JP3533849B2 - Casting and forging methods and products - Google Patents
Casting and forging methods and productsInfo
- Publication number
- JP3533849B2 JP3533849B2 JP27434096A JP27434096A JP3533849B2 JP 3533849 B2 JP3533849 B2 JP 3533849B2 JP 27434096 A JP27434096 A JP 27434096A JP 27434096 A JP27434096 A JP 27434096A JP 3533849 B2 JP3533849 B2 JP 3533849B2
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- Japan
- Prior art keywords
- forging
- die
- casting
- male
- female
- Prior art date
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- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、押出し工程を経ること
なく鋳造で得られた予成形体を製品形状に鍛造する際に
使用する鋳造・鍛造用金型，その金型を使用した鋳造・
鍛造法及び得られた製品に関する。BACKGROUND OF THE INVENTION The present invention relates to a casting / forging die used for forging a preformed body obtained by casting into a product shape without undergoing an extrusion process, and a casting / forging die using the die.
It relates to the forging method and the products obtained.
【０００２】[0002]
【従来の技術】鍛造用素材は、鋳造ビレットの品質を向
上させるため、鍛造に先立って直接押出し工程を経て表
面欠陥部をディスカードとして除去することにより用意
されていた。このとき、１回塑性加工を加えることによ
る品質向上も検討されている。間接押出し工程を経る場
合には、鋳造ビレットの表面部が押出し材に巻き込まれ
ることから、押出しに先立って鋳造ビレットの表面を切
削していた。最近では、製造コストを節減するため、押
出し工程を省略し鋳造ビレットを直接鍛造する鋳造・鍛
造法が検討されている。この鋳造・鍛造法では、製品形
状に近い予成形体を鋳造で作り、或いは半連続鋳造でビ
レット等を作り、予成形体又はビレット（以下、鋳造材
という）を鍛造している。鍛造は冷間鍛造又は熱間鍛造
の何れでも良いが、大きな製品を得る場合には熱間鍛造
が採用されている。2. Description of the Related Art Forging materials have been prepared by directly extruding prior to forging and removing surface defects as discards in order to improve the quality of cast billets. At this time, quality improvement by adding plastic working once is also being considered. When the indirect extrusion step is performed, the surface portion of the cast billet is caught in the extruded material, so that the surface of the cast billet was cut prior to extrusion. Recently, in order to reduce the manufacturing cost, a casting / forging method in which the extrusion step is omitted and the cast billet is directly forged has been studied. In this casting / forging method, a preformed body close to the product shape is formed by casting, or a billet or the like is formed by semi-continuous casting, and the preformed body or billet (hereinafter referred to as a cast material) is forged. The forging may be either cold forging or hot forging, but hot forging is used for obtaining a large product.
【０００３】[0003]
【発明が解決しようとする課題】鋳造・鍛造法では、鋳
造材の表面欠陥が製品の中に巻き込まれることがある。
そのため、鍛造に先立って、鋳造材の表面変質層を切削
等によって除去する必要がある。そのため、切削工程が
余分に必要とされ、鋳造・鍛造法の長所を十分に活かし
きれていない。本発明は、このような問題を解消すべく
案出されたものであり、鋳造・鍛造金型を改良すること
により、鋳造材の表面を切削する必要をなくし、鋳造材
の直接鍛造を可能にすることを目的とする。In the casting / forging method, surface defects of the cast material may be caught in the product.
Therefore, it is necessary to remove the surface-altered layer of the cast material by cutting or the like prior to forging. Therefore, an extra cutting process is required, and the advantages of the casting / forging method cannot be fully utilized. The present invention has been devised to solve such a problem, and by improving the casting / forging die, it is possible to eliminate the need to cut the surface of the casting material and to directly forge the casting material. The purpose is to do.
