JP2003048026A - Plastic working method for magnesium alloy and device therefor - Google Patents
Plastic working method for magnesium alloy and device thereforInfo
- Publication number
- JP2003048026A JP2003048026A JP2001235784A JP2001235784A JP2003048026A JP 2003048026 A JP2003048026 A JP 2003048026A JP 2001235784 A JP2001235784 A JP 2001235784A JP 2001235784 A JP2001235784 A JP 2001235784A JP 2003048026 A JP2003048026 A JP 2003048026A
- Authority
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- Japan
- Prior art keywords
- magnesium alloy
- die
- plastic working
- temperature
- punch
- Prior art date
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- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、マグネシウム合金製薄
肉製品の製造のための塑性加工方法およびその装置に関
するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plastic working method and apparatus for producing a magnesium alloy thin-walled product.
【０００２】[0002]
【従来技術及び発明が解決しようとする課題】マグネシ
ウムは実用金属中最も軽量であり、その合金の薄肉品
は、比強度、電磁シールド性、熱放散性、振動減衰性等
が優れている他、リサイクルのための再生産エネルギー
が少なくて済む等の利点を備えており、近年電気・通信
機器に多用されるようになってきた。BACKGROUND OF THE INVENTION Magnesium is the lightest of the practical metals, and the thin-walled product of the alloy is excellent in specific strength, electromagnetic shielding property, heat dissipation property, vibration damping property, and the like. It has the advantage that it requires less regenerated energy for recycling, and in recent years it has come to be widely used in electric and communication devices.
【０００３】そして現在採用されている薄肉品の成形加
工法としては、溶融マグネシウム合金を高速高圧で金型
に注入し、瞬時に成型するダイキャスト法や、マグネシ
ウム合金を切削して作ったチップをシリンダー内で加熱
し、そのまま金型内に射出して成形するチクソモールド
法が知られている。尚薄肉品の原料としてはＡＺ９１合
金（アルミ９％，亜鉛１％）の採用が一般的である。As a thin-walled product forming method currently adopted, a die-casting method of injecting a molten magnesium alloy into a mold at high speed and high pressure and instantly forming it, or a chip made by cutting a magnesium alloy is used. A thixomolding method is known in which heating is performed in a cylinder, and the material is directly injected into a mold for molding. As a raw material for thin products, AZ91 alloy (aluminum 9%, zinc 1%) is generally used.
【０００４】しかし前記ダイキャスト法やチクソモール
ド法を採用して薄肉製品（１ｍｍ以下）を製造しようと
すると、厚み不足やピンホール、バリ等が生じ二次加工
並びに補修再加工が必要であり、而も特に補修作業は、
パテ塗りや、表面研削を行った後に塗装仕上げを行うも
ので、非常に繁雑である。更に研削粉に対する防災も必
要であり、製品全体の歩留まりが非常に悪い。However, when attempting to manufacture a thin product (1 mm or less) by using the die-casting method or the thixomolding method, insufficient thickness, pinholes, burrs, etc. are generated, and secondary processing and repair / reprocessing are required. Moreover, especially the repair work,
It is very complicated because it is putty-finished and the surface is ground before the paint finish. Furthermore, disaster prevention for grinding powder is also necessary, and the yield of the entire product is very poor.
【０００５】また肉厚も現在のところ０．８ｍｍ厚が限
界であり、リサイクルの面でも、製造型に塗布する離剥
剤が高温状態で合金と接触して合金内に混入してしま
い、この微小混入物をリサイクル時に除去する必要があ
る等の問題もある。At present, the wall thickness is limited to 0.8 mm, and in terms of recycling, the release agent applied to the manufacturing mold comes into contact with the alloy at a high temperature and is mixed into the alloy. There are also problems such as the need to remove minute contaminants during recycling.
【０００６】このように従来におけるやグネシウム合金
による薄肉製品の製造には種々の問題点がある。そこで
マグネシウム合金をプレス加工（塑性加工）によって製
品成形が可能であるならば、前記の従来の製造方法が抱
えていた問題点を一挙に解消できるものである。As described above, there are various problems in the conventional production of thin-walled products using a gnesium alloy. Therefore, if the magnesium alloy can be formed into a product by press working (plastic working), the problems that the conventional manufacturing method has can be solved at once.
【０００７】マグネシウム合金の塑性加工については、
先に社団法人軽金属協会が昭和３５年度通産省応用研究
補助金の交付を受け、前記協会内に組織したマグネシウ
ム委員会で検討され、「マグネシウム合金展伸材の標準
性質測定に関する研究」として、昭和３７年１０月に報
告されている。Regarding the plastic working of magnesium alloys,
The Light Metals Association of Japan received a grant from the Ministry of International Trade and Industry applied research grant in 1960, and it was examined by the magnesium committee formed within the association. As a "study on the standard property measurement of wrought magnesium alloys", It was reported in October of the year.
