JPH10121088A - Lubricant composition for high-temperature processing of metal and method for using the same - Google Patents
Lubricant composition for high-temperature processing of metal and method for using the sameInfo
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- JPH10121088A JPH10121088A JP8272288A JP27228896A JPH10121088A JP H10121088 A JPH10121088 A JP H10121088A JP 8272288 A JP8272288 A JP 8272288A JP 27228896 A JP27228896 A JP 27228896A JP H10121088 A JPH10121088 A JP H10121088A
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Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、金属の高温加工用
潤滑剤組成物、特にマンドレルミルによる継目無鋼管圧
延時に用いて好適な金属の高温加工用潤滑剤組成物とそ
の使用方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lubricant composition for high-temperature processing of metals, and more particularly to a lubricant composition for high-temperature processing of metals suitable for use in rolling a seamless steel pipe by a mandrel mill.
【０００２】[0002]
【従来の技術】マンネスマン−マンドレルミル方式によ
る継目無鋼管の製造は、一般に、次のようにして行われ
る。2. Description of the Related Art A seamless steel pipe is generally manufactured by the Mannesmann-mandrel mill method as follows.
【０００３】先ず、回転炉床式などの適宜な加熱炉で加
熱された中実の丸鋼片をピアサーと称される穿孔圧延機
で穿孔圧延して中空のホローシェルに成形する。次い
で、このホローシェルを、その内部に潤滑剤が外周面に
塗布されたマンドレルバーを串刺し状に挿入した状態で
７〜９スタンドからなるマンドレルミルと称される延伸
圧延機に供して１パスで圧延し、所定の外径と肉厚を有
する仕上げ用素管に成形する。そして、圧延後の仕上げ
用素管からマンドレルバーを引き抜き、形状の悪化した
管端部分をホットソーで切断除去した後、再加熱炉に装
入して所定の温度に再加熱し、その表面に生成した酸化
スケールを高圧水でデスケーリングする。しかる後、再
加熱デスケール処理された仕上げ用素管をストレッチレ
デューサーと称される仕上げ圧延機に供して外径圧下と
若干の肉厚圧下を付与して１パスで圧延し、所定の外径
と肉厚を有する製品管に仕上げる。その後、製品管を冷
却床で冷却してからコールドソーにより所要の長さに切
断し、精整ラインに送る。[0003] First, a solid round slab heated in a suitable heating furnace such as a rotary hearth type is pierced and rolled by a piercing mill called a piercer to form a hollow hollow shell. Then, the hollow shell is subjected to a mandrel bar having a lubricant applied to the outer peripheral surface thereof in a skewered manner and inserted into a draw rolling mill called a mandrel mill composed of 7 to 9 stands and rolled in one pass. Then, it is formed into a finishing tube having a predetermined outer diameter and thickness. Then, the mandrel bar is pulled out from the finishing tube after rolling, and the end of the tube whose shape has deteriorated is cut and removed with a hot saw, and then charged into a reheating furnace and reheated to a predetermined temperature to form on the surface thereof. Descale the oxidized scale with high-pressure water. Thereafter, the reheated descaling-treated finishing pipe is subjected to an outer diameter reduction and a slight thickness reduction by being subjected to a finishing rolling mill called a stretch reducer, and is rolled in one pass to obtain a predetermined outer diameter. Finish into a thick product tube. Thereafter, the product tube is cooled on a cooling floor, cut into a required length by a cold saw, and sent to a refining line.
【０００４】上記のマンドレルバーは、通常、温度が１
１００〜１２００℃のホローシェルの内部に挿入され、
ホローシェルと焼付きやすい状態にあるが、その外周面
に塗布された潤滑剤が焼付き防止皮膜として作用する。The above mandrel bar usually has a temperature of one.
Inserted into the hollow shell at 100-1200 ° C,
Although it is in a state of being easily seized with the hollow shell, the lubricant applied to the outer peripheral surface acts as an anti-seizure film.
【０００５】一方、マンドレルミル圧延後の仕上げ用素
管の形状と肉厚は、マンドレルミルのロール回転数、ロ
ール孔型形状の影響を受けるとともに、マンドレルバー
と材料（ホローシェル）間の摩擦係数の影響を受ける。
具体的には、前記の摩擦係数が小さな潤滑剤を使用する
と、材料変形が円周方向と長手方向で均一になり、管軸
長方向で安定した形状と肉厚が得られる。On the other hand, the shape and thickness of the finishing pipe after the mandrel mill is rolled are affected by the number of rolls of the mandrel mill and the shape of the roll hole, and the friction coefficient between the mandrel bar and the material (hollow shell). to be influenced.
Specifically, when a lubricant having a small friction coefficient is used, material deformation becomes uniform in the circumferential direction and the longitudinal direction, and a stable shape and thickness can be obtained in the longitudinal direction of the tube axis.
【０００６】また、マンドレルバーは、延伸圧延後の仕
上げ用素管からバーストリッパーを用いて引き抜かれる
が、マンドレルバーの外面に塗布した潤滑剤の潤滑性が
悪いと、素管とマンドレルバーが焼付いてマンドレルバ
ーが引き抜けない状態となり、マンドレルバーの引き抜
き作業性が損なわれる。The mandrel bar is pulled out from the finishing tube after elongation rolling using a burst ripper. If the lubricating property of the lubricant applied to the outer surface of the mandrel bar is poor, the tube and the mandrel bar are burned. As a result, the mandrel bar cannot be pulled out, and the workability of pulling out the mandrel bar is impaired.
【０００７】このため、マンドレルバーの外周面には、
熱間での潤滑性能に優れた熱間圧延用潤滑剤を塗布する
必要があり、このような潤滑剤としては、安価で非常に
優れた潤滑性能を有するもの、具体的には黒鉛を主成分
とする水溶性潤滑剤（特公昭５９−３７３１７号公報参
照）が最もよく使用されている。For this reason, on the outer peripheral surface of the mandrel bar,
It is necessary to apply a hot rolling lubricant having excellent hot lubrication performance, and such a lubricant is inexpensive and has extremely excellent lubrication performance, specifically graphite as a main component. (See Japanese Patent Publication No. 59-37317) is most often used.
【０００８】しかし、上記の黒鉛を主成分とする水溶性
潤滑剤は、これをマンドレルバーの外周面に塗布し、こ
のマンドレルバーをホローシェル内に挿入してマンドレ
ルミル圧延すると、圧延時に素管内面に浸炭が起こり、
管内表面側に炭素濃度が高い部分が発生する。この高炭
素濃度領域は、その後の再加熱、仕上げ圧延、さらには
圧延後の固溶化熱処理によって炭素が拡散し、炭素濃度
が低くなるとともに広がるものの、依然として炭素濃度
が高い部分が浸炭層として残存する。この浸炭層は、圧
延後の管内面に局部的な異常硬化部を発生させ、切削性
を低下させるとともに、製品の耐食性をも低下させる原
因となる。However, the above-mentioned water-soluble lubricant containing graphite as a main component is applied to the outer peripheral surface of a mandrel bar, and the mandrel bar is inserted into a hollow shell to perform mandrel mill rolling. Carburization occurs in
A portion having a high carbon concentration is generated on the inner surface side of the pipe. In this high carbon concentration region, the carbon is diffused by the subsequent reheating, finish rolling, and further solution heat treatment after rolling, and the carbon concentration decreases and spreads, but the portion where the carbon concentration is still high remains as a carburized layer. . This carburized layer causes a local abnormal hardened portion on the inner surface of the pipe after rolling, thereby reducing the machinability and also reducing the corrosion resistance of the product.