【０００４】[0004]
【課題を解決するための手段】本発明の鋳造・鍛造法
は、その目的を達成するため、雌型とその内部に押し込
む雄型からなり、雄型ポンチ部の鍛造方向に直角な断面
形状を、雌型内面の断面形状よりも鍛造素材の表面変質
部厚さ分以上小さくした鋳造・鍛造用金型を使用し、表
面変質層をもつ鋳造スライス材を雌型内部にセットし、
表面変質層を雌型内面と雄型ポンチ部外面との間の隙間
に残しながら雌型の内部に雄型を押込み、雌型面及び雄
型面で形付けられる鍛造品を鍛造することを特徴とす
る。金型としては、雄型のポンチ部外面に、鍛造品の取
出しを容易にするため凸状のフリンジ部を設けたものを
使用することが好ましい。この鋳造・鍛造法では、表面
変質層をもつ鋳造材を押出し工程を経ることなく、スラ
イスしたまま雌型内部にセットし、表面変質層を雌型内
面と雄型ポンチ部外面との間の隙間に残しながら目標形
状に鍛造することができる。[Means for Solving the Problems]Casting / forging method
Push into the female mold and its interior to achieve its purpose
It consists of a male type,Cross section perpendicular to the forging direction of the male punch
Surface modification of the forging material rather than the cross-sectional shape of the female die inner surface
Using a casting / forging die that is smaller than the thickness of the part,
Set the casting slice material with the surface alteration layer inside the female mold,
The surface-altered layer is a gap between the female inner surface and the male punch outer surface.
The male mold into the female mold while leaving the
Characterized by forging a forged product that is shaped by the die surface
It As for the die, the outer surface of the punch of the male die is
The one with a convex fringe part to make it easier to put out
useIt is preferable.With this casting / forging method,surface
A cast material with an altered layer can be slurried without going through the extrusion process.
Set in the female mold with the chair still in place, and put the surface alteration layer in the female mold.
The target shape while leaving a gap between the surface and the outer surface of the male punch.
To forgebe able to.
【０００５】[0005]
【実施の形態】鋳造で得られた予成形体や半連続鋳造で
得られたビレット等の鋳造材の表面には、異物やガスの
巻込み，鋳型による抜熱作用等に起因した偏析層，チル
層等の表面変質層がある。表面変質層が素材に巻込まれ
ると種々の欠陥となるが、本発明においては、鍛造方向
と平行な鋳造材外表面層を雄型と雌型との間にあるクリ
アランスに表面変質層を逃がすことにより、鋳造材の表
面変質層を鍛造に先立って切削除去する工程を省略して
いる。従来の金型を使用した鍛造では、図１に示すよう
に所定厚みにカッティングされた押出し材１を雄型２と
雌型３との間に挿入し、雄型１を所定圧力又は所定高さ
まで下降させて鍛造成形する。このとき、雄型２のポン
チ部外面４と雌型の内面５との間に僅かなクリアランス
があり、押出し材１の外面６と雌型内面５との間にも僅
かなクリアランスがある。これらクリアランスによっ
て、押出し材１が雌型３の内部にスムーズに押し込まれ
る。[Embodiment] The surface of a cast material such as a preformed body obtained by casting or a billet obtained by semi-continuous casting has a segregation layer caused by inclusion of foreign matter or gas, heat removal by a mold, etc. There is a surface alteration layer such as a chill layer. When the surface-altered layer is wound around the material, various defects occur, but in the present invention, the surface-altered layer is allowed to escape to the clearance between the male die and the female die, the outer surface layer of the cast material being parallel to the forging direction. Thus, the step of cutting and removing the surface-altered layer of the cast material prior to forging is omitted. In forging using a conventional die, as shown in FIG. 1, an extruded material 1 cut to a predetermined thickness is inserted between a male die 2 and a female die 3, and the male die 1 is brought to a predetermined pressure or a predetermined height. It is lowered and forged. At this time, there is a slight clearance between the outer surface 4 of the punch portion of the male die 2 and the inner surface 5 of the female die, and also a slight clearance between the outer surface 6 of the extruded material 1 and the inner surface 5 of the female die. Due to these clearances, the extruded material 1 is smoothly pushed into the female die 3.
