US2620296A - Method of electrolytically coating and etching bearing surfaces - Google Patents

Method of electrolytically coating and etching bearing surfaces Download PDF

Info

Publication number
US2620296A
US2620296A US760762A US76076247A US2620296A US 2620296 A US2620296 A US 2620296A US 760762 A US760762 A US 760762A US 76076247 A US76076247 A US 76076247A US 2620296 A US2620296 A US 2620296A
Authority
US
United States
Prior art keywords
etching solution
electrolytically
mask
bearing surface
deposited
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
US760762A
Other languages
English (en)
Inventor
Wilsdon Sydney Charles
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.)
Monochrome Ltd
Original Assignee
Monochrome Ltd
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
Application filed by Monochrome Ltd filed Critical Monochrome Ltd
Application granted granted Critical
Publication of US2620296A publication Critical patent/US2620296A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02—Parts of sliding-contact bearings
    • F16C33/04—Brasses; Bushes; Linings
    • F16C33/06—Sliding surface mainly made of metal
    • F16C33/10—Construction relative to lubrication
    • F16C33/1025—Construction relative to lubrication with liquid, e.g. oil, as lubricant
    • F16C33/106—Details of distribution or circulation inside the bearings, e.g. details of the bearing surfaces to affect flow or pressure of the liquid
    • F16C33/1075—Wedges, e.g. ramps or lobes, for generating pressure
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D7/00—Electroplating characterised by the article coated
    • C25D7/10—Bearings
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25F—PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROM OBJECTS; APPARATUS THEREFOR
    • C25F3/00—Electrolytic etching or polishing
    • C25F3/02—Etching
    • C25F3/14—Etching locally
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02—Parts of sliding-contact bearings
    • F16C33/04—Brasses; Bushes; Linings
    • F16C33/06—Sliding surface mainly made of metal
    • F16C33/14—Special methods of manufacture; Running-in
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2223/00—Surface treatments; Hardening; Coating
    • F16C2223/30—Coating surfaces
    • F16C2223/70—Coating surfaces by electroplating or electrolytic coating, e.g. anodising, galvanising