【０００９】従って、製品管の切削性や耐食性を確保す
るためには、圧延された製品管の内表面の浸炭層部分を
研磨などにより除去する工程が必要で生産性の低下を招
き、製品管の製造コストが著しく上昇するなどの問題が
あった。さらに、小径サイズの製品管の場合は、内径が
小さいために研磨用の砥石を管内に挿入することが不可
能な場合があり、事実上製造不能となることもあった。Therefore, in order to ensure the cutability and corrosion resistance of the product pipe, a step of removing the carburized layer portion on the inner surface of the rolled product pipe by polishing or the like is necessary, and the productivity is reduced, and the product pipe is reduced. There has been a problem that the manufacturing cost of the device has increased remarkably. Further, in the case of a product tube having a small diameter, it is sometimes impossible to insert a grinding wheel into the tube due to a small inner diameter, and in some cases, it is practically impossible to manufacture.
【００１０】このような問題点を解決するための潤滑剤
としては、次のようなものが提案されている。The following has been proposed as a lubricant for solving such a problem.
【００１１】例えば、特開平５−１２５３８６号公報に
は、主成分の黒鉛１００重量部に対し、平均粒径が０．
０１〜２０μｍの錫、鉛、亜鉛、カルシウム、銅および
アルミニウムの酸化物粉末を２〜１００重量部添加する
ことによって黒鉛の浸炭性を抑制し、浸炭性を低下させ
た黒鉛系の潤滑剤が提案されている。For example, Japanese Patent Application Laid-Open No. 5-125386 discloses that the average particle size is 0.1 wt.
A graphite-based lubricant in which the carburizability of graphite is suppressed by adding 2 to 100 parts by weight of an oxide powder of tin, lead, zinc, calcium, copper and aluminum having a particle size of 01 to 20 μm and carburizability is reduced is proposed. Have been.
【００１２】また、特開昭６４−１６８９４号公報に
は、マイカに代表される粒子状の酸化物系層状物質と硼
酸系の結合剤とを１：０．１〜０．５の重量比で混合し
てなる非黒鉛系の潤滑剤が提案されている。JP-A-64-16894 discloses that a particulate oxide-based layered material represented by mica and a boric acid-based binder are mixed in a weight ratio of 1: 0.1 to 0.5. Non-graphite-based lubricants obtained by mixing have been proposed.
【００１３】しかし、上記特開平５−１２５３８６号公
報に示される潤滑剤は、主成分が黒鉛であるために、浸
炭を完全には防止できないという欠点を有している。However, the lubricant disclosed in JP-A-5-125386 has a drawback that carburization cannot be completely prevented because the main component is graphite.
【００１４】また、上記特開昭６４−１６８９４号公報
に示される潤滑剤は、固体である主成分の粒子状の酸化
物系層状物質が多すぎるために、これに起因して鋼管表
面に引っ掻き疵が多発しやすく、所望の表面性状を有す
る製品管が圧延のままで常に安定して得られないという
欠点を有している。Further, the lubricant disclosed in Japanese Patent Application Laid-Open No. Sho 64-16894 has too much solid oxide-based layered material as a main component, which causes the surface of the steel pipe to be scratched. There is a drawback that flaws are apt to occur frequently and a product tube having a desired surface property cannot always be stably obtained as rolled.
【００１５】すなわち、炭素鋼などの普通鋼製の鋼管は
勿論、ステンレス鋼や合金鋼などの特殊鋼製の鋼管は、
通常、その表面が美麗であることが要求される。特に、
浸炭が大きな問題となるステンレス鋼や合金鋼などの特
殊鋼製の鋼管は、その用途によっては上記の引っ掻き疵
が軽微であっても不良品とされ、良品とするには研磨す
るなどの手直しが必要で、その分だけ製品の製造コスト
が上昇する。また、引っ掻き疵が深い場合には手直しも
できず、スクラップにされるので材料歩留まりが低下
し、製品の製造コストが上昇する。That is, not only steel pipes made of ordinary steel such as carbon steel but also steel pipes made of special steel such as stainless steel and alloy steel are used.
Usually, the surface is required to be beautiful. Especially,
Depending on the application, special steel pipes such as stainless steel and alloy steel, for which carburization is a major problem, are considered to be defective even if the above scratches are minor. If necessary, the manufacturing cost of the product increases accordingly. In addition, when the scratch is deep, it cannot be repaired, but is scrapped, so that the material yield is reduced and the production cost of the product is increased.
【００１６】そこで、本発明者らは、マイカに代表され
る粒子状の酸化物系層状物質に対する硼酸系に代表され
る結合剤の配合量を多くすることで上記引っ掻き疵が発
生するのを防止するようにした非黒鉛系の潤滑剤を開発
し、先に特許出願（特願平７−２３３６３９号）した。Therefore, the present inventors have prevented the above-mentioned scratches from occurring by increasing the amount of a boric acid-based binder added to a particulate oxide-based layered material represented by mica. A non-graphite-based lubricant was developed, and a patent application (Japanese Patent Application No. 7-233639) was filed earlier.
【００１７】[0017]
【発明が解決しようとする課題】本発明者らが開発し、
先に特許出願した上記の非黒鉛系潤滑剤を用いる場合に
は、ステンレス鋼および合金鋼などの特殊鋼製の鋼管を
マンドレルミルで圧延しても、浸炭は勿論、鋼管表面に
引っ掻き疵が発生することはない。しかし、この非黒鉛
系の潤滑剤は高価で、炭素鋼などの普通鋼製の鋼管を圧
延するのに用いると、経済的に引き合わないものであ
る。SUMMARY OF THE INVENTION The present inventors have developed
In the case of using the above-mentioned non-graphite lubricant applied for a patent earlier, even if a special steel tube such as stainless steel and alloy steel is rolled by a mandrel mill, scratches occur on the surface of the steel tube as well as carburizing. I will not do it. However, this non-graphite-based lubricant is expensive and is not economically viable when used for rolling steel pipes made of ordinary steel such as carbon steel.
【００１８】このため、浸炭がさほど問題にならない炭
素鋼などの普通鋼製の鋼管を圧延する場合には黒鉛系の
潤滑剤を使用し、浸炭が大きな問題になるステンレス鋼
および合金鋼などの特殊鋼製の鋼管を圧延する場合に上
記の非黒鉛系潤滑剤を使用することとしていた。For this reason, when rolling steel pipes made of ordinary steel such as carbon steel where carburization is not a serious problem, a graphite-based lubricant is used, and special steel such as stainless steel and alloy steel where carburization is a major problem is used. When rolling a steel pipe, the above-mentioned non-graphite lubricant is used.
【００１９】ところが、上記のように圧延する鋼管の鋼
種に応じて用いる潤滑剤を変更する場合には、先行圧延
ロットが普通鋼製の鋼管でこれに引き続く後行圧延ロッ
トが特殊鋼製の鋼管であると、後行圧延ロットの特殊鋼
製の鋼管に浸炭が発生するという問題があった。これ
は、先行圧延ロットの普通鋼製鋼管の圧延時に黒鉛系潤
滑剤が塗布されたマンドレルバーの搬送路上に付着した
黒鉛が、非黒鉛系の潤滑剤を塗布したマンドレルバー表
面に付着するからである。However, when the lubricant to be used is changed according to the steel type of the steel pipe to be rolled as described above, the preceding rolling lot is a steel pipe made of ordinary steel, and the subsequent rolling lot is a steel pipe made of special steel. In such a case, there is a problem that carburization occurs in the steel pipe made of special steel of the succeeding rolling lot. This is because the graphite adhering on the conveying path of the mandrel bar coated with graphite lubricant during the rolling of the ordinary steel pipe of the preceding rolling lot adheres to the mandrel bar surface coated with non-graphite lubricant. is there.