【０００６】これに対し、本発明の鍛造金型では、図２
に示すように雄型２のポンチ部外面４の大きさを雌型内
面５よりも小さくして両者の間に間隙ｄを形成してい
る。間隙ｄは、鋳造材表層にある表面変質層９の厚みよ
りも大きく、通常は２ｍｍ以上に設定される。この隙間
ｄが鍛造時にメタル溜り部７となる。鍛造用素材８とし
ては、表面を切削加工することなく鋳肌を残したままの
鋳造材が使用され、鋳造材を所定厚みにスライスして雌
型３の内部にセットされる。鍛造用素材８を収容した雌
型３に雄型２を押し込むと、雌型３のラップ部１０に対
応した突起をもつ鍛造品１１に鍛造用素材８が成形され
る。このとき、鍛造用素材８の周囲にあった表面変質層
９は、雌型内面と雄型ポンチ部外面との間の隙間である
メタル溜り部７に入り込み、高さＨの鍛造品１１の周囲
に突出する。すなわち、表面変質層９は、鍛造時に雌型
内面５との摩擦で流動が阻止され、メタル溜り部７及び
雌型内面５の近傍に当初のまま止まっている。他方、ラ
ップ部１０には、良好なメタルが流れ込む。On the other hand, in the forging die of the present invention, as shown in FIG.
As shown in FIG. 5, the outer surface 4 of the punch portion of the male die 2 is smaller than the inner surface 5 of the female die to form a gap d therebetween. The gap d is larger than the thickness of the surface alteration layer 9 on the surface layer of the cast material, and is usually set to 2 mm or more. This gap d becomes the metal reservoir 7 during forging. As the material 8 for forging, a casting material in which a casting surface is left without cutting the surface is used, and the casting material is sliced to a predetermined thickness and set in the female mold 3. When the male die 2 is pushed into the female die 3 containing the forging raw material 8, the forging raw material 8 is formed into a forged product 11 having a protrusion corresponding to the lap portion 10 of the female die 3. At this time, the surface-altered layer 9 around the forging material 8 enters the metal reservoir 7 which is a gap between the female die inner surface and the male die punch portion outer surface, and surrounds the forged product 11 of height H. Project to. That is, the surface-altered layer 9 is prevented from flowing by friction with the female die inner surface 5 during forging, and remains in the vicinity of the metal reservoir portion 7 and the female die inner surface 5 as it is. On the other hand, good metal flows into the lap portion 10.
【０００７】得られた鍛造品１１は、金型から取り出さ
れた後、所定の熱処理が施され、機械加工によって所定
寸法に仕上げられる。このとき、表面変質層９が切削除
去されるので、表面変質層９の巻込みに起因する欠陥の
ない鍛造品１１が得られる。寸法出しのために行われる
鍛造後の切削仕上げは、従来の切削ビレットを使用した
方法でも必要とされる。しかし、この従来法と比較する
とき、本発明では鍛造用素材８である鋳造材の表面切削
が不要となり、しかも押出し工程を経ずに鍛造品１１が
製造される。また、表面変質層９の巻込みがないため、
鍛造品１１を寸法仕上げする際の切削加工量を少なくで
き、歩留りが向上する。鍛造用素材８は、ラップ部１０
等に流入する必要なメタル分の量を補償する高さｈを製
品高さＨに加えた高さに設定される。この鍛造用素材８
を鍛造すると、ラップ部１０や隅部にも十分な量の肉が
行き渡り、良好な品質の鍛造品１１となる。The forged product 11 thus obtained is taken out of the die, subjected to a predetermined heat treatment, and machined to a predetermined size. At this time, since the surface-altered layer 9 is removed by cutting, a forged product 11 having no defects due to the inclusion of the surface-altered layer 9 is obtained. Post-forging cutting finishes performed for sizing are also required with conventional cutting billet methods. However, when compared with this conventional method, according to the present invention, the surface cutting of the cast material which is the forging material 8 is unnecessary, and the forged product 11 is manufactured without the extrusion process. Further, since the surface-altered layer 9 is not involved,
The amount of cutting work when the forged product 11 is dimensionally finished can be reduced, and the yield is improved. The forging material 8 is a lap portion 10.
The height h is set to the product height H to compensate the required amount of metal flowing into the product. This forging material 8
When forging is performed, a sufficient amount of meat is spread to the lap portion 10 and the corners, and the forged product 11 with good quality is obtained.
