JPS5819395A - Lubricant for hot molding of steel stock - Google Patents
Lubricant for hot molding of steel stockInfo
- Publication number
- JPS5819395A JPS5819395A JP56118173A JP11817381A JPS5819395A JP S5819395 A JPS5819395 A JP S5819395A JP 56118173 A JP56118173 A JP 56118173A JP 11817381 A JP11817381 A JP 11817381A JP S5819395 A JPS5819395 A JP S5819395A
- Authority
- JP
- Japan
- Prior art keywords
- lubricant
- graphite
- polyamide resin
- mixt
- film
- 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
Abstract
Description
【発明の詳細な説明】
本発明は、鋼材の熱間加工用潤滑剤に関するものである
。鋼材を熱間加工する際には工具類と鋼材との間の摩擦
を中わらげるための潤滑剤として、黒鉛と有機油状物例
えば重油やタールとの混合物が有効であることはすでに
周知のことである。しかし、これらの減雄剤が高温で使
用された場合、熱による油分の分解によシ、煙、炎、臭
気の発生があるため、安全衛生の面で問題があシ、同時
に淘滑効呆の低減にもなる。またマンドレルによプ鋼材
をブレス穿孔し、鋼管を成形する開孔工程でマンドレル
と鋼材との間の摩擦の低減や、ｉンドレル表面の保護な
どの目的に、ガラスが潤滑剤として有効であることは良
く知られている。しかしガラスを潤滑剤に使用すると、
芽孔時にガラスがマンドレルに融看し、穿孔後にガラス
が冷却するとともに固着して除去が困難となる。ガラス
が付着したまま次の穿孔を行うと、鋼管の内面に疵が発
生するなどの問題をかかえている。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a lubricant for hot working of steel materials. It is already well known that a mixture of graphite and an organic oil such as heavy oil or tar is effective as a lubricant to reduce friction between tools and steel when hot working steel. That's true. However, when these masculinizing agents are used at high temperatures, the oil decomposes due to the heat, producing smoke, flames, and odors, which poses safety and health problems, and at the same time, the sterilization effect decreases. It also reduces the In addition, glass is effective as a lubricant for purposes such as reducing friction between the mandrel and the steel material and protecting the surface of the indrel during the hole-opening process of forming steel pipes by press-drilling the steel material with a mandrel. is well known. However, when glass is used as a lubricant,
The glass fuses with the mandrel during bud drilling, and after drilling, the glass cools and solidifies, making it difficult to remove. If the next hole is drilled with glass still attached, there are problems such as scratches occurring on the inner surface of the steel pipe.
黒鉛が固体潤滑剤としての役割を果すには摩擦面に適当
な被膜を形成することによって効果がより大きく発揮さ
れる。しかしながら黒鉛単独では被膜形成能に難があシ
、また乾燥摩擦時において黒鉛被膜の耐久性に欠けるう
えに、相手材への移着性にも乏しい。In order for graphite to play the role of a solid lubricant, the effect is more greatly exhibited by forming an appropriate film on the friction surface. However, graphite alone has poor film-forming ability, and the graphite film lacks durability during dry friction, as well as poor adhesion to the mating material.
本発明は黒鉛単独での欠点をなくシ、鋼材に対して均一
なかつ密着性のよい黒鉛被膜を容易に形成させるもので
ある。すなわち、黒鉛微粉末とともにポリアミド樹脂の
微粉末を混在させることによって加熱された鋼材表面に
付着すると同時にポリアミド樹脂微粉末が軟化・溶融し
てフィルムを形成するに伴いフィルム上に黒鉛微粉末が
被覆される。The present invention eliminates the drawbacks of graphite alone and allows a uniform graphite coating with good adhesion to be easily formed on steel materials. That is, by mixing fine graphite powder with fine polyamide resin powder, it adheres to the heated steel surface, and at the same time, the fine polyamide resin powder softens and melts to form a film, and the fine graphite powder is coated on the film. Ru.
