EP0291102A2 - Fluides aqueux pour couper du métal en enlevant des copeaux - Google Patents

Fluides aqueux pour couper du métal en enlevant des copeaux Download PDF

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Publication number
EP0291102A2
EP0291102A2 EP88110542A EP88110542A EP0291102A2 EP 0291102 A2 EP0291102 A2 EP 0291102A2 EP 88110542 A EP88110542 A EP 88110542A EP 88110542 A EP88110542 A EP 88110542A EP 0291102 A2 EP0291102 A2 EP 0291102A2
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EP
European Patent Office
Prior art keywords
metalworking
metalworking fluids
salt
contain
und
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.)
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Application number
EP88110542A
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German (de)
English (en)
Other versions
EP0291102A3 (fr
Inventor
Sergio Dr. Del Ross
Renate Dr. Del Ross
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Individual
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Individual
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Publication of EP0291102A2 publication Critical patent/EP0291102A2/fr
Publication of EP0291102A3 publication Critical patent/EP0291102A3/fr
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    • C10M173/00—Lubricating compositions containing more than 10% water
    • C10M173/02—Lubricating compositions containing more than 10% water not containing mineral or fatty oils
    • C—CHEMISTRY; METALLURGY
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    • C10M125/00—Lubricating compositions characterised by the additive being an inorganic material
    • C10M125/24—Compounds containing phosphorus, arsenic or antimony
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    • C10M125/00—Lubricating compositions characterised by the additive being an inorganic material
    • C10M125/26—Compounds containing silicon or boron, e.g. silica, sand
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    • C10M129/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen
    • C10M129/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen having a carbon chain of less than 30 atoms
    • C10M129/04—Hydroxy compounds
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    • C10M129/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen
    • C10M129/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen having a carbon chain of less than 30 atoms
    • C10M129/04—Hydroxy compounds
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    • C10M129/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen
    • C10M129/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen having a carbon chain of less than 30 atoms
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    • C10M145/00—Lubricating compositions characterised by the additive being a macromolecular compound containing oxygen
    • C10M145/18—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M145/24—Polyethers
    • C10M145/26—Polyoxyalkylenes
    • C10M145/28—Polyoxyalkylenes of alkylene oxides containing 2 carbon atoms only
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    • C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
    • C10M2201/02—Water
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    • C10M2201/087—Boron oxides, acids or salts
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    • C10M2207/026—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings with tertiary alkyl groups
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    • C10M2207/027—Neutral salts thereof
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    • C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
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    • C10M2229/02—Unspecified siloxanes; Silicones
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    • C10N2040/24—Metal working without essential removal of material, e.g. forming, gorging, drawing, pressing, stamping, rolling or extruding; Punching metal
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    • C10N2050/00—Form in which the lubricant is applied to the material being lubricated
    • C10N2050/01—Emulsions, colloids, or micelles

