VN/TiN-powder-containing high-chromium cast iron and preparation method thereof, and wear-resistant part

Abstract

The invention discloses a VN / TiN-powder-containing high-chromium cast iron and a preparation method thereof, and a wear-resistant part. The technical scheme is as follows: the VN / TiN-powder-containing high-chromium cast iron is characterized in that the purity of the VN powder is 99.5%, and the purity of the TiN powder is 99.3%; the VN powder accounts for 2-4 wt% of the high-chromium cast iron, and the TiN powder accounts for 2-4 wt% of the high-chromium cast iron; and the high-chromium cast iron also comprises 3.1-3.9% of C, 18-22% of Cr, 0.5-1.0% of Si, 0.6-1.6% of Mo, 0.6-1.2% of Mn, 0.1-0.4% of Ni, 0.04-0.09% of V, 0.011-0.031% of S, 0.018-0.030% of P and the balance of iron as base material. The VN / TiN powder can be used as a high-chromium cast iron molten metal base and a nucleationcore for solidifying carbides, thereby enhancing the wear resistance of the castings; the VN / TiN powder is utilized to reinforce the high-chromium cast iron material, so that wear-resistant shot blasting device blades made of the high-impact-resistant frictional-wear-resistant high-chromium cast iron can be formed; and since the VN / TiN powder is added by an in-furnace addition method, the nanoparticles are added to perform a strengthening effect, and argon gas added into the furnace protects the molten metal.

Description

technical field [0001] The invention relates to a cast iron material, in particular to a high-chromium cast iron containing VN and TiN powder, a preparation method of the cast iron and a method for manufacturing wear-resistant parts with the cast iron material. Background technique [0002] In the prior art, high-chromium cast iron has excellent wear resistance. Therefore, as the upper parts of the shot blasting machine that require high wear resistance, they are all made of high-chromium cast iron. However, this kind of high-chromium cast iron has the following disadvantages in use: when it is subjected to friction and wear, especially in the case of impact friction and wear, the casting is prone to peeling off layer by layer, thus causing the casting to wear and fail. Contents of the invention [0003] The purpose of the present invention is to overcome the defects existing in the prior art, to provide a high chromium cast iron, the preparation method of the high chromiu...

AI Technical Summary

Problems solved by technology

However, this kind of high-chromium cast iron has the following disadvantages in use: when it is subjected to friction and wear, especially in the case of impact friction and wear, the surface of the casting is prone to peeling off layer by layer, resulting in the failure of the casting