【００２０】尤も、後行圧延ロットの特殊鋼製鋼管の圧
延に先だってマンドレルバー搬送路上に付着した黒鉛を
除去すれば上記の問題はなくなる。しかし、そのために
は特別な除去装置をマンドレルバー搬送路に設ける必要
があって設備費が嵩み、製品の製造コスト上昇を招くの
で、採用し難い。However, if the graphite adhering to the mandrel bar conveying path is removed prior to the rolling of the special steel pipe of the succeeding rolling lot, the above-mentioned problem is eliminated. However, for this purpose, it is necessary to provide a special removing device in the mandrel bar transport path, which increases equipment costs and increases production costs of the product, which is difficult to employ.
【００２１】従って、マンドレルバー搬送路上に付着し
た黒鉛がその表面に付着しても浸炭を生じさせることが
なく、かつ引っ掻き疵などの表面欠陥を発生させること
のないいわゆる造管潤滑性に優れた非黒鉛系の金属の高
温加工用潤滑剤組成物の開発が望まれていた。Therefore, even if graphite adhering to the mandrel bar conveyance path adheres to the surface, it does not cause carburization and has excellent so-called pipe-forming lubricity which does not cause surface defects such as scratches. It has been desired to develop a lubricant composition for high-temperature processing of non-graphite-based metals.
【００２２】本発明は、上記の実状に鑑みてなされたも
ので、その課題は、マンドレルバーに塗布後の潤滑剤皮
膜表面に黒鉛が付着した場合にあっても被圧延材の鋼管
に浸炭を生じさせることがなく、かつ造管潤滑性に優れ
た非黒鉛系の金属の高温加工用潤滑剤組成物とその使用
方法を提供することにある。SUMMARY OF THE INVENTION The present invention has been made in view of the above situation, and has as its object to carry out carburizing of a steel pipe of a material to be rolled even when graphite adheres to the surface of a lubricant film after being applied to a mandrel bar. An object of the present invention is to provide a lubricant composition for high-temperature processing of a non-graphite-based metal which does not generate and is excellent in pipe forming lubricity, and a method of using the same.
【００２３】[0023]
【課題を解決するための手段】本発明の要旨は、次の
（１）および（２）の金属の高温加工用潤滑剤組成物と
その使用方法にある。The gist of the present invention resides in the following (1) and (2) lubricant compositions for high-temperature processing of metals and methods of using the same.
【００２４】（１）下記のＡ群のうちから選ばれた１ま
たは２種以上の粒子状の物質５〜３０重量部と、Ｂ群の
うちから選ばれた１または２種以上の物質３０〜９０重
量部と、Ｃ群のうちから選ばれた１または２種以上の粒
子状の物質５〜４０重量部とからなることを特徴とする
金属の高温加工用潤滑剤組成物。(1) 5 to 30 parts by weight of one or more kinds of particulate substances selected from the following Group A and one or more substances 30 to 30 parts by weight selected from the Group B A lubricant composition for high-temperature processing of metals, comprising 90 parts by weight and 5 to 40 parts by weight of one or more kinds of particulate substances selected from Group C.
【００２５】Ａ群：カリウム四珪素マイカ、ナトリウム
四珪素マイカ、天然金マイカ、ベントナイト、モンモリ
ロナイト、バーミキュライト。Group A: potassium tetrasilicon mica, sodium tetrasilicon mica, natural gold mica, bentonite, montmorillonite, vermiculite.
【００２６】Ｂ群：酸化硼素、硼酸、アルカリ金属硼酸
塩、炭酸ナトリウム、炭酸カリウム、融点が１０００℃
以下の珪酸ナトリウムおよび珪酸カリウム。Group B: boron oxide, boric acid, alkali metal borate, sodium carbonate, potassium carbonate, melting point 1000 ° C.
The following sodium and potassium silicates.
【００２７】Ｃ群：平均粒径が０．０１〜２０μｍのチ
タン、マグネシウム、珪素、錫、鉛、亜鉛、カルシウ
ム、銅およびアルミニウムの各酸化物、マグネシウムの
水酸化物。Group C: oxides of titanium, magnesium, silicon, tin, lead, zinc, calcium, copper and aluminum, and magnesium hydroxide having an average particle size of 0.01 to 20 μm.
【００２８】（２）上記（１）の高温加工用潤滑剤組成
物の使用方法であって、水に前記高温加工用潤滑剤組成
物を２０〜８０重量部分散溶解させて用いることを特徴
とする高温加工用潤滑剤組成物の使用方法。(2) A method for using the lubricant composition for high-temperature processing according to the above (1), wherein 20 to 80 parts by weight of the lubricant composition for high-temperature processing is dispersed and dissolved in water. To use high temperature processing lubricant composition.
【００２９】本発明者らは、鋭意実験研究の結果、次の
ことを知見して本発明をなすにいたった。The present inventors have made the present invention based on the following findings as a result of intensive studies.
【００３０】すなわち、本発明者らが開発し、先に特許
出願したマイカに代表される粒子状の酸化物系層状物質
と硼酸系に代表される結合剤とからなる非黒鉛系の潤滑
剤組成物に対し、上記Ｃ群に記載の特定粒度の粒子状物
質を特定量配合すると、その潤滑剤皮膜表面に黒鉛が付
着しても、被圧延材の鋼管に浸炭が生じることがなく、
かつ優れた造管潤滑性を発揮することを見いだした。That is, a non-graphite-based lubricant composition comprising a particulate oxide-based layered material represented by mica and a binder represented by boric acid, which was developed by the present inventors and filed in the patent application earlier When a specific amount of particulate matter having the specific particle size described in the above-mentioned group C is blended with the material, even if graphite adheres to the surface of the lubricant film, carburization does not occur in the steel pipe of the material to be rolled,
It has also been found that it exhibits excellent pipe lubrication.
【００３１】[0031]
【発明の実施の形態】本発明において金属の高温加工用
潤滑剤組成物の基材として使用する物質は、下記Ａ群の
うちから選ばれた１種または２種以上の粒状物質であ
る。BEST MODE FOR CARRYING OUT THE INVENTION In the present invention, a substance used as a base material for a lubricant composition for metal high-temperature processing is one or more granular substances selected from the following Group A.
【００３２】Ａ群：カリウム四珪素マイカ［ＫＭｇ2.5
（Ｓｉ4 Ｏ10）Ｆ2 ］、ナトリウム四珪素マイカ［Ｎａ
Ｍｇ2.5 （Ｓｉ4 Ｏ10）Ｆ2 ］、天然金マイカ［ＫＭｇ
3 （ＡｌＳｉ3 Ｏ10）（ＯＨ）2 ］、ベントナイト［Ｓ
ｉ2 （Ａｌ3.34Ｍｇ0.44）Ｏ20（ＯＨ）4 Ｎａ0.44］、
モンモリロナイト［（Ｎａ，Ｋ，Ｍｇ，Ｃａ）0.33Ａｌ
4 （Ｓｉ7.33Ａｌ0.67）Ｏ20（ＯＨ）4 ・ｎＨ2 Ｏ］お
よびバーミキュライト［（Ｍｇ，Ｆｅ）3 （Ｓｉ，Ａ
ｌ，Ｆｅ）4 Ｏ10（ＯＨ）2 ・４Ｈ2 Ｏ］。Group A: potassium tetrasilicon mica [KMg 2.5
(Si 4 O 10 ) F 2 ], sodium tetrasilicon mica [Na
Mg 2.5 (Si 4 O 10 ) F 2 ], natural gold mica [KMg
3 (AlSi 3 O 10 ) (OH) 2 ], bentonite [S
i 2 (Al 3.34 Mg 0.44) O 20 (OH) 4 Na 0.44],
Montmorillonite [(Na, K, Mg, Ca) 0.33 Al
4 (Si 7.33 Al 0.67 ) O 20 (OH) 4 .nH 2 O] and vermiculite [(Mg, Fe) 3 (Si, A
1, Fe) 4 O 10 (OH) 2 .4H 2 O].
