JPS609868A - Manufacture of razor blade - Google Patents
Manufacture of razor bladeInfo
- Publication number
- JPS609868A JPS609868A JP11849483A JP11849483A JPS609868A JP S609868 A JPS609868 A JP S609868A JP 11849483 A JP11849483 A JP 11849483A JP 11849483 A JP11849483 A JP 11849483A JP S609868 A JPS609868 A JP S609868A
- Authority
- JP
- Japan
- Prior art keywords
- razor blade
- polymer
- coating
- razor
- edge
- 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
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C8/80—After-treatment
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
- C23C8/36—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases using ionised gases, e.g. ionitriding
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Laminated Bodies (AREA)
- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
Abstract
Description
【発明の詳細な説明】 本発明はカミソリ刃の製造方法に関するものである。[Detailed description of the invention] The present invention relates to a method for manufacturing razor blades.
カミソリ刃は人体に直接当てて使用するものであるから
、ただ単に鋭利であればよいというものでなく、人の肌
を荒れさせないようにすることも必要である。この必要
性を満たすために、従来はカミソリ刃の刃部に４沸化工
゛チル等のポリマーによるコーテ−イングを施して、こ
のポリマ−コーチ１ング部が肌に当たるようにすること
によって、剃り心地をよくし肌を荒れないようにしてい
た。Since razor blades are used by applying them directly to the human body, it is not only necessary that they be sharp, but also that they do not irritate the human skin. In order to meet this need, conventionally the cutting edge of a razor blade is coated with a polymer such as 4-fluorene diethylene chloride, and this polymer coating makes contact with the skin to provide a comfortable shave. I used it to keep my skin from getting rough.
しかしながら、ポリマーコーティングは卸常３００〜５
００℃前後で行なわれており、この温度条件においては
刃部に折角焼入れをしておいてもこれがなまってしまう
という問題があった。その硬度変化の具体的数値どして
は、ビッカース硬さく度；ｋｇｆ ７ｍｍ’ ）で表わ
すと、焼入れ後の硬度に対してコーテイング後において
７０〜１００度の硬度低下があった。However, polymer coatings are usually 300 to 50%
This is done at around 00°C, and under this temperature condition there was a problem that even if the blade part was hardened, it would become dull. The specific numerical value of the change in hardness is expressed in terms of Vickers hardness (kgf 7 mm'), and the hardness decreased by 70 to 100 degrees after coating compared to the hardness after quenching.
これに対処するため、カミソリ刃の製造方法に更に改良
が加えられ、焼入れ後の刃部にプラチナ又はクロム等の
コーティング（又はメッキ）を施して、その後に上述し
たポリマーコーティングを施すような方法が提案された
。これによって、カミソリ刃の表面硬度は、ポリマーコ
ーティングを施した場合にも、プラチナ又はクロム層に
よって保持されるため、上述の問題はある程度なくなっ
た。To deal with this, further improvements have been made to the manufacturing method of razor blades, such as coating (or plating) the blade with platinum or chrome after hardening, and then applying the above-mentioned polymer coating. was suggested. This eliminates the above-mentioned problem to some extent, since the surface hardness of the razor blade is maintained by the platinum or chromium layer, even when a polymer coating is applied.
しかしながら、プラチナ自体は高価なものであるし、ま
たクロムによるメッキ又はコーティングを行なうために
は相当高価な装置を使用しなければならないため、製品
としてのカミソリ刃はその製造コストか相当高価となっ
ていることは勿論のこと、生産性の向上という面からは
工程が多くなっている分だけ手間がかかっているのが実
状である。このことは、特に使い捨てのカミソリ刃にお
いては致命的な欠点となっている。しかも、カミソリ刃
の刃部にプラチナ又はクロムによる層が形成ｙれると、
この層により折角鋭利にした刃部の刃先が丸くなって切
れ味を悪くしている。However, platinum itself is expensive, and plating or coating with chromium requires the use of fairly expensive equipment, so razor blades as products are quite expensive to manufacture. Of course, there are many steps involved, but the reality is that the increased number of steps is time-consuming from the perspective of improving productivity. This is a fatal drawback, especially in disposable razor blades. Moreover, when a layer of platinum or chromium is formed on the edge of the razor blade,
This layer causes the edge of the sharpened blade to become rounded, making it less sharp.