Definitions

  • the metalworking fluids for cutting work consist of mineral oils, vegetable oils and / or synthetic oils. They are used per se with or without specific additives, such as high-pressure additives ("extreme pressure" or EP), rust inhibitors, antifoam agents, dyes and / or odorants, or in the form of emulsions of oil-in-water.
  • specific additives such as high-pressure additives ("extreme pressure" or EP), rust inhibitors, antifoam agents, dyes and / or odorants, or in the form of emulsions of oil-in-water.
  • liquids are used less frequently, such as water-in-oil emulsions and chemical solutions of special synthetic water-soluble lubricants, in general polyalkylene glycols (also called polyether oils), for example ethylene oxide / propylene oxide polyethers or ethylene oxide / propylene oxide / tetrahydrofuran polyethers, the proliferation of the latter being hampered by the high outlay involved.
  • polyalkylene glycols also called polyether oils
  • polyether oils for example ethylene oxide / propylene oxide polyethers or ethylene oxide / propylene oxide / tetrahydrofuran polyethers
  • borax mineral oils and fats which contain borate in suspension as an additive
  • synthetic (organic) lubricants such as polyalkylene glycols, and / or other solvents, such as alcohols (German patents 1 903 453 and 1 903 455) for metal cutting.
  • the borax is always used together with mineral oils (such as from petroleum), vegetable oils or synthetic oils (such as polyalkylene glycols).
  • various boric acid esters in metalworking fluids, but only together with oils in which they are emulsified and only to prevent bacterial reactions.
  • the invention has for its object, while eliminating the disadvantages of the known lubricants associated with little effort aqueous metalworking fluids for cutting operations with superior lubrication properties and other essential properties for metalworking for cutting operations, all of whose components are water-soluble and which are free of mineral lubricants and vegetable and synthetic oils are to be created.
  • additives customary in metalworking fluids [component (e) c)] also expressly excludes conventional polyalkylene glycols.
  • the most common additives (components) (c) in metalworking fluids are 1 or more anti-rust agents, other anti-corrosion agents, anti-foaming agents, antibacterial agents, dye (s) and / or odor (e ) in question.
  • the metalworking fluids according to the invention advantageously contain as simple salt (s) and // or double salt (s) [component (s) a)] [a] borate (s) and / or phosphate (s). They preferably contain borax as a [single] salt and / or sodium ammonium hydrogen phosphate as a [double] salt [component (s) a)]. Borax melts at 350 to 450 ° C and becomes a glassy, anhydrous mass that has its boiling point at 1,500 ° C. In the various metalworking fluids according to the invention, borax is preferred to other substances because it is a very good anticorrosive agent and good antirust agent in aqueous solutions is medium. It is therefore possible to dispense with an anti-rust additive in the metalworking liquids according to the invention under special conditions.
  • the metalworking fluids according to the invention do not contain the salt, such as borax, together with mineral, vegetable and / or synthetic lubricants and therefore not in the oily phase but in an aqueous liquid.
  • the salt such as borax
  • the metalworking fluids according to the invention expediently contain the simple salt (s) and / or double salt (s) [constituent (s) a)] in proportions of 0.01% by weight, based on the total amount of the constituents of the metalworking fluids ⁇ including water ⁇ , up to the solubility limit of the single salt (s) and // or double salt [s] [component (s) a)].
  • tribopolymers As far as the substance (s), which is able or able to form "tribopolymers" in the aqueous phase during the metalworking workflow [component (s) b)], they are water-soluble chemical compounds of various types, which are widely used the presence of oxygen is characterized.
  • the tribopolymers which they are capable of forming are generally oligomers. This formation of tribopolymers takes place at the most stressed places under the following conditions: simultaneous effect of the 3 parameters temperature, catalytic effect of the machined or to be machined metal surfaces and finally their relative movement.
  • the metalworking fluids according to the invention advantageously contain as substance (s), which in aqueous phase during the metalworking workflow is able to form "tribopolymers" or [component (s) b)] [a] water-soluble alcohol (s), ester and / or ether including polymeric condensation products thereof. They preferably contain, as substance (s) which are or are able to form "tribopolymers" in the aqueous phase during the metalworking workflow, [component (s) b)] [an] alkylphenol polyglycol ether with a molecular weight above 500, in particular with a medium content on 6 to 50 ethylene oxide molecules.
  • the alkylphenol polyglycol ether [constituent (s) b)] [such] is particularly preferred, with an average content of 6 to 15 ⁇ , particularly 11 to 13, ethylene oxide molecules.
  • Further examples are of the alcohols octyl alcohol and p- (methyl) benzyl alcohol, of the esters of lactic acid ethyl ester and butyric acid ethyl ester and of the ethers of diethylene glycol monobutyl ether.
  • Conventional polyalkylene glycols are not included since they are unable to form tribopolymers in the aqueous phase.
  • the substance (s) which are able or capable of forming "tribopolymers" in the aqueous phase during the metalworking workflow are not [constituent (s) b)] together with mineral, Vegetable and / or synthetic lubricants used, but in aqueous solution, so that it must be those which are able to form tribopolymers in the aqueous phase.
  • the metalworking fluids according to the invention expediently contain the substance (s) which are in the aqueous phase
  • "tribopolymers” are capable of forming [component (s) b)] in proportions of 0.001 to 5% by weight, based on the total amount of the components of the metalworking fluids ⁇ including water ⁇ . Quantities of 0.001 to 2% by weight, based on the total amount of the components of the metalworking fluids ⁇ including the water ⁇ , are preferred. Higher quantities usually have no additional advantages.