【００３３】これらの物質は、いずれもせん断抵抗の小
さな天然もしくは人工の層状をなす酸化物系の鉱物（以
下、酸化物系層状物質という）であり、その粒状体は、
造管時に、特にホローシェルとマンドレルバーの焼付を
防止する役目を担っている。また、これらの酸化物系層
状物質は、固体潤滑剤として使用した場合、概ね同じよ
うな摩擦挙動を示す。従って、これらを２種以上混合使
用する場合の混合割合は特に制限されない。Each of these substances is a natural or artificial layered oxide mineral having a low shear resistance (hereinafter referred to as an oxide layered substance).
It plays a role in preventing seizure of hollow shells and mandrel bars, especially during pipe making. In addition, when these oxide-based layered materials are used as solid lubricants, they exhibit substantially the same frictional behavior. Therefore, the mixing ratio when two or more of these are mixed and used is not particularly limited.
【００３４】これらの酸化物系層状物質は、平均粒径が
１００μｍ以下、より好ましくは４０μｍ以下で、かつ
純度が８１％以上であることが望ましい。これは、粒径
が１００μｍを超えると水と混合した場合に分散性が悪
くなり、使用時における被潤滑面への供給性が劣るよう
になる。また、その純度が８１％未満では夾雑物として
存在しているアルミナ（Ａｌ2 Ｏ3 ）やシリカ（ＳｉＯ
2 ）などの無機物を主体とする不純物によってその潤滑
性が阻害されるためである。These oxide-based layered materials preferably have an average particle size of 100 μm or less, more preferably 40 μm or less, and a purity of 81% or more. If the particle size exceeds 100 μm, the dispersibility becomes poor when mixed with water, and the supply to the surface to be lubricated during use becomes poor. If the purity is less than 81%, alumina (Al 2 O 3 ) or silica (SiO
This is because the lubricity is impaired by impurities mainly composed of inorganic substances such as 2 ).
【００３５】なお、平均粒径の下限は、特に定める必要
はない。しかし、その平均粒径が余り小さく加工用工具
の表面粗さより小さいと、工具表面の凹部に入り込んだ
ままとなり、加工時における被加工材料と工具の真実の
接触部に供給されなくなるので、１μｍ以上とするのが
好ましい。The lower limit of the average particle size need not be particularly determined. However, if the average particle size is too small and smaller than the surface roughness of the working tool, the tool remains in the recesses on the tool surface and is not supplied to the true contact portion between the work material and the tool at the time of working. It is preferred that
【００３６】また、他の類似の酸化物系層状物質、例え
ば白マイカ［ＫＡｌ2（ＡｌＳｉ3Ｏ10）（ＯＨ）2 ］、
カオリン［Ａｌ2 Ｏ3 ・４ＳｉＯ2 ・Ｈ2 Ｏ］、パイロ
フィライト［Ａｌ2 Ｏ3 ・４ＳｉＯ2 ・Ｈ2 Ｏ］、タル
ク［３ＭｇＯ・４ＳｉＯ2 ・Ｈ2 Ｏ］などを使用した場
合には、本発明で達成されるような黒鉛系潤滑剤に匹敵
する高い潤滑性能を得ることはできない。これは、その
層間結合力が本発明で用いる酸化物系層状物質のそれよ
りも強いためと推定される。Further, other similar oxide-based layered materials such as white mica [KAl 2 (AlSi 3 O 10 ) (OH) 2 ],
When using kaolin [Al 2 O 3 · 4SiO 2 · H 2 O], pyrophyllite [Al 2 O 3 · 4SiO 2 · H 2 O], talc [3MgO · 4SiO 2 · H 2 O], etc. However, it is not possible to obtain high lubrication performance comparable to that of the graphite-based lubricant as achieved by the present invention. This is presumed to be because the interlayer bonding strength is stronger than that of the oxide layered material used in the present invention.
【００３７】上記Ａ群の酸化物系層状物質からなる粒子
のみでは、黒鉛と同様、被潤滑面に強固に付着し難い。
よって、本発明では、結合剤として、低融点結合剤、す
なわち融点が１０００℃以下の下記Ｂ群のうちから選ば
れた物質を混合する必要がある。It is difficult for the particles composed of the oxide-based layered substance of Group A alone to firmly adhere to the surface to be lubricated similarly to graphite.
Therefore, in the present invention, it is necessary to mix a low-melting-point binder, that is, a substance selected from the following group B having a melting point of 1000 ° C. or lower as the binder.
【００３８】Ｂ群：酸化硼素、硼酸、アルカリ金属硼酸
塩、炭酸ナトリウム、炭酸カリウム、珪酸ナトリウムお
よび珪酸カリウム。Group B: boron oxide, boric acid, alkali metal borates, sodium carbonate, potassium carbonate, sodium silicate and potassium silicate.
【００３９】これらの結合剤物質は、高温の加工温度域
で溶融して粘性液体となり、主剤である上記Ａ群の各酸
化物系層状物質粒子を工具および被加工材料の摩擦面に
均一に分散させて強固に付着させるとともに、それ自体
も潤滑皮膜として作用し、優れた造管潤滑性を発揮させ
る一因になる。These binder substances are melted in a high processing temperature range to become a viscous liquid, and the respective particles of the oxide-based layered substance of Group A, which is the main ingredient, are uniformly dispersed on the friction surface of the tool and the material to be processed. And firmly adhere, and itself acts as a lubricating film, which contributes to exhibiting excellent pipe-forming lubricity.
【００４０】すなわち、マンネスマン−マンドレルミル
方式による継目無鋼管の製造においては、前述したよう
に１１００〜１２００℃の中空素管に潤滑剤を塗布した
マンドレルバーを挿入して潤滑する。この時、結合剤は
それ自身溶融して流体潤滑皮膜として作用すると共に、
層状酸化物粒子を摩擦面全体に円滑に供給する作用をす
る。しかし、その融点が１０００℃を超えると熱間加工
の温度域（８００〜１２００℃）で十分に溶融しないた
め、層状酸化物粒子を被摩擦面全体に均一に分散できな
くなって潤滑性が著しく低下する。よって、その融点は
１０００℃以下でなければならない。より好ましくは、
融点が５００〜９００℃の結合剤を用いるのが最適であ
る。That is, in manufacturing a seamless steel pipe by the Mannesmann-mandrel mill method, as described above, a mandrel bar coated with a lubricant is inserted into a hollow shell at 1100 to 1200 ° C. and lubricated. At this time, the binder itself melts and acts as a fluid lubricating film,
It acts to smoothly supply the layered oxide particles to the entire friction surface. However, if the melting point exceeds 1000 ° C., the layer is not sufficiently melted in the hot working temperature range (800 to 1200 ° C.), so that the layered oxide particles cannot be uniformly dispersed on the entire surface to be rubbed, and the lubricity is significantly reduced. I do. Therefore, its melting point must be 1000 ° C. or less. More preferably,
Optimally, a binder having a melting point of 500 to 900 ° C. is used.
【００４１】上記の結合剤として用いる物質は、いずれ
もその純度が８５％以上であることが望ましい。これ
は、その純度が８５％未満であると、アルミナ（Ａｌ2
Ｏ3 ）やシリカ（ＳｉＯ2 ）などの無機物を主体とする
不純物によってその潤滑性が阻害されるためである。It is desirable that all the substances used as the above binder have a purity of 85% or more. This means that if its purity is less than 85%, alumina (Al 2
This is because its lubricity is impaired by impurities mainly composed of inorganic substances such as O 3 ) and silica (SiO 2 ).
