SU739130A1 - Method of carburisation process control - Google Patents

Method of carburisation process control Download PDF

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Publication number
SU739130A1
SU739130A1 SU762321469A SU2321469A SU739130A1 SU 739130 A1 SU739130 A1 SU 739130A1 SU 762321469 A SU762321469 A SU 762321469A SU 2321469 A SU2321469 A SU 2321469A SU 739130 A1 SU739130 A1 SU 739130A1
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SU
USSR - Soviet Union
Prior art keywords
changing
carburizer
process control
humidity
regulating
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Application number
SU762321469A
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Russian (ru)
Inventor
Лев Владимирович Белоручев
Владислав Владиславович Дембовский
Владимир Александрович Королев
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Северо-Западный Заочный Политехнический Институт
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Priority to SU762321469A priority Critical patent/SU739130A1/en
Application granted granted Critical
Publication of SU739130A1 publication Critical patent/SU739130A1/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
    • C23C8/08—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 only one element being applied
    • C23C8/20—Carburising
    • C23C8/22—Carburising 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 РЕГУЛИРОВАНИЯ ПРОЦЕССА ЦЕМЕНТАЦИИ54) METHOD OF REGULATING THE CEMENT PROCESS

1one

Изобретение относитс  к способам термической и химико-термической обработки металлов, в частности к процессам газовой цементации, а также защиты от, обезуг.лероживани  при 5 нагреве.The invention relates to methods for the thermal and chemical-thermal treatment of metals, in particular, to processes of gas carburizing, as well as protection against, de-agglomeration during heating.

Известен способ регулировани  процесса цементации, в котором при отклонении химического потенциала углерода печной атмосферы (измеренного с Ю помощью различных устройств) от заданного значени , измен ют подачу в печь карбюризатора 1.There is a known method for regulating the cementation process, in which, when the chemical potential of the carbon in the furnace atmosphere (measured with H using various devices) deviates from a given value, the flow into the furnace of the carburizer 1 is changed.

Недостатком этого способа  вл етс  то, что регулировани  химического 5 потенциала углерода газовой среды может быть только при использовании , .в качестве последней.эндогаза или экзоэндогаза. Попытки использовать известный способ дл  регулировани  20 процесса цементации такими карбюризаторами , как природный газ, метан СН, пропан не дали положительных результатов из-за обильного сажевыделени .25The disadvantage of this method is that the regulation of the chemical 5 potential of carbon in the gaseous medium can only be used as the last endogase or exo-endogas. Attempts to use the known method for regulating the process of cementation by carburizers such as natural gas, methane CH, propane 20 did not give positive results due to abundant soot extraction .25

Известен также способ регулировани  процесса цементации путем разбавлени  печной атмосферы веществами, св зывающими сажу (воздух, вода, углекислый газ, спирт) 2. При этом . ЗОThere is also known a method for controlling the cementation process by diluting the furnace atmosphere with substances that bind soot (air, water, carbon dioxide, alcohol) 2. In this case. ZO

количество вводимого в печь карбюризатора поддерживают посто нным, а необходимое давление углеродного потенциала атмосферы регулируют путем воздействи  на ее влажность.the amount of carburizer introduced into the furnace is kept constant, and the required pressure of the atmospheric carbon potential is controlled by affecting its humidity.

Недостаток этого способа заключаетс  в том, что количество карбюризатора и влаги на практике чисто не соответствуют оптимальным услови м ведени  техно.погических процессов. Подача карбюризатора может быть Завышена , что увеличивает веро тность выделени  сажи и  вл етс  неэкономичным , а избыток влаги, поддерживаемый в этом случае дл  компенсации возможного превышени  потенциала углерода над его заданной величиной, неблагопри -тно вли ет на обрабатывае мый металл, способству  его внутреннему окислению.The disadvantage of this method is that, in practice, the amount of carburizer and moisture purely do not correspond to the optimal conditions for maintaining techno-logical processes. The supply of the carburizer may be Overestimated, which increases the likelihood of soot release and is uneconomical, and the excess moisture maintained in this case to compensate for the possible excess of the carbon potential over its target value adversely affects the metal being processed, contributing to its internal oxidation. .

Целью изобретени   вл етс  повышение эффективности ведени  технологического процесса. Способ разработан применительно к контролируемой атмосфере в виде смбси увлажн емого азотного газа состава N 2% СО + + 2,5% H-jO и небольшого (до 3%) количества метана или пропана как карбюризаторов .The aim of the invention is to increase the efficiency of the technological process. The method was developed in relation to a controlled atmosphere in the form of a smbsy moistened nitrogen gas of composition N 2% CO + + 2.5% H-jO and a small (up to 3%) amount of methane or propane as carburizers.

Claims (1)

Формула изобретенияClaim Способ регулирования процесса цементации, преимущественно для смесиThe method of regulating the cementation process, mainly for the mixture 30 азотного.газа и углеводородного карбюризатора, путем изменения влажности, отл.и чающийся тем, что, с целью повышения эффективности процесса, одновременно с изменением влажности изменяют расход карбюризатора, при этом максимум углеродного потенциала для данного расхода газа устанавливают изменением подачи влаги, а затем заданный углеродный потенциал получают путем изменения расхода ’карбюризатора.30 of nitrogen gas and a hydrocarbon carburizer, by changing the humidity, characterized in that, in order to increase the efficiency of the process, simultaneously changing the humidity, change the flow of the carburizer, while the maximum carbon potential for a given gas flow rate is set by changing the moisture supply, and then A predetermined carbon potential is obtained by changing the flow rate of the carburetor.
SU762321469A 1976-02-02 1976-02-02 Method of carburisation process control SU739130A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU762321469A SU739130A1 (en) 1976-02-02 1976-02-02 Method of carburisation process control

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU762321469A SU739130A1 (en) 1976-02-02 1976-02-02 Method of carburisation process control

Publications (1)

Publication Number Publication Date
SU739130A1 true SU739130A1 (en) 1980-06-05

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Family Applications (1)

Application Number Title Priority Date Filing Date
SU762321469A SU739130A1 (en) 1976-02-02 1976-02-02 Method of carburisation process control

Country Status (1)

Country Link
SU (1) SU739130A1 (en)

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