JP2005343948A - Hot lubricant composition and its supply method - Google Patents
Hot lubricant composition and its supply method Download PDFInfo
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Description
本発明は、鋼材或いは鋼帯を高圧下圧延する際使用する熱間潤滑剤組成物に関する。さらに詳しくは、鋼材又は鋼帯が圧延ロール噛込時には摩擦係数が高く、圧延中は摩擦係数が低い特性を有する潤滑剤を提供することを目的とする。 The present invention relates to a hot lubricant composition used when rolling a steel material or a steel strip under high pressure. More specifically, an object of the present invention is to provide a lubricant having a characteristic that a steel material or a steel strip has a high friction coefficient when the rolling roll is caught and has a low friction coefficient during rolling.
鋼材、鋼帯などを熱間圧延、熱間鍛造、熱間プレス加工など塑性加工する際、圧延ロール、金型など工具を保護する為に熱間潤滑剤が使用されており、その効果が認められている。従来, 熱間圧延に適用されている耐焼付性が優れる熱間圧延潤滑剤の摩擦係数は殆どが0.15以下である為、高圧下熱間圧延特に熱間大歪圧延加工に使用する場合には、圧延ロール噛込み時、スリップして噛込まず、適用出来ないという大きな問題がある。さらに耐焼付性が従来の熱間圧延より数倍必要であり、従来の熱間圧延潤滑剤では摩擦係数が低くすぎ、また耐焼付性が不足し適用出来ない。 When plastic working such as hot rolling, hot forging, hot pressing, etc. on steel materials and steel strips, hot lubricant is used to protect tools such as rolling rolls and dies, and the effect is recognized. It has been. Conventionally, the friction coefficient of hot rolling lubricants with excellent seizure resistance applied to hot rolling is almost 0.15 or less, so when used for hot rolling under high pressure, especially hot large strain rolling. When the rolling roll is bitten, there is a big problem that it cannot be applied because it slips and bites. Furthermore, seizure resistance is required several times that of conventional hot rolling, and the conventional hot rolling lubricant has a coefficient of friction that is too low, and the seizure resistance is insufficient so that it cannot be applied.
高圧下熱間圧延、特に熱間大歪圧延加工を可能にさせる為には、先ず噛み込むことが必要であり、圧延ロール噛み込み時には水と同等以上の高摩擦係数を示し、噛み込み後の圧延中は圧延負荷軽減の為に低摩擦係数を示す潤滑剤が必要不可欠である。本発明が解決しようとする課題は、噛み込み時には高摩擦係数を示し、且つ圧延中には低摩擦係数を示し、更に加えて耐焼付き性に優れる潤滑剤を提供することにある。 In order to enable hot rolling under high pressure, especially hot large strain rolling, it is necessary to first bite. When biting a rolling roll, it shows a high friction coefficient equal to or higher than that of water. During rolling, a lubricant showing a low coefficient of friction is indispensable for reducing the rolling load. The problem to be solved by the present invention is to provide a lubricant that exhibits a high coefficient of friction during biting, exhibits a low coefficient of friction during rolling, and is excellent in seizure resistance.
本発明者は上記課題を解決する為鋭意研究を行った結果、融点を有する化合物を含む１種又は２種以上の固体潤滑剤及び（又は）無機化合物５〜７0重量部を、界面活性剤０．２〜５．０重量部と水溶性高分子化合物３〜７0重量部を用いて水に安定分散させた組成物が、所期の潤滑剤として使用出来ることを見出し、その優れた効果を確認した。即ち熱間圧延でのロール温度は入側〜出側で１００〜７００℃程度になる為、入側手前のロールにこの潤滑剤を塗布し安定付着させた時は固体状皮膜で高摩擦係数を示し、潤滑皮膜の融点を１３０〜７００℃にすることで温度上昇するロールバイト内では流体状になり、摩擦係数を低下させることが出来、所期の目的に合致する潤滑剤を開発した。 As a result of intensive studies to solve the above problems, the present inventor has found that one or more solid lubricants and / or 5 to 70 parts by weight of an inorganic compound containing a compound having a melting point is added to a surfactant 0. The composition that was stably dispersed in water using 2 to 5.0 parts by weight and 3 to 70 parts by weight of the water-soluble polymer compound was found to be usable as a desired lubricant, and its excellent effect was confirmed. did. That is, since the roll temperature in hot rolling is about 100 to 700 ° C. on the entry side to the exit side, when this lubricant is applied and stably adhered to the roll on the front side of the entry side, a high friction coefficient is obtained with a solid film. As shown in the figure, a lubricant that meets the intended purpose has been developed.