【００４２】また、珪酸ナトリウムと珪酸カリウムは、
一般的には表１に示すように、そのモル比によって分類
され、それらの融点は表１示す通りである。従って、本
発明で使用できる珪酸ナトリウムと珪酸カリウムは、Ｎ
ａ2 ＯとＳｉＯ2 のモル比が１：２であるNo. ２と、
１：３であるNo. ３、およびＫ2 ＯとＳｉＯ2 のモル比
が１：１であるNo. ５と、１：３であるNo. ７と、１：
４であるNo. ８である。Further, sodium silicate and potassium silicate are
Generally, as shown in Table 1, they are classified according to their molar ratios, and their melting points are as shown in Table 1. Therefore, sodium silicate and potassium silicate that can be used in the present invention are N 2
No. 2 in which the molar ratio of a 2 O to SiO 2 is 1: 2;
No. 3 which is 1: 3, and No. 5 where the molar ratio of K 2 O to SiO 2 is 1: 1, No. 7 which is 1: 3, and 1:
No. 8 which is No. 4.
【００４３】[0043]
【表１】 [Table 1]
【００４４】一方、炭酸ナトリウムの融点は８４９℃、
炭酸カリウムの融点は８９１℃であり、いずれも１００
０℃以下である。On the other hand, the melting point of sodium carbonate is 849 ° C.
The melting point of potassium carbonate is 891 ° C.
0 ° C. or less.
【００４５】酸化硼素（Ｂ2 Ｏ3 ）の融点は約４５０℃
である。また、硼酸としては、正硼酸（Ｈ3 ＢＯ3 ）、
メタ硼酸（ＨＢＯ2 ）、ピロ硼酸（Ｈ2 Ｂ4 Ｏ7 ）が使
用でき、これらは加熱すると順次水分を失い、３００℃
付近でＢ2 Ｏ3 になる。さらに、アルカリ金属硼酸塩と
しては、硼酸リチウム、硼酸ナトリウム、硼酸カリウ
ム、硼砂（Ｎａ2 Ｂ4 Ｏ7 ・１０Ｈ2 Ｏ）のようなメタ
硼酸塩もしくはピロ硼酸塩が使用でき、これらの融点は
それぞれ８４３℃、９６６℃、９４７℃、８７８℃であ
る。The melting point of boron oxide (B 2 O 3 ) is about 450 ° C.
It is. Further, as boric acid, orthoboric acid (H 3 BO 3 ),
Metaboric acid (HBO 2 ) and pyroboric acid (H 2 B 4 O 7 ) can be used.
It becomes B 2 O 3 in the vicinity. Further, as the alkali metal borate, metaborate or pyroborate such as lithium borate, sodium borate, potassium borate, and borax (Na 2 B 4 O 7 .10H 2 O) can be used. 843 ° C, 966 ° C, 947 ° C, and 878 ° C.
【００４６】結合剤として用いられる上記の各物質の大
きさは、いずれも規制されない。その理由は、使用時に
水に分散混合させた場合、水に溶解するからである。The size of each of the above substances used as a binder is not restricted. The reason is that when dispersed and mixed in water at the time of use, it is dissolved in water.
【００４７】ただし、本発明の潤滑剤組成物を水と混合
することなく使用する場合には、各物質の大きさは、平
均粒径で１００μｍ以下のものを用いるのが他の混合物
との均一分散性を高める点で望ましい。However, when the lubricant composition of the present invention is used without being mixed with water, the size of each substance should be 100 μm or less in average particle size, and it is more uniform with other mixtures. It is desirable in terms of enhancing dispersibility.
【００４８】上記Ａ群とＢ群に記載の物質のみでは、そ
の潤滑皮膜表面に黒鉛が付着した場合、被加工材料に浸
炭が生じるのを防止できない。よって、本発明では、平
均粒径が０．０１〜２０μｍの下記Ｃ群のうちから選ば
れた１種または２種以上の物質を浸炭抑制剤として混合
する必要がある。With only the substances described in the above groups A and B, when graphite adheres to the surface of the lubricating film, it is impossible to prevent carburizing of the material to be processed. Therefore, in the present invention, it is necessary to mix one or more substances selected from the following group C having an average particle size of 0.01 to 20 μm as a carburizing inhibitor.
【００４９】Ｃ群：チタン、マグネシウム、珪素、錫、
鉛、亜鉛、カルシウム、銅およびアルミニウムの酸化
物、並びにマグネシウムの水酸化物。Group C: titanium, magnesium, silicon, tin,
Oxides of lead, zinc, calcium, copper and aluminum, and hydroxides of magnesium.
【００５０】これら特定金属の酸化物およびマグネシウ
ムの水酸化物を混合すると、その潤滑皮膜表面に黒鉛が
付着した場合にあっても被加工材料に浸炭が生じること
がない。これは、その詳細な浸炭防止のメカニズムは不
明であるが、次のメカニズムによるものと推定される。When the oxide of the specific metal and the hydroxide of magnesium are mixed, even if graphite adheres to the surface of the lubricating film, carburizing does not occur in the material to be processed. Although the detailed mechanism of carburization prevention is unknown, it is presumed to be due to the following mechanism.
【００５１】すなわち、マンドレルバーの外周面に形成
された潤滑剤皮膜表面に付着した黒鉛は、高温に加熱さ
れた被加工材料（ホローシェル）と接する造管時に大気
中の酸素と反応してＣＯガスを発生させる。そして、通
常は、このＣＯガスが被加工材料に浸炭を生じさせる原
因になる。しかし、潤滑皮膜中に上記Ｃ群のうちのいず
れか１種以上の金属酸化物または金属水酸化物からなる
物質が存在する場合には、その物質とＣＯガスとの間で
還元反応が生じてＣＯガスのほとんどが浸炭現象に寄与
しないＣＯ2 ガスに変換されるとともに、Ｃ群物質が金
属単体を含む溶融物となり、これが被加工材料の表面に
被着してその表面を被覆し、この被着層が被加工材料へ
の残存ＣＯガスのバリヤー層となって被加工材料の浸炭
が防止されるものと推定される。That is, graphite adhered to the surface of the lubricant film formed on the outer peripheral surface of the mandrel bar reacts with oxygen in the atmosphere at the time of pipe making in contact with the workpiece (hollow shell) heated at a high temperature to cause CO gas. Generate. Usually, this CO gas causes carburization of the material to be processed. However, when a substance consisting of one or more metal oxides or metal hydroxides of the group C exists in the lubricating film, a reduction reaction occurs between the substance and the CO gas to cause a reduction reaction. Most of the CO gas is converted into CO 2 gas which does not contribute to the carburizing phenomenon, and the group C substance becomes a molten material containing a simple metal, which is applied to the surface of the material to be processed and coats the surface. It is presumed that the deposited layer serves as a barrier layer for the residual CO gas on the work material, thereby preventing carburization of the work material.
【００５２】上記Ｃ群の各物質の大きさは、平均粒径が
０．０１〜２０μｍのものでなければならない。これ
は、その平均粒径が０．０１μｍ未満であると、昇温時
に発生ガスとともに揮散もしくは逃散してしまい、上記
の浸炭防止効果が得られなくなり、また、その平均粒径
が２０μｍ超であると、上記の還元反応がほとんど生じ
ず、上記の浸炭防止効果が得られないばかりか、造管潤
滑性をも低下するからである。The size of each substance of the above-mentioned group C must have an average particle diameter of 0.01 to 20 μm. If the average particle size is less than 0.01 μm, it will volatilize or escape together with the generated gas at the time of temperature rise, and the above-described carburizing prevention effect cannot be obtained, and the average particle size is more than 20 μm. This is because the above-mentioned reduction reaction hardly occurs and the above-described effect of preventing carburization cannot be obtained, and also the pipe-forming lubricity decreases.