鋼材表面に黒鉛層を形成させる方法としては、黒鉛とポ
リアミド樹脂の混合機粉末を入れた流動浸漬槽、あるい
は単なる浸漬槽に加熱された銅材を挿入し浸漬すること
によって銅材表面に黒鉛皮＆膜を形成させることができ
る。To form a graphite layer on the surface of a steel material, a graphite layer is formed on the surface of the copper material by inserting a heated copper material into a fluidized immersion bath containing mixed powder of graphite and polyamide resin, or simply inserting a heated copper material into a immersion bath. & A film can be formed.
本発明はさらに黒鉛とポリアミド樹脂微粉末に、分散・
懸濁剤を添加することによって水に均一分散・懸濁させ
ることが可能である。すなわち分散・懸濁液を加熱され
た鋼材にスプレーすることによってポリアミド樹脂微粉
末が付着溶融しフィルムを形成し同時に黒鉛微粉末の被
覆膜が４布される。The present invention further includes dispersing and dispersing graphite and polyamide resin fine powder.
By adding a suspending agent, it is possible to uniformly disperse/suspend in water. That is, by spraying the dispersion/suspension onto a heated steel material, fine polyamide resin powder adheres and melts to form a film, and at the same time four coating films of fine graphite powder are applied.
ポリアミド樹脂の溶融点はアミド基（−ＣＯＮＨ−）の
割合に関係し、アミド基の減少につれて融点は低下する
。また共重合体になると融点が低下する。The melting point of a polyamide resin is related to the proportion of amide groups (-CONH-), and the melting point decreases as the number of amide groups decreases. Moreover, when it becomes a copolymer, the melting point decreases.
すなわちナイロン６／６６の共重合体の融点は１６０℃
であシ、ナイロン６の融点は２１５℃である。In other words, the melting point of the nylon 6/66 copolymer is 160°C.
The melting point of nylon 6 is 215°C.
ポリアミド樹脂の融点が異なるものを同時に混在させる
ことによって加熱された鋼材の温度に応じて、黒鉛微粉
末の被覆層−を形成芒せることが容易となる。もちろん
単一成分のポリアミド樹脂を用いても何んら差し支えな
い。By simultaneously mixing polyamide resins with different melting points, it becomes easy to form a coating layer of fine graphite powder depending on the temperature of the heated steel material. Of course, there is no problem in using a single component polyamide resin.
ポリアミド樹脂は融点以上の温度ではきわめて流動性が
あシ、゛被膜を形成しやすくさらに潤滑性に冨んでいる
。Polyamide resin has extremely low fluidity at temperatures above its melting point, easily forms a film, and is rich in lubricity.
黒鉛及びポリアミド樹脂の微粉末を水に均一分散・懸濁
させるために必賛な分散・懸濁剤或いは、よシ効果的に
懸濁させるための助剤として使用される増粘剤尋は、一
般によく用いられているカゼインや動物性ゼラチン、植
物性のアラビャコ９ム、アルギン酸、或いは澱粉、デキ
ス） ＩＪン、合成品のＭＣ，ＣＭＣなどのセルロース
誘導体やポリビニルアルコール、ポリアクリル酸塩、界
面活性剤などのほか無機系のシリカコロイド、ベントナ
イト粘土などが同様な目的で使用される。Thickeners are essential dispersing and suspending agents for uniformly dispersing and suspending graphite and polyamide resin fine powders in water, and thickeners are used as auxiliary agents for more effective suspension. Commonly used casein, animal gelatin, vegetable arabic acid, alginic acid, starch, dextrin, IJ, synthetic products such as MC and CMC, cellulose derivatives, polyvinyl alcohol, polyacrylates, and surfactants. In addition to such agents, inorganic silica colloids and bentonite clay are also used for similar purposes.
本発明の潤滑剤は、％にマンドレルを使用する圧延や鍛
造に有効である。すなわち、本発明は黒鉛とボリアオド
樹脂の微粉末を主剤としたもので、加熱されたマンドレ
ルパーに、（１）流動浸漬法によるか、単に浸漬法によ
って潤滑被膜を形成させるか、（２）上記主剤と分散・
懸濁・増粘剤尋を混在させ、これら混合物を水に懸濁さ
せてスプレー法によって潤滑被覆を形成させる。The lubricant of the present invention is effective in rolling and forging using a mandrel. That is, the present invention uses fine powders of graphite and boriaod resin as main ingredients, and forms a lubricating film on a heated mandrel par by (1) a fluidized dipping method or a simple dipping method, or (2) the above-mentioned methods. Main agent and dispersion
A suspending agent and a thickening agent are mixed, the mixture is suspended in water, and a lubricating coating is formed by a spray method.