【０００８】その内容は、材料としてＡＺ３１他のマグ
ネシウム合金を使用し、試験装置として、発熱体にニク
ロム線の電気抵抗を利用し、ダイスおよびしわ押さえ板
の内縁部、ならびにパンチには冷却水が通せるようにし
た構成を採用し、（イ）パンチ、ダイスとも同一の温度
とした場合（ロ）パンチは水冷し（９２０〜６０℃）、
ダイスは一様な温度に加熱した場合（ハ）パンチは水冷
し、ダイスは内縁を水冷しつつ周辺を加熱して温度勾配
をつけた場合を行い、（イ）に対して（ロ）の場合が、
破断の危険が大きい容器の底付近の強度を常温強度程度
に保持できるため全般的に絞り特性が向上すること、更
に（ハ）では、ダイスに温度勾配をつけることでフラン
ジ部分おいても内側強度が増し破断し難くなることが報
告されている。The contents are as follows: magnesium alloy such as AZ31 is used as the material, the electric resistance of the nichrome wire is used for the heating element as the test device, and cooling water is used for the inner edge of the die and the wrinkle holding plate and the punch. Adopting a structure that allows passage, (a) when the punch and die have the same temperature, (b) the punch is water-cooled (920 to 60 ° C),
When the die is heated to a uniform temperature (c) The punch is water-cooled, and the die is a case where the inner edge is water-cooled and the periphery is heated to create a temperature gradient. In the case of (a) to (b) But,
The strength near the bottom of the container, which has a high risk of breakage, can be maintained at room temperature strength, improving the drawing characteristics in general, and in (c), a temperature gradient is applied to the die to increase the inner strength even at the flange. It has been reported that the cracking resistance increases and it becomes difficult to break.
【０００９】また本件発明者らは、マグネシウム合金の
プレス加工の実用化の適否を探るべく試験を行った。試
験結果は、社団法人軽金属学会発行の軽金属第５０巻第
９号に「ＡＺ３１マグネシウム合金の深絞り成形性」と
して報告した。Further, the inventors of the present invention conducted a test to find out whether or not the press working of the magnesium alloy is practical. The test results were reported as "Deep drawing formability of AZ31 magnesium alloy" in Light Metals Vol. 50, No. 9, published by Japan Institute of Light Metals.
【００１０】その内容は、円形に曲げた棒状ヒータをヒ
ータホルダに組み込み、伝熱板を介してダイスとしわ押
さえの両方を加熱すると共に、温度制御はダイスとしわ
押さえの表面近傍に熱電対を取り付け、ＰＩＤ方式によ
るフィードバック制御を行い、パンチは内部に水を流す
ことで温度調節ができる構造とし、ダイス、しわ押さえ
とも室温〜２５０℃の温度範囲で行うと共に、パンチ温
度を０、３０，１００℃の各温度に設定して実験を行っ
て、マグネシウム合金（ＡＺ３１）加工可能性を確認し
た。The contents are as follows: A rod-shaped heater bent in a circular shape is incorporated into a heater holder to heat both the die and the wrinkle retainer via a heat transfer plate, and the temperature is controlled by mounting a thermocouple near the surface of the die and the wrinkle retainer. , PID method is used for feedback control, and the punch has a structure in which the temperature can be adjusted by flowing water inside. Both the die and the wrinkle holder are operated in the temperature range of room temperature to 250 ° C, and the punch temperature is 0, 30, 100 ° C. Experiments were carried out by setting the respective temperatures to 1) and the possibility of processing the magnesium alloy (AZ31) was confirmed.
【００１１】また、加熱−冷却深絞り法（マグネシウム
の温間深絞り法に対して高温深絞り法という）として知
られているプレス加工方法は、フランジ部のみを加熱昇
温して変形抵抗を下げ、加工完了した部分を冷却して、
破断抵抗を上げ、更に急冷却による熱応力を利用する方
法で、この方法に採用されているプレス装置も、前記の
各試験装置と基本的には同様な構造を備えている。A pressing method known as a heating-cooling deep drawing method (referred to as a high temperature deep drawing method in contrast to a warm deep drawing method of magnesium) heats and heats only a flange portion to reduce deformation resistance. Lower, cool the finished part,
This is a method of increasing the rupture resistance and utilizing thermal stress due to rapid cooling, and the press apparatus used in this method also has basically the same structure as each of the above-mentioned test apparatuses.
【００１２】このようにプレス加工（金属塑性加工）に
おいて、ダイスやパンチを所定の温度にして実施するこ
とは知られているが、従前の装置は、全て実験室的構成
であり、その手法も加工対象物の単純単一加工であり、
現実の製造工程自体に関しては全く考慮されていない。
即ち被加工対象物（ワーク）は、室温と相違する所定の
温度状態での加工が必要であり、而も製品形状毎の絞り
加工、曲げ加工、打ち抜き加工等、各種の加工を施すこ
とによって製品が製出される。[0012] As described above, it is known to perform the die working and the punch working at a predetermined temperature in the press working (metal plastic working). However, all the conventional apparatuses have a laboratory structure, and the method is also used. It is a simple single machining of the workpiece,
No consideration is given to the actual manufacturing process itself.
That is, the object to be processed (workpiece) needs to be processed in a predetermined temperature state different from room temperature, and in addition, various processing such as drawing, bending, and punching for each product shape Is produced.
