SU624938A1 - Steel article treating method - Google Patents

Steel article treating method

Info

Publication number
SU624938A1
SU624938A1 SU762407570A SU2407570A SU624938A1 SU 624938 A1 SU624938 A1 SU 624938A1 SU 762407570 A SU762407570 A SU 762407570A SU 2407570 A SU2407570 A SU 2407570A SU 624938 A1 SU624938 A1 SU 624938A1
Authority
SU
USSR - Soviet Union
Prior art keywords
treating method
steel article
article treating
oxidation
hours
Prior art date
Application number
SU762407570A
Other languages
Russian (ru)
Inventor
Вениамин Давыдович Кальнер
Валерий Анатольевич Ковригин
Борис Семенович Старокожев
Станислав Августович Юрасов
Анатолий Григорьевич Божков
Original Assignee
Московский Трижды Ордена Ленина, Ордена Октябрьской Революции И Ордена Трудового Красного Знамени Автомобильный Завод Имени И.А. Лихачева
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 Московский Трижды Ордена Ленина, Ордена Октябрьской Революции И Ордена Трудового Красного Знамени Автомобильный Завод Имени И.А. Лихачева filed Critical Московский Трижды Ордена Ленина, Ордена Октябрьской Революции И Ордена Трудового Красного Знамени Автомобильный Завод Имени И.А. Лихачева
Priority to SU762407570A priority Critical patent/SU624938A1/en
Application granted granted Critical
Publication of SU624938A1 publication Critical patent/SU624938A1/en

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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
    • C23C8/06—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 gases
    • C23C8/34—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 gases more than one element being applied in more than one step

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)

Description

(54) СПОСОБ ОБРАБОТКИ СТАЛЬНЫХ ИЗДЕЛИЙ(54) METHOD FOR PROCESSING STEEL PRODUCTS

концентраиви углерода снижаютс  до значени , соответствующего потенциалу печной атмосферы (0,8-0,9%). Следующий через 1,5 час щрсл окислени  вновь активизирует поверхность.Carbon concentration is reduced to a value corresponding to the potential of the furnace atmosphere (0.8-0.9%). The following oxidation after 1.5 hours re-activates the surface.

Пример. Предварительно отожженные образцы иа стали 25Х1Т насырают aaoTOfcf в атмосфере эндогаза с добавкой аммиака {1об.%) при 740-80СЯС в течение 9,5 час, а затем при ЭЗСРс попеременно провод т три цикла окислени  в течение 10 мин и два цикла цементации в течение 1,5 час, после ааверщени  последнего цикла окислени  образцы охлаждают до температуры 85ОВТО С и в течение 1,5 час подвергают нитроцемен -ации в среде эндогааа, с добавками метана и аммиака с последующей закалкой в масло. Параллельно цровод т обработку образцов-свидетелей по известному режиму, исключив циклы окислени .Example. Pre-annealed 25X1T steel samples will saturate aaoTOfcf in an endogas atmosphere with the addition of ammonia (1% vol.) At 740-80СЯС for 9.5 hours, and then, at EZSRs, three cycles of oxidation are alternately carried out for 10 minutes and two cementation cycles are carried out 1.5 hours after the final oxidation cycle has been completed, the samples are cooled to a temperature of 85-150 ° C and subjected to nitrocementation for 1.5 hours in an endogram medium, with the addition of methane and ammonia, followed by quenching in oil. In parallel, the processing of witness specimens according to a known mode, eliminating oxidation cycles.

Результаты обработки приведены вThe processing results are given in

таблице.the table.

Из таблицы видно, что глубина сло  насыщени  при обработке по предложенному способу на 40% выше, чем в известном . Таким образом, введение промежуточных циклов окислени  перед цементацией позволит сократить длительность процесса в 1,5 раза дл  получени  заданн го комплекса свойств ( кгс/мм наг 2бО кгс/мм 180 кгс/мм ф.ррмула изо.бретени Способ обработки стальных изделий, включающий азотирование в интервале температур АСJ- А,. цементацию при 920-iB5O С, нитроцементацйю при 8SO87 .О°С и закалку в масло, о Т Л в Ч а Ющ и и с   тем, что, с целью сокращени  длительности обработки, цемента1шю периодически через 1-1,5 час чередуют с окислением ь течение 10-15 мин при 920-950°С. Источники информации, прин тые во внимание при экспертизе; 1,Химико-термическа  обработав металлов и снпавов. Минск, Наука и техника , 1974, с. 93-94. 2.Авторское свидетельство СССР № 476340, кл. С 23 С 11/14, 1975.From the table it can be seen that the depth of the saturation layer during processing by the proposed method is 40% higher than the known. Thus, the introduction of intermediate oxidation cycles before cementation will reduce the process time by a factor of 1.5 to obtain a given set of properties (kgf / mm pf 2bO kgf / mm 180 kgf / mm formula of absorption. Method for treating steel products, including nitriding in the temperature range ACJ-A,. cementation at 920-iB5O С, nitro-cementing at 8SO87. О ° С and quenching in oil, о T L in H a and Yusch and so that, in order to reduce the processing time, cement 1 periodically through 1-1.5 hours alternate with oxidation for 10-15 minutes at 920-950 ° C. nicknames of information taken into account in the examination; 1, Chemical-thermal processing of metals and snpavs. Minsk, Science and Technology, 1974, pp. 93-94. 2. USSR Author's Certificate No. 476340, C 23 C 11/14 1975

SU762407570A 1976-09-30 1976-09-30 Steel article treating method SU624938A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU762407570A SU624938A1 (en) 1976-09-30 1976-09-30 Steel article treating method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU762407570A SU624938A1 (en) 1976-09-30 1976-09-30 Steel article treating method

Publications (1)

Publication Number Publication Date
SU624938A1 true SU624938A1 (en) 1978-08-09

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
SU762407570A SU624938A1 (en) 1976-09-30 1976-09-30 Steel article treating method

Country Status (1)

Country Link
SU (1) SU624938A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4702779A (en) * 1985-10-08 1987-10-27 L'air Liquide Heat process for producing corrosion resistant steel articles

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4702779A (en) * 1985-10-08 1987-10-27 L'air Liquide Heat process for producing corrosion resistant steel articles

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