JPH10328726A - Manufacture of die for cu hot extrusion - Google Patents

Manufacture of die for cu hot extrusion

Info

Publication number
JPH10328726A
JPH10328726A JP16196497A JP16196497A JPH10328726A JP H10328726 A JPH10328726 A JP H10328726A JP 16196497 A JP16196497 A JP 16196497A JP 16196497 A JP16196497 A JP 16196497A JP H10328726 A JPH10328726 A JP H10328726A
Authority
JP
Japan
Prior art keywords
molded
hot extrusion
die
shape
ring
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP16196497A
Other languages
Japanese (ja)
Inventor
Yasushi Watanabe
靖 渡辺
Original Assignee
Daido Steel Co Ltd
大同特殊鋼株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Daido Steel Co Ltd, 大同特殊鋼株式会社 filed Critical Daido Steel Co Ltd
Priority to JP16196497A priority Critical patent/JPH10328726A/en
Publication of JPH10328726A publication Critical patent/JPH10328726A/en
Pending legal-status Critical Current

Links

Abstract

PROBLEM TO BE SOLVED: To provide the manufacture of the die for the Cu hot extrusion, whose heat check resistance has been improved. SOLUTION: After obtaining a columnar primary formed part 12 by drawing a stock, a disk shape secondary formed part 16 is obtained by performing upsetting forging to the primary formed part 12 in the axial direction. After that, the secondary formed part 16 is perforated, and after making it into a ring shape third formed part 18, by holding and pressing the inner peripheral surface and the outer peripheral surface of the ring shape third formed part 18 by a pair of rolls 22, 24. Ring rolling working performing diameter expansion working is continuously performed along the peripheral direction, and after that, by performing finish rolling, a final die shape is made.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION
【0001】[0001]
【発明の属する技術分野】この発明はCu熱間押出用ダ
イの製造方法に関し、詳しくは耐ヒートチェック性の改
善されたCu熱間押出用ダイの製造方法に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a Cu hot extrusion die, and more particularly to a method for manufacturing a Cu hot extrusion die having improved heat check resistance.
【0002】[0002]
【従来の技術及び発明が解決しようとする課題】Cuの
熱間押出用ダイは、従来、例えばNi基の超耐熱合金で
あるインコネル718を用い、これを延伸することによ
って製造していた。
2. Description of the Related Art Conventionally, a die for hot extrusion of Cu has conventionally been produced by using, for example, Inconel 718, which is a Ni-based super heat-resistant alloy, and stretching it.
【0003】ところでこのCu熱間押出用ダイは、例え
ば約800℃の高温に加熱された状態のCuビレットを
所定形状に押出成形することから(加工中に温度は10
00℃程度まで達する)、表面が繰り返し加熱・冷却さ
れて熱応力を受け、これによりある時間(厳密にはある
回数)押出加工を行うと、図4(A)に示しているよう
に内周側にヒートチェックが発生し、これが熱間押出用
ダイ200の使用寿命を決定してしまうといった問題が
あった。
The Cu hot extrusion die extrudes a Cu billet heated to a high temperature of, for example, about 800 ° C. into a predetermined shape.
(Up to about 00 ° C.), and the surface is repeatedly heated and cooled to receive a thermal stress. When the surface is extruded for a certain time (strictly, a certain number of times), as shown in FIG. There is a problem that a heat check occurs on the side, which determines the service life of the hot extrusion die 200.
【0004】このようなヒートチェックがCu熱間押出
用ダイ200の内周側に多数発生すると、これを用いて
Cuの熱間押出しを行ったときにクラック部202にC
u材料が入り込み、図4(B)に示しているように押出
品204の外周部に上記ヒートチェックに起因した多数
の突起206が生じてしまうため、使用不能状態となっ
てしまうのである。尚208はコア型により成形される
中空部である。
When a large number of such heat checks occur on the inner peripheral side of the Cu hot extrusion die 200, when the Cu hot extrusion die is used to perform hot extrusion, the crack 202 is formed in the crack portion 202.
As shown in FIG. 4B, a large number of projections 206 are generated on the outer peripheral portion of the extruded product 204 due to the heat check, so that the extruded product 204 becomes unusable. Reference numeral 208 denotes a hollow formed by a core mold.
【0005】[0005]
【課題を解決するための手段】本願の発明はこのような
ヒートチェックに対する耐性の高いCu熱間押出用ダイ
を得るための製造方法を提供すべくなされたものであ
る。而して本発明のCu熱間押出用ダイの製造方法は、
素材を鍛造若しくは圧延により延伸して柱状の一次成形
品を得た後、これを軸方向に据込鍛造加工して板状の二
次成形品を得、しかる後穴開け加工を施すことによって
リング状且つ円環状の三次成形品を得た後、該リング状
の三次成形品の内周面と外周面とを一対のロールにて挟
圧し、周方向に沿って連続的に拡径加工を行うリングロ
ーリング加工を施すことにより若しくはその後仕上加工
を施すことにより最終のダイ形状とすることを特徴とす
る(請求項1)。
SUMMARY OF THE INVENTION The present invention has been made to provide a manufacturing method for obtaining a Cu hot extrusion die having a high resistance to such a heat check. Thus, the method for producing a Cu hot extrusion die of the present invention comprises:
