JPH0733561B2 - Method of manufacturing tubular member with flange - Google Patents
Method of manufacturing tubular member with flangeInfo
- Publication number
- JPH0733561B2 JPH0733561B2 JP13324489A JP13324489A JPH0733561B2 JP H0733561 B2 JPH0733561 B2 JP H0733561B2 JP 13324489 A JP13324489 A JP 13324489A JP 13324489 A JP13324489 A JP 13324489A JP H0733561 B2 JPH0733561 B2 JP H0733561B2
- Authority
- JP
- Japan
- Prior art keywords
- thick
- flange
- tubular member
- thin
- tubular
- 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
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Description
【発明の目的】 （産業上の利用分野） 本発明は、例えばロケットモーターのノズル部品のよう
な、中空形状で周囲にフランジを備えた筒状部材を熱処
理型アルミニウム合金を素材として製造するのに利用さ
れるフランジ付き筒状部材の製造方法に関するものであ
る。 （従来の技術） 上記のような航空宇宙機器部品用の熱処理型アルミニウ
ム合金としては、例えば昭和58年４年25日に丸善株式会
社が発行した「増補版 航空宇宙工学便覧」の第514頁
に記載されているように、Al−Cu−Mg系（JIS 2000
系）,Al−Mg−Si系（JIS 6000系）,Al−Zn−Mg系（JIS
7000系）などのものがある。 従来、これらの熱処理型アルミニウム合金を素材とし
て、上記のようなフランジを備えた筒状部材を製造する
に際しては、上記熱処理型アルミニウム合金よりなる鋳
造材を鍛造加工により、第３図（ａ）に示すような厚肉
状の筒状素材100に形成し、次いで前記筒状素材100に対
して溶体化処理を施し、続いて、前記溶体化処理後の残
留応力を除去するために、前記筒状素材（100）に対し
て、第３図（ｂ）に示すように、その厚さ方向に冷間圧
縮を行ったあと、当該冷間圧縮材101に時効処理を施
し、さらに切削加工を行うことによって、図中に破線で
示すような形状のフランジ102aを備えたフランジ付き筒
状部材102を得るようにしていた。 （発明が解決しようとする課題） しかしながら、このような従来のフランジ付き筒状部材
の製造方法にあっては、鍛造加工によって形成する筒状
素材100は、第３図（ａ）に示すようにフランジ102aを
考慮した厚肉形状に形成されており、溶体化処理時にお
ける処理品である筒状素材100には最終製品であるフラ
ンジ付き筒状部材102として使用されない余肉部が多く
含まれていて、肉厚が必要以上に大きなものとなっいる
ことから、溶体化処理の効果が十分でなく、目標として
いる高強度のものが確保できないという課題があった。 （発明の目的） 本発明は、上記のような課題に着目してなされたもの
で、溶体化処理による熱処理効果を高めると共に、溶体
化処理により発生する残留応力の除去効果を十分でかつ
均一なものとして、熱処理型アルミニウム合金を素材と
する高強度かつ高靱性のフランジ付き筒状部材を提供す
ることを目的としている。An object of the present invention is to manufacture a tubular member having a hollow shape and provided with a flange on its periphery, such as a nozzle part of a rocket motor, using a heat-treatable aluminum alloy as a raw material. The present invention relates to a method for manufacturing a tubular member with a flange used. (Prior Art) As a heat treatment type aluminum alloy for aerospace equipment parts as described above, see, for example, page 514 of "Augmented Aerospace Engineering Handbook" issued by Maruzen Co., Ltd. on April 25, 1983. As described, Al-Cu-Mg system (JIS 2000
System), Al-Mg-Si system (JIS 6000 system), Al-Zn-Mg system (JIS
