Preparation method of cermet wear-resistant material based on carbide-forming elements promoting carbon migration
A technology of cermets and wear-resistant materials, applied in the field of wear-resistant materials, can solve problems such as low efficiency, long carburizing time, and grain growth, and achieve the effects of simple process, improved carburizing efficiency, and small particle size
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example 1
[0020] Example 1: Prepare cermet wear-resistant material according to the following steps:
[0021] (1) Preparation of cermet blanks containing carbide-forming elements: Weigh various raw material powder ingredients, Ni accounts for 5wt%, Co accounts for 8wt%, Mo accounts for 2wt%, W accounts for 6wt%, TiC 0.7 N 0.3 As the balance; mix the weighed powder and after 42 hours of ball milling, filter with a 400-mesh screen, dry at 85°C, mix 70% of the weight of the cermet powder into a butadiene rubber molding agent, and press under a pressure of 300MPa to obtain a metal Ceramic green body; the cermet green body is heated to 580°C in a vacuum sintering furnace, the heating rate is 2°C / min, the vacuum degree is 6Pa, and it is kept for 1 hour to form a cermet green body containing carbide-forming elements;
[0022] (2) Preparation of hydrogen-containing carburizing medium: first weigh TiH with a particle size of 1.1 μm 2 The powder is added to absolute ethanol to form TiH 2 Accou...
example 2
[0025] Example 2: Prepare cermet wear-resistant material according to the following steps:
[0026] (1) Preparation of cermet body containing carbide-forming elements: Weigh various raw material powder ingredients, Ni accounts for 15wt%, Co accounts for 10wt%, Mo accounts for 3wt%, W accounts for 2wt%, TiC 0.7 N 0.3 as the balance; mix the weighed powder and after 72 hours of ball milling, filter through a 400-mesh screen, dry at 90°C, mix 110% of the weight of the cermet powder into a butadiene rubber molding agent, and press under a pressure of 400MPa to obtain a metal Ceramic green body; the cermet green body is heated up to 700°C in a vacuum sintering furnace, the heating rate is 5°C / min, the vacuum degree is 8Pa, and it is kept for 2 hours to form a cermet green body containing carbide-forming elements;
[0027] (2) Preparation of hydrogen-containing carburizing medium: first weigh TiH with a particle size of 0.6 μm 2 The powder is added to absolute ethanol to form TiH ...
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