JP2780841B2 - Method for manufacturing high-strength aluminum alloy profile extrusion - Google Patents
Method for manufacturing high-strength aluminum alloy profile extrusionInfo
- Publication number
- JP2780841B2 JP2780841B2 JP2077478A JP7747890A JP2780841B2 JP 2780841 B2 JP2780841 B2 JP 2780841B2 JP 2077478 A JP2077478 A JP 2077478A JP 7747890 A JP7747890 A JP 7747890A JP 2780841 B2 JP2780841 B2 JP 2780841B2
- Authority
- JP
- Japan
- Prior art keywords
- thick
- aluminum alloy
- removal
- strength aluminum
- thin
- 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.)
- Expired - Lifetime
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/02—Making uncoated products
- B21C23/04—Making uncoated products by direct extrusion
- B21C23/14—Making other products
- B21C23/142—Making profiles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C35/00—Removing work or waste from extruding presses; Drawing-off extruded work; Cleaning dies, ducts, containers, or mandrels
- B21C35/02—Removing or drawing-off work
- B21C35/023—Work treatment directly following extrusion, e.g. further deformation or surface treatment
- B21C35/026—Removing sections from the extruded work, e.g. removing a strip to create an open profile
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Of Metal (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 この発明は、薄肉部の一端部に厚肉部を有する、例え
ば横断面Ｔ字状の高力アルミニウム合金製異形押出型材
を製造する方法に関する。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a profiled extruded member made of a high-strength aluminum alloy having, for example, a T-shaped cross section and having a thick portion at one end of a thin portion.
従来の技術及び課題 従来、例えば第２図に示されるような薄肉板部（１）
の一端にこれと直交する厚肉板部（２）を有する横断面
Ｔ字状の型材（３）等の比較的単純形状の6000系等の中
軟質アルミニウム合金製異形型材の製造は、かかる断面
形状の成形孔を有する押出用ダイスに該合金製押出材料
を通すという方法で広く行なわれている。そして、この
押出成形後の若干の形状精度不良を型材（３）にストレ
ッチを施すことによって矯正している。これによって上
記のような中軟質アルミニウム合金製異形型材を形状精
度良く製造することができていた。2. Description of the Related Art Conventionally, a thin plate portion (1) as shown in FIG.
The production of a relatively simple-shaped medium-soft aluminum alloy or other such 6000-series shaped member such as a T-shaped cross-section member (3) having a thick plate portion (2) at one end thereof perpendicular to the cross-section is performed using such a cross-section. It is widely used by passing the alloy extruded material through an extrusion die having a shape forming hole. Then, a slight defect in shape accuracy after the extrusion molding is corrected by stretching the mold material (3). As a result, it was possible to produce the above-mentioned medium-shaped soft aluminum alloy deformed member with good shape accuracy.
ところで、最近、2000系、5000系、7000系等の高力ア
ルミニウム合金製の異形型材製造の要請が高まりつつあ
る。By the way, recently, there is an increasing demand for the production of deformed members made of high-strength aluminum alloys such as the 2000 series, 5000 series, and 7000 series.
そこで、この高力アルミニウム合金を、上記のような
異形状の成形孔を有する押出用ダイスに通し、得られた
型材にストレッチを施して高力アルミニウム製異形型材
を製造することが考えられる。Therefore, it is conceivable to manufacture a high-strength aluminum deformed material by passing the high-strength aluminum alloy through an extrusion die having the above-described irregularly shaped forming holes and applying stretch to the obtained mold material.
しかしながら、この方法では、高力アルミニウム合金
の場合、上記のような比較的単純な形状の異型形材であ
っても形状精度の良好な型材に製造することが実際上不
可能であった。However, according to this method, in the case of a high-strength aluminum alloy, it has been practically impossible to produce a shaped material having a good shape accuracy even with a relatively simple shaped material as described above.
即ち、押出成形された型材に、軟質アルミニウム合金
製の型材の場合よりも著しく大きな曲がり、捩れ、波打
ち等を生じてしまう。これは、異形型材の押出の場合、
高力アルミニウム合金ではダイス成形孔の厚肉板部成形
部分を通過する押出材料と、薄肉板部成形部分を通過す
る押出材料との速度差が大きくなる傾向にあること、等
により、押出材料に出方不良が起きやすくなることによ
る。That is, the extruded mold material is significantly bent, twisted, wavy, and the like as compared with the case of the soft aluminum alloy mold material. This is the case for extrusion of profiled materials.
In the case of high-strength aluminum alloys, there is a tendency that the speed difference between the extruded material that passes through the thick-plate part forming part of the die forming hole and the extruded material that passes through the thin-plate part forming part tends to be large. This is due to poor appearance.
