Alloy slitting wheel for high-finish rolling mill and its regeneration manufacturing process

Abstract

The invention discloses an alloy splitting wheel of a high-finish rolling mill and a regeneration manufacturing process thereof. The composition of each component of the splitting wheel of the rolling mill according to the mass percentage is: C2.15%~2.40%, Al≤0.40%, Mn0.3%~0.5%, S≤0.030%, P≤0.030%, Cr8.00 %~10.50%, Ti1.5%~1.8%, RE0.05%~0.12%, V0.15~0.30%, Mo0.40%~0.60%, Ni residual content≤0.25%, Cu residual content≤0.30 %, the rest is Fe. In the present invention, the splitting wheel is subjected to repeated surface nitriding treatment, controlled by gradient temperature, and combined with alloy elements in steel to form various alloy nitrides, especially aluminum nitride and chromium nitride. These nitrides have high hardness, thermal stability and high dispersion, so that the steel parts after nitriding can obtain high surface hardness, wear resistance, fatigue strength, seizure resistance, resistance to atmosphere and superheated steam Corrosion resistance, resistance to temper softening, and reduced notch sensitivity.

Description

technical field [0001] The invention belongs to the technical field of metal materials and surface treatment, and in particular relates to a high-precision rolling mill alloy splitting wheel and its regeneration manufacturing process. Background technique [0002] Iron and steel materials have high strength and hardness, as well as good plasticity and processability, so it is the most widely used structural material in the world today. However, no matter whether steel materials are used or placed in the atmospheric environment for a long time, they will gradually undergo chemical or electrochemical reactions with the surrounding medium, causing surface corrosion. Mild corrosion can cause the surface to lose its metallic luster and reduce precision. In severe cases, rust pits will appear on the surface, which will deteriorate or even break the mechanical properties of steel products and affect their service life. According to reports, in industrially developed countries, the...

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Problems solved by technology

However, no matter whether steel materials are used or placed in the atmospheric environment for a long time, they will gradually undergo chemical or electrochemical reactions with the surrounding medium, causing surface corrosion

Slight corrosion can make the surface lose its metallic luster and reduce precision. In severe cases, rust pits will appear on the surface, which will deteriorate or even break the mechanical properties of steel products and affect their service life.