【０００８】本発明に従った方法によるとき、単純な円
筒状外観をもつものは勿論、雄型２のポンチ部外面４形
状を雌型３内面よりも小さくして表面変質層９を収容す
るメタル溜り部７を形成できる限り、図４に示すような
形状をもつ鍛造品１１も製造される。鍛造品１１の外周
にある表面変質層９を切り離すことにより、製品が得ら
れる。雌型３からの鍛造品１１の取出しは、図５に示す
ようにポンチ部外面４にフリンジ部１２を設けた雄型２
を使用すると容易になる。すなわち、表面変質層９に接
しているポンチ外面４の一部に設けた凸条のフリンジ部
１２は、雌型３から雄型２を上昇させる際に鍛造品１１
と噛み合い、雄型２に係合した状態の鍛造品１１を雌型
３から引き上げる。フリンジ部１２は、ポンチ部外面４
の全周にわたって或いは部分的に形成できるが、全周に
わたって設ける方が金型製作上で有利である。フリンジ
部１２の突出幅ｘは、０．２ｍｍ程度が好ましい。When the method according to the present invention is used, a metal having a simple cylindrical appearance, as well as the outer surface 4 of the punch portion of the male die 2 is made smaller than the inner surface of the female die 3 to accommodate the surface-altered layer 9. As long as the pool 7 can be formed, a forged product 11 having a shape as shown in FIG. 4 is also manufactured. The product is obtained by separating the surface-altered layer 9 on the outer periphery of the forged product 11. Taking out the forged product 11 from the female die 3 is performed by the male die 2 in which the fringe portion 12 is provided on the outer surface 4 of the punch portion as shown in FIG.
Will be easier to use. That is, the convex fringe portion 12 provided on a part of the punch outer surface 4 in contact with the surface-altered layer 9 is a forged product 11 when the male die 2 is lifted from the female die 3.
And the forged product 11 engaged with the male die 2 is pulled up from the female die 3. The fringe portion 12 is the outer surface 4 of the punch portion.
Although it can be formed over the entire circumference or a part of the circumference, it is more advantageous in forming the mold to provide it over the entire circumference. The protrusion width x of the fringe portion 12 is preferably about 0.2 mm.
【０００９】雄型２と共に鍛造品１１を雌型３から引き
抜いた後、雄型２のノック（図示せず）をポンチの中を
下降させ、鍛造品１１を受け皿（図示せず）に落下さ
せ、雄型２から分離する。このとき、表面変質層９にフ
リンジ部１２が位置するので、ノックで突かれた際に変
形しても、後続する機械加工により切削除去される。そ
のため、フリンジ部１２に対応する窪みが表面変質層９
にあるものの、製品としての鍛造品１１には何らの支障
を来さない。After pulling the forged product 11 together with the male die 2 from the female die 3, the knock (not shown) of the male die 2 is lowered in the punch, and the forged product 11 is dropped into a receiving pan (not shown). , Separate from male mold 2. At this time, since the fringe portion 12 is positioned on the surface-altered layer 9, even if the fringe portion 12 is deformed when knocked by the knock, it is cut and removed by the subsequent machining. Therefore, the depression corresponding to the fringe portion 12 is formed in the surface alteration layer 9
However, there is no problem with the forged product 11 as a product.
