US3105048A - Solid lubricant - Google Patents

Solid lubricant Download PDF

Info

Publication number
US3105048A
US3105048A US839461A US3105048A US 3105048 A US3105048 A US 3105048A US 839461 A US839461 A US 839461A US 3105048 A US3105048 A US 3105048A
Authority
US
Grant status
Grant
Patent type
Prior art keywords
lubricating
solid
grease
graphite
lubricant
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.)
Expired - Lifetime
Application number
Inventor
Alfred R Bobrowsky
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Engelhard Industries Inc
Original Assignee
Engelhard Industries Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Grant date

Links

Images

Classifications

    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M5/00Solid or semi-solid compositions containing as the essential lubricating ingredient mineral lubricating oils or fatty oils and their use
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16BDEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS, WEDGES, JOINTS OR JOINTING
    • F16B43/00Washers or equivalent devices; Other devices for supporting bolt-heads or nuts
    • F16B43/002Washers or equivalent devices; Other devices for supporting bolt-heads or nuts with special provisions for reducing friction
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02Parts of sliding-contact bearings
    • F16C33/04Brasses; Bushes; Linings
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2201/00Inorganic compounds or elements as ingredients in lubricant compositions
    • C10M2201/04Elements
    • C10M2201/041Carbon; Graphite; Carbon black
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2201/00Inorganic compounds or elements as ingredients in lubricant compositions
    • C10M2201/04Elements
    • C10M2201/041Carbon; Graphite; Carbon black
    • C10M2201/042Carbon; Graphite; Carbon black halogenated, i.e. graphite fluoride
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/10Carboxylix acids; Neutral salts thereof
    • C10M2207/12Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms
    • C10M2207/125Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/10Carboxylix acids; Neutral salts thereof
    • C10M2207/12Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms
    • C10M2207/129Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of thirty or more carbon atoms
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/28Esters
    • C10M2207/282Esters of (cyclo)aliphatic oolycarboxylic acids
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/28Esters
    • C10M2207/34Esters having a hydrocarbon substituent of thirty or more carbon atoms, e.g. substituted succinic acid derivatives
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10NINDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2210/00Nature of the metal present as such or in compounds, i.e. in salts
    • C10N2210/01Group I, e.g. Li, Na, K, Cs, Cu, Ag, Au
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10NINDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2210/00Nature of the metal present as such or in compounds, i.e. in salts
    • C10N2210/02Group II, e.g. Mg, Ca, Ba, Zn, Cd, Hg
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10NINDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2210/00Nature of the metal present as such or in compounds, i.e. in salts
    • C10N2210/03Group III, e.g. Al, In, La
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10NINDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2250/00Form or state of lubricant compositions in which they are used
    • C10N2250/10Semi-solids or greases

Description

p 3 A. R. BOBROWSKY 3,105,048

' I SOLID LUBRICANT I Filed Jan. 23, 1961 FIG. 2

INVENTOR. ALFRED R. BOBROWSKY ATTORNEYS United States Patent ice l 5,... 24, 1%.

3,105,048 SQLID LUBRICANT Alfred R. Bohrowsky, Florham Park, N.J., assignor to Engelhard Industries, Inc., Newark, NJ., a corporation of Delaware Filed Jan. 23, 1961, Ser. No. 83,994 3 Claims. (Cl. 25212) This invention relates to a solid lubricant, and. more particularly to a method for producing a solid lubricant capable of being formed into self-lubricating solid articles, and the self-lubricating article per se.

Lubrication of moving parts of machines is of course essential to diminish friction and prevent premature wearing out and damaging of the parts. However, at times it is difiicult to lubricate the moving parts by liquid lubricants because of inaccessibility of these parts.

