Cu-Cr-Ag alloy crystallizer copper plate and preparation process thereof

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...

AI Technical Summary

Problems solved by technology

[0002] With the domestic iron and steel enterprises' proposals for energy saving, emission reduction, transformation and upgrading, and product quality improvement, 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 the continuous casting machine and increase the casting speed of the casting machine. The casting speed of the slab casting machine is increased from 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; From the perspective of continuous casting, it is to improve the utilization efficiency of the continuous casting machine and increase the casting speed of the casting machine, thereby reducing the production cost. This has higher requirements on the material of the mold copper plate, the core component of the continuous casting mold. Its core is to greatly improve the service life and high temperature creep resistance of mold copper plates at high pulling speeds. The existing mold copper plates mainly include Ag-Cu material mold copper plates and Cu-Cr-Zr mold copper plates; Ag- Due to the low recrystallization temperature and low strength of the Cu copper plate, with the increase of the casting speed, its performance has been insufficient, and the high-temperature creep of the copper plate and severe thermal cracking have resulted in a decrease in life; the strength of the Cu-Cr-Zr copper plate, although High, but poor thermal conductivity is also difficult to meet the needs of high-speed crystallizers

Images