JP2001179328A - Dies for extruding - Google Patents

Dies for extruding

Info

Publication number
JP2001179328A
JP2001179328A JP36968599A JP36968599A JP2001179328A JP 2001179328 A JP2001179328 A JP 2001179328A JP 36968599 A JP36968599 A JP 36968599A JP 36968599 A JP36968599 A JP 36968599A JP 2001179328 A JP2001179328 A JP 2001179328A
Authority
JP
Japan
Prior art keywords
bearing
die
extruded material
corner
surface roughness
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
Application number
JP36968599A
Other languages
Japanese (ja)
Other versions
JP4315555B2 (en
JP2001179328A5 (en
Inventor
Toshimitsu Tsutsui
俊光 筒井
Yoichi Momo
陽一 百々
Isao Murase
功 村瀬
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Showa Aluminum Can Corp
Original Assignee
Showa Aluminum Corp
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 Showa Aluminum Corp filed Critical Showa Aluminum Corp
Priority to JP36968599A priority Critical patent/JP4315555B2/en
Publication of JP2001179328A publication Critical patent/JP2001179328A/en
Publication of JP2001179328A5 publication Critical patent/JP2001179328A5/ja
Application granted granted Critical
Publication of JP4315555B2 publication Critical patent/JP4315555B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Extrusion Of Metal (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide dies for extruding which prevent Dies Mark from produc ing and rubbish from sticking on the surface. SOLUTION: On the bearing exit part 11 where extruded material is formed, the corner angle part 14 which is formed just behind the bearing 11 must be formed arc shape having curvature radius of 0.2-1.0 mm, or chamfered in the form of straight line having length of 0.2 to 1.0 mm. Furthermore, the roughness on the surface of part 13 above mentioned, must be formed below 9 μm, in the maximum height (Ry).

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】この発明は押出用ダイスに関
する。
The present invention relates to an extrusion die.

【0002】[0002]

【従来の技術および発明が解決しようとする課題】アル
ミニウム等の熱間押出に使用されるダイスは、材料が成
形されるベアリング部の出側の角部が直角に形成されて
いるが、押出時やダイスメンテナンス時にこの角部が欠
損しやすいという問題点があった。前記角部が欠損する
と、ベアリング長さに不均一が生じて押出材料の流出速
度が局部的に速くなってダイスマークと呼ばれるライン
状の欠陥が発生する。
2. Description of the Related Art In a die used for hot extrusion of aluminum or the like, an exit corner of a bearing portion where a material is formed is formed at a right angle. Also, there is a problem that the corners are easily broken during die maintenance. If the corners are lost, the length of the bearing becomes uneven, the flow rate of the extruded material is locally increased, and a linear defect called a dice mark is generated.

【0003】また、ベアリング部直後には退入状の逃げ
部が設けられているが、この逃げ部に押かすが溜まると
その押かすが微細なアルミニウム粉となって押出材の表
面に付着し、表面品質を低下させるという問題点もあっ
た。
[0003] In addition, a recessed escape portion is provided immediately after the bearing portion, and when the scrap is accumulated in the escape portion, the scrap becomes fine aluminum powder and adheres to the surface of the extruded material. There was also a problem of deteriorating quality.

【0004】この発明は、このような技術背景に鑑み、
ダイスマークの発生を防止し、さらに押出材表面への押
かすの付着を抑制しうる押出用ダイスの提供を目的とす
る。
The present invention has been made in view of such technical background,
An object of the present invention is to provide an extrusion die capable of preventing the generation of a die mark and further suppressing the adhesion of debris to the surface of an extruded material.

【0005】[0005]

【課題を解決するための手段】前記目的を達成するため
に、この発明の押出用ダイスは、押出材料が成形される
ベアリング部(11)出側において、ベアリング部(11)
とベアリング部(11)直後に設けられた退入部の逃げ部
(13)との角度(14)が、曲率半径(r)0.2〜1.
0mmの円弧状に形成されているか、または面取り量
(c)0.2〜1.0mmの直線状に面取りされているこ
とを要旨とする。
In order to achieve the above object, an extrusion die according to the present invention comprises a bearing part (11) at a bearing part (11) exit side where an extruded material is formed.
The angle (14) of the escape portion (13) of the retreating portion provided immediately after the bearing portion (11) has a radius of curvature (r) of 0.2 to 1.
The gist is that it is formed in an arc shape of 0 mm or chamfered in a linear shape with a chamfer amount (c) of 0.2 to 1.0 mm.

