Water-soluble metalworking oil agent
AssigneeIdemitsu Kosan Co., Ltd.
InventorsTomoaki OKANO, Shunsuke KOYA
Life of this patent
Estimating the term…
Abstract
Provided is a water-soluble metalworking oil comprising two or more amine compounds (A) each having a volatility of 20% or less as calculated from the following formula (i) when heated at 50° C. for 48 hours, and a fatty acid (B), wherein a content of an amine compound (X) not corresponding to component (A) is less than 5.0 parts by mass based on 100 parts by mass of the total amount of component (A): Volatility ( % ) = ( [ Mass of amine compound before being heated ] - [ Mass of amine compound after being heated for 48 hours ] ) / [ Mass of amine compound before being heated ] × 100. Formula ( i )
Claims13
1:
- A water-soluble metalworking oil, comprising:
- two or more amine compounds (A) each having a volatility of 20% or less as calculated from the following formula (i) when heated at 50° C. for 48 hours as component (A), and
- a fatty acid (B) as component (B),
- wherein a content of an amine compound (X) not corresponding to the component (A) is less than 5.0 parts by mass based on 100 parts by mass of a total amount of the component (A):
- Volatility
-
- (
- %
- )
- =
- (
- [
- Mass
-
- of
-
- amine
-
- compound
-
- before
-
- being
-
- heated
- ]
- -
- [
- Mass
-
- of
-
- amine
-
- compound
-
- after
-
- being
-
- heated
-
- for
-
- 48
-
- hours
- ]
- )
- /
-
- [
- Mass
-
- of
-
- amine
-
- compound
-
- before
-
- being
-
- heated
- ]
- ×
- 100.
- Formula
-
- (
- i
- )
2:
- The water-soluble metalworking oil according to claim 1, wherein a content of the component (A) is more than 5.0% by mass based on a total amount of the water-soluble metalworking oil.
3:
- The water-soluble metalworking oil according to claim 1, wherein the component (A) comprises at least two amine compounds (A1) each having a volatility of 10% or less.
4:
- The water-soluble metalworking oil according to claim 1, wherein a total content of a polyalkylene glycol having a weight-average molecular weight of 12,000 or less (Y1) and a water-insoluble compound having a polyoxyalkylene group (Y2) is less than 70% by mass based on a total amount of the water-soluble metalworking oil.
5:
- The water-soluble metalworking oil according to claim 4, wherein a content of the polyalkylene glycol having a weight-average molecular weight of 12,000 or less (Y1) is less than 15.0% by mass based on the total amount of the water-soluble metalworking oil.
6:
- The water-soluble metalworking oil according to claim 4, wherein a content of the water-insoluble compound having a polyoxyalkylene group (Y2) is less than 15.0% by mass based on the total amount of the water-soluble metalworking oil.
7:
- The water-soluble metalworking oil according to claim 1, wherein a content of the component (B) is 5.0% by mass or more based on a total amount of the water-soluble metalworking oil.
8:
- The water-soluble metalworking oil according to claim 1, wherein [(A)/(B)], which is a ratio of a base value derived from the component (A) to an acid value derived from the component (B), is 0.50 to 10.0.
9:
- The water-soluble metalworking oil according to claim 1, further comprising a nonionic surfactant (C).
10:
- The water-soluble metalworking oil according to claim 1, further comprising a base oil (D).
11:
- The water-soluble metalworking oil according to claim 1, further comprising water (E).
12:
- A metalworking fluid, comprising:
- the water-soluble metalworking oil according to claim 1 and
- water.
13:
- A metalworking method, comprising:
- processing a workpiece comprising metal by applying the metalworking fluid according to claim 12.