Process for preparing CuZr alloy for crystallizer copper plate parent metal of high-pulling-speed continuous casting machine

Abstract

The invention discloses CuZr alloy for crystallizer copper plate parent metal of a high-pulling-speed continuous casting machine. The CuZr alloy comprises the following components in percentage by mass: 0.12 to 0.18 percent of metal zirconium, 0.03 to 0.05 percent of metal magnesium serving as a deoxidant and 99.77 to 99.85 percent of metal copper. According to a CuZr alloy plate obtained by the process, the brinell hardness in the heat treatment state is 90 to 110 HB, the tensile strength is 280 to 310 MPa, the elongation is 18 to 25 percent, and the electric conductivity is 53 to 54. The crystallizer copper plate parent metal of the high-pulling speed continuous casting machine manufactured by the CuZr alloy plate is high in thermal conductivity, abrasive resistance and strength, so that the service life of a crystallizer which takes the CuZr alloy as the copper plate parent metal is prolonged, bleed-out accidents are avoided, the time of using the crystallizer is improved, the repair time and non-normal offline frequency of the crystallizer are reduced greatly, the operation rate of the continuous casting machine and the quality and yield of continuous casting slabs are improved greatly, and the normal and stable running of production is ensured.

Description

technical field [0001] The invention relates to the technical field of continuous casting equipment components, in particular to a preparation process of CuZr alloy, a copper plate base material of a crystallizer of a high-speed continuous casting machine. Background technique [0002] As domestic iron and steel enterprises are making more and more efforts to save energy, reduce emissions and eliminate backward production capacity, domestic iron and steel enterprises have increased equipment production efficiency. Speed, the casting speed of the slab caster is increased from 0.5 to 1.5m / min to 1.2 to 2.8m / min, which has higher requirements on the material of the mold copper plate, the core component of the continuous casting mold. The base material is mostly AgCu material. Due to its low recrystallization temperature, low strength and poor wear resistance, with the increase of casting speed, it can no longer meet the production needs of enterprises. Although there are also n...

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Problems solved by technology

[0002] As domestic iron and steel enterprises are making more and more efforts to save energy, reduce emissions and eliminate backward production capacity, domestic iron and steel enterprises have increased equipment production efficiency. Speed, the casting speed of the slab caster is increased from 0.5 to 1.5m/min to 1.2 to 2.8m/min, which has higher requirements on the material of the mold copper plate, the core component of the continuous casting mold. The base material is mostly AgCu material. Due to its low recrystallization temperature, low