7000 series) and others. Conventionally, when a tubular member having the above-mentioned flange is manufactured using these heat-treatable aluminum alloys as raw materials, a cast material made of the heat-treatable aluminum alloy is forged into Formed into a thick tubular material 100 as shown, then subjecting the tubular material 100 to a solution treatment, and subsequently to remove the residual stress after the solution treatment, the tubular material As shown in FIG. 3 (b), the material (100) is cold-compressed in its thickness direction, and then the cold-compressed material 101 is subjected to an aging treatment and further cut. Thus, the flanged tubular member 102 having the flange 102a having the shape shown by the broken line in the drawing is obtained. (Problems to be Solved by the Invention) However, in such a conventional method of manufacturing a tubular member with a flange, the tubular material 100 formed by forging is as shown in FIG. 3 (a). It is formed in a thick shape considering the flange 102a, and the tubular material 100 that is a processed product at the time of solution treatment contains many excess parts that are not used as the flanged tubular member 102 that is the final product. However, since the wall thickness is unnecessarily large, there is a problem that the effect of the solution treatment is not sufficient and the target high strength one cannot be secured. (Object of the invention) The present invention has been made by paying attention to the problems as described above, and enhances the heat treatment effect by the solution heat treatment, and the effect of removing the residual stress generated by the solution heat treatment is sufficient and uniform. It is an object of the present invention to provide a high-strength and high-toughness flanged tubular member made of a heat-treatable aluminum alloy.
（課題を解決するための手段） 本発明に係るフランジ付き筒状部材の製造方法は、熱処
理型アルミニウム合金からなる中空厚肉状素材を機械加
工することによって部分的に厚肉部を残して薄肉部とし
た厚肉部付き筒状素材に形成し、次いで溶体化処理を施
したのち、当該厚肉部付き筒状素材の厚肉部と薄肉部の
それぞれについて前記厚肉部の圧縮歪に対して前記薄肉
部の圧縮歪が80〜120％の範囲となる厚さ方向の冷間圧
縮を行ない、その後時効処理を施し、仕上げ加工するこ
とによって前記厚肉部をフランジとしたフランジ付き筒
状部材を得る構成としたものであり、上記構成を前記課
題を解決するための手段としたことを特徴としている。 以下に、本発明に係るフランジ付き筒状部材の製造方法
を第１図に基き説明する。 本発明におけるフランジ付き筒状部材の製造方法におい
ては、前述のように素材として熱処理型アルミニウム合
金，すなわち、例えばJIS 2014,2017,2024に代表される
2000系、6061に代表される6000系,7N01,7075に代表され
る7000系のものが用いられる。 まず、前記熱処理型アルミニウム合金よりなる鋳造材を
鍛造加工することにより第１図（ａ）に示す中空厚肉状
素材１に形成する。この中空厚肉状素材１の形状は、図
中の破線で示す最終製品であるフランジ付き筒状部材２