本発明は以上のような実状に鑑みてなされたもので、そ
の要旨は、カミソリ刃のポリマーコーティング処理を施
す前工程で、刃部に４５０℃〜５００゜°Ｃの温度条件
下にてイオン窒化法による表面硬化処理を施すようにす
ることにあり、その目的とするところは、作業効率及び
生産性がよく、しかもポリマーコーティング処理の高熱
に対しても所定の鋭利さと肌２ｕりの良さを失わないカ
ミソリ刃を製造できる方法を提案することにある。The present invention was made in view of the above-mentioned circumstances, and the gist of the invention is to apply ion nitriding to the razor blade under a temperature condition of 450°C to 500°C in the pre-process of applying polymer coating to the razor blade. The purpose of this is to perform surface hardening treatment using a method that improves work efficiency and productivity, and that also maintains its sharpness and smooth texture even under the high heat of polymer coating treatment. The objective is to propose a method for manufacturing razor blades that do not have the same quality.
次に、本発明に係るカミソリ刃の製造方法について説明
する。通常カミソリ刃は、帯鋼をプレスによって穿孔及
び所定の折れ線付けを行なった後幕刃付けを行ない、そ
の後に所定の硬度をもたせるために表面硬化処理を行な
う。本発明においては、この表面硬化処理をイオン窒化
法により行なうものである。イオン窒化を行なうための
装置（１０）は、第１図に示したように、主として真空
反応器（１１）、ガス供給機（１２）、電気ユニット（
１３）および真空ポンプ（１４）とからなっている。イ
オン窒化法法るカミソリ刃（２０）は多数積層されて、
真空反応器（１１）内に電気的に絶縁されてつるされる
か、下におかれる。しかして、真空ポンプ（１４）によ
り真空反応器（１１）内を排気してガス供給機（１２）
から適島な処理ガスを真空反応器（１１）内に供給する
。この場合、真空反応器（１１）内は０．１ｔｏｒｒか
ら１０ｔａｒｒの真空に保持される。そして、カミソリ
刃（２０）を電気ユニット（１，３）の陰極、真空反応
器（１１）の炉壁を陽極側に結合して、直流電圧をカミ
ソリ刃（２０）と炉壁に印加する。これにより１、真空
反応器（１１）内の処理ガスのプラスイオンは陰極側の
力ミンリ刃（２０）に対して加速され、巨大な運動エネ
ルギーをもって各カミソリ刃（２０）の表面に衝突する
。このプラスイオンとカミソリ刃（２０）の衝突により
各カミソリ刃（２０）が加熱され、プラスイオンはカミ
ソリ刃（２０）の表面に吸蔵（窒化）される。Next, a method for manufacturing a razor blade according to the present invention will be explained. Normally, razor blades are made by applying a trailing edge to the steel strip by drilling holes and forming predetermined crease lines using a press, and then subjecting it to a surface hardening treatment to give it a predetermined hardness. In the present invention, this surface hardening treatment is performed by an ion nitriding method. As shown in FIG. 1, the apparatus (10) for performing ion nitriding mainly includes a vacuum reactor (11), a gas supply device (12), and an electric unit (
13) and a vacuum pump (14). A large number of razor blades (20) made using the ion nitriding method are stacked,
It is suspended or placed electrically insulated within the vacuum reactor (11). Then, the inside of the vacuum reactor (11) is evacuated by the vacuum pump (14), and the gas supply device (12) is
A suitable processing gas is supplied into the vacuum reactor (11). In this case, the inside of the vacuum reactor (11) is maintained at a vacuum of 0.1 torr to 10 tarr. Then, the razor blade (20) is connected to the cathode of the electric unit (1, 3), the furnace wall of the vacuum reactor (11) is connected to the anode side, and a DC voltage is applied to the razor blade (20) and the furnace wall. As a result, 1. The positive ions of the processing gas in the vacuum reactor (11) are accelerated against the force-mining blades (20) on the cathode side, and collide with the surface of each razor blade (20) with huge kinetic energy. Each razor blade (20) is heated by the collision between the positive ions and the razor blade (20), and the positive ions are occluded (nitrided) on the surface of the razor blade (20).
次いで、通電を遮断すれば、上記の反応はなくなるから
、各カミノリ刃（２０）は急激に冷却されて表面硬化処
理が完了する。Next, when the electricity is turned off, the above reaction disappears, and each razor blade (20) is rapidly cooled and the surface hardening process is completed.
