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2 453 614

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IPC

C21D6/02(2006-01-01)

C21D9/30(2006-01-01)

(21) (22)

Application

2011126868/02, 2011-06-29

(24)

Start date

2011-06-29

(22)

Actual filing date

2011-06-29

(45)

Published

2012-06-20

(72)

Inventor

Vasil'Ev Viktor AleksandrovichMalov Viktor Sergeevich

(73)

Holder

Gosudarstvennoe Obrazovatel'Noe Uchrezhdenie Vysshego Professional'Nogo Obrazovanija Gosudarstvennyj Tekhnicheskij Universitet Im. R.E. Alekseeva"

PROCEDURE FOR THERMAL TREATMENT OF CRANK SHAFTS DIES OUT OF MARTENSITE-FERRITE STEEL OF CLASS 14X17H2 Russian patent published in 2012 - IPC C21D6/02 C21D9/30

Abstract RU 2453614 C1

FIELD: metallurgy.

SUBSTANCE: they are subjected to hardening by heating to 970-1020 °C and cooling in oil, then to a double tempering at 620-670 C, with the first tempering carried out for 4.5-5 hours, and the second one for 3.5-4.5 hours, and cooled after each tempering in water or oil.

EFFECT: increased impact strength across the deformation fibres of shafts made of steel 14H17H2.

1 ex, 4 tbl

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RU 2 453 614 C1

Authors

Vasil'Ev Viktor Aleksandrovich

Malov Viktor Sergeevich

Dates

2012-06-20—Published

2011-06-29—Filed