JPS5971394A - Water-soluble cutting and grinding oil - Google Patents

Abstract

PURPOSE:To obtain a water-soluble cutting and grinding oil containing a specific oxidized paraffin salt and a specific ricinoleic acid polymer salt, having excellent cutting and grinding performance, free from ordor, resistant to corrosion and degratdation, and having high defoaming capability. CONSTITUTION:The objective waters-soluble cutting and grinding oil contains (A) an alkali metal salt and/or an amine salt of a oxidzed paraffin preferably having an acid value of about 20-200 and a saponification value of about 40- 500 and (B) an alkali metal salt and/or an amine salt of a ricinoleic acid polymer having an acid value of preferably about 40-150. The weight ratio of the component (A) to (B) is preferably about 10:90-90:10.

Description

[Detailed Description of the Invention] (Technical Field of the Invention) The present invention is useful when cutting metal or metal? This invention relates to a water-soluble cutting and grinding fluid used during grinding.

(Prior Art) Conventionally, as water-soluble cutting and grinding fluids, compositions containing chlorine and sulfur, or alkali metal salts or amine salts of higher calzenic acids have been used. Compositions containing these materials have been widely used. Although these compositions have excellent cutting and grinding properties, they have the following drawbacks.

(1) There is a strong odor. The sulfur-based extreme pressure additive Kanakura Mumono has a pronounced odor.

(2) Perishable. Items that contain sulfur-based extreme pressure additives are susceptible to spoilage.

(3) Easy to deteriorate. Deterioration during use, immediate decline in rust prevention? Easy to wake up.

(4) Easy to foam. This tendency is remarkable in products using Toguni higher fatty acid salts.

(Objective of the Invention) In view of the above-mentioned current situation, the present invention provides a material that has excellent machinability and grindability, is odorless, is resistant to corrosion, and is resistant to deterioration.
The purpose of this invention is to provide a cutting and grinding fluid with good antifoaming properties.

(Structure of the Invention) The present invention relates to one or more selected from among alkali metal salts or amine salts of paraffin oxide (hereinafter referred to as component A below C) and an alkali metal salt or amine salt of ricinoleic acid polycondensate. This water-soluble cutting and grinding fluid is characterized by containing one or more selected from the following (hereinafter referred to as component B) and gold.

In the present invention, the weight ratio of component A to component B is 10:90.
to 90: ], about O is good.

If the weight ratio of component A to component B deviates from this range, cutting performance and grinding performance will deteriorate, which is not preferable.

In the present invention, a water-soluble cutting and grinding fluid may be prepared by containing mineral oil in addition to components A and B.

The configuration of the present invention will be explained in detail below.

(Ingredient A) The oxidized fleas that constitute Ingredient A in the present invention are:
It can be obtained by heating the tsukurahuin hydrocarbon to a temperature of about 100 to 200° C. while blowing air into it according to a conventional method.

Industrially suitable tsukurahuin hydrocarbons are:
It is the so-called chili rough fin yarn f oil which contains a lot of chili rough fin hydrocarbon (OnH2n+2)'e. It is difficult to produce oxidized paraffin with desirable properties when the raw materials are cycloparaffin and a mixture of carbon and arsenide containing a large amount of aromatic raw carbon and arsenic.

Preferred oxidized paraffins for the present invention have an acid value of about 20 to 200 and a saponification value of about 40 to 400, and among them, an acid value of about 50 to 100.
It is even more desirable to have a saponification value of about 50 to 250.

In the present invention, sodium and potassium are practically used as the alkali metals constituting the alkali metal salt of oxidized nomurafin, but other alkali metals can also be used.

In the present invention, various amines that have conventionally been used to form amine salts in water-soluble cutting and grinding fluids can be used as the amines constituting the entire amine salt of acid f Hibarafin, but among these, the present invention Alkanolamines are immediately effective in the invention.