本発明に使用する固体潤滑剤及び（又は）無機化合物は、融点１３０〜７００℃の化合物が好ましく、たとえばステアリン酸亜鉛、ステアリン酸カルシウム、四フッ化エチレン、セルロース、水酸化リチウム、酸化ホウ素、ホウ酸、塩化鉄、塩化リチウム、臭化リチウム、水酸化バリウム、炭酸リチウム、モリブデン酸ソーダ、タングステン酸ソーダ、トリポリリン酸カリウム、トリポリリン酸ソーダ等が挙げられる。これらは１種単独又は２種以上併用することが出来る。またより融点の高い水ガラス（ケイ酸ソーダ）、メタホウ酸ソーダ、メタホウ酸カリウム、タルク、炭酸ソーダ、炭酸カリウム、酸化カルシウム、炭酸カルシウム、酸化ビスマス、二硫化モリブデン等を固体潤滑剤の耐焼付き性向上のために使用することも出来る。 The solid lubricant and / or inorganic compound used in the present invention is preferably a compound having a melting point of 130 to 700 ° C., for example, zinc stearate, calcium stearate, ethylene tetrafluoride, cellulose, lithium hydroxide, boron oxide, boric acid. Iron chloride, lithium chloride, lithium bromide, barium hydroxide, lithium carbonate, sodium molybdate, sodium tungstate, potassium tripolyphosphate, sodium tripolyphosphate, and the like. These can be used alone or in combination of two or more. In addition, seizure resistance of solid lubricants such as water glass (sodium silicate) with higher melting point, sodium metaborate, potassium metaborate, talc, sodium carbonate, potassium carbonate, calcium oxide, calcium carbonate, bismuth oxide, molybdenum disulfide, etc. It can also be used for improvement.
本発明に於いて使用される界面活性剤としては、ノニオン系界面活性剤、アニオン系界面活性剤、カチオン系界面活性剤及び両性界面活性剤のいずれかを使用することが出来る。 As the surfactant used in the present invention, any of nonionic surfactants, anionic surfactants, cationic surfactants and amphoteric surfactants can be used.
ノニオン系界面活性剤の例としては、ＨＬＢ１２以上のノニルフェノールＥＯ（エチレンオキサイド）付加物、ラウリン酸ＥＯ付加物、オレイン酸ＥＯ付加物等が挙げられ、アニオン系界面活性剤の例としては、ジエチルヘキシルスルホコハク酸ソーダ、アルキルベンゼンスルホン酸ソーダ等のスルホン酸塩やラウリン酸ナトリウム等のカルボン酸塩が挙げられる。 Examples of nonionic surfactants include nonylphenol EO (ethylene oxide) adducts of HLB 12 or higher, lauric acid EO adducts, oleic acid EO adducts, etc. Examples of anionic surfactants include diethylhexyl. Examples thereof include sulfonates such as sodium sulfosuccinate and sodium alkylbenzene sulfonate, and carboxylates such as sodium laurate.
またカチオン系界面活性剤としては、ラウリルトリメチルアンモニウムクロライド等の第４級アンモニウム塩が挙げられ、両性界面活性剤としてはラウリルアミノプロピオン酸ナトリウム、ラウリルジヒドロキシエチルベタイン等が挙げられる。 Examples of cationic surfactants include quaternary ammonium salts such as lauryltrimethylammonium chloride, and examples of amphoteric surfactants include sodium laurylaminopropionate and lauryldihydroxyethylbetaine.