【0006】また、前記逃げ部(13)の表面粗さが、最
大高さ(Ry)9μm以下に形成されていることがが好
ましい。
It is preferable that the surface roughness of the escape portion (13) is formed to a maximum height (Ry) of 9 μm or less.

【0007】この発明は、全てのタイプの押出用ダイス
を対象とし、ソリッドダイスまたは図1に示すポートホ
ールダイス(1)等のホローダイスの別も問わない。ま
た、ダイスの材質、押出材の中空、中実、押出材の材料
も問わない。
The present invention is applicable to all types of extrusion dies, and does not matter whether it is a solid die or a hollow die such as the porthole die (1) shown in FIG. In addition, the material of the die, the hollow or solid extruded material, and the material of the extruded material are not limited.

【0008】押出用ダイスのベアリング部(11)出側の
角部(14)を円弧状に形成するか、または面取りして角
部(14)を切り欠いた形状に形成しておく。このように
角部(14)を切欠形状に形成することにより、角部(1
4)の部分的な欠損を防止し、押出材料の流れを一様に
保ってダイスマークの発生を抑制する。角部(14)の切
欠形状は円弧状でも直線状に切り欠く面取りのいずれで
も良く、ダイスマークの発生を抑制することができる。
切欠量は、図2(A)に示す円弧状の場合は、曲率半径
(r)を0.2〜1.0mmの範囲とする。0.2mm未満
では欠損防止効果に乏しく、1.0mmを超えても前記効
果が飽和するし、ベアリング長さが短くなり過ぎる。曲
率半径(r)の好ましい下限値は0.3mmであり、好ま
しい上限値は0.6mmである。また、図2(B)に示す
面取りの場合、ベアリング部(11)および逃げ部(13)
における切欠長さとして示される面取量(c)を、円弧
状の場合と同じ理由により、0.2〜1.0mmの範囲と
する。面取量(c)の好ましい下限値は0.3mmであ
り、好ましい上限値は0.6mmである。
The corner (14) of the extrusion die on the exit side of the bearing (11) is formed in an arc shape or chamfered so that the corner (14) is cut out. By forming the corner (14) in a notched shape in this manner, the corner (1) is formed.
4) Prevents partial loss and keeps the flow of the extruded material uniform to suppress the generation of die marks. The cutout shape of the corner portion (14) may be either an arc shape or a straight cutout chamfer, and the occurrence of a die mark can be suppressed.
The notch amount has a radius of curvature (r) in the range of 0.2 to 1.0 mm in the case of the arc shape shown in FIG. If it is less than 0.2 mm, the effect of preventing loss is poor, and if it exceeds 1.0 mm, the effect is saturated and the bearing length becomes too short. A preferred lower limit of the radius of curvature (r) is 0.3 mm, and a preferred upper limit is 0.6 mm. In the case of the chamfer shown in FIG. 2B, the bearing (11) and the relief (13)
The chamfer amount (c) shown as the notch length in the above is set in the range of 0.2 to 1.0 mm for the same reason as in the case of the arc shape. A preferred lower limit of the chamfer amount (c) is 0.3 mm, and a preferred upper limit is 0.6 mm.

【0009】前記角部(14)の所定形状への加工方法
は、特に限定されないが、加工効率が優れている点でダ
イアモンドバイト等による切削を推奨できる。
The method of forming the corner (14) into a predetermined shape is not particularly limited, but cutting with a diamond bite or the like can be recommended because of its excellent processing efficiency.

