| 摘要 |
PURPOSE:To produce rolled clad steel having excellent joining strength with low rolling reduction in the stage of producing a clad material of copper or a copper alloy and steel by controlling the surface temp. of the steel base material and the central temp. of the cladding metal of copper at specific temps. in rolling these materials. CONSTITUTION:In the stage of producing rolled clad steel of copper or a copper alloy and steel, copper or copper alloy plates 4 as 2 sheets of cladding metals are brought into contact with the inner sides of steel plates 2 which are base materials via release agents. Packing materials 8 are packed in the end parts to form these into sandwich construction. Or a dummy material 10, a release material 6, a cladding metal 4 and a base material 2 are formed in a laminar state to a composite slab, and such slag is rolled to produce clad steel. In this time, the materials are rolled by controlling temps. in such a way that the surface temp. of the dummy material 10 is kept lower by >=100 deg.C than the temp. of the metal 4 and that the central temp. of the metal 4 has a temp. difference within 300 deg.C from the m.p. thereof. The copper clad steel having excellent joining strength is produced with low rolling force. |