Definitions

  • This invention relates to chromium surface layers on cylinder bores, shafts and the like, and is more particularly concerned with the treatment and finishing of said surfaces after the metal has been electrolytically deposited thereon and the surface has been ground or honed.
  • the object of the invention is to provide new or improved means for treatment of the aforesaid surfaces, whereby pits, depressions or grooves are formed in any desired or defined positions therein, which are adapted to retain oil and thus ensure eflicient lubrication between the moving parts, and at the same time leaving a considerable part of the surface unaffected and at its original hardness, to provide maximum resistance to wear.
  • a layer of chromium is electrolytically deposited on thebore of a cylinder liner or the like which, if necessary, is subsequently ground or honed to the required finished size or dimension.
  • a sleeve or casing of plastic or other suitable material is arranged to cover or surround the surface of the article to be treated, and the said article with the perforated sleeve attached thereto, which is arranged to constitute the anode, is immersed in an electrolytic bath containing a solution of caustic soda, chlorides, chromic acid, or any suitable chromium plating solution.
  • a cathode comprising a bar of steel or other suitable material, which is so disposed in said bath that the electric current flows thereto from the article constituting the anode through the holes or slots in the aforesaid casing, and the chromium or like surface adjacent to the perforations in the casing is partly or completely removed, thus forming correspondingly disposed recesses or grooves which are adapted to form pockets for retaining oil under all working conditions.
  • Figures 1 and 2 show respectively a front and a side elevation of a cylinder liner mounted in a frame or holder ready for immersion in an electrolytic bath containing a solution of caustic soda, chlorides, chromic acid, or any suitable chromium plating solution, for treatment in accordance with this invention.
  • Figure 3 shows a transverse sectional view taken on line A-A, Figure 1.
  • Figure 4 shows in sectional elevation part of a cylinder liner after treatment in accordance with this invention.
  • Figure 5 shows a side elevation of the perforated plastic sleeve adapted to be placed in the cylinder liner.
  • I provide a sleeve I, of plastic or other suitable material, in which are formed holes or perforations 2 of any desired shape and disposition.
  • the said holes 2 are shown disposed in vertical and horizontal alignment, but if desired said holes may be disposed in any other formation, such as curved or spiral.
  • the aforesaid perforated sleeve I may be conveniently made from a sheet or strip of plastic material in which are formed the desired perforations, the said perforated sheet being rolled into a cylindrical form and its abutting edges fixed together by a plastic glue, or by other suitable means.
  • a perforated sleeve such as before described is fixed within a cylinder liner 3 that has been previously chromium plated and ground or honed to the required finished dimension.
  • the external diameter of said perforated sleeve is preferably such that provides a frictional fit within the cylinder liner, thereby providing the means whereby it is held in position.
  • the cylinder liner 3 is mounted in a two part clamp 4 secured together by clamping bolts 5.
  • On one part of the said clamp 4 are welded vertically disposed rods 6 to which are fixed top and bottom plates 7 and 8 and an intermediate plate 9.
  • On the bottom plate 8 is mounted an insulating pad l provided on its upper side with a stem part I I, said pad being arranged to provide a support for a steel bar l2 which comprises the cathode, the upper end of said bar being supported in a rubber 01' like insulating bush [3 mounted in a central hole in the intermediate plate 9.
  • To the aforesaid bar [2 constituting the cathode is attached a cable M.
  • a clip l which provides a support for the cylinder liner as the anode within an electrolytic bath, containing a solution of caustic soda, chlorides, chromic acid or the like.
  • the electric current flowing from the aforesaid anode constituted by the cylinder liner to the cathode passes through the holes in the perforated sleeve I, and partly or completely removes adjacent thereto the chromium or like plated surface on the said cylinder liner 3, as shown in Figure 4, thus forming correspondingly disposed recesses l6 which are adapted to form pockets for retaining oil under all working conditions.
  • the shape or configuration and disposition of the holes in the plastic sleeve 1 may be modified as desired, for example, instead of round holes they may comprise elongated slots, and said holes or slots may be disposed in curved or spiral formation.
  • the perforated casing may conveniently comprise a sheet of perforated steel or plastic material, shaped and bent to surround the chromium plated surface of the article to be treated, in the manner previously described, whereby holes or pockets are formed in said surface.
  • a process of treating a machine part to provide an electrolytically-deposited bearing surface thereon which comprises electrolytically depositing a metallic layer on such a part to a depth to provide a bearing surface of substantially a desired final bearing size, covering the electrolytically-deposited bearing surface by a mask having perforations distributed over its area and which is resistant to attack by an electrolytic etching solution, immersing in a bath of an electrolytic etching solution the part having the metallic layer electrolytically deposited thereon and the perforated mask covering such layer, and passing an electric current from an external source through the bath of electrolytic etching solution in such direction that said part constitutes the anode until the portions of the electrolytically-deposited metallic layer exposed through the perforations in the mask to the etching solution are etched to a depth sufficient to form shallow lubricant retaining recesses while the portions of said layer covered by the portions of the mask intervening the perforations therein are not exposed to the etching solution and remain unetched and smooth,
  • a process of treating machine parts which comprises immersing a machine part in an electrolytic bath, passing an electric current derived from an external source of supply through the electrolytic bath in such manner that the part constitutes the cathode until the part has been provided with an electro-deposited metallic bearing surface which is hard and wear-resisting and has thereby substantially attained its final plated size, removing said plated part from the electrolytic bath, covering the electro-deposited metallic bearing surface with a perforated mask which is resistant to attack by an electrolytic etching solution for said bearing surface, immersing the plated part so covered in an electrolytic etching solution for said bearing surface, passing an electric current derived from an external source of supply through said electrolytic etching solution in such manner that the portions of the electro-deposited metallic bearing surface exposed to the etching solution through the perforations in the mask constitute a plurality of spaced, interconnected anodes until shallow spaced recesses of sufiicient area and depth to retain lubricant are formed in the metallic bearing surf-ace by partial removal of those
  • a process of treating machine parts which comprises immersing a machine part in an electrolytic bath, passing an electric current derived from an external source of supply through the electrolytic bath in such manner that the part constitutes the cathode until the part has been provided with an electro-deposited metallic bearing surface which is hard and wear-resisting and has thereby substantially attained its final plated size, removing said plated part from the electrolytic bath, covering the electro-deposited metallic bearing surface with a perforated mask which is resistant to attack by an electrolytic etching solution for said bearing surface, immersing the plated part so covered in electrolytic etching solution for said bearing surface, passing an electric current derived from an external source of supply through said electrolytic etching solution in such manner that the portions of the electro-deposited metallic bearing surface exposed to the etching solution through the perforations in the mask constitute a plurality of spaced inter-connected anodes until shallow, spaced, recessed areas are formed in the metallic bearing surface by partial removal of those portions of said bearing surface exposed to said electrolytic etching solution through said

