JPH09157734A - Method for correcting strain of metal-made annular plate material - Google Patents
Method for correcting strain of metal-made annular plate materialInfo
- Publication number
- JPH09157734A JPH09157734A JP7321564A JP32156495A JPH09157734A JP H09157734 A JPH09157734 A JP H09157734A JP 7321564 A JP7321564 A JP 7321564A JP 32156495 A JP32156495 A JP 32156495A JP H09157734 A JPH09157734 A JP H09157734A
- Authority
- JP
- Japan
- Prior art keywords
- annular plate
- blank
- metal
- metal annular
- strain
- 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
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0006—Details, accessories not peculiar to any of the following furnaces
- C21D9/0025—Supports; Baskets; Containers; Covers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D1/00—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/46—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Crystallography & Structural Chemistry (AREA)
- Thermal Sciences (AREA)
- Physics & Mathematics (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
- Manufacturing Of Magnetic Record Carriers (AREA)
- Straightening Metal Sheet-Like Bodies (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、コンピュータの磁
気ディスク基板等に使用される金属製環状板材、特にア
ルミニウム又はアルミニウム合金製の金属製環状板材の
歪矯正方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for straightening a metal annular plate material used for a magnetic disk substrate of a computer or the like, particularly a metal annular plate material made of aluminum or aluminum alloy.
【０００２】[0002]
【従来の技術】中央に孔の開いた金属製環状板材、例え
ばアルミニウム又はアルミニウム合金製の磁気ディスク
基板に用いるブランク材の成形方法としては、一般的に
圧延された板を環状の円板に打ち抜くことにより得られ
る。この打ち抜いたままのブランク材は凸状又は凹状に
わん曲した形状をしており、磁気ディスク基板に用いる
には平坦度が好ましくない。2. Description of the Related Art As a method for forming a blank material used for a metal annular plate material having a hole in the center thereof, for example, a magnetic disk substrate made of aluminum or aluminum alloy, a rolled plate is generally punched into an annular disk. It is obtained by The blank material as punched has a convex or concave curved shape, and its flatness is not preferable for use in a magnetic disk substrate.
【０００３】そこで、このブランク材の歪矯正方法とし
て、例えば複数枚の加圧矯正すべきブランク材を平坦な
定盤で挟み、これを複数段重ね、上下方向に加圧しなが
ら焼鈍する加圧焼鈍方法が行なわれているが、これに使
用される定盤として凹状若しくは凸状にテーパー加工し
たものを使用する方法がある（特開平５−２６３２０１
号公報）。Therefore, as a method for straightening the strain of the blank material, for example, a plurality of blank materials to be pressure-corrected are sandwiched by flat platens, and the blank materials are stacked in a plurality of stages and annealed while applying pressure in the vertical direction. Although a method has been carried out, there is a method of using a platen that is concavely or convexly tapered as a surface plate used for this (Japanese Patent Application Laid-Open No. 5-263201).
No.).
【０００４】一方、ブランク材を複数枚積み重ねてブラ
ンク材の下に設ける敷定盤とブランク材の上に載せる押
え定盤との間に保持し、敷定盤と押え定盤とに耐熱性ス
プリングを介して圧力を加えながら加熱焼鈍を行なう方
法がある（特開昭６２−２４０１１２号公報）。On the other hand, a plurality of blanks are stacked and held between a sill plate provided under the blank and a press platen placed on the blank, and a heat resistant spring is provided between the stool plate and the press platen. There is a method of performing heat annealing while applying pressure through the (JP-A-62-240112).
【０００５】この他にも、特開昭６１−４４１６２号公
報や特開平６−２８５５５４号公報に開示されているブ
ランク材の歪矯正方法がある。In addition to the above, there is a method for straightening a blank material disclosed in JP-A-61-44162 and JP-A-6-285554.
【０００６】[0006]
【発明が解決しようとする課題】しかしながら、これら
従来のブランク材の歪矯正方法は、図４に示すように、
通常ブランク材１の積み重ね方が、凸面２と凹面３が当
接するように積み重ねられ、加圧焼鈍して矯正されるも
のである。However, as shown in FIG. 4, these conventional methods for correcting the distortion of a blank material are as follows.
