間在庫の発生がな
くなると共に熱間鍛造品の工程途中での移し変えの必要
性もなくなり、熱間鍛造品の溶体化処理温度までの均一
な昇温か迅速になされ、生産のリードタイムが大幅に減
少するという作用がもたらされる。
（実施例）
第１図はこの発明に係るアルミニウム系熱間鍛造品の溶
体化処理方法の一実施態様を示しており、熱間鍛造品１
は鍛造プレスによって熱間で鍛造成形されたのち、トリ
ムプレス２によってぼり取り成形される場合を示してい
る。
この熱間鍛造品１は、ＪＩＳ Ｈ４１４０に制定され
ているアルミニウム合金鍛造品（Ａ４０３２）を素材と
しており１円柱状に切断した材料を誘導加熱によって３
８０〜４００℃に加熱したのち熱間鍛造を行ったもので
ある。
そして、トリムブレス２に設けたシュー）２ａに近接し
た位置に昇温加熱炉３を備えている。この昇温加熱炉３
は、前方ドラム４ａと後方ドラム４ｂとの１７Ｊ７に耐
熱性のメツシュベルト５をかけわたした構造のメツシュ
ベルトコンベア６を炉床部分に備えており、熱間鍛造品
１を連続的に搬送することができるものとなっている。
また、この昇温加熱炉３は、熱間鍛造品１が溶体化処理
温度までなるべく短時間のうちに昇温するように、その
入炉側がトリムブレス２のシュー）２ａに接近した位置
に設けであると共に、前方側に昇温ゾーン７を備え、後
方側に保温ゾーン８を備えており。
炉内温度分布を均一なものにすると回持に対流によって
熱間鍛造品１を迅速に加熱するために、昇温ゾーン７と
保温ゾーン８のそれぞれに攪拌用９．１０を設置しであ
る。さらに、加熱源にはガス、灯油バーナーによる間接
加熱や、ヒータ加熱などが用いられ、熱間鍛造品１が局
部的に加熱されないようにする加熱源が用いられる。さ
らにまた、炉の出入口は炉内温度が低下しないように２
重扉の構造となっている。
この昇温加熱炉３の出］」部分に設けたシュート３ａに
接近した位置に冷却＋１１！１２を備えている。
この冷却槽１２は、冷却剤として水１３を用いており、
水中に浸漬した前方ドラム１４ａと水上に設けた後方ド
ラム１４ｂとの間にかき上げ用ベルト１５をかけわたし
た構造のかき上げコンベア１６を備えており、かき上げ
コンベア１６によって連続的に送られた熱間鍛造品１は
シュート１２ａを通ってバスケット１７内に投入される
ようになっている。そして、この冷却槽１２は、昇温加
熱炉３から出た熱間鍛造品１が例えば１５秒以内に冷却
されるように、昇温加熱炉３の出口部分に接近した位置
に設けてあり、水温が一定したものとなるように攪拌用
１８を備えていると共にオーバフローによる温度調整機
構（図示せず）を備えている。
このような構成の熱間鍛造−溶体化処理ラインによって
、アルミニウム系熱間鍛造品１の溶体化処理を行うに際
しては、第２図にそのときの温度変化を示すように、次
の要領で行う。
この実施例における熱間鍛造品１は、前述したように、
アルミニウム合金鍛造品（Ａ４０３２）を素材とじてお
り、誘導加熱によって円柱状素材を３５０〜４５０ ’
Ｃ１より望ましくは３８０〜４００℃（第２図では約４
００℃を示している。）に加熱したのち、この円柱状素
材に対して鍛造機によって所定の形状となるように熱間
鍛造加工を行い、トリムブレス２によってぼり取り（ト
リム加工）を行う。
このトリムブレス２の加工後に３００〜４００℃ とく
に３１５〜３４０℃となった熱間鍛造品１をトリムブレ
ス２のシュート２ａから昇温加熱炉３のメツシュベルト
６上に移し、昇温ゾーン７を通過させることによって５
〜１５分で５００〜５２０℃まで昇温する。そして、昇
温加熱炉３内での熱間鍛造品１の全滞留時間は約１８分
として残りのわずかな時間を保温ゾーン８で保温し、熱
間鍛造品１の基地中にＣｕＡ９−２ 、 Ｍｇ２ Ｓ
を等を固溶させる溶体化処理を施す、なお、この溶体化
処理は従来のような低温状態からの再加熱を行わないた
め、第２図では簡易溶体化処理と称しているが、溶体化
処理自体は十分に行われるものである。
次いで、Ａ、温加熱炉３のシュー１＝３ａを出た熱間鍛
造品１を冷却槽１２中のかき上げコンベア１６上に落下
させ、４０’（！に温度調整した冷却水１３中に浸漬し
て１５〜２０秒間で４０℃まで急冷し、基地中にＣｕＡ
又２．Ｍｇ２Ｓｉ等を過飽和に固溶させる。
このようにして溶体化処理した後の熱間鍛造品１は、通
常のＴ６処理と同様に、時効処理炉において同じく第２
図に示すように１６５〜１７５℃の温度に所定時間（例
えばおよそ１０時間）保持して時効処理を行う。
かくして、前述した従来の工程による場合には、鍛造お
よび熱処理工程間での待ち時間、運搬時間、溶体化処理
時間および入炉待ち時間の合計として表わされる生産リ
ードタイムがかなり多く必要となっていたのに対して、
この発明によれば待ち時間および運搬時間がなく実質的
に処理時間だけとなるので、生産リードタイムは従来の
約ｌ／２５時間に短縮することが可能であった。また、
エネルギー消費量も約１／４〜１１５に低減することが
可能であった。(Means for Solving the Problems) This invention provides a method for solution treatment of aluminum-based hot forged products made of aluminum (aluminum and aluminum alloys), in which the temperature of the hot forged products decreases after hot forging. The temperature is raised to the specified solution treatment temperature before
