JPH0357526A - Method for pressing titanium series stock - Google Patents
Method for pressing titanium series stockInfo
- Publication number
- JPH0357526A JPH0357526A JP19366089A JP19366089A JPH0357526A JP H0357526 A JPH0357526 A JP H0357526A JP 19366089 A JP19366089 A JP 19366089A JP 19366089 A JP19366089 A JP 19366089A JP H0357526 A JPH0357526 A JP H0357526A
- Authority
- JP
- Japan
- Prior art keywords
- titanium
- oxide film
- pressing
- stock
- titanium series
- 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
- 238000003825 pressing Methods 0.000 title claims abstract description 10
- 238000000034 method Methods 0.000 title claims description 14
- 150000003608 titanium Chemical class 0.000 title abstract 2
- 239000000463 material Substances 0.000 claims abstract description 38
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 31
- 239000010936 titanium Substances 0.000 claims abstract description 30
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 30
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 7
- 239000000956 alloy Substances 0.000 claims abstract description 7
- 230000001590 oxidative effect Effects 0.000 claims description 6
- 238000007743 anodising Methods 0.000 claims description 2
- 239000000314 lubricant Substances 0.000 abstract description 2
- 230000003647 oxidation Effects 0.000 description 8
- 238000007254 oxidation reaction Methods 0.000 description 8
- 239000006082 mold release agent Substances 0.000 description 4
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000007518 final polishing process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 238000010301 surface-oxidation reaction Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000005491 wire drawing Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野］
本発明は、チタンおよびチタン基合金のようなチタン系
の素材を効率よくプレス加工するための方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a method for efficiently pressing titanium-based materials such as titanium and titanium-based alloys.
〔従来の技術］
例えばチタン系素材を用いてメガネのフレーム線材を加
工形戒する場合には、予め直径２〜５ｍｍにスエージン
グ加工したセンターレス丸棒を所定の型材を介してプレ
ス加工する方法が採られる。[Prior Art] For example, when forming a frame wire for eyeglasses using a titanium-based material, a method is used in which a centerless round bar that has been previously swaged to a diameter of 2 to 5 mm is pressed through a predetermined shape material. is taken.
ところが、チタン系素材は型材との滑りが良くないため
高圧をかけた場合に型材へのめり込み、かじり付き等の
現象が発生ずる。このような現象が起きるとプレス加工
品の型離れが悪くなって表面の肌荒れを招き、最終的に
研磨加工を施さない限り表面肌の良好な精密加工ができ
ない。また、素材のめり込み、かしり付き等の現象は型
材の材質を劣化させ、そのライフを著しく減退させる問
題点もある。However, since titanium-based materials do not slide well with the mold material, phenomena such as sinking into the mold material or galling occur when high pressure is applied. When such a phenomenon occurs, the press-formed product does not easily release from the mold, leading to surface roughness, and precision processing with good surface texture cannot be performed unless a final polishing process is performed. Further, there is also the problem that phenomena such as sinking of the material and caulking deteriorate the quality of the material of the mold material, significantly reducing its life.
かかる問題を未然に防止するためには離型剤を使用する
必要があるが、チタン系素材のプレス加工に適した離型
剤が見当らないのが現状であった。In order to prevent such problems, it is necessary to use a mold release agent, but at present no mold release agent suitable for press working of titanium-based materials has been found.
本発明は、予めチタン系素材の表面に酸化被膜を形威す
ることによってプレス加工時における型材へのめり込み
、かしり付き等の現象を離型剤等を用いることなく解消
し、よって長期に亘って常に良好な精度と美麗な表面肌
を得ることができるチタン系素材のプレス加工方法を提
供するものである。The present invention eliminates phenomena such as sinking into the mold material and caulking during press processing without using a mold release agent by forming an oxide film on the surface of the titanium material in advance, and thus it can be used for a long period of time. The purpose of the present invention is to provide a method for pressing titanium-based materials that can always obtain good precision and beautiful surface texture.
