KR101162716B1 - A water-soluble lubricant oil composition for pressing and drawing of metals - Google Patents

Abstract

PURPOSE: A water-soluble molding oil composition for blanking metal materials is provided to obtain excellent processability, anti-lipid property, and corrosion resistance when compared to conventional oil-soluble molding oils. CONSTITUTION: A water-soluble molding oil composition for blanking metal materials for producing metal cases or frames for cellular phones contains the following: 50-70wt% of paraffinic base oil; 5-15wt% of an extreme-pressure additive containing a chlorine compound, a sulfur compound, and a phosphorus compound in a weight ratio of 2.5:1:1; 20-30wt% of an emulsifier containing 2-ethylhexyl oleate, noylphenyl ether, and PEG esters in a weight ratio of 10:3:12; and 2-6wt% of anti-rust additive. The water-soluble molding oil is for reducing heat from metal frames or circuits of electronic components and power LEDs.

Description

Water-soluble molding oil composition for punching metallic materials {A WATER-SOLUBLE LUBRICANT OIL COMPOSITION FOR PRESSING AND DRAWING OF METALS}

The present invention is used to protect the metal base material and the molding tool when forming a metal case and frame for heat sinks or a cell phone for heat sink that lowers the heat appearing in metal frames and circuits such as electronic components and power LEDs by pressing or punching A water-soluble molding oil composition for punching metal materials.

High clean metal materials used in vacuum, high strength metal materials (such as stainless steel and Ni alloy steel) that require precision machining, metal frames used inside electronic parts and power LEDs, and aluminum or mobile phones for heat sinks that lower heat generated in circuits. In order to mold the metal case for high speed into a certain shape, punching or pressing should be done. In this case, in order to press work, molding oil (Drawing or Press Oil) must be used to protect expensive molds and to facilitate the processability of the metal material to be processed.

Currently, most molding oils mainly use silicone-based or hydrocarbon-based oils having good processability and lubricity, but a degreasing process is required to remove residual oils on the processed metal surface after molding. This causes the quality and work defects in the post process such as surface processing and coating when the molding oil remains on the metal surface after the degreasing process, and also causes environmental problems.

However, the degreasing solution used in the degreasing process generally uses organic chemicals such as TCE (trichloroethylene), organic hydrocarbon-based emulsions or aqueous degreasing solutions. Most TCEs are colorless and have a similar smell to chloroform. It is a liquid, which is toxic when in gaseous state, dangerous when in contact with skin or eyes, and when inhaling vapors. It is a toxic substance that causes headaches, dizziness and unconsciousness. Known as

In addition, organic hydrocarbon-based emulsions, which can replace TCE, generally have a low flash point and can always be exposed to fire hazards during operation, odors cause workers' occupational diseases, and additional investment in environmental safety and disaster prevention facilities. There is a disadvantage to be taken.

Recently, environmentally friendly and stable water-based cleaners that overcome the disadvantages of TCE or organic hydrocarbon-based emulsions have been in the spotlight. However, water-based cleaners require expensive cleaning equipment and are more expensive than organic-based (TCE or hydrocarbon-based) cleaners. As high as ~ 3 times, there is a problem in that the competitiveness is lowered in manufacturing cost.

In addition, an additional molding oil material cost is inevitably increased due to the need for a separate molding oil dissolved in an aqueous detergent instead of the silicone-based molding oil.

Therefore, the degreasing process applied when the metal material is punched or pressed using existing molding oil is a serious problem that the competitiveness of the product is deteriorated due to cost increase, productivity decrease, waste water generation, or environmental pollution. have.

Therefore, recently, water-soluble molding oils that can be easily removed by replacing the existing cleaning agent having many problems in the degreasing process with water have been developed. In the case of water-soluble molding emulsion is generally environmentally friendly and can contribute to cost reduction, there is a lot of interest in development.

However, in the case of water-soluble molding oil, it is necessary to improve the disadvantages of degreasing and anti-rusting properties by containing components other than oil components in order to be washed in water, and having lower processability than oil-soluble molding oil, and degreasing metal surface with water after molding. There is.

In order to solve the above problems, the present inventors use a synthetic ester in combination with a base oil consisting of mineral oil or oil in a specific blending ratio to impart emulsifiability that can be dissolved in water, and as an extreme pressure additive such as chlorine, sulfur and phosphorus compounds. It was to develop a water-soluble molding oil for punching metal material made by the addition of extreme pressure additives and rust inhibitor selected from the group consisting of.