The material is stretched by forging or rolling to obtain a columnar primary molded product, which is then upset forged in the axial direction to obtain a plate-shaped secondary molded product. After obtaining an annular and annular tertiary molded product, the inner peripheral surface and the outer peripheral surface of the ring-shaped tertiary molded product are sandwiched by a pair of rolls, and the diameter is continuously expanded along the circumferential direction. The final die shape is obtained by performing a ring rolling process or a finishing process thereafter (claim 1).
【0006】請求項2のCu熱間押出用ダイの製造方法
は、請求項1において、前記一次成形品を円柱形状とな
して前記二次成形品を円板形状となすことを特徴とす
る。
In a second aspect of the present invention, there is provided a method for manufacturing a die for hot extrusion of Cu, wherein the primary molded product is formed into a cylindrical shape and the secondary molded product is formed into a disk shape.
【0007】[0007]
【作用及び発明の効果】上記のように本発明は、素材を
延伸して柱状の一次成形品を得た後、軸方向に据込鍛造
加工し、そして穴開け加工後においてリングローリング
加工を施してリング状成形品を拡径させ、その後必要に
応じて仕上加工を施すことで最終のダイ形状を得るもの
である。
As described above, according to the present invention, the raw material is stretched to obtain a columnar primary molded product, which is then subjected to upsetting forging in the axial direction, and then subjected to ring rolling after drilling. The diameter of the ring-shaped molded product is increased by performing a finishing process as required, thereby obtaining a final die shape.
【0008】従来のCu熱間押出用ダイの製造方法の場
合、基本的に素材を延伸することでダイを得るものであ
ることから、鍛流線、即ちファイバーラインは素材の延
伸方向である軸方向に配向した状態にあり、かかるファ
イバーラインはダイの内周側から外周側に向かって半径
方向に発生及び進行するヒートチェックに対して有効に
阻止作用を発揮しない。
In the conventional method for manufacturing a die for hot extrusion of Cu, since a die is basically obtained by stretching a material, a forging line, that is, a fiber line, is an axis extending in the stretching direction of the material. In such a state, the fiber lines do not effectively inhibit the heat check generated and progressing in the radial direction from the inner peripheral side to the outer peripheral side of the die.
【0009】これに対して本発明は、かかるファイバー
ラインをヒートチェックの発生・進行方向に対して直角
方向、つまりダイの周方向に向くように配向させたこと
を特徴とするものである。
On the other hand, the present invention is characterized in that such a fiber line is oriented so as to be directed at right angles to the direction in which the heat check occurs and proceeds, that is, in the circumferential direction of the die.
【0010】具体的に説明すると、本発明に従って先ず
素材を柱状に延伸したとき、その時点ではファイバーラ
インは柱状の一次成形品の軸方向に配向した状態にあ
る。次にこれを軸方向に据込鍛造加工して板状の二次成
形品としたとき、ファイバーラインは放射方向、つまり
中心部から外周側に向かって配向した状態となる。
More specifically, when the raw material is first drawn into a column shape according to the present invention, the fiber line is at that point in a state of being oriented in the axial direction of the columnar primary molded product. Next, when this is subjected to upsetting forging in the axial direction to obtain a plate-shaped secondary molded product, the fiber line is oriented in the radial direction, that is, from the center to the outer peripheral side.
【0011】そしてその後穴開け加工して得たリング状
の三次成形品をリングローリング加工にて拡径加工する
と、このときファイバーラインは、材料の周方向の肉流
れによって周方向に配向した状態となる。つまり内周側
から外周側に向かって発生・進行するヒートチェックに
対して直角方向に配向した状態となる。このためダイ使
用時において繰り返し熱応力が働いたとき、ヒートチェ
ックに対して上記周方向に配向したファイバーラインが
大きな抵抗力となって働き、この結果、本発明によって
得たCu熱間押出用ダイにあっては、かかるヒートチェ
ックの発生・進行が効果的に抑制され、使用寿命が大き
く延びる効果が得られるのである。
Then, when the ring-shaped tertiary molded product obtained by punching is expanded by ring rolling, the fiber line is in a state of being oriented in the circumferential direction by the circumferential flow of the material. Become. In other words, it is oriented in a direction perpendicular to the heat check that is generated and proceeds from the inner peripheral side toward the outer peripheral side. Therefore, when a thermal stress is repeatedly applied during the use of the die, the fiber line oriented in the circumferential direction acts as a large resistance to the heat check, and as a result, the Cu hot extrusion die obtained by the present invention is obtained. In this case, the occurrence and progress of such a heat check are effectively suppressed, and an effect of greatly extending the service life can be obtained.