のフランジ2aの形状を考慮した厚肉筒状のものとするの
が望ましい。 次に、前記中空厚肉状素材１に対して切削加工等の機械
加工を行うことによって、最終製品であるフランジ付き
筒状部材２のフランジ2aに相当する部分を厚肉部3aとし
て残し、フランジ付き筒状部材２に含まれない余肉部分
を除去して薄肉部3bとすることにより第１図（ｂ）に示
す厚肉部付き筒状素材３を形成する。 続いて、前記厚肉部付き筒状素材３に対して溶体化処理
を施す。この溶体化処理は、例えば、2024−T62材にお
いては490〜500℃で溶体化処理した後水冷する条件、60
61−T62材においては515〜550℃で溶体化処理した後水
冷する条件、7075−T62材においては460〜500℃で溶体
化処理した後水冷する条件で行う。 次に、前記溶体化処理による残留応力を除去するため
に、前記厚肉部付き筒状素材３に対して、第１図（ｃ）
に示すように、その厚さ方向に冷間圧縮を行う、このと
き、冷間圧縮は、前記厚肉部付き筒状素材３の薄肉3bと
肉厚部3aとのそれぞれについて分けて行う。そして、こ
の冷間圧縮においては、前記厚肉部の圧縮歪に対して、
前記薄肉部の圧縮歪が80〜120％の範囲となるようにし
た厚さ方向の冷間圧縮を行う。この場合、薄肉部に加え
られた圧縮歪が厚肉部に加えられた圧縮歪の80％よりも
小さいと、薄肉部の方においてより多くの残留応力が残
ってしまうため、その後の時効処理において薄肉部の残
留応力を取り除くのが困難となるので好ましくなく、ま
た、薄肉部に加えられた圧縮歪が厚肉部に加えられた圧
縮歪の120％よりも大きいと、薄肉部の方においてより
多くの圧縮歪を与えることとなるため、後において薄肉
部での破壊につながるおそれがでてくるので好ましくな
く、このような理由から、圧縮歪の調整が比較的行いや
すい厚肉部の圧縮歪を基準にして、薄肉部の圧縮歪が80
〜120％である冷間圧縮を行うものに限定した。また、
この冷間圧縮において、特に大型鍛造品の場合には、冷
間圧縮する際の周方向の回転ピッチを小さく採ることに
よって、均一で効果の高い残留応力除去が可能である。 次いで、上記で得た冷間圧縮材（４）に対して時効処理
を施し、その後切削等による仕上げ加工を行うことによ
って最終製品であるフランジ2aを備えたフランジ付き筒
状部材２を得る。そして、この場合の時効処理は、例え
ば2024−T62材においては185〜195℃で約９時間、6061
−T62材においては、155〜165℃で18時間、,7075−T62
材においては、115〜125℃で24時間以上の条件で行うこ
とが可能であり、必要に応じて前記温度範囲や前記温度
範囲の前後での２段以上の多段時効を行うことも可能で
ある。 （発明の作用） 本発明においては、溶体化処理前に、中空厚肉状素材を
機械加工して部分的に厚肉部を残すと共に最終製品であ
るフランジ付き筒状部材に含まれない余肉部分をなくし
て薄肉部となし、最終製品形状に近似した厚肉部付き筒
状素材に形成したのち溶体化処理を施すようにしてい
る。したがって溶体化処理時の肉厚が薄くなっているた
め、溶体化処理による熱処理効果が十分でかつ均一なも
のとなる。また、溶体化処理後には薄肉部と厚肉部とに
分けてそしてまた前記薄肉部の圧縮歪と厚肉部の圧縮歪
とが80〜120％の範囲で近似したものとなる冷間圧縮を
行うことによって、溶体化処理により発生する残留応力
の除去効果が薄肉部と厚肉部において十分でかつ均一な
ものとなるため、高強度，高靱性を備えたフランジ付き
の筒状部材となる。 （実施例） 実施例１ 熱処理型アルミニウム合金である7075−T7352材からな
る鋳造材を鍛造加工することにより、底部外径1520mm,
上部外径860mm,高さ650mm,肉厚130mmの円錐筒状の中空
厚肉状素材１を作成した。次いで、フランジ付き筒状部
材２のフランジ2aとなる前記鍛造材１の底部から180mm
までの範囲を厚肉のまま残して、円錐外側面を切削加工
することによって、前記フランジ2aより上の部分を肉厚
100mmにまで減厚として薄肉部3bとなし、残りは厚肉部3
aとして円錐形の厚肉部付き筒状素材３を得た。 次に、前記円錐形の厚肉部付き筒状素材３に対し480℃
に加熱保持した後水冷する溶体化処理を施した。 続いて、前記溶体化処理後の残留応力を除去するため
に、前記円錐厚肉部付き筒状素材３に対し、肉厚100mm
の薄肉部3bと肉厚130mmの厚肉部3aとのそれぞれにおい
て板厚方向の冷間圧縮を行った。 この冷間圧縮に際し、この実施例で用いたアルミニウム
合金（7075）よりなる素材に対し溶体化処理後に冷間圧
縮した場合の応力−歪の関係を実験により調べたとこ
ろ、第２図に示すような応力−歪線図が得られた。 この結果から、応力と歪との間で、 Ｆ＝［24.9＋3.8δ］×Ｓ ただし、F:プレス荷重（kgf） δ：圧縮歪（％） S:プレス断面積（mm2） （定数の単位:kgf/mm2） の関係を得た。 そこで、このような関係式に従って、肉厚130mmの厚肉
部3aと肉厚100mmの薄肉部3bとで同じ圧縮歪（この実施
例では約３％の圧縮歪）が得られるような冷間圧縮を前
記厚肉部3aと薄肉部3bとに対してそれぞれの板厚方向
（第１図（ｃ）に矢印で示す方向）に行った。 次いで、冷間圧縮材（４）に対して108℃で７時間およ
び165℃で７時間の２段時効処理を施した後、仕上げ切
削加工を行うことによって底部開口側フランジ2aを有す
