SU908948A1 - Process for nitrocementation of steel and cast iron products - Google Patents

Process for nitrocementation of steel and cast iron products Download PDF

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Publication number
SU908948A1
SU908948A1 SU792835045A SU2835045A SU908948A1 SU 908948 A1 SU908948 A1 SU 908948A1 SU 792835045 A SU792835045 A SU 792835045A SU 2835045 A SU2835045 A SU 2835045A SU 908948 A1 SU908948 A1 SU 908948A1
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USSR - Soviet Union
Prior art keywords
steel
nitrocementation
cast iron
iodine
iron products
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SU792835045A
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Russian (ru)
Inventor
Владимир Николаевич Латышев
Владимир Александрович Годлевский
Юрий Константинович Котков
Рудольф Иванович Карабанов
Владимир Федорович Волков
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Ивановский государственный университет
Ивановский Текстильный Институт
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Priority to SU792835045A priority Critical patent/SU908948A1/en
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Publication of SU908948A1 publication Critical patent/SU908948A1/en

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    • CCHEMISTRY; METALLURGY
    • C23COATING 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
    • C23CCOATING 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
    • C23C8/00Solid 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
    • C23C8/06Solid 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
    • C23C8/28Solid 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 one step
    • C23C8/30Carbo-nitriding
    • C23C8/32Carbo-nitriding of ferrous surfaces

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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 НИТЮЦЕМЕНТАЦИИ ИЗДЕЛИЙ ИЗ СТАЛИ(54) METHOD OF NITUCATION OF STEEL PRODUCTS

II

Изобретение относитс  к металлургии, R частности к способам химико-термической обработки в эндотермической атмосфере, а именно нитроцементации с последующей закалкой , и может быть использовано при изтотовлении деталей из стали и серого чугуна, подвергающихс  трению и износу.The invention relates to metallurgy, in particular, to methods of chemical heat treatment in an endothermic atmosphere, namely carbonitriding followed by quenching, and can be used in the manufacture of parts made of steel and gray iron, subjected to friction and wear.

Известен способ химико-термической обработки , служащие дл  создани  на поверхности деталей износостойкого поверхностного сло , заключающийс  в обработке изделий при 840-8 80 С в течение 2-4 ч 1.The known method of chemical heat treatment, which serves to create a wear-resistant surface layer on the surface of the parts, consisting in the treatment of products at 840-8 80 C for 2-4 h 1.

Однако получаемый слой не обладает достаточной сопротивл емостью износу.However, the resulting layer does not have sufficient resistance to wear.

Наиболее б;шзким к предлагаемому  вл етс  способ нитроцементадии при 700-760° С в насыщающей среце, содержащей 40-98% триэтаноламина и 10-60% аммиака 2.The most advanced approach to the present invention is the nitrocementation method at 700–760 ° C in a saturating grape containing 40–98% triethanolamine and 10–60% ammonia 2.

Однако детали, получаемые этим способом, также не обладают достаточной износостойкостью , велика веро тность заииров и схватьгаани  в сочленени х деталей.However, the parts produced by this method also do not have sufficient wear resistance, there is a high likelihood of zaiers and hardening in the joints of the parts.

Цель изобретени  - повышение износостойкости обрабатываемых изделий.The purpose of the invention is to increase the wear resistance of the processed products.

И ЧУГУНАAND CHUGUNA

Указанна  цель достигаетс  тем, что в известном способе обработки при 700-760° С в среде, содержащей одновременно аммиак и тризтаноламин, йод, с возможностью его сублимации, даффузионного проникновени  в поверхностные слои металла, образовани  химических соединений с металлом типа йодидов железа и последующей закалкой, что позвол ет улучшить антифрикционные свойства сло . Йод ввод т в количестве This goal is achieved by the fact that in a known method of treatment at 700-760 ° C in a medium containing both ammonia and triztanolamin, iodine, with the possibility of its sublimation, diffusion penetration into the surface layers of the metal, the formation of chemical compounds with a metal of iron iodide type and subsequent quenching which allows to improve the antifriction properties of the layer. Iodine is administered in the amount of

10 0,02-0,52 г/ч на 1 л объема камеры.10 0.02-0.52 g / h per 1 liter of chamber volume.

Способ осуществл етс  следующим образом.The method is carried out as follows.

Провод т обработку образцов из армкожелеза , стали 45 и серого чугуна СЧ 18--36 Conducts processing samples of armkozheleza, steel 45 and gray cast iron MF 18--36

ts при добавке йода. Образцы помещают в реторту из нержавеющей стали, подвергают действию атмосферы, состо щей из продуктов пиролиза аммиака, триэтаиоламина и йода. Параметры процесса: объем реторты ts with iodine supplementation. The samples are placed in a stainless steel retort, exposed to the atmosphere consisting of ammonia, triethyolamine and iodine pyrolysis products. Process Parameters: Retort Volume

20 3,5 л, температура процесса 700° С, подача аммиака 0,8-1,0 л/мин, триэт ноламина 25 мл/ч, йода 0,52 г/ч, врем  процесса 3 ч, закалка в масле с темг ературы процесса.20 3.5 l, process temperature 700 ° С, supply of ammonia 0.8-1.0 l / min, triet nolamine 25 ml / h, iodine 0.52 g / h, process time 3 h, oil quenching temp. process settings.

3908948439089484

Вли ние количества вводимого йода на ве-: нию качества получаемого сло  и уменьшеличину износа деталей приведено в таблице.нию износостойкоста образца. Кроме того,The effect of the amount of iodine injected on the quality of the resulting layer and the decrease in the amount of wear and tear on the parts is given in the table. The wear resistance of the sample. Besides,

Подача йода в количестве меньшем, чемтенсивиому шлакообразованию в рабочемThe supply of iodine in an amount less than the extensive slag formation in the worker

0,02 г/ч, практически не вли ет на структу j объеме камеры и в ее выпускном патрубке, ру и свойства полученного нитроцементиро-что снижает стабильность процесса.0.02 g / h, practically does not affect the structure j of the chamber volume and in its outlet nozzle, the py and the properties of the nitro-cement obtained, which reduces the stability of the process.

ванного сло . Подача йода в количествеКак видно из табющы, износостоткостьbath The supply of iodine in quantity

большем, чем 0,52 г/ч, приводит к сниже-образцов повышаетс  на 15-29%.more than 0.52 g / h leads to a decrease in the sample increases by 15-29%.

большое количество йода приводит к инa large amount of iodine leads to in

Claims (1)

1. Авторское свидетельство СССР № 487961, кл. С 23 С 9/16, 1972.1. USSR author's certificate No. 487961, cl. C 23 C 9/16, 1972.
SU792835045A 1979-09-13 1979-09-13 Process for nitrocementation of steel and cast iron products SU908948A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU792835045A SU908948A1 (en) 1979-09-13 1979-09-13 Process for nitrocementation of steel and cast iron products

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU792835045A SU908948A1 (en) 1979-09-13 1979-09-13 Process for nitrocementation of steel and cast iron products

Publications (1)

Publication Number Publication Date
SU908948A1 true SU908948A1 (en) 1982-02-28

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