JPH07188690A - Temper rolling oil - Google Patents

Abstract

PURPOSE:To provide a water-soluble temper rolling oil which can enable easy shape control without causing staining of the rolling mill in the temper rolling of a hard material such as a silicon steel sheet and can further enable high-draft temper rolling by mixing specified compounds with each other in a specified mixing ratio. CONSTITUTION:This oil is prepared by mixing 3-10wt.% 4-12 C aliphatic dibasic acid with 1-6wt.% 8-20 C saturated fatty acid, 2-12wt.% 14-18 C monoenoic carboxylic acid, 1-15wt.% arylsulfonamidecarboxylic acid and 5-25wt.% alkanolamine. Desirable examples of the monoenoic carboxylic acids include myristoleic acid, palmitoleic acid and oleic acid. Especially, a combination of lauric acid with oleic acid is desirable as the combination of the saturated fatty acid with the monoenoic carboxylic acid. An example of the alkanolamine is monoethanolamine. This oil is diluted with water to a concentration of 5-20% before use.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tempered rolling oil used for high-pressure down-ratio temper rolling of a hard plate such as a silicon steel plate.

[0002]

2. Description of the Related Art In a hard material such as a silicon steel sheet, the reduction ratio is increased to about 10% in temper rolling after annealing, and the orientation is controlled by aligning the atomic orientation. Conventionally, high-pressure-ratio temper rolling of such a hard material has been carried out using an animal or vegetable fat or oil such as beef tallow or an emulsion rolling oil based on a fatty acid ester as the temper rolling oil. However, the use of emulsions causes problems in other rolling processes such as dirt on the mill and dry skin pass. Therefore, a water-soluble tempered rolling oil without such a problem is desired.

As a water-soluble tempered rolling oil, Japanese Patent Publication No.
-27251, JP-A-56-81397, JP-A-5
No. 8-162697, JP-A-58-198593, JP-B-2-22118, and JP-A-5-59389. All of these are used in a normal temper rolling process of a cold-rolled steel sheet, and are designed so that the rolling reduction can be suppressed low by increasing the friction coefficient. Therefore, when the temper rolling of the hard material is performed using these temper rolling oils, only a reduction rate of several% can be obtained per temper rolling, and for the high pressure reduction temper rolling, There is a problem that the number of times of temper rolling must be increased.

[0004]

DISCLOSURE OF THE INVENTION The present invention provides a tempered rolling oil which can be temper-rolled for a hard material, can be easily shape-controlled without causing mill fouling, and can be temper-rolled at a high pressure reduction rate. The purpose is to

[0005]

That is, the present invention has 4 to 1 carbon atoms.
2 to 3% by weight of aliphatic dibasic acid, 1 to 6% by weight of saturated fatty acid having 8 to 20 carbon atoms, 2 to 12% by weight of monoenecarboxylic acid having 14 to 18 carbon atoms, and 1 to 15 of arylsulfonamidecarboxylic acid Wt% and alkanolamine 5-5
It relates to a water-soluble tempered rolling oil containing 25% by weight.

The tempered rolling oil of the present invention contains a monoenecarboxylic acid. By adding the monoenecarboxylic acid, the tempered rolling oil can be prevented from gelling or solidifying and the friction coefficient can be reduced.

The monoenecarboxylic acid has 14 carbon atoms.
Those having a number of 18 to 18 are preferably used, and myristoleic acid, palmitoleic acid and oleic acid are particularly preferable.
Even if only a saturated fatty acid such as stearic acid is added instead of the monoenecarboxylic acid, the tempered rolling oil solidifies and a water-soluble tempered rolling oil cannot be obtained.

The tempered rolling oil of the present invention contains monoenecarboxylic acid in an amount of 2 to 12% by weight. If the content is 2% by weight or less, sufficient reduction of the friction coefficient cannot be obtained. 12% by weight
Even if it is contained above, the degree of reduction of the friction coefficient is saturated.