【００１０】[0010]
【実施例】Ｓｉ：１０．５重量％，Ｆｅ：０．２０重量
％，Ｃｕ：２．９０重量％，Ｔｉ：０．２０重量％，Ｍ
ｎ：０．４９重量％，Ｍｇ：０．５０重量％，Ｓｂ：
０．１６重量％，Ｚｎ：０．０１重量％，残部Ａｌ及び
不純物の組成をもつ溶湯を直径１１７ｍｍのビレットに
半連続鋳造した。このビレットは、表面部の断面ミクロ
組織を図６に示すように、鋳肌部分に空洞が観察され、
表面欠陥が存在していた。このビレットを表面切削する
ことなく、５１０℃×４時間の均質化処理を施した後、
空冷し、高さ２２．４ｍｍの鍛造用素材８にスライスし
た。鍛造用素材８を４８０℃に２０分保持した後、離型
材を塗布した雌型３（図３）内にセットした。なお、雄
型２を２００℃に、雌型３を３００℃に予熱しておい
た。EXAMPLES Si: 10.5 wt%, Fe: 0.20 wt%, Cu: 2.90 wt%, Ti: 0.20 wt%, M
n: 0.49% by weight, Mg: 0.50% by weight, Sb:
A molten metal having a composition of 0.16% by weight, Zn: 0.01% by weight, balance Al and impurities was semi-continuously cast into a billet having a diameter of 117 mm. In this billet, as shown in the sectional microstructure of the surface portion as shown in FIG. 6, cavities were observed in the casting surface portion,
There were surface defects. After subjecting this billet to homogenization treatment at 510 ° C. for 4 hours without surface cutting,
It was air-cooled and sliced into a forging material 8 having a height of 22.4 mm. After holding the forging material 8 at 480 ° C. for 20 minutes, it was set in the female mold 3 (FIG. 3) coated with a release material. The male mold 2 was preheated to 200 ° C and the female mold 3 was preheated to 300 ° C.
【００１１】雄型２には、高さ３．０ｍｍ，突出幅
（ｘ）０．２ｍｍのフリンジ部１２を付けた外径１１５
ｍｍ，高さ（ｈ）１０．０ｍｍのポンチ部をもつ金型を
使用した。雌型３には、高さ３７ｍｍ，幅５．５ｍｍの
ラップ部１０を渦巻状に設けた内径１２０ｍｍの金型を
使用した。この雄型２と雌型３との組合せにより、メタ
ル溜り部７の間隙ｄが片側２．５ｍｍに設定された。雌
型３にセットした鍛造用素材８をポンチ圧力４トン／ｃ
ｍ2 で押圧した。得られた鍛造品１１は、製品高さＨが
１３．２ｍｍ，外周部の高さ（Ｈ＋ｈ）が２３．２ｍｍ
であり、ラップ部１０にはメタルが透き間なく充填され
ていた。次いで、雄型２を鍛造品１１と共に雌型３から
引き抜き、ノック（図示せず）で鍛造品１１を受け皿
（図示せず）に分離した。The male mold 2 has an outer diameter 115 with a fringe portion 12 having a height of 3.0 mm and a protrusion width (x) of 0.2 mm.
A die having a punch portion having a height of mm and a height (h) of 10.0 mm was used. As the female die 3, a die having an inner diameter of 120 mm in which a wrap portion 10 having a height of 37 mm and a width of 5.5 mm was spirally provided was used. By combining the male mold 2 and the female mold 3, the gap d of the metal reservoir 7 was set to 2.5 mm on one side. The forging material 8 set in the female die 3 has a punch pressure of 4 tons / c
Pressed with m 2 . The forged product 11 thus obtained has a product height H of 13.2 mm and an outer peripheral height (H + h) of 23.2 mm.
Therefore, the lap portion 10 was filled with metal without a gap. Next, the male die 2 was pulled out from the female die 3 together with the forged product 11, and the forged product 11 was separated by a knock (not shown) into a pan (not shown).
【００１２】鍛造品１１をＴ６処理（５１０℃×３時間
の溶体化処理→水焼入れ→１７０℃×１０時間で時効処
理）した後、製品外径が１１２．３ｍｍとなるように最
外周から３．８５ｍｍの厚さを切削加工し、最外周部の
表面変質層９を除去し、スクロール用素材を得た。この
スクロール用素材の外周部のミクロ組織を観察したとこ
ろ、鋳造欠陥部の巻込み等がない健全な表面層をもつ製
品であった。比較のため、メタル溜り部７のない雄型２
をもつ従来の金型を用い、表面切削しない鋳造ビレット
を鍛造したところ、表面変質層９の巻込みが多量に発生
し、製品として使用できないものであった。本発明に従
って得られた鍛造品１１をＴ６処理した後の機械的性質
は、引張強さ４３７Ｎ／ｍｍ2 ，０．２％耐力３９３Ｎ
／ｍｍ2 ，伸び２．７％であった。これを押出し棒の鍛
造によって得られた製品と比較すると、伸びが０．２％
程度劣っているに過ぎず、スクロールとして十分使用可
能であることが判った。After the forged product 11 was subjected to T6 treatment (solution treatment at 510 ° C. × 3 hours → water quenching → aging treatment at 170 ° C. × 10 hours), 3 from the outermost circumference so that the outer diameter of the product was 112.3 mm. A thickness of 0.85 mm was cut to remove the surface-altered layer 9 at the outermost peripheral portion to obtain a scroll material. Observation of the microstructure of the outer peripheral portion of this scroll material revealed that the product had a sound surface layer without inclusion of casting defects. For comparison, male type 2 without metal pool 7
When a cast billet without surface cutting was forged by using a conventional die having the above, a large amount of the surface-altered layer 9 was involved and it could not be used as a product. The mechanical properties of the forged product 11 obtained according to the present invention after T6 treatment are as follows: tensile strength 437 N / mm 2 , 0.2% proof stress 393 N.