In accordance with the present invention, a solid lubricant is provided which is capable of being formed into self-lubricating shapes, for instance self-lubricating thrust washers for use in machinery Where it is diflicult to lubricate by liquid lubricants. The solid lubricant of this invention is prepared by intimately admixing a lubricating grease, for instance cup grease, and graphite, and then compressing this admixture by application of high pressure, preferably from about SOD-15,000 pounds per square inch, more preferably from about 1000-5000 pounds per square inch. The product obtained is a solid, coherent non-tacky mass typically in sheet or slab form and of non-pasty consistency, exhibiting some flexibility, and lending itself to further processing such as the stamping or cutting of shapes therefrom. Further, the product solid lubricants have an entirely adequate strength for usual shop handling, although they might be restricted to applications Where the thrust pressure on them will not exceed the forming pressure. An additional use of the solid lubricants of this invention are as gas seals where rubbing against a shaft must not spoil the shaft.

The quantity of grease utilized may range from about 35-70 Weight percent, and the graphite from about 65-30 weight percent of the total weight. Preferred amounts of grease are from about 4860 weight percent, and of graphite from about 52-40 weight percent.

Lubricating greases are heterogeneous mixtures of mineral oil and usually soap, the soap serving to thicken the oil. The soap is usually a metfllic salt of a higher fatty acid and is made from animal or vegetable oils high in stearic, oleic and palmitic acids. Exemplary of the greases are lime base greases and soda soap greases. Lubricating greases were generally made heretofore by saponifying animal fats or rosin in mineral oil. Alumi num oleate or stearate are used as the thickeners in some grease lubricants. Other soaps utilizable as thickeners are soaps of barium or lithium, for instance barium or lithium stearate. Synthetic lubrication oils can also be used for combining with the soaps to form greases. Typical of such synthetic oils are the oils of low pour point, high viscosity index and low volatility prepared by esterfying octyl alcohols, for instance 2-ethylhexanol, with dibasic acids such as adipic and sebacic acids. The term lubricating grease is used herein in a broad sense to include lubricating compositions comprising either mineral oil or synthetic lubricating oil and a thickener, for instance soap. Use of cup grease was found to give excellent results in forming the solid lubricant. Cup grease is a lime base grease which can be formed by saponifying an animal fat with slaked lime, and spraying the resulting product with a light colored mineral oil.

The intimate admixing of the lubricating grease and graphite can be carried out with conventional and well known mixing means, for instance with a screw propellor mixer.

The pressures may be applied to the admixture of grease and graphite by means of dies, or if desired, by means of flat plates. The time of application of such pressures may range from about 1 second-about 1 week, preferably from about 1 minute5 minutes.

It was unexpected and surprising that the application of high pressure in accordance with the invention produced the solid non-tacky lubricant mass of this invention characterized by having excellent lubricating properties. The graphite employed in the method is preferably finely divided, and has typical particle size of about 0.1 micron up to 10 microns.

The solid, coherent product of the compressing, which is typically in sheet form, can be stamped, i.e. cut out by pressing with conventional stamping apparatus, to obtain the desired shape. Alternatively, articles of the desired shape can be formed from the solid product by cutting alone. The solid product of the compressing, which exhibits a non-tacky consistency and has some flexibility as previously mentioned, contains the graphite interspersed throughout the lubricating grease.

In FIG. 1 of the accompanying drawings, a self-lubri eating thrust washer 10 is shown. The washer has a plate-like body 11 having central opening 12 therein. This thrust washer was formed by compressing an intimate admixture of the lubricating grease and graphite as previously described to form a solid, non-tacky sheet, and then stamping this washer firom the sheet. FIG. 2 is a section taken on line 2-2 of FIG. 1. FIG. 3 shows a self-lubricating half-bearing 13 having a curved strip body 14 with concave inner surface 15 and convex outer surface 16. Bearing 13 is also formed from the intimate admixture of lubricating grease and graphite previously described. FIG. 4 is a section taken on line 44 of FIG. 3.

It will be obvious to those skilled in the art that many modifications may be made within the scope of the present invention without departing from the spirit thereof, and the invention includes all such modifications.