Normally, the blank materials 1 are stacked so that the convex surface 2 and the concave surface 3 come into contact with each other, and are annealed under pressure to be straightened.
【０００７】複数枚のブランク材１を凸面２と凹面３が
当接するように重ねる積層は、ブランク材１同士の接触
面積が大きくなり、見かけ上のブランク材１の板厚が重
ねられた板の積層厚さと見なされることにより歪矯正に
要する加圧力が非常に大きくなる。更に、歪矯正後にお
けるブランク材の平坦度が不十分になる恐れがあった。In stacking a plurality of blank materials 1 so that the convex surface 2 and the concave surface 3 are in contact with each other, the contact area between the blank materials 1 is large and the apparent blank material 1 has a stacked thickness. Since it is regarded as a laminated thickness, the pressing force required for strain correction becomes extremely large. Furthermore, the flatness of the blank material after strain correction may be insufficient.
【０００８】本発明の目的は、上記課題を解決すべくな
されたもので、金属製環状板材の歪矯正の加圧力が小さ
く歪矯正が容易な、しかも平坦度が優れた金属製環状板
材の歪矯正方法を提供することである。The object of the present invention is to solve the above-mentioned problems, and a strain of a metal annular plate material having a small flatness and an easy flatness correction with a small pressing force for the strain correction of the metal annular plate material. It is to provide a correction method.
【０００９】[0009]
【課題を解決するための手段】上記目的を達成するた
め、本発明は、表面が平坦な定盤の間に複数枚の金属製
環状板材を重ね合わせて挟み、前記定盤を介して該複数
枚の金属製環状板材を加圧しながら焼鈍する金属製環状
板材の歪矯正方法において、前記金属製環状板材の凸面
と凸面、凹面と凹面を当接して積層し、加圧焼鈍するこ
とである。金属製環状板材の凸面と凸面、凹面と凹面を
当接して積層し、加圧焼鈍することにより、金属製環状
板材の歪矯正の加圧力が小さくなり、歪矯正が容易で、
しかも平坦度が優れると共に、歪矯正に使用する治具等
の損傷が少なく寿命も長い。In order to achieve the above object, the present invention provides a method in which a plurality of metallic annular plate members are superposed and sandwiched between surface plates having a flat surface, and the plurality of metal annular plate materials are sandwiched via the surface plates. In the strain correcting method for a metal annular plate material in which a sheet of metal annular plate material is annealed while being pressed, the convex surface and the convex surface, and the concave surface and the concave surface of the metal annular plate material are contacted and laminated, and pressure annealing is performed. The convex surface and the convex surface of the metal annular plate material, the concave surface and the concave surface are contacted and laminated, and by pressure annealing, the pressing force for strain correction of the metal annular plate material is reduced, and the strain correction is easy,
Moreover, the flatness is excellent, and the jig used for straightening is less damaged and has a long life.
【００１０】又、本発明は、表面が平坦な定盤の間に複
数枚の金属製環状板材を重ね合わせて挟み、前記定盤を
介して該複数枚の金属製環状板材を加圧しながら焼鈍す
る金属製環状板材の歪矯正方法において、複数枚の金属
製環状板材の凸面と凹面が当接するように積み重ねたも
のをユニットとして、該ユニットの凸面と凸面、凹面と
凹面を当接して積層し、加圧焼鈍することである。ユニ
ットの凸面と凸面、凹面と凹面を当接して積層し、加圧
焼鈍することにより、加圧力を余り大きくしないで多数
の金属製環状板材の歪矯正処理を平坦度良く効率的に行
なうことが出来る。Further, according to the present invention, a plurality of metallic annular plate materials are superposed and sandwiched between surface plates having a flat surface, and annealed while pressurizing the plurality of metallic annular plate materials through the surface plate. In the strain correction method for a metal annular plate material, a unit is formed by stacking a plurality of metal annular plate materials so that the convex surface and the concave surface contact each other, and the convex surface and the convex surface of the unit are contacted and the concave surface and the concave surface are contacted to be laminated. , Pressure annealing. By stacking the convex and convex surfaces of the unit, and the concave and concave surfaces in contact with each other, and press-annealing, it is possible to efficiently perform strain correction processing on a large number of metal annular plate materials without flattening the pressing force. I can.