本発明に於いて使用される水溶性高分子化合物としては水に安定して溶解或いは分散するものであれば適用出来、その効果は固体潤滑剤及び（又は）無機化合物の水への安定分散性を高め、ロールへの付着性向上に絶大な効果を示す。 The water-soluble polymer compound used in the present invention can be applied as long as it is stably dissolved or dispersed in water, and the effect thereof is the stable dispersibility of the solid lubricant and / or inorganic compound in water. And has a tremendous effect on improving adhesion to rolls.
水溶性高分子化合物の例としてはイソブチレン−マレイン酸共重合物のナトリウム塩（又は）アンモニウム塩、ポリアクリル酸のナトリウム塩及び（又は）アンモニウム塩、セルロース、カルボキシメチルセルロースのナトリウム塩、アルギン酸ナトリウム、ポリアルキレングリコール、ポリビニルアルコール、及びポリエチレンイミン等が挙げられる。 Examples of water-soluble polymer compounds include sodium salt (or) ammonium salt of isobutylene-maleic acid copolymer, sodium salt and / or ammonium salt of polyacrylic acid, cellulose, sodium salt of carboxymethyl cellulose, sodium alginate, poly Examples include alkylene glycol, polyvinyl alcohol, and polyethyleneimine.
本発明に於いては固体潤滑剤の種類と添加量により最適な界面活性剤の種類と量、水溶性高分子化合物の種類と量を適宜選択出来るが、通常固体潤滑剤５〜７０重量部に対して界面活性剤を０．２〜５．０重量部及び水溶性高分子化合物３〜７０重量部を使用することが好ましい。特にジエチルヘキシルスルホコハク酸ソーダの様なアニオン系界面活性剤は固体潤滑剤の分散性が良好であるだけでなく、水の摩擦係数とほぼ同等で固体潤滑剤の摩擦係数に与える影響が少ない為、本発明に於いてはより効果的である。また、特にポリアルキルマレイン酸ナトリウムの様なナトリウム塩やアンモニウム塩を持つ水溶性高分子化合物は固体潤滑剤或いは無機化合物の分散性が良好で、安定した分散液を調製出来、ロールへのスプレー性及び付着性を格段に高め、固体潤滑剤及び（或いは）無機化合物の効果を発揮させ、所期の目的を達成出来る。 In the present invention, the optimum type and amount of the surfactant and the type and amount of the water-soluble polymer compound can be appropriately selected depending on the type and addition amount of the solid lubricant. On the other hand, it is preferable to use 0.2 to 5.0 parts by weight of the surfactant and 3 to 70 parts by weight of the water-soluble polymer compound. In particular, anionic surfactants such as diethyl hexyl sulfosuccinate have not only good dispersibility of the solid lubricant, but also have almost the same coefficient of friction as water and have little effect on the coefficient of friction of the solid lubricant. It is more effective in the present invention. In particular, water-soluble polymer compounds with sodium or ammonium salts such as sodium polyalkylmaleate have good dispersibility of solid lubricants or inorganic compounds, and can be used to prepare stable dispersions and sprayability to rolls. In addition, the adhesion can be remarkably improved, the effects of the solid lubricant and / or the inorganic compound can be exhibited, and the intended purpose can be achieved.
潤滑剤の適用方法としては従来の熱間圧延油塗布と同様に、潤滑剤を高圧スプレー塗布によりロールに付着させ、ロールと被圧延材の潤滑部に供給する方法が例示出来る。又ローラー、ハケ等により直接ロール又は被圧延材への供給塗付も適宜併用出来る。 As a method of applying the lubricant, a method of attaching the lubricant to the roll by high-pressure spray coating and supplying the lubricant to the lubrication portion of the material to be rolled can be exemplified as in the conventional hot rolling oil coating. In addition, supply coating to a roll or a material to be rolled can be appropriately used in combination with a roller, a brush or the like.