Accordingly, it is an object of the present invention to provide a water-soluble molding oil composition for punching out metallic materials, which is equivalent to or superior in processability, degreasing property and rust resistance as compared to existing oil-soluble molding oils.

In order to achieve the above object, the present invention is a mineral oil or oil oil lubricating base oil 50 to 70% by weight, 5 to 15% by weight extreme pressure additive selected from the group consisting of chlorine, sulfur and phosphorus compounds, 20 to 30% by weight emulsifier and It provides a water-soluble molding oil composition for punching metal material comprising 2 to 6% by weight of the rust inhibitor.

Hereinafter, the present invention will be described in detail.

At this time, if there is no other definition in the technical terms and scientific terms used, it has a meaning commonly understood by those of ordinary skill in the art.

Repeated descriptions of the same technical constitution and operation as those of the conventional art will be omitted.

The present invention provides an emulsifiability soluble in water by using a synthetic ester in combination with a base oil consisting of mineral oil or an oil based on a specific blending ratio, and an extreme pressure additive and an antirust agent selected from the group consisting of chlorine, sulfur and phosphorus compounds, which are extreme pressure additives. By developing a water-soluble molding oil for punching metal material made by adding a, it is possible to degrease the metal base material even by washing with water while maintaining the processing quality equal to or higher than the existing oil-soluble molding oil.

In addition, the present invention is to replace the harmful cleaning agent, such as water-based or TCE with water, it is possible to reduce the cost and environmental pollution.

Lubricant base oil used in the present invention serves to smooth the workability while reducing frictional heat and wear generated between the metal base material and the metal tool during metal processing using mineral oil or oil-based oil.

Specifically, in the present invention, the mineral oil may be purified oil or the like obtained by distillation of paraffinic crude oil or intermediate crude oil under atmospheric distillation or atmospheric distillation and distillate oil obtained by distillation under reduced pressure from the remaining oil under reduced pressure. It is preferable to use the above.

Oily oil in the present invention can be used higher fatty acids such as oleic acid, stearic acid, higher alcohols such as oleyl alcohol, methyl ester and ethyl esters and fats and oils, specifically, soybean oil which is a natural fatty oil having 8 to 22 carbon atoms, Vegetable oils such as rapeseed oil, olive oil, sunflower oil, castor oil and palm oil; And animal oils such as fats and oils; Synthetic ethers such as neopentyl glycol dioleate, trimethylolpropane trioleate, pentaerythritol tetraoleate, propylene glycol dioleate, and ricinoleic acid condensate; It is preferable to use vegetable oil methyl ester, such as soybean oil and a rapeseed oil. At this time, the lubricating base oil used in the present invention preferably has a viscosity index of 120 or more in consideration of stability to heat.

In addition, the lubricant base oil 100% by weight based on the water-soluble molding oil composition for punching metal material according to the present invention does not sufficiently exhibit the above-mentioned lubrication role when used less than 50% by weight, the lubrication role when used in excess of 70% by weight In order to increase the degreasing effect when washed with water, it is preferable to use within the above 50 to 70% by weight.

In addition, the extreme pressure additive in the present invention serves to reduce the friction and wear by forming a film on the friction surface between the metal by a chemical reaction, using an extreme pressure additive of chlorine, sulfur and phosphorus compounds. Specifically, chlorine compounds, such as chlorinated hydrocarbon and chlorinated oils and fats; Sulfur compounds such as sulfides, sulfoxides, sulfones, thiophosphinates, thiocarbonates, dithio carbamates, alkylthiocarbamoyls, fats and oils, sulfurized fats and oils and olefins sulfide; And phosphorus compounds such as phosphate ester, phosphite ester, phosphate ester amine salt and phosphite ester amine salt; And the like.

At this time, the extreme pressure additive in the oil composition according to the present invention, if less than 5% by weight based on 100% by weight, the extreme pressure is lowered, and when used in excess of 15% by weight, sufficient use of other essential components in preparation for the extreme pressure effect Since it is not possible, it is preferable to use within the range of 5 to 15% by weight.

More preferably, the extreme pressure additive according to the present invention has a chlorine compound: sulfur compound: phosphorus compound in a weight ratio of 2.5: 1: 1.