【0010】また、通常押出用ダイスのベアリング部
(11)は押出材の表面品質を確保するために鏡面に加工
されており、ベアリング部(11)直後に設けられた退入
状の逃げ部(13)との表面粗度の差が大きい。このよう
に、ベアリング部(11)と逃げ部(13)との表面粗度の
差が大きい場合は、逃げ部(13)に溜まる押かすの総量
が増大するとともに、不均一に溜まる傾向がある。この
発明の押出用ダイスでは、ベアリング部(11)出側の角
部(14)の形状によりダイスマークの発生を抑制すると
ともに、逃げ部(13)の表面粗度を小さく滑らかに形成
してベアリング部(11)との表面粗さの差を小さくして、
逃げ部(13)に溜まる押かすの総量を低減するととも
に、付着むらを少なくすることにより、押かすの押出材
(4)表面への付着を抑制しようというものである。
The bearing portion (11) of the extrusion die is usually mirror-finished in order to ensure the surface quality of the extruded material, and a retreating escape portion provided immediately after the bearing portion (11). Large difference in surface roughness from 13). As described above, when the difference in the surface roughness between the bearing portion (11) and the relief portion (13) is large, the total amount of debris accumulated in the relief portion (13) increases and tends to accumulate unevenly. . In the extrusion die of the present invention, the shape of the corner portion (14) on the exit side of the bearing portion (11) suppresses the generation of die marks, and the surface roughness of the relief portion (13) is formed small and smooth. Reduce the difference in surface roughness with the part (11),
By reducing the total amount of debris that accumulates in the escape portion (13) and reducing unevenness in adhesion, the debris is prevented from adhering to the surface of the extruded material (4).

【0011】前記ベアリング部(11)直後の逃げ部(1
3)を表面粗さが最大高さ(Ry)で9μm以下の平滑
面に形成することにより、押かすの付着量および付着む
らを低減することができる。通常、ベアリング部(11)
の表面粗さが最大高さ(Ry)で9μm以下に形成され
ていることを考慮すると、逃げ部(13)の最大高さ(R
y)が9μmを越えるとこれらの表面粗度が大きくなり
すぎて、押かすの付着量と付着むらを低減する効果に乏
しい。好ましい逃げ部(13)の表面粗さは、最大高さ
(Ry)で6μm以下であり、前記効果が顕著となる。
なお、この発明は、逃げ部(13)の表面粗さについて表
面高さ(Ry)の下限値を定めるものではないが、ベア
リング部(11)との表面粗さとの差を小さくするという
趣旨からベアリング部(11)よりも滑らかにすることは
意味がなく、べアリング部(11)と同程度の表面粗さを
好ましい下限値とする。
The relief portion (1) immediately after the bearing portion (11)
By forming 3) on a smooth surface having a maximum surface roughness (Ry) of 9 μm or less, it is possible to reduce the amount and unevenness of the adhering debris. Usually bearing part (11)
In consideration of the fact that the surface roughness is formed to a maximum height (Ry) of 9 μm or less, the maximum height (R
If y) exceeds 9 μm, the surface roughness becomes too large, and the effect of reducing the amount of adhering debris and the uneven adhesion is poor. The preferable surface roughness of the relief portion (13) is 6 μm or less in maximum height (Ry), and the above-mentioned effect is remarkable.
Although the present invention does not set the lower limit of the surface height (Ry) for the surface roughness of the escape portion (13), the difference from the surface roughness of the bearing portion (11) is reduced. It is meaningless to make it smoother than the bearing portion (11), and a surface roughness equivalent to that of the bearing portion (11) is set as a preferable lower limit.

【0012】また、前記表面粗さに加工する方法は、ダ
イアモンドバイト等による切削、バフ研磨、ホーニング
等を例示でき、最大高さ(Ry)9μm以下を達成でき
る限り限定されない。しかし、加工効率が優れている点
で、切削による方法を最も推奨できる。
The method for processing the surface to the above-mentioned surface roughness can be exemplified by cutting with a diamond tool or the like, buffing, honing and the like, and is not limited as long as the maximum height (Ry) of 9 μm or less can be achieved. However, the cutting method can be most recommended because of its excellent processing efficiency.