【００１１】更に、上記いずれかの金属製環状板材の歪
矯正方法において、前記加圧は、耐熱性弾性材の弾性力
を利用することである。加圧が耐熱性弾性材の弾性力を
利用することにより、焼鈍炉内での焼鈍処理により、金
属製環状板材と締付治具の温度による伸び、縮みの差を
吸収して、焼鈍処理の間、常に一定の加圧力を加えるこ
とが出来、安定した歪矯正が出来る。Further, in any one of the above-described strain correcting methods for a metal annular plate material, the pressing is to utilize the elastic force of the heat resistant elastic material. By utilizing the elastic force of the heat-resistant elastic material for pressurization, the annealing process in the annealing furnace absorbs the difference in elongation and contraction due to the temperature of the metal annular plate material and the tightening jig, and the annealing process During that time, a constant pressure can be applied at all times and stable strain correction can be performed.
【００１２】[0012]
【発明の実施の形態】以下、本発明の実施の形態を図面
に基づいて詳細に説明する。本実施の形態における金属
製環状板材は、コンピュータの磁気ディスク基板等に使
用されるアルミニウム又はアルミニウム合金製のブラン
ク材である。ブランク材の板厚としては、磁気ディスク
基板の材質や直径にもよるが、０．４〜２．５ｍｍ程度
である。Embodiments of the present invention will be described below in detail with reference to the drawings. The metal annular plate material in the present embodiment is a blank material made of aluminum or aluminum alloy used for a magnetic disk substrate of a computer or the like. The plate thickness of the blank material is about 0.4 to 2.5 mm, though it depends on the material and diameter of the magnetic disk substrate.
【００１３】本実施の形態における金属製環状板材の歪
矯正方法は、表面が平坦な定盤の間に複数枚のブランク
材１を重ね合わせて挟み、定盤を介してこの複数枚のブ
ランク材を加圧しながら焼鈍することである。この際、
図１に示すように、ブランク材１の凸面２と凸面２、凹
面３と凹面３を当接して積層する。図１においては、１
枚づつ交互に裏、表、裏、表の順に積層することを示し
ている。In the method for straightening a metal annular plate material in the present embodiment, a plurality of blank materials 1 are superposed and sandwiched between surface plates having a flat surface, and the blank materials are inserted through the surface plates. Is to anneal while applying pressure. On this occasion,
As shown in FIG. 1, the convex surface 2 and the convex surface 2 and the concave surface 3 and the concave surface 3 of the blank material 1 are brought into contact with each other and laminated. In FIG. 1, 1
It is shown that the sheets are laminated alternately in the order of the back, the front, the back, and the front.
【００１４】図２は、図１の積層状態を採用した加圧焼
鈍工程の説明図である。図１のように積層した複数枚の
ものを一つのブロック４ａとして表面１０ａが平坦な下
部定盤１０の上に載置し、更にこのブロック４ａ上に両
表面が平坦な中間定盤９ａ（スペーサ）を載せ、更に中
間定盤９ａの上にブロック４ｂを載置する。このように
ブロックと中間定盤を交互に積み重ね、最後のブロック
４ｅの上に表面８ａが平坦な上部定盤８を載せる。そし
て、下部定盤１０に固定されたねじ棒１２と、ねじ棒１
２に螺合したナット１３によって耐熱性弾性材であるス
プリング１１を介してブランク材１の面に対して所定の
加圧力、例えば約０．５ｋｇｆ／ｃｍ2以上の圧力を加
える。このようにして、形成されたものを、焼鈍炉に入
れ、所定の温度と時間、例えば３００℃以上、好ましく
は３５０〜３６０℃で十分な時間、例えば５〜６時間保
持して加圧焼鈍する。FIG. 2 is an explanatory view of a pressure annealing process which adopts the laminated state of FIG. A plurality of laminated plates as shown in FIG. 1 are placed as a block 4a on a lower surface plate 10 having a flat surface 10a, and an intermediate surface plate 9a (spacer having flat surfaces) on the block 4a. ) Is placed, and the block 4b is placed on the intermediate surface plate 9a. In this way, the blocks and the intermediate surface plate are alternately stacked, and the upper surface plate 8 having a flat surface 8a is placed on the last block 4e. Then, the screw rod 12 fixed to the lower surface plate 10 and the screw rod 1
A nut 13, which is screwed into 2, applies a predetermined pressing force, for example, a pressure of about 0.5 kgf / cm 2 or more, to the surface of the blank 1 via the spring 11 which is a heat resistant elastic material. The thus formed material is placed in an annealing furnace, and pressure-annealed by holding it at a predetermined temperature and time, for example, 300 ° C. or higher, preferably 350 to 360 ° C. for a sufficient time, for example, 5 to 6 hours. .
