SU805954A3 - Method of regenerating carbonate-containing salt melts for nitriding and/or carburization of metallic articles - Google Patents
Method of regenerating carbonate-containing salt melts for nitriding and/or carburization of metallic articles Download PDFInfo
- Publication number
- SU805954A3 SU805954A3 SU741996945A SU1996945A SU805954A3 SU 805954 A3 SU805954 A3 SU 805954A3 SU 741996945 A SU741996945 A SU 741996945A SU 1996945 A SU1996945 A SU 1996945A SU 805954 A3 SU805954 A3 SU 805954A3
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- melt
- carbonate
- regenerating
- salt
- cyanate
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 15
- 239000000155 melt Substances 0.000 title claims abstract description 11
- 150000003839 salts Chemical class 0.000 title claims abstract description 11
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 title claims abstract description 7
- 230000001172 regenerating effect Effects 0.000 title claims abstract 4
- 238000005121 nitriding Methods 0.000 title abstract description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 6
- 230000008929 regeneration Effects 0.000 claims abstract description 6
- 238000011069 regeneration method Methods 0.000 claims abstract description 6
- XLJMAIOERFSOGZ-UHFFFAOYSA-M cyanate Chemical compound [O-]C#N XLJMAIOERFSOGZ-UHFFFAOYSA-M 0.000 claims abstract description 5
- 229910052751 metal Inorganic materials 0.000 claims abstract description 4
- 239000002184 metal Substances 0.000 claims abstract description 4
- -1 urea compound Chemical class 0.000 claims abstract description 3
- 239000010410 layer Substances 0.000 claims description 5
- 241000219112 Cucumis Species 0.000 claims description 4
- 235000015510 Cucumis melo subsp melo Nutrition 0.000 claims description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 4
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 4
- FJJCIZWZNKZHII-UHFFFAOYSA-N [4,6-bis(cyanoamino)-1,3,5-triazin-2-yl]cyanamide Chemical compound N#CNC1=NC(NC#N)=NC(NC#N)=N1 FJJCIZWZNKZHII-UHFFFAOYSA-N 0.000 claims description 4
- 238000005452 bending Methods 0.000 claims description 4
- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical class N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 claims description 3
- 229920000642 polymer Polymers 0.000 claims description 3
- 238000007654 immersion Methods 0.000 claims description 2
- 238000009434 installation Methods 0.000 claims description 2
- 229910052742 iron Inorganic materials 0.000 claims description 2
- 230000007774 longterm Effects 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 239000011780 sodium chloride Substances 0.000 claims description 2
- 239000002344 surface layer Substances 0.000 claims description 2
- 150000003918 triazines Chemical class 0.000 claims description 2
- 238000005255 carburizing Methods 0.000 claims 2
- 239000012492 regenerant Substances 0.000 claims 2
- 239000000126 substance Substances 0.000 claims 2
- 239000002253 acid Substances 0.000 claims 1
- 239000000956 alloy Substances 0.000 claims 1
- 229910045601 alloy Inorganic materials 0.000 claims 1
- 239000007859 condensation product Substances 0.000 claims 1
- WSFSSNUMVMOOMR-UHFFFAOYSA-N formaldehyde Substances O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 claims 1
- 238000005088 metallography Methods 0.000 claims 1
- 150000002739 metals Chemical class 0.000 claims 1
- 239000000047 product Substances 0.000 claims 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 6
- 239000004202 carbamide Substances 0.000 abstract description 4
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 3
- 150000002894 organic compounds Chemical class 0.000 abstract description 2
- LELOWRISYMNNSU-UHFFFAOYSA-N hydrogen cyanide Chemical compound N#C LELOWRISYMNNSU-UHFFFAOYSA-N 0.000 abstract 2
- 229920000877 Melamine resin Polymers 0.000 abstract 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 abstract 1
- 150000001768 cations Chemical class 0.000 abstract 1
- JMANVNJQNLATNU-UHFFFAOYSA-N glycolonitrile Natural products N#CC#N JMANVNJQNLATNU-UHFFFAOYSA-N 0.000 abstract 1
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 abstract 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 3
- 238000003763 carbonization Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000006396 nitration reaction Methods 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000011089 mechanical engineering Methods 0.000 description 1
- LIXWSNVLHFNXAJ-UHFFFAOYSA-N sodium;oxidoazaniumylidynemethane Chemical compound [Na+].[O-][N+]#[C-] LIXWSNVLHFNXAJ-UHFFFAOYSA-N 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
Classifications
-
- 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
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C8/40—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using liquids, e.g. salt baths, liquid suspensions
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
- Treating Waste Gases (AREA)
- Materials Applied To Surfaces To Minimize Adherence Of Mist Or Water (AREA)
- Polyamides (AREA)
- Fertilizers (AREA)
Abstract
Description
Изобретение относится к машиностроению, а именно к способам химикотермической обработки, и может использоваться, для регенерации солевых расплавов при нитрировании или на- * углероживании металлических изделий.The invention relates to mechanical engineering, and in particular to methods of chemothermal processing, and can be used for the regeneration of salt melts during nitration or carbonization of metal products.