【0013】この発明の押出用ダイスは、べアリング部
出側の角部が円弧状に形成または直線状に面取りされて
いるため、角部の部分的な欠損がなくダイスマークの発
生を抑制できる。また、逃げ部の表面粗さが最大高さ
(Ry)9μm以下の平滑面に形成されている場合は、
逃げ部への押かすの付着量が少なくかつ付着むらも少な
くなる。このため、逃げ部の押かすが押出材表面に付着
するのを防止あるいは抑制できる。
[0013] In the extrusion die of the present invention, since the corners on the exit side of the bearing portion are formed in an arc shape or chamfered in a straight line, there is no partial chipping of the corners and the generation of die marks can be suppressed. . When the surface roughness of the escape portion is formed on a smooth surface having a maximum height (Ry) of 9 μm or less,
The amount of the residue adhering to the escape portion is small, and the adhesion unevenness is also reduced. For this reason, it is possible to prevent or suppress the debris of the escape portion from adhering to the surface of the extruded material.

【0014】[0014]

【実施例】図1に、この発明の押出用ダイスの具体例で
あるポートホールダイス(1)を示す。
FIG. 1 shows a porthole die (1) which is a specific example of an extrusion die of the present invention.

【0015】前記ポートホールダイス(1)は、押出方
向の前方側に配置される雌型(2)と後方側に配置され
る雄型(3)とが組合されてなる。前記雌型(2)に
は、中空押出材(4)の外周形状を規定するべアリング
部(11)が設けられ、このべアリング部(11)に囲まれ
て円形の成形孔が形成されている。さらに、前記べアリ
ング部(11)の出側に、前方に向けて外方に開いていく
テーパ状の逃げ穴(12)が形成されるとともに、該逃げ
穴(12)内のべアリング部(11)側、即ちべアリング部
(11)直後の位置に、前記成形孔を取り囲んで外力に退
入した状態に、押出方向と直交する平面からなる逃げ部
(13)が形成されている。―方、雄型(3)には、前方
に突出した成形凸部(20)の先端部外周面に、中空押出
材(4)の内周形状を規定するべアリング部(21)が設
けられているとともに、後部側には押出材料が通過する
複数のポート孔(22)がダイスの前後方向に貫通して設
けられている。そして、前記雌型(2)のべアリング部
(11)成形孔内に雄型(3)のべアリング部(21)を嵌
め入れるようにこれら(2)(3)を組み合わせること
によって両者のべアリング部(11)(21)の間に隙間が
形成され、この隙間を押出材料が通過することにより、
横断面円形の中空押出材(4)が押出される。
The porthole die (1) comprises a combination of a female mold (2) arranged on the front side in the extrusion direction and a male mold (3) arranged on the rear side. The female mold (2) is provided with a bearing portion (11) for defining the outer peripheral shape of the hollow extruded material (4), and a circular molding hole is formed by being surrounded by the bearing portion (11). I have. Furthermore, a tapered relief hole (12) that opens outward toward the front is formed on the exit side of the bearing portion (11), and the bearing portion (12) in the relief hole (12) is formed. An escape portion (13) formed of a plane perpendicular to the extrusion direction is formed on the 11) side, that is, at a position immediately after the bearing portion (11), in a state surrounding the forming hole and retreating to an external force. On the other hand, the male mold (3) is provided with a bearing part (21) for defining the inner peripheral shape of the hollow extruded material (4) on the outer peripheral surface of the tip of the molded convex part (20) protruding forward. In addition, a plurality of port holes (22) through which the extruded material passes are provided in the rear portion so as to penetrate in the front-rear direction of the die. Then, by combining these (2) and (3) such that the bearing (21) of the male die (3) is fitted into the forming hole of the bearing (11) of the female die (2), the both bearings are combined. A gap is formed between the ring portions (11) and (21), and the extruded material passes through the gap,
A hollow extruded material (4) having a circular cross section is extruded.

【0016】前記ポートホールダイス(1)の雌型
(2)および雄型(3)の両べアリング部(11)(21)
は、放電加工およびダイヤモンドバイトによる仕上切削
を施して、表面粗さがJIS B0601に基づく最大
高さ(Ry)5μmの平滑面に形成されている。
The female (2) and male (3) bearing portions (11) and (21) of the porthole die (1).
Is subjected to electric discharge machining and finish cutting with a diamond tool to form a smooth surface having a maximum height (Ry) of 5 μm based on JIS B0601.