【００１３】そこで本発明は、発明者らの前記試験結果
を踏まえ、マグネシウム合金の実用的な塑性加工方法並
びにその加工装置（プレス装置）を提案したものであ
る。Therefore, the present invention proposes a practical plastic working method of a magnesium alloy and a working apparatus (pressing apparatus) thereof, based on the test results of the inventors.
【００１４】[0014]
【課題を解決する手段】本発明に係るマグネシウム合金
の塑性加工方法は、加工対象のマグネシウム合金を予め
所定温度に暖めておき、少なくとも複数の連続加工型の
各ダイス側を所定温度に昇温させた状態として、予熱し
たマグネシウム合金を連続的に順次所定の塑性加工を施
してなることを特徴とするものである。A method of plastic working a magnesium alloy according to the present invention is such that a magnesium alloy to be worked is warmed to a predetermined temperature in advance, and at least each die side of a continuous working die is heated to a predetermined temperature. In this state, the preheated magnesium alloy is continuously and sequentially subjected to predetermined plastic working.
【００１５】また本発明に係るマグネシウム合金の塑性
加工装置は、加工対象物のマグネシウム合金薄板（ワー
ク）の予熱機構と、プレス型連続加工機構とを備え、前
記プレス型連続加工機構において、ダイス側金型の加熱
手段を組み込んでなることを特徴とするものである。The magnesium alloy plastic working apparatus according to the present invention is provided with a preheating mechanism for a magnesium alloy thin plate (workpiece) to be machined and a press die continuous machining mechanism. It is characterized in that a heating means for the mold is incorporated.
【００１６】従って、ダイス側金型は、所望の温度に維
持されるので、これによって予め所定温度に暖めている
ワークを、所定の温度を維持した状態で連続塑性加工す
ることが可能となり、所望の形状の製品（部品）を製出
できるものである。Therefore, since the die side mold is maintained at a desired temperature, it becomes possible to perform continuous plastic working on a workpiece which has been warmed to a predetermined temperature in advance while maintaining the predetermined temperature. It is possible to produce products (parts) in the shape of.
【００１７】更に本発明方法は、必要に応じてパンチ側
の各パンチ及びしわ押さえを冷却或いは加熱して各々所
定温度に制御して塑性加工を施してなることを特徴とす
るものであり、また前記方法を実現する本発明装置は、
前記装置に更にパンチ側のしわ押さえの一部又は全部に
対して、所定の熱制御機能を備えた加熱手段を組み込ん
だり、パンチの一部又は全部に、パンチを加熱又は冷却
する温度制御手段を備えたものである。Further, the method of the present invention is characterized in that each of the punches on the punch side and the wrinkle retainer are cooled or heated as necessary, and each is controlled to a predetermined temperature for plastic working. The device of the present invention for realizing the method is
Further, a heating means having a predetermined heat control function is incorporated in a part or all of the wrinkle holder on the punch side, or a temperature control means for heating or cooling the punch is provided in a part or all of the punch. Be prepared.
【００１８】従って製品形状によって決定される各種の
加工工程において、しわ押さえによるワークの加熱（ワ
ークの放熱による温度低下を補償する）、並びにパンチ
の冷却又は加熱（加工応力が強く加わり破断の危険が大
きい箇所におけるワーク強度の保持）を選択的に制御す
ることで、最適な加工を実現することができる。Therefore, in various processing steps determined by the shape of the product, the work is heated by pressing the wrinkles (to compensate for the temperature decrease due to the heat radiation of the work), and the punch is cooled or heated (the processing stress is strongly applied, and there is a risk of fracture. Optimum machining can be realized by selectively controlling the holding of the work strength in a large area).
【００１９】また本発明装置の加熱手段として、ダイス
側となるベースに装着する連続加工用金型を、ベース部
との間に断熱部を介在させると共に、適宜な熱源を備え
たヒートプレート部と接触させて、所望の温度に制御可
能状態として組み込んだり、しわ押さえの加熱手段とし
て、ベースとの間に断熱部を介在させると共に、適宜な
熱源を備えたヒートプレート部と接触させて所望の温度
に制御可能状態として組み込む構成を採用したものであ
る。Further, as the heating means of the apparatus of the present invention, a die for continuous processing mounted on a base on the die side is provided with a heat insulating portion between the base portion and a heat plate portion provided with an appropriate heat source. It can be brought into contact with a desired temperature to be incorporated as a controllable state, or as a heating means for suppressing wrinkles, an adiabatic part is interposed between the base and a desired temperature by contacting a heat plate part equipped with an appropriate heat source. It adopts a configuration to be incorporated into the controllable state as.
【００２０】従ってダイス並びにしわ押さえは、ヒート
プレート部による間接加熱となるために、形状が相違す
る製品の製出に対して、ダイスやしわ押さえを変更する
のみで当該装置を使用することができ、マグネシウム合
金製品の汎用加工機として利用できることになる。Therefore, since the die and the wrinkle retainer are indirectly heated by the heat plate portion, the device can be used only by changing the die and the wrinkle retainer when producing a product having a different shape. , Can be used as a general-purpose processing machine for magnesium alloy products.