本発明の潤滑剤組成物は通常固体潤滑剤及び（又は）無機化合物５〜７０重量部好ましくは１０〜５０重量部、界面活性剤０．２〜５．０重量部好ましくは１．０〜３．０重量部、水溶性高分子化合物３〜７０重量部好ましくは８〜５０重量部及び水１０〜９０重量部好ましくは２０〜８０重量部を主成分として成るものである。 The lubricant composition of the present invention is usually a solid lubricant and / or an inorganic compound in an amount of 5 to 70 parts by weight, preferably 10 to 50 parts by weight, and a surfactant of 0.2 to 5.0 parts by weight, preferably 1.0 to 3 parts. The main components are 0.0 part by weight, 3 to 70 parts by weight, preferably 8 to 50 parts by weight of water-soluble polymer compound, and 10 to 90 parts by weight, preferably 20 to 80 parts by weight of water.
この際固体潤滑剤或いは無機化合物が５重量部未満の場合は 摩擦係数及び耐焼付き性への効果小さい傾向があり、また逆に７０重量部より多くなると経済的に不利であり、且つ、安定塗布が難しくなる場合がある。 At this time, if the amount of the solid lubricant or inorganic compound is less than 5 parts by weight, the effect on the friction coefficient and seizure resistance tends to be small, and conversely if it exceeds 70 parts by weight, it is economically disadvantageous and stable coating. May be difficult.
また界面活性剤が０．２重量部に達しないと固体潤滑剤及び無機化合物の水分散性が悪くなり安定な液状コロイドが出来なくなり、逆に５．０重量部より多くなると経済的に不利であり、摩擦係数への影響が出る傾向がある。 If the surfactant does not reach 0.2 parts by weight, the water dispersibility of the solid lubricant and the inorganic compound is deteriorated and a stable liquid colloid cannot be formed. Conversely, if it exceeds 5.0 parts by weight, it is economically disadvantageous. There is a tendency to affect the coefficient of friction.
また水溶性高分子化合物が８重量部に達しないと分散性への効果が小さく
且つ、付着性増大効果が小さい。逆に８０重量部より多くなると固体潤滑剤或いは無機化合物の効果を低下させ、噛み込み時の摩擦係数を低下させ、噛み込み性を低下させる影響が出る傾向がある。
If the water-soluble polymer compound does not reach 8 parts by weight, the effect on dispersibility is small and the effect of increasing adhesion is small. On the other hand, if it exceeds 80 parts by weight, the effect of the solid lubricant or the inorganic compound tends to be lowered, the friction coefficient at the time of biting is lowered, and the biting property tends to be lowered.
本発明潤滑剤組成物には、更に必要に応じ各種の他の公知の添加剤を配合することが出来る。その代表的なものを例示すると、ジエタノールアミンやトリエタノールアミン等の有機アミン、乳酸、クエン酸、グルコン酸、コハク酸、リンゴ酸等の水に可溶な有機酸、ホウ酸や脂肪酸のジエタノールアミン塩が挙げられる。なおこれ等はたとえば、固体潤滑剤及び無機化合物の液状コロイド液の分散安定性を高め、その希釈液の安定スプレー塗布性等に効果を示す作用がある。 The lubricant composition of the present invention may further contain various other known additives as required. Typical examples include organic amines such as diethanolamine and triethanolamine, organic acids soluble in water such as lactic acid, citric acid, gluconic acid, succinic acid and malic acid, and diethanolamine salts of boric acid and fatty acids. Can be mentioned. In addition, these have the effect | action which improves the dispersion stability of the liquid colloid liquid of a solid lubricant and an inorganic compound, and has an effect in the stable spray coating property etc. of the dilution liquid, for example.
本発明組成物を調製する手段も特に限定はなく、所定の成分を配合し、充分に混合し分散せしめれば良い。 The means for preparing the composition of the present invention is not particularly limited, and it is sufficient that predetermined components are blended, sufficiently mixed and dispersed.
本発明組成物に於いては、使用時に上記の成分が所定の範囲で含有されておれば良く、使用時に水で希釈して使用することも出来る。即ち濃縮物を予め調製しておき、これを使用時に水で希釈して使用することも出来る。 In the composition of the present invention, it is sufficient that the above-mentioned components are contained in a predetermined range at the time of use, and it can also be diluted with water at the time of use. That is, a concentrate can be prepared in advance, and it can be diluted with water at the time of use.