【0017】前記ポートホールダイス(1)は、外経4
0mm×肉厚1.5mmの管押出用と外経32mm×肉厚1.
5mmの管押出用の2種類の寸法のものに対し、それぞれ
に、前記雌型(2)のべアリング部(11)出側において
べアリング部(11)と逃げ部(13)との角部(14)の形
状と逃げ部(13)の表面粗さの異なる複数のものを用意
した。前記角部(14)は、切削により図2(A)に示すよ
うな曲率半径(r)の円弧状に形成したもの、または図
2(B)に示すような面取量(c)の直線状に面取りし
たもの、あるいは何ら加工しないものとした。また、前
記逃げ部(13)は、べアリング部(11)と同じく放電加
工およびダイヤモンドバイトによる仕上切削を施して所
要粗さに調整し、あるいは何ら表面加工をしないものと
した。各ポートホールダイス(1)の角部(14)の形状
および逃げ部(13)の表面粗さを表1(40Omm管)お
よび表2(32mm管)にまとめて示す。
The porthole die (1) has an outer diameter of 4 mm.
For extruding 0mm x 1.5mm wall thickness pipe and 32mm x wall thickness 1.
For the two types of 5 mm pipe extrusion, the corners of the bearing (11) and the relief (13) on the exit side of the bearing (11) of the female mold (2) are respectively provided. A plurality of (14) shapes and surface relief (13) surface roughnesses were prepared. The corner portion (14) is formed into an arc shape with a radius of curvature (r) as shown in FIG. 2A by cutting, or a straight line with a chamfer amount (c) as shown in FIG. 2B. The shape was chamfered, or no processing was performed. The relief portion (13) was subjected to electrical discharge machining and finish cutting with a diamond tool to adjust the roughness to a required roughness, as in the case of the bearing portion (11), or to perform no surface processing. The shape of the corner (14) of each porthole die (1) and the surface roughness of the relief (13) are summarized in Table 1 (400 mm pipe) and Table 2 (32 mm pipe).

【0018】前記各ポートホールダイス(1)により、
アルミニウム材料であるJIS 3003−H112を
押出材料として、40mm管はビレット加熱温度を450
℃、押出速度を製品速度で30m/分の同―条件で、3
2mm管はビレット加熱温度を440℃、押出速度を製品
速度で45m/分の同―条件でそれぞれ24本のビレッ
トを押出して多数の長尺管を製作した。
Each of the port hole dies (1)
JIS 3003-H112 which is an aluminum material is used as an extruded material, and the billet heating temperature of a 40 mm tube is 450
At an extrusion speed of 30 m / min.
For the 2 mm tube, 24 billets were extruded at a billet heating temperature of 440 ° C. and an extrusion speed of 45 m / min at a product speed to produce a number of long tubes.

【0019】押出後、雌型(2)のべアリング部(11)
出側の角部(14)および逃げ部(13)を肉眼で観察し、
角部(14)の欠損の有無を調べるとともに、逃げ部(1
3)の表面粗さが粗くなるに従って、逃げ部(13)に付
着する押かす量が相対的に多くなり、付着むらも大きく
なることを確認した。また、押出管については、長尺管
について表面のダイスマークの有無を調べ、さらにダイ
スマークの発生しなかった実施例1〜5(40mm管)お
よび実施例11〜15(32mm管)について、長尺管を
長さ300mmに切断した短尺管1200本について外周
表面を肉眼観察し、アルミニウムかすの付着が認められ
たものを不良品とし、不良品率を求めた。これらの結果
を表1および表2に併せて示す。
After extrusion, the bearing part (11) of the female mold (2)
Visually observe the exit corner (14) and relief (13),
Examine the corner (14) for defects, and
It was confirmed that as the surface roughness of (3) became rough, the amount of scraping adhering to the escape portion (13) became relatively large, and the adhesion unevenness also became large. As for the extruded tube, the length of the long tube was checked for the presence of dice marks on the surface. Further, for the examples 1 to 5 (40 mm tube) and the examples 11 to 15 (32 mm tube) in which no dice mark was generated, the length was measured. The outer surface of 1200 short tubes cut into a length of 300 mm was visually inspected, and those with adhering aluminum chips were regarded as defective products, and the defective product ratio was determined. The results are shown in Tables 1 and 2.