すなわち（すは直接乾燥状態で、（２）は水に懸濁させ
てスプレー法によってマンドレルパーの表面に固体潤滑
被ｅＪ！膜を形成させることが可能である。That is, it is possible to form a solid lubricant eJ! film on the surface of the mandrel par by a spray method by suspending (2) in water while (2) is in a directly dry state.
本発明は乾燥状態で使う場合は、黒鉛に対し、ポリアミ
ド樹脂の含有量は１〜５０ｉ−Ｊｉ４の範囲（５）
で加えられるが、ポリアミド樹脂の浴融による造脱厚み
も考え、好ましくはｌＯ〜３０俤量がよい。When the present invention is used in a dry state, the content of polyamide resin is added to graphite in the range of 1 to 50i-Ji4 (5), but considering the thickness of the polyamide resin by bath melting, it is preferable to add lO ~30 weight is good.
また水に分散・懸濁させるに必要な分散・懸濁剤増粘剤
等の黒鉛に一対する割合は２０ｆｆｉｌｉｔｌ以下の範
囲で加えられるが、適量とし２ては０５Ｌ４〜５係童が
好ましい。Further, the dispersing/suspending agent thickener necessary for dispersing/suspending the graphite in water is added in a proportion of 20 ffilitl or less, but the appropriate amount is preferably 05L4-5.
以下本発明を実施例によシ説明する。The present invention will be explained below using examples.
実施例１
粒度５〜６０μの歓粉黒鉛７２憾、粒度４０〜６０μの
ポリアミド共重合体樹脂粉末２８係からなる高温用潤滑
剤の成分を乾燥状態で混合した。Example 1 Components of a high-temperature lubricant consisting of 72 parts of powder graphite having a particle size of 5 to 60 μm and 28 parts of polyamide copolymer resin powder having a particle size of 40 to 60 μm were mixed in a dry state.
この混合潤滑剤をマンドレル圧延機に適用した。This mixed lubricant was applied to a mandrel rolling mill.
黒鉛粉末と混在しているポリアミド共重合体樹脂粉末が
入っている流′ＩｊｊＪ浸漬槽に加熱されているマンド
レルパーを挿入し、ポリアミド樹脂の溶融膜管形成させ
ると同時に黒鉛微粉末の被蝋層を付着させる。ポリアミ
ド樹脂浴＠フィルム及び黒鉛の付着ｉｔは流動浸漬時間
によってｉｌｌ＆Ｉ整可能であシ、継ぎ目無し鋼管の加
工に有効な固体鈎滑被膜が形成される。A heated mandrel parser is inserted into a dipping tank containing polyamide copolymer resin powder mixed with graphite powder to form a molten film tube of polyamide resin, and at the same time, a waxed layer of fine graphite powder is formed. Attach. The adhesion of the polyamide resin bath@film and graphite can be made ill & I by fluidized immersion time, and a solid hooked coating is formed which is effective for processing seamless steel pipes.
（６）
実施例２
粒度５〜３０μの黒鉛粉末７４，５優、粒度１０〜１０
０μのポリアミド樹脂粉末２３優及びアラビアゴム２．
５係からなる高温潤滑剤の成分を乾燥状態で均一に混合
させた。使用に先きだってこのものを水圧分散・懸濁さ
せた１水に対する固形物の量は２０俤とした。この懸濁
液にマンドレルバーを浸漬した。熱せられているマンド
レルバ−表面で水分が蒸発しポリアミド樹脂フィルムが
形成され同時に黒鉛被稜膜が得られる。(6) Example 2 Graphite powder with a particle size of 5 to 30 μ, 74.5 excellent, a particle size of 10 to 10
0μ polyamide resin powder 23% and gum arabic 2.