る円錐形のフランジ付き筒状部材を得た。 次いで、このようにして得た円錐フランジ付き筒状部材
２の上部開口側，底部開口側および中央の各高さ位置に
おける、母線方向（Ｌ方向），円周方向（LT方向）およ
び半径方向（ST方向）のそれぞれ0.2％耐力（0.2％P.
S），引張強さ（T.S）および破断伸び（El）を測定した
ところ、第１表の実施例の欄に示す結果であった。 比較例１ 前記実施例と同様に、熱処理型アルミニウム合金7075−
T7352材からなる鋳造材を鍛造加工することにより、底
部外径1520mm,上部外径860mm,高さ650mm,肉厚130mmの円
錐厚肉筒状の鍛造材100を作成した。次いで前記厚肉状
鍛造材100に対して480℃に加熱保持した後水冷する溶体
化処理を施した。 続いて、前記円錐の厚肉筒状素材に対してその板厚方向
に冷間圧縮を行ったあと、108℃で７時間および165℃で
７時間の２段時効処理を施し、その後切削加工すること
によって前記実施例と同一形状のフランジ102aを有する
円錐形のフランジ付き筒状部材102を得た。 そして、このようにして得た円錐フランジ付き筒状部材
102の0.2％耐力（0.2％P.S），引張強さ（T.S）および
破断伸び（El）を前記実施例と同様にして測定したとこ
ろ、同じく第１表の比較例の欄に示す結果であった。 第１表に示した結果より明らかなように、本発明実施例
の場合には、0.2％耐力（P.S）および引張強さ（T.S）
のいずれにおいても、比較例の場合に比べてより優れた
値を示しており、破断伸び（El）についても良好な値を
示していて、溶体化処理の効果が十分に得られているこ
とが認められた。 実施例2,比較例２ 前記実施例１においては、厚肉部3aと薄肉部3bとに対し
て板厚方向の圧縮歪がほぼ同じとなるような冷間圧縮を
行っているが、厚肉部3aに対する圧縮歪をほぼ一定と
し、薄肉部3bに対する圧縮歪を変化させる冷間圧縮を行
って、圧縮歪の違いによる影響を調べたところ、第２表
に示す結果であった。 第２表に示すように、薄肉部3bの圧縮歪が小さすぎると
きには、薄肉部3bの残留応力が大きくなって厚肉部3aに
比較して強度が低いものとなるので、薄肉部3bの圧縮歪
は厚肉部3aの圧縮歪に対して80％以上とするのが良く、
また、薄肉部3bの圧縮歪が大きすぎるときには、薄肉部
3bにおいて曲がりや割れを発生するようになるため、薄
肉部3bの圧縮歪は厚肉部3aの圧縮歪に対して120％以下
となるのが良いことが認められた。(Means for Solving the Problems) A method for manufacturing a tubular member with a flange according to the present invention is a method for machining a hollow thick-walled raw material made of a heat-treatable aluminum alloy to leave a thick-walled portion partially and thin-walled. Formed into a tubular material with a thick portion and then subjected to a solution treatment, for each of the thick portion and the thin portion of the tubular material with a thick portion against the compression strain of the thick portion A tubular member with a flange having the thick portion as a flange by performing cold compression in the thickness direction such that the compression strain of the thin portion is in the range of 80 to 120%, and then subjecting to aging treatment and finishing. The present invention is characterized in that the above configuration is used as means for solving the above-mentioned problems. Below, the manufacturing method of the cylindrical member with a flange which concerns on this invention is demonstrated based on FIG. In the method for manufacturing a tubular member with a flange according to the present invention, as described above, a heat treatment type aluminum alloy is used as a material, that is, represented by JIS 2014, 2017, 2024, for example.
