EP0837744A1 - Schmierverfahren für schwere umformungen - Google Patents
Schmierverfahren für schwere umformungenInfo
- Publication number
- EP0837744A1 EP0837744A1 EP96922900A EP96922900A EP0837744A1 EP 0837744 A1 EP0837744 A1 EP 0837744A1 EP 96922900 A EP96922900 A EP 96922900A EP 96922900 A EP96922900 A EP 96922900A EP 0837744 A1 EP0837744 A1 EP 0837744A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- water
- component
- volume
- oil
- miscible
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
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- C—CHEMISTRY; METALLURGY
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- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M173/00—Lubricating compositions containing more than 10% water
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- C10M101/00—Lubricating compositions characterised by the base-material being a mineral or fatty oil
- C10M101/02—Petroleum fractions
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- C10M101/00—Lubricating compositions characterised by the base-material being a mineral or fatty oil
- C10M101/04—Fatty oil fractions
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- C10M105/00—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound
- C10M105/08—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound containing oxygen
- C10M105/32—Esters
- C10M105/34—Esters of monocarboxylic acids
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- C10M133/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing nitrogen having a carbon chain of less than 30 atoms
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/20—Metal working
- C10N2040/241—Manufacturing joint-less pipes
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/20—Metal working
- C10N2040/242—Hot working
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/20—Metal working
- C10N2040/243—Cold working
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/20—Metal working
- C10N2040/244—Metal working of specific metals
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/20—Metal working
- C10N2040/244—Metal working of specific metals
- C10N2040/245—Soft metals, e.g. aluminum
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/20—Metal working
- C10N2040/244—Metal working of specific metals
- C10N2040/246—Iron or steel
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/20—Metal working
- C10N2040/244—Metal working of specific metals
- C10N2040/247—Stainless steel
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2050/00—Form in which the lubricant is applied to the material being lubricated
- C10N2050/01—Emulsions, colloids, or micelles
Definitions
- the invention relates to a method for lubricating workpieces made of metal, in particular steel or aluminum, for forming processes by drawing or deep drawing.
- a method for lubricating workpieces made of metal, in particular steel or aluminum for forming processes by drawing or deep drawing.
- an inhomogeneous mixture prepared immediately before the forming operation is applied, the essential components of which are a concentrate of a water-miscible cooling lubricant emulsion and a non-water-soluble visual cutting oil.
- lubricants are required, the main purpose of which is to reduce the friction between the tool and the workpiece.
- An overview of the shaping metalworking processes and the aids usually used for this purpose can be found, for example, in Ullmann's Encyclopedia of Industrial Chemistry, 5th Ed., Vol. A15, 479-486 (1990).
- the spectrum of the forms of supply of the auxiliaries in question ranges from oils to oil-in-water emulsions to aqueous solutions.
- Other components such as, for example, viscosity regulators, defoamers or corrosion inhibitors, are usually added to the base liquids.
- Lubricants for example so-called "EP additives"
- EP additives are still common, especially in oil-based systems.
- the use of emulsifiers is generally necessary for the formation of emulsions. In many cases, the agents are also stabilized by biocides.
- oils Today paraffin or mineral oils are preferably used as oil components.
- synthetic lubricants such as polyolefins can also be used. Ecological advantages can be achieved when using oils on a native basis, with for example in the form of native triglycerides or modification products thereof, wax esters, fatty acid esters of polyols or longer-chain dialkyl ethers.
- the oils are used as such in the form of so-called "non-water-miscible" cooling lubricants. You then have the advantage of not chemically attacking metals and providing good corrosion protection. The good lubricating effect is also an advantage.
- the main disadvantage lies in the low heat capacity of non-water-miscible cooling lubricants, so that the heat generated during the forming processes is dissipated only with difficulty.
- non-water-miscible cooling lubricants also referred to as "cutting oils” or “metalworking oils”
- cutting oils or “metalworking oils”
- metalworking oils water-miscible cooling lubricants which come on the market in the form of a low-water or water-free concentrate and which are mixed by users with water in a cooling lubricant emulsion be transferred in the form of an oil-in-water emulsion.
- approximately 5% aqueous emulsions are produced.
- the advantage of this type of cooling lubricant is the good cooling effect, which is based on the thermal properties of the water.
- the lubricating effect caused by the oil content of the emulsion is sufficient for most machining processes in metal-cutting manufacturing.
- suitable corrosion inhibitors it must be ensured that the corrosion of the metallic workpieces, which is possible due to the presence of the aqueous phase, does not occur.
- This object is achieved by a method for lubricating metal workpieces for forming processes by drawing, deep-drawing or cold extrusion, characterized in that an inhomogeneous mixture is formed from
- the invention is therefore mainly based on mixing a non-water-miscible cutting oil with the concentrate of a water-miscible cooling lubricant emulsion, contrary to the usual teachings in practice. This has not been considered so far, since a stable homogeneous mixture cannot be obtained from these two components, but rather a phase separation is observed on standing. Accordingly, according to the invention, it is necessary for the water-miscible cooling lubricant emulsion and the water-immiscible cutting oil to be introduced by mechanical energy input, for example by stirring, mix intensively with one another and keep in the inhomogeneous mixture.
- inhomogeneous mixture here means that the cutting oil is not emulsified into the water-miscible cooling lubricant emulsion, but is mechanically distributed therein with such a droplet size that it rapidly changes, for example within half an hour, after the end of the mechanical mixing separated phase separated again.