In the present invention, the emulsifier serves to degrease the lubricating base oil even after washing with water in the degreasing process by emulsifying the lubricating base oil, polyoxyethylene, such as polyoxyethylene alkylphenyl ether, polyoxyethylene mono fatty acid ester; Polyhydric alcohols such as sorbitan mono fatty acid ester; Alkylol amides such as fatty acid diethanol amide; It is preferable to use nonionic emulsifiers, such as these. However, the emulsifier in the present invention is not limited to the aforementioned nonionic emulsifier, and any emulsifier such as an anionic emulsifier may be used as long as it meets the object of the present invention. At this time, when the emulsifier in the composition of the present invention is used less than 20% by weight, the degreasing effect when the ultrasonic cleaning with water in the degreasing process is reduced, when used in excess of 30% by weight does not sufficiently use other essential components, It is preferable to use within the range of 20 to 30% by weight.

In the present invention, the anti-corrosive agent refers to a component for inhibiting the oxidation and metal corrosion of the composition of the present invention, and antioxidants such as amines, phenols, sulfur human compounds, carboxylic acids, sulfonates, alcohols, nitrites, and phosphate compounds. Corrosion inhibitors, such as these, etc. can be used, Specifically, 2, 6- di- t- butyl- p- cresol, dioctyl diphenylamine, triethanolamine, dithiophosphate zinc, alkyl succinic acid, alkenyl succinic acid, carboxylic acid ester, Calcium sulfonate, barium sulfonate, sodium sulfonate, alcohols, phosphoric acid, benzotriazole, imidazoline and the like. At this time, in the composition of the present invention, when the rust inhibitor is used less than 2% by weight based on 100% by weight of the total composition, the above-described effect is reduced, when used in excess of 6% by weight does not sufficiently use other essential components, It is preferable to use within the range of 2-6 weight% mentioned above.

On the other hand, the oil composition according to the present invention can be used in the process of punching or pressing iron, aluminum, copper nickel and alloy steel mixed with these.

In addition, it is preferable that the metal material processed by the oil composition of the present invention is washed with water by applying ultrasonic waves during the degreasing step.

As described above, the water-soluble molding oil composition of the present invention can adjust the density and viscosity almost similar to the standard of the existing oil-soluble molding oil to meet the process conditions currently applied, and maintain the processing quality equal to or higher than the existing molding oil In the meantime, the metal base material can be degreased by washing with water.

In addition, the present invention is to reduce the cost by replacing the water or harmful cleaning agents such as TCE.

In addition, the present invention is to process the metal base material with a water-soluble molding oil, it is possible to shorten the process by being able to switch directly to the barrel process without degreasing process.

Figure 1 is applied to a water-soluble molding oil according to a preferred embodiment of the present invention in a plate drawing process, after degreasing with water using ultrasonic waves in a metal workpiece to measure the residual oil results through GC / MS .
FIG. 2 is a view illustrating a residual oil result through GC / MS after applying water-soluble molding oil to a deep drawing process according to a preferred embodiment of the present invention, followed by degreasing with water using ultrasonic waves in a metal workpiece. It is measured.
Figures 3 and 4 shows a case of a bad case of the conventional metal-based base material by applying a conventional oil-soluble emulsion, then degreased with TCE (trichloroethylene) and foreign matter generated on the metal surface.
Figure 5 shows that after applying the water-soluble molding oil according to a preferred embodiment of the present invention in a plate drawing process, the surface and the edge of the processing after the degreasing process by an optical microscope.
Figure 6 shows that after applying the water-soluble molding oil according to a preferred embodiment of the present invention in a plate drawing process, the process surface and the edge after the degreasing process by electron microscopy.
Figure 7 shows that after applying the water-soluble molding oil according to a preferred embodiment of the present invention in the Deep Drawing process, the processing surface and the edge after the degreasing process confirmed with an optical microscope.
Figure 8 shows that after applying the water-soluble molding oil according to a preferred embodiment of the present invention in a deep drawing process, the surface and the edge of the processing after the degreasing process confirmed by electron microscopy.

Hereinafter, the present invention will be described in more detail with reference to the following examples. However, this is intended to facilitate an easier understanding of the present invention, but is not intended to limit the present invention through these.

[Example]

In this embodiment, paraffin base oil, synthetic ester, mono ester nonionic emulsifier and the like are added and mixed in the mixing ratio as shown in Table 1 below to prepare a water-soluble molding oil composition of the present invention. At this time, the unit represents weight%.