2000 series, 6000 series represented by 6061, and 7000 series represented by 7N01, 7075 are used. First, the heat-cast aluminum alloy is forged to form the hollow thick material 1 shown in FIG. 1 (a). The shape of the hollow thick material 1 is a tubular member 2 with a flange, which is a final product shown by a broken line in the drawing.
It is desirable to use a thick-walled tubular shape in consideration of the shape of the flange 2a. Next, the hollow thick material 1 is subjected to machining such as cutting to leave a portion corresponding to the flange 2a of the flanged tubular member 2 as the final product as a thick portion 3a, The extra thick portion not included in the attached tubular member 2 is removed to form the thin portion 3b, thereby forming the tubular material 3 with the thick portion shown in FIG. 1 (b). Then, the tubular material 3 with the thick portion is subjected to solution treatment. This solution treatment is, for example, in the case of 2024-T62 material, the conditions of solution cooling at 490 to 500 ° C. and then water cooling, 60
The 61-T62 material is subjected to solution treatment at 515 to 550 ° C and then water cooled, and the 7075-T62 material is subjected to solution treatment at 460 to 500 ° C and then water cooled. Next, in order to remove the residual stress due to the solution heat treatment, the thick-walled tubular material 3 is removed as shown in FIG.
As shown in, the cold compression is performed in the thickness direction. At this time, the cold compression is performed separately for each of the thin portion 3b and the thick portion 3a of the tubular material 3 with the thick portion. Then, in this cold compression, with respect to the compression strain of the thick portion,
Cold compression in the thickness direction is performed so that the compression strain of the thin portion is in the range of 80 to 120%. In this case, if the compressive strain applied to the thin-walled portion is less than 80% of the compressive strain applied to the thick-walled portion, more residual stress remains in the thin-walled portion, so in subsequent aging treatment It is not preferable because it becomes difficult to remove the residual stress in the thin portion, and if the compressive strain applied to the thin portion is larger than 120% of the compressive strain applied to the thick portion, it is more Since a large amount of compressive strain will be applied, it may lead to damage in the thin portion later, which is not preferable. For this reason, the compressive strain of the thick portion is relatively easy to adjust. The compression strain of the thin part is 80
Limited to those with cold compression of ~ 120%. Also,
In this cold compression, particularly in the case of a large-sized forged product, uniform and highly effective residual stress removal is possible by adopting a small rotational pitch in the circumferential direction during cold compression. Next, the cold-pressed material (4) obtained above is subjected to an aging treatment, and then finish processing such as cutting is performed to obtain the flanged tubular member 2 having the flange 2a as a final product. And, in this case, the aging treatment is, for example, 2024-T62 material at 185 to 195 ° C. for about 9 hours, 6061
-T62 material, 155 ~ 165 ℃ 18 hours, 7075-T62
In the material, it is possible to perform it at 115 to 125 ° C. for 24 hours or more, and if necessary, it is possible to perform multi-step aging of two or more steps in the temperature range and before and after the temperature range. . (Operation of the Invention) In the present invention, before solution treatment, the hollow thick material is machined to leave a thick portion partially and the surplus thickness not included in the flanged tubular member which is the final product. The portion is removed to form a thin wall portion, and after forming a tubular material with a thick wall portion that approximates the shape of the final product, solution treatment is performed. Therefore, since the wall thickness during the solution treatment is thin, the heat treatment effect by the solution treatment is sufficient and uniform. Further, after the solution treatment, cold compression is performed by dividing into a thin portion and a thick portion, and again, the compression strain of the thin portion and the compression strain of the thick portion are approximate to each other in the range of 80 to 120%. By doing so, the effect of removing the residual stress generated by the solution treatment becomes sufficient and uniform in the thin portion and the thick portion, so that a tubular member with a flange having high strength and high toughness is obtained. (Example) Example 1 A bottom material having an outer diameter of 1520 mm was obtained by forging a cast material made of a heat-treatable aluminum alloy 7075-T7352.
