JPS62230634A - Mold for press-forming of high-precision formed glass article - Google Patents
Mold for press-forming of high-precision formed glass articleInfo
- Publication number
- JPS62230634A JPS62230634A JP28383086A JP28383086A JPS62230634A JP S62230634 A JPS62230634 A JP S62230634A JP 28383086 A JP28383086 A JP 28383086A JP 28383086 A JP28383086 A JP 28383086A JP S62230634 A JPS62230634 A JP S62230634A
- Authority
- JP
- Japan
- Prior art keywords
- mold
- precision
- forming
- single crystal
- press
- 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
- 239000011521 glass Substances 0.000 title claims abstract description 18
- 239000013078 crystal Substances 0.000 claims abstract description 22
- 239000000463 material Substances 0.000 claims abstract description 14
- 229910000510 noble metal Inorganic materials 0.000 claims abstract description 8
- 229910001385 heavy metal Inorganic materials 0.000 claims abstract description 7
- 239000000956 alloy Substances 0.000 claims abstract description 6
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 5
- 238000000465 moulding Methods 0.000 claims description 28
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 abstract description 14
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 abstract description 6
- 229910052697 platinum Inorganic materials 0.000 abstract description 5
- 239000003966 growth inhibitor Substances 0.000 abstract description 3
- 229910052759 nickel Inorganic materials 0.000 abstract description 3
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052750 molybdenum Inorganic materials 0.000 abstract description 2
- 239000011733 molybdenum Substances 0.000 abstract description 2
- 238000005498 polishing Methods 0.000 abstract description 2
- 238000005299 abrasion Methods 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 abstract 1
- 230000002542 deteriorative effect Effects 0.000 abstract 1
- 230000003746 surface roughness Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 238000012360 testing method Methods 0.000 description 5
- 230000003287 optical effect Effects 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000010970 precious metal Substances 0.000 description 3
- 229910000923 precious metal alloy Inorganic materials 0.000 description 3
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000005499 meniscus Effects 0.000 description 1
- 238000004554 molding of glass Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000007517 polishing process Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 229910052845 zircon Inorganic materials 0.000 description 1
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B11/00—Pressing molten glass or performed glass reheated to equivalent low viscosity without blowing
- C03B11/06—Construction of plunger or mould
- C03B11/08—Construction of plunger or mould for making solid articles, e.g. lenses
- C03B11/084—Construction of plunger or mould for making solid articles, e.g. lenses material composition or material properties of press dies therefor
- C03B11/086—Construction of plunger or mould for making solid articles, e.g. lenses material composition or material properties of press dies therefor of coated dies
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B2215/00—Press-moulding glass
- C03B2215/02—Press-mould materials
- C03B2215/08—Coated press-mould dies
- C03B2215/14—Die top coat materials, e.g. materials for the glass-contacting layers
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B2215/00—Press-moulding glass
- C03B2215/02—Press-mould materials
- C03B2215/08—Coated press-mould dies
- C03B2215/14—Die top coat materials, e.g. materials for the glass-contacting layers
- C03B2215/16—Metals or alloys, e.g. Ni-P, Ni-B, amorphous metals
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B2215/00—Press-moulding glass
- C03B2215/02—Press-mould materials
- C03B2215/08—Coated press-mould dies
- C03B2215/14—Die top coat materials, e.g. materials for the glass-contacting layers
- C03B2215/16—Metals or alloys, e.g. Ni-P, Ni-B, amorphous metals
- C03B2215/17—Metals or alloys, e.g. Ni-P, Ni-B, amorphous metals comprising one or more of the noble meals, i.e. Ag, Au, platinum group metals
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、加熱された予備成形ガラスをプレスして、極
めて高い表面精度と表面粗度を有するガラス製品、とく
に光学素子の精密プレス成形用に適した鋳型に関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention is directed to pressing heated preformed glass to produce glass products with extremely high surface precision and surface roughness, particularly for precision press molding of optical elements. Concerning molds suitable for.
近年、軟化ガラスを精密プレス成形して、光学レンズ等
の光学素子を直接成形する技術が種々提案されてきてい
るが、その一般的最終成形品は。In recent years, various techniques have been proposed for precision press molding softened glass to directly mold optical elements such as optical lenses, but the general final molded products are as follows.
光学面の表面精度がニュートン６木以内、で不規則性が
入／２以内１表面粗度が０．０２ＩＬｍ以内に収まって
いることが望まれる。It is desirable that the surface precision of the optical surface is within Newton 6, and the irregularity is within 1/2 and the surface roughness is within 0.02 ILm.
と記要望を満たすための種々の技術的要因の中で、鋳型
の占める比重は極めて大きい、すなわち。Among the various technical factors to meet these demands, the mold plays an extremely large role.