【0012】本発明においては、上記一次成形品を円柱
形状となして、その軸方向の据込鍛造加工による二次成
形品を円板形状となすことが望ましい(請求項2)。こ
のようにすれば、二次成形品の段階でこれをリング状且
つ円環状の三次成形品に近い形状となすことができ、三
次成形品を得るに際して二次成形品に対して機械加工を
施す必要を省くことができる。
In the present invention, it is preferable that the primary molded product is formed into a cylindrical shape, and the secondary molded product obtained by upsetting in the axial direction is formed into a disk shape. In this way, at the stage of the secondary molded product, it can be formed into a shape close to a ring-shaped and annular tertiary molded product, and when the tertiary molded product is obtained, the secondary molded product is machined. The need can be eliminated.
【0013】[0013]
【発明の実施の形態】次に本発明の実施形態を以下に詳
述する。図3において、10はCu熱間押出用ダイを示
したもので、図に示しているようにこのダイ10は外周
面及び内周面がそれぞれ円形のリング状をなしており、
外径D1が約150mmφ、内径D2が約100mmφ、
厚みTが30mmの形状をなしている。また軸と直角方
向の両面が平面形状をなしている。
DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail. In FIG. 3, reference numeral 10 denotes a Cu hot extrusion die. As shown in the figure, the die 10 has an outer peripheral surface and an inner peripheral surface each having a circular ring shape.
Outer diameter D 1 is about 150 mm, an inside diameter D 2 of about 100 mm,
The thickness T has a shape of 30 mm. Also, both surfaces perpendicular to the axis have a planar shape.
【0014】図1及び図2は上記押出用ダイ10を得る
ための本例の製造方法を工程順に示したものである。本
例では、先ず図1(I)に示しているように素材を鍛造
若しくは圧延により延伸して円柱状の一次成形品12を
得る。このとき鍛流線、つまりファイバーライン14は
延伸方向、即ち円柱状の一次成形品12の軸方向に配向
した状態となる。
FIGS. 1 and 2 show a manufacturing method of the present embodiment for obtaining the extrusion die 10 in the order of steps. In this example, first, as shown in FIG. 1 (I), the raw material is stretched by forging or rolling to obtain a cylindrical primary molded product 12. At this time, the forging line, that is, the fiber line 14 is oriented in the drawing direction, that is, in the axial direction of the columnar primary molded product 12.
【0015】次に円柱状の一次成形品12を軸方向に据
込鍛造加工して、図1(II)の円板状の二次成形品16
を得る。このときファイバーライン14は放射方向に配
向した状態となる。
Next, the columnar primary molded product 12 is subjected to upsetting forging in the axial direction to obtain a disk-shaped secondary molded product 16 shown in FIG.
Get. At this time, the fiber lines 14 are oriented in the radial direction.
【0016】その後中ぐり加工(軸方向の穴加工)を施
して図1(III)に示すリング状の三次成形品18を得
る。このようにリング状の三次成形品18を得たところ
で、次にリングローリング加工を施して図1(IV)に示
す拡径リング状の四次成形品20を得る。
Thereafter, boring (boring in the axial direction) is performed to obtain a ring-shaped tertiary molded product 18 shown in FIG. 1 (III). After the ring-shaped tertiary molded product 18 is thus obtained, ring rolling is performed to obtain an enlarged ring-shaped quaternary molded product 20 shown in FIG. 1 (IV).
【0017】このリングローリング加工は具体的には次
のようにして行う。即ち一対のロール22,24にてリ
ング状の三次成形品18を内外両側から半径方向に挟圧
し、そしてロール22,24を回転させつつ三次成形品
18を周方向に回して材料を周方向に肉流れさせ、内径
及び外径の拡径加工を行う。
This ring rolling processing is specifically performed as follows. That is, the ring-shaped tertiary molded product 18 is pressed in the radial direction from both the inner and outer sides by the pair of rolls 22 and 24, and the tertiary molded product 18 is rotated in the circumferential direction while rotating the rolls 22 and 24 to rotate the material in the circumferential direction. The meat is allowed to flow, and the inner and outer diameters are expanded.
【0018】このリングローリング加工に際して、(II
I)の三次成形品18において放射状に配向していたフ
ァイバーライン14は周方向の肉流れによって同方向、
つまり周方向に配向した状態となる。
In this ring rolling, (II
The fiber line 14 radially oriented in the tertiary molded product 18 of I) is caused to flow in the same direction by the circumferential meat flow.
That is, it is oriented in the circumferential direction.
【0019】図2(V)は上記リングローリング加工に
よって得られた四次成形品20の形状を示したもので、
本例では引き続きこのようにして得られた四次成形品2
0に対して最終的な機械仕上加工を施し、図3に示す最
終形状,寸法のCu熱間押出用ダイ10を得る。
FIG. 2 (V) shows the shape of the quaternary molded product 20 obtained by the ring rolling process.
In the present example, the quaternary molded product 2 thus obtained is
0 is subjected to final mechanical finishing to obtain a Cu hot extrusion die 10 having the final shape and dimensions shown in FIG.
【0020】[0020]
【実施例】次に本発明の具体的実施例について以下に説
明する。 [実施例1]インコネルX750(Ni−15.5Cr
−7Fe−0.7Al−2.5Ti−1.0(Nb+T
a))からなる素材を鍛造により延伸して上記円柱状の
