METHOD FOR THE PRODUCTION OF SEAMLESS HOT-FORMED CORROSION-RESISTANT PIPES FROM AUSTENITIC STEEL Russian patent published in 2023 - IPC B21B19/04 

Abstract RU 2788284 C1

FIELD: pipes.

SUBSTANCE: invention relates to a method for the production of seamless hot-worked corrosion-resistant pipes from austenitic steel. Heating of a continuously cast billet with a drilled axial zone along the entire length of the billet to a plasticity temperature is carried out, the billet is rolled into a sleeve and the sleeve is rolled into a pipe. Sleeve rolling is carried out in a continuous mill with an ovality of calibers of 1.05÷1.18 at a ratio of the width of the caliber to the diameter of the sleeve not exceeding 1.07. The sleeve is rolled in the extraction and sizing mill and the pipes are heat treated.

EFFECT: urface quality of the pipes is improved.

7 cl, 1 tbl

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RU 2 788 284 C1

Authors

Pumpyanskij Dmitrij Aleksandrovich

Chikalov Sergej Gennadevich

Chetverikov Sergej Gennadevich

Trutnev Nikolaj Vladimirovich

Tumashev Sergej Vladimirovich

Krasikov Andrej Vladimirovich

Bunyashin Mikhail Vasilevich

Ulyanov Andrej Georgievich

Myakotina Irina Vasilevna

Chubukov Mikhail Yurevich

Lokhanov Dmitrij Valerievich

Blagoveshchenskij Sergej Ivanovich

Niklyaev Andrej Viktorovich

Pyshmintsev Igor Yurevich

Vydrin Aleksandr Vladimirovich

Chernykh Ivan Nikolaevich

Korsakov Andrej Aleksandrovich

Dates

2023-01-17Published

2022-03-03Filed