【００２１】[0021]
【実施の形態】次に本発明方法を実施する装置（本発明
実施装置）の実施形態について説明する。実施形態に示
した装置は、予熱機構Ａと、プレス型連続加工機構Ｂ
と、予熱機構Ａのワークをプレス型連続加工機構Ｂに供
給する供給機構（図示せず）とで構成される。BEST MODE FOR CARRYING OUT THE INVENTION Next, an embodiment of an apparatus for carrying out the method of the present invention (an apparatus for carrying out the present invention) will be described. The apparatus shown in the embodiment has a preheating mechanism A and a press-type continuous machining mechanism B.
And a supply mechanism (not shown) for supplying the work of the preheating mechanism A to the press-type continuous processing mechanism B.
【００２２】最初にワークＣについて説明すると、ワー
クＣは、現在のところＡＺ３１のマグネシウム合金の薄
板０．８〜０．５ｍｍが最適であるが、必ずしもこれに
限定されない。また塑性加工時に金型との接触抵抗を軽
減する潤滑剤が必要であり、テフロン（登録商標）シー
トによる被覆や、潤滑剤の塗布を適宜選択的に採用す
る。First, the work C will be explained. At present, the work C is optimally a thin plate of a magnesium alloy of AZ31 of 0.8 to 0.5 mm, but the work C is not necessarily limited to this. In addition, a lubricant that reduces the contact resistance with the mold during plastic working is required, and coating with a Teflon (registered trademark) sheet or application of a lubricant is selectively used as appropriate.
【００２３】予熱機構Ａは、ワークＣを、所望の温度
（１００〜３５０℃）に加熱するもので、加熱方法は、
ワークＣを所定の間隔で所定の温度まで上昇させ、次の
加工機構Ｂの加工間隔に同期して供給できれば良いもの
で、具体的には、ヒータ内蔵のヒートプレートにワーク
Ｃを所定時間載置した後に供給機構で搬出したり、ヒー
トコンベアで一定時間搬送することでワークの所定昇温
を実現したり、搬送コンベアの途中に誘導加熱装置を組
み込んで昇温させる等の種々の加熱手段が採用できる。
尚この予熱は、塗布した潤滑剤の乾燥としても利用でき
る場合がある。The preheating mechanism A heats the work C to a desired temperature (100 to 350 ° C.).
It suffices if the work C can be heated to a predetermined temperature at a predetermined interval and supplied in synchronization with the processing interval of the next processing mechanism B. Specifically, the work C is placed on a heat plate with a built-in heater for a predetermined time. After that, various heating means such as unloading with a supply mechanism, realizing a predetermined temperature rise of the work by conveying for a certain time with a heat conveyor, or incorporating an induction heating device in the middle of the conveyance conveyor to raise the temperature it can.
Note that this preheating may also be used for drying the applied lubricant.
【００２４】プレス型連続加工機構Ｂは、基本的に従前
の連続加工機と同様で、ワークを加圧力で加工する一対
の工具（金型／パンチ側：パンチ及びしわ押さえ等、ダ
イス側：ダイス他）１，２を、必要とするプレス工程に
対応して順次並設すると共に、各工具（金型）を作動さ
せる動作機構や、ワークＣを各工具（金型）間に順次送
り込む順送り機構（トランスファフィーダ：図示せず）
等を付設しているものである。The press-type continuous processing mechanism B is basically the same as the conventional continuous processing machine, and is a pair of tools for processing a work with a pressing force (die / punch side: punch and wrinkle press, die side: die). Others) 1 and 2 are sequentially arranged in parallel corresponding to the required pressing process, and an operation mechanism for operating each tool (die) and a progressive feed mechanism for sequentially feeding the work C between each tool (die) (Transfer feeder: not shown)
Etc. are attached.
【００２５】本発明方法に使用する装置は、例えばフレ
ームの上方に配置され、上下作動するベース３ａに、断
熱部５を介在させてヒートプレート部４を設け、このヒ
ートプレート部４に接触するようにして金型（ダイス）
２を組み込んでなる。The apparatus used in the method of the present invention is provided, for example, on the base 3a, which is arranged above the frame and moves up and down, with the heat plate portion 4 with the heat insulating portion 5 interposed, so that the heat plate portion 4 is brought into contact with the heat plate portion 4. And die (die)
2 incorporated.
【００２６】またパンチ側の金型１においても、加工形
態に応じて選択的に、ベース３ｂにパンチ１１及びしわ
押さえ１２を組み込む際に、断熱部５で熱遮断を行うと
共に、しわ押さえ１２には、ヒートプレート部４を付設
し、パンチ１１には、加熱又は冷却用の温度調整部４ａ
を付設する。Also in the die 1 on the punch side, when the punch 11 and the wrinkle retainer 12 are selectively incorporated in the base 3b, the heat insulation is performed by the heat insulating portion 5 and the wrinkle retainer 12 is selected. Is provided with a heat plate unit 4, and the punch 11 has a temperature adjusting unit 4a for heating or cooling.
Attach.
