MD614Y - Process for chemicothermal treatment of steel products - Google Patents
Process for chemicothermal treatment of steel products Download PDFInfo
- Publication number
- MD614Y MD614Y MDS20120096A MDS20120096A MD614Y MD 614 Y MD614 Y MD 614Y MD S20120096 A MDS20120096 A MD S20120096A MD S20120096 A MDS20120096 A MD S20120096A MD 614 Y MD614 Y MD 614Y
- Authority
- MD
- Moldova
- Prior art keywords
- aqueous solution
- solution containing
- product
- during
- chemicothermal
- Prior art date
Links
- 238000000034 method Methods 0.000 title abstract 3
- 229910000831 Steel Inorganic materials 0.000 title abstract 2
- 239000010959 steel Substances 0.000 title abstract 2
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 abstract 6
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 abstract 4
- LPXPTNMVRIOKMN-UHFFFAOYSA-M sodium nitrite Chemical compound [Na+].[O-]N=O LPXPTNMVRIOKMN-UHFFFAOYSA-M 0.000 abstract 4
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 abstract 3
- 239000007864 aqueous solution Substances 0.000 abstract 3
- SQQMAOCOWKFBNP-UHFFFAOYSA-L manganese(II) sulfate Chemical compound [Mn+2].[O-]S([O-])(=O)=O SQQMAOCOWKFBNP-UHFFFAOYSA-L 0.000 abstract 2
- LGQLOGILCSXPEA-UHFFFAOYSA-L nickel sulfate Chemical compound [Ni+2].[O-]S([O-])(=O)=O LGQLOGILCSXPEA-UHFFFAOYSA-L 0.000 abstract 2
- 235000011007 phosphoric acid Nutrition 0.000 abstract 2
- KMUONIBRACKNSN-UHFFFAOYSA-N potassium dichromate Chemical compound [K+].[K+].[O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O KMUONIBRACKNSN-UHFFFAOYSA-N 0.000 abstract 2
- 235000010344 sodium nitrate Nutrition 0.000 abstract 2
- 235000010288 sodium nitrite Nutrition 0.000 abstract 2
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 abstract 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 abstract 1
- 235000019270 ammonium chloride Nutrition 0.000 abstract 1
- 238000005260 corrosion Methods 0.000 abstract 1
- 230000007797 corrosion Effects 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-ZSJDYOACSA-N heavy water Substances [2H]O[2H] XLYOFNOQVPJJNP-ZSJDYOACSA-N 0.000 abstract 1
- BRWIZMBXBAOCCF-UHFFFAOYSA-N hydrazinecarbothioamide Chemical compound NNC(N)=S BRWIZMBXBAOCCF-UHFFFAOYSA-N 0.000 abstract 1
- 235000007079 manganese sulphate Nutrition 0.000 abstract 1
- 239000011702 manganese sulphate Substances 0.000 abstract 1
- 229910000357 manganese(II) sulfate Inorganic materials 0.000 abstract 1
- 238000011089 mechanical engineering Methods 0.000 abstract 1
- 229910000363 nickel(II) sulfate Inorganic materials 0.000 abstract 1
- 238000002161 passivation Methods 0.000 abstract 1
- 238000010791 quenching Methods 0.000 abstract 1
- 230000000171 quenching effect Effects 0.000 abstract 1
- 239000004317 sodium nitrate Substances 0.000 abstract 1
- 239000011701 zinc Substances 0.000 abstract 1
- LKCUKVWRIAZXDU-UHFFFAOYSA-L zinc;hydron;phosphate Chemical compound [Zn+2].OP([O-])([O-])=O LKCUKVWRIAZXDU-UHFFFAOYSA-L 0.000 abstract 1
Landscapes
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
The invention relates to a process for chemicothermal treatment of steel products and can be used in mechanical engineering and instrument engineering for increasing the corrosion resistance of machine parts, tools and tooling.The process, according to the invention, comprises the anode heating of the product in an aqueous solution containing NH4Cl, NH4NO3 and additionally thiosemicarbazide H2N-CS-NH-NH2, during 1…6 min. The subsequent quenching of the product is carried out in an aqueous solution containing zinc monophosphate Zn(H2PO4)2·2H2O, nickel sulphate NiSO4, manganese sulphate MnSO4, phosphoric acid, H3PO4, sodium nitrate NaNO3 and sodium nitrite NaNO2, at the temperature of 20…40°C during 1…20 min. Afterwards, it is carried out the passivation of the product in an aqueous solution containing sodium hydroxide NaOH and potassium bichromate K2Cr2O7, at the temperature of 85…90°C during 1…5 min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| MDS20120096A MD614Z (en) | 2012-07-03 | 2012-07-03 | Process for chemicothermal treatment of steel products |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| MDS20120096A MD614Z (en) | 2012-07-03 | 2012-07-03 | Process for chemicothermal treatment of steel products |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| MD614Y true MD614Y (en) | 2013-03-31 |
| MD614Z MD614Z (en) | 2013-10-31 |
Family
ID=48045155
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| MDS20120096A MD614Z (en) | 2012-07-03 | 2012-07-03 | Process for chemicothermal treatment of steel products |
Country Status (1)
| Country | Link |
|---|---|
| MD (1) | MD614Z (en) |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU461161A1 (en) * | 1971-07-13 | 1975-02-25 | Институт Прикладной Физики Ан Мсср | The method of chemical heat treatment of metals |
| SU621799A1 (en) * | 1977-03-09 | 1978-08-30 | Институт Прикладной Физики Ан Молдавской Сср | Electrolyte for nitriding steel components in anode process |
| SU969761A1 (en) * | 1980-02-20 | 1982-10-30 | Институт Прикладной Физики Ан Мсср | Method and electrolyte for decarburizing steel |
| SU1087566A1 (en) * | 1982-12-23 | 1984-04-23 | Киевский Ордена Трудового Красного Знамени Институт Инженеров Гражданской Авиации | Method for improving products of structural steels |
| SU1640203A1 (en) * | 1988-11-15 | 1991-04-07 | Предприятие П/Я Р-6219 | Method of chemical-thermal treatment of steel parts |
| SU1650767A1 (en) * | 1988-12-06 | 1991-05-23 | Предприятие П/Я Р-6219 | Composition of electrolyte for carbonitriding of steel products in electrolyte plasma |
| MD2959C2 (en) * | 2004-06-29 | 2006-08-31 | Институт Прикладной Физики Академии Наук Молдовы | Process for steel article working for anticorrosive superficial layer obtaining |
| MD3606G2 (en) * | 2007-02-27 | 2008-12-31 | Институт Прикладной Физики Академии Наук Молдовы | Process for activating the tungsten-containing hard alloys surfaces for low-temperature brazing (variants) |
| MD3708G2 (en) * | 2007-05-23 | 2009-04-30 | Институт Прикладной Физики Академии Наук Молдовы | Process for enhancing the corrosion resistance of steel |
| MD192Z (en) * | 2009-06-04 | 2010-11-30 | Институт Прикладной Физики Академии Наук Молдовы | Process for thermochemical treatment of steel articles |
| MD336Z (en) * | 2010-03-03 | 2011-09-30 | Институт Прикладной Физики Академии Наук Молдовы | Process for thermochemical machining of metal articles |
-
2012
- 2012-07-03 MD MDS20120096A patent/MD614Z/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| MD614Z (en) | 2013-10-31 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FG9Y | Short term patent issued | ||
| KA4Y | Short-term patent lapsed due to non-payment of fees (with right of restoration) |