Usage Product name or ingredient name CAS NO. Example 1 Example 2 Example 3 Example 4 Example 5
Lubricant base oil Severely Hydrotreated Heavy Paraffinic Distillate
64742-54-7
61.9
65
55
50
70



Extreme pressure
additive Chlorinated Paraffin
(52% chlorine)
63449-39-8
5
3
5
5
2 TPS-20
(Di-tert-dodecyl Polysulfides)
68425-15-0
2
3
5
4
1.5 LUBROPHOS LB 400E
(POLYOXYETHYLENE OCTADECENYL ETHER PHOSPHATE)
39464-69-2
2
3
5
5
1.5

Emulsifier 2-EthylHexyl Oleate 26399-02-0 10 10 8 10 8 NP-4
(polyoxyethylene Nonylphenyl ether)
26027-38-3
3
3
5
10
5 PEG 300 Mono Oleate 9004-96-0 12 10 12 10 10

Rust preventive 2,2 '-[[(methyl-1H-benzotriazol-1-yl) methyl] imino] bis Ethanol
80584-88-9
0.4
0.5
One
2
0.5 Oleyl amide 94554-98-0 3 2 3 2 One Triethanolamine 102-71-6 0.7 0.5 One 2 0.5 synthesis 100 100 100 100 100

* LUBRHOOHOS is a trade name of Rhodia, France.

Experimental Example 1 Oil Washing Force Experiment

1. Plate Drawing

In the press working of the metal base material, it was processed using the water-soluble molding oil composition of the present invention prepared in Example 1 through a conventional plate drawing production line.

Then, the processed metal base material was subjected to a water washing process ultrasonically using water, and the oil remaining in the processed metal base material was analyzed by GC / MS.

As a result, as shown in Figure 1, it was confirmed that the water-soluble molding oil of the present invention does not remain in the processed metal base material when washed with water.

2. Deep Drawing

In the press working of the metal base material, it was processed using the water-soluble molding oil composition of the present invention prepared in Example 1 through a conventional deep drawing production line.

Then, the processed metal base material was subjected to a water washing process ultrasonically using water, and the oil remaining in the processed metal base material was analyzed by GC / MS.

As a result, as shown in Figure 2, it was confirmed that the water-soluble molding oil of the present invention does not exist at all in the processed metal base material even when washed with water.

Experimental Example 2 Processability Experiment

In this experiment, to determine whether a defect may occur due to the formation of foreign substances on the electrode surface after processing the metal base material, and to check whether the defect occurs through a microscope after the metal base material processing. 3 and 4 shows a case of a bad failure occurred by applying a conventional oil-based emulsion to the metal base material after the normal and deep processing, degreasing with TCE (trichloroethylene) and foreign matter on the metal surface.

1. Plate Drawing

In the press working of the metal base material, it was processed using the water-soluble molding oil composition of the present invention prepared in Example 1 through a conventional plate drawing production line.

Then, the surface and the edge portion of the processed metal base material were observed by light microscope and electron microscope (SEM / EDS).

As a result, as shown in Figures 5 and 6, it was observed that the metal base material processed with the water-soluble molding oil of the present invention is free of surface xanthan and edges.

2. Deep Drawing

In the press working of the metal base material, it was processed using the water-soluble molding oil composition of the present invention prepared in Example 1 through a conventional deep drawing production line.

Then, the surface and the edge portion of the processed metal base material were observed by light microscope and electron microscope (SEM / EDS).

As a result, as shown in Figures 7 and 8, the metal base material processed with the water-soluble molding oil of the present invention was confirmed that the surface residues and the edges of the edges were not observed to clean processing.

As described above, it was found that the water-soluble molding oil composition according to the present invention has good workability, such as no foreign matter and edges on the electrode surface after punching, compared to existing oil-soluble oils.

In addition, after applying the water-soluble molding oil composition according to the present invention to the metal base material, it was confirmed that the residual oil is cleaned by a water washing (ultrasound) process.

Claims (4)

50 to 70% by weight of paraffinic base oil, chlorine compound: sulfur compound: 5 to 15% by weight of extreme pressure additive consisting of 2.5: 1: 1 phosphorus compound by weight, 2-ethylhexyl oleate: nonyl Phenyl ether: A metal frame for electronic parts and power LEDs comprising 20 to 30% by weight of an emulsifier consisting of 10: 3: 12 and 2 to 6% by weight of a rust preventive agent based on weight by polyethylene glycol esters (PEG Esters) And a water-soluble molding oil composition for punching metal materials of a metal case and frame for a heat sink or a heat sink to lower heat appearing in a circuit. delete delete delete

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