- the lubricating effect required in the context of the task according to the invention is only achieved if the cutting oil is present in the mechanical mixture with a drop size such that a phase separation occurs spontaneously after the mechanical force has ended.
- the process according to the invention can therefore be carried out by mixing the above components a) and b), if appropriate together with the other components c) and d), by stirring in a mixing container and, with the stirrer running, via a removal line to the factory piece.
- the individual components can be fed to a multi-substance nozzle and sprayed onto the workpiece together.
- a two-component nozzle is sufficient for this purpose, through whose one supply line the water-miscible components and through the second supply line the non-water-miscible components are supplied.
- component a) can be an emulsion concentrate which is composed of 30 to 50% by weight of an oil component, preferably mineral oil, which if desired contains sulfurized fractions, and 10 to 20 wt .-% water.
- the rest of 100% by weight consists of emulsifiers, preferably based on fatty alcohol ethoxylates, of corrosion inhibitors, preferably based on amine soaps, ethanolamine soaps and / or ethanolamides, and, if appropriate, of further auxiliaries or additives known for this product group in the prior art Active ingredients.
- a non-water-miscible cutting oil is suitable as component b).
- oils on a native basis, in particular on an ester basis.
- these are native triglycerides or modification products thereof, wax esters and fatty acid esters of monoalkanols with 4 to 12 carbon atoms, for example tallow fatty acid ethylhexyl ester or transesterified rapeseed oil, and fatty acid esters of polyols, in particular trimethylol propane being used as the polyol component.
- Component b) can also be mixtures of such oils.
- the oils can contain additional auxiliaries, in particular EP additives, for example in the form of sulfurized compounds, antioxidants and corrosion inhibitors.
- the problem was solved by producing an inhomogeneous mixture of the following components in a batch container with stirring and applying it to the material to be formed in an amount of about 6 to 8 ml per wheel disc: a) 50% by volume of a water-miscible concentrate of a chlorine-free cooling lubricant emulsion consisting of 40% by weight of mineral oil, 40% by weight of emulsifiers based on fatty alcohol ethoxylates and corrosion inhibitors and 20% by weight of water (P3-multan R 81-3, Henkel KGaA, Dusseldorf),
- the tool life could be increased more than a hundredfold.
- this mixture was left to stand, the phases separated within 10 minutes.
- the formed wheels were subsequently rinsed off with a water-mixed cooling lubricant emulsion, the concentrate / cutting oil mixture easily emulsified into them.
Landscapes
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Emergency Medicine (AREA)
- Engineering & Computer Science (AREA)
- Lubricants (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19525407 | 1995-07-12 | ||
DE19525407A DE19525407A1 (de) | 1995-07-12 | 1995-07-12 | Schmierverfahren für schwere Umformungen |
PCT/EP1996/002904 WO1997002909A1 (de) | 1995-07-12 | 1996-07-03 | Schmierverfahren für schwere umformungen |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0837744A1 true EP0837744A1 (de) | 1998-04-29 |
EP0837744B1 EP0837744B1 (de) | 1999-04-07 |
Family
ID=7766653
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96922900A Expired - Lifetime EP0837744B1 (de) | 1995-07-12 | 1996-07-03 | Schmierverfahren für schwere umformungen |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0837744B1 (de) |
DE (2) | DE19525407A1 (de) |
WO (1) | WO1997002909A1 (de) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19715408C2 (de) * | 1996-04-13 | 2002-09-19 | Vaillant Joh Gmbh & Co | Verfahren zur Vorbehandlung zu schneidender, zu stanzender oder zu verformender, insbesondere tiefzuziehender, metallischer Teile |
DE19703085A1 (de) | 1997-01-29 | 1998-07-30 | Henkel Kgaa | Kühlschmierstoffemulsion |
GB2351923A (en) * | 1999-07-12 | 2001-01-17 | Perkins Engines Co Ltd | Self-cleaning particulate filter utilizing electric discharge currents |
ES2172412B1 (es) * | 2000-07-21 | 2003-10-01 | Nueva Fl Iberica S A | Procedimiento para la preparacion de fluidos lubrificantes de corte. |
GB0321210D0 (en) | 2003-09-10 | 2003-10-08 | Btg Int Ltd | Apparatus and method for dispensing foam |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3429815A (en) * | 1965-10-08 | 1969-02-25 | Bethlehem Steel Corp | Rolling oils |
US3444080A (en) * | 1967-04-14 | 1969-05-13 | Shell Oil Co | Lubricant for rolling metals |
US3726799A (en) * | 1971-05-18 | 1973-04-10 | Kaiser Aluminium Chem Corp | Water based rolling lubricant |
DE2362051A1 (de) * | 1973-12-13 | 1975-06-19 | Hufnagl Walter | Verfahren zum herstellen von bewehrungsstaehlen (bewehrungsstaeben) |
-
1995
- 1995-07-12 DE DE19525407A patent/DE19525407A1/de not_active Withdrawn
-
1996
- 1996-07-03 EP EP96922900A patent/EP0837744B1/de not_active Expired - Lifetime
- 1996-07-03 DE DE59601619T patent/DE59601619D1/de not_active Expired - Fee Related
- 1996-07-03 WO PCT/EP1996/002904 patent/WO1997002909A1/de active IP Right Grant
Non-Patent Citations (1)
Title |
---|
See references of WO9702909A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO1997002909A1 (de) | 1997-01-30 |
EP0837744B1 (de) | 1999-04-07 |
DE59601619D1 (de) | 1999-05-12 |
DE19525407A1 (de) | 1997-01-16 |
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