【００５３】なお、上記Ｃ群の各物質は、浸炭防止効果
の最も発揮される温度範囲がそれぞれ異なる。従って、
これらの物質は、被加工材料（ホローシェル）の温度に
応じて最も適したものを選択使用するのが好ましい。具
体的に例示すれば、上記Ｃ群物質のうち、チタンの酸化
物は、７００〜１２５０℃の広い温度範囲で顕著な浸炭
防止効果を発揮し、汎用性があるのでこれを用いるのが
最も効果的である。また、マグネシウムの酸化物と水酸
化物は８００〜１１００℃の温度範囲で、珪素の酸化物
は８００〜１０００℃の温度範囲で、それぞれ顕著な浸
炭防止効果を発揮する。Each of the substances in the above-mentioned group C has a different temperature range in which the effect of preventing carburization is most exhibited. Therefore,
It is preferable to select and use the most suitable one of these substances according to the temperature of the material to be processed (hollow shell). As a specific example, among the above-mentioned group C substances, titanium oxide exerts a remarkable carburizing prevention effect in a wide temperature range of 700 to 1250 ° C., and since it is versatile, its use is most effective. It is a target. In addition, magnesium oxide and hydroxide exhibit a remarkable carburizing prevention effect in a temperature range of 800 to 1100 ° C., and silicon oxide exhibits a significant carburization prevention effect in a temperature range of 800 to 1000 ° C.
【００５４】上記Ａ、ＢおよびＣ群の各物質は、基材と
してのＡ群物質５〜３０重量部、結合剤としてのＢ群物
質３０〜９０重量部、浸炭抑制剤としてのＣ群物質５〜
４０重量部の範囲内で混合配合する必要がある。その理
由は、以下の通りである。Each of the above-mentioned substances of the groups A, B and C comprises 5 to 30 parts by weight of a group A substance as a base material, 30 to 90 parts by weight of a group B substance as a binder, and a group C substance 5 as a carburizing inhibitor. ~
It is necessary to mix and blend within a range of 40 parts by weight. The reason is as follows.
【００５５】Ａ群物質の配合量が５重量部未満、Ｂ群物
質の配合量が９０重量部超、およびＣ群物質の配合量が
４０重量部超であると、いずれの場合も製管時にマンド
レルバーと被加工材料（ホローシェル）との間で焼付き
が発生する。When the compounding amount of the group A substance is less than 5 parts by weight, the compounding amount of the group B substance is more than 90 parts by weight, and the compounding amount of the group C substance is more than 40 parts by weight, in any case, when producing a tube. Seizure occurs between the mandrel bar and the workpiece (hollow shell).
【００５６】また、Ａ群物質の配合量が３０重量部超お
よびＢ群物質の配合量が５重量部未満であると、いずれ
の場合も十分に低い摩擦係数が得られないために満足す
べき潤滑性能が得られないのみならず、その使用中に層
状状態を破壊されたＡ群物質の粒子が凝集して被加工材
料表面に引っ掻き疵が発生する。If the amount of the group A substance is more than 30 parts by weight and the amount of the group B substance is less than 5 parts by weight, a sufficiently low coefficient of friction cannot be obtained in any case. Not only can lubrication performance not be obtained, but also particles of the group A substance whose layered state has been destroyed during use thereof aggregate and scratches occur on the surface of the material to be processed.
【００５７】さらに、Ｃ群物質の配合量が５重量部未満
であると、本発明の潤滑剤組成物からなる潤滑皮膜上に
黒鉛が付着した場合における浸炭防止効果が得られな
い。Further, if the amount of the group C substance is less than 5 parts by weight, the effect of preventing carburization when graphite adheres to the lubricating film made of the lubricant composition of the present invention cannot be obtained.
【００５８】このようにして調合された本発明の潤滑剤
組成物は、水分散液として使用することが作業性などの
面から好ましい。The lubricant composition of the present invention thus prepared is preferably used as an aqueous dispersion from the viewpoint of workability and the like.
【００５９】水に分散混合して用いる場合、水１００重
量部に対して本発明の潤滑剤組成物を２０〜８０重量部
分散溶解させて使用する。これは、潤滑剤組成物が２０
重量部未満であると潤滑剤組成物の安定性が劣り、潤滑
剤組成物が早期に沈降してしまう。逆に、潤滑剤組成物
が８０重量部を超えると常温での粘度が増し、マンドレ
ルバーなどの工具表面に対して潤滑剤を均一に塗布でき
なくなるためである。In the case of dispersing and mixing in water, 20 to 80 parts by weight of the lubricant composition of the present invention is dispersed and dissolved in 100 parts by weight of water. This is because the lubricant composition has 20
If the amount is less than parts by weight, the stability of the lubricant composition will be poor, and the lubricant composition will settle early. Conversely, if the lubricant composition exceeds 80 parts by weight, the viscosity at room temperature increases, and the lubricant cannot be uniformly applied to the surface of a tool such as a mandrel bar.
【００６０】水に分散混合してスプレーまたはその他適
宜な方法によってマンドレルバーなどの工具表面に塗布
された潤滑剤組成物は、乾燥固化された後、製管作業な
どの熱間加工に供される。The lubricant composition, which is dispersed and mixed in water and applied to the surface of a tool such as a mandrel bar by spraying or other appropriate method, is dried and solidified, and then subjected to hot working such as pipe making. .
【００６１】[0061]
【実施例】表２に示す６種類のステンレス鋼製で、外径
１８１．０ｍｍ、肉厚１６．０ｍｍ、長さ７０００ｍｍ
の温度が１１００℃のホローシェルを対象に、７スタン
ドからなるマンドレルミルを用いて外径１５１．０ｍ
ｍ、肉厚５．０ｍｍ、長さ２５３００ｍｍの仕上げ圧延
用素管に延伸圧延するに当たり、次の条件で圧延を行っ
た。EXAMPLES Six types of stainless steel shown in Table 2 were used. The outer diameter was 181.0 mm, the wall thickness was 16.0 mm, and the length was 7000 mm.
For a hollow shell having a temperature of 1100 ° C., an outer diameter of 151.0 m using a mandrel mill composed of 7 stands.
For elongation rolling to a finish rolling tube of m, thickness of 5.0 mm and length of 25300 mm, rolling was performed under the following conditions.
【００６２】[0062]
【表２】 [Table 2]
【００６３】先ず、マンドレルバーとしては、ＳＫＤ６
１製で、外径が１４０．５ｍｍ、有効部長さが１８ｍの
ものを準備する一方、潤滑剤組成物としては、表３〜表
５に示す２４種類のものを調合準備した。なお、潤滑組
成物を構成するＡ群物質は、いずれも平均粒径が３０μ
ｍのものを用いた。First, as a mandrel bar, SKD6
A single lubricant having an outer diameter of 140.5 mm and an effective portion length of 18 m was prepared, while 24 types of lubricant compositions shown in Tables 3 to 5 were prepared. In addition, the average particle diameter of each of the Group A substances constituting the lubricating composition is 30 μm.
m.
