SU985145A1 - Method of thermochemical treatment of steel articles - Google Patents
Method of thermochemical treatment of steel articles Download PDFInfo
- 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
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- thermochemical treatment
- steel articles
- chemical
- parts
- steel
- Prior art date
Links
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 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)
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 |
Family
ID=20969500
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
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) |
-
1981
- 1981-07-13 SU SU813318414A patent/SU985145A1/en active
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US5141567A (en) | Method of nitriding steel | |
CA1133808A (en) | Process for increasing the corrosion resistance of nitrided component parts of iron material | |
GB1522447A (en) | Steel article having a nitrided and partly oxidized surface and method for producing same | |
BR0112310A (en) | Carbide coated steel articles and manufacturing method | |
SU985145A1 (en) | Method of thermochemical treatment of steel articles | |
EP0479409B1 (en) | Austenitic stainless steel screw and a method for manufacturing the same | |
McCarty et al. | Inhibition of nitrification in soil by gaseous hydrocarbons | |
FR2777911B1 (en) | LOW PRESSURE CARBONITRURATION OF METAL ALLOY PARTS | |
RU2367716C1 (en) | Processing method of steel products in gaseous medium | |
US6482272B2 (en) | Method of preventing nitridation or carburization of metals | |
KR910016956A (en) | Manufacturing method of alloyed hot dip galvanized steel sheet | |
ES2097012T3 (en) | PROCEDURE TO IMPROVE THE RESISTANCE TO WEAR AND CORROSION OF IRON METAL PARTS. | |
SU395520A1 (en) | ||
SU899710A1 (en) | Process for sulphocyaniding steel and cast iron products | |
US2215950A (en) | Chemical process | |
KR950024794A (en) | Treatment agent for exhaust gas and treatment method using same | |
JP2733608B2 (en) | Bearing steel and method of manufacturing the same | |
JPS5579805A (en) | Production of bushing for oil-less chain | |
SU1103912A1 (en) | Method of rolling lithium | |
SU1507860A1 (en) | Carburizer for gaseous nitrocarburization of steel articles | |
JPH06136507A (en) | Surface treatment of ti-al intermetallic compound | |
SU954515A1 (en) | Carburizer for high-temperature cyanidation | |
Krauss | Effects of High-Carbon Specimen Corners on Microstructue and Fatigue of Partial Pressure Carburized Steels | |
Takacs | Nitemper of Gear Rims and Gears | |
Otte et al. | Corrosion characteristics of mild steel in aqueous solutions of fatty acids |