チタン系素材面に酸化被膜を形威して加工することは、
線引き加工、圧延加工などの分野ですでに提案（特開昭
６２１１４２０号公報）されているが、プレス加工でお
こなわれた例はない。本発明は、チタン系素材の表面酸
化による高硬度化がプレス加工において加工性の向上に
有効作用する点に着目して開発に至ったものである。Processing by forming an oxide film on the surface of titanium-based materials is
This method has already been proposed in the fields of wire drawing, rolling, etc. (Japanese Patent Application Laid-open No. 6211420), but there is no example of it being performed in press processing. The present invention was developed based on the fact that increasing the hardness of a titanium-based material by surface oxidation effectively improves workability in press working.
すなわち、本発明によるチタン系素材のプレス加工方法
は、チタンおよびチタン基合金からなる素材を酸化処理
して表面に酸化被膜を形威し、ついで型材を介してプレ
ス加工を施すことを構或上の特徴とする。That is, the press working method for a titanium-based material according to the present invention involves oxidizing a material made of titanium and a titanium-based alloy to form an oxide film on the surface, and then performing press working through a mold material. The characteristics of
本発明において、チタンおよびチタン基合金からなる素
材を酸化処理する方法には、大気中で加熱する方法、陽
極酸化する方法、酸化性溶液で処理する方法など常用の
金属酸化手段を用いることができる。しかし、大気中で
加熱酸化する方法では６００℃以上の高温度で長時間お
こなう関係で形威される酸化膜が厚くなり、素材自体の
脆弱するうえに加工後の除去が困難となる。また、酸化
性溶液での酸化は処理が煩雑で、均一な被膜形威が得難
い難点がある。この点、陽極酸化法は均一で所望の厚さ
の酸化被膜を精度よく形或することができる。したがっ
て、本発明の目的には陽極酸化法を適用することが望ま
しい。In the present invention, as a method for oxidizing materials made of titanium and titanium-based alloys, conventional metal oxidation methods such as heating in the atmosphere, anodizing, and treatment with an oxidizing solution can be used. . However, in the method of heating and oxidizing in the atmosphere, the oxide film formed becomes thick because the process is carried out at high temperatures of 600° C. or higher for a long time, which not only weakens the material itself but also makes it difficult to remove it after processing. Furthermore, oxidation using an oxidizing solution is complicated and has the disadvantage that it is difficult to obtain a uniform film shape. In this respect, the anodic oxidation method can form a uniform oxide film of a desired thickness with high accuracy. Therefore, it is desirable to apply the anodic oxidation method for the purpose of the present invention.
形威する酸化被膜の厚さは０．１〜ｌμｍ、より好まし
くは０． ３〜０．５μｍに設定することが適切であ
る。０．１μｍ未満の膜厚では素材の地肌に入り込んで
しまって実質的な効果が減殺され、一方ｌμｍを越える
と被膜除去が困難となる。The thickness of the formed oxide film is 0.1 to 1 μm, more preferably 0.1 μm. It is appropriate to set the thickness to 3 to 0.5 μm. If the film thickness is less than 0.1 μm, the film will penetrate into the surface of the material, reducing the substantial effect, while if it exceeds 1 μm, it will be difficult to remove the film.
酸化処理により表面に酸化被膜を形威したチタン系素材
は、所定の型材を用い最高２５０ｔ／ｍ２の圧力によっ
てプレス加工する。The titanium-based material, which has an oxide film formed on its surface through oxidation treatment, is pressed using a predetermined mold material under a maximum pressure of 250 t/m2.
プレス加工後の素材表面に残存する酸化被膜はパフ研磨
もしくは酸洗のような手段を用いて除去する。The oxide film remaining on the surface of the material after pressing is removed by means such as puff polishing or pickling.
本発明に従えば、チタンおよびチタン基合金などのチタ
ン系素材の表面を予め酸化処理して硬度の高い酸化被膜
を形威しているため、プレス加工時の高圧によっても表
面硬度の変化が殆ど起こらない。したがって、表面の酸
化被膜が潤滑剤的な機能を営みながら圧縮化が進行する
から、常に型材を損ねることなしに円滑かつ高精度のプ
レス加工が可能となる。According to the present invention, since the surface of titanium-based materials such as titanium and titanium-based alloys is oxidized in advance to form a highly hard oxide film, there is almost no change in surface hardness even under high pressure during press working. It won't happen. Therefore, since compression progresses while the oxide film on the surface acts as a lubricant, smooth and highly accurate press working is possible without always damaging the mold material.
