A centrifugal method for manufacturing the swash billet rolling a seamless steel pipe Bimetal

The invention provides a manufacturing method for the oblique rolling of a bimetallic compound seamless steel pipe by a centrifugal blank, which comprises the following steps: producing a bimetallic compound circular pipe blank on a centrifugal pipe die by adopting a centrifugal casting process and pushing a pipe when the temperature of an inner-layer metal layer is 950 to 1400 DEG C; carrying out heat treatment on the bimetallic compound circular pipe blank according to the purpose of the bimetallic compound circular pipe; carrying out machining or surface oxidation treatment on the pipe blank according to the purpose after rolling; rolling the bimetallic compound circular pipe blank by adopting an oblique rolling machine set; and carrying out the heat treatment on the bimetallic compound circular pipe blank after being rolled. According to the manufacturing method for the oblique rolling of the bimetallic compound seamless steel pipe by the centrifugal blank in the production of an oblique rolling process, which is adopted by the invention, crystal grains are thinned by the centrifugal blank through the deformation of each passage of the oblique rolling machine set, and the integral performance of the seamless steel pipe is enhanced. Meanwhile, the bonding strength between two layers of metal of the bimetallic compound seamless steel pipe with the oblique rolling of the centrifugal blank is ensured by adopting the centrifugal blank and the oblique rolling process, the processing cost is also lowered, and the metal yield is enhanced.