/ Mm 2 , and the elongation was 2.7%. When this is compared with the product obtained by forging the extruded rod, the elongation is 0.2%.
It was only inferior, and it was found that it could be used as a scroll.
【００１３】[0013]
【発明の効果】以上に説明したように、本発明において
は、雄型ポンチ部の断面形状を雌型内面の断面形状より
も小さくして、雌型の内面と雄型ポンチ部の外面との間
に表面変質層が収容されるメタル溜り部を設けた金型を
使用している。そのため、鋳造時に生成した表面変質層
をもつ鋳造材をそのまま鍛造しても、表面変質層が鍛造
品本体に巻き込まれず、品質が良好な鍛造品が製造され
る。このようにして、本発明によるとき、押出し工程を
経ない鋳造・鍛造法で品質のよい鍛造品が安価に提供さ
れる。As described above, in the present invention, the cross-sectional shape of the male punch portion is made smaller than the cross-sectional shape of the female inner surface so that the inner surface of the female die and the outer surface of the male punch portion are A mold provided with a metal pool portion in which the surface-altered layer is housed is used. Therefore, even if the cast material having the surface-altered layer generated at the time of casting is forged as it is, the surface-altered layer is not caught in the forged product body, and a forged product of good quality is manufactured. In this way, according to the present invention, a forged product of good quality can be provided at low cost by a casting / forging method that does not go through an extrusion process.
【図１】 従来の鍛造金型を使用して押出し材を鍛造し
ている状態FIG. 1 A state in which an extruded material is forged using a conventional forging die.
【図２】 本発明に従った鍛造金型を使用して鍛造用素
材を雌型にセットした状態FIG. 2 shows a state in which a forging material is set in a female die using the forging die according to the present invention.
【図３】 本発明に従った鍛造金型の鍛造終了状態FIG. 3 shows the forging end state of the forging die according to the present invention.
【図４】 本発明で製造される鍛造品の一例FIG. 4 is an example of a forged product manufactured by the present invention.
【図５】 ポンチ部外面にフリンジ部を形成した雄型を
使用した鋳造・鍛造用金型[Fig. 5] Mold for casting / forging using a male mold having a fringe portion formed on the outer surface of the punch portion.
【図６】 表面変質層をもつ鋳造材の断面ミクロ組織を
示す顕微鏡写真FIG. 6 is a micrograph showing a cross-sectional microstructure of a cast material having a surface-altered layer.