本発明の潤滑剤を供給塗付することにより、従来は噛み込みの問題と圧延負荷過剰の為、出来なかった高圧下熱間圧延が可能になった。加えて、耐焼付き性及びロール保護性も良好であり、特に熱間大歪圧延加工にも適用出来るという大きな効果がある。 By supplying and applying the lubricant of the present invention, it has become possible to perform hot rolling under high pressure, which could not be done due to the problem of biting and excessive rolling load. In addition, seizure resistance and roll protection are also good, and there is a great effect that it can be applied especially to hot large strain rolling.
本発明を理解し易くする為、以下に実施例並びに比較例を示して更に詳しく説明する。 In order to facilitate understanding of the present invention, the present invention will be described in more detail with reference to the following examples and comparative examples.
表１に示す所定の成分を所定量配合して、本発明の熱間潤滑剤組成物を調製した。 Predetermined components shown in Table 1 were blended in a predetermined amount to prepare a hot lubricant composition of the present invention.
表１に示す所定の成分を所定量配合して、本発明の熱間潤滑剤組成物を調製した。 Predetermined components shown in Table 1 were blended in a predetermined amount to prepare a hot lubricant composition of the present invention.
表１に示す所定の成分を所定量配合して、本発明の熱間潤滑剤組成物を調製した。 Predetermined components shown in Table 1 were blended in a predetermined amount to prepare a hot lubricant composition of the present invention.
表１に示す所定の成分を所定量配合して、本発明の熱間潤滑剤組成物を調製した。 Predetermined components shown in Table 1 were blended in a predetermined amount to prepare a hot lubricant composition of the present invention.
表１に示す所定の成分を所定量配合して、本発明の熱間潤滑剤組成物を調製した。 Predetermined components shown in Table 1 were blended in a predetermined amount to prepare a hot lubricant composition of the present invention.
表１に示す所定の成分を所定量配合して、本発明の熱間潤滑剤組成物を調製した。 Predetermined components shown in Table 1 were blended in a predetermined amount to prepare a hot lubricant composition of the present invention.
表２に示す所定の成分を所定量配合して、本発明の熱間潤滑剤組成物を調製した。 Predetermined components shown in Table 2 were blended in a predetermined amount to prepare a hot lubricant composition of the present invention.
表２に示す所定の成分を所定量配合して、本発明の熱間潤滑剤組成物を調製した。 Predetermined components shown in Table 2 were blended in a predetermined amount to prepare a hot lubricant composition of the present invention.
表２に示す所定の成分を所定量配合して、比較のための熱間潤滑剤組成物を調製した。 Predetermined components shown in Table 2 were blended in predetermined amounts to prepare a hot lubricant composition for comparison.
表２に示す所定の成分を所定量配合して、比較のための熱間潤滑剤組成物を調製した。 Predetermined components shown in Table 2 were blended in predetermined amounts to prepare a hot lubricant composition for comparison.
表２に示す所定の成分を所定量配合して、比較のための熱間潤滑剤組成物を調製した。 Predetermined components shown in Table 2 were blended in predetermined amounts to prepare a hot lubricant composition for comparison.
表２に示す所定の成分を所定量配合して、比較のための熱間潤滑剤組成物を調製した。 Predetermined components shown in Table 2 were blended in predetermined amounts to prepare a hot lubricant composition for comparison.
表２に示す所定の成分を所定量配合して、比較のための熱間潤滑剤組成物を調製した。 Predetermined components shown in Table 2 were blended in predetermined amounts to prepare a hot lubricant composition for comparison.
上記実施例１〜８及び比較例１〜５の夫々の組成物について熱間チムケン試験により摩擦係数及び耐焼付き性を測定した。その結果は表１及び表２の通りである。
＜摩擦係数測定試験＞
加熱試験片：鋼種ＳＳ−４００ （３０mmφ×５０mm円柱）
加熱試験片温度：１００〜１０００℃
ロール：ハイスロール
ロール回転数：１５０ｒｐｍ
荷重：２０ｋｇ一定
潤滑剤塗布方法：水分散液スプレー塗付（１Ｌ／ｍｉｎ）
摩擦係数の算出：トルク／荷重・ロール半径
The friction coefficient and seizure resistance of each of the compositions of Examples 1 to 8 and Comparative Examples 1 to 5 were measured by a hot Timken test. The results are shown in Tables 1 and 2.
