SU985145A1 - Method of thermochemical treatment of steel articles - Google Patents

Method of thermochemical treatment of steel articles Download PDF

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Publication number
SU985145A1
SU985145A1 SU813318414A SU3318414A SU985145A1 SU 985145 A1 SU985145 A1 SU 985145A1 SU 813318414 A SU813318414 A SU 813318414A SU 3318414 A SU3318414 A SU 3318414A SU 985145 A1 SU985145 A1 SU 985145A1
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SU
USSR - Soviet Union
Prior art keywords
thermochemical treatment
steel articles
chemical
parts
steel
Prior art date
Application number
SU813318414A
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Russian (ru)
Inventor
Владимир Николаевич Латышев
Владимир Александрович Годлевский
Юрий Константинович Котков
Владимир Федорович Волков
Original Assignee
Ивановский Государственный Университет Им.Первого В России Ивановознесенского Общегородского Совета Рабочих Депутатов
Ивановский текстильный институт им.М.В.Фрунзе
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Application filed by Ивановский Государственный Университет Им.Первого В России Ивановознесенского Общегородского Совета Рабочих Депутатов, Ивановский текстильный институт им.М.В.Фрунзе filed Critical Ивановский Государственный Университет Им.Первого В России Ивановознесенского Общегородского Совета Рабочих Депутатов
Priority to SU813318414A priority Critical patent/SU985145A1/en
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Publication of SU985145A1 publication Critical patent/SU985145A1/en

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    • 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

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  • 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 ХИМИКО-ТЕРМИЧЕСКОЙ ОБРАБОТКИ СТАЛЬНЫХ ИЗДЕЛИЙ(54) METHOD OF CHEMICAL-THERMAL TREATMENT OF STEEL PRODUCTS

1one

Изобретение относитс  к металлургии, в частности к химико-термической обработке стальных деталей машин в эндотермической газовой атмосфере, содержащей аммиак, продукты пиролиза триэтанопамина , пары или химические соединени  серы.The invention relates to metallurgy, in particular to the chemical-heat treatment of steel machine parts in an endothermic gas atmosphere containing ammonia, trietanopamine pyrolysis products, vapors or chemical sulfur compounds.

Известен способ сульфоцианировани  в жидкостных ваннах, согласно которому ведут обработку деталей в расплавах солей, содержащих углерод, азот, серу, The known method of sulfosianization in liquid baths, according to which parts are processed in molten salts containing carbon, nitrogen, sulfur,

6ОО-8ОО С в течение нескольких часов. В результате поверхностный слой насьш1аетс  серой, азотом и углеродом, детали приофетают высокую задиростойкость и хорошую хфирабатываемость Л.,56OO-8OO C for several hours. As a result, the surface layer is saturated with sulfur, nitrogen and carbon, the parts produce high resistance to corrosion and good working ability L., 5

Однако этот способ жидкостного суль- фоцианировани  не получил широкого рас- гфостранени  в промышленности из-за повышенной опасности дл  обслуживающего персонала и дсроговизны.20However, this method of liquid sulfocyanation did not receive a wide spread in the industry due to the increased danger to the operating personnel and the cost of service.

Наиболее близким к предлагаемому по технической сущности и достигаемому эффекту  вл етс  способ газового сульфоазотировани , согласно которому обработкуThe closest to the proposed technical essence and the achieved effect is a method of gas sulfo-nitrogenization, according to which the treatment

деталей ведут прк 420-7ОО°С к давлении 10 - 750 торр в атмосфере, содержащей соединени  азота, серы и углерода 2.parts are prk 420-7OO ° C to a pressure of 10-750 Torr in an atmosphere containing compounds of nitrogen, sulfur and carbon 2.

В результате обработки на поверхности образуетс  сульфид1фованна  зона пониженной твердости, под которой располагаютс  слои высокой твердости, насыщенные углеродом и азотом.As a result of processing, a sulfide solid zone of reduced hardness is formed on the surface, under which there are layers of high hardness saturated with carbon and nitrogen.

Детали, обработанные известным способом , обладают хорошей задиростойкостью и прирабатываемостью, но недостаточно высокой износостойкостью в услови х повышенных контактных нагрузок, наифим при работе зубчатых передач, из-за низкой- твердости структуры, лежащей под ущзочненным слоем.Parts processed in a known manner have good durability and workability, but not sufficiently high wear resistance under conditions of increased contact loads, like when working gears, due to the low hardness of the structure lying under the pinched layer.

Цель изобретени  - повышение износостойкости обрабатываемых изделий и интенсификаци  процесса насыщени .The purpose of the invention is to increase the wear resistance of the processed products and intensify the saturation process.

Поставленна  цель достигаетс  тем, что непосредственно перед сульфоцианированием провод т процесс карбонитрировани  при 8ОО-880 С. Процесс высокотемпературного карбонитрировани  ведут 1-4 ч, после чегоThe goal is achieved by the process of carbonitriding at 8OO-880 C immediately before sulfocyaniation. The process of high-temperature carbonitriding is carried out for 1-4 hours, after which

Claims (1)

Формула изобретения Способ химико—термической обработки стальных изделий, включающий газовое сульфопианирование при 680-720°С с последующей закалкой, отличаюш и й с я тем, что, с целью повышения износостойкости обрабатываемых изделий и интенсификации процесса насыщения, перед сульфоцианированием проводят карбонит— рирование при 800-880 С в течение 1-4 ч. 'SUMMARY OF THE INVENTION A method for the chemical-thermal treatment of steel products, including gas sulfonation at 680-720 ° C followed by quenching, is distinguished by the fact that, in order to increase the wear resistance of the processed products and to intensify the saturation process, carbonitriding is carried out before sulfocyanation at 800-880 C for 1-4 hours. '
SU813318414A 1981-07-13 1981-07-13 Method of thermochemical treatment of steel articles SU985145A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU813318414A SU985145A1 (en) 1981-07-13 1981-07-13 Method of thermochemical treatment of steel articles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU813318414A SU985145A1 (en) 1981-07-13 1981-07-13 Method of thermochemical treatment of steel articles

Publications (1)

Publication Number Publication Date
SU985145A1 true SU985145A1 (en) 1982-12-30

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SU813318414A SU985145A1 (en) 1981-07-13 1981-07-13 Method of thermochemical treatment of steel articles

Country Status (1)

Country Link
SU (1) SU985145A1 (en)

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