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渣浆泵知识 Your current location: Home > News > Knowledge of slurry pumps Knowledge of slurry pumps

Alloy elements in high chromium cast iron of slurry pump material-C, Cr

Author: Fu-pump Time: 2019-09-29 Hits:

Alloy elements in high chromium cast iron of slurry pump material-C, Cr:

For high chromium cast iron materials of slurry pumps , carbon is the main element for improving wear resistance, chromium is the main carbide forming element, and some chromium is dissolved in the matrix, which can strengthen the matrix, improve hardenability, and improve the matrix. Electrode potential, thereby reducing the electrode potential difference between the carbide and the substrate, and reducing electrochemical corrosion. With the increase of carbon content, the amount of carbides increases, and the wear resistance increases, but too high content will coarsen the carbides, increase the degree of cracking of the matrix, reduce the impact toughness, and increase the degree of carbide phase boundary corrosion . Document E33 describes that high Cr content (greater than 25) is only good for improving acid corrosion resistance and high temperature oxidation resistance, but has little effect on alkali corrosion resistance. It is introduced that 3OCr-3Mn-2. Excellent resistance to corrosion and abrasion in acidic, neutral or alkaline media.

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