MD3708G2 - Process for enhancing the corrosion resistance of steel - Google Patents

Process for enhancing the corrosion resistance of steel

Info

Publication number
MD3708G2
MD3708G2 MDA20070148A MD20070148A MD3708G2 MD 3708 G2 MD3708 G2 MD 3708G2 MD A20070148 A MDA20070148 A MD A20070148A MD 20070148 A MD20070148 A MD 20070148A MD 3708 G2 MD3708 G2 MD 3708G2
Authority
MD
Moldova
Prior art keywords
steel
enhancing
machining
corrosion resistance
nh4cl
Prior art date
Application number
MDA20070148A
Other languages
Romanian (ro)
Russian (ru)
Other versions
MD3708F1 (en
Inventor
Владимир ПАРШУТИН
Валентин МИХАЙЛОВ
Эмиль ПАСИНКОВСКИ
Василе АГАФИЙ
Original Assignee
Институт Прикладной Физики Академии Наук Молдовы
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 Институт Прикладной Физики Академии Наук Молдовы filed Critical Институт Прикладной Физики Академии Наук Молдовы
Priority to MDA20070148A priority Critical patent/MD3708G2/en
Publication of MD3708F1 publication Critical patent/MD3708F1/en
Publication of MD3708G2 publication Critical patent/MD3708G2/en

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  • Heat Treatment Of Steel (AREA)
  • Heat Treatment Of Articles (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)

Abstract

The invention relates to the thermochemical machining of steel articles and can be used in mechanical engineering and instrument engineering for enhancing the corrosion resistance of machine parts, instruments and machining attachments.The process for enhancing the corrosion resistance of steel consists in that at first the steel article is subjected to electrospark alloying with a corrosion-resistance metal, with the specific time of alloying of 1 min/cm2, with the electric discharge energy in the range of 0,3…4,0 J. Then it is carried out the thermochemical machining, consisting in the anode heating of the steel article during 30 s into an electrolyte containing nitric compounds NH4Cl 100 g/l and NH4OH 50 g/l or NH4Cl 110 g/l and NaNO3 110 g/l, up to the temperature of 750°C, at the voltage between electrodes of 150…220 V, with the current density of 1…15 A/cm2 and subsequent cooling in the open air.
MDA20070148A 2007-05-23 2007-05-23 Process for enhancing the corrosion resistance of steel MD3708G2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
MDA20070148A MD3708G2 (en) 2007-05-23 2007-05-23 Process for enhancing the corrosion resistance of steel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
MDA20070148A MD3708G2 (en) 2007-05-23 2007-05-23 Process for enhancing the corrosion resistance of steel

Publications (2)

Publication Number Publication Date
MD3708F1 MD3708F1 (en) 2008-09-30
MD3708G2 true MD3708G2 (en) 2009-04-30

Family

ID=39812063

Family Applications (1)

Application Number Title Priority Date Filing Date
MDA20070148A MD3708G2 (en) 2007-05-23 2007-05-23 Process for enhancing the corrosion resistance of steel

Country Status (1)

Country Link
MD (1) MD3708G2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
MD192Z (en) * 2009-06-04 2010-11-30 Институт Прикладной Физики Академии Наук Молдовы Process for thermochemical treatment of steel articles
MD307Z (en) * 2010-04-27 2011-07-31 Институт Прикладной Физики Академии Наук Молдовы Inhibitor of steel corrosion in the water

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
MD561Z (en) * 2012-02-08 2013-06-30 Институт Прикладной Физики Академии Наук Молдовы Process for anticorrosion machining of steel
MD614Z (en) * 2012-07-03 2013-10-31 Институт Прикладной Физики Академии Наук Молдовы Process for chemicothermal treatment of steel products
MD685Z (en) * 2013-02-13 2014-05-31 Институт Прикладной Физики Академии Наук Молдовы Process for producing a multilayer coating by the electrospark alloying method

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
MD2959B1 (en) * 2004-06-29 2006-01-31 Institutul De Fizica Aplicata Al Academiei De Stiinte A Republicii Moldova Process for steel article working for anticorrosive superficial layer obtaining

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
MD2959B1 (en) * 2004-06-29 2006-01-31 Institutul De Fizica Aplicata Al Academiei De Stiinte A Republicii Moldova Process for steel article working for anticorrosive superficial layer obtaining

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
Гитлевич А.Е., Михайлов В.В., Парканский Н.Я., Ревуцкий В.М. Электроискровое легирование металлических поверхностей. Кишинев, 1985 *
Паршутин В.В., Ревенко В.Г., Пасиновский Е.А., Шкурпело А.И., Житару Р.П. Влияние способа ввода азота на электрохимическое, коррозионное поведение и физико-механические свойства модифицированных поверхностей сталей. Электронная обработка материалов, 2004, № 4. c. 14-33 *
Чернова Г.П., Богдашкина Н.Л., Паршутин В.В. и др. Электрохимическое и коррозионное поведение стали 40Х, азотированной в «электролитной плазме». Защита металлов, 1984, № 3. c. 406-411 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
MD192Z (en) * 2009-06-04 2010-11-30 Институт Прикладной Физики Академии Наук Молдовы Process for thermochemical treatment of steel articles
MD307Z (en) * 2010-04-27 2011-07-31 Институт Прикладной Физики Академии Наук Молдовы Inhibitor of steel corrosion in the water

Also Published As

Publication number Publication date
MD3708F1 (en) 2008-09-30

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FG4A Patent for invention issued
KA4A Patent for invention lapsed due to non-payment of fees (with right of restoration)
MM4A Patent for invention definitely lapsed due to non-payment of fees