【００２７】前記のヒートプレート部４は、側面に多数
の横穴（装着孔）を穿設し、各横穴に棒状ヒータ（電熱
線を耐熱絶縁物で被覆すると共に、鋼管に収納している
市販品）４１を、隙間に耐熱セメントを充填するなどし
て密挿着してなる。またダイス２やしわ押さえ１２の適
宜位置に温度センサを設置し、各ヒータ４１を独立して
制御可能な構成としておく。The heat plate section 4 has a large number of lateral holes (mounting holes) formed in its side surface, and each lateral hole has a bar-shaped heater (the heating wire is covered with a heat-resistant insulating material and is housed in a steel pipe). ) 41 is tightly inserted by, for example, filling the gap with heat-resistant cement. Further, temperature sensors are installed at appropriate positions of the die 2 and the wrinkle retainer 12 so that each heater 41 can be controlled independently.
【００２８】而してワークＣを予熱機構Ａで所望の温度
まで暖めて、加工機構Ｂに送り込み、加工機構Ｂで順次
ワークＣを所望の形状に加工するものである。特に各ダ
イス側金型２やしわ押さえ１２は、ヒートプレート部４
によって所定の温度に維持され、ワークＣはその加工毎
に金型２と当接することで、冷えることなく適正な温度
を維持し、熱膨張率を同一の状態のままで連続加工が施
されるものである。Thus, the work C is heated to a desired temperature by the preheating mechanism A, fed into the processing mechanism B, and the work C is sequentially processed into a desired shape by the processing mechanism B. In particular, each die side die 2 and wrinkle retainer 12 are attached to the heat plate portion 4
The work C is maintained at a predetermined temperature by contacting the mold 2 for each processing, so that the work C is maintained at an appropriate temperature without being cooled and is continuously processed with the same thermal expansion coefficient. It is a thing.
【００２９】即ち温度センサーによる温度感知と、予め
算出している加工すべき形状に対応する最適温度とをも
って、各独立したヒータ４１の出力制御並びに必要に応
じて行うパンチの温度制御（冷却の場合も加熱の場合も
ある）を行うことで、ワークＣの最適な連続加工が実現
できる。尚潤滑部材は成形加工後に剥離や洗浄によって
除去する。That is, with the temperature sensing by the temperature sensor and the optimum temperature corresponding to the shape to be machined calculated in advance, the output control of each independent heater 41 and the temperature control of the punch performed as needed (in the case of cooling) The heating of the workpiece C may be performed), so that the optimum continuous machining of the work C can be realized. The lubricating member is removed by peeling or washing after the molding process.
【００３０】而も本発明では、加工前に予熱機構で予熱
を施すものであるから、加工間隔が短く適正な連続加工
が可能となるものである。即ち図２に例示したような、
曲げ加工では、ワークＣが単にパンチ１に載置されるの
みで、常温のワークＣを供給したとしても、パンチ１１
の加熱によるワークＣの昇温は望めないし、またワーク
Ｃをダイス側に位置させる装置ではダイス２との接触面
積が少ないので、常温のワークＣを供給したとしても、
ワークＣが加工可能な適性温度まで上昇するのに時間を
要することになる。このため必然的に連続加工の時間間
隔が大きくなり、製造能率が悪化する。勿論加工途中で
の曲げ加工等においても、加工間隔が長くなると、放熱
状態となりワークＣの温度低下を招く結果となる。この
対策としてしわ押さえ１２や金型２の温度を高めに設定
すると、ワークＣの昇温が速やかになるが、ワークＣの
温度分布が不均衡となり、加工精度に問題が生ずる。Further, in the present invention, since preheating is performed by the preheating mechanism before processing, the processing interval is short and proper continuous processing is possible. That is, as illustrated in FIG.
In the bending process, the work C is simply placed on the punch 1, and even if the work C at room temperature is supplied, the punch 11
It is not possible to increase the temperature of the work C by heating the work C, and since the contact area with the die 2 is small in the device for positioning the work C on the die side, even if the work C at room temperature is supplied,
It will take time for the work C to rise to an appropriate temperature at which it can be processed. For this reason, the time interval of continuous processing is inevitably increased and the manufacturing efficiency is deteriorated. As a matter of course, even in a bending process during processing, if the processing interval becomes long, a heat dissipation state occurs and the temperature of the work C lowers. If the temperature of the wrinkle retainer 12 and the mold 2 is set to a high value as a countermeasure against this, the temperature of the work C rises quickly, but the temperature distribution of the work C becomes unbalanced, causing a problem in machining accuracy.
【００３１】しかし本発明は、加工前に予熱を施し、ワ
ークＣを所定温度に上昇させた状態で、連続加工を行う
ものであるから、最初の工程から直ちに連続加工作業に
入ることができ、加工間隔を特に長くする必要が無く、
機械能力に応じての加工間隔とすることができ、しわ押
さえ１２や金型２との接触面積が小さい曲げ加工や打ち
抜き加工が最初や途中に介在していたとしても、何ら支
障無く連続加工を実施することができるものである。However, according to the present invention, the pre-heating is carried out before the working, and the continuous working is carried out in the state where the workpiece C is heated to the predetermined temperature. Therefore, the continuous working can be immediately started from the first step, There is no need to lengthen the processing interval,
The machining interval can be set according to the machine capability, and even if bending or punching with a small contact area with the wrinkle retainer 12 and the die 2 is present at the beginning or in the middle, continuous processing can be performed without any trouble. It can be implemented.