The components of a high temperature lubricant consisting of five components were uniformly mixed in a dry state. Prior to use, this product was hydraulically dispersed and suspended in an amount of 20 tons per 1 water. A mandrel bar was immersed in this suspension. Moisture evaporates on the surface of the heated mandrel bar, forming a polyamide resin film, and at the same time, a graphite film is obtained.
実施例３
粒度５〜５０μの黒鉛粉末７２俤、粒度１０〜１００μ
のポリアンド共重合体樹脂粉末２４優及びデキストリン
４％を乾燥状態で混合した。これら固形物を水に懸濁さ
せて使用する。水に対する固形物の割合は懸濁液の全重
量の３５優とした。Example 3 72 tons of graphite powder with a particle size of 5 to 50μ, a particle size of 10 to 100μ
24% polyand copolymer resin powder and 4% dextrin were mixed in a dry state. These solids are used by suspending them in water. The ratio of solids to water was 35% of the total weight of the suspension.
この潤滑剤の混合物は、継目無し鋼管の加工に使用され
る圧延機のマンドレルにスプレーされる。This lubricant mixture is sprayed onto the mandrel of a rolling mill used to process seamless steel pipes.
熱せられているマンドレルパー表面にポリアミド樹脂フ
ィルムが形成され同時に黒鉛粉末が付着し、（７）
滑性能が優れている。測定結果を次表に示す。A polyamide resin film is formed on the surface of the heated mandrel par, and at the same time graphite powder adheres to it, resulting in (7) excellent sliding performance. The measurement results are shown in the table below.
実施例４
粒度５〜６０μの黒鉛粉末７５優、粒度ｌＯ〜１００μ
のボリア−ミド共重合体樹脂粉末２０９６及びアラビア
ジム５係をコロイダルシリカ（ＳＩＯ２０、０２１）を
含有する水に懸濁させて使用する、懸濁液に対する上記
固形物の蓋は５０％とした。この潤滑剤の混合物は継ぎ
目無し鋼管の加工に使用される圧延機の；ンドレルにス
プレーされる。熱せられているマンドレルバ−表面でポ
リアミド樹脂が溶融しフィルムを形成すると同時に黒鉛
粉末が付着し高温潤滑に適した被徨脱が得られる。Example 4 Graphite powder 75% with particle size 5-60μ, particle size 10-100μ
Boria-amide copolymer resin powder 2096 and arabicium 5 were suspended in water containing colloidal silica (SIO 20, 021), and the solid content of the suspension was 50%. This lubricant mixture is sprayed onto the roll of a rolling mill used to process seamless steel pipes. The polyamide resin melts on the surface of the heated mandrel bar to form a film, and at the same time graphite powder adheres to the surface of the mandrel bar, resulting in a traverse release suitable for high-temperature lubrication.
上記実施例１〜４の熱間加工条件は下記の如き内容であ
る。The hot working conditions of Examples 1 to 4 are as follows.
外径６０．５ ｍ、肉厚６． Ｏｗｓの炭素銅鋼管を１
２５０℃に加熱して、４スタンドマンドレスミルによっ
て外径５３．０Ｉ１１％肉厚３．５ Ｍの管に圧延する
とき、マンドレルの速度を、第１スタンドのロール周速
度の８０％に保持し、マンドレルに作用する推力を測定
した。この推力が小さいはど潤（８）
潤滑剤の使用結果
（注）従来品Ａは、黒鉛粉末と鉱物油系エマル−）欝ン
からなる潤滑剤を比
較例として使用した。Outer diameter 60.5 m, wall thickness 6. Ows carbon copper steel pipe 1
When heated to 250°C and rolled into a tube with an outer diameter of 53.0I, 11% and a wall thickness of 3.5M using a 4-stand mandless mill, the mandrel speed was maintained at 80% of the roll peripheral speed of the first stand. , the thrust force acting on the mandrel was measured. This thrust force is small. (8) Results of using lubricant (Note) For conventional product A, a lubricant consisting of graphite powder and mineral oil-based emulsion was used as a comparative example.
