Cemented carbide roll collar

Abstract

The invention discloses a cemented carbide roll collar. The cemented carbide roll collar comprises the following components in percentage by weight: 3-5% of Ni, 3-5% of Co, 0.5-1% of Cr3C2, 1-2.5% of Ta, 1-2.5% of Nb, 0.005-0.015% of La and the balance of WC. The cemented carbide roll collar has the advantages that by adding Ta and Nb, the high-temperature red hardness is improved; by adding La, the overall comprehensive performance is improved, the bending strength is increased by 500MPa / mm<2> and the service life is increased by 30-50%.

Description

technical field [0001] The invention relates to a cemented carbide roller ring. Background technique [0002] The formula of existing cemented carbide roller ring includes WC, Ni, Co, Cr3C2, is applicable to the working condition of temperature above 1000 ℃, and the service life is short. Contents of the invention [0003] The object of the present invention is to provide a cemented carbide roller ring, which can effectively solve the problem of short service life of the cemented carbide roller ring. [0004] In order to solve the above-mentioned technical problems, the present invention is achieved through the following technical solutions: a cemented carbide roller ring, comprising: 3-5% Ni, 3-5% Co, 0.5-1% Cr3C2, 1-2.5% of Ta, 1-2.5% of Nb, 0.005-0.015% of La, and the balance is WC. [0005] Preferably, it includes by weight percentage: 3% Ni, 5% Co, 0.5% Cr3C2, 2.5% Ta, 2.5% Nb, 0.005% La, and the rest is WC; [0006] Optionally, it includes by weight percentage: 5%...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a cemented carbide roller ring, which can effectively solve the problem of short service life of the cemented carbide roller ring