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Lubricating oil composition for metal working

A lubricating oil composition and metal processing technology, applied in the direction of lubricating compositions, additives, petroleum industry, etc., can solve the problems of reduced processing accuracy, tool damage, material fracture, etc., and achieve excellent processing performance and less environmental problems.

Active Publication Date: 2016-06-01
JX NIPPON OIL & ENERGY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the processing performance of these lubricating oil compositions is insufficient, and due to the hardness of materials in recent years, the increase in plasticity, and the improvement in processing efficiency, etc., tool life and processing accuracy during cutting processing have decreased, and plastic processing Material breakage, tool damage, etc.

Method used

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  • Lubricating oil composition for metal working
  • Lubricating oil composition for metal working
  • Lubricating oil composition for metal working

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1 and comparative example 1

[0115] Table 1 shows the compounding amounts and properties of various lubricating base oils and additives. The added amount (% by mass) of each additive is based on the total amount of the lubricating oil composition. For each of the obtained compositions, processability was evaluated by a tapping test.

[0116] (a1) Di-t-octyl polysulfide (sulfur content: 33.5% by mass, ratio of sulfur bridging number 4 or more: 35 mol%), (a2) di-t-octyl polysulfide (sulfur content: 31% by mass , the presence ratio of 4 or more sulfur bridging numbers: 15 mol %) and (a3) ​​di-t-octyl polysulfide (sulfur content: 20 mass %, the presence ratio of 4 or more sulfur bridging numbers: 35 mol %) are commercially available sale.

[0117] (A1-1) Di-tert-octyl polysulfide (sulfur content: 37% by mass, presence ratio of sulfur bridging number 4 or more: 70 mol%), (A1-2) di-tert-octyl polysulfide (sulfur content : 37% by mass, presence ratio of 4 or more sulfur bridges: 70 mol %) and (A1-3) di-second...

Embodiment 2 and comparative example 2

[0121] Table 2 shows the compounding amounts and properties of various lubricating base oils and additives. The blending amount (mass %) of the base oil and the addition amount (mass %) of each additive are based on the total amount of the lubricating oil composition.

[0122] For each of the obtained compositions, processability was evaluated by a tapping test and a copper plate corrosion test.

[0123] The sulfurized esters A and B are obtained by sulfurizing methyl linoleate or ethyl linoleate to obtain sulfurized esters, and extracting the sulfurized esters with a silica gel-based gel chromatography. In the extracted portion, the content of the compound having a sulfur bridging number of 3 or more was less than 5% by mass based on the sulfur element content.

[0124] [Table 2]

[0125]

Embodiment 3 and comparative example 3

[0127] Table 3 shows the compounding amounts and properties of various lubricating base oils and additives. The blending amount (mass %) of the base oil and the addition amount (mass %) of each additive are based on the total amount of the lubricating oil composition.

[0128] In addition, the lubricating oil composition described in Comparative Example 3-4 is a lubricating oil composition of the present invention, and is given as a comparative example for showing the effect of adding the component [A3].

[0129] For each of the obtained compositions, a threading test and a turbidity evaluation test were performed. Three kinds of sulfurized ester compounds were prepared by the following methods.

[0130] [A2-3]: Cyclic sulfide esters represented by formulas (1) and (2) (R 1 , R 2 =CH3 , a+b=12, c+d=11, the mixing ratio is 50:50 in terms of mass ratio)

[0131] 150 g of silica gel was plugged into the glass tube, and then 1.5 g of sulfurized ester (M10 manufactured by DOG C...

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Abstract

Provided is a lubricating oil composition for metal working, with which it is possible to achieve improved working efficiency and improved tool life, and which is an environmentally-friendly product containing no chlorine, wherein the lubricating oil composition for metal working contains a lubricating oil base oil, (A) a sulfate ester represented by a predetermined formula and / or a dialkylpolysulfide in which 50 mol% of the sulfur has 4 or more crosslinks, and (B) a metallic cleaner having a metal ratio of 6 or greater.

Description

technical field [0001] The present invention relates to a chlorine-free lubricating oil composition for metalworking. Background technique [0002] Conventionally, various compositions have been used in metalworking such as cutting and plastic working, and as oil agents for metalworking, chlorine-based extreme pressure agents, which are excellent in workability-improving effects and are inexpensive, are frequently used in particular. [0003] However, in recent years, lubricating oils compounded with chlorine-based extreme pressure agents have been pointed out to have problems such as generation of dioxins during incineration, corrosion and damage to incinerators, and some organochlorine compounds have been reported to be carcinogenic. Therefore, the development of chlorine-free metalworking oils has been demanded. As metalworking oils that do not contain chlorine, metalworking oils using sulfur-based materials such as polysulfides, sulfurized grease, calcium sulfonate, and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/04C10M135/10C10M135/22C10M159/24C10N10/04C10N30/00C10N40/20
CPCC10M163/00C10M2205/028C10M2219/042C10M2219/044C10M2219/046C10M2219/08C10M2219/102C10N2040/20C10N2040/22C10N2040/24
Inventor 辻本铁平八木下和宏千本木纪夫高木智宏
Owner JX NIPPON OIL & ENERGY CORP
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