Известен способ регенерации карбонатсодержащих солевых расплавов для азотирования или цементации путем., периодического введения в них соединений, содержащих углерод и азот, например мочевину (1) .A known method of regeneration of carbonate-containing salt melts for nitriding or cementation by., Periodically introducing into them compounds containing carbon and nitrogen, for example urea (1).
Недостаток данного способа заключается в том, что добавление мо- 15 чевины приводит к сильному выделению ядовитых газов. Кроме того, при добавлении мочевины в рабочий расплав температура должна быть снижена, а следовательно, необходим пос- 20 ледующий подогрев.расплава. Все это приводит к увеличению времени обработки.The disadvantage of this method is that the addition of urea leads to a strong release of toxic gases. In addition, when urea is added to the working melt, the temperature must be reduced, and therefore, subsequent heating of the melt is necessary. All this leads to an increase in processing time.
Цель изобретения - упрощение процесса обработки и его интенсификация.25The purpose of the invention is to simplify the processing process and its intensification. 25
Поставленная цель достигается тем, что для регенерации карбонатсодержащих расплавов применяются полимерные триазиновые соединения типа мелам, мелем,мелон. 30This goal is achieved by the fact that for the regeneration of carbonate-containing melts are used polymeric triazine compounds such as chalk, chalk, chalk. thirty
Карбонаты, содержащиеся в избытке в солевом расплаве и ставшие не эффективными для насыщения с добавлением полимерных органических соединений, содержащих углерод и азот, преобразуются в ционат, с помощью которого в зависимости от температурных условий происходит нитрирование и науглероживание. Полимерные триазоновые соединения не содержат при нормальных условиях ядовитых компонентов и не оказывают вредного действия на обслуживающий персонал. Они вводятся при температурах 500-950 С.Carbonates, which are abundant in the salt melt and become inefficient for saturation with the addition of polymer organic compounds containing carbon and nitrogen, are converted into the ation, with the help of which nitration and carburization occur, depending on temperature conditions. Polymer triazone compounds do not contain toxic components under normal conditions and do not have a harmful effect on maintenance personnel. They are introduced at temperatures of 500-950 C.
Пример. В цилиндрическом титановом тигле проводят цианирование в расплаве, содержащем кг: KCNO 64, NaCNO 0,16, Κ.^Ο^Ο,Ιβ и Na.jCO.,4 при температуре выше 570°С. Через расплав пропускают 200 л/ч воздуха. За сутки содержание цианата падает от 43 до 40 вес.%, а содержание карбоната возрастает от 10 до 13 вес.%. При. добавлении 3 кг мелона вновь восстанавливается исходная величина. Толщина насыщаемого слоя - 0,5 мм после 2 ч обработки с содержанием- углерода в нем до 0,3%.Example. Cyanide in a cylindrical titanium crucible is carried out in a melt containing kg: KCNO 64, NaCNO 0.16, Κ. ^ Ο ^ Ο, Ιβ and Na.jCO., 4 at a temperature above 570 ° C. 200 l / h of air are passed through the melt. During the day, the cyanate content drops from 43 to 40 wt.%, And the carbonate content increases from 10 to 13 wt.%. At. adding 3 kg of melon restores the original value. The thickness of the saturated layer is 0.5 mm after 2 hours of treatment with a carbon content in it of up to 0.3%.
При испытании на изгиб на установке Шенка-Репида обнаружено повышение сопротивления длительному изгибу от^¢0)=12 кг/мм *доСе« =42 кг/мм?When tested for bending at the Shenk-Repid installation, an increase in the resistance to long-term bending from ^ ¢ 0) = 12 kg / mm * to Се «= 42 kg / mm?
В железном тигле проводят науглероживание в течение 2 ч путем погружения в солевой расплав, содер- 5 жащий кг: &аС\225, Na^CO. 65, NaCl 10 при 930°С. Для поддержания состава бани добавляется»125 г/ч мелона. После дополнительного закаливания твердость поверхностного слоя рав- Ю няется 64 Роквелл. Содержание углерода в слое составляет 0,7%. Глубина насыщаемого слоя*0,5 до.Carbonization is carried out in an iron crucible for 2 hours by immersion in a molten salt containing 5 kg: & aC \ 2 25, Na ^ CO. 65, NaCl 10 at 930 ° C. To maintain the composition of the bath, 125 g / h of melon is added. After additional hardening, the hardness of the surface layer is 64 Rockwell. The carbon content in the layer is 0.7%. Depth of the saturated layer * 0.5 to.