<Friction coefficient measurement test>
Heated specimen: Steel grade SS-400 (30mmφ × 50mm cylinder)
Heated specimen temperature: 100-1000 ° C
Roll: High-speed roll Roll rotation speed: 150 rpm
Load: 20 kg constant Lubricant application method: Water dispersion spray application (1 L / min)
Calculation of friction coefficient: Torque / load / roll radius
＜試験方法＞
図１に示す装置にて（１）の試験片を（２）の高周波加熱コイルにより所定の温度に加熱し、その温度は（６）の熱電対により測定、記録し、（３）のロールと加熱された（１）の試験片が接触し、荷重２０ｋｇをかけた状態で（４）のスプレーより水分散液を塗布し、（５）のエアー水切りを行い、トルクを測定することにより摩擦係数を測定する。加熱温度は１００℃ずつ上昇させ、１０００℃まで行う。
<Test method>
In the apparatus shown in FIG. 1, the test piece of (1) is heated to a predetermined temperature by the high-frequency heating coil of (2), the temperature is measured and recorded by the thermocouple of (6), and the roll of (3) Friction coefficient by contacting the heated test piece (1), applying a water dispersion from the spray (4) with a load of 20 kg, draining air from (5), and measuring the torque. Measure. The heating temperature is increased by 100 ° C. and performed up to 1000 ° C.
＜耐焼付き性測定試験＞
加熱試験片：ＳＵＳ−３０４
加熱試験片温度：９００℃
ロール：ハイスロール
ロール回転数：１５０ｒｐｍ と ３００ｒｐｍ
荷重：２ｍｉｎ毎に５ｋｇずつ上げて焼付くまで荷重を上げる。（Ｍａｘ．５０ｋｇ）
潤滑剤塗布方法：水分散液スプレー塗付（１Ｌ／ｍｉｎ）
<Seizure resistance measurement test>
Heated specimen: SUS-304
Heated specimen temperature: 900 ° C
Roll: High-speed roll Roll speed: 150 rpm and 300 rpm
Load: Increase the load by 5 kg every 2 min until seizure occurs. (Max. 50kg)
Lubricant application method: aqueous dispersion spray application (1 L / min)
＜試験方法＞
図１に示す装置にて（１）の試験片を（２）の高周波加熱コイルにより所定の温度に加熱し、その温度は（６）の熱電対により測定、記録し、（３）のロールと加熱された（１）の試験片が接触し、荷重をかけた状態で（４）のスプレーより水分散液を塗布し、（５）のエアー水切りを行い、焼付きを示すまでの最大荷重を測定する。
<Test method>
In the apparatus shown in FIG. 1, the test piece of (1) is heated to a predetermined temperature by the high-frequency heating coil of (2), the temperature is measured and recorded by the thermocouple of (6), and the roll of (3) Apply the water dispersion from the spray (4) with the heated test piece (1) in contact and applying a load, drain the air in (5), and determine the maximum load until seizure is shown. taking measurement.
＜スプレー付着試験＞
ノズル：フルコーン０１５６５（１．５L/min at ３．０kg/cm2）
試験片：ＳＰＣＣ−ＳＤ（８０×１００ｍｍ）
塗布圧力：３．０kg/cm2
塗布時間：３ｓｅｃ
希釈濃度：３０ｗｔ％
希釈水温：２５℃
試験片温度：５０、１００、１５０℃
<Spray adhesion test>
Nozzle: Full cone 01565 (1.5 L / min at 3.0 kg / cm 2 )
Test piece: SPCC-SD (80 × 100 mm)
Application pressure: 3.0 kg / cm 2
Application time: 3 sec
Dilution concentration: 30 wt%
Dilution water temperature: 25 ° C
Test piece temperature: 50, 100, 150 ° C.