【００１５】上記実施の形態において、ブロックのブラ
ンク材枚数及び加圧力は、ブランク材の材質、板厚或い
は直径等によって適宜選定する。更に、ブロックの数は
５個の場合を説明したが、本発明は、これに限定され
ず、ブランク材の枚数及び加圧力と同様に、ブランク材
の材質、板厚或いは直径等によって適宜選定する。更
に、定盤は、アルミニウム合金製又はステンレス製で少
なくとも歪矯正後のブランク材の平坦度以上の表面平坦
度のものを使用する。又、スプリング１１は、焼鈍保持
温度、例えば３５０〜３６０℃において弾性を維持し耐
熱性のあるものを使用し、材質としては合金工具鋼、耐
熱ばね鋼等を使用する。形状は螺旋巻状に限らず板状そ
の他の形状のものであっても良い。In the above-mentioned embodiment, the number of blank materials and the pressing force of the block are appropriately selected depending on the material, plate thickness or diameter of the blank material. Furthermore, although the case where the number of blocks is 5 has been described, the present invention is not limited to this, and may be appropriately selected depending on the material, plate thickness, diameter, etc. of the blank material as well as the number of blank materials and the pressing force. . Further, the surface plate is made of aluminum alloy or stainless steel and has a surface flatness which is at least equal to or higher than the flatness of the blank material after straightening. The spring 11 is made of alloy tool steel, heat resistant spring steel, etc., which is elastic and maintains heat resistance at an annealing holding temperature of 350 to 360 ° C., for example. The shape is not limited to the spiral winding shape, and may be a plate shape or another shape.
【００１６】以上の構成を有する本実施の形態のブラン
ク材の歪矯正方法は、次のように作用する。即ち、ブラ
ンク材１の凸面２と凸面２、凹面３と凹面３を当接して
積層し、加圧焼鈍することにより、ブランク材１の歪矯
正の加圧力が小さくなり、歪矯正が容易で、しかも平坦
度が優れると共に、歪矯正に使用する治具等の損傷が少
なく寿命が長い。The method of straightening the blank material according to the present embodiment having the above-described structure operates as follows. That is, the convex surface 2 and the convex surface 2, and the concave surface 3 and the concave surface 3 of the blank material 1 are brought into contact with each other and laminated, and the pressure annealing for the strain correction of the blank material 1 becomes small, and the strain correction is easy, Moreover, the flatness is excellent, and the jig used for straightening is less damaged and has a long life.
【００１７】更に、加圧が耐熱性スプリング１１の弾性
力を利用することにより、焼鈍炉内での焼鈍処理によ
り、ブランク材１と締付治具の温度による伸び、縮みの
差を吸収して、焼鈍処理の間、常に一定の加圧力を加え
ることが出来、安定した歪矯正が出来る。Further, by utilizing the elastic force of the heat-resistant spring 11 for pressurization, the difference in elongation and contraction due to the temperature of the blank 1 and the tightening jig is absorbed by the annealing treatment in the annealing furnace. During the annealing process, a constant pressure can be applied at all times, and stable strain correction can be performed.