（９）(9)
Claims (1)
を混在してなる鋼材の 熱間成形用潤滑剤。 ２ 黒鉛粉末に対し、１〜５０重ｆチのポリアミド樹脂
及び２０１ｉｉ１チ以下の分散・懸濁剤よりなる組成物
を水に懸 濁せしめた鋼材の熱間成形用潤滑剤。[Scope of Claims] 1. A lubricant for hot forming steel materials, which is made by mixing graphite powder with 1 to 50 weight of polyamide resin. 2. A lubricant for hot forming steel materials, which is prepared by suspending graphite powder in water with a composition consisting of a polyamide resin of 1 to 50 weights and a dispersing/suspending agent of 201ii or less.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56118173A JPS5819395A (en) | 1981-07-28 | 1981-07-28 | Lubricant for hot molding of steel stock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56118173A JPS5819395A (en) | 1981-07-28 | 1981-07-28 | Lubricant for hot molding of steel stock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5819395A true JPS5819395A (en) | 1983-02-04 |
Family
ID=14729925
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56118173A Pending JPS5819395A (en) | 1981-07-28 | 1981-07-28 | Lubricant for hot molding of steel stock |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5819395A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5847095A (en) * | 1981-09-17 | 1983-03-18 | Nippon Steel Chem Co Ltd | High-temperature lubricant composition |
| JPS59157189A (en) * | 1983-02-18 | 1984-09-06 | ロンザ・リミテツド | Solid mold reasing lubricating agent |
| FR2753987A1 (en) * | 1996-10-02 | 1998-04-03 | Valeo Systemes Dessuyage | Composition for a coating for windscreen wipers |
| FR2925507A1 (en) * | 2008-04-08 | 2009-06-26 | Valeo Systemes Dessuyage | Preparing coating composition, useful for wiper blade of windshield wiper for motor vehicles, by preparing lubricant dispersion, introducing polymer microparticles in dispersion and contacting microparticle dispersion with resin dispersion |
| JP2017132935A (en) * | 2016-01-29 | 2017-08-03 | 雅義 秋山 | Lubricant for hot processing and hot processing method of metal |
| CN109054960A (en) * | 2018-10-16 | 2018-12-21 | 深圳市金晖科技有限公司 | A kind of friction improver and preparation method thereof containing mesoporous nano carbon |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5610597A (en) * | 1979-07-04 | 1981-02-03 | Nippon Paint Co Ltd | Lubricating film-former for cold wire drawing |
-
1981
- 1981-07-28 JP JP56118173A patent/JPS5819395A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5610597A (en) * | 1979-07-04 | 1981-02-03 | Nippon Paint Co Ltd | Lubricating film-former for cold wire drawing |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5847095A (en) * | 1981-09-17 | 1983-03-18 | Nippon Steel Chem Co Ltd | High-temperature lubricant composition |
| JPS6234357B2 (en) * | 1981-09-17 | 1987-07-27 | Shinnitsutetsu Kagaku Kk | |
| JPS59157189A (en) * | 1983-02-18 | 1984-09-06 | ロンザ・リミテツド | Solid mold reasing lubricating agent |
| JPH0316998B2 (en) * | 1983-02-18 | 1991-03-06 | Lonza Ag | |
| FR2753987A1 (en) * | 1996-10-02 | 1998-04-03 | Valeo Systemes Dessuyage | Composition for a coating for windscreen wipers |
| FR2925507A1 (en) * | 2008-04-08 | 2009-06-26 | Valeo Systemes Dessuyage | Preparing coating composition, useful for wiper blade of windshield wiper for motor vehicles, by preparing lubricant dispersion, introducing polymer microparticles in dispersion and contacting microparticle dispersion with resin dispersion |
| JP2017132935A (en) * | 2016-01-29 | 2017-08-03 | 雅義 秋山 | Lubricant for hot processing and hot processing method of metal |
| CN109054960A (en) * | 2018-10-16 | 2018-12-21 | 深圳市金晖科技有限公司 | A kind of friction improver and preparation method thereof containing mesoporous nano carbon |
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