＜試験方法＞
図２に示す装置にて（７）のサンプル希釈液を（８）のノズルより、（１０）の試験片に塗布する。試験前後の試験片の重量差より付着量を求め、試験片面積（０．０１６ｍ２）で割って、付着量（ｇ／ｍ２）を計算する。
各サンプル希釈液とも５枚試験を行い、平均値を求めた。
<Test method>
In the apparatus shown in FIG. 2, the sample diluent (7) is applied to the test piece (10) from the nozzle (8). Determine the amount of deposition from the weight difference before and after the test pieces tested, divided by the specimen area (0.016 M 2), calculates the deposition amount (g / m 2).
Each sample dilution was tested for 5 sheets and the average value was determined.
但し、表１に於いて使用した各成分は以下のものである。
ステアリン酸カルシウム：大日本インキ化学工業（株）製
トリポリリン酸カリウム：米山薬品工業（株）製
水ガラス：富士化学（株）製
アニオン系界面活性剤：ジエチルヘキシルスルホコハク酸ソーダ
水溶性高分子化合物Ａ：イソブチレン−マレイン酸共重合物のナトリウム塩
「イソバン１０（クラレ（株）製）のナトリウム塩の２５％水溶液」
水溶性高分子化合物：ポリアクリル酸アンモニウム
「アロンＡ３０（東亞合成（製））」
クエン酸：和光純薬工業（株）製
ホウ酸塩：ホウ酸のジエタノールアミン塩「ボニックス３８（大同化学工業（株）製）」
However, each component used in Table 1 is as follows.
Calcium stearate: manufactured by Dainippon Ink and Chemicals, Inc. Potassium tripolyphosphate: manufactured by Yoneyama Pharmaceutical Co., Ltd. Water glass: manufactured by Fuji Chemical Co., Ltd. Sodium salt of isobutylene-maleic acid copolymer
"25% aqueous solution of sodium salt of Isoban 10 (Kuraray Co., Ltd.)"
Water-soluble polymer compound: ammonium polyacrylate
"Aron A30 (Toagosei Co., Ltd.)"
Citric acid: manufactured by Wako Pure Chemical Industries, Ltd. borate: diethanolamine salt of boric acid, “BONIX 38 (manufactured by Daido Chemical Co., Ltd.)”
但し、表2に於いて使用した各成分は以下のものである（表１で使用したもの
のは省く）。
普通鋼用市販熱間圧延油：大同化学工業（株）製ダイロールＳＨ−１３０
（エステル主成分、ＳＶ＝１１５，ＡＶ＝８）
ＳＵＳ用市販熱間圧延油：大同化学工業（株）製ダイロールＳＨ−３Ｓ
（硫化エステル・硫化オレフィン主成分）
However, the components used in Table 2 are as follows (the components used in Table 1 are omitted).
Commercial hot rolling oil for plain steel: Daido Chemical Co., Ltd. die roll SH-130
(Ester main component, SV = 115, AV = 8)
Commercial hot rolled oil for SUS: Daido Chemical Co., Ltd. die roll SH-3S
(Sulfurized ester / sulfurized olefin main component)
上記表１及び表２から次のことが明らかに判る。
（１）比較例３の水のみの場合と比較して、比較例１は低温部（１００℃から３００℃）は摩擦係数が高く噛み込み性は良好で、高温部（４００℃から１０００℃）は摩擦係数が低く圧延負荷軽減が期待出来るが、付着量が少ない為耐焼付性が充分でない。また、比較例２は比較例１より付着量は多いが、ＳＵＳ用熱間圧延油の耐焼付性には及ばない。
又比較例4（普通鋼用熱間圧延油）及び比較例5（ＳＵＳ用熱間圧延油）は付着量も多く、高温状態の圧延中の摩擦係数も低く圧延負荷が軽減出来るが、低温での摩擦係数が低い為、噛み込み性が悪い。
From the above Tables 1 and 2, the following can be clearly seen.