It is characterized by a structure in which cooling is performed immediately after the temperature is raised or after the temperature is held for a certain period of time. It is used as a means to solve problems. The aluminum-based hot forged products to which this invention is applied are made of aluminum or aluminum alloys; for example, aluminum and aluminum alloy forged products specified in JIS H4140 can be used; If necessary, a suitable alloy component may be added in an appropriate amount or a specific impurity content may be limited, but there are no particular limitations. In addition, when hot forging the aluminum-based materials mentioned above, die forging with a press or die forging with an absetter is used, and trimming to remove burrs is performed as necessary. The forging method is not particularly limited. After hot forging, the hot forged product is preferably sent as it is to the entry side of the heating furnace, and the temperature is raised to a predetermined solution treatment temperature before the temperature of the hot forged product decreases. For example, by continuously raising the temperature of hot forged products using a continuous heating furnace, hot forged products can be heated uniformly in a short period of time without shadowing each other. to be done. Next, immediately after raising the temperature or after holding it for a predetermined period of time, the hot forged product is cooled by placing it in a cooling tank such as a water cooling tank or a hot water tank, for example, by cooling the hot forged product in a continuous cooling tank. To quickly and uniformly cool products without shadowing each other. (Function of the Invention) Since the solution treatment method for aluminum hot forged products according to the present invention has the above-described configuration, intermediate inventory is not generated between the hot forging process and the solution treatment process. At the same time, there is no need to transfer hot forged products during the process, and hot forged products can be heated uniformly to the solution treatment temperature quickly, resulting in a significant reduction in production lead time. brought about. (Example) FIG. 1 shows an embodiment of the solution treatment method for aluminum-based hot forged products according to the present invention.
2 shows a case in which after being hot forged in a forging press, it is rounded out in a trim press 2. This hot forged product 1 is made of an aluminum alloy forged product (A4032) specified in JIS H4140, and is made by cutting the material into cylindrical shapes and heating it by induction heating.