【００３２】尚本発明装置は、前記の実施形態に示した
ように、ラム側（上方の作動側）に全てのダイスを組み
込むものではなく、ダイスの一部や全部が下側に組み込
まれるである場合もあることはいうまでもない。本発明
のダイス側は、金型としてのダイスを組み込んでいる方
を意味する。従って図示したダイス側のヒートプレート
部が、全て上部ベースに設けられるのではなく、一部の
ダイスが下部ベースに組み込まれた場合には、当該下部
ベースにダイス側の加熱手段（ヒートプレート部）が設
けられる。The apparatus of the present invention does not incorporate all dies on the ram side (upper working side) as shown in the above embodiment, but a part or all of the dies can be incorporated on the lower side. It goes without saying that there may be cases. The die side of the present invention means a person incorporating a die as a die. Therefore, the illustrated die side heat plate section is not entirely provided on the upper base, but when a part of the die is incorporated in the lower base, the lower side base has heating means on the die side (heat plate section). Is provided.
【００３３】またヒートプレート部４の構成も前記の実
施形態に限定されず、例えば実施形態のように積層的に
金型２（しわ押さえ１２でも同様）を組み込まずに、金
型２の側面にヒートープレート部４を接触する構成でも
良い。その場合には、ヒートプレートの対向面に装着穴
（縦穴）を穿設して、縦棒状ヒートパイプを組み込むよ
うにしても良い。Further, the structure of the heat plate portion 4 is not limited to that of the above-described embodiment, and for example, the mold 2 (similarly to the wrinkle retainer 12) is not incorporated in the side surface of the mold 2 as in the embodiment. The heat plate portion 4 may be in contact with each other. In that case, a mounting hole (vertical hole) may be bored in the facing surface of the heat plate to incorporate the vertical rod-shaped heat pipe.
【００３４】更に金型加熱手段として、ヒートプレート
部を採用する間接加熱の採用に限定されるものではな
く、金型にヒーターを組み込む等の直接加熱手段を採用
しても良い。Further, the die heating means is not limited to the indirect heating employing the heat plate portion, but a direct heating means such as a heater incorporated in the die may be employed.
【００３５】勿論連続加工機構は当然に必要とする公知
の周辺機構を付設しているものである。Needless to say, the continuous machining mechanism is provided with a necessary known peripheral mechanism.
【００３６】[0036]
【発明の効果】以上の通り本発明方法は、ワークを予め
所定温度に暖めておき、少なくとも複数の連続加工型の
各ダイス側を所定温度に昇温させた状態として、予熱し
たワークを連続的に供給し、順次所定の塑性加工を施し
てなるマグネシウム合金の塑性加工方法であり、また本
発明装置は、ワーク予熱機構と、プレス型連続加工機構
とを備え、前記プレス型連続加工機構において、ダイス
側金型の加熱手段を組み込んでなるマグネシウム合金の
塑性加工装置で、マグネシウム合金薄肉製品の塑性加工
製造の実用化を実現したものである。As described above, according to the method of the present invention, the work is preheated to a predetermined temperature in advance, and the preheated work is continuously heated with each die side of at least a plurality of continuous working dies being heated to the predetermined temperature. Is a plastic working method of a magnesium alloy sequentially subjected to a predetermined plastic working, also the apparatus of the present invention, a work preheating mechanism, and a press-type continuous processing mechanism, in the press-type continuous processing mechanism, This is a plastic working apparatus for magnesium alloys that incorporates a heating means for the die on the die side, and has realized the practical use of plastic working of thin magnesium alloy products.
【図面の簡単な説明】[Brief description of drawings]
【図１】本発明装置の実施形態の簡易な説明図。FIG. 1 is a simplified explanatory diagram of an embodiment of the device of the present invention.
【図２】同金型の一例の説明図。FIG. 2 is an explanatory view of an example of the mold.
