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RU96120693A - METHOD FOR RESTORING PISTON FINGERS OF AUTOTRACTOR DIESELS FROM CEMENTED STEEL BRANDS - Google Patents

METHOD FOR RESTORING PISTON FINGERS OF AUTOTRACTOR DIESELS FROM CEMENTED STEEL BRANDS

Info

Publication number
RU96120693A
RU96120693A RU96120693/02A RU96120693A RU96120693A RU 96120693 A RU96120693 A RU 96120693A RU 96120693/02 A RU96120693/02 A RU 96120693/02A RU 96120693 A RU96120693 A RU 96120693A RU 96120693 A RU96120693 A RU 96120693A
Authority
RU
Russia
Prior art keywords
autotractor
diesels
point
cemented steel
piston fingers
Prior art date
Application number
RU96120693/02A
Other languages
Russian (ru)
Other versions
RU2122588C1 (en
Inventor
В.Н. Хромов
В.Н. Бугаев
Original Assignee
Хабаровский государственный технический университет
Filing date
Publication date
Application filed by Хабаровский государственный технический университет filed Critical Хабаровский государственный технический университет
Priority to RU96120693A priority Critical patent/RU2122588C1/en
Priority claimed from RU96120693A external-priority patent/RU2122588C1/en
Application granted granted Critical
Publication of RU2122588C1 publication Critical patent/RU2122588C1/en
Publication of RU96120693A publication Critical patent/RU96120693A/en

Links

Claims (1)

Способ восстановления поршневых пальцев автотракторных дизелей из цементуемых марок стали, включающий нагрев выше точки Ас3 и охлаждение закалочной жидкостью изнутри, отличающийся тем, что после нагрева ведут дополнительно охлаждение на воздухе до температуры ниже точки Аr1 на 50 - 80oС и проводят дополнительную термоциклическую обработку, заключающуюся в многократном нагреве выше точки Ас1 на 20 - 50oС и охлаждении ниже точки Аr1 на 50 - 80oС, и окончательное охлаждение закалочной жидкостью изнутри с температуры Ас1 + (20 - 50)oС.A method for reconstructing the piston fingers of automotive diesel engines from cemented steel grades, including heating above the Ac3 point and cooling with quenching fluid from the inside, characterized in that after heating they are additionally cooled in air to a temperature below the Ar1 point by 50 - 80 o C and additional thermocyclic treatment is carried out, consisting in repeated heating above the Ac1 point by 20 - 50 o С and cooling below the Ar1 point by 50 - 80 o С, and final cooling by quenching liquid from the inside from the temperature Ac1 + (20 - 50) o С.
RU96120693A 1996-10-15 1996-10-15 Method of reconditioning piston pins made of steel cement grades of automotive engines RU2122588C1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RU96120693A RU2122588C1 (en) 1996-10-15 1996-10-15 Method of reconditioning piston pins made of steel cement grades of automotive engines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RU96120693A RU2122588C1 (en) 1996-10-15 1996-10-15 Method of reconditioning piston pins made of steel cement grades of automotive engines

Publications (2)

Publication Number Publication Date
RU2122588C1 RU2122588C1 (en) 1998-11-27
RU96120693A true RU96120693A (en) 1999-01-20

Family

ID=20186656

Family Applications (1)

Application Number Title Priority Date Filing Date
RU96120693A RU2122588C1 (en) 1996-10-15 1996-10-15 Method of reconditioning piston pins made of steel cement grades of automotive engines

Country Status (1)

Country Link
RU (1) RU2122588C1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2258085C1 (en) * 2004-07-01 2005-08-10 Государственное унитарное предприятие "Уральское отделение Всероссийского научно-исследовательского института железнодорожного транспорта Министерства путей сообщения Российской Федерации" Method of restoration of load-bearing parts of car bogie
RU2296169C1 (en) * 2005-06-15 2007-03-27 Открытое акционерное общество холдинговая компания "Коломенский завод" Method for restoring working capacity of crankshaft with use of hf-current quenching
RU2455141C2 (en) * 2010-04-05 2012-07-10 Открытое акционерное общество холдинговая компания "Коломенский завод" Method of reconditioning large-size nitride-hardened crankshaft scored hollow journals by high-frequency current

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU440424A1 (en) * 1971-10-18 1974-08-25 Ленинградский Ордена Ленина Политехнический Институт Им.М.И.Калинина The method of thermocyclic treatment of carbon steels
SU459518A1 (en) * 1971-12-06 1975-02-05 Ленинградский Ордена Ленина Политехнический Институт Им.М.И.Калинина The method of thermocyclic treatment of carbon steels
SU1341223A1 (en) * 1985-02-01 1987-09-30 Институт проблем литья АН УССР Method of restoring internal surfaces of cylindrical steel components

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