  • Table 2 below shows that with the metalworking liquid I according to the invention with a content of only 0.53% by weight of borax compared to the comparison liquid B, which contains a 5% by weight emulsion of the organic lubricant is mineral oil, i.e. it contains 10 times the amount of lubricant, but much better wear results are achieved.
  • the comparison with the mineral oil with high-pressure additives [comparison liquid A] in Table 1 below shows better wear results for the metal working liquid I according to the invention at a lubricant quantity ratio of about 1: 200.
  • the metal working liquid I according to the invention is the comparison liquid B, which is a 5 wt .-% emulsion of the organic lubricant mineral oil, superior, as it from the Tables 3 and 4 below.
  • the water is expediently present in the metalworking fluids according to the invention in a proportion of at least 80% by weight, preferably 91.5 to 99.5% by weight.
  • the invention also relates to the use of the metalworking fluids according to the invention in cutting operations.
  • the invention is illustrated by the following examples. In these, the proportions by weight of borax (Na2B4O7) are given based on the anhydrous salt.
  • Liquid I with the following composition: Borax 0.53% by weight Water 99.47% by weight.
  • the twist drill type and the above values ⁇ , ⁇ and ⁇ were the same for all examples.
  • the feed was 0.11 mm / rev in this example and all other examples.
  • the cutting speed in this Example 1 (Tables 1 and 2) was 20 m / min, which was 630 rpm. corresponds. This speed is considered normal for twist drills with a diameter of 10 mm.
  • the following table 1 summarizes the values of the liquid I according to the invention and of a mineral oil-based cutting oil used as reference liquid A with high-pressure additives [EP additives].
  • the following Table 2 contains the values of the liquid I according to the invention and a 5% by weight emulsion of emulsifiable mineral oil used as comparison liquid B. In all conditions where the wear was too great to be acceptable, there are dashes (-) in the tables.
  • Liquid II with the following composition: Borax 0.53% by weight PEG 400 ML water-based wetting agent from COMIEL, Milano, Italy 0.01% by weight Non-ionic antifoam SURFINOL 104 from AIR PRODUCT and Chemicals Inc., Pasadena, USA 0.01% by weight Water 99.45% by weight
  • Liquid III with the following composition: Borax 0.53% by weight Water-soluble alkylphenol polyglycol ether with a molecular weight slightly below 800 and an average content of 12.7 ethylene oxide molecules 0.01% by weight Water 99.46% by weight
  • the boraz has, in addition to the described effect (liquid lubricant from salt melting), an effect as a corrosion and rust preventative.
  • Table 3 below shows the wear and the relative effectiveness R of the liquids I and III according to the invention when the comparison fluids are used liquid B is composed of a 5% by weight emulsion of the mineral oil.
  • the holes were drilled on tempered steel plates C 40, which had a hardness of HB 220 and were therefore harder than the normalized plates used in Examples 1 and 2. Drill type, speed and feed were as in example 1.
  • a liquid IV according to the invention was used. This had the same composition as the liquid III according to the invention, but with the following difference.
  • liquid III the water-soluble alkylphenol polyglycol ether [component b)] was used as a technical product, while borax [component a)] was used as a pure chemical product, while in the liquid IV, the borax was also a technical product (Altair, Milano).
  • the liquid IV according to the invention contained 2 technical products as components.
  • Liquid V of the following composition Borax 0.53% by weight Water-soluble alkylphenol polyglycol ether with a molecular weight slightly below 800 and an average content of 12.7 ethylene oxide molecules 0.01% by weight
  • Foam prevention additive Silicon Antifoam Emulsion SAG 7133 from Union Carbide
  • Colorant Bo Liquido Idrosolubile 5% by weight solution in water from Esperis, Milano
  • Odorant Eucaliptus 70-75 from Esperis, Milano 0.01% by weight Water 99.43% by weight.
  • Table 6 above contains comparative test data for the liquids V and IV according to the invention. This comparison is due to the presence of dye, base material and emulsified silicone in the liquid V according to the invention, since even very small amounts of these substances change the behavior of the liquid V according to the invention compared to the invention Let suspect liquid IV. In order to make the differences between the two liquids IV and V according to the invention clearer, Table 6 does not give an average value with regard to wear as in all the previous tables, but rather a maximum value. As is well known, this maximum value can always be found on the outside of the two cutting surfaces near the chamfer.
  • liquid V according to the invention shows no major differences in behavior compared to the liquid IV according to the invention, both at normal cutting speed [630 rpm] (despite a larger number of holes with the liquid V) and at higher cutting speed [920 U / min.].
  • both liquids IV and V according to the invention have a decidedly better behavior than the 5% by weight emulsion of mineral oil [comparison liquid B].
  • Analogous good results could also be obtained, for example, with metalworking fluids according to the invention, the 0.26% by weight borax and 0.01% by weight water-soluble alkylphenol polyglycol ethers with a molecular weight slightly below 800 and an average content of 12.7 ethylene oxide molecules or 0.53% by weight. -% borax and 0.02% by weight contained water-soluble alkylphenol polyglycol ether with a molecular weight slightly below 800 and an average content of 12.7 ethylene oxide molecules.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Lubricants (AREA)
EP88110542A 1987-11-13 1988-07-01 Fluides aqueux pour couper du métal en enlevant des copeaux Withdrawn EP0291102A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT2262087 1987-11-13
IT22620/87A IT1223113B (it) 1987-11-13 1987-11-13 Fluidi acquosi per lavorazioni meccaniche