After heating to 80 to 400°C, hot forging was performed. A heating furnace 3 is provided at a position close to the shoe 2a provided on the trim brace 2. This heating furnace 3
This is equipped with a mesh belt conveyor 6 in the hearth portion, which has a structure in which a heat-resistant mesh belt 5 is passed over a front drum 4a and a rear drum 4b (17J7), and the hot forged product 1 can be continuously conveyed. It has become possible. In addition, this heating furnace 3 is installed at a position where its entrance side is close to the shoe 2a of the trim brace 2 so that the temperature of the hot forged product 1 is raised to the solution treatment temperature in as short a time as possible. In addition, it has a temperature raising zone 7 on the front side and a heat retention zone 8 on the rear side. In order to make the temperature distribution in the furnace uniform and to rapidly heat the hot forged product 1 by convection during recirculation, stirring parts 9 and 10 are installed in each of the temperature raising zone 7 and the heat retention zone 8. Further, indirect heating using a gas or kerosene burner, heater heating, or the like is used as a heating source, and a heating source that prevents the hot forged product 1 from being locally heated is used. Furthermore, the entrance and exit of the furnace should be placed 2 times to prevent the temperature inside the furnace from dropping.
It has a heavy door structure. A cooling unit 11!12 is provided at a position close to the chute 3a provided at the exit of the heating furnace 3. This cooling tank 12 uses water 13 as a coolant,
It is equipped with a scraping conveyor 16 having a structure in which a scraping belt 15 is passed between a front drum 14a immersed in water and a rear drum 14b provided above the water, and the drum 14 is continuously fed by the scraping conveyor 16. The hot forged product 1 is placed into a basket 17 through a chute 12a. The cooling tank 12 is provided at a position close to the exit portion of the heating furnace 3 so that the hot forged product 1 coming out of the heating furnace 3 is cooled within, for example, 15 seconds. It is equipped with a stirring device 18 to keep the water temperature constant, and is also equipped with a temperature adjustment mechanism (not shown) using an overflow. When performing solution treatment on an aluminum hot forged product 1 using a hot forging-solution treatment line with such a configuration, the process is carried out as follows, as shown in Figure 2, which shows the temperature change at that time. . As mentioned above, the hot forged product 1 in this example has
The material is made of aluminum alloy forged product (A4032), and the cylindrical material is heated to 350~450' by induction heating.
C1 is more preferably 380 to 400°C (about 4°C in Figure 2).
It shows 00℃. ), the cylindrical material is hot forged using a forging machine into a predetermined shape, and then trimmed using a trim brace 2. After processing the trim brace 2, the hot forged product 1, which has reached a temperature of 300 to 400°C, particularly 315 to 340°C, is transferred from the chute 2a of the trim brace 2 onto the mesh belt 6 of the heating furnace 3, and passes through the heating zone 7. 5 by letting
Raise the temperature to 500-520°C in ~15 minutes. The total residence time of the hot forged product 1 in the temperature increasing heating furnace 3 is about 18 minutes, and the remaining time is kept warm in the heat retention zone 8, and CuA9-2, CuA9-2, Mg2S
This solution treatment is called a simple solution treatment in Figure 2 because it does not involve reheating from a low-temperature state as in the conventional solution treatment. The processing itself is carried out satisfactorily. Next, A, the hot forged product 1 that has come out of the shoe 1 = 3a of the heating furnace 3 is dropped onto the scraping conveyor 16 in the cooling tank 12, and immersed in the cooling water 13 whose temperature has been adjusted to 40' (! and rapidly cooled to 40℃ for 15 to 20 seconds to add CuA to the base.
Also 2. Mg2Si etc. are dissolved in supersaturated solid solution. The hot forged product 1 that has been solution-treated in this way is placed in the second aging furnace in the same way as in the normal T6 treatment.