ガラスをプレス成形する際に、鋳型面をガラスに密着さ
せて抑圧を加え、＃Ｊｆ型の表面特性をガラス表面に転
写して成形品の表面を形成するので、成形品の表面特性
は、鋳型成形面の表面特性に大きく依存するものである
。When press-molding glass, the surface of the mold is brought into close contact with the glass to apply pressure, and the surface characteristics of the #Jf type are transferred to the glass surface to form the surface of the molded product. It largely depends on the surface characteristics of the molding surface.
従って、 Ｅ）、ｊ型の成形面は、上記岐路ガラス成形
品に要望される表面特性を満足するに十分な転写効果を
発揮し得る高精度研に？面を有することが必要であり、
一般に、ノ、（準曲晶に対する表面精度が入／２以内に
なるように研磨加工され、また表面粗度が０．０２＃Ｌ
ｍ以内であることが要求される。Therefore, E), the molding surface of the J-type should be polished with high precision that can exhibit sufficient transfer effect to satisfy the surface characteristics required for the above-mentioned crossroads glass molded product. It is necessary to have a surface,
In general, it is polished so that the surface accuracy for quasi-curved crystals is within /2, and the surface roughness is 0.02#L.
m or less.
しか争、従来からガラスの精密プレス成形用鋳型として
知られているステンレス鋼ないし各種耐熱合金鋼製の金
型は、熱間でくり返し使用される間にその表面が経時的
に組織変化をおこして表面精度や表面粗度が劣化しやす
くなるため、金型の寿命が短いという欠点がある。また
、これらの金型の表面を特殊耐熱金属性の薄膜で被覆し
て、上記の欠点を補う技術も知られているが、′、ＡＭ
や摩耗が生じ易いので十分な効果を得難い。However, the problem is that molds made of stainless steel or various heat-resistant alloy steels, which have traditionally been known as molds for precision press molding of glass, undergo structural changes over time during repeated use in hot conditions. The disadvantage is that the life of the mold is short because the surface accuracy and surface roughness tend to deteriorate. There is also a known technique to cover the surface of these molds with a special heat-resistant metal thin film to compensate for the above drawbacks.
It is difficult to obtain sufficient effects because it is easy to cause wear and tear.
一方、上記金属材料に代り、炭化珪素や窒化珪素などの
セラミック焼結体もこの種の用途の型材として使用し得
ることが知られている。しかし、このようなセラミック
材料は、多結晶であるために大きな結晶粒界や粒界気孔
が存在し、上記所望の表面粗度を得ることがむずかしい
、そのうえ１、ｔｆｌ硬質材料であるので機械加工性に
難がある。On the other hand, it is known that ceramic sintered bodies such as silicon carbide and silicon nitride can also be used as mold materials for this type of application instead of the above-mentioned metal materials. However, since such ceramic materials are polycrystalline, large grain boundaries and grain boundary pores exist, making it difficult to obtain the desired surface roughness. I have trouble with sex.
本発明の目的は、上記従来から知られている鋳型の諸欠
点を解消した新規な高精度ガラス成形品のプレス成形用
鋳型を提供することにある。An object of the present invention is to provide a novel press molding mold for high-precision glass molded products, which eliminates the various drawbacks of the conventionally known molds.
〔問題点を解決するための手段〕
上記目的を達成するため、本発明者らは、種々の型材に
ついて試験研究を重ねた結果、結晶成長防止剤の添加に
より高温使用特性が強化された（以ド巾に強化されたと
いう）貴金属および貴金属合金は超微細な結晶組織を有
しており、また単結晶重金属は均一な結晶組織を有して
いるので、表面粗度が０．０２ｐｍ以内の高精度面が得
易く、また高温で使用しても表面の化学的変質や再結晶
化等が起り難く、しかも、機械的強度が大きいので、こ
の種のプレス成形用Ｈ型の型材として好適であることを
みいだし本発明をなすに至った。[Means for solving the problem] In order to achieve the above object, the present inventors conducted repeated test and research on various mold materials, and as a result, the high-temperature use characteristics were strengthened by adding a crystal growth inhibitor (hereinafter referred to as Precious metals and precious metal alloys have ultrafine crystal structures, and single-crystal heavy metals have uniform crystal structures. It is suitable as an H-shaped material for this type of press molding because it is easy to obtain precision, and it is difficult to cause chemical deterioration or recrystallization of the surface even when used at high temperatures, and it has high mechanical strength. We have discovered this and have come up with the present invention.
本発明にかかる高精度ガラス成形品のプレス成形用鋳型
の特徴は、前記特許請求の範囲に記載のとおり、高精度
成形面を有し、少くとも上記成形面が強化された貴金属
、強化された貴金属合金および単結晶重金属から選ばれ
た１種類の屯−材料で形成されているところにある。The press-molding mold for high-precision glass molded products according to the present invention is characterized in that it has a high-precision molding surface, and at least the molding surface is made of a reinforced noble metal or reinforced metal. It is made of one type of material selected from noble metal alloys and single crystal heavy metals.