【0020】[0020]

【表1】 [Table 1]

【0021】[0021]

【表2】 [Table 2]

【0022】表1および表2の結果から、押出用ダイス
(1)のべアリング部(11)出側の角部(14)を円弧状
に形成または直線状に面取りすることにより、部分的な
欠損を防ぎダイスマークの発生を抑制できることを確認
できた。また、べアリング部(11)直後の逃げ部(13)
の表面粗さを小さく滑らかにすることにより、押出材
(4)表面へのアルミニウムかすの付着を防止あるいは
抑制できることを確認できた。
According to the results shown in Tables 1 and 2, the corner (14) of the extrusion die (1) on the exit side of the bearing portion (11) is formed in an arc shape or chamfered in a straight line, so that a portion is partially formed. It was confirmed that chipping can be prevented and die marks can be suppressed. Escape part (13) immediately after the bearing part (11)
It was confirmed that by making the surface roughness of the extruded material (4) small and smooth, the adhesion of aluminum chips to the surface of the extruded material (4) could be prevented or suppressed.

【0023】なお、本実施例においては、押出材の外経
を規定する雌型(2)のべアリング部(11)側の角部
(14)を加工するとともに逃げ部(13)の表面粗さを調
整することにより、表面品質の優劣について問題となる
ことの多い、押出材(4)の外周面のダイスマークおよ
びアルミニウムかすの付着について検討した。しかし、
本発明を押出材(4)の内径を規定する雄型(3)のべ
アリング部(21)直後の角部(24)および逃げ部(23)
にも適用して、押出材(4)の内周面のダイスマークの
発生およびアルミニウムかすの付着を防止あるいは抑制
できることは言うまでもない。
In the present embodiment, the corner (14) of the female die (2), which defines the outer diameter of the extruded material, on the side of the bearing (11) is machined and the surface roughness of the relief (13) is reduced. The adhesion of die marks and aluminum chips on the outer peripheral surface of the extruded material (4), which often causes a problem with the surface quality by adjusting the thickness, was examined. But,
According to the present invention, a corner portion (24) and a relief portion (23) immediately after the bearing portion (21) of the male mold (3) for defining the inner diameter of the extruded material (4).
Needless to say, it is possible to prevent or suppress the generation of dice marks on the inner peripheral surface of the extruded material (4) and the adhesion of aluminum chips.

【0024】[0024]

【発明の効果】以上の次第で、この発明の押出用ダイス
は、押出材料が成形されるべアリング部出側において、
べアリング部とべアリング部直後に設けられた退入状の
逃げ部との角部が、曲率半径(r)0.2〜1.0mmの
円弧状に形成されているか、または面取量(c)0.2
〜1.0mmの直線状に面取りされているから、角部の部
分的な欠損を防いでダイスマークの発生を抑制すること
ができる。
As described above, according to the extrusion die of the present invention, on the exit side of the bearing portion where the extruded material is formed,
The corner between the bearing portion and the recessed escape portion provided immediately after the bearing portion is formed in an arc shape having a curvature radius (r) of 0.2 to 1.0 mm, or the chamfer amount (c). ) 0.2
Since it is chamfered in a straight line of about 1.0 mm, it is possible to prevent a partial loss of a corner and to suppress the generation of a die mark.

【0025】また、前記逃げ部の表面粗さが最大高さ
(Ry)9μm以下に形成されている場合は、べアリン
グ部と逃げ部との表面粗さの差が小さくなって、逃げ部
に溜まる押かすの付着量および付着むらが低減あるいは
抑制されるため、押出材への押かすの付着を防止あるい
は抑制することができる。ひいては、この押出用ダイス
により製造された押出材をさらに引抜いた場合等に、引
抜管等の表面欠陥をも低減することができる。
When the surface roughness of the clearance is less than the maximum height (Ry) of 9 μm, the difference in surface roughness between the bearing and the clearance is reduced, and the clearance is reduced. Since the amount and unevenness of the accumulated debris are reduced or suppressed, the adhesion of the debris to the extruded material can be prevented or suppressed. As a result, when the extruded material produced by the extrusion die is further drawn, surface defects such as drawn pipes can be reduced.