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Electroplating Methods And Accessories (AREA)
US760762A 1943-02-22 1947-07-14 Method of electrolytically coating and etching bearing surfaces Expired - Lifetime US2620296A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB267121X 1943-02-22
GB190244X 1944-02-19

Publications (1)

Publication Number Publication Date
US2620296A true US2620296A (en) 1952-12-02

Family

ID=26253753

Family Applications (1)

Application Number Title Priority Date Filing Date
US760762A Expired - Lifetime US2620296A (en) 1943-02-22 1947-07-14 Method of electrolytically coating and etching bearing surfaces

Country Status (5)

Country Link
US (1) US2620296A (enrdf_load_stackoverflow)
CH (1) CH267121A (enrdf_load_stackoverflow)
FR (1) FR950941A (enrdf_load_stackoverflow)
GB (1) GB561788A (enrdf_load_stackoverflow)
NL (1) NL66417C (enrdf_load_stackoverflow)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2760929A (en) * 1952-10-06 1956-08-28 Republic Steel Corp Electroplating apparatus
US2848401A (en) * 1953-05-07 1958-08-19 Olin Mathieson Method of electrolytically rifling gun barrels
US3063763A (en) * 1958-12-02 1962-11-13 Chromium Corp Of America Chromium bearing surface
US3127331A (en) * 1959-06-15 1964-03-31 Reverse current electrolytic process
US3291667A (en) * 1961-04-10 1966-12-13 North American Aviation Inc Etching process for selectively forming workpiece surfaces
US3438789A (en) * 1964-02-27 1969-04-15 Schmidt Gmbh Karl Lubricant coating for friction surfaces and process for producing same
US3441328A (en) * 1966-10-20 1969-04-29 Forbes M Hurley Prelubricated bearing surface,and method of preparing the same
US4045312A (en) * 1974-11-30 1977-08-30 Dai Nippon Printing Co., Ltd. Method for the electrolytic etching of metal workpiece
US4082632A (en) * 1975-08-26 1978-04-04 The International Nickel Company, Inc. Production of perforated metal foil
US4119514A (en) * 1977-04-21 1978-10-10 The International Nickel Company, Inc. Production of perforated metal foil
US4706417A (en) * 1984-09-06 1987-11-17 Chromium Corporation Finish for cylinder liners
US4849302A (en) * 1985-05-24 1989-07-18 Licentia Patent-Verwaltungs-Gmbh Electrolytically metallized article and processes therefore
CN109402694A (zh) * 2017-08-15 2019-03-01 中航贵州飞机有限责任公司 一种硬质阳极氧化气缸套夹具

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2529915A1 (fr) * 1982-07-09 1984-01-13 Sofrelmo Perfectionnement au procede de depot, par electrolyse, de metal dur dans l'alesage d'une piece metallique et dispositif pour sa mise en oeuvre

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1422677A (en) * 1918-01-09 1922-07-11 Dann Products Company Method of manufacturing composite articles for bearings or other purposes
DE563435C (de) * 1930-12-20 1932-11-05 Wmf Wuerttemberg Metallwaren Aus Isolierstoff bestehende Abschirmzelle fuer oertlich verschieden stark zu versilbernde Gegenstaende
US2052962A (en) * 1934-12-31 1936-09-01 Mallory & Co Inc P R Process of etching
US2187626A (en) * 1938-07-02 1940-01-16 Merriman Brothers Inc Self-lubricating bearing
US2314604A (en) * 1938-09-03 1943-03-23 Horst Corp Of America V D Method of producing chromium wearing surfaces
US2343569A (en) * 1941-11-03 1944-03-07 Standard Oil Co California Pretreated bearing surface and method of producing the same
US2433457A (en) * 1944-04-29 1947-12-30 Koppers Co Inc Chrome plated wear resisting surface