When completely reacting the oxidized Nomurafin with an alkali or amine, the neutralization equivalent of the alkali or amine, [:
If a slightly excessive amount is added, the rust prevention properties and deterioration resistance of the diluted cutting and grinding fluid of the present invention will be improved.

It goes without saying that rough-in oxidized salt can be used as a pre-formed salt, but it can also be made on the spot by mixing rough-in oxide and alkali or amine into a cutting and grinding fluid. It can also be formed.

(Component B) The ricinoleic acid type condensate used in the present invention is obtained by dehydration condensation by heating at 150 to 240°C in a nitrogen stream according to the conventional method of ricinoleic acid. may be specified as an index. The appropriate value of the acid value of the ricinoleic acid polycondensate varies depending on the composition of the cutting and grinding fluid.
Although it is difficult to set a standard, it can be selected appropriately by referring to the following trends. That is, in general, the lower the acid value, the more advantageous it is in machinability and grindability, and if the acid value is 150 or more, the intended effects of the present invention cannot be obtained. On the other hand, if the acid value is too low, the emulsion will dissolve and the solubility of the soluble will deteriorate. Generally speaking, the desirable acid value of the ricinoleic acid polycondensate is 40 to 1.50.

Practical alkali metals constituting the alkali metal salt of ricinoleic acid polycondensate in the present invention are sodium and potassium, but other alkali metals can also be used.

In the present invention, as the amine constituting the entire amine salt of ricinoleic acid polycondensate, various amine golds that have been conventionally used to form amine salts in water-soluble cutting and grinding fluids can be used. In the present invention, vulcanolamine is immediately effective.

When reacting the ricinoleic acid polycondensate with an alkali or amine, it is recommended to use the alkali or amine in a slightly excess amount than the neutralization equivalent (to improve the rust prevention properties and deterioration resistance of the diluted cutting and grinding fluid of the present invention). fL properties are improved.

It goes without saying that polycondensate metal salts of linoleic acid can be used in advance, but they can also be used on the spot by preparing cutting and grinding fluids using ricinoleic acid polycondensates and alkalis or amines. It is also possible to create a fund.

(Optional Components) The water-soluble cutting and grinding fluid of the present invention may be prepared using only component A or component B, or may be prepared by adding mineral oil, surfactant, anticorrosive, preservative, etc. to these components and using conventional means. The composition may be an emulsion type or a soluble type depending on the composition.

The effective composition ratio of component A and component B in the cutting, cutting, and oil agent cannot be uniformly determined due to the relationship with other components used together, but is appropriately selected depending on the purpose of use, usage conditions, etc.

[Effects of the Invention] The cutting and grinding fluid of the present invention has excellent properties as described below.

(1) Excellent cutting and grinding properties.

(2) No odor.

(3) Resistant to decay.

(4) Resistant to deterioration.

(5) Good antifoaming properties.

(Examples) The present invention will be explained in more detail by showing examples, comparative examples, and reference examples of the present invention below, but the present invention is not limited in any way by the following examples.

Reference Example 1 (Oxidation) Production of ξ Rough-in) White spindle oil 1001i''k was oxidized under the following conditions to obtain oxidized rough-in with an acid value of 58 and a saponification value of 172. This was named Gold 0-1.

Reaction temperature 150°C, reaction time 10 hours, air, fij
o, 3~Q, 4 A/min.

Catalyst Manganese naphthenate, Catalyst amount: 01% by weight as Mn.

Reference Example 2 (Production of acid f Hibarafin) Using 125/B Roughin 1001i', reaction was carried out under the same conditions as in Reference Example 1 to obtain e (Hibarafin) with an acid value of 77 and a saponification value of 210. Name it 2.

Reference Example 3 (Production of ricinoleic acid polycondensate) Ricinoleic acid was heated to 200±10° C. in a total nitrogen stream to obtain polycondensates having acid values of 98 and 47, respectively. respectively′ff:P
-1 Name the work P-2. The properties of P-] and P-2 are shown in Table 1.