Publications (2)

Publication Number Publication Date
EP0291102A2 true EP0291102A2 (fr) 1988-11-17
EP0291102A3 EP0291102A3 (fr) 1989-03-22

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ID=11198517

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EP88110542A Withdrawn EP0291102A3 (fr) 1987-11-13 1988-07-01 Fluides aqueux pour couper du métal en enlevant des copeaux

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Country Link
EP (1) EP0291102A3 (fr)
ES (1) ES2004476A4 (fr)
IT (1) IT1223113B (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0517283A3 (en) * 1991-09-02 1993-01-13 Sergio Dr. Del Ross Utilisation of water solutions for cutting
EP0919607A3 (fr) * 1997-11-26 2000-08-09 Rhenus Lub GmbH & Co. KG Lubrifiant d'usinage mécanique de matériaux et additif pour lubrifiant
US6706670B2 (en) 1996-08-30 2004-03-16 Solutia, Inc. Water soluble metal working fluids

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE749500C (de) * 1940-01-09 1945-02-05 Schnier- und Kuehlmittel fuer die spanabhebende Bearbeitung von Eisen und Stahl
DE749578C (de) * 1941-11-08 1944-11-28 Kuehlfluessigkeit fuer das Schleifen von Metallen
BE512934A (fr) * 1951-07-18
US3007871A (en) * 1958-04-08 1961-11-07 Texaco Inc Water-base lubricant composition
DE1594377A1 (de) * 1965-05-13 1971-04-29 Collardin Gmbh Gerhard OElfreies Schmiermittel
DD109398A2 (fr) * 1973-02-12 1974-11-12
FR2363623A1 (fr) * 1976-09-06 1978-03-31 Kosakewitch Michel Solutions aqueuses sans hydrocarbures, remplacant les emulsions et huiles classiques dans la coupe des metaux et permettant une economie d'energie
JPS6017477B2 (ja) * 1983-02-02 1985-05-02 日本工作油株式会社 水溶性金属加工用潤滑剤

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0517283A3 (en) * 1991-09-02 1993-01-13 Sergio Dr. Del Ross Utilisation of water solutions for cutting
DE4129140A1 (de) * 1991-09-02 1993-03-04 Del Ross Sergio Waessrige metallbearbeitungsfluessigkeiten fuer spanabhebende schneidearbeiten und ihre verwendung
US6706670B2 (en) 1996-08-30 2004-03-16 Solutia, Inc. Water soluble metal working fluids
EP0919607A3 (fr) * 1997-11-26 2000-08-09 Rhenus Lub GmbH & Co. KG Lubrifiant d'usinage mécanique de matériaux et additif pour lubrifiant

Also Published As

Publication number Publication date
IT8722620A0 (it) 1987-11-13
EP0291102A3 (fr) 1989-03-22
IT1223113B (it) 1990-09-12
ES2004476A4 (es) 1989-01-16

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