【００１８】図３は、図１と同様の金属製環状板材の積
層状態の他の実施の形態を示す説明図である。この金属
製環状板材の積層状態を採用した金属製環状板材の歪矯
正方法は、先の歪矯正方法と同様に、表面が平坦な定盤
の間に、複数枚の金属製環状板材であるブランク材１を
重ね合わせて挟み、定盤を介してこの複数枚のブランク
材を加圧しながら焼鈍することであるが、複数枚、例え
ば５枚のブランク材１の凸面２と凹面３が当接するよう
に積み重ねたものをユニットとして、このユニット５ａ
の凹面７とユニット５ｂの凹面７、ユニット５ｂの凸面
６とユニット５ｃの凸面６を当接して積層し、以下この
要領で積層し加圧焼鈍することである。即ち、いくつか
の枚数のブランク材１を同じ歪の向きに重ね合わせて１
ユニットとし、ユニット同士を互いに凸面６と凸面６、
凹面７と凹面７を当接して積層し、加圧焼鈍するのであ
る。FIG. 3 is an explanatory view showing another embodiment of a laminated state of the metallic annular plate members similar to FIG. The strain correcting method of the metal annular plate material that adopts the laminated state of the metal annular plate material is similar to the above-described strain correcting method, and the surface is a flat platen between the flat plates, which are a plurality of metal annular plate materials. The material 1 is overlapped and sandwiched, and the plurality of blank materials are annealed while being pressed through a surface plate, but the convex surfaces 2 and the concave surfaces 3 of the plurality of, for example, five blank materials 1 contact each other. This unit 5a
The concave surface 7 and the concave surface 7 of the unit 5b, and the convex surface 6 of the unit 5b and the convex surface 6 of the unit 5c are brought into contact with each other to be laminated, and thereafter, they are laminated in this manner and pressure-annealed. That is, several blanks 1 are piled up in the same strain direction to form 1
A unit, and the units 6 and 6 have convex surfaces 6 and 6,
The concave surface 7 and the concave surface 7 are brought into contact with each other, laminated, and pressure-annealed.
【００１９】ユニットの凸面と凸面、凹面と凹面を当接
して積層し、加圧焼鈍することにより、図１に示す１枚
づつ凸面と凸面、凹面と凹面を当接する場合よりは加圧
力は大きくなるが、図４に示す凸面と凹面が当接するよ
うに積み重ねる従来法よりは小さい加圧力で多数のブラ
ンク材の歪矯正処理を効率良く行なえ平坦度も良好にす
ることが出来る。By laminating the convex and convex surfaces of the unit and the concave and concave surfaces in contact with each other and pressurizing and annealing, the pressing force is larger than in the case where the convex and convex surfaces and the concave and concave surfaces are contacted one by one as shown in FIG. However, it is possible to efficiently perform the strain correction processing on a large number of blank materials with a smaller pressing force than the conventional method of stacking so that the convex surface and the concave surface shown in FIG.
【００２０】[0020]
【実施例】次に、本発明に係る金属製環状板材の歪矯正
方法の実施例及び比較例について説明する。EXAMPLES Next, examples and comparative examples of the method for straightening a metal annular plate material according to the present invention will be described.
【００２１】Ｍｇ４．５ｗｔ％、Ｃｕ０．０６ｗｔ％、
残部Ａｌと不可避不純物からなる外径９５ｍｍ、内径２
５ｍｍ、厚さ０．８ｍｍブランク材１を図１に示す如く
１枚づつブランク材の凸面と凸面、凹面と凹面が接する
ように３０枚のブランク材を積層して１ブロックとし、
五つのブロックを図２に示したように、下部定盤、中間
定盤（スペーサー）及び上部定盤の間に５段重ね状態に
挟み込んだ。従って、ブランク材の枚数は合計１５０枚
である。この時のスペーサは、直径１１０ｍｍ×厚さ２
０ｍｍで材質はＳ５５Ｃを使用した。そして、ナットを
締め込み、上下方向の加圧を行なった。積層したブラン
ク材の隙間が無くなった時の締付トルクをトルクレンチ
で測定し、締付圧力を測定した。その結果、締付圧力は
２００ｋｇｆ／ｃｍ2であった。更に、締付圧力を１０
０ｋｇｆ／ｃｍ2追加したところブランク材に対する面
圧は２ｋｇｆ／ｃｍ2であった。このようにしてセット
したブランク材を３セット用意し、焼鈍保持温度３５０
℃、保持時間５Ｈｒの焼鈍処理を行なった。4.5 wt% Mg, 0.06 wt% Cu,
95mm outer diameter consisting of balance Al and unavoidable impurities, inner diameter 2
As shown in FIG. 1, a blank material 5 having a thickness of 5 mm and a thickness of 0.8 mm is laminated one by one such that 30 blank materials are laminated so that the convex surface and the convex surface and the concave surface and the concave surface of the blank material are in contact with each other to form one block.
