FR2376906A1 - Coated steel shaft for pump motor - is made resistant to stress corrosion cracking by coating with nickel and heat treating - Google Patents

Coated steel shaft for pump motor - is made resistant to stress corrosion cracking by coating with nickel and heat treating

Info

Publication number
FR2376906A1
FR2376906A1 FR7800366A FR7800366A FR2376906A1 FR 2376906 A1 FR2376906 A1 FR 2376906A1 FR 7800366 A FR7800366 A FR 7800366A FR 7800366 A FR7800366 A FR 7800366A FR 2376906 A1 FR2376906 A1 FR 2376906A1
Authority
FR
France
Prior art keywords
coating
steel
pump motor
stress corrosion
corrosion cracking
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.)
Granted
Application number
FR7800366A
Other languages
French (fr)
Other versions
FR2376906B1 (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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of FR2376906A1 publication Critical patent/FR2376906A1/en
Application granted granted Critical
Publication of FR2376906B1 publication Critical patent/FR2376906B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/40—Heating elements having the shape of rods or tubes
    • H05B3/42—Heating elements having the shape of rods or tubes non-flexible
    • H05B3/48—Heating elements having the shape of rods or tubes non-flexible heating conductor embedded in insulating material
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/42—Details
    • A47L15/4214—Water supply, recirculation or discharge arrangements; Devices therefor
    • A47L15/4225—Arrangements or adaption of recirculation or discharge pumps
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C10/00—Solid state diffusion of only metal elements or silicon into metallic material surfaces
    • C23C10/28—Solid state diffusion of only metal elements or silicon into metallic material surfaces using solids, e.g. powders, pastes
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/08—Liquid supply or discharge arrangements
    • D06F39/083—Liquid discharge or recirculation arrangements
    • D06F39/085—Arrangements or adaptations of pumps

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Textile Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

Parts of the pump in dishwashers and washing machines, which are made of low alloy steel, for example the armature shaft of the pump motor, are given improved resistance to stress corrosion cracking by coating the surface with a thin layer of Ni and subjecting the workpiece to a heat treatment at about 1350 degrees K in order to diffuse Ni into the substrate. For treating structural components made of free cutting steel, steel for drawing, for bolts, and structural steel. Method is economical as the shaft does not need to be made of costly Cr-Ni steel.
FR7800366A 1977-01-08 1978-01-06 Coated steel shaft for pump motor - is made resistant to stress corrosion cracking by coating with nickel and heat treating Granted FR2376906A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2700612A DE2700612B2 (en) 1977-01-08 1977-01-08 Use of the nickel diffusion process to prevent corrosion on workpieces made of steel

Publications (2)

Publication Number Publication Date
FR2376906A1 true FR2376906A1 (en) 1978-08-04
FR2376906B1 FR2376906B1 (en) 1983-09-09

Family

ID=5998320

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7800366A Granted FR2376906A1 (en) 1977-01-08 1978-01-06 Coated steel shaft for pump motor - is made resistant to stress corrosion cracking by coating with nickel and heat treating

Country Status (3)

Country Link
DE (1) DE2700612B2 (en)
FR (1) FR2376906A1 (en)
IT (1) IT1090358B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2652225A1 (en) * 1989-09-19 1991-03-22 Vulcanic ELECTRIC HEATING TUBULAR ELEMENT AND ITS BENDING DEVICE, AND EXCHANGER HAVING SUCH ELEMENT.
FR2804130A1 (en) * 2000-01-26 2001-07-27 Usui Kokusai Sangyo Kk Steel material includes layer formed by diffusion of nickel in hot-worked material containing non-metallic inclusions

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4125585A1 (en) * 1990-10-20 1992-04-30 Schaeffler Waelzlager Kg STEEL COMPONENT WITH GALVANICALLY APPLIED CORROSION PROTECTIVE LAYER
DE102010038359B4 (en) * 2010-07-23 2015-06-25 BSH Hausgeräte GmbH A method for producing a thick-film heating element for a water-conducting household appliance and thick-film heating element for a water-conducting household appliance

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2652225A1 (en) * 1989-09-19 1991-03-22 Vulcanic ELECTRIC HEATING TUBULAR ELEMENT AND ITS BENDING DEVICE, AND EXCHANGER HAVING SUCH ELEMENT.
EP0419351A1 (en) * 1989-09-19 1991-03-27 Vulcanic Tubular electrical heating element and its bending device, and exchanger with such an element
FR2804130A1 (en) * 2000-01-26 2001-07-27 Usui Kokusai Sangyo Kk Steel material includes layer formed by diffusion of nickel in hot-worked material containing non-metallic inclusions
GB2361013A (en) * 2000-01-26 2001-10-10 Usui Kokusai Sangyo Kk Nickel diffusion layer in hot worked steel
DE10103445B4 (en) * 2000-01-26 2004-05-13 Usui Kokusai Sangyo Kaisha Ltd., Nagasawa Steel material with high fatigue strength and method for producing the steel material
GB2361013B (en) * 2000-01-26 2004-06-16 Usui Kokusai Sangyo Kk Steel material of high fatigue strength and a process for manufacturing the same

Also Published As

Publication number Publication date
IT1090358B (en) 1985-06-26
DE2700612A1 (en) 1978-07-20
FR2376906B1 (en) 1983-09-09
DE2700612B2 (en) 1980-02-28

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Legal Events

Date Code Title Description
ST Notification of lapse