A kind of volatile lubricating oil for machining metals
The invention belongs to lubricating oil composition, exactly, is a kind of volatile lubricating oil for machining metals.
The ductility of non-ferrous metal aluminium, copper and alloy thereof is good, will hang down concerning relative ferrous metal of the requirement of lubricant and stainless steel, but corrodibility is had relatively high expectations.The lubricant of industrial normal use mainly contains machinery oil, vegetable and animals oils or machinery oil and is aided with additive.Though these oil can satisfy the requirement of lubricated aspect, because viscosity is big, volatility is poor, and cooling performance is low, thereby process velocity and processing work surface clearness are all had disadvantageous effect.In order to clean the processing work surface, to use solvent cleaning toward contact, reduced production efficiency, increased facility investment.In order to ensure the surface clearness of processing work, adapt to the lubricating requirement of novel high speed pressing equipment, offshore company takes the lead in developing novel volatile-type non-ferrous metal aluminium, copper and alloy sheets thereof, foil punching oil, as the RF270 of Shell Co. Ltd's production.The RF270 outward appearance is a white, and the smell gentleness has good lubricating property and antiseptic property, but security and versatility are not really desirable.
Domestic similar patent application has 90104959,90110038 etc.90104959 consist of wherein: 3~40%, No. 360 pressed oils 45~84% of medium viscosity mineral oil, nontoxic extreme pressure agent 0.3~11%, nontoxic oiliness improver 1.7~5%, defoamer 0.001~0.01%.This prescription volatility and versatility are relatively poor.
90110038 composed as follows: molecular weight a.0.5~1.5% is 5~200,000 polyacrylamides; B.0.5~2% aliphatic alcohol polyethenoxy phosphate kalium salt; C.1.5~3% alkylphenol polyoxyethylene; D.1~1.3% borax; E.1~3% trolamine, surplus is a water.The antiseptic property of this prescription is relatively poor.
The objective of the invention is to overcome the defective of above-mentioned prior art, a kind of volatile lubricating oil for machining metals with good security, preservative property, oilness, wetting ability and versatility is provided.
Consisting of of volatile lubricating oil for machining metals provided by the invention: with the lubricating oil gross weight is benchmark, a.90.5~99.6 the refining narrow fraction base oil of heavy %; B.0.2~8 weigh the nontoxic oiliness improver of %; C.0.01~0.08 weigh the tensio-active agent of %; D.0.1~1.5 weigh the oxidation inhibitor of %.
Said refining close-cut fraction base oil be meant the fraction scope be no more than 50 ℃, aromaticity content less than 1%, Saybolt color greater than+25, sulphur content is less than the fraction of diesel oil of 10ppm.The content of base oil can be 90.5~99.6 heavy %, preferred 92.8~99.1 heavy %.
Said nontoxic oiliness improver is selected from Fatty Alcohol(C12-C14 and C12-C18), lipid acid or fatty acid ester, as: C
12~C
18Alcohol, C
12~C
18Acid, methyl stearate, butyl stearate, Laurate methyl, coconut oil methyl esters etc.The content of oiliness improver can be 0.2~8 heavy %, preferred 0.5~6 heavy %
Said tensio-active agent is polyxyethylated alkylphenol or fatty acid acyl amine, as lauric amide.The content of tensio-active agent can be 0.01~0.08 heavy %, preferred 0.02~0.06 heavy %.
Said oxidation inhibitor is phenol type antioxidant, as 2, and 6-di-t-butyl-4-cresols, 2,4-dimethyl-6 tert-butyl phenol, 2,6-di-tert-butylphenol and tertiary butyl mixed phenol etc.The content of oxidation inhibitor can be 0.1~1.5 heavy %, preferred 0.3~1.2 heavy %.
Volatile lubricating oil for machining metals provided by the invention has the following advantages:
(1) suitable with RF270 aspect volatility, than 90104959 good, but because of flash-point than RF270 innage, because of
And the security of using is better.
(2) aspect antiseptic property, be better than 90110038, suitable with RF270.
(3) suitable with RF270 aspect lubricity.
(4) aspect hydrophilicity, be better than 90110038 and RF270.
(5) aspect universal performance, be better than 90104959 and RF270.Oil of the present invention can be used for the pipe processing of rising of the punch process of aluminium, copper coin, foil and tubing simultaneously, and 90104959 pipes that can only be used to rise, and RF270 can only be used for punching, and the effect that is used to rise when managing is bad.
Therefore volatile lubricating oil for machining metals provided by the invention has good security, preservative property, oilness, wetting ability and versatility, and over-all properties is better than the product RF270 of Shell Co. Ltd and Chinese patent application 90104959 and 90110038.Lubricating oil provided by the invention is applicable to the punch process of aluminium, copper and alloy sheets thereof, foil, also can be used for the pipe processing technique that rises lubricated of aluminium, copper and alloy pipe thereof, and can not cause disadvantageous effect to the hydrophilic aluminium foil surface.This lubricating oil can not cause the human body skin anaphylaxis, through the small white mouse test, belongs to atomic malicious oil product.