As shown in FIG. 2, the five blocks were sandwiched between a lower surface plate, an intermediate surface plate (spacer), and an upper surface plate in a five-stage stacked state. Therefore, the total number of blanks is 150. At this time, the spacer has a diameter of 110 mm and a thickness of 2
The material was S55C at 0 mm. Then, the nut was tightened and pressure was applied in the vertical direction. The tightening torque when the gap between the laminated blanks was eliminated was measured with a torque wrench to measure the tightening pressure. As a result, the tightening pressure was 200 kgf / cm 2 . Furthermore, tightening pressure is 10
When 0 kgf / cm 2 was added, the surface pressure on the blank was 2 kgf / cm 2 . Three sets of blanks set in this way are prepared and the annealing holding temperature is set to 350.
Annealing treatment was performed at a temperature of 5 hours for 5 hours.
【００２２】歪矯正を行なったブランク材４２０枚（各
定盤に接する１枚目のブランク材を除く）の平坦度を、
公知の光学式の干渉縞を利用した光学式干渉縞測定器を
使用して縞の数を数えて測定した。ブランク上の縞模様
が同芯円形状のものが理想的で１本の縞が１μｍに相当
する。焼鈍前のブランク材は、上記測定器ではレンジオ
ーバーで測定不可能であった。その結果、平均値ｘ＝
４．８μｍ、標準偏差σ＝０．５４μｍであった。The flatness of the 420 strain-corrected blanks (excluding the first blank in contact with each surface plate) is
The number of fringes was counted and measured using an optical interference fringe measuring device utilizing a known optical interference fringe. Ideally, the striped pattern on the blank has a concentric circle shape, and one striped pattern corresponds to 1 μm. The blank material before annealing could not be measured by the above measuring instrument due to overrange. As a result, the average value x =
It was 4.8 μm and the standard deviation σ = 0.54 μm.
【００２３】比較例として、実施例で使用したブランク
材と同じ工程で得られたブランク材の凸面と凹面が接す
るように３０枚のブランク材を積み重ね、これを上記実
施例と同様の定盤で挟み込んだ。これを５段重ね状態に
した。この時のブランク材の合計枚数は１５０枚で３セ
ット用意した。更に、締付ナットを締め込み、上下方向
の加圧を行なった。積み重ねたブランク材の隙間が無く
なった時の加圧力をトルクレンチで測定した。その結
果、加圧力は８００ｋｇｆ／ｃｍ2であった。更に、加
圧力を１００ｋｇｆ／ｃｍ2追加したところブランク材
に対する面圧は６ｋｇｆ／ｃｍ2であった。この３セッ
トに焼鈍保持温度３５０℃、保持時間５Ｈｒの焼鈍処理
を行なった。As a comparative example, 30 blanks were stacked so that the convex surface and the concave surface of the blank material obtained in the same process as the blank material used in the embodiment were in contact with each other, and these were stacked on the same surface plate as in the above-mentioned embodiment. I caught it. This was put in a 5-stage stacked state. The total number of blank materials at this time was 150, and three sets were prepared. Further, the tightening nut was tightened, and vertical pressure was applied. The pressure applied when the gaps in the stacked blanks were eliminated was measured with a torque wrench. As a result, the applied pressure was 800 kgf / cm 2 . Furthermore, the surface pressure against the pressure 100 kgf / cm 2 added at blank was 6 kgf / cm 2. The three sets were annealed at an annealing holding temperature of 350 ° C. and a holding time of 5 hours.
【００２４】上記実施例と同様の平坦度測定器により実
施例と同様に各定盤に接する１枚目のブランク材を除い
た４２０枚のブランク材の平坦度を測定した結果、平均
値ｘ＝７．２μｍ、標準偏差σ＝０．７３μｍであっ
た。The flatness of 420 blanks excluding the first blank which is in contact with each surface plate was measured by the same flatness measuring device as in the above example, and the average value x = The value was 7.2 μm, and the standard deviation σ = 0.73 μm.