What is claimed is:

l. A self-lubricating article comprising a shaped solid coherent mass of lubricating grease having graphite interspersed therein, said article being obtained by intimately mixing graphite and lubricating grease in the proportions of from about 35-70 weight percent of the grease and from about -30 Weight percent of the graphite, compressing the resulting mixture under pressure of about 5,00015,000 pounds per square inch for a period sufficient to form a solid coherent shapeable lubricant mass, and shaping the lubricant mass into the desired shaped article.

2. A method for producing a solid lubricant, which comprises intimately admixing finely divided graphite and lubricating grease in the proportion of from about 3570 weight percent of the grease and from about 65-30 Weight percent of the graphite, and compressing the admixture 7 References Cited in the file of this patent under pressure of about 500015,000 pounds per square inch for a period to form a solid lubricant. UNITED STATES PATENTS 3. A method of preparing a self-lubricating solid arti- 1 390 197 Dower Se t 6 1921 cle, which comprises intimately admixing finely divided 5 1589919 Adams 1926 graphite and lubricating grease in the proportions of from 2223272 R h "Ti" N 1940 about 35-70 Weight percent of the grease and from about 0e net 6 a 65-30 weight percent of the graphite, compressing the ad- OTHER REFERENCES mlxture under a pFessure of q about SOOOISOOO Manufacture and Application of Lubricating Grease, pounds per square mch for a period of from about 1-5 10 by Boner, Reinhold Publ Corp York, 1954, pages minutes to form a solid coherent shapeable lubricant 332 411 and 412.

mass, and shaping the solid lubricant into a self-lubricating article of the desired shape.

Claims (1)

1. A SELF-LUBRICATING ARTICLE COMPRISING A SHAPED SOLID COHERENT MASS OF LUBRICATING GREASE HAVING GRAPHITE INTERSPERSED THEREIN, SAID ARTICLE BEING OBTAINED BY INTIMATELY MIXING GRAPHITE AND LUBRICATING GREASE IN THE PROPORTIONS OF FROM ABOUT 35-70 WEIGHT PERCENT OF THE GREASE AND FROM ABOUT 65-30 WEIGHT PERCENT OF THE GRAPHITE, COMPRESSING THE RESULTING MIXTURE UNDER PRESSURE OF ABOUT 5,000-15,000 POUNDS PER SQUARE INCH FOR A PERIOD SUFFICIENT TO FORM A SOLID COHERENT SHAPEABLE LUBRICANT MASS, AND SHAPING THE LUBRICANT MASS INTO THE DESIRED SHAPED ARTICLE.
US3105048A 1961-01-23 1961-01-23 Solid lubricant Expired - Lifetime US3105048A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US3105048A US3105048A (en) 1961-01-23 1961-01-23 Solid lubricant

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US3105048A US3105048A (en) 1961-01-23 1961-01-23 Solid lubricant

Publications (1)

Publication Number Publication Date
US3105048A true US3105048A (en) 1963-09-24

Family

ID=21731394

Family Applications (1)

Application Number Title Priority Date Filing Date
US3105048A Expired - Lifetime US3105048A (en) 1961-01-23 1961-01-23 Solid lubricant

Country Status (1)

Country Link
US (1) US3105048A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2339056A1 (en) * 1976-01-22 1977-08-19 Bochumer Eisen Heintzmann galleries soutenement frames
WO1994013760A2 (en) * 1992-12-01 1994-06-23 A.W. Chesterton Company Malleable packing
WO2001065584A1 (en) * 2000-03-01 2001-09-07 General Electric Company Circuit interrupter operating mechanism
US6590482B2 (en) 2000-03-01 2003-07-08 General Electric Company Circuit breaker mechanism tripping cam
US20110302978A1 (en) * 2010-06-14 2011-12-15 Ati Properties, Inc. Lubrication processes for enhanced forgeability
US20130240063A1 (en) * 2012-03-13 2013-09-19 Halliburton Energy Services, Inc. Particulate-tolerant valve comprising one or more recesses capable of containing the particulate
WO2016040545A1 (en) * 2014-09-12 2016-03-17 Sidler Thomas L Improvements in methods and systems requiring lubrication