Table 1* The composition of the water-soluble cutting and grinding fluid of the present invention is shown in Tables 2 and 3 according to the vapor pressure drop method.
Examples are given in weight % in the table.

Table 2 shows the emulsion type, and Table 3 shows the soluble type.

Comparative examples A to D in Table 2 are emulsion types,
Comparative Examples E to G in Table 3 are soluble types.

The composition of Example 1 was prepared as follows.

Oxidation) ξ Roughin O-1101, ricinoleic acid polycondensate P-110? and triethanolamine 10? The mixture was thoroughly mixed and stirred at 60° C. for 10 minutes to obtain a translucent viscous amine salt mixture.

To the above amine salt mixture, 56.51 i' of mineral oil, 6F of sodium petroleum sulfonate, 67 of nonylphenol surfactant, 0.5P of preservative and 1 g of water were added and stirred for 10 minutes to obtain a liquid composition. Ta.

The composition of Example 2 was prepared as follows.

Acid f Hinografine O-210P, Ricinoleic acid polycondensate P-21or, Triethanolamine 10ii'
and mineral oil 191i' (approximately 1/3 of the total amount),
Stir at 60°C for 10 minutes. Then mineral oil 37,5
? (Remaining amount of mineral oil added earlier) and further ingredients below sodium petroleum sulfonate? Same as the value in Table 2 i
A liquid composition of gold was obtained by sequentially adding a number of ingredients and stirring to mix them.

The composition of Example 3 was made as follows.

Acid f-grafine O-1, ricinoleic acid polycondensate P-
2. Mix 2 of the same amounts of triethanolamine, potassium hydroxide, and water as shown in Table 2, and heat at 60°C.
After stirring for 0 minutes, a translucent viscous mixture of amine salt and alkali metal salt was obtained.

Thereafter, the remaining ingredients were sequentially added and mixed in the same manner as in Example 1.
Liquid composition k? It was.

Comparative Examples A, B, O The compositions of D were prepared in the same manner as in Example 2.

The composition of Example 4 was made as follows.

Is each component the same as the value in Table 3? Take only the numbers and mix them, 6
The liquid composition was stirred at 0° C. for 10 minutes. Example 5
, Comparative IE, Comparative Example F, and Comparative Cylinder Example G were made in the same manner as in Example 4.

Table 2 The performance of the cutting and grinding fluids shown in Table 2 and the cutting research fluids shown in Table 3 was evaluated by the following tests.

Performance evaluation test ■ Test items and test methods (a) Cutting property test The wipe was adjusted to a 1Qwt% aqueous solution with tap water, and all F cutting resistance values were measured using a surface broach tester to evaluate the cutting property.

Cutting conditions Machine Surface broach tester Tool 6-blade surface broach (■80μ/blade) Tool material 5KI-155 (rake angle 15 degrees, rake angle 2 degrees)
Work material SOr 2'2 (Brunnell hardness 85~9
3) Cutting speed: 4 m/m1n (o) Grindability test The wipes shown in Table 3 were adjusted to a 1 wj% aqueous solution with tap water, and evaluated by the grinding resistance value using a surface grinder.

Grinding conditions are shown in Table 4.

Table 4 (c) Rot Resistance Test The wipes were diluted 10 times and 20 times with sterilized water to make a total emulsion sample solution.

500rn sterilized for each sample 71i400m'! The mixture was placed in a flat-bottomed flask, and a total of 20 microliters of the rotten emulsion (number of viable bacteria I x 108 cells/-) was inoculated thereto as a seed culture, and after being tightly capped, the mixture was cultured at 35°C for 21 days. and 0°1.2,7
．． On the 15th and 21st days, a portion of each sample solution was aseptically collected, and the number of bacteria was measured using the plate dilution method.
measurements, changes in appearance and odor were observed.

Note that the rust prevention performance was observed using the following method.