一次成形品(図1中d1=90mmφ,l=130m
m)12を得た。
Next, specific embodiments of the present invention will be described below. Example 1 Inconel X750 (Ni-15.5Cr)
-7Fe-0.7Al-2.5Ti-1.0 (Nb + T
a)) is stretched by forging to form a columnar primary molded product (d 1 = 90 mmφ, l = 130 m in FIG. 1).
m) 12.
【0021】次に軸方向の据込鍛造加工を施してd2
160mmφ,t=42mmの円板状の二次成形品16
を得、引き続いて穴開け加工を施して内径d3=50m
mφのリング状の三次成形品18を得た。
Next, an upsetting forging process is performed in the axial direction to obtain d 2 =
160 mmφ, t = 42 mm disc-shaped secondary molded product 16
And subsequently drilling to produce an inner diameter d 3 = 50 m
A ring-shaped tertiary molded product 18 of mφ was obtained.
【0022】その後にリングローリング加工を施して外
径d4=172mm,内径d5=82mm,t=40mm
の拡径リング状の四次成形品20得た。尚、このときリ
ングローリング加工は鍛造加工終了時の温度が1150
℃となるような温度条件で行った。
Thereafter, a ring rolling process is performed to obtain an outer diameter d 4 = 172 mm, an inner diameter d 5 = 82 mm, and t = 40 mm.
Of the quaternary molded product 20 in the form of an expanded ring. At this time, the temperature at the end of the forging is 1150 in the ring rolling.
The temperature was adjusted to be ° C.
【0023】そしてこれを次のような条件で固溶化熱処
理及び時効処理を施し、しかる後最終の機械仕上加工を
施して上記の最終形状,寸法のCu熱間押出用ダイ10
を得た。 <固溶化熱処理> 982℃×0.5h:AC <時効処理> 732℃×8h:炉冷(55℃/h) →621℃×8h:AC 得られたCu熱間押出用ダイ10を用いてCuの熱間押
出加工を実施したところ、420回の押出しでヒートチ
ェックが発生した。
This is subjected to a solution heat treatment and an aging treatment under the following conditions, and then to a final mechanical finish to obtain a Cu hot extrusion die 10 having the final shape and dimensions described above.
I got <Solution heat treatment> 982 ° C × 0.5h: AC <Aging treatment> 732 ° C × 8h: Furnace cooling (55 ° C / h) → 621 ° C × 8h: AC Using the obtained Cu hot extrusion die 10 When hot extrusion of Cu was performed, a heat check occurred after 420 extrusions.
【0024】[実施例2]インコネルX750を用い、
上記と同様の工程を経てCu熱間押出用ダイ10を得
た。但し固溶化熱処理及び時効処理は以下の条件とし
た。 <一次固溶化熱処理> 1140℃×2h:WQ <二次固溶化熱処理> 845℃×2h:WQ <時効処理> 720℃×20h:AC このようにして得たCu熱間押出用ダイ10を用いてC
u熱間押出加工を実施したところ、押出回数470回で
ヒートチェックが発生した。
Example 2 Using Inconel X750,
The Cu hot extrusion die 10 was obtained through the same steps as above. However, the solution heat treatment and the aging treatment were performed under the following conditions. <Primary solution heat treatment> 1140 ° C. × 2 h: WQ <Secondary solution heat treatment> 845 ° C. × 2 h: WQ <Aging treatment> 720 ° C. × 20 h: AC Using the Cu hot extrusion die 10 thus obtained. C
u When hot extrusion was performed, a heat check occurred after 470 extrusions.
【0025】[実施例3]実施例1及び実施例2と同じ
インコネルX750を用い、図1及び図2に示すのと同
じ工程に従って図3に示す寸法,形状のCu熱間押出用
ダイ10を得た。但し拡径リング形状の四次成形品20
を得るためのリングローリング加工を、鍛造終了温度が
1100℃となるような温度条件下で行った。尚、固溶
化熱処理及び時効処理は実施例2と同じ条件とした。
Example 3 Using the same Inconel X750 as in Examples 1 and 2, a Cu hot extrusion die 10 having the dimensions and shape shown in FIG. 3 was formed according to the same steps as shown in FIGS. Obtained. However, a quaternary molded product 20 having an expanded ring shape
Was performed under temperature conditions such that the forging end temperature was 1100 ° C. The solution heat treatment and the aging treatment were performed under the same conditions as in Example 2.
【0026】この実施例3において得られたCu熱間押
出用ダイ10を用いてCuの熱間押出加工を実施したと
ころ、押出回数520回でヒートチェックが発生した。
即ち実施例3の場合、実施例1及び実施例2に比べて耐
ヒートチェック性が向上した。これは主にリングローリ
ング加工を行う際の鍛造加工温度を実施例1及び実施例
2に比べて低い温度としたことによるものと考えられ
る。即ちこのようにすることによって、時効処理の際の
析出硬化が促進されたことによるものと考えられる。
When Cu hot extrusion was performed using the Cu hot extrusion die 10 obtained in Example 3, a heat check occurred after 520 extrusions.
That is, in the case of Example 3, the heat check resistance was improved as compared with Examples 1 and 2. It is considered that this is mainly because the forging temperature at the time of performing the ring rolling is lower than those in the first and second embodiments. That is, it is considered that the above-mentioned process promotes the precipitation hardening during the aging treatment.
【0027】[比較例1]上記と同じインコネルX75
0を用い、これを外径160mmφに延伸した。そして
これを所定寸法に切断した上、次の条件で固溶化熱処理
及び時効処理を行い、その後最終の機械仕上加工を施し
て図3に示す形状,寸法のCu熱間押出用ダイ10を得
た。 <一次固溶化熱処理> 1140℃×2h:WQ <二次固溶化熱処理> 845℃×24h:WQ <時効処理> 720℃×20h:AC
Comparative Example 1 Inconel X75 as above
