Wear-resisting cast steel and preparation method thereof

Abstract

The invention relates to wear-resisting cast steel and a preparation method of the wear-resisting cast steel. The wear-resisting cast steel comprises the following components by weight: 0.80 to 1.10% of C, 6.00 to 8.00% of Mn, 1.00 to 1.80% of Si, 2.50 to 3.50% of Cr, 0.60 to 0.80% of Mo, 0.30 to 0.50% of Cu, 1.00 to 3.00% of Ni, 0.15 to 0.25% of Ti, 0.20 to 0.40% of V, 0.030 to 0.040% of RE, 0.020 to 0.030% of Mg, and the balance of Fe and inevitable impurities. The wear-resisting cast steel is high in impact resistance, high in wear resistance and high in corrosion resistance, and can be welded with a common carbon steel groove body.

Description

technical field [0001] The invention belongs to the field of wear-resistant metal materials, in particular to a wear-resistant cast steel and a preparation method thereof. Background technique [0002] Domestic coal washing plants using dense medium separation process use magnetite powder as the heavy medium, which wears out the equipment quickly. In addition, the gangue content in the raw coal to be washed is about 30% or more. During the washing process, the separation And the equipment for transporting gangue has always had the problems of fast wear, short maintenance cycle, and large consumption of accessories and materials. For example, an 8-10mm thick tank made of ordinary carbon steel (Q235, A3) will be ground and leaked after only ten days of use. If it is replaced as a whole, it will cause a large amount of consumption and waste of materials. The measures currently taken There are two types: [0003] 1. Weld a steel plate with the same material as the tank body on...

AI Technical Summary

Problems solved by technology

[0003] 1. Weld a steel plate with the same material as the tank body on the outside or inside of the tank body that has been ground and leaked to repair the leak. However, because the steel plate used in the leak-remediation measures is the same material as the tank body, the wear is still fast, and the tank body will be ground soon. Leakage can only be repaired and welded steel plates repeatedly, resulting in a large consumption of manpower and material resources

[0004] 2. Lining with wear-resistant materials on the inner side of the tank before use, but the currently used wear-resistant lining boards are not effective. Diabase cast stone and wear-resistant ceramic linings are lined with acid-resistant cement or adhesives. Bonding with the tank body, due to the low impact strength of the material, the wear-resistant effect will drop sharply when subjected to severe impact from the material, and the lining board is fragile, easy to fall off and difficult to replace, so it cannot be welded with ordinary carbon steel tank body; The vinyl chloride lining is fastened to the tank by bolts. Although it is not easy to fall off and easy to replace, it has poor wear resistance, is easy to wear, and has a short service life. It cannot be welded with ordinary carbon steel tanks.