【００６４】[0064]
【表３】 [Table 3]
【００６５】[0065]
【表４】 [Table 4]
【００６６】[0066]
【表５】 [Table 5]
【００６７】次いで、これらの潤滑剤組成物を、水１０
０重量部に対して５０重量部分散溶解させ、これを刷毛
を用いて室温状態の上記マンドレルバーの外周面に塗布
した後に室温下で乾燥固化させ、マンドレルバー表面に
膜厚１００μｍのほぼ均一な潤滑皮膜を形成させた。Next, these lubricant compositions were added to water 10
Disperse and dissolve 50 parts by weight with respect to 0 parts by weight, apply this to the outer peripheral surface of the above mandrel bar at room temperature using a brush, and then dry and solidify it at room temperature to form a substantially uniform film having a thickness of 100 μm on the surface of the mandrel bar. A lubricating film was formed.
【００６８】しかる後、この潤滑皮膜を形成させたマン
ドレルバーを、チタン酸化物粒子などの浸炭防止用物質
（上記Ｃ群物質）が配合されない黒鉛系潤滑剤を塗布し
たマンドレルバーを搬送した後のマンドレルバー搬送路
に通して上記の圧延に供した。Thereafter, the mandrel bar on which the lubricating film was formed was transferred to a mandrel bar coated with a graphite-based lubricant to which a carburizing prevention substance such as titanium oxide particles (the above-mentioned group C substance) was not added. It passed through the mandrel bar conveyance path and was subjected to the above-mentioned rolling.
【００６９】そして、マンドレルミル圧延時における摩
擦係数、圧延後の仕上げ用素管表面の引っ掻き疵と焼付
き疵の発生状況および内表面層の浸炭状況とその浸炭深
さを、それぞれ次に述べる方法によって調べた。The friction coefficient during mandrel mill rolling, the state of occurrence of scratches and seizures on the surface of the finishing pipe after rolling, the state of carburization of the inner surface layer, and the carburization depth thereof are described below. Investigated by.
【００７０】摩擦係数：マンドレルミル圧延中、全スタ
ンドに荷重がかかった定常状態の合計荷重ΣＰｉとマン
ドレルバーに働くスラスト力Ｆとを測定し、式「摩擦係
数＝Ｆ／ΣＰｉ」によって求めた。Coefficient of friction: During the mandrel mill rolling, the total load ΔPi in a steady state in which a load was applied to all the stands and the thrust force F acting on the mandrel bar were measured, and were obtained by the equation “friction coefficient = F / ΔPi”.
【００７１】引っ掻き疵と焼付き疵の発生状況：一方管
端に照明灯を配置して他方管端から管内面を目視観察し
する操作を両管端について行い、引っ掻き疵または焼付
き疵の合計長さが０．１ｍ未満であった場合を「○」、
０．１ｍ以上１ｍ未満であった場合を「△」、１ｍ以上
であった場合を「×」として評価した。Occurrence of scratches and seizures: An operation of arranging an illuminator at one end of the tube and visually observing the inner surface of the tube from the other end was performed for both ends of the tube. If the length is less than 0.1m, "○",
The case of 0.1 m or more and less than 1 m was evaluated as “Δ”, and the case of 1 m or more was evaluated as “x”.
【００７２】浸炭発生状況と浸炭深さ：圧延後の仕上げ
用素管の管軸長方向の中央部より試験片を採取し、管内
表面より所定の厚さピッチで成分分析試料を研磨除去
し、その成分分析試料の平均炭素濃度を化学分析すると
いう操作を繰り返して肉厚方向の炭素濃度を調べた。Carburizing occurrence state and carburizing depth: A test piece was sampled from the central part in the longitudinal direction of the tube for finishing after rolling, and a component analysis sample was polished and removed from the inner surface of the tube at a predetermined pitch. The operation of chemically analyzing the average carbon concentration of the component analysis sample was repeated to check the carbon concentration in the thickness direction.
【００７３】そして、各供試鋼のＣ含有量を超える炭素
濃度の管内表面からの深さを求め、この深さを浸炭深さ
として評価した。なお、いずれの成分分析試料の平均炭
素濃度も各供試鋼のＣ含有量を超えなかったものについ
ては、浸炭深さを０（ゼロ）として評価した。Then, the depth from the inner surface of the pipe having a carbon concentration exceeding the C content of each test steel was determined, and this depth was evaluated as the carburizing depth. In addition, when the average carbon concentration of any component analysis sample did not exceed the C content of each test steel, the carburization depth was evaluated as 0 (zero).
【００７４】これらの結果を、表４および表５に併記し
て示した。The results are shown in Tables 4 and 5.
【００７５】表３〜表５に示す結果から明らかなよう
に、本発明例（No. １〜１２）の潤滑剤組成物を用いた
場合には、いずれも良好な結果が得られた。As is evident from the results shown in Tables 3 to 5, good results were obtained in all cases when the lubricant compositions of the present invention examples (Nos. 1 to 12) were used.
【００７６】これに対し、比較例（No. １３〜２４）の
潤滑剤組成物を用いた場合には、いずれの潤滑剤組成物
も多量の引っ掻き疵と焼付き疵または浸炭のいずれか発
生した。On the other hand, when the lubricant compositions of Comparative Examples (Nos. 13 to 24) were used, each of the lubricant compositions produced a large amount of scratches, seizure scratches, or carburization. .
【００７７】すなわち、比較例のNo. １３は、本発明で
規定するＡ群物質の配合量が多すぎ、かつＣ群物質の配
合量が少ないために摩擦係数は低いものの、Ａ群物質起
因の引っ掻き疵が多量に発生し、かつ浸炭も発生した。
比較例のNo. １４は、Ａ群物質の配合量が少ないために
摩擦係数が高く、焼付が多量に発生した。比較例のNo.
１５は、Ｃ群物質の配合量が多すぎるために摩擦係数が
高く、焼付き疵とＣ群物質起因の引っ掻き疵の両方が多
量に発生した。比較例のNo. １６〜１９は、Ａ群物質が
本発明で規定する以外の物質であるために摩擦係数が高
く、焼付き疵と引っ掻き疵の両方が多量に発生した。比
較例のNo. ２０〜２２は、Ｂ群物質が本発明で規定する
以外の融点の高い物質であるためにその圧延使用中にＡ
群物質が凝集し、焼付き疵と引っ掻き疵の両方が多量に
発生した。比較例のNo. ２３は、Ｃ群物質の粒径が小さ
すぎるために浸炭が発生した。比較例のNo. ２４は、Ｃ
群物質の粒径が大きすぎるために、浸炭が発生する一
方、このＣ群物質起因の焼付き疵と引っ掻き疵の両方が
多量に発生した。That is, in Comparative Example No. 13, the friction coefficient was low because the amount of the group A substance specified in the present invention was too large and the amount of the group C substance was too small. A large amount of scratches occurred and carburization also occurred.
In Comparative Example No. 14, the coefficient of friction was high due to the small amount of the Group A substance, and a large amount of seizure occurred. No. of Comparative Example
In No. 15, the coefficient of friction was high because the amount of the C group substance was too large, and both seizure flaws and scratches caused by the C group substances were generated in large amounts. In Comparative Examples Nos. 16 to 19, since the Group A substance was a substance other than those specified in the present invention, the friction coefficient was high, and both seizure flaws and scratches were generated in large amounts. Nos. 20 to 22 of the comparative examples show that the group B material is a material having a high melting point other than that specified in the present invention, so that A
The group substances aggregated, and both seizure flaws and scratches were generated in large quantities. In No. 23 of the comparative example, carburization occurred because the particle size of the group C substance was too small. No. 24 of the comparative example is C
Since the particle diameter of the group material was too large, carburization occurred, while both seizure flaws and scratches caused by the group C substances were generated in large amounts.