The tempered rolling oil of the present invention further has 12 to 12 carbon atoms.
It contains 1 to 6% by weight of 20 saturated fatty acids. By combining saturated fatty acids with monoenecarboxylic acids, it is possible to further reduce the coefficient of friction. Especially when lauric acid and oleic acid are combined, not only the coefficient of friction is reduced, but also the viscosity hardly changes even if the concentration changes due to water dilution during use of the tempered rolling oil. For this reason, when the pump is used during use, there is no change in viscosity due to a change in concentration, and stable rolling operation is possible.

The tempered rolling oil of the present invention contains an aliphatic dibasic acid having 4 to 12 carbon atoms as a rust preventive agent. As the aliphatic dibasic acid, those having 4 to 12 carbon atoms are preferably used,
An aliphatic dibasic acid having 8 to 12 carbon atoms is more preferable because it also has an effect of reducing the friction coefficient. The tempered rolling oil of the present invention contains 3 wt% to 8 wt% of the dibasic acid. If the content of the dibasic acid is less than 3% by weight, a good rust preventive effect cannot be obtained, and if it exceeds 8% by weight, the rust preventive effect is saturated, which is not preferable.

As the alkanolamine used in the tempered rolling oil of the present invention, any of those usually contained in tempered rolling oils or lubricating oils is preferably used. Specific examples include monoethanolamine, diethanolamine, triethanolamine, propanolamine and cyclohexylamine. The alkanolamine is contained in the tempered rolling oil of the present invention in an amount of 5 to 25% by weight.

The refining rolling oil of the present invention further contains an aryl sulfonamide carboxylic acid. The addition of arylsulfonamide carboxylic acid further improves the rust preventive effect. The arylsulfonamidecarboxylic acid is contained in the tempered rolling oil of the present invention in an amount of 1 to 15% by weight. When the content of the arylsulfonamidocarboxylic acid is 1% by weight or less, a good rust preventive effect cannot be obtained, and when it exceeds 15% by weight, the effect is saturated, which is not preferable.

The tempered rolling oil of the present invention further contains a chelating agent and a surfactant for improving wettability in an amount of 0.1 to 1% by weight.
You may add. Further, oxycarboxylic acid such as gluconic acid and citric acid may be added in order to act as a chelating agent and improve the rust preventive effect. In the tempered rolling oil of the present invention, the remaining amount of the above substance is water.

The tempered rolling oil of the present invention is particularly preferably used for high pressure down temper rolling after annealing a hard material such as a silicon steel sheet. As hard materials that can be temper-rolled using the temper-rolling oil of the present invention, in addition to silicon steel plates, 1/4 hard steel plates, 1 /
2 hard steel plate and the like. The tempered rolling oil of the present invention is diluted with water to 5 to 20% for use.

[0015]

The present invention will be described in more detail with reference to Examples and Comparative Examples. The tempered rolling oil Nos. 1 to 7 of the examples and the tempered rolling oil Nos. Of the comparative examples having the compositions shown in Table 1 were used.
8 was prepared. Further, as a comparative example, the temper rolling oil N
Commercially available solution type temper rolling oils A and B were used as Nos. 9 and 10.

[0016]

[Table 1]

1. Measurement of Soda Pendulum Friction Coefficient A 10% aqueous solution of tempered rolling oil Nos. 1 to 10 was used to measure the friction coefficient with a Soda pendulum friction measuring device. The results are shown in Table 2.

2. Measurement of coefficient of friction by roll wear tester
Operate the roll under the following conditions using a 10% aqueous solution of constant temper rolling oil No. 1 to No. 10, 1 than the torque over time for each
The friction coefficient at 5, 30, 45 and 60 seconds was calculated. Conditions: Concentration: 10%, Temperature: 40 ° C Gear ratio; 1: 1: 27 (945rpm, 1200rpm <300mpm>) Sliding speed: 64m / min Load load: 950kg Roll: SS-400 (assuming strip), Roll Diameter: 80 mm, lower, SUJ-2 (work roll assumed), roll width: 50
mm results are shown in Table 2.