【００２５】上記平坦度の結果から、実施例のブランク
材は、比較例のブランク材の平坦度よりも大巾に改善さ
れバラツキも小さくなった。更に、ブランク材を加圧矯
正するための加圧力が、比較例に比べ三分の一になっ
た。From the results of the flatness, the blanks of the examples were greatly improved and the variations were smaller than the flatness of the blanks of the comparative example. Further, the pressure applied to press-correct the blank material was one-third that of the comparative example.
【００２６】以上この発明を図示の実施例について詳し
く説明したが、それを以ってこの発明をそれらの実施例
のみに限定するものではなく、この発明の精神を逸脱せ
ずして種々改変を加えて多種多様の変形をなし得ること
は云うまでもない。Although the present invention has been described in detail with reference to the embodiments shown in the drawings, the present invention is not limited to these embodiments by using the embodiments, and various modifications can be made without departing from the spirit of the present invention. In addition, it goes without saying that various modifications can be made.
【００２７】[0027]
【発明の効果】本発明の金属製環状板材の歪矯正方法に
よれば、歪矯正の加圧力が小さく矯正が容易な、しかも
平坦度に優れた金属製環状板材を得ることが出来る。According to the strain correcting method for a metal annular plate material of the present invention, it is possible to obtain a metal annular plate material which has a small pressing force for strain correction, is easy to correct, and has excellent flatness.
【図１】本発明に係る金属製環状板材の歪矯正方法にお
いて採用する金属製環状板材の積層状態の一実施の形態
を示す説明図である。FIG. 1 is an explanatory diagram showing an embodiment of a laminated state of metal annular plate members used in a method for correcting distortion of a metal annular plate member according to the present invention.
【図２】図１の積層状態を採用した加圧焼鈍工程の説明
図である。FIG. 2 is an explanatory diagram of a pressure annealing process that employs the laminated state of FIG.
【図３】図１と同様の金属製環状板材の積層状態の他の
実施の形態を示す説明図である。FIG. 3 is an explanatory diagram showing another embodiment of a laminated state of metal annular plate members similar to FIG.
【図４】従来技術に係る金属製環状板材の積層状態を示
す説明図である。FIG. 4 is an explanatory view showing a laminated state of metal annular plate members according to a conventional technique.
１ ブランク材（金属製環状板材） ２ 凸面 ３ 凹面 ５ａ〜５ｆ ユニット ６ 凸面 ７ 凹面 ８ 上部定盤（定盤） ９ 中間定盤（定盤） １０ 下部定盤（定盤） １１ スプリング（耐熱性弾性材） 1 blank material (metal annular plate material) 2 convex surface 3 concave surface 5a to 5f unit 6 convex surface 7 concave surface 8 upper surface plate (surface plate) 9 intermediate surface plate (surface plate) 10 lower surface plate (surface plate) 11 spring (heat resistance) Elastic material)
Claims (3)
環状板材を重ね合わせて挟み、前記定盤を介して該複数
枚の金属製環状板材を加圧しながら焼鈍する金属製環状
板材の歪矯正方法において、前記金属製環状板材の凸面
と凸面、凹面と凹面を当接して積層し、加圧焼鈍するこ
とを特徴とする金属製環状板材の歪矯正方法。1. A metal ring which is formed by sandwiching and sandwiching a plurality of metal annular plate members between surface plates having a flat surface and pressurizing the plurality of metal annular plate members through the platen while annealing. In the method for straightening a plate material, the method for straightening a metal plate material is characterized in that the convex surface and the convex surface, the concave surface and the concave surface of the metallic annular plate material are laminated in contact with each other, and pressure annealing is performed.
