GB521572A - Improvements in or relating to chrome hardening processes - Google Patents

Improvements in or relating to chrome hardening processes

Info

Publication number
GB521572A
GB521572A GB3398038A GB3398038A GB521572A GB 521572 A GB521572 A GB 521572A GB 3398038 A GB3398038 A GB 3398038A GB 3398038 A GB3398038 A GB 3398038A GB 521572 A GB521572 A GB 521572A
Authority
GB
United Kingdom
Prior art keywords
relating
stokes
chromium
honing
hardening processes
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
Application number
GB3398038A
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.)
SHEEPBRIDGE STOKES CENTRIFUGAL
Original Assignee
SHEEPBRIDGE STOKES CENTRIFUGAL
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 SHEEPBRIDGE STOKES CENTRIFUGAL filed Critical SHEEPBRIDGE STOKES CENTRIFUGAL
Priority to GB3398038A priority Critical patent/GB521572A/en
Publication of GB521572A publication Critical patent/GB521572A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • C25D7/04—Tubes; Rings; Hollow bodies
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
    • C25D5/34—Pretreatment of metallic surfaces to be electroplated
    • C25D5/36—Pretreatment of metallic surfaces to be electroplated of iron or steel

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Electroplating Methods And Accessories (AREA)

Abstract

521,572. Electrodeposition of chromium. STOKES, F. W., and SHEEPBRIDGE STOKES CENTRIFUGAL CASTINGS CO., Ltd. Nov. 22, 1938, No. 33980. [Class 41] Metal surfaces, particularly of iron castings, such as the wearing surfaces of internal-combustion engine cylinder liners, to be hardened by the electrolytic deposition of chromium thereon are first rendered highly smooth, e.g., by machining and honing, then de-smoothed to a controlled extent by shot-blasting, knurling, or acid etching, followed if necessary by further honing to reduce the depth of the depressions formed in the surface to the order of 0.002- 0.003 inch.
GB3398038A 1938-11-22 1938-11-22 Improvements in or relating to chrome hardening processes Expired GB521572A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3398038A GB521572A (en) 1938-11-22 1938-11-22 Improvements in or relating to chrome hardening processes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3398038A GB521572A (en) 1938-11-22 1938-11-22 Improvements in or relating to chrome hardening processes

Publications (1)

Publication Number Publication Date
GB521572A true GB521572A (en) 1940-05-24

Family

ID=10359847

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3398038A Expired GB521572A (en) 1938-11-22 1938-11-22 Improvements in or relating to chrome hardening processes

Country Status (1)

Country Link
GB (1) GB521572A (en)

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