未発り１の実施において、上記の強化された貴金属材料
としては１種々の結晶成長防止剤によるものがあるが、
例えば、ジルコニアを添加したＺＧＳ （Ｚｉｒｃｏｎ
ｉａ Ｇｒａｉｎ ５ｔａｂｉｌｉｚｅｄ ） −Ｐ
ｔと称される強化白金を使用することが好ましい、また
、ｌ二記の強化された貴金属合金材料としては、ＺＧＳ
−’ＰＬ ＠Ｒｈ、ＺＧＳ−Ｐｔ−Ｒｈ−Ａｕ等を、さ
らに単結晶重金属材料としては、単結晶白金、単結晶ニ
ッケルおよび単結晶モリブデンを使用することが好まし
い、これらの材料で鋳型成形面を形成するにちっては、
ｐＩ型全体をこれらの材料で構成してもよいが、これら
の材料は、いずれも高価であるので１種々の接合技術や
薄膜形成技術を適用して、成形面部のみをこれらの材料
で構成することが好ましい。In the implementation of Miyabi 1, the above-mentioned strengthened precious metal materials include those using various crystal growth inhibitors,
For example, ZGS with zirconia added (Zircon
ia Grain 5 tabilized) -P
It is preferable to use reinforced platinum called T, and as the strengthened precious metal alloy material of I2, ZGS
-'PL @Rh, ZGS-Pt-Rh-Au, etc., and as single-crystal heavy metal materials, it is preferable to use single-crystal platinum, single-crystal nickel, and single-crystal molybdenum. When it comes to forming,
The entire pI type may be made of these materials, but since these materials are all expensive, it is recommended to apply various bonding techniques or thin film forming techniques to make only the molding surface part of these materials. It is preferable.
また、本発明のヒ記鋳型材料の成形面は、公知の研削研
磨加重または超精密旋盤加工等の技術により所望の高精
度面に仕−ヒげることができる。Further, the molding surface of the mold material of the present invention can be finished into a desired high-precision surface by known techniques such as grinding, polishing, and ultra-precision lathe machining.
つぎに本発明にかかる高精度ガラス成形品のプレス成形
用鋳型の好適な実施例について説明する。Next, a preferred embodiment of the press molding mold for a high-precision glass molded product according to the present invention will be described.
ＺＧＳ−Ｐｔ、ＺＧＳ−Ｐｔ−Ｒｈ１０％。ZGS-Pt, ZGS-Pt-Rh10%.
単結晶白金および単結晶ニッケルの各材料をそれぞれ研
削して、所定の予備成形曲面を右するｌＯφｘｔｔ、ｔ
ｏφＸ２ｔおよび１０φｘｔｏｔの円板を作り、これら
を５ＵＳ４２０Ｊ２ｔたはインコネルｘ７５０からなる
鋳型母材の表面に成形面部材としてロー付けまたは組込
むことにより両者を一体化した。ロー付けに際しては、
いずれも真空中で熱処理することにより強固に接合させ
た。ついで、上記の予備成形曲面を砂かけおよび研府し
、高精度成形面を有する鋳型を作製した。Each material of single-crystal platinum and single-crystal nickel is ground to form a predetermined preformed curved surface lOφxtt,t
Discs of o φ When soldering,
Both were firmly bonded by heat treatment in vacuum. Next, the preformed curved surface was sanded and polished to produce a mold having a high precision molding surface.
このようにして得た鋳型は、いずれも成形面精度が入／
１０以内であり、表面粗度が０．０２ｇｍ以内であった
。またこれらの鋳型は、耐用試験を行った結果、長期間
の使用に十分耐え得ることが認められた。The molds obtained in this way all have molding surface accuracy.
10 or less, and the surface roughness was within 0.02 gm. Furthermore, as a result of a durability test, these molds were found to be sufficiently durable for long-term use.
表−１に、これらの鋳型を用いてメニスカス凸レンズ（
口径＝ １０．０ｍｍ、中心厚＝３．０ａｍ）を種々の
成形条件（Ａ −Ｄ）で成形した際の試験結果（実施例
ＮＯ，１−ｒｂ！Ｊ）を、公知の鋳型を用いた場合の試
験結果（比較倒動、１′〜Ｎｏ、１２’）とともに示す
、また１表−１の成形条件（Ａ−Ｄ）を表−２に示す。Table 1 shows how these molds are used to make meniscus convex lenses (
The test results (Example NO, 1-rb!J) when molding a molded material (diameter = 10.0 mm, center thickness = 3.0 am) under various molding conditions (A-D) using a known mold The molding conditions (A-D) in Table 1 are shown in Table 2 along with the test results (comparative inversion, 1' to No. 12').
