JPS6019800B2 - cutting fluid - Google Patents

Description

[Detailed description of the invention] The present invention relates to components for cutting fluids.

In the present invention, the term "cutting fluid" includes both a cutting agent and an abrasive. Cutting fluids are broadly classified into water-insoluble cutting fluids and water-soluble cutting fluids, and the components of the present invention are particularly useful for water-soluble cutting fluids. The basic conditions that a cutting fluid must meet are that it does not have lubricity, cooling ability, rust prevention, and other incidental conditions, such as not having superfoaming properties, roughness on hands, toxicity to humans and animals, etc.

Conventionally, nitrites have been most widely used as they meet these conditions relatively well, but they are not necessarily satisfactory in terms of lubricity and waste liquid treatment properties, and their suffocating properties have become a social issue. There is a growing demand for the development of a cutting fluid to replace this. The present invention provides a cutting fluid containing a composition having extremely excellent properties in terms of lubricity and rust prevention, namely, the general formula: [wherein, X is CI, Br, 1
halogen selected from, n is a number from 0 to 2, R is hydrogen, hydroxyl group, alkyl group having 1 to 8 carbon atoms, or alkoxy group having 1 to 8 carbon atoms, M is alkanolamine salt, ammonium salt, alkali metal salt This invention relates to a cutting fluid containing a halogenated benzoic acid derivative represented by the following formula.

In the present invention, the alkali salt of a halogenated benzoic acid diconductor may itself be used as the main ingredient of a solution-type water-soluble cutting fluid. It may also be used as a rust preventive additive or gutter pressure additive for water-soluble cutting fluids and emulsion-type water-soluble cutting fluids.

In the present invention, halogen is chlorine, bromine, or iodine, and iodine and/or bromide are particularly preferred because they have extremely high rust prevention and gas pressure properties.

Examples of benzoic acid derivatives include hydroxybenzoic acid, alkoxybenzoic acid, and alkylbenzoic acid. These alkyl groups are preferably lower alkyl groups, especially alkyl groups having 1 to 8 carbon atoms, and those having a higher alkyl group are suitable as additives for water-soluble cutting fluids, especially as oil-soluble extreme pressure additives. . Suitable alkali salts include alkanolamine salts, alkali metal salts, ammonium salts, and various amines. Particularly suitable alkali salts include alkanolamine salts such as triethanolamine, jetanolamine, and monoethanolamine.

When the halogenated benzoic acid derivative alkali salt of the present invention is used as the main ingredient of a solution-type water-soluble cutting fluid, 0.
It is preferably used in a range of 1 to 3.0% (by weight), preferably 0.3 to 1.0%. When used as a rust preventive or gutter pressure additive, 0.1 to 3.0% (weight), preferably 0
．． It is 2 to 1.0%. The halogenated benzoic acid enigmatic conductor alkali salt of the present invention has significantly superior rust prevention properties compared to nitrites, which are typical conventional cutting fluid components, and is also significantly superior in gutter pressure I properties. In particular, typical conventional additives generally have poor rust prevention properties and poor antifoaming properties, but the halogenated benzoic acid derivative alkal salt of the present invention is an oil-based polar additive. It has the same extreme strength as a pressure additive, and has a foaming property of 4. Furthermore, when this is used as a cutting fluid component, it extends tool life and improves surface finish accuracy. Further, the alkali salt of a halogenated benzoic acid derivative of the present invention is not limited to cutting fluids, but can also be used as an aqueous antirust extreme pressure additive, for example, as an additive for temper rolling oil.
This will be explained below by giving examples. Example 1 Using a 0.5% by weight aqueous solution of trietanoamine salt of various halogenated benzoic acid derivatives, anti-bell properties, surface tension, coefficient of friction and pressure resistance are measured.

Each measurement condition is as follows. 01 Rust prevention'a) Senmono chips method: Dry cutting chips of castings are immersed in the aqueous solution, the solution is drained, the chips are placed in a petri dish, and the state of rust is observed after 7 hours.

