FR2335624B1 - - Google Patents

Info

Publication number
FR2335624B1
FR2335624B1 FR7638242A FR7638242A FR2335624B1 FR 2335624 B1 FR2335624 B1 FR 2335624B1 FR 7638242 A FR7638242 A FR 7638242A FR 7638242 A FR7638242 A FR 7638242A FR 2335624 B1 FR2335624 B1 FR 2335624B1
Authority
FR
France
Prior art keywords
tendency
nickel
iron
maintaining
reduced
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
FR7638242A
Other languages
French (fr)
Other versions
FR2335624A1 (en
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.)
Solvay Solutions UK Ltd
Original Assignee
Albright and Wilson 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 Albright and Wilson Ltd filed Critical Albright and Wilson Ltd
Publication of FR2335624A1 publication Critical patent/FR2335624A1/en
Application granted granted Critical
Publication of FR2335624B1 publication Critical patent/FR2335624B1/fr
Granted 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
    • C25D3/00—Electroplating: Baths therefor
    • C25D3/02—Electroplating: Baths therefor from solutions
    • C25D3/04—Electroplating: Baths therefor from solutions of chromium
    • C25D3/06—Electroplating: Baths therefor from solutions of chromium from solutions of trivalent chromium
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
    • E21D23/0004—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor along the working face
    • E21D23/0034—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor along the working face comprising a goaf shield articulated to a base member
    • E21D23/0039—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor along the working face comprising a goaf shield articulated to a base member and supported by a strut or by a row of struts parallel to the working face
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
    • E21D23/03—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor having protective means, e.g. shields, for preventing or impeding entry of loose material into the working space or support

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Electroplating And Plating Baths Therefor (AREA)

Abstract

CHROMIUM ELECTROPLATING A tendency for grey discolouration at high current density in trivalent chromium plating solutions may be reduced by maintaining therein from 30 to 150 parts per million of iron or nickel.
FR7638242A 1975-12-18 1976-12-17 COMPOSITION AND METHOD FOR THE ELECTRODEPOSITION OF CHROME Granted FR2335624A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB7595/76A GB1544833A (en) 1975-12-18 1975-12-18 Chromium electroplating

Publications (2)

Publication Number Publication Date
FR2335624A1 FR2335624A1 (en) 1977-07-15
FR2335624B1 true FR2335624B1 (en) 1980-04-04

Family

ID=10461418

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7638242A Granted FR2335624A1 (en) 1975-12-18 1976-12-17 COMPOSITION AND METHOD FOR THE ELECTRODEPOSITION OF CHROME

Country Status (5)

Country Link
BE (1) BE849522A (en)
CA (1) CA1121300A (en)
FR (1) FR2335624A1 (en)
GB (1) GB1544833A (en)
SE (1) SE455104B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2071151B (en) * 1980-03-10 1983-04-07 Ibm Trivalent chromium electroplating
FR2529581A1 (en) * 1982-06-30 1984-01-06 Armines ELECTROLYSIS BATH BASED ON TRIVALENT CHROME
CN114411211B (en) * 2022-01-20 2023-03-10 厦门市金宝源实业有限公司 Stainless steel color imitation decorative chromium plating process

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2927066A (en) * 1955-12-30 1960-03-01 Glenn R Schaer Chromium alloy plating

Also Published As

Publication number Publication date
FR2335624A1 (en) 1977-07-15
SE455104B (en) 1988-06-20
GB1544833A (en) 1979-04-25
SE7614000L (en) 1977-06-19
BE849522A (en) 1977-06-17
CA1121300A (en) 1982-04-06

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