(1) Compared with the case of water of Comparative Example 3 only, Comparative Example 1 has a low coefficient of friction (100 ° C. to 300 ° C.) with a high coefficient of friction and good biting property, and a high temperature part (400 ° C. to 1000 ° C.). Has a low coefficient of friction and can be expected to reduce the rolling load, but the seizure resistance is not sufficient due to the small amount of adhesion. Further, Comparative Example 2 has a larger adhesion amount than Comparative Example 1, but does not reach the seizure resistance of the hot rolled oil for SUS.
Comparative Example 4 (hot rolling oil for plain steel) and Comparative Example 5 (hot rolling oil for SUS) have a large amount of adhesion and a low friction coefficient during rolling in a high temperature state, so that the rolling load can be reduced. The friction coefficient is low, so the biting property is poor.
（２）実施例１〜８は１００〜３００℃までの低温において摩擦係数が充分高く噛み込み性が良好であり、５００〜１０００℃の高温において摩擦係数が低下する為、圧延負荷軽減に効果がある特性を維持し、且つ、大幅に付着量が増大した為、耐焼付き性も大幅に向上した。特に、実施例４〜８はＳＵＳ用熱間圧延油と同等の耐焼付性を示した。 (2) Examples 1 to 8 have a sufficiently high friction coefficient at low temperatures up to 100 to 300 ° C. and good biting properties, and the friction coefficient decreases at high temperatures of 500 to 1000 ° C., which is effective in reducing rolling load. Maintaining certain characteristics and greatly increasing the adhesion amount, the seizure resistance was also greatly improved. In particular, Examples 4 to 8 exhibited seizure resistance equivalent to that of SUS hot rolling oil.
（３）実施例の中で、実施例１〜３は付着量がやや少なく、低温でも水より摩擦係数がやや低く、４００℃以上で摩擦係数低下を示し、７００℃以上で熱間圧延油に近い摩擦係数を示した。実施例４〜８は付着量が多く、低温で若干水より摩擦係数が低く、４００℃以上で摩擦係数低下を示し、７００℃以上では実施例１〜３より若干摩擦係数が高いが、耐焼付性はＳＵＳ用熱間圧延油と同等であった。何れの実施例も低温では普通鋼用熱間圧延油やＳＵＳ用熱間圧延油と比較して摩擦係数が充分高く、噛み込み性が良好であると考えられ、高温では水に比較して摩擦係数が充分低く、圧延負荷軽減に効果があり、大幅に付着量が増加させられたことで種々の高圧下熱間圧延に効果的な潤滑剤として適用出来ると考える。 (3) Among Examples, Examples 1 to 3 have slightly less adhesion, have a lower coefficient of friction than water even at low temperatures, show a decrease in coefficient of friction at 400 ° C or higher, and are hot rolled oil at 700 ° C or higher. It showed a close coefficient of friction. Examples 4 to 8 have a large amount of adhesion, a little lower coefficient of friction than water at low temperatures, and a decrease in coefficient of friction at 400 ° C. or higher, and a slightly higher coefficient of friction than Examples 1 to 3 at 700 ° C. or higher. The property was equivalent to that of SUS hot rolling oil. In any of the examples, the friction coefficient is considered to be sufficiently high at a low temperature as compared with the hot rolling oil for plain steel and the hot rolling oil for SUS, and the biting property is considered good. It is considered that the coefficient is sufficiently low, effective in reducing rolling load, and can be applied as an effective lubricant for various types of hot rolling under high pressure by greatly increasing the adhesion amount.
１．加熱試験片（３０φ×長さ５０ｍｍ円柱）
２．高周波加熱コイル
３．ロール（５０φ×巾８mmのリング）
４．スプレー塗布
５．エアー水切り
６．熱電対
７．サンプル液
８．ノズル
９．マグネットヒーター
１０．試験片
１１．ポンプ
1. Heated test piece (30φ × 50mm long cylinder)
2. 2. High frequency heating coil Roll (50φ x 8mm wide ring)
4). 4. Spray application Air drainer ６．
Claims (5)
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| JP2008274192A (en) * | 2007-05-07 | 2008-11-13 | Daido Chem Ind Co Ltd | Hot rolling oil composition |
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