また、このイオン窒化法においては、処理温度を ４５
０°Ｃ〜 ５００℃に設定した。通常、イオン窒化処理
は、 ４００°Ｃ〜６００℃の温度範囲で行なわれるが
、カミソリ刃（２０）の窒化処理後の内部に残留する応
力の許容範囲及びカミソリ刃（２０）は薄いものである
ので窒化がすすみすぎないようにするためから、このよ
うに設定した。なお、カミソリ刃（２０）の温度維持は
、真空反応器（１１）内の熱電対を使用して、この熱電
対の起電力の大小に応じて電気ユニッ） （＋３）の出
力を変化させることにより調節しながら行なうようにな
っている。In addition, in this ion nitriding method, the processing temperature is 45
The temperature was set at 0°C to 500°C. Normally, ion nitriding treatment is carried out at a temperature range of 400°C to 600°C, but the allowable range of stress remaining inside the razor blade (20) after nitriding treatment and the razor blade (20) are thin. Therefore, this setting was made to prevent nitriding from progressing too much. In addition, the temperature of the razor blade (20) is maintained by using a thermocouple in the vacuum reactor (11) and changing the output of the electric unit (+3) according to the magnitude of the electromotive force of this thermocouple. This is done while making adjustments.
さらに、このイオン窒化処理を施した後の各カミソリ刃
（２０）を４柳化エチル等のポリマーを使用してコーテ
ィング（３０）を行なう。このポリマーコーティング（
３０）は従来の方法をそのまま使用した。（第２図参照
）
ところで、一般に窒化処理が施された鋼の最外層はもろ
いということが知られている。これは、窒化処理物の窒
化層の組織では最外層に白色部のε相（Ｆｅ２−３Ｎ）
の化合物があり、その内側ｒ′相（Ｆｅ４ Ｎ）が不均
一に隣接し、さらに内部はマルチ〉′ザイト的針状組織
があって、これらの化合物層に３次元のミクロな応力が
発生し、これにより窒化処理物の最外層に微細なりラッ
ク（Ｃ）（さけ目）が生ずるからである。（第２図参照
）しかし。Further, each razor blade (20) subjected to the ion nitriding treatment is coated (30) with a polymer such as ethyl tetrachloride. This polymer coating (
30) used the conventional method as is. (See Figure 2) By the way, it is generally known that the outermost layer of nitrided steel is brittle. This is because the structure of the nitrided layer of the nitrided product has a white ε phase (Fe2-3N) in the outermost layer.
The inner r' phase (Fe4N) is non-uniformly adjacent to each other, and there is a multi-'zite-like acicular structure inside, and three-dimensional micro stress is generated in these compound layers. This is because fine racks (C) (seams) are produced in the outermost layer of the nitrided material. (See Figure 2) However.
窒化処理された鋼におけるこの従来の欠点は、本発明に
係るカミソリ製造方法においては積極的に利用きれてい
る。すなわち、窒化処理されたカミソリ刃（２０）にポ
リマーコーティング（３０）を行なうと、ポリマーがク
ラック（Ｃ）内に浸透して、コーテイング後のポリマー
の剥離を防止することができるのである。This conventional drawback of nitrided steel is positively exploited in the razor manufacturing method according to the present invention. That is, when the nitrided razor blade (20) is coated with a polymer (30), the polymer penetrates into the cracks (C), thereby preventing the polymer from peeling off after coating.