This was stretched to an outer diameter of 160 mmφ. Then, this was cut into a predetermined size, subjected to solution heat treatment and aging treatment under the following conditions, and then subjected to final mechanical finishing to obtain a Cu hot extrusion die 10 having the shape and dimensions shown in FIG. . <Primary solution heat treatment> 1140 ° C × 2h: WQ <Secondary solution heat treatment> 845 ° C × 24h: WQ <Aging treatment> 720 ° C × 20h: AC
【0028】得られたCu熱間押出用ダイ10を用いて
Cuの熱間押出加工を実施したところ、320回の押出
しでヒートチェックが発生した。即ち同じインコネルX
750を用いてCu熱間押出用ダイ10を製造した場合
であっても、上記の据込鍛造加工,リングローリング加
工を施さない場合には早期にヒートチェックが発生し、
耐久寿命は短いものであった。
When Cu hot extrusion was performed using the obtained Cu hot extrusion die 10, a heat check occurred after 320 extrusions. That is, the same Inconel X
Even when the Cu hot extrusion die 10 is manufactured using 750, heat check occurs early if the upsetting forging and ring rolling are not performed,
The durability life was short.
【0029】以上のように実施例1〜3と比較例1との
結果から分かるように、上記据込鍛造加工及びリングロ
ーリング加工を導入することによって耐ヒートチェック
性が効果的に向上する。
As can be seen from the results of Examples 1 to 3 and Comparative Example 1, as described above, the heat check resistance is effectively improved by introducing the upsetting forging and the ring rolling.
【0030】[比較例2]インコネル718(Fe−5
3Ni−19Cr−3Mo−0.5Al−0.9Ti−
5(Nb+Ta))からなる素材を用いて160mmφ
に延伸し、その後所定寸法に切断後、以下の条件で固溶
化熱処理及び時効処理を施し、その後最終の機械仕上加
工を施して図3に示す寸法,形状のCu熱間押出用ダイ
10を得た。
Comparative Example 2 Inconel 718 (Fe-5
3Ni-19Cr-3Mo-0.5Al-0.9Ti-
5 mm (Nb + Ta))
Then, after cutting to a predetermined size, a solution heat treatment and an aging treatment are performed under the following conditions, and then a final mechanical finishing is performed to obtain a Cu hot extrusion die 10 having the size and shape shown in FIG. Was.
【0031】<固溶化熱処理> 980℃×0.5h:WQ <時効処理> 718℃×8h:炉冷(55℃/h) →621℃×8h:AC このようにして得たCu熱間押出用ダイ10を用いてC
uの熱間押出加工を実施したところ、押出回数250回
でヒートチェックが発生した。
<Solution heat treatment> 980 ° C. × 0.5 h: WQ <Aging treatment> 718 ° C. × 8 h: Furnace cooling (55 ° C./h)→621° C. × 8 h: AC Cu hot extrusion thus obtained Using the die 10
When hot extrusion processing of u was performed, a heat check occurred at 250 times of extrusion.
【0032】この比較例2の結果は、素材合金としてイ
ンコネル718を用いるよりもインコネルX750を用
いた方が良好な結果が得られることを表している。
The results of Comparative Example 2 show that better results can be obtained by using Inconel X750 than by using Inconel 718 as the material alloy.
【0033】[実施例4]Co基合金であるステライト
25(L605)(Co−10Ni−20Cr−15
W)からなる素材を鍛造により延伸して実施例1〜3と
同じ形状,寸法の、即ち外径d1=90mmφ,長さl
=130mmの円柱状の一次成形品12を得た。
Example 4 Stellite 25 (L605) (Co-10Ni-20Cr-15) which is a Co-based alloy
The material consisting of W) is stretched by forging and has the same shape and dimensions as those in Examples 1 to 3, ie, the outer diameter d 1 = 90 mmφ and the length l
= 130 mm cylindrical primary molded product 12 was obtained.
【0034】続いて実施例1〜3と同じように図1及び
図2の工程に従ってそれら実施例1〜3と同じ寸法,形
状の拡径リング状の四次成形品20を得た。そして次に
この四次成形品20に対して以下の条件で低温焼鈍し処
理(LA)を施し、しかる後最終機械仕上加工を施して
図3に示す形状,寸法のCu熱間押出用ダイ10を得
た。
Subsequently, in the same manner as in Examples 1 to 3, according to the steps shown in FIGS. 1 and 2, an expanded ring-shaped quaternary molded product 20 having the same size and shape as those of Examples 1 to 3 was obtained. Then, the quaternary molded product 20 is subjected to a low-temperature annealing treatment (LA) under the following conditions, and then to a final mechanical finishing process, to thereby form a Cu hot extrusion die 10 having the shape and dimensions shown in FIG. I got
【0035】但し拡径リング形状の四次成形品20を得
るためのリングローリング加工は、鍛造終了時の温度が
1150℃となるような温度条件で鍛造加工を行った。 <低温焼鈍し処理(LA)> 600℃×3h:AC 次にこの実施例で得られたCu熱間押出用ダイ10を用
いてCuの熱間押出加工を実施したところ、押出回数5
80回でヒートチェックが発生した。
However, in the ring rolling process for obtaining the quaternary molded product 20 having an enlarged ring shape, the forging process was performed under such temperature conditions that the temperature at the end of the forging was 1150 ° C. <Low-Temperature Annealing (LA)> 600 ° C. × 3 h: AC Next, Cu hot extrusion was performed using the Cu hot extrusion die 10 obtained in this example.
A heat check occurred 80 times.
【0036】[実施例5]実施例4と同じ合金からなる
素材を用いて、且つ実施例4と同じ条件でCu熱間押出
用ダイ10を製造した。但し拡径リング状の四次成形品
20を得る際のリングローリング加工の温度条件を、鍛
造終了時の温度が1100℃、つまり実施例4よりも低
い温度となるような温度条件で鍛造加工を行った点のみ
が実施例4と異なっている。そしてこの実施例5で得ら