１：押出し材 ２：雄型 ３：雌型 ４：ポンチ
部外面 ５：雌型内面
６：押出し材外面 ７：メタル溜り部 ８：鍛造用
素材 ９：表面変質層
１０：ラップ部 １１：鍛造品 １２：フリンジ部
ｄ：雌型内面とポンチ部外面との間隙 Ｈ：製品高さ
ｈ：流入メタル量を補償する高さ ｘ：フリンジ
部の突出幅1: Extruded material 2: Male die 3: Female die 4: Punch part outer surface 5: Female die inner surface 6: Extruded material outer surface 7: Metal pool portion 8: Forging material 9: Surface alteration layer 10: Lap portion 11: Forged product 12: fringe portion d: gap between female die inner surface and punch portion outer surface H: product height h: height for compensating inflowing metal amount x: fringe protrusion width
───────────────────────────────────────────────────── フロントページの続き (72)発明者 山田 達 静岡県庵原郡蒲原町蒲原１丁目34番１号 日本軽金属株式会社 グループ技術セ ンター内 (72)発明者 神尾 一 静岡県庵原郡蒲原町蒲原１丁目34番１号 日本軽金属株式会社 グループ技術セ ンター内 (56)参考文献 特開 昭57−75241（ＪＰ，Ａ) 特開 平７−256387（ＪＰ，Ａ) 特開 平３−23028（ＪＰ，Ａ) 実開 平４−43433（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) B21J 1/00 - 13/14 B21J 17/00 - 19/04 B21K 1/00 - 31/00 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Tatsu Yamada 1-34-1 Kambara, Kambara-cho, Anbara-gun, Shizuoka Japan Light Metal Co., Ltd. Group Technology Center (72) Inventor Isao Kamio Kambara-cho, Anbara-gun, Shizuoka 1-34-1 Nippon Light Metal Co., Ltd. In the group technical center (56) Reference JP-A-57-75241 (JP, A) JP-A-7-256387 (JP, A) JP-A-3-23028 (JP , A) Actual Kaihei 4-43433 (JP, U) (58) Fields investigated (Int.Cl. 7 , DB name) B21J 1/00-13/14 B21J 17/00-19/04 B21K 1/00 -31/00
Claims (4)
り、雄型ポンチ部の鍛造方向に直角な断面形状を、雌型
内面の断面形状よりも鍛造素材の表面変質部厚さ分以上
小さくした鋳造・鍛造用金型を使用し、表面変質層をも
つ鋳造スライス材を雌型内部にセットし、表面変質層を
雌型内面と雄型ポンチ部外面との間の隙間に残しながら
雌型の内部に雄型を押込み、雌型面及び雄型面で形付け
られる鍛造品を鍛造することを特徴とする鋳造・鍛造
法。1. A female die and a male die to be pushed into the female die, and a female die having a cross-sectional shape perpendicular to the forging direction of the male die punch portion.
More than the thickness of the surface-altered part of the forged material than the cross-sectional shape of the inner surface
Using a reduced casting / forging die, it also has a surface-altered layer
Set the casting slice material inside the female mold, and
While leaving it in the gap between the inner surface of the female die and the outer surface of the male punch
Push the male mold into the female mold and shape with the female and male faces
Casting and forging characterized by forging the forged products
Law .
を設けた鋳造・鍛造用金型を使用する請求項１に記載の
鋳造・鍛造法。2. A convex fringe portion on the outer surface of the male punch portion.
The casting / forging die provided with is used.
Casting / forging method .
造された後、Ｔ６処理が施され、機械加工仕上げされた
製品。3. A casting / forging method according to claim 1 or 2.
After being built, it was T6 treated and machined
Product .
造された後、Ｔ６処理が施され、機械加工仕上げされた
スクロール。4. A casting / forging method according to claim 1 or 2.
After being built, it was T6 treated and machined
Scroll .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27434096A JP3533849B2 (en) | 1996-10-17 | 1996-10-17 | Casting and forging methods and products |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27434096A JP3533849B2 (en) | 1996-10-17 | 1996-10-17 | Casting and forging methods and products |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10118735A JPH10118735A (en) | 1998-05-12 |
| JP3533849B2 true JP3533849B2 (en) | 2004-05-31 |
Family
ID=17540299
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27434096A Expired - Fee Related JP3533849B2 (en) | 1996-10-17 | 1996-10-17 | Casting and forging methods and products |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3533849B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4927929B2 (en) * | 2003-02-18 | 2012-05-09 | 昭和電工株式会社 | Coarse shape |
| US7770427B2 (en) | 2003-02-18 | 2010-08-10 | Showa Denko K.K. | Metal forged product, upper or lower arm, preform of the arm, production method for the metal forged product, forging die, and metal forged product production system |
| CN105150583A (en) * | 2015-09-29 | 2015-12-16 | 苏州庄吉模塑科技有限公司 | Two-face metal die |
-
1996
- 1996-10-17 JP JP27434096A patent/JP3533849B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH10118735A (en) | 1998-05-12 |
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