SU460307A1 - The method of heat treatment of cast iron - Google Patents

The method of heat treatment of cast iron

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Publication number
SU460307A1
SU460307A1 SU1900332A SU1900332A SU460307A1 SU 460307 A1 SU460307 A1 SU 460307A1 SU 1900332 A SU1900332 A SU 1900332A SU 1900332 A SU1900332 A SU 1900332A SU 460307 A1 SU460307 A1 SU 460307A1
Authority
SU
USSR - Soviet Union
Prior art keywords
cast iron
heat treatment
cooling
air
subjected
Prior art date
Application number
SU1900332A
Other languages
Russian (ru)
Inventor
Тимофей Алексеевич Лебедев
Вениамин Константинович Федюкин
Владимир Петрович Бреусов
Original Assignee
Ленинградский Ордена Ленина Политехнический Институт Им.М.И.Калинина
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.)
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Publication date
Application filed by Ленинградский Ордена Ленина Политехнический Институт Им.М.И.Калинина filed Critical Ленинградский Ордена Ленина Политехнический Институт Им.М.И.Калинина
Priority to SU1900332A priority Critical patent/SU460307A1/en
Application granted granted Critical
Publication of SU460307A1 publication Critical patent/SU460307A1/en

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Description

1one

Известен способ те)р1мичвской обработки белого чугуна, по которому, с целью распада пбрвичиого цементита в структуре металлической основы чугуна, издели  подвергают высокотемпературному графитизирующему отжигу П1рИ температуре 940-950°С в течение 4-10 ч.The known method is the treatment of white cast iron, according to which, for the purpose of decomposition of pbrvichy cementite in the structure of the metallic cast iron base, the product is subjected to high-temperature graphitizing annealing of P1rI temperature 940-950 ° C for 4-10 hours

Дл  ускарвни;  процесса распада пе|рвичного цементита чугуна с ледебуритной металлической основой и структурносвободным углеродом чугун подвергают многократному нагреву со скоростью 30-100°С/ми Н до 980- 1050°С с последующим охлаждением на воздухе до 600-650°С и окончателыное охлаждение производ т на воздухе.To grind; the process of decomposition of primary casting iron casting with a ledeburitic metal base and structural carbon, cast iron is subjected to repeated heating at a speed of 30–100 ° C / m H to 980–1050 ° C, followed by air cooling to 600–650 ° C and final cooling is performed on air.

Издели  из чугуна со структурно-свободным углеродом (г,рафитом) и большим количеством первичного цементита подвергают Многомраиному быстрому нагреву, «апример 5-8 раз, до температур 980-1050°С с последующими охлажде гием на воздухе до температур 650-600°С. При завершающем ци1сле термообработки охлаждение до комнатных температур производ т тоже на воздухе.Products made of cast iron with structurally free carbon (g, rafit) and a large amount of primary cementite are subjected to multi-core fast heating, “for example 5–8 times, to temperatures of 980–1050 ° C, followed by cooling in air to temperatures of 650–600 ° C . In the final cycle of heat treatment, cooling to room temperature is also carried out in air.

Предложенный способ снимает отбел литых чугунных изделий, а первичный цементит распадаетс  во всей толще металла. Длительность термообработни со1 |ращаетс  дл  мелких изделий до 30-40 мин.The proposed method removes the chill from cast iron products, and the primary cementite disintegrates throughout the entire thickness of the metal. The duration of heat treatment co1 | grows for small products up to 30-40 minutes.

ПреДМет изобретени Invention

Способ термической обработки чугуна, включающий «агрев выше точки Асз и охлаждение , отличающийс  тем, что, с целью ускорени  процесса распада первичного цементита чугуна с ледебуритной металлической основой и структу|рно-;свободным углеродом, чугун подвер гают |многа1 ратному -нагреву со скоростью 30-100°С/ми1н до 980-1050°С с последующимThe method of heat treatment of cast iron, including "heating above Asz point and cooling, characterized in that, in order to accelerate the process of decomposition of primary cast iron cement with ledeburitic metal base and structure of free carbon, the cast iron is subjected to multiple heating with speed 30-100 ° С / mi1n to 980-1050 ° С followed by

охлаждением на воздухе до 600-650°С и окончательное охлаждение производ т «а воздухе.air cooling to 600-650 ° C and final cooling are carried out with air.

SU1900332A 1973-03-30 1973-03-30 The method of heat treatment of cast iron SU460307A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU1900332A SU460307A1 (en) 1973-03-30 1973-03-30 The method of heat treatment of cast iron

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU1900332A SU460307A1 (en) 1973-03-30 1973-03-30 The method of heat treatment of cast iron

Publications (1)

Publication Number Publication Date
SU460307A1 true SU460307A1 (en) 1975-02-15

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Family Applications (1)

Application Number Title Priority Date Filing Date
SU1900332A SU460307A1 (en) 1973-03-30 1973-03-30 The method of heat treatment of cast iron

Country Status (1)

Country Link
SU (1) SU460307A1 (en)

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