As shown in the figure, the aging treatment is performed by maintaining the temperature at 165 to 175° C. for a predetermined time (for example, about 10 hours). Thus, with the conventional process described above, a considerable amount of production lead time was required, expressed as the sum of waiting time, transportation time, solution treatment time, and furnace waiting time between forging and heat treatment steps. In contrast,
According to the present invention, there is no waiting time or transportation time, and there is essentially only processing time, so the production lead time can be shortened to about 1/25 hours compared to the conventional method. Also,
It was also possible to reduce energy consumption by about 1/4 to 115 times.
この発明に係るアルミニラ系熱間鍛造品の溶体化処理方
法では、アルミニウムを素材とするアルミニウム系熱間
鍛造品の溶体化処理を行うに際し、熱間鍛造後熱間鍛造
品の温度が低下しないうちに所定の溶体化処理温度まで
昇温し、昇温後直ちにもしくは昇温後所定時間保持した
のちに冷却する構成としたから、熱間鍛造工程と溶体化
処理工程との間で熱間鍛造品の中間在庄が発生しないと
共に熱間鍛造品の工程途中での例えば迂搬用ポー２クス
から溶体化処理用バスケットへの移し変えも必要とせず
、熱間鍛造品の溶体化処理温度までの昇温を著しく短時
間のうちにしかも均一になすことが可能であって品質の
向上ならびにエネルギー消費量の低減に寄与すると共に
。
生産のリードタイムの大幅な短縮を実現することが可能
であるという著しく優れた効果がもたらされる。In the solution treatment method for an aluminium-based hot forged product according to the present invention, when performing solution treatment on an aluminum-based hot forged product made of aluminum, the temperature of the hot forged product after hot forging does not decrease. The structure is such that the temperature is raised to a predetermined solution treatment temperature, and then cooled immediately after raising the temperature or after being held for a predetermined period of time after raising the temperature. There is no need for intermediate storage of hot forged products, and there is no need to transfer the hot forged products from the bypass port to the solution treatment basket during the process. It is possible to uniformly heat the product in a very short period of time, contributing to improved quality and reduced energy consumption. This brings about the remarkable effect that it is possible to realize a significant reduction in production lead time.
第１図はこの発明に係るアルミニウム系熱間鍛造品の溶
体化処理方法の実施例を示す概略説明図、第２図は熱間
鍛造および溶体化処理ならびに時効処理の時間による温
度変化を示す説明図である。
１・・・熱間鍛造品。
３・・・昇温加熱炉。
１２・・・冷却槽。Fig. 1 is a schematic explanatory diagram showing an embodiment of the solution treatment method for aluminum hot forged products according to the present invention, and Fig. 2 is an explanation showing temperature changes depending on time of hot forging, solution treatment, and aging treatment. It is a diagram. 1...Hot forged product. 3...Temperature heating furnace. 12...Cooling tank.