【００７８】なお、データの記載は省略するが、Ａ群物
質の平均粒径が１００μｍ超の潤滑剤組成物、および本
発明の潤滑組成物を水１００重量部に対して分散溶解量
させたものでは、前者のものは水に分散混合する際に沈
殿が生じ、また後者のものは粘度が高すぎ、いずれもマ
ンドレルバーへの塗布が不可能であった。Although description of the data is omitted, a lubricant composition in which the average particle size of Group A substance exceeds 100 μm and a lubricant composition of the present invention dispersed and dissolved in 100 parts by weight of water In the case of the former, precipitation occurred when the former was dispersed and mixed in water, and the latter had too high a viscosity and could not be applied to a mandrel bar.
【００７９】[0079]
【発明の効果】本発明の高温加工用潤滑剤組成物は、黒
鉛系潤滑剤組成物の使用に引き続いて用いても、被加工
材料に浸炭を発生させることがないのみならず、引っ掻
き疵や焼付き疵を発生させることがない。従って、表面
品質の優れた製品が得られる。また、浸炭層や疵除去の
ための工程が不要であるので、その分だけ製品の製造コ
ストの低減が図れる。The lubricating composition for high-temperature processing of the present invention does not cause carburization of the material to be processed, but also causes scratches and scratches, even when used subsequently to the use of the graphite-based lubricant composition. There is no generation of seizure flaws. Therefore, a product having excellent surface quality can be obtained. In addition, since a process for removing the carburized layer and the flaws is not required, the manufacturing cost of the product can be reduced accordingly.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 ＦＩ Ｃ１０Ｍ 103:06） Ｃ１０Ｎ 10:02 10:04 10:06 10:08 20:06 30:08 40:24 50:02 ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 6 Identification code FI C10M 103: 06) C10N 10:02 10:04 10:06 10:08 20:06 30:08 40:24 50:02
Claims (2)
種以上の粒子状の物質５〜３０重量部と、Ｂ群のうちか
ら選ばれた１または２種以上の物質３０〜９０重量部
と、Ｃ群のうちから選ばれた１または２種以上の粒子状
の物質５〜４０重量部とからなることを特徴とする金属
の高温加工用潤滑剤組成物。 Ａ群：カリウム四珪素マイカ、ナトリウム四珪素マイ
カ、天然金マイカ、ベントナイト、モンモリロナイト、
バーミキュライト。 Ｂ群：酸化硼素、硼酸、アルカリ金属硼酸塩、炭酸ナト
リウム、炭酸カリウム、融点が１０００℃以下の珪酸ナ
トリウムおよび珪酸カリウム。 Ｃ群：平均粒径が０．０１〜２０μｍのチタン、マグネ
シウム、珪素、錫、鉛、亜鉛、カルシウム、銅およびア
ルミニウムの各酸化物、マグネシウムの水酸化物。1 or 2 selected from the following group A:
5 to 30 parts by weight of one or more kinds of particulate substances, 30 to 90 parts by weight of one or more kinds of substances selected from group B, and one or more kinds of two or more kinds selected from group C A lubricant composition for metal high-temperature processing, comprising 5 to 40 parts by weight of a particulate substance. Group A: potassium tetrasilicon mica, sodium tetrasilicon mica, natural gold mica, bentonite, montmorillonite,
Vermiculite. Group B: boron oxide, boric acid, alkali metal borate, sodium carbonate, potassium carbonate, sodium silicate and potassium silicate having a melting point of 1000 ° C. or less. Group C: oxides of titanium, magnesium, silicon, tin, lead, zinc, calcium, copper and aluminum, and hydroxides of magnesium having an average particle size of 0.01 to 20 μm.
の使用方法であって、水に前記高温加工用潤滑剤組成物
を２０〜８０重量部分散溶解させて用いることを特徴と
する高温加工用潤滑剤組成物の使用方法。2. A method for using the lubricant composition for high-temperature processing according to claim 1, wherein the lubricant composition for high-temperature processing is dispersed and dissolved in water in an amount of 20 to 80 parts by weight. To use high temperature processing lubricant composition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8272288A JPH10121088A (en) | 1996-10-15 | 1996-10-15 | Lubricant composition for high-temperature processing of metal and method for using the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8272288A JPH10121088A (en) | 1996-10-15 | 1996-10-15 | Lubricant composition for high-temperature processing of metal and method for using the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH10121088A true JPH10121088A (en) | 1998-05-12 |
Family
ID=17511777
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8272288A Pending JPH10121088A (en) | 1996-10-15 | 1996-10-15 | Lubricant composition for high-temperature processing of metal and method for using the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH10121088A (en) |
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|---|---|---|---|---|
| WO2007116653A1 (en) * | 2006-03-27 | 2007-10-18 | Sumitomo Metal Industries, Ltd. | Lubricant for hot plastic working and powder lubricant composition for hot working |
| JP2009287023A (en) * | 2003-09-04 | 2009-12-10 | Sumitomo Metal Ind Ltd | Lubricant composition for processing seamless steel pipe |
| JP2011246684A (en) * | 2010-05-25 | 2011-12-08 | Nippon Parkerizing Co Ltd | Aqueous lubricant for plastic working of metallic material, having hardly crystallizable property, and excellent in hygroscopic resistance, corrosion resistance and workability, and metallic material having lubricating film thereof formed thereon |
| WO2012029108A1 (en) * | 2010-08-30 | 2012-03-08 | 株式会社ニレコ | Lubricant for dies |
| CN102753666A (en) * | 2010-02-15 | 2012-10-24 | 住友金属工业株式会社 | Lubricant for hot-rolling tools, and method for surface treatment of mandrel bar for use in producing seamless pipe by hot rolling |
| CN105563631A (en) * | 2015-12-21 | 2016-05-11 | 嘉善美节陶瓷科技有限公司 | Demolding material for artificial stone and application method of demolding material |
-
1996
- 1996-10-15 JP JP8272288A patent/JPH10121088A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009287023A (en) * | 2003-09-04 | 2009-12-10 | Sumitomo Metal Ind Ltd | Lubricant composition for processing seamless steel pipe |
| WO2007116653A1 (en) * | 2006-03-27 | 2007-10-18 | Sumitomo Metal Industries, Ltd. | Lubricant for hot plastic working and powder lubricant composition for hot working |
| US8082767B2 (en) | 2006-03-27 | 2011-12-27 | Sumitomo Metal Industries, Ltd. | Lubricant for hot metal working and powder lubricant composition for hot metal working |
| JP4885948B2 (en) * | 2006-03-27 | 2012-02-29 | 住友金属工業株式会社 | Lubricant for hot plastic working and hot powder lubricant composition |
| CN102753666A (en) * | 2010-02-15 | 2012-10-24 | 住友金属工业株式会社 | Lubricant for hot-rolling tools, and method for surface treatment of mandrel bar for use in producing seamless pipe by hot rolling |
| US8656748B2 (en) | 2010-02-15 | 2014-02-25 | Nippon Steel & Sumitomo Metal Corporation | Lubricant for hot-rolling tools, and surface treatment method for mandrel bar for use in producing hot rolling seamless tubes |
| JP2011246684A (en) * | 2010-05-25 | 2011-12-08 | Nippon Parkerizing Co Ltd | Aqueous lubricant for plastic working of metallic material, having hardly crystallizable property, and excellent in hygroscopic resistance, corrosion resistance and workability, and metallic material having lubricating film thereof formed thereon |
| WO2012029108A1 (en) * | 2010-08-30 | 2012-03-08 | 株式会社ニレコ | Lubricant for dies |
| JPWO2012029108A1 (en) * | 2010-08-30 | 2013-10-28 | 株式会社ニレコ | Mold lubricant |
| CN105563631A (en) * | 2015-12-21 | 2016-05-11 | 嘉善美节陶瓷科技有限公司 | Demolding material for artificial stone and application method of demolding material |
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