Method for preparing C70250 nickel-silicon bronze strip by using horizontal continuous casting blank

The invention belongs to the field of non-ferrous metal processing, particularly discloses a method for preparing a C70250 nickel-silicon bronze strip by using a horizontal continuous casting blank, and provides the following scheme: the C70250 nickel-silicon bronze strip comprises the following raw materials in parts by weight: 95 to 105 parts of copper, 0.3 to 0.9 parts of chromium carbide, 3 to 4 parts of fluorine, 0.10 to 0.15 part of nickel, 0.01 to 0.15 part of silicon, 0.4 to 0.9 part of calcium, 2 to 3 parts of boron, 0.2 to 0.4 parts of chromium, 0.01 to 0.10 parts of zirconium and 0.01 to 1.00 part of rare earth; and hot working is conducted, specifically, a horizontal slab continuous casting machine is prepared, hot working is conducted on the cast ingot at the temperature of 700-980 DEG C, the cast ingot is placed in the horizontal slab continuous casting machine, and the reduction of the cross section area of hot working of the cast ingot is controlled to be not lower than 75%. The minimization of the yield strength anisotropy of the present invention results in an extended and stable service life of a workpiece processed from the C70250 nickel silicon bronze strip.