しかも、押出成形された型材にストレッチを施しても
形状の矯正がうまくいかない。これは、特に高力アルミ
ニウム合金の押出の場合、薄肉板部（１）を形成する合
金と、厚肉板部（２）を形成する合金とでは、ダイス成
形孔通過時の加工度の差や、成形孔を通過したのちの冷
却速度の差等で、結晶粒の大きさに差がでて両者間の強
度の差がかなり大きなものとなる。そのため、これにス
トレッチを施すと、薄肉板部（１）と厚肉板部（２）と
の間に伸びの差を生じ、押出による曲がり、捩れ、波打
ち等の矯正がなされるどころか、型材（３）に新な曲が
りを惹起する結果となる。しかも詳細な研究の結果、第
１表及び第２表に示されるように、ストレッチの前後で
薄肉板部（１）、厚肉板部（２）に機械的性質の変化を
生じ、このことがストレッチによる矯正を更に一層困難
にしていることも明らかとなった。Moreover, even if the extruded mold is stretched, the shape cannot be corrected properly. This is because, particularly in the case of extruding a high-strength aluminum alloy, there is a difference in the working degree between the alloy forming the thin plate portion (1) and the alloy forming the thick plate portion (2) when passing through the die forming hole. Due to a difference in cooling rate after passing through the forming hole, a difference in crystal grain size occurs, and a difference in strength between the two becomes considerably large. Therefore, when this is stretched, a difference in elongation is generated between the thin plate portion (1) and the thick plate portion (2), so that bending, twisting, waving, and the like due to extrusion are not corrected. This results in a new bend in 3). Moreover, as a result of detailed research, as shown in Tables 1 and 2, the mechanical properties of the thin plate portion (1) and the thick plate portion (2) were changed before and after stretching. It became clear that straightening by stretching was even more difficult.
この発明は、上記のような従来の問題点を解決し、高
力アルミニウム合金製異形型材を形状精度良く押出製造
することを可能にする方法を提供することを目的とす
る。 SUMMARY OF THE INVENTION An object of the present invention is to solve the conventional problems as described above and to provide a method capable of extruding a high-strength aluminum alloy profiled member with good shape accuracy.
課題を解決するための手段 上記目的において、この発明は、 薄肉部の一端部に厚肉部を有する高力アルミニウム合
金製異形型材を押出成形するに際し、 前記薄肉部の他端部に極薄肉の仮接合部を介して除去
用厚肉部が一体に連接された除去用厚肉部付きの型材を
押出成形し、 次いで、上記押出成形によって不可避的に発生する小
さな曲がり、捩れ、波打ち等の変形をストレッチ矯正
し、 しかるのち該除去用厚肉部付き型材の仮接合部を破断
して除去用厚肉部を分離除去することを特徴とする高力
アルミニウム合金製異形押出型材の製造方法を要旨とす
る。Means for Solving the Problems In the above object, the present invention provides a method for extruding a high-strength aluminum alloy deformed material having a thick part at one end of a thin part, and an ultra-thin part at the other end of the thin part. Extrusion molding of a mold material with a thick part for removal, in which the thick part for removal is integrally connected via a temporary joint, and then deformation such as small bending, twisting, waving, etc. inevitably generated by the extrusion molding A method of manufacturing a high-strength aluminum alloy profiled extrusion material characterized in that the shape is extruded, and then the temporary joining portion of the removal thick part is broken to separate and remove the removal thick part. And
なお、高力アルミニウム合金としては、例えば2000
系、5000系、7000系等のように高強度を有するアルミニ
ウム合金が適用される。In addition, as a high-strength aluminum alloy, for example, 2000
An aluminum alloy having high strength such as a series, 5000 series, and 7000 series is applied.