れたCu熱間押出用ダイ10を用いてCuの熱間押出加
工を実施したところ、押出回数610回でヒートチェッ
クが発生した。
Example 5 A Cu hot extrusion die 10 was manufactured using the same alloy as in Example 4 and under the same conditions as in Example 4. However, the temperature condition of the ring rolling process for obtaining the expanded ring-shaped quaternary molded product 20 was set such that the temperature at the end of the forging was 1100 ° C., that is, a temperature condition lower than that of Example 4. The only difference from the fourth embodiment is that it was performed. When Cu hot extrusion was performed using the Cu hot extrusion die 10 obtained in Example 5, a heat check occurred at 610 extrusions.
【0037】尚、これらの実施例及び比較例において、
ヒートチェックの発生とは押出しの続行ができない程度
のヒートチェックを意味している。この点については後
の実施例及び比較例においても同じである。
In these examples and comparative examples,
The occurrence of a heat check means a heat check to the extent that extrusion cannot be continued. This is the same in the following examples and comparative examples.
【0038】[比較例3]実施例4及び実施例5と同じ
合金からなる素材を延伸して外径d1=90mmφ,長
さl=130mmの図1(I)に示す円柱状の一次成形
品12を得た。次に外径d2=160mmφ,厚みt=
42mmの図1(II)の円板状の二次成形品16を得る
べく、円柱状の一次成形品12を軸方向に据込鍛造加工
したところ、加工中に割れが発生し、以後の加工及びC
uの熱間押出加工は実行できなかった。尚、この据込鍛
造加工の際の加工温度条件は鍛造終了時の温度が110
0℃となるような温度条件とした。
[Comparative Example 3] A raw material made of the same alloy as in Examples 4 and 5 was stretched to form a columnar primary mold having an outer diameter d 1 = 90 mmφ and a length l = 130 mm as shown in FIG. 1 (I). Product 12 was obtained. Next, the outer diameter d 2 = 160 mmφ and the thickness t =
In order to obtain a disk-shaped secondary molded product 16 of FIG. 1 (II) having a diameter of 42 mm, the columnar primary molded product 12 was subjected to an upset forging process in the axial direction. And C
u could not be hot extruded. The processing temperature condition at the time of this upsetting forging is that the temperature at the end of forging is 110.
The temperature condition was set to be 0 ° C.
【0039】[比較例4]実施例4,5及び比較例3と
同じ合金からなる素材を外径160mmφに鍛造により
延伸し、そしてこれを所定寸法に切断した後、これを上
記据込鍛造加工,リングローリング加工を行うことな
く、そのまま低温焼鈍し処理(LA)を施し、そして最
後に機械仕上加工を施して図3に示す寸法,形状のCu
熱間押出用ダイ10を得た。尚、低温焼鈍し処理は実施
例4及び実施例5と同じ条件の下で行った。得られたC
u熱間押出用ダイ10を用いてCuの熱間押出加工を実
施したところ、押出回数350回でヒートチェックが発
生し、使用寿命に達した。
[Comparative Example 4] A material made of the same alloy as in Examples 4, 5 and Comparative Example 3 was forged to an outer diameter of 160 mmφ, cut into predetermined dimensions, and then subjected to the upsetting forging. Without performing ring rolling, a low-temperature annealing treatment (LA) is performed as it is, and finally, a mechanical finishing is performed to obtain Cu having dimensions and shapes shown in FIG.
A die 10 for hot extrusion was obtained. Note that the low-temperature annealing treatment was performed under the same conditions as in Examples 4 and 5. Obtained C
u When hot extrusion of Cu was performed using the hot extrusion die 10, a heat check occurred after 350 extrusions, and the service life was reached.
【0040】以上本発明の実施例を詳述したがこれはあ
くまで一例示であり、本発明はその主旨を逸脱しない範
囲において種々変更を加えた態様で実施可能である。
Although the embodiment of the present invention has been described in detail above, this is merely an example, and the present invention can be implemented in variously modified forms without departing from the gist thereof.
【図面の簡単な説明】[Brief description of the drawings]
【図1】本発明の一実施形態を各工程に従って表した図
である。
FIG. 1 is a diagram illustrating an embodiment of the present invention in accordance with each process.
【図2】同実施形態における図1に続く工程を表した図
である。
FIG. 2 is a view illustrating a step following the step in FIG. 1 in the embodiment.
【図3】Cu熱間押出用ダイの形状を表す図である。FIG. 3 is a view showing the shape of a die for hot extruding Cu.
【図4】本発明の背景説明のための説明図である。FIG. 4 is an explanatory diagram for explaining the background of the present invention.
【符号の説明】 10 Cu熱間押出用ダイ 12 一次成形品 16 二次成形品 18 三次成形品 20 四次成形品 22,24 ロール[Description of Signs] 10 Cu hot extrusion die 12 Primary molded product 16 Secondary molded product 18 Tertiary molded product 20 Quaternary molded product 22, 24 Roll
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 FI B21J 1/04 B21J 1/04 5/06 5/06 Z ──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. 6 Identification code FI B21J 1/04 B21J 1/04 5/06 5/06 Z