A conical tubular hollow thick material 1 having an upper outer diameter of 860 mm, a height of 650 mm and a wall thickness of 130 mm was prepared. Next, 180 mm from the bottom of the forged material 1 to be the flange 2a of the tubular member with flange 2
By cutting the outer surface of the cone, the area above the flange 2a is left thick
The thickness is reduced to 100 mm and thin wall 3b is left, and the rest is thick wall 3
As a, a conical tubular material 3 with a thick portion was obtained. Next, for the conical thick-walled tubular material 3 at 480 ° C
A solution treatment was performed in which the solution was heated and held at 1, and then cooled with water. Subsequently, in order to remove the residual stress after the solution heat treatment, the thickness of the cylindrical raw material with conical thick portion 3 is 100 mm.
Each of the thin portion 3b and the thick portion 3a having a thickness of 130 mm was subjected to cold compression in the plate thickness direction. At the time of this cold compression, the stress-strain relationship in the case of cold compression after the solution treatment to the material made of the aluminum alloy (7075) used in this example was examined by an experiment and as shown in FIG. A simple stress-strain diagram was obtained. From this result, between stress and strain, F = [24.9 + 3.8δ] × S where F: Press load (kgf) δ: Compressive strain (%) S: Press cross-sectional area (mm 2 ) (constant The unit: kgf / mm 2 ) was obtained. Therefore, according to such a relational expression, cold compression such that the same compressive strain (compressive strain of about 3% in this embodiment) is obtained in the thick portion 3a having a thickness of 130 mm and the thin portion 3b having a thickness of 100 mm. Was performed on the thick portion 3a and the thin portion 3b in the respective plate thickness directions (directions indicated by arrows in FIG. 1 (c)). Then, the cold compression material (4) is subjected to a two-step aging treatment at 108 ° C. for 7 hours and at 165 ° C. for 7 hours, and then subjected to finish cutting to obtain a conical shape having a bottom opening side flange 2a. A tubular member with a flange was obtained. Next, at the height positions of the top opening side, the bottom opening side and the center of the conical flanged tubular member 2 thus obtained, the generatrix direction (L direction), the circumferential direction (LT direction) and the radial direction ( 0.2% proof stress in each direction (ST direction) (0.2% P.