作用 上記方法では、一端部に厚肉部を有する薄肉部の他端
に極薄肉の仮接合部を介して除去用厚肉部が一体に連設
された除去用厚肉部付きの型材を押出成形し、次いで、
上記押出成形によって不可避的に生じる曲り、捩れ、波
打ち等のストレッチによる矯正を施し、しかるのち該除
去用厚肉部付き型材の仮接合部を破断して除去用厚肉部
を分離除去して異形型材の製造を行うものとしたことに
より、ダイスの成形孔を通過する高力アルミニウム合金
製押出材料のメタルフロー速度が薄肉部の両端で均等化
され、そのため得られた除去用厚肉部付きの型材の曲
り、捩れ、波打ち等が減少されるのに加えて、上記除去
用厚肉部付きの状態で行うストレッチ矯正により新たな
曲がり等を生じることなく的確に精度良く矯正を行うこ
とができる。従って、その後に除去用厚肉部を分離除去
して得られた高力アルミニウム合金製異形型材は、曲
り、捩れ、波打ち等の少ない形状精度に優れたものにな
る。In the method described above, a mold having a thick portion for removal is extruded in which a thick portion for removal is integrally connected to the other end of a thin portion having a thick portion at one end via an extremely thin temporary joint. Molding, then
The extruding process is performed to correct by bending, twisting, waving, and other stretches inevitably caused by the extrusion, and then the temporary thickened portion of the mold with the thick portion for removal is broken to separate and remove the thick portion for removal to obtain an irregular shape. By performing the production of the mold material, the metal flow rate of the high-strength aluminum alloy extruded material passing through the forming hole of the die is equalized at both ends of the thin part, and thus the obtained thick part with removal In addition to reducing the bending, twisting, and waving of the shape material, the straightening can be performed accurately and accurately by the stretch straightening performed in the state with the thick portion for removal without causing new bending or the like. Therefore, the high-strength aluminum alloy shaped member obtained by separating and removing the thick portion for removal afterwards has excellent shape accuracy with little bending, twisting, waving, and the like.
実施例 以下に、実施例を説明する。Examples Examples will be described below.
この実施例では、第２図に示されるような薄肉板部
（１）の一端に直交状態に厚肉板部（２）を有する横断
面Ｔ字状の高力アルミニウム合金製異形型材（３）を製
造する。In this embodiment, a high-strength aluminum alloy profiled member (3) having a T-shaped cross section and having a thick plate portion (2) orthogonal to one end of a thin plate portion (1) as shown in FIG. To manufacture.
この形状の型材（３）の製造は、まず、高力アルミニ
ウム合金を用いて、第１図に示されるような横断面Ｈ字
状の型材（４）を押出成形する。即ち、厚肉板部（２）
の存在しない側の薄肉板部（１）の端部に除去用厚肉部
（５）（５）を一体成形する。この除去用厚肉部（５）
（５）は、薄肉板部（１）の当該端部の上方位置及び下
方位置に配されて、極薄肉の仮接合部（６）（６）を介
して当該端部に連設されたものに成形する。In manufacturing the mold member (3) having this shape, first, a high-strength aluminum alloy is used to extrude a mold member (4) having an H-shaped cross section as shown in FIG. That is, the thick plate portion (2)
The removal thick portions (5) and (5) are integrally formed at the end of the thin plate portion (1) on the side where no is present. This thick part for removal (5)
(5) is disposed at an upper position and a lower position of the end of the thin plate portion (1), and is connected to the end via the extremely thin temporary joints (6) and (6). Mold into
この除去用厚肉部（５）（５）の合計の断面積の大き
さは、ダイスの成形孔を通過する高力アルミニウム合金
のメタルフロー速度の対称性を考慮して適宜決定される
が、通常は、厚肉板部（２）の0.6〜1.0倍の範囲、特に
第２図のような形状の型材（１）の場合、0.7倍程度が
適当である。The size of the total cross-sectional area of the removal thick portions (5) and (5) is appropriately determined in consideration of the symmetry of the metal flow speed of the high-strength aluminum alloy passing through the forming hole of the die. Usually, the thickness is suitably in the range of 0.6 to 1.0 times the thickness of the thick plate portion (2), and particularly about 0.7 times in the case of the shape member (1) having the shape shown in FIG.
また、除去用厚肉部（５）（５）の高さは、第１図に
示されるように、押出成形後の型材（４）をテーブルに
載置した際に安定状態に載置され薄肉部（１）に大きな
湾曲変形を生じないように、厚肉板部（２）と略同じ高
さに設定するのが望ましい。As shown in FIG. 1, the height of the removal thick portions (5) and (5) is set in a stable state when the extruded mold member (4) is placed on a table and is thin. It is desirable that the height is set to be substantially the same as that of the thick plate portion (2) so as not to cause large curved deformation in the portion (1).
次いで、上記押出成形により型材（４）に不可避的に
発生する小さな曲がり、捩れ、波打ち等をストレッチに
より矯正する。この矯正は、除去用厚肉部（５）（５）
を分離除去する前に行うものとする。この段階で矯正を
行うことにより、型材（４）の強度分布は薄肉板部
（１）の中央部を挟んである程度の対称性が存在してい
るので、ストレッチによる曲がりはほとんど起こらず、
押出成形時に生じた小さな曲り、捩れ、波打ち等も略完
全に矯正され、形状精度の一段と高い型材（３）を得る
ことができる。Next, small bending, twisting, waving, and the like, which are inevitably generated in the mold (4) by the extrusion molding, are corrected by stretching. This correction is performed by removing the thick part (5) (5)
Before separation and removal. By performing the correction at this stage, since the strength distribution of the mold member (4) has a certain degree of symmetry across the center of the thin plate portion (1), the bending due to the stretch hardly occurs.