Claims (1)
造品の溶体化処理を行うに際し、熱間鍛造後熱間鍛造品
の温度が低下しないうちに所定の溶体化処理温度まで昇
温し、昇温後直ちにもしくは昇温後所定時間保持したの
ちに冷却することを特徴とするアルミニウム系熱間鍛造
品の溶体化処理方法。(1) When performing solution treatment on an aluminum-based hot forged product made from aluminum, the temperature is raised to the predetermined solution treatment temperature before the temperature of the hot forged product decreases after hot forging. A method for solution treatment of aluminum-based hot forgings, characterized by cooling immediately after heating or after holding for a predetermined period of time after heating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1005511A JP2661232B2 (en) | 1989-01-12 | 1989-01-12 | Manufacturing method of aluminum-based hot forgings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1005511A JP2661232B2 (en) | 1989-01-12 | 1989-01-12 | Manufacturing method of aluminum-based hot forgings |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02185956A true JPH02185956A (en) | 1990-07-20 |
| JP2661232B2 JP2661232B2 (en) | 1997-10-08 |
Family
ID=11613215
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1005511A Expired - Lifetime JP2661232B2 (en) | 1989-01-12 | 1989-01-12 | Manufacturing method of aluminum-based hot forgings |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2661232B2 (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58204164A (en) * | 1982-04-13 | 1983-11-28 | アリユミニウム・ペシネ | Manufacture of aluminum alloy punched or forged member |
| JPS61179858A (en) * | 1985-02-04 | 1986-08-12 | Sumitomo Electric Ind Ltd | Direct heat treatment of aluminum alloy powder extruded material |
| JPS61199003A (en) * | 1985-02-28 | 1986-09-03 | Sumitomo Electric Ind Ltd | Heat treatment of aluminum alloy powder extruded material |
| JPS63307240A (en) * | 1987-06-05 | 1988-12-14 | Mitsubishi Metal Corp | High strength wear resistant al-si alloy forged member having low thermal expansion coefficient and its production |
-
1989
- 1989-01-12 JP JP1005511A patent/JP2661232B2/en not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58204164A (en) * | 1982-04-13 | 1983-11-28 | アリユミニウム・ペシネ | Manufacture of aluminum alloy punched or forged member |
| JPS61179858A (en) * | 1985-02-04 | 1986-08-12 | Sumitomo Electric Ind Ltd | Direct heat treatment of aluminum alloy powder extruded material |
| JPS61199003A (en) * | 1985-02-28 | 1986-09-03 | Sumitomo Electric Ind Ltd | Heat treatment of aluminum alloy powder extruded material |
| JPS63307240A (en) * | 1987-06-05 | 1988-12-14 | Mitsubishi Metal Corp | High strength wear resistant al-si alloy forged member having low thermal expansion coefficient and its production |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2661232B2 (en) | 1997-10-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109792805B (en) | Rapid heating of sheet metal blanks for stamping | |
| US20230088978A1 (en) | High strength aluminum stamping | |
| CN1083541A (en) | A kind of method of production can body sheet | |
| US8056383B2 (en) | Method of reheating steel part | |
| US20150240339A1 (en) | Tailored rolling of high strength aluminum | |
| CA2198246A1 (en) | Method for heat treating a metal component | |
| US4405386A (en) | Process and apparatus for improving cold rollability and/or strip annealability of metals and metal alloys | |
| US6579387B1 (en) | Continuous casting process for producing aluminum alloys having low earing | |
| CN115852119A (en) | H13 ingot casting forging hot-work die steel and production method thereof | |
| CN109136628A (en) | A kind of hot rolling technology of 6xxx aluminium alloy | |
| US4030947A (en) | Heating treatment method and system of utilizing same | |
| US20040007295A1 (en) | Method of manufacturing aluminum alloy sheet | |
| Hirt et al. | Semi-solid forging of 100Cr6 and X210CrW12 steel | |
| KR102550402B1 (en) | How to mold parts from sheet material | |
| US20100236317A1 (en) | Method for forming articles at an elevated temperature | |
| EP0909339B1 (en) | Method for processing billets from multiphase alloys | |
| JPH02185956A (en) | Solution heat treatment for aluminum-type hot forged product | |
| US4358324A (en) | Method of imparting a fine grain structure to aluminum alloys having precipitating constituents | |
| Dedov et al. | Application of combined casting-forging process for production of durable lightweight aluminum parts | |
| US20030173003A1 (en) | Continuous casting process for producing aluminum alloys having low earing | |
| JP5693904B2 (en) | Manufacturing method of superplastic molded product | |
| US20040108022A1 (en) | Recrystallization of metal alloy sheet with convection & infrared radiation heating | |
| US4957154A (en) | Process for the in-line homogenization and recrystallization of metallic products obtained by continuous casting | |
| CN114867885A (en) | Aluminum forming method | |
| EP1566461B1 (en) | Recrystallization of metal alloy sheet with convection & infrared radiation heating |