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1422677A (en) * 1918-01-09 1922-07-11 Dann Products Company Method of manufacturing composite articles for bearings or other purposes
DE563435C (de) * 1930-12-20 1932-11-05 Wmf Wuerttemberg Metallwaren Aus Isolierstoff bestehende Abschirmzelle fuer oertlich verschieden stark zu versilbernde Gegenstaende
US2052962A (en) * 1934-12-31 1936-09-01 Mallory & Co Inc P R Process of etching
US2187626A (en) * 1938-07-02 1940-01-16 Merriman Brothers Inc Self-lubricating bearing
US2314604A (en) * 1938-09-03 1943-03-23 Horst Corp Of America V D Method of producing chromium wearing surfaces
US2343569A (en) * 1941-11-03 1944-03-07 Standard Oil Co California Pretreated bearing surface and method of producing the same
US2433457A (en) * 1944-04-29 1947-12-30 Koppers Co Inc Chrome plated wear resisting surface

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2760929A (en) * 1952-10-06 1956-08-28 Republic Steel Corp Electroplating apparatus
US2848401A (en) * 1953-05-07 1958-08-19 Olin Mathieson Method of electrolytically rifling gun barrels
US3063763A (en) * 1958-12-02 1962-11-13 Chromium Corp Of America Chromium bearing surface
US3127331A (en) * 1959-06-15 1964-03-31 Reverse current electrolytic process
US3291667A (en) * 1961-04-10 1966-12-13 North American Aviation Inc Etching process for selectively forming workpiece surfaces
US3438789A (en) * 1964-02-27 1969-04-15 Schmidt Gmbh Karl Lubricant coating for friction surfaces and process for producing same
US3441328A (en) * 1966-10-20 1969-04-29 Forbes M Hurley Prelubricated bearing surface,and method of preparing the same
US4045312A (en) * 1974-11-30 1977-08-30 Dai Nippon Printing Co., Ltd. Method for the electrolytic etching of metal workpiece
US4082632A (en) * 1975-08-26 1978-04-04 The International Nickel Company, Inc. Production of perforated metal foil
US4119514A (en) * 1977-04-21 1978-10-10 The International Nickel Company, Inc. Production of perforated metal foil
US4706417A (en) * 1984-09-06 1987-11-17 Chromium Corporation Finish for cylinder liners
US4862864A (en) * 1984-09-06 1989-09-05 Chromium Corporation Finish for cylinder liners
US4849302A (en) * 1985-05-24 1989-07-18 Licentia Patent-Verwaltungs-Gmbh Electrolytically metallized article and processes therefore
CN109402694A (zh) * 2017-08-15 2019-03-01 中航贵州飞机有限责任公司 一种硬质阳极氧化气缸套夹具

Also Published As

Publication number Publication date
FR950941A (fr) 1949-10-11
GB561788A (en) 1944-06-05
CH267121A (de) 1950-03-15
NL66417C (enrdf_load_stackoverflow)

Similar Documents

Publication Publication Date Title
US2620296A (en) Method of electrolytically coating and etching bearing surfaces
US2314604A (en) Method of producing chromium wearing surfaces
US2048578A (en) Method of and means for providing a hard wearing surface in the cylinder bores of internal combustion engines and the like
DE826362C (de) Lager und Verfahren zur Herstellung von Lagern
US1947493A (en) Coating of machine elements
US2958742A (en) Conductor roll and method of making the same
US2349920A (en) Die
US2569367A (en) Endless metal belt and method of making the same
US4221639A (en) Aluminium alloy cylinder and manufacturing method thereof
ES527169A0 (es) Procedimiento de electroformar objetos metalicos y perfeccionamientos en los objetos metalicos electroformados
US2999798A (en) Method of producing a wear-resisting surface on a metal element
US2433457A (en) Chrome plated wear resisting surface
KR100428830B1 (ko) 얇은금속스트립의연속주조용실린더표면의금속층으로써전해코팅하기위한방법및장치
US2221502A (en) Process of forming screens
GB239977A (en) Improvements relating to the electro deposition of metals
US3451903A (en) Conductor roll and method of making the same
US2355130A (en) Separation of molten magnesium from molten salt baths
US2327676A (en) Plating process
US3156632A (en) Method of applying particles to an electrofoam during electroplating
US1965019A (en) Print roll and like article
JPS57116924A (en) Inner wire
US2947674A (en) Method of preparing porous chromium wearing surfaces
GB727789A (en) Improvements in electro-deposition of chromium
US1477109A (en) Process for the manufacture of zinc cylinders for primary batteries
US2541954A (en) Process for preparing metallic surfaces for the engraving thereof