Ａ 予熱機構 Ｂ プレス型連続加工機構 Ｃ ワーク １ 金型（パンチ側） １１ パンチ １２ しわ押さえ ２ 金型（ダイス側） ３ａ，３ｂ ベース ４ ヒートプレート部 ４１ 棒状ヒータ ４ａ 温度調整部 ５ 断熱部 A preheating mechanism B Press type continuous processing mechanism C work 1 mold (punch side) 11 punches 12 Wrinkle retainer 2 mold (die side) 3a, 3b base 4 Heat plate part 41 Rod heater 4a Temperature control unit 5 Thermal insulation
─────────────────────────────────────────────────────
─────────────────────────────────────────────────── ───
【手続補正書】[Procedure amendment]
【提出日】平成１３年８月１６日（２００１．８．１
６）[Submission date] August 16, 2001 (2001.8.1)
6)
【手続補正１】[Procedure Amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】０００８[Correction target item name] 0008
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【０００８】その内容は、材料としてＡＺ３１他のマグ
ネシウム合金を使用し、試験装置として、発熱体にニク
ロム線の電気抵抗を利用し、ダイスおよびしわ押さえ板
の内縁部、ならびにパンチには冷却水が通せるようにし
た構成を採用し、（イ）パンチ、ダイスとも同一の温度
とした場合（ロ）パンチは水冷し（２０〜６０℃）、ダ
イスは一様な温度に加熱した場合（ハ）パンチは水冷
し、ダイスは内縁を水冷しつつ周辺を加熱して温度勾配
をつけた場合を行い、（イ）に対して（ロ）の場合が、
破断の危険が大きい容器の底付近の強度を常温強度程度
に保持できるため全般的に絞り特性が向上すること、更
に（ハ）では、ダイスに温度勾配をつけることでフラン
ジ部分おいても内側強度が増し破断し難くなることが報
告されている。The contents are as follows: magnesium alloy such as AZ31 is used as the material, the electric resistance of the nichrome wire is used for the heating element as the test device, and cooling water is used for the inner edge of the die and the wrinkle holding plate and the punch. When adopting a structure that allows passage, (a) when the punch and the die have the same temperature (b) when the punch is water-cooled ( 20 to 60 ° C), and when the die is heated to a uniform temperature (c) The punch is water-cooled, the die is water-cooled on the inner edge and the periphery is heated to create a temperature gradient. In the case of (a) to (b),
The strength near the bottom of the container, which has a high risk of breakage, can be maintained at room temperature strength, improving the drawing characteristics in general, and in (c), a temperature gradient is applied to the die to increase the inner strength even at the flange. It has been reported that the cracking resistance increases and it becomes difficult to break.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 須貝 裕之 新潟市鐙西１丁目11番１号 新潟県工業技 術総合研究所内 (72)発明者 平石 誠 新潟市鐙西１丁目11番１号 新潟県工業技 術総合研究所内 (72)発明者 折笠 仁志 新潟市鐙西１丁目11番１号 新潟県工業技 術総合研究所内 (72)発明者 白川 正登 新潟市鐙西１丁目11番１号 新潟県工業技 術総合研究所内 (72)発明者 相田 収平 新潟県長岡市新産４丁目１番14号 新潟県 工業技術総合研究所 中越技術支援センタ ー内 ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Hiroyuki Sugai 1-11-1, Hannishi, Niigata City Niigata Industrial Technology Inside the Institute (72) Inventor Makoto Hiraishi 1-11-1, Hannishi, Niigata City Niigata Industrial Technology Inside the Institute (72) Inventor Hitoshi Orikasa 1-11-1, Hannishi, Niigata City Niigata Industrial Technology Inside the Institute (72) Masato Shirakawa, inventor 1-11-1, Hannishi, Niigata City Niigata Industrial Technology Inside the Institute (72) Inventor Ryohei Aida Niigata Prefecture Nagaoka City New Product 4-1-114 Niigata Prefecture AIST Chuetsu Technical Support Center -In
Claims (8)
所定温度に暖めておき、少なくとも複数の連続加工金型
の各ダイス側を所定温度に昇温させた状態として、予熱
したマグネシウム合金を連続的に順次所定の塑性加工を
施してなることを特徴とするマグネシウム合金の塑性加
工方法。1. A preheated magnesium alloy is continuously heated in a state where a magnesium alloy thin plate to be processed is preliminarily heated to a predetermined temperature, and at least a plurality of dies of continuous processing dies are heated to a predetermined temperature. A plastic working method of a magnesium alloy, characterized in that predetermined plastic working is sequentially performed.
選択的に所定温度に制御して塑性加工を施してなる請求
項１記載のマグネシウム合金の塑性加工方法。2. The punch and the wrinkle retainer on the punch side,
The plastic working method for magnesium alloy according to claim 1, wherein the plastic working is performed by selectively controlling the temperature to a predetermined temperature.
ーク）の予熱機構と、プレス型連続加工機構とを備え、
前記プレス型連続加工機構において、ダイス側金型の加
熱手段を組み込んでなることを特徴とするマグネシウム
合金の塑性加工装置。3. A preheating mechanism for a magnesium alloy thin plate (workpiece) to be machined and a press-type continuous machining mechanism,
A plastic working apparatus for magnesium alloy, characterized in that, in the press-type continuous working mechanism, heating means for the die side die is incorporated.
なるベースに装着する連続加工用金型を、ベース部との
間に断熱部を介在させると共に、適宜な熱源を備えたヒ
ートプレート部と接触させて、所望の温度に制御可能状
態として組み込んでなる請求項３記載のマグネシウム合
金の塑性加工装置。4. As a die side heating means, a continuous processing die attached to a die side base is provided with a heat insulating portion between the base portion and a heat plate portion provided with an appropriate heat source. 4. The magnesium alloy plastic working apparatus according to claim 3, which is brought into contact with and incorporated into a desired temperature in a controllable state.
側のしわ押さえの一部又は全部に対して、所定の熱制御
機能を備えた加熱手段を組み込んでなる請求項３又は４
記載のマグネシウム合金の塑性加工装置。5. A press-type continuous processing mechanism, wherein a heating means having a predetermined heat control function is incorporated in a part or all of the punch-side crease presser.
A plastic working apparatus for the magnesium alloy described.