Предлагаемый способ позволяет упростить и интенсифицировать процесс 15 насыщения в 1,5-2 раза.The proposed method allows to simplify and intensify the saturation process 15 in 1.5-2 times.
Claims (5)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19732310815 DE2310815C3 (en) | 1973-03-05 | Process for regenerating nitriding and carbonization baths |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU805954A3 true SU805954A3 (en) | 1981-02-15 |
Family
ID=5873812
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU741996945A SU805954A3 (en) | 1973-03-05 | 1974-02-18 | Method of regenerating carbonate-containing salt melts for nitriding and/or carburization of metallic articles |
Country Status (15)
| Country | Link |
|---|---|
| JP (1) | JPS547502B2 (en) |
| AT (1) | AT340981B (en) |
| BR (1) | BR7401602D0 (en) |
| CA (1) | CA1036916A (en) |
| CH (1) | CH586286A5 (en) |
| DD (1) | DD110058A5 (en) |
| ES (1) | ES423504A1 (en) |
| FR (1) | FR2220595B1 (en) |
| GB (1) | GB1458255A (en) |
| IN (1) | IN141733B (en) |
| IT (1) | IT1009199B (en) |
| SE (1) | SE410012B (en) |
| SU (1) | SU805954A3 (en) |
| YU (1) | YU40100B (en) |
| ZA (1) | ZA741415B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2441310C3 (en) * | 1974-08-29 | 1978-05-18 | Deutsche Gold- Und Silber-Scheideanstalt Vormals Roessler, 6000 Frankfurt | Process for nitriding iron and steel in salt baths |
| US4938452A (en) * | 1988-12-10 | 1990-07-03 | Aisan Kogyo Kabushiki Kaisha | Air control device for internal combustion engine |
| JP2007225186A (en) * | 2006-02-23 | 2007-09-06 | Matsushita Electric Ind Co Ltd | High frequency cooking device |
| CN111560581B (en) * | 2020-05-29 | 2023-08-25 | 江苏奕华新材料科技有限公司 | Regenerant for nitrocarburizing technology and preparation method thereof |
-
1974
- 1974-02-18 SU SU741996945A patent/SU805954A3/en active
- 1974-02-22 ES ES423504A patent/ES423504A1/en not_active Expired
- 1974-03-01 DD DD176897A patent/DD110058A5/xx unknown
- 1974-03-04 IN IN462/CAL/74A patent/IN141733B/en unknown
- 1974-03-04 GB GB960574A patent/GB1458255A/en not_active Expired
- 1974-03-04 YU YU565/74A patent/YU40100B/en unknown
- 1974-03-04 AT AT173174A patent/AT340981B/en not_active IP Right Cessation
- 1974-03-05 CH CH308774A patent/CH586286A5/xx not_active IP Right Cessation
- 1974-03-05 CA CA194,051A patent/CA1036916A/en not_active Expired
- 1974-03-05 BR BR1602/74A patent/BR7401602D0/en unknown
- 1974-03-05 SE SE7402945A patent/SE410012B/en not_active IP Right Cessation
- 1974-03-05 JP JP2566574A patent/JPS547502B2/ja not_active Expired
- 1974-03-05 ZA ZA00741415A patent/ZA741415B/en unknown
- 1974-03-05 FR FR7407504A patent/FR2220595B1/fr not_active Expired
- 1974-03-06 IT IT67570/74A patent/IT1009199B/en active
Also Published As
| Publication number | Publication date |
|---|---|
| FR2220595A1 (en) | 1974-10-04 |
| FR2220595B1 (en) | 1976-12-10 |
| JPS547502B2 (en) | 1979-04-07 |
| ES423504A1 (en) | 1976-05-16 |
| AT340981B (en) | 1978-01-10 |
| IN141733B (en) | 1977-04-09 |
| DD110058A5 (en) | 1974-12-05 |
| YU56574A (en) | 1982-02-28 |
| CA1036916A (en) | 1978-08-22 |
| SE410012B (en) | 1979-09-17 |
| BR7401602D0 (en) | 1974-10-29 |
| JPS49119839A (en) | 1974-11-15 |
| DE2310815A1 (en) | 1974-09-12 |
| GB1458255A (en) | 1976-12-15 |
| ATA173174A (en) | 1977-05-15 |
| IT1009199B (en) | 1976-12-10 |
| ZA741415B (en) | 1975-01-29 |
| CH586286A5 (en) | 1977-03-31 |
| DE2310815B2 (en) | 1976-08-26 |
| YU40100B (en) | 1985-08-31 |
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