MD3708G2 - Procedeu de mărire a rezistenţei oţelului la coroziune - Google Patents
Procedeu de mărire a rezistenţei oţelului la coroziune Download PDFInfo
- 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
Links
- 229910000831 Steel Inorganic materials 0.000 title abstract 5
- 239000010959 steel Substances 0.000 title abstract 5
- 238000005260 corrosion Methods 0.000 title abstract 3
- 230000007797 corrosion Effects 0.000 title abstract 3
- 230000002708 enhancing effect Effects 0.000 title abstract 3
- 238000000034 method Methods 0.000 title abstract 2
- 238000003754 machining Methods 0.000 abstract 3
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 abstract 2
- 238000005275 alloying Methods 0.000 abstract 2
- 235000019270 ammonium chloride Nutrition 0.000 abstract 2
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 abstract 2
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 abstract 1
- 235000011114 ammonium hydroxide Nutrition 0.000 abstract 1
- 150000001875 compounds Chemical class 0.000 abstract 1
- 238000001816 cooling Methods 0.000 abstract 1
- 239000003792 electrolyte Substances 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 238000011089 mechanical engineering Methods 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- 235000010344 sodium nitrate Nutrition 0.000 abstract 1
Landscapes
- Heat Treatment Of Steel (AREA)
- Heat Treatment Of Articles (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
Abstract
Invenţia se referă la tratamentul termochimic al pieselor din oţel, poate fi folosită în industria constructoare de maşini şi în construcţia aparatelor pentru mărirea rezistenţei la coroziune a pieselor maşinilor, sculelor şi utilajului tehnologic.Procedeul de mărire a rezistenţei oţelului la coroziune constă în aceea că piesa din oţel mai întâi se supune alierii cu scântei electrice cu un metal rezistent la coroziune, cu timpul specific de aliere de 1 min/cm2, la un regim cu energia descărcării electrice în diapazonul 0,3…4,0 J. Apoi se efectuează tratarea termochimică, care constă în încălzirea anodică a piesei timp de 30 s într-un electrolit, ce conţine compuşi azotici NH4Cl 100 g/L şi NH4OH 50 g/L sau NH4Cl 110 g/L şi NaNO3 110 g/L, până la temperatura de 750°C, la tensiunea dintre electrozi de 150…220 V, cu intensitatea curentului electric de 1…15 A/cm2, şi răcirea ulterioară a piesei la aer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| MDA20070148A MD3708G2 (ro) | 2007-05-23 | 2007-05-23 | Procedeu de mărire a rezistenţei oţelului la coroziune |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| MDA20070148A MD3708G2 (ro) | 2007-05-23 | 2007-05-23 | Procedeu de mărire a rezistenţei oţelului la coroziune |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| MD3708F1 MD3708F1 (ro) | 2008-09-30 |
| MD3708G2 true MD3708G2 (ro) | 2009-04-30 |
Family
ID=39812063
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| MDA20070148A MD3708G2 (ro) | 2007-05-23 | 2007-05-23 | Procedeu de mărire a rezistenţei oţelului la coroziune |
Country Status (1)
| Country | Link |
|---|---|
| MD (1) | MD3708G2 (ro) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| MD192Z (ro) * | 2009-06-04 | 2010-11-30 | Институт Прикладной Физики Академии Наук Молдовы | Procedeu de prelucrare termochimică a pieselor din oţel |
| MD307Z (ro) * | 2010-04-27 | 2011-07-31 | Институт Прикладной Физики Академии Наук Молдовы | Inhibitor de coroziune a oţelului în apă |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| MD561Z (ro) * | 2012-02-08 | 2013-06-30 | Институт Прикладной Физики Академии Наук Молдовы | Procedeu de tratament anticoroziv al oţelului |
| MD614Z (ro) * | 2012-07-03 | 2013-10-31 | Институт Прикладной Физики Академии Наук Молдовы | Procedeu de prelucrare termochimică a pieselor din oţel |
| MD685Z (ro) * | 2013-02-13 | 2014-05-31 | Институт Прикладной Физики Академии Наук Молдовы | Procedeu de obţinere a acoperirii multistrat prin metoda alierii cu scântei electrice |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| MD2959B1 (ro) * | 2004-06-29 | 2006-01-31 | Institutul De Fizica Aplicata Al Academiei De Stiinte A Republicii Moldova | Procedeu de prelucrare a pieselor din otel pentru obtinerea stratului superficial anticorosiv |
-
2007
- 2007-05-23 MD MDA20070148A patent/MD3708G2/ro not_active IP Right Cessation
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| MD2959B1 (ro) * | 2004-06-29 | 2006-01-31 | Institutul De Fizica Aplicata Al Academiei De Stiinte A Republicii Moldova | Procedeu de prelucrare a pieselor din otel pentru obtinerea stratului superficial anticorosiv |
Non-Patent Citations (3)
| 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)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| MD192Z (ro) * | 2009-06-04 | 2010-11-30 | Институт Прикладной Физики Академии Наук Молдовы | Procedeu de prelucrare termochimică a pieselor din oţel |
| MD307Z (ro) * | 2010-04-27 | 2011-07-31 | Институт Прикладной Физики Академии Наук Молдовы | Inhibitor de coroziune a oţelului în apă |
Also Published As
| Publication number | Publication date |
|---|---|
| MD3708F1 (ro) | 2008-09-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 |