しかして、以上のようなカミソリ刃の製造方法によれば
、従来性なわれていたように、カミソリ刃の硬■ｙを維
持するためのプラチナ又はクロムメンキ（又はコーティ
ング）をする必要がないため、カミソリ刃の製造工程を
簡略化できる。また、高価なプラチナや、クロムメッキ
装置を使用しなくてもよく、イオン窒化処理装置（ｌＯ
）でカミソリ刃の表面硬化処理を確実に行なうことがで
きるため、カミソリ刃製造における生産性を向上させる
ことができ作業効率もよくすることができる。そして、
イオン窒化処理を施して得られたカミソリ刃の硬度は、
再度同じ温度以下により焼入れ処理に対しても、硬度低
下がないことが確認されている。（必要に応じてビッカ
ース硬さで１０００度程度までは十分維持することがで
きた。）
さらＬこ、窒化処理された鋼の表面に生じる微細なりラ
ック（Ｃ）（なお、このクラック（Ｃ）は剃り味には影
響をおよぼさない非常に微細なものである。）を積極的
に利用して、肌当りを良好にするコーティング剤の付着
を確実に行なうことができかつその剥離を防止すること
ができる。According to the method for manufacturing razor blades as described above, there is no need to apply platinum or chrome coating (or coating) to maintain the hardness of the razor blade, as was conventionally done. The manufacturing process for razor blades can be simplified. In addition, there is no need to use expensive platinum or chrome plating equipment, and ion nitriding equipment (IO
), the surface hardening treatment of razor blades can be reliably performed, thereby improving productivity and work efficiency in razor blade manufacturing. and,
The hardness of razor blades obtained by ion nitriding treatment is
It has been confirmed that there is no decrease in hardness even after quenching at the same temperature or lower. (We were able to maintain a Vickers hardness of up to about 1000 degrees if necessary.) Further, the fine cracks (C) that occur on the surface of nitrided steel (this crack (C) (These are very fine particles that do not affect the shave quality.) By actively utilizing these particles, the coating material that gives a good feel to the skin can be reliably attached and prevent its peeling. can do.
以上詳述したとおり、本発明においては、」−記実施例
にて例示したごとく、カミソリ刃に４沸化エチル等のポ
リマーによるコーティング処理を施す前工程で、カミソ
リ刃に４５０°Ｃ〜５００°Ｃの温度条件下にてイオン
窒化法による表面硬化処理を施すようにしたことにその
特徴があり、これにより、所定の硬度及び肌当りのよさ
を有したカミソリ刃を良好な生産性及び作業効率にて提
供することができる。As described in detail above, in the present invention, as exemplified in the embodiment, the razor blade is heated at 450°C to 500°C in the pre-process of coating the razor blade with a polymer such as ethyl tetrafluoride. Its unique feature lies in the fact that the surface is hardened by ion nitriding under temperature conditions of It can be provided at
第１図はイオン窒化処理装置の概略構成図、第２図は完
成後のカミソリ刃を示す拡大断面図である。
符号の説明
１０・・・・ イオン窒化処理装置、２０・・・ カミ
ソリ刃。
Ｃ・・・ クラック。FIG. 1 is a schematic diagram of the ion nitriding treatment apparatus, and FIG. 2 is an enlarged sectional view showing a completed razor blade. Explanation of symbols 10... Ion nitriding treatment equipment, 20... Razor blade. C... Crack.
Claims (1)
ング処理を施す前工程で、前記カミソリ刃に４５０℃〜
５００°Ｃの温度条件下にてイオン窒化法による表面硬
化処理を施すようにしたことを特徴とするカミソリ刃の
製造方法。In the pre-process of coating the razor blade with a polymer such as ethyl tetrafluoride, the razor blade is heated to
A method for manufacturing a razor blade, characterized in that a surface hardening treatment is performed by an ion nitriding method under a temperature condition of 500°C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11849483A JPS609868A (en) | 1983-06-30 | 1983-06-30 | Manufacture of razor blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11849483A JPS609868A (en) | 1983-06-30 | 1983-06-30 | Manufacture of razor blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS609868A true JPS609868A (en) | 1985-01-18 |
Family
ID=14738056
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11849483A Pending JPS609868A (en) | 1983-06-30 | 1983-06-30 | Manufacture of razor blade |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS609868A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2321653A (en) * | 1997-02-03 | 1998-08-05 | Kimberly Clark Co | Creping doctor blades |
| WO2005005110A1 (en) * | 2003-07-15 | 2005-01-20 | Koninklijke Philips Electronics N.V. | A coated cutting member having a nitride hardened substrate |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55102471A (en) * | 1979-01-30 | 1980-08-05 | Honda Motor Co Ltd | Coating with nitriding as pretreatment |
-
1983
- 1983-06-30 JP JP11849483A patent/JPS609868A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55102471A (en) * | 1979-01-30 | 1980-08-05 | Honda Motor Co Ltd | Coating with nitriding as pretreatment |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2321653A (en) * | 1997-02-03 | 1998-08-05 | Kimberly Clark Co | Creping doctor blades |
| GB2321653B (en) * | 1997-02-03 | 2001-02-28 | Kimberly Clark Co | Method for creping tissue |
| WO2005005110A1 (en) * | 2003-07-15 | 2005-01-20 | Koninklijke Philips Electronics N.V. | A coated cutting member having a nitride hardened substrate |
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