S), tensile strength (TS) and elongation at break (El) were measured, and the results were shown in the column of Example in Table 1. Comparative Example 1 Similar to the above example, the heat treatment type aluminum alloy 7075-
A conical thick tubular forging 100 having a bottom outer diameter of 1520 mm, a top outer diameter of 860 mm, a height of 650 mm, and a wall thickness of 130 mm was prepared by forging a cast material made of T7352 material. Next, the thick-walled forged material 100 was subjected to a solution treatment of heating and holding at 480 ° C. and then water cooling. Subsequently, the conical thick-walled tubular material is subjected to cold compression in the plate thickness direction, and then subjected to a two-step aging treatment at 108 ° C. for 7 hours and at 165 ° C. for 7 hours, followed by cutting. As a result, a conical flanged tubular member 102 having a flange 102a having the same shape as that of the above-mentioned embodiment was obtained. And the tubular member with the conical flange thus obtained
The 0.2% proof stress (0.2% PS), the tensile strength (TS) and the elongation at break (El) of 102 were measured in the same manner as in the above example, and the results are also shown in the comparative example column of Table 1. . As is clear from the results shown in Table 1, in the case of the examples of the present invention, 0.2% proof stress (PS) and tensile strength (TS)
In any of the above, it shows a more excellent value than the case of the comparative example, also shows a good value for the elongation at break (El), that the effect of the solution treatment is sufficiently obtained. Admitted. Example 2, Comparative Example 2 In Example 1, cold compression is performed so that the thick portion 3a and the thin portion 3b have substantially the same compressive strain in the plate thickness direction. Table 2 shows the results shown in Table 2 when the effect of the difference in compressive strain was examined by performing cold compression in which the compressive strain for the portion 3a was kept substantially constant and the compressive strain for the thin portion 3b was changed. As shown in Table 2, when the compression strain of the thin portion 3b is too small, the residual stress of the thin portion 3b becomes large and the strength becomes lower than that of the thick portion 3a. The strain is preferably 80% or more with respect to the compression strain of the thick portion 3a,
Also, when the compression strain of the thin portion 3b is too large, the thin portion
It was confirmed that the compressive strain of the thin portion 3b should be 120% or less with respect to the compressive strain of the thick portion 3a because bending and cracking will occur in 3b.
以上説明してきたように、本発明に係る厚肉部付き筒状
部材の製造方法は、熱処理型アルミニウム合金からなる
中空厚肉状素材を機械加工することによって部分的に厚
肉部を残して薄肉部とした厚肉部付き筒状素材に形成
し、次いで溶体化処理を施したのち、当該厚肉部付き筒
状素材の厚肉部と薄肉部のそれぞれについて前記厚肉部
の圧縮歪に対して前記薄肉部の圧縮歪が80〜120％の範
囲となる厚さ方向の冷間圧縮を行ない、その後時効処理
を施し、仕上げ加工することによって前記厚肉部をフラ
ンジとしたフランジ付き筒状部材を得る構成としたもの
であるから、溶体化処理時の肉厚が薄くなり、溶体化処
理による熱処理効果が十分なものとなると共に、厚肉部
と薄肉部とにおける圧縮歪が近似したものとなっている
ので、溶体化処理による残留応力の除去効果が十分でか
つ均一なものとなり、優れた強度・靱性を備えたフラン
ジ付き筒状部材をえることができるという優れた効果を
奏するものである。As described above, the method for manufacturing a tubular member with a thick wall portion according to the present invention is a thin wall material that partially leaves a thick wall portion by machining a hollow thick wall material made of a heat treatment type aluminum alloy. Formed into a tubular material with a thick portion and then subjected to a solution treatment, for each of the thick portion and the thin portion of the tubular material with a thick portion against the compression strain of the thick portion A tubular member with a flange having the thick portion as a flange by performing cold compression in the thickness direction such that the compression strain of the thin portion is in the range of 80 to 120%, and then subjecting to aging treatment and finishing. Therefore, the wall thickness during solution treatment becomes thin, the heat treatment effect by solution treatment becomes sufficient, and the compressive strain in the thick portion and the thin portion is similar. Therefore, solution treatment Effect of removing residual stress is assumed a and uniform enough, in which an excellent effect that it is possible to obtain a flanged cylindrical member having excellent strength and toughness.
第１図は本発明に係るフランジ付き筒状部材の製造方法
を示す説明図、第２図は溶体化処理後に冷間圧縮を行っ
た場合の応力−歪の関係を実験により調べた結果を示す
応力−歪線図、第３図は従来のフランジ付き筒状部材の
製造方法を示す説明図である。 １……中空厚肉状素材、２……フランジ付き筒状部材、
2a……フランジ、３……厚肉部付き筒状素材、3a……厚
肉部、3b……薄肉部。FIG. 1 is an explanatory view showing a method of manufacturing a tubular member with a flange according to the present invention, and FIG. 2 shows a result of experimentally investigating a stress-strain relationship when cold compression is performed after solution treatment. A stress-strain diagram and FIG. 3 are explanatory views showing a conventional method for manufacturing a tubular member with a flange. 1 ... Hollow thick material, 2 ... Cylindrical member with flange,
2a ...... flange, 3 ... cylindrical material with thick part, 3a ... thick part, 3b ... thin part.
