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

A technology of high chromium cast iron and wear-resistant parts, which is applied in the field of TiN powder high-chromium cast iron to manufacture wear-resistant parts, including VN. It can solve the problems of peeling off the surface of castings and wear failure of castings, so as to improve wear resistance, Improvement of wear resistance and growth suppression effect

Active Publication Date: 2011-10-12
SHANDONG KAITAI SHOT BLASTING MACHINERY
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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

Method used

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Embodiment Construction

[0023] The present invention will be specifically described below. The invention discloses a VN, TiN powder high chromium cast iron, in which there are powders, the powders are VN with a purity of 99.5% and TiN with a purity of 99.3%, and the powders account for the weight of the high chromium cast iron The percentages are 2-4% VN and 2-4% TiN, the high chromium cast iron also includes 3.1-3.9%C, 18-22%Cr, 0.5-1.0%Si, 0.6-1.6%Mo, 0.6-1.2% Mn, 0.1-0.4%Ni, 0.04-0.09%V, 0.011-0.031%S, 0.018-0.030%P, and the balance is the base material of iron. The average particle size of the powder used is 20-40 nanometers.

[0024] The preparation method of the high chromium cast iron material is: the preparation method comprises the following steps:

[0025] 1) Melting the base material with an intermediate frequency induction furnace at a melting temperature of 1440-1550° C. to obtain the base metal liquid. The electric furnace is a 250 kg intermediate frequency induction furnace;

[0026...

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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 nucleation core 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...

Claims

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Application Information

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IPC IPC(8): C22C37/10C22C33/08B24C5/06
Inventor 李计良王守仁
Owner SHANDONG KAITAI SHOT BLASTING MACHINERY
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