Claims (2)

    【特許請求の範囲】[Claims]
  1. 【請求項1】 Cu熱間押出用ダイの製造方法であって
    素材を鍛造若しくは圧延により延伸して柱状の一次成形
    品を得た後、これを軸方向に据込鍛造加工して板状の二
    次成形品を得、しかる後穴開け加工を施すことによって
    リング状且つ円環状の三次成形品を得た後、該リング状
    の三次成形品の内周面と外周面とを一対のロールにて挟
    圧し、周方向に沿って連続的に拡径加工を行うリングロ
    ーリング加工を施すことにより若しくはその後仕上加工
    を施すことにより最終のダイ形状とすることを特徴とす
    るCu熱間押出用ダイの製造方法。
    1. A method for manufacturing a Cu hot extrusion die, wherein a material is stretched by forging or rolling to obtain a columnar primary molded product, which is then upset forged in an axial direction to obtain a plate-shaped primary molded product. After obtaining a secondary molded product, and thereafter obtaining a ring-shaped and annular tertiary molded product by performing perforation processing, the inner peripheral surface and the outer peripheral surface of the ring-shaped tertiary molded product are formed into a pair of rolls. By applying a ring rolling process of continuously expanding the diameter along the circumferential direction or by performing a finishing process thereafter to obtain a final die shape, Production method.
  2. 【請求項2】 請求項1において、前記一次成形品を円
    柱形状となして前記二次成形品を円板形状となすことを
    特徴とするCu熱間押出用ダイの製造方法。
    2. The method for manufacturing a die for hot extrusion of Cu according to claim 1, wherein the primary molded product is formed in a cylindrical shape, and the secondary molded product is formed in a disk shape.
JP16196497A 1997-06-03 1997-06-03 Manufacture of die for cu hot extrusion Pending JPH10328726A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16196497A JPH10328726A (en) 1997-06-03 1997-06-03 Manufacture of die for cu hot extrusion