3. Viscosity test Tempered rolling oil Nos. 1 to 10 with water 5, 10, 15, 2
The viscosity at each concentration when diluted to 0, 30, and 100% was measured by a Canon-Fenske viscometer. The results are shown in Table 2.

4. Antirust test steel plate JIS-3141 (60 × 80 × 1 mm) was degreased, and each tempered rolling liquid (tempered rolling oil Nos. 1 to 10 was 10%).
Indoor exposure test and 3
A stack test was performed for each sheet and the rusting condition was observed for 30 days. The results are shown in Table 2.

[0021]

[Table 2]

As can be seen from Table 2, the tempered rolling oil of the present invention has a low coefficient of friction and its viscosity upon dilution is not so high. Particularly, the tempered rolling oil of No. 3 shows almost no change in viscosity due to the difference in concentration, and stable rolling operation is possible.
Further, the tempered rolling oil of the present invention also has good rust preventive properties.

5. Test results in actual machine Conditioned rolling oil Nos. 1 to 3, 6, 8, 9, 1 under the following conditions
0 was used for temper rolling, and the maximum possible elongation was determined. Base material: spcc-CAL material; thickness 1.58 x width 913 m
m Si-Steel (Steel containing 0.5% silicon) -CAL
Material; Thickness 0.51 x Width 1084 mm Rolling speed: 300 mpm, Inlet tension: 4.5 to
n, delivery side tension: 6 tons, load: 800 tons, temper rolling liquid: temper rolling oil No. 1
Each of ~ 3, 6, 8, 9, 10 was diluted with water to 10% and used. The results are shown in Table 3.

[0024]

[Table 3]

From Table 3, it can be seen that the temper rolling oil of the comparative example has a high friction coefficient, so that the maximum elongation, that is, the maximum rolling reduction can be suppressed to a low level. However, when the temper rolling oil of the present invention is used, only ordinary steel sheets can be used. Not only that, it has become possible to perform high-pressure draft temper rolling of hard steel sheets such as silicon steel sheets.

[0026]

The tempered rolling oil of the present invention is water-soluble,
Good detergency. Therefore, problems such as mill fouling, which is a problem with conventional emulsion-type tempered rolling oils, do not occur. The temper rolling oil of the present invention has good rust resistance and a relatively low friction coefficient, and enables sufficient high pressure reduction rolling in one temper rolling step. Further, in the case of blending the tempered rolling oil of the present invention, there is little change in viscosity due to the concentration at the time of dilution, and particularly stable rolling operation is possible.

Continuation of the front page (51) Int.Cl. ⁶ Identification number Reference number in the agency FI Technical display location C10M 133: 08) C10N 30:12 40:24 (72) Inventor Makoto Yamaguchi 1 Kawasaki-cho, Chuo-ku, Chiba-shi, Chiba Address Kawasaki Steel Co., Ltd. Chiba Steel Works (72) Inventor Yasutaka Uchida 1 Kawasaki-cho, Chuo-ku, Chiba City, Chiba Prefecture Kawasaki Steel Co., Ltd. Chiba Steel Works (72) Inventor Hiroyuki Ito 1 Kawasaki-cho, Chuo-ku, Chiba City Address Kawasaki Steel Co., Ltd. Chiba Works (72) Inventor Toshikazu Ikeda 2-3 1-3 Shibukawa-cho, Yao-shi, Osaka Prefecture Japan Quaker Chemical Co., Ltd. (72) Inventor Kiyotsugu Ogihara Nii Shibukawa-cho, Yao-shi, Osaka Prefecture Chome 1-3, Japan Quaker Chemical Co., Ltd.

Claims (1)

[Claims] 1. An aliphatic dibasic acid 3-1 having 4 to 12 carbon atoms
0% by weight, 1 to 6% by weight of saturated fatty acid having 8 to 20 carbon atoms,
2 to 12% by weight of monoenecarboxylic acid having 14 to 18 carbon atoms, 1 to 15% by weight of arylsulfonamidecarboxylic acid
And a water-soluble tempered rolling oil containing 5 to 25% by weight of an alkanolamine.