That is, approximately 151 dry-cut foundry chips (FO
-25,8~12 meshes)? Veterinary dish (inner diameter approx. 5 Q
About 25 mm of the sample grinding fluid was added thereto, thoroughly shaken, and then allowed to stand for about 10 minutes. Next, the sample grinding fluid was removed using a decanting method, and the state of rust generated on the Petri dish was examined over time.

b) Deterioration resistance test An emulsion obtained by diluting the wipe 10 times and 20 times with tap water was used as a sample solution.

300 fng of each sample solution and 91 dry-cut cast iron chips were placed in a 500 ml Erlenmeyer flask, and after the flask was tightly stoppered, the flask was left standing in a constant temperature bath at 50° C. for 48 hours. Thereafter, each sample solution is taken out from the thermostatic chamber, left to cool, and then decanted to obtain a degraded solution. Changes in appearance and rust prevention performance (cast iron chip method) were observed before and after deterioration.

(The samples were prepared by diluting antifoaming test wipes 60 times and 80 times with tap water.

Pour 40 μg of each sample solution into a 100 mg female cylinder/der with a stopper (liquid temperature 30°C), and after sealing, move the cylinder up and down for 20 minutes.
After shaking, the sample was allowed to stand, and the amount of bubbles (-) was measured over time.

■ Test results (a) Cutting performance The results for the wiping solution in Table 2 with a concentration of 10 wt% are shown in Figure 1.

From the results shown in Figure 1, the cutting and grinding fluid of the present invention has a cutting performance equivalent to or better than that of the cutting and grinding fluid containing a large amount of chlorine and sulfur (Comparative Example D), and contains higher fatty acid salts. It is clear that the cutting performance is far superior to that of (Comparative Example C). In addition, the cutting and grinding fluid of the present invention (Comparative Example A) containing only the salt of Vi oxidized paraffin is superior in machinability to the cutting and grinding fluid (Comparative Example B) containing only the salt of linoleic acid or ricinoleic acid polycondensate. It is clear that

(B) Grindability Figure 2 shows the grinding resistance of a 1 wt % aqueous solution of the oil shown in Table 3.

It is clear from the test results that the grinding fluid of the present invention is superior to conventional grinding fluids in terms of grindability.

(・9 Rot resistance Table 4 shows the results of oral measurements.

From the results in Table 4, it is clear that the cutting and grinding fluid of the present invention is superior in rot resistance to conventional cutting and grinding fluids.

Table 5 shows the appearance and rust prevention performance of each sample solution before and after corrosion.

((e) Defoaming property Table 6 shows the amount of bubbles (-) in each sample solution over time. show.

Table 6 As the results in Table 6 show, the cutting and grinding fluid of the present invention:
The conventional cutting and grinding fluid F also has excellent antifoaming properties.

[Brief explanation of drawings]

The attached FIG. 1 is a graph showing the cutting resistance of the oil according to the embodiment of the present invention, and FIG. 2 is a graph showing the grinding resistance. The symbols in the drawings represent the following, respectively. 1 is Example 1.2 is Example 2.3 is Example 3, A is Comparative Example A1 B is Comparative Example B% C is Comparative Example C1D is Comparative Example, 4 is Example 4.5 is Example 5 , E is Comparative Example B, F is Comparative Example F%G is Comparative Example G. Applicant Yushiro (Representative of Higaku Kogyo Co., Ltd. Patent attorney Minoru Isaka)

Claims (2)

[Claims] (1) one or more selected from the group consisting of alkali metal salts or amine salts of oxidized nografine; and one selected from alkali metal salts or amine salts of ricinoleic acid polycondensates. or a water-soluble cutting and grinding fluid characterized by containing two or more of them. (2) One or more selected from alkali metal salts or amine salts of oxidized nografine, and one or two selected from alkali metal salts or amine salts of ricinoleic acid polycondensates. A water-soluble cutting and grinding fluid containing at least one mineral oil and a mineral oil.