表−１の実施例および比較例における鋳型の耐用試験は
、いずれも、両面研唐した所定形状のガラス円板を予備
成形し、電気炉中で加熱軟化し。In the durability test of the molds in the Examples and Comparative Examples shown in Table 1, a glass disk of a predetermined shape with both sides sharpened was preformed and heated and softened in an electric furnace.
これを表−２の成形条件でプレス成形し、転移温度以下
に冷却した後ｇｌ型するという操作を５００回、または
１５０回緑返したものである。This was press-molded under the molding conditions shown in Table 2, cooled to below the transition temperature, and then molded into a GL mold, which was repeated 500 times or 150 times.
（以下余白） 表＝１から明らかなとおり、比較例間、１′〜Ｍ。(Margin below) As is clear from Table 1, between the comparative examples, 1' to M.
１２″においては、いずれの場合も、鋳型成形面に劣化
現象がみられ、このため、レンズの表面粗度が悪化し、
また良好な離型性および／または高精度の表面精度を維
持できない、これに対し、本発明の実施例ＮＯ，１−ｒ
ｂ、ｔＨにおいては、鋳型成形面に問題となる変化が認
められず、また離型性も良好であって、高精度の表面精
度と表面粗度を維持し得る。12", deterioration phenomena were observed on the molding surface in all cases, and as a result, the surface roughness of the lens deteriorated,
In addition, good mold releasability and/or high surface precision cannot be maintained.
In b and tH, no problematic changes were observed on the molding surface, and the mold releasability was also good, allowing high surface precision and surface roughness to be maintained.
なお１本発明の実施例において、必要に応じ離型性を改
善するため雰囲気を非酸化性雰囲気とすることができる
。Note that in the embodiments of the present invention, the atmosphere can be set to a non-oxidizing atmosphere in order to improve mold releasability, if necessary.
以上、本発明の実施例についてのべたが、本発明は、上
記実施例に限定されるものではなく、たとえば鋳型成形
面部材の加工等に際しては、公知の技術を適宜利用し得
る。Although the embodiments of the present invention have been described above, the present invention is not limited to the above-mentioned embodiments. For example, when processing a molded surface member, etc., known techniques may be appropriately utilized.
以上のべたとおり１本発明の高精度ガラス成形品のプレ
ス成形用鋳型は、強化された貴金属ないし貴金属合金ま
たは単結晶重金属を＃！Ｉ型成形面の形成材料とするも
のであるから、研削、研磨加工工程で高精度表面特性が
得易く、また高温で長期間反復使用しても鋳型成形面の
高精度表面特性が組織変化、化学変化および摩耗等によ
り劣化し難いので、高精度ガラス成形品を安定して効率
的にプレス成形することができる。As mentioned above, the press-forming mold for high-precision glass molded products of the present invention is made of reinforced precious metals, precious metal alloys, or single crystal heavy metals. Since it is used as the forming material for the I-shaped molding surface, it is easy to obtain high-precision surface characteristics in the grinding and polishing process, and even after repeated use at high temperatures for a long period of time, the high-precision surface characteristics of the molding surface will not change due to microstructural changes. Since it is resistant to deterioration due to chemical changes, wear, etc., high-precision glass molded products can be stably and efficiently press-molded.
したがって１本発明の鋳型は、高精度ガラス成形品のプ
レス成形に好適であり、産業上有用である。Therefore, the mold of the present invention is suitable for press molding of high-precision glass molded products and is industrially useful.
Claims (1)
貴金属、強化された貴金属合金および単結晶重金属から
選ばれた１種類の材料で形成されていることを特徴とす
る高精度ガラス成形品のプレス成形用鋳型。High-precision glass molding having a high-precision molding surface, at least the molding surface being made of one type of material selected from a reinforced noble metal, a reinforced noble metal alloy, and a single-crystal heavy metal. Mold for press molding of products.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60-277100 | 1985-12-09 | ||
| JP27710085 | 1985-12-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62230634A true JPS62230634A (en) | 1987-10-09 |
Family
ID=17578773
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28383086A Pending JPS62230634A (en) | 1985-12-09 | 1986-11-28 | Mold for press-forming of high-precision formed glass article |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62230634A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02188433A (en) * | 1989-01-13 | 1990-07-24 | Matsushita Electric Ind Co Ltd | Optical glass molded body and molding method thereof and thermal processing jig utilized therefor |
-
1986
- 1986-11-28 JP JP28383086A patent/JPS62230634A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02188433A (en) * | 1989-01-13 | 1990-07-24 | Matsushita Electric Ind Co Ltd | Optical glass molded body and molding method thereof and thermal processing jig utilized therefor |
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