Small bending, twisting, waving, and the like generated during extrusion molding are almost completely corrected, and a mold material (3) with higher shape accuracy can be obtained.
そして、上記型材（４）の矯正後、仮接合部（６）
（６）を破断し、両除去用厚肉部（５）（５）を薄肉板
部（１）の端部から分離除去する。これにより、第２図
に示されるような所期する異形型材（３）が製造され
る。And after straightening of the above-mentioned mold material (4), temporary joining part (6)
(6) is broken, and the thick portions (5) and (5) for removal are separated and removed from the end of the thin plate portion (1). In this way, the desired shaped member (3) as shown in FIG. 2 is produced.
なお、この分離は、プレスで仮接合部（６）（６）を
切断する方法や、あるいは型材（４）の外面に振動子を
押し当てて、強制振動を付与することにより仮接合部
（６）（６）に疲労破壊を生じせしめて分離する方法な
どが採用される。The separation is performed by a method of cutting the temporary joints (6) and (6) with a press or by pressing a vibrator against the outer surface of the mold member (4) to apply forced vibration to the temporary joints (6) and (6). And (6) a method of causing fatigue fracture and separating them is adopted.
なお、本発明方法で製造される型材は、上記のような
断面Ｔ字状のものの限定されるものではなく、要は、薄
肉部の一端部に厚肉部を有するものであれば、いずれの
断面形状の型材にも適用することができる。例えば、第
３図に示されるように、２つの薄肉板部（８）（８）の
各一端部に厚肉板部（９）を有する＋字状断面の型材
（10）を製造する場合も、薄肉板部（８）（８）の各他
端部に仮想線で示されるような除去用厚肉部（11）を一
体に成形して、これを後で分離除去することにより、形
状精度に優れた断面＋字状の型材（10）を製造すること
ができる。また、厚肉部と薄肉部とが横断面くさび状に
連続するような型材の場合にも薄肉側に除去用厚肉部を
一体成形することにより所期する形状の型材を製造しう
る。In addition, the shape | mold material manufactured by the method of this invention is not limited to the thing of a T-shaped cross section as mentioned above, In short, as long as it has a thick part at one end part of a thin part, any The present invention can also be applied to a cross-sectional shape member. For example, as shown in FIG. 3, it is also possible to manufacture a + -shaped cross section (10) having a thick plate portion (9) at one end of each of two thin plate portions (8) and (8). The thick part for removal (11) as shown by the phantom line is integrally formed with each other end of the thin plate parts (8) and (8), and this is separated and removed later, so that the shape accuracy is improved. It is possible to manufacture a cross-section shape (10) having an excellent cross section. Further, even in the case of a mold material in which a thick portion and a thin portion are continuous in a wedge shape in a cross section, a mold material having a desired shape can be manufactured by integrally molding the removal thick portion on the thin side.
発明の効果 上述の次第で、この発明の方法は、一端部に厚肉部を
有する薄肉部の他端部に極薄肉の仮接合部を介して除去
用厚肉部が一体に連設された除去用厚肉部付きの型材を
押出成形し、次いで、上記押出成形によって不可避的に
発生する小さな曲がり、捩れ、波打ち等の変形をストレ
ッチ矯正し、しかるのち該除去用厚肉部付き型材の仮接
合部を破断して除去用厚肉部を分離除去して異形型材の
製造を行うものであるから、ダイスの成形孔を通過する
高力アルミニウム合金製押出材料のメタルフロー速度が
薄肉部の両端で均等化され、そのため得られた除去用厚
肉部付きの型材の曲り、捩れ、波打ち等が減少される。
加えて、上記除去用厚肉部付きの状態で型材のストレッ
チ矯正を行うことにより、ストレッチによる新たな曲が
り等を生じることなく、的確に精度良く矯正を行うこと
ができる。従って、除去用厚肉部を分離除去して得られ
た高力アルミニウム合金製異形型材は、曲り、捩れ、波
打ち等の少ないないものになって、形状精度に優れた高
力アルミニウム合金製異形型材に押出製造することがで
きる。Effect of the Invention As described above, according to the method of the present invention, the thick part for removal is integrally connected to the other end of the thin part having the thick part at one end via the extremely thin temporary joint. Extrusion of a mold with a thick part for removal is performed, and then deformation such as small bending, twisting, and waving inevitably generated by the extrusion is stretch-corrected. Since the deformed material is manufactured by breaking the joint and separating and removing the thick part for removal, the metal flow rate of the high-strength aluminum alloy extruded material passing through the forming hole of the die is reduced at both ends of the thin part. The bending, twisting, waving, and the like of the obtained profile having a thick portion for removal are reduced.
