METHOD OF PRODUCING COLD-DEFORMED COUPLING PIPES OF 114,3x6,88 mm SIZE FROM CORROSION-RESISTANT ALLOY OF "ХН30МДБ" GRADE Russian patent published in 2017 - IPC B21B21/00

Abstract RU 2615925 C1

FIELD: metallurgy.

SUBSTANCE: method comprises production of centrifugal cast hollow ingot-billets, their boring into hollow billets, heating, rolling at Pilger mill on taper mandrels to re-rolled hot-rolled pipes which are bored and turned to re-rolled stock tubes and rolling at CRM mill to pipes, cutting of pipes into two pipes of equal length and their rolling at CRM mill to commercial pipes.

EFFECT: reduction in the cost and improving the quality of the pipes is provided by the regulation of billets processing modes at all stages of production.

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RU 2 615 925 C1

Authors

Safyanov Anatolij Vasilevich

Dates

2017-04-11—Published

2016-03-22—Filed