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1390197A (en) * 1920-05-10 1921-09-06 George I Alden Self-lubricating metal bearing and the like
US1589919A (en) * 1924-02-01 1926-06-22 Us Graphite Company Graphitic bearing
US2223272A (en) * 1937-12-11 1940-11-26 Socony Vacuum Oil Co Inc Lubricant composition and method of lubrication

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1390197A (en) * 1920-05-10 1921-09-06 George I Alden Self-lubricating metal bearing and the like
US1589919A (en) * 1924-02-01 1926-06-22 Us Graphite Company Graphitic bearing
US2223272A (en) * 1937-12-11 1940-11-26 Socony Vacuum Oil Co Inc Lubricant composition and method of lubrication

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2339056A1 (en) * 1976-01-22 1977-08-19 Bochumer Eisen Heintzmann galleries soutenement frames
WO1994013760A2 (en) * 1992-12-01 1994-06-23 A.W. Chesterton Company Malleable packing
WO1994013760A3 (en) * 1992-12-01 1994-11-10 Chesterton A W Co Malleable packing
US6466117B2 (en) 2000-03-01 2002-10-15 General Electric Company Circuit interrupter operating mechanism
US6346868B1 (en) 2000-03-01 2002-02-12 General Electric Company Circuit interrupter operating mechanism
US6388547B1 (en) 2000-03-01 2002-05-14 General Electric Company Circuit interrupter operating mechanism
WO2001065584A1 (en) * 2000-03-01 2001-09-07 General Electric Company Circuit interrupter operating mechanism
US6590482B2 (en) 2000-03-01 2003-07-08 General Electric Company Circuit breaker mechanism tripping cam
US6700467B2 (en) 2000-03-01 2004-03-02 General Electric Company Circuit interrupter operating mechanism
US20110302978A1 (en) * 2010-06-14 2011-12-15 Ati Properties, Inc. Lubrication processes for enhanced forgeability
US20130240063A1 (en) * 2012-03-13 2013-09-19 Halliburton Energy Services, Inc. Particulate-tolerant valve comprising one or more recesses capable of containing the particulate
US9022058B2 (en) * 2012-03-13 2015-05-05 Halliburton Energy Services, Inc Particulate-tolerant valve comprising one or more recesses capable of containing the particulate
WO2016040545A1 (en) * 2014-09-12 2016-03-17 Sidler Thomas L Improvements in methods and systems requiring lubrication

Similar Documents

Publication Publication Date Title
US3249538A (en) Lubricating method and composition
US2397956A (en) Production of lubricants
US4256591A (en) Lubricant, lubricant composition and method for lubricating a surface
US5908664A (en) Method of working metal member
US2450221A (en) Shear-resistant grease
US2704363A (en) Grease manufacture
US2345199A (en) Emulsifiable lubricant
US2182137A (en) Soda soap grease
US3021594A (en) Metal-shaping lubricant compositions and method
US4168241A (en) Lubricant and method for non-chip metal forming
US2468098A (en) Grease composition
US3883439A (en) Grease composition
US2999066A (en) Lubricant containing a calcium saltcalcium soap mixture and process for forming same
USRE23184E (en) Precoated material and dry lubri
US4076637A (en) Metal dispersions and method for producing same
US4138348A (en) Lubricant for use in non-chip metal forming
US3139405A (en) Extreme pressure lubricants
US3390562A (en) Lubricant for metal cold forming
US5706684A (en) Metalworking process
US2157452A (en) Extreme pressure lubricating compositions
US3931020A (en) Smokeless forging lubricant
US3223624A (en) Lubricating grease
US2468099A (en) High-temperature grease
US2162454A (en) Cutting compound
US2597018A (en) Lubricant