〔実施例］
直径３ｍｍのセンターレス丸棒にスエージング加工した
チタン素材を、１％リン酸水溶液の電解浴で化戒電圧８
０ｖで３０分間処理して陽極酸化をおこなった。この陽
極酸化処理によりチタン素材の表面に０、３ｍｍの酸化
被膜が形威された。[Example] A titanium material swaged into a centerless round bar with a diameter of 3 mm was heated to a chemical voltage of 8 in an electrolytic bath of 1% phosphoric acid aqueous solution.
Anodic oxidation was performed by processing at 0 V for 30 minutes. This anodic oxidation treatment formed an oxide film of 0.3 mm on the surface of the titanium material.
ついで、処理後のチタン素材を水洗、乾燥したのちＪ
Ｉｓ．ＳＫＤ−１１の型材を用い、８０ｔｏｎ／ｍ”の
条件でプレス加工をおこなった。Next, after washing the treated titanium material with water and drying it,
Is. Pressing was performed using a mold material of SKD-11 under conditions of 80 ton/m''.
このようにしてプレス加工した材料の表面肌は極めて美
麗で加工公差は±０．０１であった。The surface texture of the material pressed in this way was extremely beautiful, and the processing tolerance was ±0.01.
比較のために、同一のチタン素材を用い酸化被膜を形戒
せずにプレス加工したところ、加工面は荒れた肌をて呈
し目標とする精度が得られないものもあった。したがっ
て、研磨加工しなけらば製品材料として通用しないもの
であった。For comparison, when the same titanium material was press-formed without any formal oxidation coating, the machined surface had a rough surface and the target accuracy could not be achieved in some cases. Therefore, it could not be used as a product material unless it was polished.
以上のとおり、本発明によるプレス方法によれば離型剤
等を用いることなく、常に表面肌の良好な高精度の加工
品を得ることができるから、メガネフレーム用などの線
材を後加工を施さずに安定して提供することが可能とな
る。そのうえ、型材は損傷を伴うことがないから長期間
の使用寿命が保証され、かつ製品の歩留りも極めて高く
なる。As described above, according to the pressing method according to the present invention, high-precision processed products with good surface texture can always be obtained without using a mold release agent, etc., so that wire rods for eyeglass frames etc. can be post-processed. This makes it possible to provide stable supplies without any problems. Moreover, since the profile is not damaged, a long service life is guaranteed, and the product yield is extremely high.
Claims (1)
して表面に酸化被膜を形成し、ついで型材を介してプレ
ス加工を施すことを特徴とするチタン系素材のプレス加
工方法。 ２、酸化被膜を、陽極酸化処理により０．１〜１μｍの
厚さに形成する請求項１記載のチタン系素材のプレス加
工方法。[Claims] 1. A press working method for a titanium-based material, which comprises oxidizing a material made of titanium and a titanium-based alloy to form an oxide film on the surface, and then performing press working through a mold material. . 2. The method for pressing a titanium-based material according to claim 1, wherein the oxide film is formed to a thickness of 0.1 to 1 μm by anodizing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19366089A JPH0357526A (en) | 1989-07-25 | 1989-07-25 | Method for pressing titanium series stock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19366089A JPH0357526A (en) | 1989-07-25 | 1989-07-25 | Method for pressing titanium series stock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0357526A true JPH0357526A (en) | 1991-03-12 |
Family
ID=16311651
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19366089A Pending JPH0357526A (en) | 1989-07-25 | 1989-07-25 | Method for pressing titanium series stock |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0357526A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2020183551A (en) * | 2019-04-26 | 2020-11-12 | 日本製鉄株式会社 | Titanium plate excellent in lubricity and method for manufacturing the same |
-
1989
- 1989-07-25 JP JP19366089A patent/JPH0357526A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2020183551A (en) * | 2019-04-26 | 2020-11-12 | 日本製鉄株式会社 | Titanium plate excellent in lubricity and method for manufacturing the same |
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