の間に断熱部を介在させると共に、適宜な熱源を備えた
ヒートプレート部と接触させて所望の温度に制御可能状
態として組み込んでなる請求項５記載のマグネシウム合
金の塑性加工装置。6. The heating means for holding the wrinkle, wherein a heat insulating portion is interposed between the base and the wrinkle holding portion, and the wrinkle holding heating means is brought into contact with a heat plate portion equipped with an appropriate heat source so as to be controllable to a desired temperature. 5. The magnesium alloy plastic working apparatus according to item 5.
装着穴を穿設すると共に、各装着穴に棒状ヒーターを密
挿着し、ダイス側金型又はしわ押さえの一方又は双方の
適宜位置に温度センサを設置し、所望の温度に制御可能
にしてなる請求項４又は６記載のマグネシウム合金の塑
性加工装置。7. A plurality of mounting holes are formed on the side surface or the upper surface of the heat plate portion, and a rod-shaped heater is tightly inserted in each mounting hole, and the die side die or the wrinkle retainer is placed at an appropriate position on one side or on both sides. 7. The plastic working apparatus for magnesium alloy according to claim 4, wherein a temperature sensor is installed so that the temperature can be controlled to a desired temperature.
の一部又は全部に、パンチを加熱又は冷却する温度制御
手段を備えてなる請求項５乃至７記載の何れかのマグネ
シウム合金の塑性加工装置。8. The plastic working apparatus for magnesium alloy according to claim 5, wherein in the press-type continuous working mechanism, part or all of the punch is provided with temperature control means for heating or cooling the punch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001235784A JP2003048026A (en) | 2001-08-03 | 2001-08-03 | Plastic working method for magnesium alloy and device therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001235784A JP2003048026A (en) | 2001-08-03 | 2001-08-03 | Plastic working method for magnesium alloy and device therefor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003048026A true JP2003048026A (en) | 2003-02-18 |
Family
ID=19067173
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001235784A Pending JP2003048026A (en) | 2001-08-03 | 2001-08-03 | Plastic working method for magnesium alloy and device therefor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003048026A (en) |
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| JP2006205173A (en) * | 2005-01-25 | 2006-08-10 | Osaka Industrial Promotion Organization | Magnesium-based material processed product and its production method |
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| JP2007136533A (en) * | 2005-11-22 | 2007-06-07 | Nippon Steel Corp | Forming method using transfer press and transfer press device |
| JP2008126246A (en) * | 2006-11-17 | 2008-06-05 | Niigata Prefecture | Plastic working method for magnesium alloy sheet |
| JP2009082992A (en) * | 2009-01-30 | 2009-04-23 | Nippon Steel Corp | Hot forming method |
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| JP4584109B2 (en) * | 2005-10-14 | 2010-11-17 | 株式会社ミヤタ | Manufacturing method of inflator housing for airbag |
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| JP2008126246A (en) * | 2006-11-17 | 2008-06-05 | Niigata Prefecture | Plastic working method for magnesium alloy sheet |
| JP2009082992A (en) * | 2009-01-30 | 2009-04-23 | Nippon Steel Corp | Hot forming method |
| KR100963796B1 (en) * | 2009-12-29 | 2010-06-17 | 대원강업주식회사 | Manufacturing system by continuous warm rolling press for frame using magnesium panel |
| WO2011081327A2 (en) * | 2009-12-29 | 2011-07-07 | 대원강업 주식회사 | System for manufacturing a frame using a magnesium panel through continuous warm rolling pressing |
| WO2011081327A3 (en) * | 2009-12-29 | 2011-11-17 | 대원강업 주식회사 | System for manufacturing a frame using a magnesium panel through continuous warm rolling pressing |
| JP2013013907A (en) * | 2011-07-01 | 2013-01-24 | Jfe Steel Corp | Warm press forming method for metal plate |
| JP2013086114A (en) * | 2011-10-17 | 2013-05-13 | Tsutsumi Industries Inc | Press bending device of metal plate and press bending method |
| JP2016539009A (en) * | 2013-11-05 | 2016-12-15 | マーティンリア インダストリーズ，インコーポレイテッド | Hot forming mold with improved cooling system |
| EP2886216A1 (en) * | 2013-12-17 | 2015-06-24 | AWEBA Werkzeugbau GmbH | Production method for metal sheets made of magnesium and high-strength aluminium |
| KR20200017816A (en) * | 2018-08-09 | 2020-02-19 | 주식회사 성우하이텍 | Forming method and composite sheet |
| KR102452576B1 (en) | 2018-08-09 | 2022-10-11 | 주식회사 성우하이텍 | Forming method and composite sheet |
| KR20200079016A (en) * | 2018-12-24 | 2020-07-02 | (주)광진기계 | Fabrication method of magnesium part for vehicle |
| KR20200079015A (en) * | 2018-12-24 | 2020-07-02 | (주)광진기계 | Fabrication method of magnesium part for vehicle using movable heater |
| KR102173002B1 (en) | 2018-12-24 | 2020-11-02 | (주)광진기계 | Fabrication method of magnesium part for vehicle using movable heater |
| KR102185912B1 (en) | 2018-12-24 | 2020-12-03 | (주)광진기계 | Fabrication method of magnesium part for vehicle |
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