In addition, by performing the stretch correction of the shape material in the state with the thick part for removal, the correction can be performed accurately and accurately without causing a new bending or the like due to the stretch. Therefore, the deformed high-strength aluminum alloy material obtained by separating and removing the thick part for removal has little bending, torsion, waving, etc., and is a high-strength aluminum alloy deformed material having excellent shape accuracy. Extrusion can be manufactured.
第１図は本発明方法において押出成形する型材の断面斜
視図、第２図は本発明方法によって製造する高力アルミ
ニウム合金製型材の断面斜視図、第３図は本発明方法に
おいて押出成形する他の例にかかる型材の断面斜視図で
ある。 （１）（８）……薄肉板部（薄肉部）、（２）（９）…
…厚肉板部（厚肉部）、（３）（10）……高力アルミニ
ウム合金製異形型材、（４）……除去用厚肉部付き型
材、（５）（11）……除去用厚肉部、（６）……仮接合
部。FIG. 1 is a sectional perspective view of a mold material extruded by the method of the present invention, FIG. 2 is a sectional perspective view of a high-strength aluminum alloy mold material produced by the method of the present invention, and FIG. It is a cross-sectional perspective view of the shape | mold material concerning the example of FIG. (1) (8) ... thin plate part (thin part), (2) (9) ...
... Thick plate part (thick part), (3) (10) ... High-strength aluminum alloy deformed member, (4) ... Removal member with thick part, (5) (11) ... Removal Thick portion, (6) ... temporary joint.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭62−282724（ＪＰ，Ａ) 特開 昭63−76728（ＪＰ，Ａ) 特公 昭53−40013（ＪＰ，Ｂ１) (58)調査した分野(Int.Cl.6，ＤＢ名) B21C 23/14────────────────────────────────────────────────── ─── Continued on the front page (56) References JP-A-62-282724 (JP, A) JP-A-63-76728 (JP, A) JP-B-53-40013 (JP, B1) (58) Field (Int.Cl. 6 , DB name) B21C 23/14
Claims (1)
ミニウム合金製異形型材を押出成形するに際し、 前記薄肉部の他端部に極薄肉の仮接合部を介して除去用
厚肉部が一体に連設された除去用厚肉部付きの型材を押
出成形し、 次いで、上記押出成形によって不可避的に発生する小さ
な曲がり、捩れ、波打ち等の変形をストレッチ矯正し、 しかるのち該除去用厚肉部付き型材の仮接合部を破断し
て除去用厚肉部を分離除去することを特徴とする高力ア
ルミニウム合金製異形押出型材の製造方法。When extruding a high-strength aluminum alloy deformed member having a thick portion at one end of a thin portion, a thick portion for removal is provided at the other end of the thin portion via an extremely thin temporary joint. Extrusion molding of a mold material with a thick portion for removal in which the parts are integrally connected, and then stretch-correcting deformation such as small bending, twisting, and waving inevitably generated by the extrusion molding, and then removing the material. A method for producing a high-strength aluminum alloy profile extrusion die, characterized in that the thick part for removal is separated and removed by breaking the temporary joint part of the die with the thick part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2077478A JP2780841B2 (en) | 1990-03-26 | 1990-03-26 | Method for manufacturing high-strength aluminum alloy profile extrusion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2077478A JP2780841B2 (en) | 1990-03-26 | 1990-03-26 | Method for manufacturing high-strength aluminum alloy profile extrusion |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03275212A JPH03275212A (en) | 1991-12-05 |
| JP2780841B2 true JP2780841B2 (en) | 1998-07-30 |
Family
ID=13635095
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2077478A Expired - Lifetime JP2780841B2 (en) | 1990-03-26 | 1990-03-26 | Method for manufacturing high-strength aluminum alloy profile extrusion |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2780841B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITVR20040115A1 (en) * | 2004-07-14 | 2004-10-14 | Gianfranco Natali | METHOD OF OPTIMIZATION OF AN EXTRUSION PROCEDURE OF AN ALUMINUM PROFILE |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62282724A (en) * | 1986-05-30 | 1987-12-08 | Showa Alum Corp | Manufacture of precise half hollow extrusion material |
-
1990
- 1990-03-26 JP JP2077478A patent/JP2780841B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03275212A (en) | 1991-12-05 |
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