【図面の簡単な説明】[Brief description of the drawings]

【図1】この発明の押出用ダイスの一実施例を示す縦断
面図である。
FIG. 1 is a longitudinal sectional view showing one embodiment of an extrusion die of the present invention.

【図2】図1の要部拡大図であり、(A)は円弧状に形
成した角部を示し、(B)は面取りした角部を示してい
る。
FIG. 2 is an enlarged view of a main part of FIG. 1, in which (A) shows a corner formed in an arc shape and (B) shows a chamfered corner.

【符号の説明】[Explanation of symbols]

1…押出用ダイス(ポートホールダイス) 11、21…べアリング部 13、23…逃げ部 14、24…角部 1. Extrusion dies (port hole dies) 11, 21 ... Bearing part 13, 23 ... Relief part 14, 24 ... Corner part

───────────────────────────────────────────────────── フロントページの続き (72)発明者 村瀬 功 堺市海山町6丁224番地 昭和アルミニウ ム株式会社内 Fターム(参考) 4E029 MB02 MB08  ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Isao Murase 6-224 Kaiyama-cho, Sakai City Showa Aluminum Co., Ltd. F-term (reference) 4E029 MB02 MB08

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 押出材料が成形されるベアリング部(1
1)出側において、ベアリング部(11)とベアリング部
(11)直後に設けられらた退入部の逃げ部(13)との角
度(14)が、曲率半径(r)0.2〜1.0mmの円弧状
に形成されているか、または面取り量(c)0.2〜
1.0mmの直線状に面取りされていることを特徴とする
押出用ダイス。
A bearing part (1) on which an extruded material is molded.
1) On the exit side, the angle (14) between the bearing portion (11) and the escape portion (13) of the retreating portion provided immediately after the bearing portion (11) has a curvature radius (r) of 0.2 to 1. 0 mm arc-shaped or chamfered amount (c) 0.2 to
An extrusion die having a straight chamfer of 1.0 mm.
【請求項2】 前記逃げ部(13)の表面粗さが、最大高
さ(Ry)9μm以下に形成されている請求項1に記載
の押出用ダイス。
2. The extrusion die according to claim 1, wherein the relief (13) has a surface roughness of a maximum height (Ry) of 9 μm or less.
JP36968599A 1999-12-27 1999-12-27 Extrusion dies Expired - Fee Related JP4315555B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP36968599A JP4315555B2 (en) 1999-12-27 1999-12-27 Extrusion dies

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP36968599A JP4315555B2 (en) 1999-12-27 1999-12-27 Extrusion dies

Publications (3)

Publication Number Publication Date
JP2001179328A true JP2001179328A (en) 2001-07-03
JP2001179328A5 JP2001179328A5 (en) 2007-01-18
JP4315555B2 JP4315555B2 (en) 2009-08-19

Family

ID=18495068

Family Applications (1)

Application Number Title Priority Date Filing Date
JP36968599A Expired - Fee Related JP4315555B2 (en) 1999-12-27 1999-12-27 Extrusion dies

Country Status (1)

Country Link
JP (1) JP4315555B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003071514A (en) * 2001-09-04 2003-03-11 Sumitomo Light Metal Ind Ltd Extruding die for forming hollow member
CN112620372A (en) * 2020-12-23 2021-04-09 太原理工大学 Mold and method for preparing magnesium alloy plate strip with weak basal plane texture by continuous differential extrusion

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103639226B (en) * 2013-12-05 2016-07-06 山东宏泰科技有限公司 The mould of extruding small-bore tubing material and using method thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003071514A (en) * 2001-09-04 2003-03-11 Sumitomo Light Metal Ind Ltd Extruding die for forming hollow member
CN112620372A (en) * 2020-12-23 2021-04-09 太原理工大学 Mold and method for preparing magnesium alloy plate strip with weak basal plane texture by continuous differential extrusion
CN112620372B (en) * 2020-12-23 2022-05-24 太原理工大学 Mold and method for preparing weak basal plane texture magnesium alloy plate strip through continuous differential extrusion

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