Evaluation is performed on a 10-point scale, with a score of 10 indicating no rust at all. '.

} Cold-rolled steel plate method: A polished cold-rolled steel plate is soaked in the aqueous solution, air-dried, and left indoors for 7 hours, after which the state of rust is observed. The evaluation is the same as the money-cut method. '2)
Surface tension: Surface tension of 25 oo was measured using a Dunoy surface tensiometer.

'3' Friction coefficient: 25 by Soda type O-type pendulum oil tester
It was measured in qo.

■Pressure resistance: 20mm by Soda four-ball lubricating oil tester. p
．． Measured in m.

The test results are shown in Table-1.

As is clear from Table 1, it is understood that halogenated benzoic acid derivatives have significantly higher pressure resistance than conventional nitrites and are excellent in rust prevention.

Example 2 An abrasive with the following formulation was diluted with water to 5M,
Using this, the time taken to grind a steel plate (S4 & raw material) with a surface grinder to cause clogging was measured and compared with the case where nitrite was used.

Formula Parts by weight m-Iodobenzoic acid 10 Triethanolamine 20 Water
70 Nitrite-based abrasive formulation Sodium nitrite 10 Triethanolamine 20 Water
70 (when used, 5M sound 1 with water
This dilution) Grinding conditions Machine: Surface grinder Peripheral speed: 1800w'min Work material: S-4 string Grinding wheel: WA-46JV Cutting depth: 2/10 No clogging occurred for 25 minutes using the abrasive of the Matsumoto invention. However, with conventional nitrite-based abrasives, clogging occurred in 14 minutes.

Example 3 The effect of adding iodobenzoic acid triethanolamine salt as an extreme pressure additive to an emulsion-type cutting fluid is compared with that of no additive.

Cutting fluid formulation {1' Part by weight Oleic acid 5 Triethanolamine 21m-Iodobenzoic acid
10 Sodium petroleum sulfonate
10 anti-rust additives
5 amine preservative
2 water 4
2 Cutting fluid formulation '2) - Comparative example Part by weight Oleic acid 5 Triethanolamine 15 Sodium petroleum sulfonate 10 Antirust additive
5 Amiso preservative
2 water
58 Cutting conditions Machine: band saw Work material: Conod S4 (condensed product) Cutting speed: 200 machines/min Cutting fluid dilution ratio: 2 pm Cutting fluid containing iodine benzoate When using a cutting agent, the number of pieces to be cut reaches 2000 W, but with a cutting powder that does not use this, the cutting becomes impossible at a hardness of 10,000 to 1,200 M.

Example 4 Sodium m-iodobenzoate (20% by weight of sodium m-iodobenzoate and 8% by weight of sodium carbonate diluted 50 times with water) was used as a temporary rust preventive agent after pickling a steel plate. When used, the rust prevention properties are significantly improved, and the nitrite-based rust preventive properties, which were conventionally most commonly used, are improved.
No more problems with waste liquid treatment.

Claims (1)

[Claims] 1 General formula: ▲There are mathematical formulas, chemical formulas, tables, etc.▼ [In the formula, X is a halogen selected from Cl, Br, I, n
is a number from 0 to 2, R is hydrogen, a hydroxyl group, an alkyl group having 1 to 8 carbon atoms, or an alkoxy group having 1 to 8 carbon atoms, and M is an alkanolamine salt, ammonium salt, alkali metal salt, or amine salt. A cutting fluid containing the halogenated benzoic acid derivative shown below. 2. The cutting fluid according to item 1, wherein the halogen is bromine or iodine. 3. The cutting fluid according to item 1, wherein the alkali salt is an alkanolamine salt. 4. The cutting fluid according to any one of items 1 to 3, wherein the cutting fluid is a solution type water-soluble cutting fluid. 5. The cutting fluid according to any one of items 1 to 4, wherein a halogenated benzoic acid derivative is added as an extreme pressure additive.