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16196497A JPH10328726A (en) 1997-06-03 1997-06-03 Manufacture of die for cu hot extrusion

Publications (1)

Publication Number Publication Date
JPH10328726A true JPH10328726A (en) 1998-12-15

Family

ID=15745427

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16196497A Pending JPH10328726A (en) 1997-06-03 1997-06-03 Manufacture of die for cu hot extrusion

Country Status (1)

Country Link
JP (1) JPH10328726A (en)

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CN1101283C (en) * 2000-03-01 2003-02-12 中国贵州航空工业集团安大锻造厂 Large mounting edge integrate forging process for engine and gas turbine
CN102218490A (en) * 2010-12-22 2011-10-19 珍晟T.E.C株式会社 Method for manufacturing of caterpillar idler rim and mould device
CN102228947A (en) * 2011-04-11 2011-11-02 徐州九鼎锻造科技有限公司 Finish rolling forming technique of numerical control ring rolling machine of internal long neck special-shaped wind power flange
CN102357623A (en) * 2011-10-20 2012-02-22 铜陵有色金属集团股份有限公司 Method for processing elastic ring of Kaldo furnace
CN102672439A (en) * 2012-06-18 2012-09-19 西南大学 Liquid die forging rolling composite forming method for H13 hot work die steel unusual section large forging
CN102689153A (en) * 2012-06-18 2012-09-26 西南大学 Liquid die forging/rolling composite forming method for magnesium alloy irregular-section large-size ring piece
CN102689154A (en) * 2012-06-18 2012-09-26 西南大学 Liquid die forging and rolling compound formation method for stainless steel irregular-section large ring piece
CN102689159A (en) * 2012-06-18 2012-09-26 西南大学 Liquid die forging and rolling compound formation method for 6061 aluminum alloy irregular-section large ring piece
CN102689152A (en) * 2012-06-18 2012-09-26 西南大学 Liquid die forging rolling compound forming method for 2014 aluminium alloy large ring member with different cross sections
CN102689163A (en) * 2012-06-18 2012-09-26 西南大学 Liquid die forging rolling compound forming method for large ring member with different cross sections
CN102689158A (en) * 2012-06-18 2012-09-26 西南大学 Liquid forging and rolling composite molding method of nickel-base superalloy hetero-cross-section large ring piece
CN102717237A (en) * 2012-06-28 2012-10-10 江苏金源锻造股份有限公司 Method for forming wind power flange
CN103111562A (en) * 2013-03-15 2013-05-22 中航卓越锻造(无锡)有限公司 Manufacturing method of thick-wall high-drum annular forging
CN103273265A (en) * 2013-05-10 2013-09-04 成都市双流恒生锻造有限公司 Production method for machining locating sleeve for core roller on thin film production line through hammer forging
CN103357803A (en) * 2013-06-09 2013-10-23 大连冶金轴承股份有限公司 Machining method of profiling lower die blank of 22224 aligning spherical roller
CN104153929A (en) * 2014-06-30 2014-11-19 宁波惠山汽配制造有限公司 One-way device spline sleeve and processing method thereof
CN107598045A (en) * 2017-09-27 2018-01-19 马鞍山经纬回转支承有限公司 A kind of ring rolls that can process two pieces ring simultaneously
CN108723089A (en) * 2018-04-27 2018-11-02 马兴法 A kind of roll device of special-shaped ring blank
CN108817093A (en) * 2018-04-27 2018-11-16 马兴法 A kind of special-shaped ring blank forming method
CN109277510A (en) * 2018-11-26 2019-01-29 中国航发沈阳黎明航空发动机有限责任公司 Turning method for rapidly positioning during a kind of open die forging base
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Cited By (23)

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Publication number Priority date Publication date Assignee Title
CN1101283C (en) * 2000-03-01 2003-02-12 中国贵州航空工业集团安大锻造厂 Large mounting edge integrate forging process for engine and gas turbine
CN102218490A (en) * 2010-12-22 2011-10-19 珍晟T.E.C株式会社 Method for manufacturing of caterpillar idler rim and mould device
CN102228947A (en) * 2011-04-11 2011-11-02 徐州九鼎锻造科技有限公司 Finish rolling forming technique of numerical control ring rolling machine of internal long neck special-shaped wind power flange
CN102357623A (en) * 2011-10-20 2012-02-22 铜陵有色金属集团股份有限公司 Method for processing elastic ring of Kaldo furnace
CN102672439A (en) * 2012-06-18 2012-09-19 西南大学 Liquid die forging rolling composite forming method for H13 hot work die steel unusual section large forging
CN102689153A (en) * 2012-06-18 2012-09-26 西南大学 Liquid die forging/rolling composite forming method for magnesium alloy irregular-section large-size ring piece
CN102689154A (en) * 2012-06-18 2012-09-26 西南大学 Liquid die forging and rolling compound formation method for stainless steel irregular-section large ring piece
CN102689159A (en) * 2012-06-18 2012-09-26 西南大学 Liquid die forging and rolling compound formation method for 6061 aluminum alloy irregular-section large ring piece
CN102689152A (en) * 2012-06-18 2012-09-26 西南大学 Liquid die forging rolling compound forming method for 2014 aluminium alloy large ring member with different cross sections
CN102689163A (en) * 2012-06-18 2012-09-26 西南大学 Liquid die forging rolling compound forming method for large ring member with different cross sections
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CN102717237A (en) * 2012-06-28 2012-10-10 江苏金源锻造股份有限公司 Method for forming wind power flange
CN103111562A (en) * 2013-03-15 2013-05-22 中航卓越锻造(无锡)有限公司 Manufacturing method of thick-wall high-drum annular forging
CN103273265A (en) * 2013-05-10 2013-09-04 成都市双流恒生锻造有限公司 Production method for machining locating sleeve for core roller on thin film production line through hammer forging
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