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
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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
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 heater |
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 GB GB960574A patent/GB1458255A/en not_active Expired
- 1974-03-04 YU YU565/74A patent/YU40100B/en unknown
- 1974-03-04 IN IN462/CAL/74A patent/IN141733B/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 SE SE7402945A patent/SE410012B/en not_active IP Right Cessation
- 1974-03-05 ZA ZA00741415A patent/ZA741415B/en unknown
- 1974-03-05 BR BR1602/74A patent/BR7401602D0/en unknown
- 1974-03-05 CA CA194,051A patent/CA1036916A/en not_active Expired
- 1974-03-05 FR FR7407504A patent/FR2220595B1/fr not_active Expired
- 1974-03-05 JP JP2566574A patent/JPS547502B2/ja not_active Expired
- 1974-03-06 IT IT67570/74A patent/IT1009199B/en active
Also Published As
Publication number | Publication date |
---|---|
DD110058A5 (en) | 1974-12-05 |
JPS49119839A (en) | 1974-11-15 |
DE2310815A1 (en) | 1974-09-12 |
SE410012B (en) | 1979-09-17 |
AT340981B (en) | 1978-01-10 |
ES423504A1 (en) | 1976-05-16 |
IN141733B (en) | 1977-04-09 |
CH586286A5 (en) | 1977-03-31 |
FR2220595B1 (en) | 1976-12-10 |
ATA173174A (en) | 1977-05-15 |
CA1036916A (en) | 1978-08-22 |
FR2220595A1 (en) | 1974-10-04 |
YU40100B (en) | 1985-08-31 |
GB1458255A (en) | 1976-12-15 |
BR7401602D0 (en) | 1974-10-29 |
ZA741415B (en) | 1975-01-29 |
YU56574A (en) | 1982-02-28 |
JPS547502B2 (en) | 1979-04-07 |
DE2310815B2 (en) | 1976-08-26 |
IT1009199B (en) | 1976-12-10 |
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