Claims (1)
ランジ付き筒状部材を製造するに際し、熱処理型アルミ
ニウム合金からなる中空厚肉状素材を機械加工すること
によって部分的に厚肉部を残して薄肉部とした厚肉部付
き筒状素材に形成し、次いで溶体化処理を施したのち、
当該厚肉部付き筒状素材の厚肉部と薄肉部のそれぞれに
ついて前記厚肉部の圧縮歪に対して前記薄肉部の圧縮歪
が80〜120％の範囲となる厚さ方向の冷間圧縮を行な
い、その後時効処理を施し、仕上げ加工することによっ
て前記厚肉部をフランジとしたフランジ付き筒状部材を
得ることを特徴とするフランジ付き筒状部材の製造方
法。1. When manufacturing a tubular member with a flange made of a heat-treatable aluminum alloy as a material, a hollow thick-walled material made of a heat-treatable aluminum alloy is machined to leave a thick-walled portion partially and thin-walled. After forming into a tubular material with a thick part as a part, and then subjecting to solution treatment,
Cold compression in the thickness direction such that the compressive strain of the thin portion is in the range of 80 to 120% with respect to the compressive strain of the thick portion for each of the thick portion and the thin portion of the tubular material with the thick portion. The method for producing a flanged tubular member, wherein the flanged tubular member having the thick portion as a flange is obtained by performing aging treatment and finishing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13324489A JPH0733561B2 (en) | 1989-05-26 | 1989-05-26 | Method of manufacturing tubular member with flange |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13324489A JPH0733561B2 (en) | 1989-05-26 | 1989-05-26 | Method of manufacturing tubular member with flange |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH032359A JPH032359A (en) | 1991-01-08 |
| JPH0733561B2 true JPH0733561B2 (en) | 1995-04-12 |
Family
ID=15100078
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13324489A Expired - Lifetime JPH0733561B2 (en) | 1989-05-26 | 1989-05-26 | Method of manufacturing tubular member with flange |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0733561B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103551816A (en) * | 2013-11-18 | 2014-02-05 | 沈阳黎明航空发动机(集团)有限责任公司 | Processing method for controlling processing deformation of titanium-aluminum alloy thin-wall case |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6159315A (en) * | 1994-12-16 | 2000-12-12 | Corus Aluminium Walzprodukte Gmbh | Stress relieving of an age hardenable aluminum alloy product |
| EP0848073B1 (en) * | 1996-12-16 | 2002-05-08 | Corus Aluminium Walzprodukte GmbH | Stress relieving of an age hardenable aluminium alloy product |
| US6406567B1 (en) | 1996-12-16 | 2002-06-18 | Corus Aluminium Walzprodukte Gmbh | Stress relieving of an age hardenable aluminium alloy product |
| CN112846478A (en) * | 2020-12-31 | 2021-05-28 | 湖北三江航天红阳机电有限公司 | Machining method for large thin-wall easily-deformable cabin shell |
| CN114289659A (en) * | 2021-12-31 | 2022-04-08 | 中航卓越锻造（无锡）有限公司 | Manufacturing method of TC4 titanium alloy cone-shaped forging for aeroengine |
-
1989
- 1989-05-26 JP JP13324489A patent/JPH0733561B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103551816A (en) * | 2013-11-18 | 2014-02-05 | 沈阳黎明航空发动机(集团)有限责任公司 | Processing method for controlling processing deformation of titanium-aluminum alloy thin-wall case |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH032359A (en) | 1991-01-08 |
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