環状板材を重ね合わせて挟み、前記定盤を介して該複数
枚の金属製環状板材を加圧しながら焼鈍する金属製環状
板材の歪矯正方法において、複数枚の金属製環状板材の
凸面と凹面が当接するように積み重ねたものをユニット
として、該ユニットの凸面と凸面、凹面と凹面を当接し
て積層し、加圧焼鈍することを特徴とする金属製環状板
材の歪矯正方法。2. A metal ring which is formed by sandwiching and sandwiching a plurality of metal annular plate members between surface plates having a flat surface and pressurizing the plurality of metal ring plate members through the surface plate while annealing. In the plate straightening method, a plurality of metal annular plate members are stacked so that the convex surface and the concave surface are in contact with each other as a unit, and the convex surface and the convex surface of the unit are in contact with each other and the concave surface and the concave surface are in contact with each other, and pressure annealing is performed. A method for straightening a metal annular plate material, comprising:
耐熱性弾性材の弾性力を利用することを特徴とする金属
製環状板材の歪矯正方法。3. The pressurization according to claim 1 or 2,
A method for straightening a metal annular plate material, which utilizes the elastic force of a heat-resistant elastic material.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7321564A JPH09157734A (en) | 1995-12-11 | 1995-12-11 | Method for correcting strain of metal-made annular plate material |
| CA002206108A CA2206108A1 (en) | 1995-12-11 | 1997-05-26 | Method of straightening annular metallic sheets |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7321564A JPH09157734A (en) | 1995-12-11 | 1995-12-11 | Method for correcting strain of metal-made annular plate material |
| CA002206108A CA2206108A1 (en) | 1995-12-11 | 1997-05-26 | Method of straightening annular metallic sheets |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH09157734A true JPH09157734A (en) | 1997-06-17 |
Family
ID=25679372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7321564A Pending JPH09157734A (en) | 1995-12-11 | 1995-12-11 | Method for correcting strain of metal-made annular plate material |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPH09157734A (en) |
| CA (1) | CA2206108A1 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102373325A (en) * | 2010-08-17 | 2012-03-14 | 刘丽辉 | Method and device for carrying out uniform heating or differential heating on sheet steel in rapid non-deformation non-oxidation mode |
| JP2012123884A (en) * | 2010-12-10 | 2012-06-28 | Furukawa Electric Co Ltd:The | Method of manufacturing blank material for magnetic disk, and blank material for magnetic disk |
| CN103418639A (en) * | 2012-05-22 | 2013-12-04 | 苏州工业园区振中汽车配件有限公司 | Prepressing device for improving flatness of flat sheets and prepressing method utilizing prepressing device |
| CN103418640A (en) * | 2012-05-22 | 2013-12-04 | 苏州工业园区振中汽车配件有限公司 | Shaping equipment for improving flatness of flat sheets and shaping method utilizing shaping equipment |
| JP2013252530A (en) * | 2012-06-06 | 2013-12-19 | Sumitomo Metal Mining Co Ltd | Bend straightening method of electric cobalt plate |
| CN111774437A (en) * | 2020-07-28 | 2020-10-16 | 宁波江丰电子材料股份有限公司 | Pressurizing and shaping method for target material after welding |
-
1995
- 1995-12-11 JP JP7321564A patent/JPH09157734A/en active Pending
-
1997
- 1997-05-26 CA CA002206108A patent/CA2206108A1/en not_active Abandoned
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102373325A (en) * | 2010-08-17 | 2012-03-14 | 刘丽辉 | Method and device for carrying out uniform heating or differential heating on sheet steel in rapid non-deformation non-oxidation mode |
| JP2012123884A (en) * | 2010-12-10 | 2012-06-28 | Furukawa Electric Co Ltd:The | Method of manufacturing blank material for magnetic disk, and blank material for magnetic disk |
| CN103418639A (en) * | 2012-05-22 | 2013-12-04 | 苏州工业园区振中汽车配件有限公司 | Prepressing device for improving flatness of flat sheets and prepressing method utilizing prepressing device |
| CN103418640A (en) * | 2012-05-22 | 2013-12-04 | 苏州工业园区振中汽车配件有限公司 | Shaping equipment for improving flatness of flat sheets and shaping method utilizing shaping equipment |
| JP2013252530A (en) * | 2012-06-06 | 2013-12-19 | Sumitomo Metal Mining Co Ltd | Bend straightening method of electric cobalt plate |
| CN111774437A (en) * | 2020-07-28 | 2020-10-16 | 宁波江丰电子材料股份有限公司 | Pressurizing and shaping method for target material after welding |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2206108A1 (en) | 1998-11-26 |
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