A kind of cu-cr-ag alloy crystallizer copper plate and its preparation process

Abstract

The invention discloses a Cu-Cr-Ag alloy crystallizer copper plate comprising the following components in percentage by mass: 0.1-0.3% of metal chromium, 0.03-0.05% of a deoxidizing agent namely metal magnesium, 0.08-0.2% of metal silver and 99.56-99.79% of metal copper. The invention also discloses a preparation process of the Cu-Cr-Ag alloy crystallizer copper plate. The Cu-Cr-Ag alloy crystallizer copper plate disclosed by the invention has very good heat-conducting property and relatively high tensile strength, and simultaneously has very high softening temperature, high thermal cracking resistance and good creep resistance, so that the service life of the crystallizer copper plate is prolonged, the pulling rate of a plate blank casting machine is improved, the production efficiency of plate blanks is greatly improved, and thus the Cu-Cr-Ag alloy crystallizer copper plate is a novel high-thermal-cracking-resistance crystallizer copper plate which is suitable for multi-steel-type continuous casting operation for high-pulling-rate high-efficiency production of ultra-low-carbon steel, silicon steel, SPHC and the like.

Description

technical field [0001] The invention belongs to the technical field of continuous casting equipment components, and in particular relates to a Cu-Cr-Ag alloy crystallizer copper plate and a preparation process thereof. Background technique [0002] As domestic iron and steel enterprises propose energy saving, emission reduction, transformation and upgrading, and product quality improvement, various domestic iron and steel enterprises have increased equipment production efficiency one after another. From the perspective of continuous casting equipment, it is to improve the utilization efficiency of continuous casting machines and increase the casting speed of casting machines , the casting speed of the slab caster is increased from the original 0.5 to 1.5m / min to 1.2 to 2.8m / min, and the casting speed of the thin plate continuous casting is increased to 4.7~6m / min; The utilization efficiency of the machine and the casting speed of the casting machine are improved, thereby red...

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Problems solved by technology

[0002] As domestic iron and steel enterprises propose energy saving, emission reduction, transformation and upgrading, and product quality improvement, various domestic iron and steel enterprises have increased equipment production efficiency one after another. From the perspective of continuous casting equipment, it is to improve the utilization efficiency of continuous casting machines and increase the casting speed of casting machines , the casting speed of the slab caster is increased from the original 0.5 to 1.5m / min to 1.2 to 2.8m / min, and the casting speed of the thin plate continuous casting is increased to 4.7~6m / min; The utilization efficiency of the machine and the casting speed of the casting machine are improved, thereby reducing the production cost. This requires a higher material requirement for the mold copper plate, which is the core component of the continuous casting mold. The core is to greatly increase the use of the mold copper plate at a high casting speed. Life and high temperature creep resistance. The existing mold copper plates mainly include Ag-Cu material mold copper plates and Cu-Cr-Zr mold copper plates; Ag-Cu copper plates have low recrystallization temperature and low strength. The improvement of its performance has already shown its lack of performance. High-temperature creep of the copper plate and severe thermal cracking lead to a decrease in life; although the strength of the Cu-Cr-Zr copper plate is high, its thermal conductivity is poor and it is difficult to meet the requirements of the high-speed crystallizer. need

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