The invention will be further described below by embodiment.
Embodiment 1
In 1225~260 ℃ of fraction treated oils of 96.5 grams, add oiliness improver butyl stearate 3.0 grams, stearic acid 1.5 grams, T501 (2,6-di-t-butyl-4-cresols) oxidation inhibitor 0.5 gram, surfactant polyoxyethylene alkyl phenol ether 0.05 gram stirs, and is lubricating oil composition of the present invention.
Embodiment 2
In the refining fraction oil of 230~275 ℃ of 95.97 grams, add the methyl stearate of 3.5 grams, the dodecoic acid acidamide surfactant that the 0.5 T501 oxidation inhibitor that restrains, 1.0 restrains stearic acid, 0.03 gram, stir, be lubricating oil composition of the present invention.
Embodiment 3
Present embodiment is the drying property test, specifically is divided into common drying test and online baking test again.
Common drying test: get φ 90mm watch-glass, take by weighing the sample of 10 ± 1 grams, put into baking oven, dried by the fire 3 minutes down at 140 ℃, three parallel samples, results averaged are done in each test.Test-results sees Table 1.
Online baking test: this method is the field drying investigation way that enterprise adopts voluntarily.Get ten condensers of dressing up with oily fins set, advance the stokehold W1 gram of weighing, the W2 gram of weighing after the cooling of coming out of the stove, calculate resid amount Δ W (gram) then:
Δ W=W1-W2 test-results sees Table 2.Table 1
| Lubricating oil |
Embodiment 1 |
Embodiment 2 |
RF270 |
| Sampling amount, g |
9.9675 |
10.0047 |
10.0213 |
| The oven dry rate, % |
5.13 |
4.65 |
4.6 |
| Flash-point, ℃ |
95 |
105 |
90 |
Table 2
| Oil product | Embodiment 1 | Embodiment 2 | RF270 |
| The average oleaginousness of condenser, g/ spare | 80.1 | 86.5 | 85.8 |
| The average oleaginousness in oven dry back, g/ spare | 0.19 | 0.32 | 0.33 |
Drying test shows that oil ratio RF270 of the present invention is good aspect volatility, but higher because of flash-point, the security of use is better.
Embodiment 4
Present embodiment is the lubricity test.Test method is: select a punch press, and in certain working hour, when relatively using different oils, the process velocity of punch press, the quantity of processing work and workpiece quality.Test-results sees Table 3.
As known from Table 3, lubricating oil provided by the invention has than the better lubricity of RF270 oil.
Table 3
| Oil product | Working hour, minute | The punch press jig frequency, inferior/minute | Produce number of packages, part |
| RF270 | 480 | 205~214 | 234 |
| Embodiment 1 | 480 | 209~215 | 238 |
| Embodiment 2 | 480 | 220 | 288 |
Embodiment 5
Present embodiment is an anti-corrosion performance test.Test method is: under 55+1 ℃,, immerses in the formation testing, takes out after 48 hours and observe, check to have or not variable color polishing aluminium sheet, copper coin well, and clean, dry then, be cooled to room temperature to weigh again, check its quality change situation.Test-results sees Table 4.
As known from Table 4, lubricating oil provided by the invention does not all have corrosion to aluminium, copper.
Table 4
| Oil product | Copper corrosion | The aluminium flake corrosion | Changes in weight before and after the test, g |
| Copper sheet | Aluminium flake |
| Embodiment 1 | Nondiscoloration | Nondiscoloration | -0.0023 | 0.0015 |
| Embodiment 2 | Nondiscoloration | Nondiscoloration | 0.0015 | 0.0009 |
Embodiment 6
Present embodiment is the universal performance test.Test method is: get embodiment 1,2 formation testings and carry out the bend pipe processing experiment on tube-bending machine, investigate the quality of processing back elbow.Test-results sees Table 5.
As known from Table 5, lubricating oil provided by the invention can be used for bend pipe processing.
Table 5
| Oil product | Bend pipe processing |
| Workpiece quality | Resid amount, g/ spare |
| Embodiment 1 | No wrinkle, leakless | 0.02 |
| Embodiment 2 | No wrinkle, leakless | 0.01 |
Embodiment 7
Present embodiment is that hydrophilicity is investigated.Promptly come each oily hydrophilicity of comparison by the oil water interfacial tension of measuring embodiment 1,2 oil and RF270 oil respectively.The interfacial tension that records is more little, and then wetting ability is good more.The results are shown in Table 6.
As known from Table 6, oil ratio RF270 oil phase of the present invention has better wetting ability.
Table 6
| Lubricating oil | Embodiment 1 | Embodiment 2 | RF270 |
| Tension force, dynes per centimeter | 2.5 | 3.6 | 23 |